doc: update 1.12 release with RTD theme

We've replaced the "zephyr-docs" theme with a simpler read-the-docs
thema starting with the 1.13 release.  This PR retrofits the theme
changes back onto this 1.12 release and ignores attempts to use the
zephyr-docs theme controlled by the make DOC_TAGS option.

Signed-off-by: David B. Kinder <david.b.kinder@intel.com>

.checkpatch.conf

@@ -1,7 +1,9 @@
+--mailback
+--no-tree
 --emacs
 --summary-file
 --show-types
---max-line-length=100
+--max-line-length=80
 --min-conf-desc-length=1
 --typedefsfile=scripts/checkpatch/typedefsfile
 
@@ -10,22 +12,10 @@
 --ignore SPLIT_STRING
 --ignore VOLATILE
 --ignore CONFIG_EXPERIMENTAL
---ignore PREFER_KERNEL_TYPES
---ignore PREFER_SECTION
 --ignore AVOID_EXTERNS
 --ignore NETWORKING_BLOCK_COMMENT_STYLE
 --ignore DATE_TIME
 --ignore MINMAX
 --ignore CONST_STRUCT
 --ignore FILE_PATH_CHANGES
---ignore SPDX_LICENSE_TAG
---ignore C99_COMMENT_TOLERANCE
---ignore REPEATED_WORD
---ignore UNDOCUMENTED_DT_STRING
---ignore DT_SPLIT_BINDING_PATCH
---ignore DT_SCHEMA_BINDING_PATCH
---ignore TRAILING_SEMICOLON
---ignore COMPLEX_MACRO
---ignore MULTISTATEMENT_MACRO_USE_DO_WHILE
---ignore ENOSYS
---ignore IS_ENABLED_CONFIG
+--exclude ext

.clang-format

@@ -1,91 +0,0 @@
-# SPDX-License-Identifier: Apache-2.0
-#
-# Note: The list of ForEachMacros can be obtained using:
-#
-#    git grep -h '^#define [^[:space:]]*FOR_EACH[^[:space:]]*(' include/ \
-#    | sed "s,^#define \([^[:space:]]*FOR_EACH[^[:space:]]*\)(.*$,  - '\1'," \
-#    | sort | uniq
-#
-# References:
-#   - https://clang.llvm.org/docs/ClangFormatStyleOptions.html
-
----
-BasedOnStyle: LLVM
-AlignConsecutiveMacros: AcrossComments
-AllowShortBlocksOnASingleLine: Never
-AllowShortCaseLabelsOnASingleLine: false
-AllowShortEnumsOnASingleLine: false
-AllowShortFunctionsOnASingleLine: None
-AllowShortIfStatementsOnASingleLine: false
-AllowShortLoopsOnASingleLine: false
-AttributeMacros:
-  - __aligned
-  - __deprecated
-  - __packed
-  - __printf_like
-  - __syscall
-  - __syscall_always_inline
-  - __subsystem
-BitFieldColonSpacing: After
-BreakBeforeBraces: Linux
-ColumnLimit: 100
-ConstructorInitializerIndentWidth: 8
-ContinuationIndentWidth: 8
-ForEachMacros:
-  - 'FOR_EACH'
-  - 'FOR_EACH_FIXED_ARG'
-  - 'FOR_EACH_IDX'
-  - 'FOR_EACH_IDX_FIXED_ARG'
-  - 'FOR_EACH_NONEMPTY_TERM'
-  - 'RB_FOR_EACH'
-  - 'RB_FOR_EACH_CONTAINER'
-  - 'SYS_DLIST_FOR_EACH_CONTAINER'
-  - 'SYS_DLIST_FOR_EACH_CONTAINER_SAFE'
-  - 'SYS_DLIST_FOR_EACH_NODE'
-  - 'SYS_DLIST_FOR_EACH_NODE_SAFE'
-  - 'SYS_SFLIST_FOR_EACH_CONTAINER'
-  - 'SYS_SFLIST_FOR_EACH_CONTAINER_SAFE'
-  - 'SYS_SFLIST_FOR_EACH_NODE'
-  - 'SYS_SFLIST_FOR_EACH_NODE_SAFE'
-  - 'SYS_SLIST_FOR_EACH_CONTAINER'
-  - 'SYS_SLIST_FOR_EACH_CONTAINER_SAFE'
-  - 'SYS_SLIST_FOR_EACH_NODE'
-  - 'SYS_SLIST_FOR_EACH_NODE_SAFE'
-  - '_WAIT_Q_FOR_EACH'
-  - 'Z_FOR_EACH'
-  - 'Z_FOR_EACH_ENGINE'
-  - 'Z_FOR_EACH_EXEC'
-  - 'Z_FOR_EACH_FIXED_ARG'
-  - 'Z_FOR_EACH_FIXED_ARG_EXEC'
-  - 'Z_FOR_EACH_IDX'
-  - 'Z_FOR_EACH_IDX_EXEC'
-  - 'Z_FOR_EACH_IDX_FIXED_ARG'
-  - 'Z_FOR_EACH_IDX_FIXED_ARG_EXEC'
-  - 'Z_GENLIST_FOR_EACH_CONTAINER'
-  - 'Z_GENLIST_FOR_EACH_CONTAINER_SAFE'
-  - 'Z_GENLIST_FOR_EACH_NODE'
-  - 'Z_GENLIST_FOR_EACH_NODE_SAFE'
-  - 'STRUCT_SECTION_FOREACH'
-  - 'TYPE_SECTION_FOREACH'
-IfMacros:
-  - 'CHECKIF'
-# Disabled for now, see bug https://github.com/zephyrproject-rtos/zephyr/issues/48520
-#IncludeBlocks: Regroup
-IncludeCategories:
-  - Regex: '^".*\.h"$'
-    Priority: 0
-  - Regex: '^<(assert|complex|ctype|errno|fenv|float|inttypes|limits|locale|math|setjmp|signal|stdarg|stdbool|stddef|stdint|stdio|stdlib|string|tgmath|time|wchar|wctype)\.h>$'
-    Priority: 1
-  - Regex: '^\<zephyr/.*\.h\>$'
-    Priority: 2
-  - Regex: '.*'
-    Priority: 3
-IndentCaseLabels: false
-IndentWidth: 8
-InsertBraces: true
-SpaceBeforeParens: ControlStatementsExceptControlMacros
-SortIncludes: Never
-UseTab: ForContinuationAndIndentation
-WhitespaceSensitiveMacros:
-  - STRINGIFY
-  - Z_STRINGIFY

.codecov.yml

@@ -12,10 +12,10 @@ coverage:
     patch: yes
     changes: no
 
-# ignore:
-#   - "tests/**/*"
-#   - "samples/**/*"
-#   - "ext/hal/**/*"
+#ignore:
+#  - "tests/**/*"
+#  - "samples/**/*"
+#  - "ext/hal/**/*"
 
 parsers:
   gcov:

.editorconfig

@@ -1,92 +0,0 @@
-# EditorConfig: https://editorconfig.org/
-
-# top-most EditorConfig file
-root = true
-
-# All (Defaults)
-[*]
-charset = utf-8
-end_of_line = lf
-insert_final_newline = true
-trim_trailing_whitespace = true
-max_line_length = 100
-
-# Assembly
-[*.S]
-indent_style = tab
-indent_size = 8
-
-# C
-[*.{c,h}]
-indent_style = tab
-indent_size = 8
-
-# C++
-[*.{cpp,hpp}]
-indent_style = tab
-indent_size = 8
-
-# Linker Script
-[*.ld]
-indent_style = tab
-indent_size = 8
-
-# Python
-[*.py]
-indent_style = space
-indent_size = 4
-
-# Perl
-[*.pl]
-indent_style = tab
-indent_size = 8
-
-# reStructuredText
-[*.rst]
-indent_style = space
-indent_size = 3
-
-# YAML
-[*.{yml,yaml}]
-indent_style = space
-indent_size = 2
-
-# Shell Script
-[*.sh]
-indent_style = space
-indent_size = 4
-
-# Windows Command Script
-[*.cmd]
-end_of_line = crlf
-indent_style = tab
-indent_size = 8
-
-# Valgrind Suppression File
-[*.supp]
-indent_style = space
-indent_size = 3
-
-# CMake
-[{CMakeLists.txt,*.cmake}]
-indent_style = space
-indent_size = 2
-
-# Makefile
-[Makefile]
-indent_style = tab
-indent_size = 8
-
-# Device tree
-[*.{dts,dtsi,overlay}]
-indent_style = tab
-indent_size = 8
-
-# Git commit messages
-[COMMIT_EDITMSG]
-max_line_length = 75
-
-# Kconfig
-[Kconfig*]
-indent_style = tab
-indent_size = 8

.gitattributes

@@ -3,11 +3,3 @@
 .gitattributes export-ignore
 .gitignore export-ignore
 .mailmap export-ignore
-
-# Tell git to not diff certain files
-*.svg -diff
-
-# Tell linguist that generated test pattern files should not be included in the
-# language statistics.
-*.pat linguist-generated
-*.svg linguist-generated

.github/ISSUE_TEMPLATE/001_bug_report.md

@@ -1,57 +0,0 @@
----
-name: Bug report
-about: Create a report to help us improve Zephyr
-title: ''
-labels: bug
-assignees: ''
-
----
-
-**Notes (delete this)**
-Github Discussions (https://github.com/zephyrproject-rtos/zephyr/discussions)
-are available to first verify that the issue is a genuine Zephyr bug and not a
-consequence of Zephyr services misuse.
-
-This issue list is only for bugs in the main Zephyr code base
-(https://github.com/zephyrproject-rtos/zephyr/). If the bug is for a project
-fork (such as NCS) specific feature, please open an issue in the fork project
-instead.
-
-**Describe the bug**
-A clear and concise description of what the bug is.
-
-Please also mention any information which could help others to understand
-the problem you're facing:
- - What target platform are you using?
- - What have you tried to diagnose or workaround this issue?
- - Is this a regression? If yes, have you been able to "git bisect" it to a
-   specific commit?
- - ...
-
-**To Reproduce**
-Steps to reproduce the behavior:
-1. mkdir build; cd build
-2. cmake -DBOARD=board\_xyz
-3. make
-4. See error
-
-**Expected behavior**
-A clear and concise description of what you expected to happen.
-
-**Impact**
-What impact does this issue have on your progress (e.g., annoyance, showstopper)
-
-**Logs and console output**
-If applicable, add console logs or other types of debug information
-e.g Wireshark capture or Logic analyzer capture (upload in zip archive).
-copy-and-paste text and put a code fence (\`\`\`) before and after, to help
-explain the issue. (if unable to obtain text log, add a screenshot)
-
-**Environment (please complete the following information):**
- - OS: (e.g. Linux, MacOS, Windows)
- - Toolchain (e.g Zephyr SDK, ...)
- - Commit SHA or Version used
-
-**Additional context**
-Add any other context that could be relevant to your issue, such as pin setting,
-target configuration, ...

.github/ISSUE_TEMPLATE/002_enhancement.md

@@ -1,20 +0,0 @@
----
-name: Enhancement
-about: Suggest enhancements to existing features
-title: ''
-labels: Enhancement
-assignees: ''
-
----
-
-**Is your enhancement proposal related to a problem? Please describe.**
-A clear and concise description of what the problem is.
-
-**Describe the solution you'd like**
-A clear and concise description of what you want to happen.
-
-**Describe alternatives you've considered**
-A clear and concise description of any alternative solutions or features you've considered.
-
-**Additional context**
-Add any other context or graphics (drag-and-drop an image) about the feature request here.

.github/ISSUE_TEMPLATE/003_rfc-proposal.md

@@ -1,51 +0,0 @@
----
-name: RFC / Proposal
-about: Submit an RFC / Proposal
-title: ''
-labels: RFC
-assignees: ''
-
----
-
-## Introduction
-
-This section targets end users, TSC members, maintainers and anyone else that might
-need a quick explanation of your proposed change.
-
-### Problem description
-
-Why do we want this change and what problem are we trying to address?
-
-### Proposed change
-
-A brief summary of the proposed change - the 10,000 ft view on what it will
-change once this change is implemented.
-
-## Detailed RFC
-
-In this section of the document the target audience is the dev team. Upon
-reading this section each engineer should have a rather clear picture of what
-needs to be done in order to implement the described feature.
-
-### Proposed change (Detailed)
-
-This section is freeform - you should describe your change in as much detail
-as possible. Please also ensure to include any context or background info here.
-For example, do we have existing components which can be reused or altered.
-
-By reading this section, each team member should be able to know what exactly
-you're planning to change and how.
-
-### Dependencies
-
-Highlight how the change may affect the rest of the project (new components,
-modifications in other areas), or other teams/projects.
-
-### Concerns and Unresolved Questions
-
-List any concerns, unknowns, and generally unresolved questions etc.
-
-## Alternatives
-
-List any alternatives considered, and the reasons for choosing this option
-over them.

.github/ISSUE_TEMPLATE/004_feature_request.md

@@ -1,20 +0,0 @@
----
-name: Feature request
-about: Suggest an idea for this project
-title: ''
-labels: Feature Request
-assignees: ''
-
----
-
-**Is your feature request related to a problem? Please describe.**
-A clear and concise description of what the problem is.
-
-**Describe the solution you'd like**
-A clear and concise description of what you want to happen.
-
-**Describe alternatives you've considered**
-A clear and concise description of any alternative solutions or features you've considered.
-
-**Additional context**
-Add any other context or graphics (drag-and-drop an image) about the feature request here.

.github/ISSUE_TEMPLATE/006_nomination.md

@@ -1,42 +0,0 @@
----
-name: Contributor Nomination
-about: Nominate a GitHub user for additional rights on the Zephyr Project
-title: ''
-labels: Role Nomination
-assignees: ''
-
----
-
-# Background
-
-The [TSC Project Roles] defines the main roles for the Zephyr Project, including
-Maintainer, Collaborator, and Contributor.
-
-By default anyone that contributes code or documentation is a Contributor, but
-with the lowest [GitHub Permission Level] of Read. For example, Contributors
-with Read permission do not have the permission to add reviewers to a pull
-request.
-
-Use this template to nominate a GitHub user for the Contributor role with
-Triage permission level, which allows the user to add reviewers to a pull
-request and be added as a reviewer by other users.
-
-# Nomination
-
-## GitHub User
-
-Provide the following information about the GitHub user:
-
-1. Full Name
-1. GitHub username
-1. Organization (optional)
-
-## Supporting Documents
-
-Add links to 3-5 GitHub pull requests, in the Zephyr project, authored or
-reviewed by the GitHub user that demonstrate the user's dedication to the
-Zephyr project.
-
-
-[TSC Project Roles]: <https://docs.zephyrproject.org/latest/project/project_roles.html>
-[GitHub Permission Level]: <https://docs.github.com/en/organizations/managing-access-to-your-organizations-repositories/repository-roles-for-an-organization>

.github/ISSUE_TEMPLATE/007_ext-source.md

@@ -1,68 +0,0 @@
----
-name: External Source Code
-about: Submit a proposal to integrate external source code
-title: ''
-labels: TSC
-assignees: ''
-
----
-
-## Origin
-
-Name of project hosting the original open source code
-Provide a link to the source
-
-## Purpose
-
-Brief description of what this software does
-
-## Mode of integration
-
-Describe whether you'd like to integrate this external component in the main tree
-or as a module, and why. If the mode of integration is a module, suggest a
-repository name for the module
-
-## Maintainership
-
-List the person(s) that will be maintaining the integration of this external code
-for the foreseeable future. Please use GitHub IDs to identify them. You can
-choose to identify a single maintainer only or add collaborators as well
-
-## Pull Request
-
-Pull request (if any) with the actual implementation of the integration, be it
-in the main tree or as a module (pointing to your own fork for now). Make sure
-the PR is correctly labeled as "DNM"
-
-## Description
-
-Long description that will help reviewers discuss suitability of the
-component to solve the problem at hand (there may be a better options
-available.)
-
-What is its primary functionality (e.g., SQLLite is a lightweight
-database)?
-
-What problem are you trying to solve? (e.g., a state store is
-required to maintain ...)
-
-Why is this the right component to solve it (e.g., SQLite is small,
-easy to use, and has a very liberal license.)
-
-## Dependencies
-
-What other components does this package depend on?
-
-Will the Zephyr project have a direct dependency on the component, or
-will it be included via an abstraction layer with this component as a
-replaceable implementation?
-
-## Revision
-
-Version or SHA you would like to integrate initially
-
-## License
-
-Please use an SPDX identifier (https://spdx.org/licenses/), such as
-``BSD-3-Clause``
-

.github/ISSUE_TEMPLATE/008_bin-blobs.md

@@ -1,41 +0,0 @@
----
-name: Binary blobs
-about: Submit a proposal to integrate binary blob(s)
-title: ''
-labels: TSC
-assignees: ''
-
----
-
-## Origin
-
-Describe where the binary blob(s) originate from
-
-## Type
-
-- [ ] Precompiled library
-- [ ] Firmware image
-
-## Module
-
-The Zephyr module that this blob(s) will be referenced from
-
-## Purpose
-
-Brief description of what the blob(s) do. It is especially important to describe
-the functionality that the blob(s) provide, to the largest extent possible
-
-## Pull Request
-
-Link to the Pull request with the actual implementation of the integration. If
-you are submitting this as part of a new module you may link to the same Pull
-Request that introduced the new module.
-
-## Dependencies
-
-What other components do the blob(s) depend on, if any?
-
-## License
-
-Document the license the blob(s) are distributed under
-

.github/SECURITY.md

@@ -1,22 +0,0 @@
-# Security Policy
-
-## Supported versions
-
-The Zephyr project supports the following versions with security
-updates:
-
-  - The most recent release, and the release prior to that.
-  - Active LTS releases.
-
-At this time, with the latest release of v3.3, the supported
-versions are:
-
-  - v2.7: Current LTS
-  - v3.2: Prior release
-  - v3.3: Current release
-
-## Reporting process
-
-Please see our [Security Vulnerability
-Reporting](https://docs.zephyrproject.org/latest/security/reporting.html)
-page for details on the process.

.github/license_config.yml

@@ -1,16 +0,0 @@
-license:
-  main: apache-2.0
-  report_missing: true
-  category: Permissive
-copyright:
-  check: true
-exclude:
-  extensions:
-    - yml
-    - yaml
-    - html
-    - rst
-    - conf
-    - cfg
-  langs:
-    - HTML

.github/workflows/assigner.yml

@@ -1,51 +0,0 @@
-name: Pull Request Assigner
-
-on:
-  pull_request_target:
-    types:
-    - opened
-    - synchronize
-    - reopened
-    - ready_for_review
-    branches:
-    - main
-    - v*-branch
-  issues:
-    types:
-    - labeled
-
-jobs:
-  assignment:
-    name: Pull Request Assignment
-    if: github.event.pull_request.draft == false
-    runs-on: ubuntu-22.04
-
-    steps:
-    - name: Install Python dependencies
-      run: |
-        sudo pip3 install -U setuptools wheel pip
-        pip3 install -U PyGithub>=1.55 west
-
-    - name: Check out source code
-      uses: actions/checkout@v3
-
-    - name: Run assignment script
-      env:
-        GITHUB_TOKEN: ${{ secrets.ZB_GITHUB_TOKEN }}
-      run: |
-        FLAGS="-v"
-        FLAGS+=" -o ${{ github.event.repository.owner.login }}"
-        FLAGS+=" -r ${{ github.event.repository.name }}"
-        FLAGS+=" -M MAINTAINERS.yml"
-        if [ "${{ github.event_name }}" = "pull_request_target" ]; then
-            FLAGS+=" -P ${{ github.event.pull_request.number }}"
-        elif [ "${{ github.event_name }}" = "issues" ]; then
-            FLAGS+=" -I ${{ github.event.issue.number }}"
-        elif [ "${{ github.event_name }}" = "schedule" ]; then
-            FLAGS+=" --modules"
-        else
-          echo "Unknown event: ${{ github.event_name }}"
-          exit 1
-        fi
-
-        python3 scripts/set_assignees.py $FLAGS

.github/workflows/backport.yml

@@ -1,31 +0,0 @@
-name: Backport
-on:
-  pull_request_target:
-    types:
-      - closed
-      - labeled
-    branches:
-      - main
-
-jobs:
-  backport:
-    name: Backport
-    runs-on: ubuntu-22.04
-    # Only react to merged PRs for security reasons.
-    # See https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#pull_request_target.
-    if: >
-      github.event.pull_request.merged &&
-      (
-        github.event.action == 'closed' ||
-        (
-          github.event.action == 'labeled' &&
-          contains(github.event.label.name, 'backport')
-        )
-      )
-    steps:
-      - name: Backport
-        uses: zephyrproject-rtos/action-backport@v2.0.3-3
-        with:
-          github_token: ${{ secrets.ZB_GITHUB_TOKEN }}
-          issue_labels: Backport
-          labels_template: '["Backport"]'

.github/workflows/backport_issue_check.yml

@@ -1,31 +0,0 @@
-name: Backport Issue Check
-
-on:
-  pull_request_target:
-    branches:
-      - v*-branch
-
-jobs:
-  backport:
-    name: Backport Issue Check
-    runs-on: ubuntu-22.04
-    if: github.repository == 'zephyrproject-rtos/zephyr'
-
-    steps:
-      - name: Check out source code
-        uses: actions/checkout@v3
-
-      - name: Install Python dependencies
-        run: |
-          sudo pip3 install -U setuptools wheel pip
-          pip3 install -U pygithub
-
-      - name: Run backport issue checker
-        env:
-          GITHUB_TOKEN: ${{ secrets.ZB_GITHUB_TOKEN }}
-        run: |
-          ./scripts/release/list_backports.py \
-            -o ${{ github.event.repository.owner.login }} \
-            -r ${{ github.event.repository.name }} \
-            -b ${{ github.event.pull_request.base.ref }} \
-            -p ${{ github.event.pull_request.number }}

.github/workflows/blackbox_tests.yml

@@ -1,99 +0,0 @@
-# Copyright (c) 2023 Intel Corporation.
-# SPDX-License-Identifier: Apache-2.0
-
-name: Twister BlackBox TestSuite
-
-on:
-  push:
-    branches:
-    - main
-    paths:
-    - 'scripts/pylib/twister/**'
-    - 'scripts/twister'
-    - 'scripts/tests/twister_blackbox/**'
-    - '.github/workflows/blackbox_tests.yml'
-  pull_request:
-    branches:
-    - main
-    paths:
-    - 'scripts/pylib/twister/**'
-    - 'scripts/twister'
-    - 'scripts/tests/twister_blackbox/**'
-    - '.github/workflows/blackbox_tests.yml'
-
-jobs:
-  twister-tests:
-    name: Twister Black Box Tests
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        python-version: [3.8, 3.9, '3.10']
-        os: [ubuntu-22.04]
-    container:
-      image: ghcr.io/zephyrproject-rtos/ci:v0.26.4
-    env:
-      ZEPHYR_SDK_INSTALL_DIR: /opt/toolchains/zephyr-sdk-0.16.1
-
-    steps:
-    - name: Apply Container Owner Mismatch Workaround
-      run: |
-        # FIXME: The owner UID of the GITHUB_WORKSPACE directory may not
-        #        match the container user UID because of the way GitHub
-        #        Actions runner is implemented. Remove this workaround when
-        #        GitHub comes up with a fundamental fix for this problem.
-        git config --global --add safe.directory ${GITHUB_WORKSPACE}
-
-    - name: Checkout
-      uses: actions/checkout@v3
-
-    - name: Environment Setup
-      run: |
-        echo "$HOME/.local/bin" >> $GITHUB_PATH
-
-        west init -l . || true
-        west config --global update.narrow true
-        west update --path-cache /github/cache/zephyrproject 2>&1 1> west.update.log || west update --path-cache /github/cache/zephyrproject 2>&1 1> west.update.log || ( rm -rf ../modules ../bootloader ../tools && west update --path-cache /github/cache/zephyrproject)
-        west forall -c 'git reset --hard HEAD'
-
-    - name: Set Up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v4
-      with:
-        python-version: ${{ matrix.python-version }}
-
-    - name: Go Into Venv
-      shell: bash
-      run: |
-        python3 -m pip install --user virtualenv
-        python3 -m venv env
-        source env/bin/activate
-        echo "$(which python)"
-
-    - name: Install Packages
-      run: |
-        python3 -m pip install -U -r scripts/requirements-base.txt -r scripts/requirements-build-test.txt -r scripts/requirements-run-test.txt
-
-    - name: Run Pytest For Twister Black Box Tests
-      shell: bash
-      env:
-        ZEPHYR_BASE: ./
-        ZEPHYR_TOOLCHAIN_VARIANT: zephyr
-      run: |
-        echo "Run twister tests"
-        source zephyr-env.sh
-        PYTHONPATH="./scripts/tests" pytest ./scripts/tests/twister_blackbox
-
-    - name: Upload Unit Test Results
-      if: success() || failure()
-      uses: actions/upload-artifact@v2
-      with:
-        name: Black Box Test Results (Python ${{ matrix.python-version }})
-        path: |
-          twister-out*/twister.log
-          twister-out*/twister.json
-          twister-out*/testplan.log
-        retention-days: 14
-
-    - name: Clear Workspace
-      if: success() || failure()
-      run: |
-        rm -rf twister-out*/

.github/workflows/bsim-tests-publish.yaml

@@ -1,28 +0,0 @@
-name: Publish BabbleSim Tests Results
-
-on:
-  workflow_run:
-    workflows: ["BabbleSim Tests"]
-    types:
-      - completed
-jobs:
-  bsim-test-results:
-    name: "Publish BabbleSim Test Results"
-    runs-on: ubuntu-22.04
-    if: github.event.workflow_run.conclusion != 'skipped'
-
-    steps:
-      - name: Download artifacts
-        uses: dawidd6/action-download-artifact@v2
-        with:
-          run_id: ${{ github.event.workflow_run.id }}
-
-      - name: Publish BabbleSim Test Results
-        uses: EnricoMi/publish-unit-test-result-action@v2
-        with:
-          check_name: BabbleSim Test Results
-          comment_mode: off
-          commit: ${{ github.event.workflow_run.head_sha }}
-          event_file: event/event.json
-          event_name: ${{ github.event.workflow_run.event }}
-          files: "bsim-test-results/**/bsim_results.xml"

.github/workflows/bsim-tests.yaml

@@ -1,165 +0,0 @@
-name: BabbleSim Tests
-
-on:
-  pull_request:
-    paths:
-      - ".github/workflows/bsim-tests.yaml"
-      - ".github/workflows/bsim-tests-publish.yaml"
-      - "west.yml"
-      - "subsys/bluetooth/**"
-      - "tests/bsim/**"
-      - "samples/bluetooth/**"
-      - "boards/posix/**"
-      - "soc/posix/**"
-      - "arch/posix/**"
-      - "include/zephyr/arch/posix/**"
-      - "scripts/native_simulator/**"
-      - "samples/net/sockets/echo_*/**"
-      - "modules/openthread/**"
-      - "subsys/net/l2/openthread/**"
-      - "include/zephyr/net/openthread.h"
-      - "drivers/ieee802154/**"
-      - "include/zephyr/net/ieee802154*"
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.head_ref || github.ref }}
-  cancel-in-progress: true
-
-jobs:
-  bsim-test:
-    if: github.repository_owner == 'zephyrproject-rtos'
-    runs-on: zephyr-runner-linux-x64-4xlarge
-    container:
-      image: ghcr.io/zephyrproject-rtos/ci:v0.26.4
-      options: '--entrypoint /bin/bash'
-      volumes:
-        - /repo-cache/zephyrproject:/github/cache/zephyrproject
-    env:
-      ZEPHYR_TOOLCHAIN_VARIANT: zephyr
-      ZEPHYR_SDK_INSTALL_DIR: /opt/toolchains/zephyr-sdk-0.16.1
-      BSIM_OUT_PATH: /opt/bsim/
-      BSIM_COMPONENTS_PATH: /opt/bsim/components
-      EDTT_PATH: ../tools/edtt
-      bsim_bluetooth_test_results_file: ./bsim_bluetooth/bsim_results.xml
-      bsim_networking_test_results_file: ./bsim_net/bsim_results.xml
-    steps:
-      - name: Apply container owner mismatch workaround
-        run: |
-          # FIXME: The owner UID of the GITHUB_WORKSPACE directory may not
-          #        match the container user UID because of the way GitHub
-          #        Actions runner is implemented. Remove this workaround when
-          #        GitHub comes up with a fundamental fix for this problem.
-          git config --global --add safe.directory ${GITHUB_WORKSPACE}
-
-      - name: Clone cached Zephyr repository
-        continue-on-error: true
-        run: |
-          git clone --shared /github/cache/zephyrproject/zephyr .
-          git remote set-url origin ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}
-
-      - name: Checkout
-        uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
-
-      - name: Environment Setup
-        env:
-          BASE_REF: ${{ github.base_ref }}
-        run: |
-          git config --global user.email "bot@zephyrproject.org"
-          git config --global user.name "Zephyr Bot"
-          rm -fr ".git/rebase-apply"
-          git rebase origin/${BASE_REF}
-          git log  --pretty=oneline | head -n 10
-          west init -l . || true
-          west config manifest.group-filter -- +ci
-          west config --global update.narrow true
-          west update --path-cache /github/cache/zephyrproject 2>&1 1> west.update.log || west update --path-cache /github/cache/zephyrproject 2>&1 1> west.update.log || ( rm -rf ../modules ../bootloader ../tools && west update --path-cache /github/cache/zephyrproject)
-          west forall -c 'git reset --hard HEAD'
-
-      - name: Check common triggering files
-        uses: tj-actions/changed-files@v35
-        id: check-common-files
-        with:
-          files: |
-            .github/workflows/bsim-tests.yaml
-            .github/workflows/bsim-tests-publish.yaml
-            west.yml
-            boards/posix/**
-            soc/posix/**
-            arch/posix/**
-            include/zephyr/arch/posix/**
-            scripts/native_simulator/**
-            tests/bsim/*
-
-      - name: Check if Bluethooth files changed
-        uses: tj-actions/changed-files@v35
-        id: check-bluetooth-files
-        with:
-          files: |
-            tests/bsim/bluetooth/**
-            samples/bluetooth/**
-            subsys/bluetooth/**
-
-      - name: Check if Networking files changed
-        uses: tj-actions/changed-files@v35
-        id: check-networking-files
-        with:
-          files: |
-            tests/bsim/net/**
-            samples/net/sockets/echo_*/**
-            modules/openthread/**
-            subsys/net/l2/openthread/**
-            include/zephyr/net/openthread.h
-            drivers/ieee802154/**
-            include/zephyr/net/ieee802154*
-
-      - name: Update BabbleSim to manifest revision
-        if: >
-          steps.check-bluetooth-files.outputs.any_changed == 'true'
-          || steps.check-networking-files.outputs.any_changed == 'true'
-          || steps.check-common-files.outputs.any_changed == 'true'
-        run: |
-          export BSIM_VERSION=$( west list bsim -f {revision} )
-          echo "Manifest points to bsim sha $BSIM_VERSION"
-          cd /opt/bsim_west/bsim
-          git fetch -n origin ${BSIM_VERSION}
-          git config --global advice.detachedHead false
-          git checkout ${BSIM_VERSION}
-          west update
-          make everything -s -j 8
-
-      - name: Run Bluetooth Tests with BSIM
-        if: steps.check-bluetooth-files.outputs.any_changed == 'true' || steps.check-common-files.outputs.any_changed == 'true'
-        run: |
-          export ZEPHYR_BASE=${PWD}
-          WORK_DIR=${ZEPHYR_BASE}/bsim_bluetooth nice tests/bsim/bluetooth/compile.sh
-          RESULTS_FILE=${ZEPHYR_BASE}/${bsim_bluetooth_test_results_file} \
-          SEARCH_PATH=tests/bsim/bluetooth/ tests/bsim/run_parallel.sh
-
-      - name: Run Networking Tests with BSIM
-        if: steps.check-networking-files.outputs.any_changed == 'true' || steps.check-common-files.outputs.any_changed == 'true'
-        run: |
-          export ZEPHYR_BASE=${PWD}
-          WORK_DIR=${ZEPHYR_BASE}/bsim_net nice tests/bsim/net/compile.sh
-          RESULTS_FILE=${ZEPHYR_BASE}/${bsim_networking_test_results_file} \
-          SEARCH_PATH=tests/bsim/net/ tests/bsim/run_parallel.sh
-
-      - name: Upload Test Results
-        if: always()
-        uses: actions/upload-artifact@v3
-        with:
-          name: bsim-test-results
-          path: |
-            ./bsim_bluetooth/bsim_results.xml
-            ./bsim_net/bsim_results.xml
-            ${{ github.event_path }}
-          if-no-files-found: warn
-
-      - name: Upload Event Details
-        if: always()
-        uses: actions/upload-artifact@v3
-        with:
-          name: event
-          path: |
-            ${{ github.event_path }}

.github/workflows/bug_snapshot.yaml

@@ -1,67 +0,0 @@
-# Copyright (c) 2021, 2022 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-# Make a snapshot of open bugs as a python pickle file, compressed
-# using xz. Upload the xz file to Amazon S3.
-
-name: Bug Snapshot
-
-on:
-  workflow_dispatch:
-    branches: [main]
-  schedule:
-  # Run daily at 14:05
-  - cron: '5 14 * * *'
-
-jobs:
-  make_bugs_pickle:
-    name: Make bugs pickle
-    runs-on: ubuntu-22.04
-    if: github.repository_owner == 'zephyrproject-rtos'
-
-    steps:
-    - name: Checkout
-      uses: actions/checkout@v3
-
-    - name: Install Python dependencies
-      run: |
-        sudo pip3 install -U setuptools wheel pip
-        pip3 install -U pygithub
-
-    - name: Snapshot bugs
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      run: |
-        BUGS_PICKLE_FILENAME="zephyr-bugs-$(date -I).pickle.xz"
-        BUGS_PICKLE_PATH="${RUNNER_TEMP}/${BUGS_PICKLE_FILENAME}"
-
-        set -euo pipefail
-        python3 scripts/make_bugs_pickle.py | xz > ${BUGS_PICKLE_PATH}
-
-        echo "BUGS_PICKLE_FILENAME=${BUGS_PICKLE_FILENAME}" >> ${GITHUB_ENV}
-        echo "BUGS_PICKLE_PATH=${BUGS_PICKLE_PATH}" >> ${GITHUB_ENV}
-
-    - name: Configure AWS Credentials
-      uses: aws-actions/configure-aws-credentials@v2
-      with:
-        aws-access-key-id: ${{ vars.AWS_BUILDS_ZEPHYR_BUG_SNAPSHOT_ACCESS_KEY_ID }}
-        aws-secret-access-key: ${{ secrets.AWS_BUILDS_ZEPHYR_BUG_SNAPSHOT_SECRET_ACCESS_KEY }}
-        aws-region: us-east-1
-
-    - name: Upload to AWS S3
-      run: |
-        REPOSITORY_NAME="${GITHUB_REPOSITORY#*/}"
-
-        PUBLISH_BUCKET="builds.zephyrproject.org"
-        PUBLISH_DOMAIN="builds.zephyrproject.io"
-        if [ "${{github.event_name}}" = "schedule" ]; then
-          PUBLISH_ROOT="${REPOSITORY_NAME}/bug-snapshot/daily"
-        else
-          PUBLISH_ROOT="${REPOSITORY_NAME}/bug-snapshot"
-        fi
-
-        PUBLISH_UPLOAD_URI="s3://${PUBLISH_BUCKET}/${PUBLISH_ROOT}/${BUGS_PICKLE_FILENAME}"
-        PUBLISH_DOWNLOAD_URI="https://${PUBLISH_DOMAIN}/${PUBLISH_ROOT}/${BUGS_PICKLE_FILENAME}"
-
-        aws s3 cp --quiet ${BUGS_PICKLE_PATH} ${PUBLISH_UPLOAD_URI}
-        echo "Bug pickle is available at: ${PUBLISH_DOWNLOAD_URI}" >> ${GITHUB_STEP_SUMMARY}

.github/workflows/clang.yaml

@@ -1,163 +0,0 @@
-name: Build with Clang/LLVM
-
-on: pull_request_target
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.head_ref || github.ref }}
-  cancel-in-progress: true
-
-jobs:
-  clang-build:
-    if: github.repository_owner == 'zephyrproject-rtos'
-    runs-on: zephyr-runner-linux-x64-4xlarge
-    container:
-      image: ghcr.io/zephyrproject-rtos/ci:v0.26.4
-      options: '--entrypoint /bin/bash'
-      volumes:
-        - /repo-cache/zephyrproject:/github/cache/zephyrproject
-    strategy:
-      fail-fast: false
-      matrix:
-        platform: ["native_posix"]
-    env:
-      ZEPHYR_SDK_INSTALL_DIR: /opt/toolchains/zephyr-sdk-0.16.1
-      LLVM_TOOLCHAIN_PATH: /usr/lib/llvm-16
-      COMMIT_RANGE: ${{ github.event.pull_request.base.sha }}..${{ github.event.pull_request.head.sha }}
-      BASE_REF: ${{ github.base_ref }}
-    outputs:
-      report_needed: ${{ steps.twister.outputs.report_needed }}
-    steps:
-      - name: Apply container owner mismatch workaround
-        run: |
-          # FIXME: The owner UID of the GITHUB_WORKSPACE directory may not
-          #        match the container user UID because of the way GitHub
-          #        Actions runner is implemented. Remove this workaround when
-          #        GitHub comes up with a fundamental fix for this problem.
-          git config --global --add safe.directory ${GITHUB_WORKSPACE}
-
-      - name: Clone cached Zephyr repository
-        continue-on-error: true
-        run: |
-          git clone --shared /github/cache/zephyrproject/zephyr .
-          git remote set-url origin ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}
-
-      - name: Checkout
-        uses: actions/checkout@v3
-        with:
-          ref: ${{ github.event.pull_request.head.sha }}
-          fetch-depth: 0
-          persist-credentials: false
-
-      - name: Environment Setup
-        run: |
-          echo "$HOME/.local/bin" >> $GITHUB_PATH
-          git config --global user.email "bot@zephyrproject.org"
-          git config --global user.name "Zephyr Bot"
-          rm -fr ".git/rebase-apply"
-          git rebase origin/${BASE_REF}
-          git log  --pretty=oneline | head -n 10
-          west init -l . || true
-          west config --global update.narrow true
-          # In some cases modules are left in a state where they can't be
-          # updated (i.e. when we cancel a job and the builder is killed),
-          # So first retry to update, if that does not work, remove all modules
-          # and start over. (Workaround until we implement more robust module
-          # west caching).
-          west update --path-cache /github/cache/zephyrproject 2>&1 1> west.log || west update --path-cache /github/cache/zephyrproject 2>&1 1> west2.log || ( rm -rf ../modules ../bootloader ../tools && west update --path-cache /github/cache/zephyrproject)
-
-      - name: Check Environment
-        run: |
-          cmake --version
-          ${LLVM_TOOLCHAIN_PATH}/bin/clang --version
-          gcc --version
-          ls -la
-
-      - name: Prepare ccache timestamp/data
-        id: ccache_cache_timestamp
-        shell: cmake -P {0}
-        run: |
-          string(TIMESTAMP current_date "%Y-%m-%d-%H;%M;%S" UTC)
-          string(REPLACE "/" "_" repo ${{github.repository}})
-          string(REPLACE "-" "_" repo2 ${repo})
-          file(APPEND $ENV{GITHUB_OUTPUT} "repo=${repo2}\n")
-
-      - name: use cache
-        id: cache-ccache
-        uses: zephyrproject-rtos/action-s3-cache@v1.2.0
-        with:
-          key: ${{ steps.ccache_cache_timestamp.outputs.repo }}-${{ github.ref_name }}-clang-${{ matrix.platform }}-ccache
-          path: /github/home/.cache/ccache
-          aws-s3-bucket: ccache.zephyrproject.org
-          aws-access-key-id: ${{ vars.AWS_CCACHE_ACCESS_KEY_ID }}
-          aws-secret-access-key: ${{ secrets.AWS_CCACHE_SECRET_ACCESS_KEY }}
-          aws-region: us-east-2
-
-      - name: ccache stats initial
-        run: |
-          mkdir -p /github/home/.cache
-          test -d github/home/.cache/ccache && rm -rf /github/home/.cache/ccache && mv github/home/.cache/ccache /github/home/.cache/ccache
-          ccache -M 10G -s
-
-      - name: Run Tests with Twister
-        id: twister
-        run: |
-          export ZEPHYR_BASE=${PWD}
-          export ZEPHYR_TOOLCHAIN_VARIANT=llvm
-
-          # check if we need to run a full twister or not based on files changed
-          python3 ./scripts/ci/test_plan.py --platform ${{ matrix.platform }} -c origin/${BASE_REF}..
-
-          # We can limit scope to just what has changed
-          if [ -s testplan.json ]; then
-            echo "report_needed=1" >> $GITHUB_OUTPUT
-            # Full twister but with options based on changes
-            ./scripts/twister --force-color --inline-logs -M -N -v --load-tests testplan.json --retry-failed 2
-          else
-            # if nothing is run, skip reporting step
-            echo "report_needed=0" >> $GITHUB_OUTPUT
-          fi
-
-      - name: ccache stats post
-        run: |
-          ccache -s
-          ccache -p
-
-      - name: Upload Unit Test Results
-        if: always() && steps.twister.outputs.report_needed != 0
-        uses: actions/upload-artifact@v3
-        with:
-          name: Unit Test Results (Subset ${{ matrix.platform }})
-          path: twister-out/twister.xml
-
-  clang-build-results:
-    name: "Publish Unit Tests Results"
-    needs: clang-build
-    runs-on: ubuntu-22.04
-    if: (success() || failure() ) && needs.clang-build.outputs.report_needed != 0
-    steps:
-      - name: Download Artifacts
-        uses: actions/download-artifact@v3
-        with:
-          path: artifacts
-      - name: Merge Test Results
-        run: |
-          pip3 install junitparser junit2html
-          junitparser merge artifacts/*/twister.xml junit.xml
-          junit2html junit.xml junit-clang.html
-
-      - name: Upload Unit Test Results in HTML
-        if: always()
-        uses: actions/upload-artifact@v3
-        with:
-          name: HTML Unit Test Results
-          if-no-files-found: ignore
-          path: |
-            junit-clang.html
-
-      - name: Publish Unit Test Results
-        uses: EnricoMi/publish-unit-test-result-action@v2
-        if: always()
-        with:
-          check_name: Unit Test Results
-          files: "**/twister.xml"
-          comment_mode: off

.github/workflows/codecov.yaml

@@ -1,176 +0,0 @@
-name: Code Coverage with codecov
-
-on:
-  schedule:
-    - cron: '25 */3 * * 1-5'
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.head_ref || github.ref }}
-  cancel-in-progress: true
-
-jobs:
-  codecov:
-    if: github.repository == 'zephyrproject-rtos/zephyr'
-    runs-on: zephyr-runner-linux-x64-4xlarge
-    container:
-      image: ghcr.io/zephyrproject-rtos/ci:v0.26.4
-      options: '--entrypoint /bin/bash'
-      volumes:
-        - /repo-cache/zephyrproject:/github/cache/zephyrproject
-    strategy:
-      fail-fast: false
-      matrix:
-        platform: ["native_posix", "qemu_x86", "unit_testing"]
-    env:
-      ZEPHYR_SDK_INSTALL_DIR: /opt/toolchains/zephyr-sdk-0.16.1
-    steps:
-      - name: Apply container owner mismatch workaround
-        run: |
-          # FIXME: The owner UID of the GITHUB_WORKSPACE directory may not
-          #        match the container user UID because of the way GitHub
-          #        Actions runner is implemented. Remove this workaround when
-          #        GitHub comes up with a fundamental fix for this problem.
-          git config --global --add safe.directory ${GITHUB_WORKSPACE}
-
-      - name: Update PATH for west
-        run: |
-          echo "$HOME/.local/bin" >> $GITHUB_PATH
-
-      - name: Clone cached Zephyr repository
-        continue-on-error: true
-        run: |
-          git clone --shared /github/cache/zephyrproject/zephyr .
-          git remote set-url origin ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}
-
-      - name: checkout
-        uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
-
-      - name: west setup
-        run: |
-          west init -l . || true
-          west update 1> west.update.log || west update 1> west.update-2.log
-
-      - name: Check Environment
-        run: |
-          cmake --version
-          gcc --version
-          ls -la
-      - name: Prepare ccache keys
-        id: ccache_cache_prop
-        shell: cmake -P {0}
-        run: |
-          string(REPLACE "/" "_" repo ${{github.repository}})
-          string(REPLACE "-" "_" repo2 ${repo})
-          file(APPEND $ENV{GITHUB_OUTPUT} "repo=${repo2}\n")
-
-      - name: use cache
-        id: cache-ccache
-        uses: zephyrproject-rtos/action-s3-cache@v1.2.0
-        with:
-          key: ${{ steps.ccache_cache_prop.outputs.repo }}-${{github.event_name}}-${{matrix.platform}}-codecov-ccache
-          path: /github/home/.cache/ccache
-          aws-s3-bucket: ccache.zephyrproject.org
-          aws-access-key-id: ${{ vars.AWS_CCACHE_ACCESS_KEY_ID }}
-          aws-secret-access-key: ${{ secrets.AWS_CCACHE_SECRET_ACCESS_KEY }}
-          aws-region: us-east-2
-
-      - name: ccache stats initial
-        run: |
-          mkdir -p /github/home/.cache
-          test -d github/home/.cache/ccache && mv github/home/.cache/ccache /github/home/.cache/ccache
-          ccache -M 10G -s
-
-      - name: Run Tests with Twister (Push)
-        continue-on-error: true
-        run: |
-          export ZEPHYR_BASE=${PWD}
-          export ZEPHYR_TOOLCHAIN_VARIANT=zephyr
-          mkdir -p coverage/reports
-          ./scripts/twister --force-color -N -v --filter runnable -p ${{ matrix.platform }} --coverage -T tests
-
-      - name: Generate Coverage Report
-        run: |
-          mv twister-out/coverage.info lcov.pre.info
-          lcov -q --remove lcov.pre.info mylib.c --remove lcov.pre.info tests/\* \
-            --remove lcov.pre.info samples/\* --remove lcov.pre.info ext/\* \
-            --remove lcov.pre.info *generated*  \
-            -o coverage/reports/${{ matrix.platform }}.info --rc lcov_branch_coverage=1
-
-      - name: ccache stats post
-        run: |
-          ccache -s
-          ccache -p
-
-      - name: Upload Coverage Results
-        if: always()
-        uses: actions/upload-artifact@v3
-        with:
-          name: Coverage Data (Subset ${{ matrix.platform }})
-          path: coverage/reports/${{ matrix.platform }}.info
-
-  codecov-results:
-    name: "Publish Coverage Results"
-    needs: codecov
-    runs-on: ubuntu-22.04
-    # the codecov job might be skipped, we don't need to run this job then
-    if: success() || failure()
-
-    steps:
-      - name: checkout
-        uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
-      - name: Download Artifacts
-        uses: actions/download-artifact@v3
-        with:
-          path: coverage/reports
-
-      - name: Move coverage files
-        run: |
-          mv ./coverage/reports/*/*.info ./coverage/reports
-          ls -la ./coverage/reports
-
-      - name: Generate list of coverage files
-        id: get-coverage-files
-        shell: cmake -P {0}
-        run: |
-          file(GLOB INPUT_FILES_LIST  "coverage/reports/*.info")
-          set(MERGELIST "")
-          set(FILELIST "")
-          foreach(ITEM ${INPUT_FILES_LIST})
-            get_filename_component(f ${ITEM} NAME)
-            if(FILELIST STREQUAL "")
-              set(FILELIST "${f}")
-            else()
-              set(FILELIST "${FILELIST},${f}")
-            endif()
-          endforeach()
-          foreach(ITEM ${INPUT_FILES_LIST})
-            get_filename_component(f ${ITEM} NAME)
-            if(MERGELIST STREQUAL "")
-              set(MERGELIST "-a ${f}")
-            else()
-              set(MERGELIST "${MERGELIST} -a ${f}")
-            endif()
-          endforeach()
-          file(APPEND $ENV{GITHUB_OUTPUT} "mergefiles=${MERGELIST}\n")
-          file(APPEND $ENV{GITHUB_OUTPUT} "covfiles=${FILELIST}\n")
-
-      - name: Merge coverage files
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y lcov
-          cd ./coverage/reports
-          lcov ${{ steps.get-coverage-files.outputs.mergefiles }} -o merged.info --rc lcov_branch_coverage=1
-
-      - name: Upload coverage to Codecov
-        if: always()
-        uses: codecov/codecov-action@v3
-        with:
-          directory: ./coverage/reports
-          env_vars: OS,PYTHON
-          fail_ci_if_error: false
-          verbose: true
-          files: merged.info

.github/workflows/coding_guidelines.yml

@@ -1,59 +0,0 @@
-name: Coding Guidelines
-
-on: pull_request
-
-jobs:
-  compliance_job:
-    runs-on: ubuntu-22.04
-    name: Run coding guidelines checks on patch series (PR)
-    steps:
-    - name: Checkout the code
-      uses: actions/checkout@v3
-      with:
-        ref: ${{ github.event.pull_request.head.sha }}
-        fetch-depth: 0
-
-    - name: cache-pip
-      uses: actions/cache@v3
-      with:
-        path: ~/.cache/pip
-        key: ${{ runner.os }}-doc-pip
-
-    - name: Install python dependencies
-      run: |
-        pip3 install unidiff
-        pip3 install wheel
-        pip3 install sh
-
-    - name: Install Packages
-      run: |
-        sudo apt-get update
-        sudo apt-get install coccinelle
-
-    - name: Run Coding Guildeines Checks
-      continue-on-error: true
-      id: coding_guidelines
-      env:
-        BASE_REF: ${{ github.base_ref }}
-      run: |
-        export ZEPHYR_BASE=$PWD
-        git config --global user.email "actions@zephyrproject.org"
-        git config --global user.name "Github Actions"
-        git remote -v
-        git rebase origin/${BASE_REF}
-        source zephyr-env.sh
-        # debug
-        ls -la
-        git log  --pretty=oneline | head -n 10
-        ./scripts/ci/guideline_check.py --output output.txt -c origin/${BASE_REF}..
-
-    - name: check-warns
-      run: |
-        if [[ -s "output.txt" ]]; then
-            errors=$(cat output.txt)
-            errors="${errors//'%'/'%25'}"
-            errors="${errors//$'\n'/'%0A'}"
-            errors="${errors//$'\r'/'%0D'}"
-            echo "::error file=output.txt::$errors"
-            exit 1;
-        fi

.github/workflows/compliance.yml

@@ -1,90 +0,0 @@
-name: Compliance Checks
-
-on: pull_request
-
-jobs:
-  check_compliance:
-    runs-on: ubuntu-22.04
-    name: Run compliance checks on patch series (PR)
-    steps:
-    - name: Update PATH for west
-      run: |
-        echo "$HOME/.local/bin" >> $GITHUB_PATH
-
-    - name: Checkout the code
-      uses: actions/checkout@v3
-      with:
-        ref: ${{ github.event.pull_request.head.sha }}
-        fetch-depth: 0
-
-    - name: cache-pip
-      uses: actions/cache@v3
-      with:
-        path: ~/.cache/pip
-        key: ${{ runner.os }}-doc-pip
-
-    - name: Install python dependencies
-      run: |
-        pip3 install setuptools
-        pip3 install wheel
-        pip3 install python-magic lxml junitparser gitlint pylint pykwalify yamllint
-        pip3 install west
-
-    - name: west setup
-      env:
-        BASE_REF: ${{ github.base_ref }}
-      run: |
-        git config --global user.email "you@example.com"
-        git config --global user.name "Your Name"
-        git remote -v
-        # Ensure there's no merge commits in the PR
-        [[ "$(git rev-list --merges --count origin/${BASE_REF}..)" == "0" ]] || \
-        (echo "::error ::Merge commits not allowed, rebase instead";false)
-        git rebase origin/${BASE_REF}
-        # debug
-        git log  --pretty=oneline | head -n 10
-        west init -l . || true
-        west update 2>&1 1> west.update.log || west update 2>&1 1> west.update2.log
-
-    - name: Run Compliance Tests
-      continue-on-error: true
-      id: compliance
-      env:
-        BASE_REF: ${{ github.base_ref }}
-      run: |
-        export ZEPHYR_BASE=$PWD
-        # debug
-        ls -la
-        git log  --pretty=oneline | head -n 10
-        ./scripts/ci/check_compliance.py --annotate -e KconfigBasic \
-        -c origin/${BASE_REF}..
-
-    - name: upload-results
-      uses: actions/upload-artifact@v3
-      continue-on-error: true
-      with:
-        name: compliance.xml
-        path: compliance.xml
-
-    - name: check-warns
-      run: |
-        if [[ ! -s "compliance.xml" ]]; then
-          exit 1;
-        fi
-
-        files=($(./scripts/ci/check_compliance.py -l))
-        for file in "${files[@]}"; do
-          f="${file}.txt"
-          if [[ -s $f ]]; then
-            errors=$(cat $f)
-            errors="${errors//'%'/'%25'}"
-            errors="${errors//$'\n'/'%0A'}"
-            errors="${errors//$'\r'/'%0D'}"
-            echo "::error file=${f}::$errors"
-            exit=1
-          fi
-        done
-
-        if [ "${exit}" == "1" ]; then
-          exit 1;
-        fi

.github/workflows/daily_test_version.yml

@@ -1,38 +0,0 @@
-# Copyright (c) 2020 Intel Corp.
-# SPDX-License-Identifier: Apache-2.0
-
-name: Publish commit for daily testing
-
-on:
-  schedule:
-  - cron: '50 22 * * *'
-  push:
-    branches:
-    - refs/tags/*
-
-jobs:
-  get_version:
-    runs-on: ubuntu-22.04
-    if: github.repository == 'zephyrproject-rtos/zephyr'
-
-    steps:
-    - name: Configure AWS Credentials
-      uses: aws-actions/configure-aws-credentials@v2
-      with:
-        aws-access-key-id: ${{ vars.AWS_TESTING_ACCESS_KEY_ID }}
-        aws-secret-access-key: ${{ secrets.AWS_TESTING_SECRET_ACCESS_KEY }}
-        aws-region: us-east-1
-
-    - name: install-pip
-      run: |
-        pip3 install gitpython
-
-    - name: checkout
-      uses: actions/checkout@v3
-      with:
-        fetch-depth: 0
-
-    - name: Upload to AWS S3
-      run: |
-        python3 scripts/ci/version_mgr.py --update .
-        aws s3 cp versions.json s3://testing.zephyrproject.org/daily_tests/versions.json

.github/workflows/devicetree_checks.yml

@@ -1,75 +0,0 @@
-# Copyright (c) 2020 Linaro Limited.
-# Copyright (c) 2020 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-name: Devicetree script tests
-
-on:
-  push:
-    branches:
-    - main
-    - v*-branch
-    paths:
-    - 'scripts/dts/**'
-    - '.github/workflows/devicetree_checks.yml'
-  pull_request:
-    branches:
-    - main
-    - v*-branch
-    paths:
-    - 'scripts/dts/**'
-    - '.github/workflows/devicetree_checks.yml'
-
-jobs:
-  devicetree-checks:
-    name: Devicetree script tests
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        python-version: [3.8, 3.9, '3.10']
-        os: [ubuntu-22.04, macos-11, windows-2022]
-        exclude:
-        - os: macos-11
-          python-version: 3.6
-        - os: windows-2022
-          python-version: 3.6
-    steps:
-    - name: checkout
-      uses: actions/checkout@v3
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v4
-      with:
-        python-version: ${{ matrix.python-version }}
-    - name: cache-pip-linux
-      if: startsWith(runner.os, 'Linux')
-      uses: actions/cache@v3
-      with:
-        path: ~/.cache/pip
-        key: ${{ runner.os }}-pip-${{ matrix.python-version }}
-        restore-keys: |
-          ${{ runner.os }}-pip-${{ matrix.python-version }}
-    - name: cache-pip-mac
-      if: startsWith(runner.os, 'macOS')
-      uses: actions/cache@v3
-      with:
-        path: ~/Library/Caches/pip
-        # Trailing '-' was just to get a different cache name
-        key: ${{ runner.os }}-pip-${{ matrix.python-version }}-
-        restore-keys: |
-          ${{ runner.os }}-pip-${{ matrix.python-version }}-
-    - name: cache-pip-win
-      if: startsWith(runner.os, 'Windows')
-      uses: actions/cache@v3
-      with:
-        path: ~\AppData\Local\pip\Cache
-        key: ${{ runner.os }}-pip-${{ matrix.python-version }}
-        restore-keys: |
-          ${{ runner.os }}-pip-${{ matrix.python-version }}
-    - name: install python dependencies
-      run: |
-        pip3 install wheel
-        pip3 install pytest pyyaml tox
-    - name: run tox
-      working-directory: scripts/dts/python-devicetree
-      run: |
-        tox

.github/workflows/do_not_merge.yml

@@ -1,18 +0,0 @@
-name: Do Not Merge
-
-on:
-  pull_request:
-    types: [synchronize, opened, reopened, labeled, unlabeled]
-
-jobs:
-  do-not-merge:
-    if: ${{ contains(github.event.*.labels.*.name, 'DNM') ||
-            contains(github.event.*.labels.*.name, 'TSC') }}
-    name: Prevent Merging
-    runs-on: ubuntu-22.04
-    steps:
-      - name: Check for label
-        run: |
-          echo "Pull request is labeled as 'DNM' or 'TSC'"
-          echo "This workflow fails so that the pull request cannot be merged"
-          exit 1

.github/workflows/doc-build.yml

@@ -1,179 +0,0 @@
-# Copyright (c) 2020 Linaro Limited.
-# SPDX-License-Identifier: Apache-2.0
-
-name: Documentation Build
-
-on:
-  schedule:
-  - cron: '0 */3 * * *'
-  push:
-    tags:
-    - v*
-  pull_request:
-    paths:
-    - 'doc/**'
-    - '**.rst'
-    - 'include/**'
-    - 'kernel/include/kernel_arch_interface.h'
-    - 'lib/libc/**'
-    - 'subsys/testsuite/ztest/include/**'
-    - 'tests/**'
-    - '**/Kconfig*'
-    - 'west.yml'
-    - '.github/workflows/doc-build.yml'
-    - 'scripts/dts/**'
-    - 'doc/requirements.txt'
-
-env:
-  # NOTE: west docstrings will be extracted from the version listed here
-  WEST_VERSION: 1.0.0
-  # The latest CMake available directly with apt is 3.18, but we need >=3.20
-  # so we fetch that through pip.
-  CMAKE_VERSION: 3.20.5
-  DOXYGEN_VERSION: 1.9.6
-
-jobs:
-  doc-build-html:
-    name: "Documentation Build (HTML)"
-    runs-on: zephyr-runner-linux-x64-4xlarge
-    timeout-minutes: 45
-    concurrency:
-      group: doc-build-html-${{ github.ref }}
-      cancel-in-progress: true
-
-    steps:
-    - name: checkout
-      uses: actions/checkout@v3
-
-    - name: install-pkgs
-      run: |
-        sudo apt-get update
-        sudo apt-get install -y ninja-build graphviz
-        wget --no-verbose "https://github.com/doxygen/doxygen/releases/download/Release_${DOXYGEN_VERSION//./_}/doxygen-${DOXYGEN_VERSION}.linux.bin.tar.gz"
-        tar xf doxygen-${DOXYGEN_VERSION}.linux.bin.tar.gz
-        echo "${PWD}/doxygen-${DOXYGEN_VERSION}/bin" >> $GITHUB_PATH
-
-    - name: cache-pip
-      uses: actions/cache@v3
-      with:
-        path: ~/.cache/pip
-        key: pip-${{ hashFiles('doc/requirements.txt') }}
-
-    - name: install-pip
-      run: |
-        sudo pip3 install -U setuptools wheel pip
-        pip3 install -r doc/requirements.txt
-        pip3 install west==${WEST_VERSION}
-        pip3 install cmake==${CMAKE_VERSION}
-
-    - name: west setup
-      run: |
-        west init -l .
-
-    - name: build-docs
-      shell: bash
-      run: |
-        if [[ "$GITHUB_REF" =~ "refs/tags/v" ]]; then
-          DOC_TAG="release"
-        else
-          DOC_TAG="development"
-        fi
-
-        if [[ "${{ github.event_name }}" == "pull_request" ]]; then
-          DOC_TARGET="html-fast"
-        else
-          DOC_TARGET="html"
-        fi
-
-        DOC_TAG=${DOC_TAG} SPHINXOPTS_EXTRA="-q -t publish" make -C doc ${DOC_TARGET}
-
-    - name: compress-docs
-      run: |
-        tar cfJ html-output.tar.xz --directory=doc/_build html
-
-    - name: upload-build
-      uses: actions/upload-artifact@v3
-      with:
-        name: html-output
-        path: html-output.tar.xz
-
-    - name: process-pr
-      if: github.event_name == 'pull_request'
-      run: |
-        REPO_NAME="${{ github.event.repository.name }}"
-        PR_NUM="${{ github.event.pull_request.number }}"
-        DOC_URL="https://builds.zephyrproject.io/${REPO_NAME}/pr/${PR_NUM}/docs/"
-
-        echo "${PR_NUM}" > pr_num
-        echo "Documentation will be available shortly at: ${DOC_URL}" >> $GITHUB_STEP_SUMMARY
-
-    - name: upload-pr-number
-      uses: actions/upload-artifact@v3
-      if: github.event_name == 'pull_request'
-      with:
-        name: pr_num
-        path: pr_num
-
-  doc-build-pdf:
-    name: "Documentation Build (PDF)"
-    if: github.event_name != 'pull_request'
-    runs-on: zephyr-runner-linux-x64-4xlarge
-    container: texlive/texlive:latest
-    timeout-minutes: 60
-    concurrency:
-      group: doc-build-pdf-${{ github.ref }}
-      cancel-in-progress: true
-
-    steps:
-    - name: checkout
-      uses: actions/checkout@v3
-
-    - name: install-pkgs
-      run: |
-        apt-get update
-        apt-get install -y python3-pip python3-venv ninja-build doxygen graphviz librsvg2-bin
-
-    - name: cache-pip
-      uses: actions/cache@v3
-      with:
-        path: ~/.cache/pip
-        key: pip-${{ hashFiles('doc/requirements.txt') }}
-
-    - name: setup-venv
-      run: |
-        python3 -m venv .venv
-        . .venv/bin/activate
-        echo PATH=$PATH >> $GITHUB_ENV
-
-    - name: install-pip
-      run: |
-        pip3 install -U setuptools wheel pip
-        pip3 install -r doc/requirements.txt
-        pip3 install west==${WEST_VERSION}
-        pip3 install cmake==${CMAKE_VERSION}
-
-    - name: west setup
-      run: |
-        west init -l .
-
-    - name: build-docs
-      shell: bash
-      continue-on-error: true
-      run: |
-        if [[ "$GITHUB_REF" =~ "refs/tags/v" ]]; then
-          DOC_TAG="release"
-        else
-          DOC_TAG="development"
-        fi
-
-        DOC_TAG=${DOC_TAG} SPHINXOPTS="-q -j auto" LATEXMKOPTS="-quiet -halt-on-error" make -C doc pdf
-
-    - name: upload-build
-      if: always()
-      uses: actions/upload-artifact@v3
-      with:
-        name: pdf-output
-        if-no-files-found: ignore
-        path: |
-          doc/_build/latex/zephyr.pdf
-          doc/_build/latex/zephyr.log

.github/workflows/doc-publish-pr.yml

@@ -1,63 +0,0 @@
-# Copyright (c) 2020 Linaro Limited.
-# Copyright (c) 2021 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-name: Documentation Publish (Pull Request)
-
-on:
-  workflow_run:
-    workflows: ["Documentation Build"]
-    types:
-    - completed
-
-jobs:
-  doc-publish:
-    name: Publish Documentation
-    runs-on: ubuntu-22.04
-    if: |
-      github.event.workflow_run.event == 'pull_request' &&
-      github.event.workflow_run.conclusion == 'success' &&
-      github.repository == 'zephyrproject-rtos/zephyr'
-
-    steps:
-    - name: Download artifacts
-      uses: dawidd6/action-download-artifact@v2
-      with:
-        workflow: doc-build.yml
-        run_id: ${{ github.event.workflow_run.id }}
-
-    - name: Load PR number
-      run: |
-        echo "PR_NUM=$(<pr_num/pr_num)" >> $GITHUB_ENV
-
-    - name: Check PR number
-      id: check-pr
-      uses: carpentries/actions/check-valid-pr@v0.14.0
-      with:
-        pr: ${{ env.PR_NUM }}
-        sha: ${{ github.event.workflow_run.head_sha }}
-
-    - name: Validate PR number
-      if: steps.check-pr.outputs.VALID != 'true'
-      run: |
-        echo "ABORT: PR number validation failed!"
-        exit 1
-
-    - name: Uncompress HTML docs
-      run: |
-        tar xf html-output/html-output.tar.xz -C html-output
-
-    - name: Configure AWS Credentials
-      uses: aws-actions/configure-aws-credentials@v2
-      with:
-        aws-access-key-id: ${{ vars.AWS_BUILDS_ZEPHYR_PR_ACCESS_KEY_ID }}
-        aws-secret-access-key: ${{ secrets.AWS_BUILDS_ZEPHYR_PR_SECRET_ACCESS_KEY }}
-        aws-region: us-east-1
-
-    - name: Upload to AWS S3
-      env:
-        HEAD_BRANCH: ${{ github.event.workflow_run.head_branch }}
-      run: |
-        aws s3 sync --quiet html-output/html \
-          s3://builds.zephyrproject.org/${{ github.event.repository.name }}/pr/${PR_NUM}/docs \
-          --delete

.github/workflows/doc-publish.yml

@@ -1,55 +0,0 @@
-# Copyright (c) 2020 Linaro Limited.
-# Copyright (c) 2021 Nordic Semiconductor ASA
-# SPDX-License-Identifier: Apache-2.0
-
-name: Documentation Publish
-
-on:
-  workflow_run:
-    workflows: ["Documentation Build"]
-    branches:
-    - main
-    - v*
-    types:
-    - completed
-
-jobs:
-  doc-publish:
-    name: Publish Documentation
-    runs-on: ubuntu-22.04
-    if: |
-      github.event.workflow_run.event != 'pull_request' &&
-      github.event.workflow_run.conclusion == 'success' &&
-      github.repository == 'zephyrproject-rtos/zephyr'
-
-    steps:
-    - name: Download artifacts
-      uses: dawidd6/action-download-artifact@v2
-      with:
-        workflow: doc-build.yml
-        run_id: ${{ github.event.workflow_run.id }}
-
-    - name: Uncompress HTML docs
-      run: |
-        tar xf html-output/html-output.tar.xz -C html-output
-
-    - name: Configure AWS Credentials
-      uses: aws-actions/configure-aws-credentials@v2
-      with:
-        aws-access-key-id: ${{ vars.AWS_DOCS_ACCESS_KEY_ID }}
-        aws-secret-access-key: ${{ secrets.AWS_DOCS_SECRET_ACCESS_KEY }}
-        aws-region: us-east-1
-
-    - name: Upload to AWS S3
-      env:
-        HEAD_BRANCH: ${{ github.event.workflow_run.head_branch }}
-      run: |
-        if [ "${HEAD_BRANCH:0:1}" == "v" ]; then
-          VERSION=${HEAD_BRANCH:1}
-        else
-          VERSION="latest"
-        fi
-
-        aws s3 sync --quiet html-output/html s3://docs.zephyrproject.org/${VERSION} --delete
-        aws s3 sync --quiet html-output/html/doxygen/html s3://docs.zephyrproject.org/apidoc/${VERSION} --delete
-        aws s3 cp --quiet pdf-output/zephyr.pdf s3://docs.zephyrproject.org/${VERSION}/zephyr.pdf

.github/workflows/errno.yml

@@ -1,32 +0,0 @@
-name: Error numbers
-on:
-  pull_request:
-    paths:
-      - '.github/workflows/errno.yml'
-      - 'lib/libc/minimal/include/errno.h'
-      - 'scripts/ci/errno.py'
-
-jobs:
-  check-errno:
-    runs-on: ubuntu-22.04
-    container:
-      image: ghcr.io/zephyrproject-rtos/ci:v0.26.4
-    env:
-      ZEPHYR_SDK_INSTALL_DIR: /opt/toolchains/zephyr-sdk-0.16.1
-
-    steps:
-      - name: Apply container owner mismatch workaround
-        run: |
-          # FIXME: The owner UID of the GITHUB_WORKSPACE directory may not
-          #        match the container user UID because of the way GitHub
-          #        Actions runner is implemented. Remove this workaround when
-          #        GitHub comes up with a fundamental fix for this problem.
-          git config --global --add safe.directory ${GITHUB_WORKSPACE}
-
-      - name: checkout
-        uses: actions/checkout@v3
-
-      - name: Run errno.py
-        run: |
-          export ZEPHYR_BASE=${PWD}
-          ./scripts/ci/errno.py

.github/workflows/footprint-tracking.yml

@@ -1,85 +0,0 @@
-name: Footprint Tracking
-
-# Run every 12 hours and on tags
-on:
-  schedule:
-    - cron: '50 1/12 * * *'
-  push:
-    paths:
-      - 'VERSION'
-      - '.github/workflows/footprint-tracking.yml'
-    branches:
-      - main
-      - v*-branch
-    tags:
-      # only publish v* tags, do not care about zephyr-v* which point to the
-      # same commit
-      - 'v*'
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.head_ref || github.ref }}
-  cancel-in-progress: true
-
-jobs:
-  footprint-tracking:
-    runs-on: ubuntu-22.04
-    if: github.repository_owner == 'zephyrproject-rtos'
-    container:
-      image: ghcr.io/zephyrproject-rtos/ci:v0.26.4
-      options: '--entrypoint /bin/bash'
-    strategy:
-      fail-fast: false
-    env:
-      ZEPHYR_SDK_INSTALL_DIR: /opt/toolchains/zephyr-sdk-0.16.1
-      ZEPHYR_TOOLCHAIN_VARIANT: zephyr
-    steps:
-      - name: Apply container owner mismatch workaround
-        run: |
-          # FIXME: The owner UID of the GITHUB_WORKSPACE directory may not
-          #        match the container user UID because of the way GitHub
-          #        Actions runner is implemented. Remove this workaround when
-          #        GitHub comes up with a fundamental fix for this problem.
-          git config --global --add safe.directory ${GITHUB_WORKSPACE}
-
-      - name: Update PATH for west
-        run: |
-          echo "$HOME/.local/bin" >> $GITHUB_PATH
-
-      - name: Install packages
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y python3-venv
-          sudo pip3 install -U setuptools wheel pip gitpython
-
-      - name: checkout
-        uses: actions/checkout@v3
-        with:
-          ref: ${{ github.event.pull_request.head.sha }}
-          fetch-depth: 0
-
-      - name: west setup
-        run: |
-          west init -l . || true
-          west config --global update.narrow true
-          west update 2>&1 1> west.update.log || west update 2>&1 1> west.update2.log
-
-      - name: Configure AWS Credentials
-        uses: aws-actions/configure-aws-credentials@v2
-        with:
-          aws-access-key-id: ${{ vars.AWS_TESTING_ACCESS_KEY_ID }}
-          aws-secret-access-key: ${{ secrets.AWS_TESTING_SECRET_ACCESS_KEY }}
-          aws-region: us-east-1
-
-      - name: Record Footprint
-        env:
-          BASE_REF: ${{ github.base_ref }}
-        run: |
-          export ZEPHYR_BASE=${PWD}
-          ./scripts/footprint/track.py  -p scripts/footprint/plan.txt
-
-      - name: Upload footprint data
-        run: |
-          python3 -m venv .venv
-          . .venv/bin/activate
-          pip3 install awscli
-          aws s3 sync  --quiet footprint_data/ s3://testing.zephyrproject.org/footprint_data/

.github/workflows/footprint.yml

@@ -1,71 +0,0 @@
-name: Footprint Delta
-
-on: pull_request
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.head_ref || github.ref }}
-  cancel-in-progress: true
-
-jobs:
-  footprint-delta:
-    runs-on: ubuntu-22.04
-    if: github.repository == 'zephyrproject-rtos/zephyr'
-    container:
-      image: ghcr.io/zephyrproject-rtos/ci:v0.26.4
-      options: '--entrypoint /bin/bash'
-    strategy:
-      fail-fast: false
-    env:
-      ZEPHYR_SDK_INSTALL_DIR: /opt/toolchains/zephyr-sdk-0.16.1
-      ZEPHYR_TOOLCHAIN_VARIANT: zephyr
-    steps:
-      - name: Apply container owner mismatch workaround
-        run: |
-          # FIXME: The owner UID of the GITHUB_WORKSPACE directory may not
-          #        match the container user UID because of the way GitHub
-          #        Actions runner is implemented. Remove this workaround when
-          #        GitHub comes up with a fundamental fix for this problem.
-          git config --global --add safe.directory ${GITHUB_WORKSPACE}
-
-      - name: Update PATH for west
-        run: |
-          echo "$HOME/.local/bin" >> $GITHUB_PATH
-
-      - name: checkout
-        uses: actions/checkout@v3
-        with:
-          ref: ${{ github.event.pull_request.head.sha }}
-          fetch-depth: 0
-
-      - name: west setup
-        run: |
-          west init -l . || true
-          west config --global update.narrow true
-          west update 2>&1 1> west.update.log || west update 2>&1 1> west.update.log
-
-      - name: Detect Changes in Footprint
-        env:
-          BASE_REF: ${{ github.base_ref }}
-        run: |
-          export ZEPHYR_BASE=${PWD}
-          git config --global user.email "actions@zephyrproject.org"
-          git config --global user.name "Github Actions"
-          git remote -v
-          git rebase origin/${BASE_REF}
-          git checkout -b this_pr
-          west update
-          west build -b frdm_k64f  tests/benchmarks/footprints -t ram_report
-          cp build/ram.json ram2.json
-          west build -b frdm_k64f  tests/benchmarks/footprints -t rom_report
-          cp build/rom.json rom2.json
-
-          git checkout origin/${BASE_REF}
-          west update
-          west build -p always -b frdm_k64f  tests/benchmarks/footprints -t ram_report
-          west build -b frdm_k64f  tests/benchmarks/footprints -t rom_report
-          cp build/ram.json ram1.json
-          cp build/rom.json rom1.json
-
-          git checkout this_pr
-          ./scripts/footprint/fpdiff.py ram1.json ram2.json
-          ./scripts/footprint/fpdiff.py rom1.json rom2.json

.github/workflows/greet_first_time_contributor.yml

@@ -1,52 +0,0 @@
-name: Greet first time contributor
-
-on:
-  issues:
-    types: [opened]
-  pull_request_target:
-    types: [opened, closed]
-
-jobs:
-  check_for_first_interaction:
-    runs-on: ubuntu-22.04
-    if: github.repository == 'zephyrproject-rtos/zephyr'
-
-    steps:
-      - uses: actions/checkout@v3
-      - uses: zephyrproject-rtos/action-first-interaction@v1.1.1-zephyr-4
-        with:
-          repo-token: ${{ secrets.GITHUB_TOKEN }}
-
-          issue-message: >
-            Hi @${{github.event.issue.user.login}}! We appreciate you submitting your first issue
-            for our open-source project. 🌟
-
-
-            Even though I'm a bot, I can assure you that the whole community is genuinely grateful
-            for your time and effort. 🤖💙
-
-          pr-opened-message: >
-            Hello @${{ github.event.pull_request.user.login }}, and thank you very much for your
-            first pull request to the Zephyr project!
-
-
-            A project maintainer just triggered our CI pipeline to run it against your PR and
-            ensure it's compliant and doesn't cause any issues. You might want to take this
-            opportunity to review the project's [Contributor
-            Expectations](https://docs.zephyrproject.org/latest/contribute/contributor_expectations.html)
-            and make any updates to your pull request if necessary. 😊
-
-          pr-merged-message: >
-            Hi @${{ github.event.pull_request.user.login }}!
-
-            Congratulations on getting your very first Zephyr pull request merged 🎉🥳. This is a
-            fantastic achievement, and we're thrilled to have you as part of our community!
-
-
-            To celebrate this milestone and showcase your contribution, we'd love to award you the
-            Zephyr Technical Contributor badge. If you're interested, please claim your badge by
-            filling out this form: [Claim Your Zephyr Badge](https://forms.gle/oCw9iAPLhUsHTapc8).
-
-
-            Thank you for your valuable input, and we look forward to seeing more of your
-            contributions in the future! 🪁

.github/workflows/issue_count.yml

@@ -1,54 +0,0 @@
-name: Issue Tracker
-
-on:
-  schedule:
-  - cron: '*/10 * * * *'
-
-env:
-  OUTPUT_FILE_NAME: IssuesReport.md
-  COMMITTER_EMAIL: actions@github.com
-  COMMITTER_NAME: github-actions
-  COMMITTER_USERNAME: github-actions
-
-
-jobs:
-  track-issues:
-    name: "Collect Issue Stats"
-    runs-on: ubuntu-22.04
-    if: github.repository == 'zephyrproject-rtos/zephyr'
-
-    steps:
-    - name: Download configuration file
-      run: |
-        wget -q https://raw.githubusercontent.com/$GITHUB_REPOSITORY/main/.github/workflows/issues-report-config.json
-
-    - name: install-packages
-      run: |
-        sudo apt-get update
-        sudo apt-get install discount
-
-    - uses: brcrista/summarize-issues@v3
-      with:
-        title: 'Issues Report for ${{ github.repository }}'
-        configPath: 'issues-report-config.json'
-        outputPath: ${{ env.OUTPUT_FILE_NAME }}
-        token: ${{ secrets.GITHUB_TOKEN }}
-
-    - name: upload-stats
-      uses: actions/upload-artifact@v3
-      continue-on-error: true
-      with:
-        name: ${{ env.OUTPUT_FILE_NAME }}
-        path: ${{ env.OUTPUT_FILE_NAME }}
-
-    - name: Configure AWS Credentials
-      uses: aws-actions/configure-aws-credentials@v2
-      with:
-        aws-access-key-id: ${{ vars.AWS_TESTING_ACCESS_KEY_ID }}
-        aws-secret-access-key: ${{ secrets.AWS_TESTING_SECRET_ACCESS_KEY }}
-        aws-region: us-east-1
-
-    - name: Post Results
-      run: |
-        mkd2html IssuesReport.md IssuesReport.html
-        aws s3 cp --quiet IssuesReport.html s3://testing.zephyrproject.org/issues/$GITHUB_REPOSITORY/index.html

.github/workflows/issues-report-config.json

@@ -1,37 +0,0 @@
-[
-  {
-    "section": "High Priority Bugs",
-    "labels": ["bug", "priority: high"],
-    "threshold": 0
-  },
-  {
-    "section": "Medium Priority Bugs",
-    "labels": ["bug", "priority: medium"],
-    "threshold": 20
-  },
-  {
-    "section": "Low Priority Bugs",
-    "labels": ["bug", "priority: low"],
-    "threshold": 100
-  },
-  {
-    "section": "Enhancements",
-    "labels": ["Enhancement"],
-    "threshold": 500
-  },
-  {
-    "section": "Features",
-    "labels": ["Feature"],
-    "threshold": 100
-  },
-  {
-    "section": "Questions",
-    "labels": ["question"],
-    "threshold": 100
-  },
-  {
-    "section": "Static Analysis",
-    "labels": ["Coverity"],
-    "threshold": 100
-  }
-]

.github/workflows/license_check.yml

@@ -1,32 +0,0 @@
-name: Scancode
-
-on: [pull_request]
-
-jobs:
-  scancode_job:
-    runs-on: ubuntu-22.04
-    name: Scan code for licenses
-    steps:
-    - name: Checkout the code
-      uses: actions/checkout@v3
-    - name: Scan the code
-      id: scancode
-      uses: zephyrproject-rtos/action_scancode@v4
-      with:
-        directory-to-scan: 'scan/'
-    - name: Artifact Upload
-      uses: actions/upload-artifact@v3
-      with:
-        name: scancode
-        path: ./artifacts
-
-    - name: Verify
-      run: |
-        if [ -s ./artifacts/report.txt ]; then
-          report=$(cat ./artifacts/report.txt)
-          report="${report//'%'/'%25'}"
-          report="${report//$'\n'/'%0A'}"
-          report="${report//$'\r'/'%0D'}"
-          echo "::error file=./artifacts/report.txt::$report"
-          exit 1
-        fi

.github/workflows/manifest.yml

@@ -1,38 +0,0 @@
-name: Manifest
-on:
-  pull_request_target:
-
-jobs:
-  contribs:
-    runs-on: ubuntu-22.04
-    name: Manifest
-    steps:
-      - name: Checkout the code
-        uses: actions/checkout@v3
-        with:
-          path: zephyrproject/zephyr
-          ref: ${{ github.event.pull_request.head.sha }}
-          fetch-depth: 0
-          persist-credentials: false
-
-      - name: west setup
-        env:
-          BASE_REF: ${{ github.base_ref }}
-        working-directory: zephyrproject/zephyr
-        run: |
-          pip3 install west
-          git config --global user.email "you@example.com"
-          git config --global user.name "Your Name"
-          west init -l . || true
-
-      - name: Manifest
-        uses: zephyrproject-rtos/action-manifest@f223dce288b0d8f30bfd57eb2b14b18c230a7d8b
-        with:
-          github-token: ${{ secrets.ZB_GITHUB_TOKEN }}
-          manifest-path: 'west.yml'
-          checkout-path: 'zephyrproject/zephyr'
-          use-tree-checkout: 'true'
-          label-prefix: 'manifest-'
-          verbosity-level: '1'
-          labels: 'manifest'
-          dnm-labels: 'DNM'

.github/workflows/release.yml

@@ -1,60 +0,0 @@
-name: Create a Release
-
-on:
-  push:
-    tags:
-      - 'v*'
-      - '!v*rc*'
-
-jobs:
-  release:
-    runs-on: ubuntu-22.04
-    steps:
-      - uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
-
-      - name: Get the version
-        id: get_version
-        run: |
-          echo "VERSION=${GITHUB_REF#refs/tags/}" >> $GITHUB_OUTPUT
-          echo "TRIMMED_VERSION=${GITHUB_REF#refs/tags/v}" >> $GITHUB_OUTPUT
-
-      - name: REUSE Compliance Check
-        uses: fsfe/reuse-action@v1
-        with:
-          args: spdx -o zephyr-${{ steps.get_version.outputs.VERSION }}.spdx
-
-      - name: upload-results
-        uses: actions/upload-artifact@v3
-        continue-on-error: true
-        with:
-          name: zephyr-${{ steps.get_version.outputs.VERSION }}.spdx
-          path: zephyr-${{ steps.get_version.outputs.VERSION }}.spdx
-
-      - name: Create empty release notes body
-        run: |
-          echo "TODO: add release overview and notes link" > release-notes.txt
-
-      - name: Create Release
-        id: create_release
-        uses: actions/create-release@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          tag_name: ${{ github.ref }}
-          release_name: Zephyr ${{ steps.get_version.outputs.TRIMMED_VERSION }}
-          body_path: release-notes.txt
-          draft: true
-          prerelease: true
-
-      - name: Upload Release Assets
-        id: upload-release-asset
-        uses: actions/upload-release-asset@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: zephyr-${{ steps.get_version.outputs.VERSION }}.spdx
-          asset_name: zephyr-${{ steps.get_version.outputs.VERSION }}.spdx
-          asset_content_type: text/plain

.github/workflows/scripts_tests.yml

@@ -1,71 +0,0 @@
-# Copyright 2023 Google LLC
-# SPDX-License-Identifier: Apache-2.0
-
-name: Scripts tests
-
-on:
-  push:
-    branches:
-      - main
-      - v*-branch
-    paths:
-      - 'scripts/build/**'
-      - '.github/workflows/scripts_tests.yml'
-  pull_request:
-    branches:
-      - main
-      - v*-branch
-    paths:
-      - 'scripts/build/**'
-      - '.github/workflows/scripts_tests.yml'
-
-jobs:
-  scripts-tests:
-    name: Scripts tests
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        python-version: [3.8, 3.9, '3.10']
-        os: [ubuntu-20.04]
-    steps:
-      - name: checkout
-        uses: actions/checkout@v3
-        with:
-          ref: ${{ github.event.pull_request.head.sha }}
-          fetch-depth: 0
-
-      - name: Rebase
-        continue-on-error: true
-        env:
-          BASE_REF: ${{ github.base_ref }}
-          PR_HEAD: ${{ github.event.pull_request.head.sha }}
-        run: |
-          git config --global user.email "actions@zephyrproject.org"
-          git config --global user.name "Github Actions"
-          git rebase origin/${BASE_REF}
-          git log --graph --oneline HEAD...${PR_HEAD}
-
-      - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v4
-        with:
-          python-version: ${{ matrix.python-version }}
-
-      - name: cache-pip-linux
-        if: startsWith(runner.os, 'Linux')
-        uses: actions/cache@v3
-        with:
-          path: ~/.cache/pip
-          key: ${{ runner.os }}-pip-${{ matrix.python-version }}
-          restore-keys: |
-            ${{ runner.os }}-pip-${{ matrix.python-version }}
-
-      - name: install-packages
-        run: |
-          pip3 install -r scripts/requirements-base.txt -r scripts/requirements-build-test.txt
-
-      - name: Run pytest
-        env:
-          ZEPHYR_BASE: ./
-        run: |
-          echo "Run script tests"
-          pytest ./scripts/build

.github/workflows/stale-workflow-queue-cleanup.yml

@@ -1,28 +0,0 @@
-name: Stale Workflow Queue Cleanup
-
-on:
-  workflow_dispatch:
-    branches: [main]
-  schedule:
-  # everyday at 15:00
-  - cron: '0 15 * * *'
-
-concurrency:
-  group: stale-workflow-queue-cleanup
-  cancel-in-progress: true
-
-jobs:
-  cleanup:
-    name: Cleanup
-    runs-on: ubuntu-22.04
-
-    steps:
-    - name: Delete stale queued workflow runs
-      uses: MajorScruffy/delete-old-workflow-runs@v0.3.0
-      with:
-        repository: ${{ github.repository }}
-        # Remove any workflow runs in "queued" state for more than 1 day
-        older-than-seconds: 86400
-        status: queued
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/stale_issue.yml

@@ -1,28 +0,0 @@
-name: "Close stale pull requests/issues"
-on:
-  schedule:
-  - cron: "16 00 * * *"
-
-jobs:
-  stale:
-    name: Find Stale issues and PRs
-    runs-on: ubuntu-22.04
-    if: github.repository == 'zephyrproject-rtos/zephyr'
-    steps:
-    - uses: actions/stale@v8
-      with:
-        stale-pr-message: 'This pull request has been marked as stale because it has been open (more
-          than) 60 days with no activity. Remove the stale label or add a comment saying that you
-          would like to have the label removed otherwise this pull request will automatically be
-          closed in 14 days. Note, that you can always re-open a closed pull request at any time.'
-        stale-issue-message: 'This issue has been marked as stale because it has been open (more
-          than) 60 days with no activity. Remove the stale label or add a comment saying that you
-          would like to have the label removed otherwise this issue will automatically be closed in
-          14 days. Note, that you can always re-open a closed issue at any time.'
-        days-before-stale: 60
-        days-before-close: 14
-        stale-issue-label: 'Stale'
-        stale-pr-label: 'Stale'
-        exempt-pr-labels: 'Blocked,In progress'
-        exempt-issue-labels: 'In progress,Enhancement,Feature,Feature Request,RFC,Meta,Process'
-        operations-per-run: 400

.github/workflows/twister.yaml

@@ -1,331 +0,0 @@
-name: Run tests with twister
-
-on:
-  push:
-    branches:
-      - main
-      - v*-branch
-  pull_request_target:
-    branches:
-      - main
-      - v*-branch
-  schedule:
-    # Run at 03:00 UTC on every Sunday
-    - cron: '0 3 * * 0'
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.head_ref || github.ref }}
-  cancel-in-progress: true
-
-jobs:
-  twister-build-prep:
-    if: github.repository_owner == 'zephyrproject-rtos'
-    runs-on: zephyr-runner-linux-x64-4xlarge
-    container:
-      image: ghcr.io/zephyrproject-rtos/ci:v0.26.4
-      options: '--entrypoint /bin/bash'
-      volumes:
-        - /repo-cache/zephyrproject:/github/cache/zephyrproject
-    outputs:
-      subset: ${{ steps.output-services.outputs.subset }}
-      size: ${{ steps.output-services.outputs.size }}
-      fullrun: ${{ steps.output-services.outputs.fullrun }}
-    env:
-      MATRIX_SIZE: 10
-      PUSH_MATRIX_SIZE: 15
-      DAILY_MATRIX_SIZE: 80
-      ZEPHYR_SDK_INSTALL_DIR: /opt/toolchains/zephyr-sdk-0.16.1
-      BSIM_OUT_PATH: /opt/bsim/
-      BSIM_COMPONENTS_PATH: /opt/bsim/components
-      TESTS_PER_BUILDER: 700
-      COMMIT_RANGE: ${{ github.event.pull_request.base.sha }}..${{ github.event.pull_request.head.sha }}
-      BASE_REF: ${{ github.base_ref }}
-    steps:
-      - name: Apply container owner mismatch workaround
-        run: |
-          # FIXME: The owner UID of the GITHUB_WORKSPACE directory may not
-          #        match the container user UID because of the way GitHub
-          #        Actions runner is implemented. Remove this workaround when
-          #        GitHub comes up with a fundamental fix for this problem.
-          git config --global --add safe.directory ${GITHUB_WORKSPACE}
-
-      - name: Clone cached Zephyr repository
-        if: github.event_name == 'pull_request_target'
-        continue-on-error: true
-        run: |
-          git clone --shared /github/cache/zephyrproject/zephyr .
-          git remote set-url origin ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}
-
-      - name: Checkout
-        if: github.event_name == 'pull_request_target'
-        uses: actions/checkout@v3
-        with:
-          ref: ${{ github.event.pull_request.head.sha }}
-          fetch-depth: 0
-          persist-credentials: false
-
-      - name: Environment Setup
-        if: github.event_name == 'pull_request_target'
-        run: |
-          git config --global user.email "bot@zephyrproject.org"
-          git config --global user.name "Zephyr Bot"
-          rm -fr ".git/rebase-apply"
-          git rebase origin/${BASE_REF}
-          git log  --pretty=oneline | head -n 10
-          west init -l . || true
-          west config manifest.group-filter -- +ci
-          west config --global update.narrow true
-          west update --path-cache /github/cache/zephyrproject 2>&1 1> west.update.log || west update --path-cache /github/cache/zephyrproject 2>&1 1> west.update.log || ( rm -rf ../modules ../bootloader ../tools && west update --path-cache /github/cache/zephyrproject)
-          west forall -c 'git reset --hard HEAD'
-
-      - name: Generate Test Plan with Twister
-        if: github.event_name == 'pull_request_target'
-        id: test-plan
-        run: |
-          export ZEPHYR_BASE=${PWD}
-          export ZEPHYR_TOOLCHAIN_VARIANT=zephyr
-          python3 ./scripts/ci/test_plan.py -c origin/${BASE_REF}.. --pull-request -t $TESTS_PER_BUILDER
-          if [ -s .testplan ]; then
-            cat .testplan >> $GITHUB_ENV
-          else
-            echo "TWISTER_NODES=${MATRIX_SIZE}" >> $GITHUB_ENV
-          fi
-          rm -f testplan.json .testplan
-
-      - name: Determine matrix size
-        id: output-services
-        run: |
-          if [ "${{github.event_name}}" = "pull_request_target" ]; then
-            if [ -n "${TWISTER_NODES}" ]; then
-              subset="[$(seq -s',' 1 ${TWISTER_NODES})]"
-            else
-              subset="[$(seq -s',' 1 ${MATRIX_SIZE})]"
-            fi
-            size=${TWISTER_NODES}
-          elif [ "${{github.event_name}}" = "push" ]; then
-            subset="[$(seq -s',' 1 ${PUSH_MATRIX_SIZE})]"
-            size=${MATRIX_SIZE}
-          elif [ "${{github.event_name}}" = "schedule" -a "${{github.repository}}" = "zephyrproject-rtos/zephyr" ]; then
-            subset="[$(seq -s',' 1 ${DAILY_MATRIX_SIZE})]"
-            size=${DAILY_MATRIX_SIZE}
-          else
-            size=0
-          fi
-          echo "subset=${subset}" >> $GITHUB_OUTPUT
-          echo "size=${size}" >> $GITHUB_OUTPUT
-          echo "fullrun=${TWISTER_FULL}" >> $GITHUB_OUTPUT
-
-  twister-build:
-    runs-on: zephyr-runner-linux-x64-4xlarge
-    needs: twister-build-prep
-    if: needs.twister-build-prep.outputs.size != 0
-    container:
-      image: ghcr.io/zephyrproject-rtos/ci:v0.26.4
-      options: '--entrypoint /bin/bash'
-      volumes:
-        - /repo-cache/zephyrproject:/github/cache/zephyrproject
-    strategy:
-      fail-fast: false
-      matrix:
-        subset: ${{fromJSON(needs.twister-build-prep.outputs.subset)}}
-    env:
-      ZEPHYR_SDK_INSTALL_DIR: /opt/toolchains/zephyr-sdk-0.16.1
-      BSIM_OUT_PATH: /opt/bsim/
-      BSIM_COMPONENTS_PATH: /opt/bsim/components
-      TWISTER_COMMON: ' --force-color --inline-logs -v -N -M --retry-failed 3 '
-      DAILY_OPTIONS: ' -M --build-only --all --show-footprint'
-      PR_OPTIONS: ' --clobber-output --integration'
-      PUSH_OPTIONS: ' --clobber-output -M --show-footprint'
-      COMMIT_RANGE: ${{ github.event.pull_request.base.sha }}..${{ github.event.pull_request.head.sha }}
-      BASE_REF: ${{ github.base_ref }}
-    steps:
-      - name: Apply container owner mismatch workaround
-        run: |
-          # FIXME: The owner UID of the GITHUB_WORKSPACE directory may not
-          #        match the container user UID because of the way GitHub
-          #        Actions runner is implemented. Remove this workaround when
-          #        GitHub comes up with a fundamental fix for this problem.
-          git config --global --add safe.directory ${GITHUB_WORKSPACE}
-
-      - name: Clone cached Zephyr repository
-        continue-on-error: true
-        run: |
-          git clone --shared /github/cache/zephyrproject/zephyr .
-          git remote set-url origin ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}
-
-      - name: Checkout
-        uses: actions/checkout@v3
-        with:
-          ref: ${{ github.event.pull_request.head.sha }}
-          fetch-depth: 0
-          persist-credentials: false
-
-      - name: Environment Setup
-        run: |
-          if [ "${{github.event_name}}" = "pull_request_target" ]; then
-            git config --global user.email "bot@zephyrproject.org"
-            git config --global user.name "Zephyr Builder"
-            rm -fr ".git/rebase-apply"
-            git rebase origin/${BASE_REF}
-            git log  --pretty=oneline | head -n 10
-          fi
-          echo "$HOME/.local/bin" >> $GITHUB_PATH
-
-          west init -l . || true
-          west config --global update.narrow true
-          west update --path-cache /github/cache/zephyrproject 2>&1 1> west.update.log || west update --path-cache /github/cache/zephyrproject 2>&1 1> west.update.log || ( rm -rf ../modules ../bootloader ../tools && west update --path-cache /github/cache/zephyrproject)
-          west forall -c 'git reset --hard HEAD'
-
-      - name: Check Environment
-        run: |
-          cmake --version
-          gcc --version
-          ls -la
-          echo "github.ref: ${{ github.ref }}"
-          echo "github.base_ref: ${{ github.base_ref }}"
-          echo "github.ref_name: ${{ github.ref_name }}"
-
-      - name: Prepare ccache timestamp/data
-        id: ccache_cache_timestamp
-        shell: cmake -P {0}
-        run: |
-          string(TIMESTAMP current_date "%Y-%m-%d-%H;%M;%S" UTC)
-          string(REPLACE "/" "_" repo ${{github.repository}})
-          string(REPLACE "-" "_" repo2 ${repo})
-          file(APPEND $ENV{GITHUB_OUTPUT} "repo=${repo2}\n")
-
-      - name: use cache
-        id: cache-ccache
-        uses: zephyrproject-rtos/action-s3-cache@v1.2.0
-        continue-on-error: true
-        with:
-          key: ${{ steps.ccache_cache_timestamp.outputs.repo }}-${{ github.ref_name }}-${{github.event_name}}-${{ matrix.subset }}-ccache
-          path: /github/home/.cache/ccache
-          aws-s3-bucket: ccache.zephyrproject.org
-          aws-access-key-id: ${{ vars.AWS_CCACHE_ACCESS_KEY_ID }}
-          aws-secret-access-key: ${{ secrets.AWS_CCACHE_SECRET_ACCESS_KEY }}
-          aws-region: us-east-2
-
-      - name: ccache stats initial
-        run: |
-          mkdir -p /github/home/.cache
-          test -d github/home/.cache/ccache && rm -rf /github/home/.cache/ccache && mv github/home/.cache/ccache /github/home/.cache/ccache
-          ccache -M 10G -s
-
-      - if: github.event_name == 'push'
-        name: Run Tests with Twister (Push)
-        run: |
-          export ZEPHYR_BASE=${PWD}
-          export ZEPHYR_TOOLCHAIN_VARIANT=zephyr
-          ./scripts/twister --subset ${{matrix.subset}}/${{ strategy.job-total }} ${TWISTER_COMMON} ${PUSH_OPTIONS}
-          if [ "${{matrix.subset}}" = "1" ]; then
-            ./scripts/zephyr_module.py --twister-out module_tests.args
-            if [ -s module_tests.args ]; then
-              ./scripts/twister +module_tests.args --outdir module_tests ${TWISTER_COMMON} ${PUSH_OPTIONS}
-            fi
-          fi
-
-      - if: github.event_name == 'pull_request_target'
-        name: Run Tests with Twister (Pull Request)
-        run: |
-          rm -f testplan.json
-          export ZEPHYR_BASE=${PWD}
-          export ZEPHYR_TOOLCHAIN_VARIANT=zephyr
-          python3 ./scripts/ci/test_plan.py -c origin/${BASE_REF}.. --pull-request
-          ./scripts/twister --subset ${{matrix.subset}}/${{ strategy.job-total }} --load-tests testplan.json ${TWISTER_COMMON} ${PR_OPTIONS}
-          if [ "${{matrix.subset}}" = "1" -a ${{needs.twister-build-prep.outputs.fullrun}} = 'True' ]; then
-            ./scripts/zephyr_module.py --twister-out module_tests.args
-            if [ -s module_tests.args ]; then
-              ./scripts/twister +module_tests.args --outdir module_tests ${TWISTER_COMMON} ${PR_OPTIONS}
-            fi
-          fi
-
-      - if: github.event_name == 'schedule'
-        name: Run Tests with Twister (Daily)
-        run: |
-          export ZEPHYR_BASE=${PWD}
-          export ZEPHYR_TOOLCHAIN_VARIANT=zephyr
-          ./scripts/twister --subset ${{matrix.subset}}/${{ strategy.job-total }} ${TWISTER_COMMON} ${DAILY_OPTIONS}
-          if [ "${{matrix.subset}}" = "1" ]; then
-            ./scripts/zephyr_module.py --twister-out module_tests.args
-            if [ -s module_tests.args ]; then
-              ./scripts/twister +module_tests.args --outdir module_tests ${TWISTER_COMMON} ${DAILY_OPTIONS}
-            fi
-          fi
-
-      - name: ccache stats post
-        run: |
-          ccache -p
-          ccache -s
-
-      - name: Upload Unit Test Results
-        if: always()
-        uses: actions/upload-artifact@v3
-        with:
-          name: Unit Test Results (Subset ${{ matrix.subset }})
-          if-no-files-found: ignore
-          path: |
-            twister-out/twister.xml
-            twister-out/twister.json
-            module_tests/twister.xml
-            testplan.json
-
-  twister-test-results:
-    name: "Publish Unit Tests Results"
-    env:
-      ELASTICSEARCH_KEY: ${{ secrets.ELASTICSEARCH_KEY }}
-      ELASTICSEARCH_SERVER: "https://elasticsearch.zephyrproject.io:443"
-    needs: twister-build
-    runs-on: ubuntu-22.04
-    # the build-and-test job might be skipped, we don't need to run this job then
-    if: success() || failure()
-
-    steps:
-      # Needed for opensearch and upload script
-      - if: github.event_name == 'push' || github.event_name == 'schedule'
-        name: Checkout
-        uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
-          persist-credentials: false
-
-      - name: Download Artifacts
-        uses: actions/download-artifact@v3
-        with:
-          path: artifacts
-
-      - if: github.event_name == 'push' || github.event_name == 'schedule'
-        name: Upload to opensearch
-        run: |
-          pip3 install elasticsearch
-          # set run date on upload to get consistent and unified data across the matrix.
-          run_date=`date --iso-8601=minutes`
-          if [ "${{github.event_name}}" = "push" ]; then
-            python3 ./scripts/ci/upload_test_results_es.py -r ${run_date} \
-              --index zephyr-main-ci-push-1 artifacts/*/*/twister.json
-          elif [ "${{github.event_name}}" = "schedule" ]; then
-            python3 ./scripts/ci/upload_test_results_es.py -r ${run_date} \
-              --index zephyr-main-ci-weekly-1 artifacts/*/*/twister.json
-          fi
-
-      - name: Merge Test Results
-        run: |
-          pip3 install junitparser junit2html
-          junitparser merge artifacts/*/*/twister.xml junit.xml
-          junit2html junit.xml junit.html
-
-      - name: Upload Unit Test Results in HTML
-        if: always()
-        uses: actions/upload-artifact@v3
-        with:
-          name: HTML Unit Test Results
-          if-no-files-found: ignore
-          path: |
-            junit.html
-
-      - name: Publish Unit Test Results
-        uses: EnricoMi/publish-unit-test-result-action@v2
-        with:
-          check_name: Unit Test Results
-          files: "**/twister.xml"
-          comment_mode: off

.github/workflows/twister_tests.yml

@@ -1,66 +0,0 @@
-# Copyright (c) 2020 Intel Corporation.
-# SPDX-License-Identifier: Apache-2.0
-
-name: Twister TestSuite
-
-on:
-  push:
-    branches:
-    - main
-    - v*-branch
-    paths:
-    - 'scripts/pylib/twister/**'
-    - 'scripts/twister'
-    - 'scripts/tests/twister/**'
-    - '.github/workflows/twister_tests.yml'
-  pull_request:
-    branches:
-    - main
-    - v*-branch
-    paths:
-    - 'scripts/pylib/twister/**'
-    - 'scripts/twister'
-    - 'scripts/tests/twister/**'
-    - '.github/workflows/twister_tests.yml'
-
-jobs:
-  twister-tests:
-    name: Twister Unit Tests
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        python-version: [3.8, 3.9, '3.10']
-        os: [ubuntu-22.04]
-    steps:
-    - name: checkout
-      uses: actions/checkout@v3
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v4
-      with:
-        python-version: ${{ matrix.python-version }}
-    - name: cache-pip-linux
-      if: startsWith(runner.os, 'Linux')
-      uses: actions/cache@v3
-      with:
-        path: ~/.cache/pip
-        key: ${{ runner.os }}-pip-${{ matrix.python-version }}
-        restore-keys: |
-          ${{ runner.os }}-pip-${{ matrix.python-version }}
-    - name: install-packages
-      run: |
-        pip3 install -r scripts/requirements-base.txt -r scripts/requirements-build-test.txt
-    - name: Run pytest for twisterlib
-      env:
-        ZEPHYR_BASE: ./
-        ZEPHYR_TOOLCHAIN_VARIANT: zephyr
-      run: |
-        echo "Run twister tests"
-        PYTHONPATH=./scripts/tests pytest ./scripts/tests/twister
-    - name: Run pytest for pytest-twister-harness
-      env:
-        ZEPHYR_BASE: ./
-        ZEPHYR_TOOLCHAIN_VARIANT: zephyr
-        PYTHONPATH: ./scripts/pylib/pytest-twister-harness/src:${PYTHONPATH}
-      run: |
-        echo "Run twister tests"
-        pytest ./scripts/pylib/pytest-twister-harness/tests

.github/workflows/west_cmds.yml

@@ -1,80 +0,0 @@
-# Copyright (c) 2020 Linaro Limited.
-# SPDX-License-Identifier: Apache-2.0
-
-name: Zephyr West Command Tests
-
-on:
-  push:
-    branches:
-    - main
-    - v*-branch
-    paths:
-    - 'scripts/west-commands.yml'
-    - 'scripts/west_commands/**'
-    - '.github/workflows/west_cmds.yml'
-  pull_request:
-    branches:
-    - main
-    - v*-branch
-    paths:
-    - 'scripts/west-commands.yml'
-    - 'scripts/west_commands/**'
-    - '.github/workflows/west_cmds.yml'
-
-jobs:
-  west-commnads:
-    name: West Command Tests
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        python-version: [3.8, 3.9, '3.10']
-        os: [ubuntu-22.04, macos-11, windows-2022]
-        exclude:
-        - os: macos-11
-          python-version: 3.6
-        - os: windows-2022
-          python-version: 3.6
-    steps:
-    - name: checkout
-      uses: actions/checkout@v3
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v4
-      with:
-        python-version: ${{ matrix.python-version }}
-    - name: cache-pip-linux
-      if: startsWith(runner.os, 'Linux')
-      uses: actions/cache@v3
-      with:
-        path: ~/.cache/pip
-        key: ${{ runner.os }}-pip-${{ matrix.python-version }}
-        restore-keys: |
-          ${{ runner.os }}-pip-${{ matrix.python-version }}
-    - name: cache-pip-mac
-      if: startsWith(runner.os, 'macOS')
-      uses: actions/cache@v3
-      with:
-        path: ~/Library/Caches/pip
-        # Trailing '-' was just to get a different cache name
-        key: ${{ runner.os }}-pip-${{ matrix.python-version }}-
-        restore-keys: |
-          ${{ runner.os }}-pip-${{ matrix.python-version }}-
-    - name: cache-pip-win
-      if: startsWith(runner.os, 'Windows')
-      uses: actions/cache@v3
-      with:
-        path: ~\AppData\Local\pip\Cache
-        key: ${{ runner.os }}-pip-${{ matrix.python-version }}
-        restore-keys: |
-          ${{ runner.os }}-pip-${{ matrix.python-version }}
-    - name: install pytest
-      run: |
-        pip3 install wheel
-        pip3 install pytest west pyelftools canopen natsort progress mypy intelhex psutil ply pyserial
-    - name: run pytest-win
-      if: runner.os == 'Windows'
-      run: |
-        python ./scripts/west_commands/run_tests.py
-    - name: run pytest-mac-linux
-      if: runner.os != 'Windows'
-      run: |
-        ./scripts/west_commands/run_tests.py

.gitignore

@@ -7,13 +7,8 @@
 *.swp
 *.swo
 *~
-.\#*
-\#*\#
-build*/
-!doc/build/
-!scripts/build
-!tests/drivers/build_all
-!scripts/pylib/build_helpers
+build
+build-*
 cscope.*
 .dir
 
@@ -35,49 +30,14 @@ doc/boards
 doc/samples
 doc/latex
 doc/themes/zephyr-docs-theme
-sanity-out*
-twister-out*
-bsim_out
-bsim_bt_out
-tests/RunResults.xml
+sanity-out/
 scripts/grub
-doc/reference/kconfig/*.rst
+doc/reference/kconfig/CONFIG_*
+doc/reference/kconfig/index.rst
 doc/doc.warnings
-.*project
-.settings
+tags
+.project
+.cproject
+.xxproject
 .envrc
 .vscode
-hide-defaults-note
-venv
-.venv
-.DS_Store
-.clangd
-
-# CI output
-compliance.xml
-_error.types
-
-# Tag files
-GPATH
-GRTAGS
-GTAGS
-TAGS
-tags
-
-.idea
-
-# from check_compliance.py
-BinaryFiles.txt
-Checkpatch.txt
-DevicetreeBindings.txt
-Gitlint.txt
-Identity.txt
-ImageSize.txt
-Kconfig.txt
-KconfigBasic.txt
-KconfigBasicNoModules.txt
-MaintainersFormat.txt
-ModulesMaintainers.txt
-Nits.txt
-Pylint.txt
-YAMLLint.txt

.gitlint

@@ -1,14 +1,10 @@
 # All these sections are optional, edit this file as you like.
-# Zephyr-specific defaults are located in scripts/gitlint/zephyr_commit_rules.py
 [general]
 ignore=title-trailing-punctuation, T3, title-max-length, T1, body-hard-tab, B3, B1
 # verbosity should be a value between 1 and 3, the commandline -v flags take precedence over this
 verbosity = 3
 # By default gitlint will ignore merge commits. Set to 'false' to disable.
-ignore-merge-commits=false
-ignore-revert-commits=false
-ignore-fixup-commits=false
-ignore-squash-commits=false
+ignore-merge-commits=true
 # Enable debug mode (prints more output). Disabled by default
 debug = false
 
@@ -17,16 +13,16 @@ debug = false
 extra-path=scripts/gitlint
 
 [title-max-length-no-revert]
-# line-length=75
+line-length=72
 
 [body-min-line-count]
-# min-line-count=1
+min-line-count=1
 
 [body-max-line-count]
-# max-line-count=200
+max-line-count=200
 
 [title-starts-with-subsystem]
-regex = ^(?!subsys:)(([^:]+):)(\s([^:]+):)*\s(.+)$
+regex = ^(([^:]+):)(\s([^:]+):)*\s(.+)$
 
 [title-must-not-contain-word]
 # Comma-separated list of words that should not occur in the title. Matching is case
@@ -43,7 +39,7 @@ words=wip
 
 [max-line-length-with-exceptions]
 # B1 = body-max-line-length
-# line-length=75
+line-length=72
 
 [body-min-length]
 min-length=3

.known-issues/README

@@ -0,0 +1,55 @@
+This directory contains configuration files to ignore errors found in
+the build and test process which are known to the developers and for
+now can be safely ignored.
+
+To use:
+
+ $ cd zephyr
+ $ make SOMETHING >& result
+ $ scripts/filter-known-issues.py result
+
+It is included in the source tree so if anyone has to submit anything
+that triggers some kind of error that is a false positive, it can
+include the "ignore me" file, properly documented.
+
+Each file can contain one or more multiline Python regular expressions
+(https://docs.python.org/2/library/re.html#regular-expression-syntax)
+that match an error message. Multiple regular expressions are
+separated by comment blocks (that start with #). Note that an empty
+line still is considered part of the multiline regular expression.
+
+For example
+
+---beginning---
+#
+# This testcase always fails, pending fix ZEP-1234
+#
+.*/tests/kernel/grumpy .* FAIL
+#
+# Documentation issue, masks:
+#
+# /home/e/inaky/z/kernel.git/doc/api/io_interfaces.rst:28: WARNING: Invalid definition: Expected identifier in nested name. [error at 19]
+#  struct dev_config::@65  dev_config::bits
+#  -------------------^
+#
+^(?P<filename>.+/doc/api/io_interfaces.rst):(?P<lineno>[0-9]+): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^\s+struct dev_config::@[0-9]+  dev_config::bits.*
+^\s+-+\^
+---end---
+
+Note you want to:
+
+- use relateive paths; instead of
+  /home/me/mydir/zephyr/something/somewhere.c you will want
+  ^.*/something/somewhere.c (as they will depend on where it is being
+  built)
+
+- Replace line numbers with [0-9]+, as they will change
+
+- (?P<filename>[-._/\w]+/something/somewhere.c) saves the match on
+  that file path in a "variable" called 'filename' that later you can
+  match with (?P=filename) if you want to match multiple lines of the
+  same error message.
+
+Can get really twisted and interesting in terms of regexps; they are
+powerful, so start small :)

.known-issues/doc/bluetooth.conf

@@ -0,0 +1,50 @@
+#
+# Bluetooth unnamed struct definition
+#
+# FIXME: all these should match the relative filename
+#
+^(?P<filename>[-._/\w]+/doc/api/bluetooth.rst):(?P<lineno>[0-9]+): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]$
+^[ \t]*$
+^[ \t]*\^$
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]$
+^[ \t]*$
+^[ \t]*\^$
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected end of definition. \[error at [0-9]+]$
+^.*bt_conn_info.__unnamed__.*$
+^[- \t]*\^$
+#
+# bt_gatt_discover_params unnamed struct definition
+#
+^(?P<filename>[-._/\w]+/doc/api/bluetooth.rst):(?P<lineno>[0-9]+): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected end of definition. \[error at [0-9]+]
+^.*bt_gatt_discover_params.__unnamed__.*
+^[- \t]*\^
+#
+# Bluetooth GATT unnamed struct definition
+#
+^(?P<filename>[-._/\w]+/doc/api/bluetooth.rst):(?P<lineno>[0-9]+): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected end of definition. \[error at [0-9]+]
+^.*bt_gatt_read_params.__unnamed__.*
+^[- \t]*\^
+#
+# Bluetooth mesh unnamed struct definition
+#
+^(?P<filename>[-._/\w]+/doc/api/bluetooth.rst):(?P<lineno>[0-9]+): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected end of definition. \[error at [0-9]+]
+^.*bt_mesh_model.__unnamed__.*
+^[- \t]*\^

.known-issues/doc/display.conf

@@ -0,0 +1,15 @@
+#
+# Display
+#
+#
+# include
+#
+^(?P<filename>[-._/\w]+/doc/api/display_api.rst):(?P<lineno>[0-9]+): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected end of definition. \[error at [0-9]+]
+^.*mb_image.__unnamed__
+^[- \t]*\^

.known-issues/doc/duplicate.conf

@@ -0,0 +1,6 @@
+#
+^(?P<filename>([\-:\\/\w\.])+[/\\]doc[/\\]api[/\\]file_system.rst):(?P<lineno>[0-9]+): WARNING: Duplicate declaration.
+#
+^(?P<filename>([\-:\\/\w\.])+[/\\]doc[/\\]api[/\\]io_interfaces.rst):(?P<lineno>[0-9]+): WARNING: Duplicate declaration.
+#
+^(?P<filename>([\-:\\/\w\.])+[/\\]doc[/\\]subsystems[/\\]sensor.rst):(?P<lineno>[0-9]+): WARNING: Duplicate declaration.

.known-issues/doc/kernel.conf

@@ -0,0 +1,24 @@
+#
+# Kernel
+#
+#
+# include/kernel.h warnings
+#
+^(?P<filename>[-._/\w]+/doc/api/kernel_api.rst):(?P<lineno>[0-9]+): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected end of definition. \[error at [0-9]+]
+^.*k_poll_event.__unnamed__
+^[- \t]*\^

.known-issues/doc/misc.conf

@@ -0,0 +1,15 @@
+#
+# Display
+#
+#
+# include
+#
+^(?P<filename>[-._/\w]+/doc/api/misc_api.rst):(?P<lineno>[0-9]+): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected end of definition. \[error at [0-9]+]
+^.*json_obj_descr.__unnamed__
+^[- \t]*\^

.known-issues/doc/networking.conf

@@ -0,0 +1,66 @@
+#
+# Networking
+#
+#
+# include/net/net_ip.h warnings
+#
+^(?P<filename>[-._/\w]+/doc/api/networking.rst):(?P<lineno>[0-9]+): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected end of definition. \[error at [0-9]+]
+^.*in[_6]+addr.in[46]_u
+^[- \t]*\^
+#
+# include/net/net_mgmt.h
+#
+^(?P<filename>[-._/\w]+/doc/api/networking.rst):(?P<lineno>[0-9]+): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected end of definition. \[error at [0-9]+]
+^.*net_mgmt_event_callback.__unnamed__
+^[- \t]*\^
+#
+# include/net/buf.h
+#
+^(?P<filename>[-._/\w]+/doc/api/networking.rst):(?P<lineno>[0-9]+): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected end of definition. \[error at [0-9]+]
+^.*net_buf.__unnamed__
+^[- \t]*\^
+#
+# include/net/ieee802154.h
+#
+^(?P<filename>[-._/\w]+/doc/api/networking.rst):(?P<lineno>[0-9]+): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected end of definition. \[error at [0-9]+]
+^.*ieee802154_req_params.__unnamed__
+^[- \t]*\^
+#
+# include/net/net_context.h
+#
+^(?P<filename>[-._/\w]+/doc/api/networking.rst):(?P<lineno>[0-9]+): WARNING: Invalid definition: Expected end of definition. \[error at [0-9]+]
+^.*net_context.options
+^[- \t]*\^
+#
+# include/net/net_stats.h
+#
+^(?P<filename>[-._/\w]+/doc/api/networking.rst):(?P<lineno>[0-9]+): WARNING: Invalid definition: Expected end of definition. \[error at [0-9]+]
+^.*net_stats_tc.[a-z]+
+^[- \t]*\^

.known-issues/doc/uart.conf

@@ -0,0 +1,15 @@
+#
+# UART unnamed struct definition
+#
+^(?P<filename>[-._/\w]+/doc/api/io_interfaces.rst):(?P<lineno>[0-9]+): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
+^[ \t]*
+^[ \t]*\^
+^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected end of definition. \[error at [0-9]+]
+^.*uart_device_config.__unnamed__.*
+^[- \t]*\^

.known-issues/make.conf

@@ -0,0 +1,6 @@
+#
+# When filtering output of the build process, ignore lines that don't
+# provide any information that helps the invoker tell if there was an
+# error.
+#
+^make: (Entering|Leaving) directory .*

.known-issues/testcases/block.conf

@@ -0,0 +1,11 @@
+#
+# When executing test cases, ignore the following messages as they are
+# not to be considered hard errors.
+#
+# Block line when test case cannot run in the HW due to server or connection issues
+#
+^BLCK0/[-a-z0-9:]+	(.+)#test @[^/]+/[^:]+:[^:]+: evaluation blocked(.*)$
+#
+# Block line when there is an issue with the YKUSH serial connection
+#
+^BLCK0/[-a-z0-9:]+	(.+)#test @[^/]+/(?P<board>[^:]+):[^:]+: exception: 400: (?P=board): Cannot find YKUSH serial '[A-Z0-9]+'$

.known-issues/testcases/makefile.conf

@@ -0,0 +1,18 @@
+#
+# When executing test cases under TCF, ignore the following messages
+# as they are not to be considered hard errors.
+#
+# TCF is run under make for taking advantage of the jobserver; when
+# the testcase execution fail, make will complain, which we can
+# ignore ('sommersault' was the old name of the target).
+#
+^/tmp/tcf-[a-zA-Z0-9]+.mk:[0-9]+: recipe for target ('tcf-jobserver-run'|'sommersault') failed$
+#
+# More of the same
+#
+^make: \*\*\* \[(tcf-jobserver-run|sommersault)\] Error 1$
+#
+# TCF's summary line. We don't need to consider it to determine if the
+# run failed or passed.
+#
+^[A-Z]+0/\S+:\s+\S+\s+@\S+: [0-9]+ tests \([0-9]+ passed, [0-9]+ failed, [0-9]+ blocked, [0-9]+ skipped\).*$

.known-issues/testcases/skip.conf

@@ -0,0 +1,4 @@
+#
+# Skip line when test case is eliminated due to filters
+#
+^SKIP0/\S+\s+\S+: No targets can be used \(all [0-9]+ selected from [0-9]+ available eliminated by testcase filtering\)$

.mailmap

@@ -1,121 +1,21 @@
-Alexandr Kolosov <rikorsev@gmail.com>
-Alexandre d'Alton <alexandre.dalton@intel.com>
+Dirk Brandewie <dirk.j.brandewie@intel.com> <dirk.j.brandewie@intel.com>
+Mike Hirst <michael.hirst@windriver.com> <michael.hirst@windriver.com>
+Johan Kruger <johan.kruger@windriver.com> <johan.kruger@windriver.com>
+Leona Cook <leonax.cook@intel.com> <lsc@hackeress.com>
+Leona Cook <leonax.cook@intel.com> <leonax.cook@intel.com>
+Thomas Heeley <thomas.heeley@intel.com> <thomas.heeley@intel.com>
+Shuang He <shuang.he@intel.com> <shuang.he@intel.com>
+Chuck Jordan <cjordan@synopsys.com> <cjordan@synopsys.com>
+Jeremie Garcia <jeremie.garcia@intel.com> <jeremie.garcia@intel.com>
+Bit Pathe <bitpathe@gmail.com> <bitpathe@gmail.com>
+Carles Cufi <carles.cufi@nordicsemi.no> <carles.cufi@nordicsemi.no>
+Kuo-Lang Tseng <kuo-lang.tseng@intel.com> <kuo-lang.tseng@intel.com>
+Gerardo Aceves <gerardo.aceves@intel.com> <gerardo.aceves@intel.com>
+Evan Couzens <evanx.couzens@intel.com> <evanx.couzens@intel.com>
+Lei Liu <lei.a.liu@intel.com> <lei.a.liu@intel.com>
+Douglas Su <d0u9.su@outlook.com> <d0u9.su@outlook.com>
+Keren Siman-Tov <keren.siman-tov@intel.com> <keren.siman-tov@intel.com>
+Naga Raja Rao Tulasi <tulasi.r@tcs.com> <tulasi.r@tcs.com>
+Felipe Neves <ryukokki.felipe@gmail.com> <ryukokki.felipe@gmail.com>
 Amir Kaplan <amir.kaplan@intel.com> <amir.kaplan@intel.com>
 Anas Nashif <anas.nashif@intel.com> <anas.nashif@intel.com>
-Andrzej Kuroś <andrzej.kuros@nordicsemi.no>
-Anthony Smigielski <thebasti0ncode@gmail.com>
-Armand Ciejak <armand@riedonetworks.com>  <armandciejak@users.noreply.github.com>
-Aska Wu <aska.wu@linaro.org>
-Bit Pathe <bitpathe@gmail.com> <bitpathe@gmail.com>
-Bjarki Arge Andreasen <baa@trackunit.com>
-Carles Cufi <carles.cufi@nordicsemi.no> <carles.cufi@nordicsemi.no>
-chao an <anchao@xiaomi.com>
-Charles E. Youse <charles.youse@intel.com>
-Chen Xingyu <hi@xingrz.me>
-Christoph Schnetzler <christoph.schnetzler@husqvarnagroup.com>
-Christoph Schramm <schramm@makaio.com>
-Christopher Friedt <cfriedt@meta.com>
-Christopher Friedt <cfriedt@meta.com> <cfriedt@fb.com>
-Chuck Jordan <cjordan@synopsys.com> <cjordan@synopsys.com>
-Chunlin Han <chunlin.han@linaro.org> <chunlin.han@acer.com>
-David B. Kinder <david.b.kinder@intel.com>
-David Komel <a8961713@gmail.com>
-David Leach <david.leach@nxp.com>
-Dirk Brandewie <dirk.j.brandewie@intel.com> <dirk.j.brandewie@intel.com>
-Douglas Su <d0u9.su@outlook.com> <d0u9.su@outlook.com>
-Enjia Mai <enjia.mai@intel.com>
-Enjia Mai <enjia.mai@intel.com> <enjiax.mai@intel.com>
-Evan Couzens <evanx.couzens@intel.com> <evanx.couzens@intel.com>
-Evgeniy Paltsev <PaltsevEvgeniy@gmail.com>
-Evgeniy Paltsev <PaltsevEvgeniy@gmail.com> <Eugeniy.Paltsev@synopsys.com>
-Felipe Neves <ryukokki.felipe@gmail.com> <ryukokki.felipe@gmail.com>
-Findlay Feng <i@fengch.me>
-Flavio Arieta Netto <flavio@exati.com.br>
-Francois Ramu <francois.ramu@st.com>
-Gerardo Aceves <gerardo.aceves@intel.com> <gerardo.aceves@intel.com>
-Gregory Shue <gregory.shue@legrand.com>
-Gregory Shue <gregory.shue@legrand.com> <gregory.shue@legrand.us>
-HaiLong Yang <cameledyang@pm.me>
-James Johnson <james.johnson672@t-mobile.com>
-Jarno Lämsä <jarno.lamsa@nordicsemi.no>
-Jędrzej Ciupis <jedrzej.ciupis@nordicsemi.no>
-Jeremie Garcia <jeremie.garcia@intel.com> <jeremie.garcia@intel.com>
-Jim Benjamin Luther <jilu@oticon.com>
-Johan Kruger <johan.kruger@windriver.com> <johan.kruger@windriver.com>
-Johann Fischer <j.fischer@phytec.de>
-Jørgen Kvalvaag <jorgen.kvalvaag@nordicsemi.no>
-Juan Manuel Cruz Alcaraz <juan.m.cruz.alcaraz@intel.com>
-Juan Solano <juanx.solano.menacho@intel.com>
-Julien D'Ascenzio <julien.dascenzio@paratronic.fr>
-Jun Li <jun.r.li@intel.com>
-Justin Watson <jwatson5@gmail.com>
-Kamil Sroka <kamil.sroka@nordicsemi.no>
-Katarzyna Giądła <katarzyna.giadla@nordicsemi.no>
-Keren Siman-Tov <keren.siman-tov@intel.com> <keren.siman-tov@intel.com>
-Krzysztof Chruściński <krzysztof.chruscinski@nordicsemi.no>
-Kuo-Lang Tseng <kuo-lang.tseng@intel.com> <kuo-lang.tseng@intel.com>
-Lei Liu <lei.a.liu@intel.com> <lei.a.liu@intel.com>
-Leona Cook <leonax.cook@intel.com> <leonax.cook@intel.com>
-Leona Cook <leonax.cook@intel.com> <lsc@hackeress.com>
-Lixin Guo <lixinx.guo@intel.com>
-Łukasz Mazur <lukasz.mazur@hidglobal.com>
-Manuel Argüelles <manuel.arguelles@nxp.com>
-Manuel Argüelles <manuel.arguelles@nxp.com> <manuel.arguelles@coredumplabs.com>
-Marc Herbert <marc.herbert@intel.com> <46978960+marc-hb@users.noreply.github.com>
-Marin Jurjević <marin.jurjevic@hotmail.com>
-Mariusz Ryndzionek <mariusz.ryndzionek@firmwave.com>
-Mariusz Skamra <mariusz.skamra@codecoup.pl>
-Mariusz Skamra <mariusz.skamra@codecoup.pl> <mariusz.skamra@tieto.com>
-Martí Bolívar <marti.bolivar@nordicsemi.no>
-Martí Bolívar <marti.bolivar@nordicsemi.no> <marti.bolivar@linaro.org>
-Martí Bolívar <marti.bolivar@nordicsemi.no> <marti.f.bolivar@gmail.com>
-Martí Bolívar <marti.bolivar@nordicsemi.no> <marti@foundries.io>
-Martí Bolívar <marti.bolivar@nordicsemi.no> <marti@opensourcefoundries.com>
-Martin Jäger <martin@libre.solar>  <17674105+martinjaeger@users.noreply.github.com>
-Mateusz Hołenko <mholenko@antmicro.com>
-Michael Rosen <michael.r.rosen@intel.com>
-Michal Narajowski <michal.narajowski@codecoup.pl>
-Mike Hirst <michael.hirst@windriver.com> <michael.hirst@windriver.com>
-Ming Shao <ming.shao@intel.com>
-Mohan Kumar Kumar <mohankm@fb.com>
-Naga Raja Rao Tulasi <tulasi.r@tcs.com> <tulasi.r@tcs.com>
-Navin Sankar Velliangiri <navin@linumiz.com>
-NingX Zhao <ningx.zhao@intel.com>
-Nishikant Nayak <nishikantax.nayak@intel.com>
-Ole Sæther <ole.saether@nordicsemi.no>
-Pavel Král <pavel.kral@omsquare.com>
-Pavel Vasilyev <pavel.vasilyev@nordicsemi.no>
-Paweł Czarnecki <pczarnecki@antmicro.com>
-Paweł Czarnecki <pczarnecki@antmicro.com>
-Paweł Czarnecki <pczarnecki@antmicro.com> <pczarnecki@internships.antmicro.com>
-Paweł Kwiek <pawel.kwiek@nordicsemi.no>
-Peng Chen <peng1.chen@intel.com>
-Peter Bigot <peter.bigot@nordicsemi.no>
-Peter Bigot <peter.bigot@nordicsemi.no> <pab@pabigot.com>
-Peter Johanson <peter@peterjohanson.com>
-Piyush Itankar <piyush.t.itankar@intel.com>
-Radosław Koppel <radoslaw.koppel@nordicsemi.no>
-Radosław Koppel <radoslaw.koppel@nordicsemi.no> <r.koppel@k-el.com>
-Raja D. Singh <rdsingh@iotwizards.com>
-Ricardo Salveti <ricardo@opensourcefoundries.com>
-Ricardo Salveti <ricardo@opensourcefoundries.com> <ricardo.salveti@linaro.org>
-Ruud Derwig <Ruud.Derwig@synopsys.com> <Ruud.Derwig@synopsys.com>
-Saku Rautio <saku.rautio@nordicsemi.no>
-Scott Worley <scott.worley@microchip.com>
-Sean Nyekjaer <sean@geanix.com> <sean.nyekjaer@prevas.dk>
-Sean Nyekjaer <sean@geanix.com> <sean@nyekjaer.dk>
-Sharron Liu <sharron.liu@intel.com>
-Shilpashree L C <shilpashree.lc@intel.com>
-Shuang He <shuang.he@intel.com> <shuang.he@intel.com>
-Sigvart Hovland <sigvart.hovland@nordicsemi.no>
-Stéphane D'Alu <sdalu@sdalu.com>
-Stine Åkredalen <stine.akredalen@nordicsemi.no>
-Thomas Heeley <thomas.heeley@intel.com> <thomas.heeley@intel.com>
-Tim Sørensen <tims@demant.com>
-Tim Sørensen <tims@demant.com> <tims@oticon.com>
-Vinayak Kariappa Chettimada <vinayak.kariappa.chettimada@nordicsemi.no> <vinayak.kariappa.chettimada@nordicsemi.no> <vich@nordicsemi.no> <vinayak.kariappa@gmail.com>
-Xiaorui Hu <xiaorui.hu@linaro.org>
-Yannis Damigos <giannis.damigos@gmail.com> <ydamigos@iccs.gr>
-Yonattan Louise <yonattan.a.louise.mendoza@intel.com>
-Yonattan Louise <yonattan.a.louise.mendoza@intel.com> <yonattan.a.louise.mendoza@linux.intel.com>
-YouhuaX Zhu <youhuax.zhu@intel.com>

.shippable.yml

@@ -0,0 +1,147 @@
+language: c
+
+compiler: gcc
+
+env:
+    global:
+        - SDK=0.9.3
+        - SANITYCHECK_OPTIONS=" --inline-logs"
+        - SANITYCHECK_OPTIONS_RETRY="${SANITYCHECK_OPTIONS} --only-failed --outdir=out-2nd-pass"
+        - ZEPHYR_SDK_INSTALL_DIR=/opt/sdk/zephyr-sdk-0.9.3
+        - ZEPHYR_TOOLCHAIN_VARIANT=zephyr
+        - MATRIX_BUILDS="5"
+        - MATRIX_BUILDS_EXTRA="5"
+    matrix:
+        - MATRIX_BUILD="1"
+        - MATRIX_BUILD="2"
+        - MATRIX_BUILD="3"
+        - MATRIX_BUILD="4"
+        - MATRIX_BUILD="5"
+
+build:
+    cache: true
+    cache_dir_list:
+        - ${SHIPPABLE_BUILD_DIR}/ccache
+    pre_ci_boot:
+        image_name: zephyrprojectrtos/ci
+        image_tag: v0.4-rc2
+        pull: true
+        options: "-e HOME=/home/buildslave --privileged=true --tty --net=bridge --user buildslave"
+
+    ci:
+      - export CCACHE_DIR=${SHIPPABLE_BUILD_DIR}/ccache/.ccache
+      - >
+        if [ "$IS_PULL_REQUEST" = "true" ]; then
+          git rebase origin/${PULL_REQUEST_BASE_BRANCH};
+        fi
+      - source zephyr-env.sh
+      - ccache -c -s --max-size=5000M
+      - >
+          if [ "$MATRIX_BUILD" = "5" -a "$IS_PULL_REQUEST" = "true" ]; then
+            export COMMIT_RANGE=origin/${PULL_REQUEST_BASE_BRANCH}..HEAD
+            echo "Building a Pull Request";
+            echo "- Building Documentation";
+            echo "Commit range:" ${COMMIT_RANGE}
+            make htmldocs
+            if [ "$?" != "0" ]; then
+              echo "Documentation build failed";
+              exit 1;
+            fi
+            if [ -s doc/doc.warnings ]; then
+              echo " => New documentation warnings/errors";
+              cp doc/doc.warnings doc.warnings
+            fi;
+            echo "- Verify commit message, coding style, doc build";
+            ./scripts/ci/check-compliance.py --commits ${COMMIT_RANGE} || true;
+          fi;
+      - >
+          if [ "$IS_PULL_REQUEST" = "true" ]; then
+            ./scripts/ci/get_modified_tests.py --commits origin/${PULL_REQUEST_BASE_BRANCH}..HEAD > modified_tests.args;
+            ./scripts/ci/get_modified_boards.py --commits origin/${PULL_REQUEST_BASE_BRANCH}..HEAD > modified_boards.args;
+
+            if [ -s modified_boards.args ]; then
+              ./scripts/sanitycheck ${SANITYCHECK_OPTIONS} +modified_boards.args --save-tests test_file.txt;
+            fi;
+            if [ -s modified_tests.args ]; then
+              ./scripts/sanitycheck ${SANITYCHECK_OPTIONS} +modified_tests.args --save-tests test_file.txt;
+            fi;
+            rm -f modified_tests.args modified_boards.args;
+          fi;
+      - ./scripts/sanitycheck ${SANITYCHECK_OPTIONS} --save-tests test_file.txt
+      - ./scripts/sanitycheck ${SANITYCHECK_OPTIONS} --load-tests test_file.txt --subset ${MATRIX_BUILD}/${MATRIX_BUILDS} || ./scripts/sanitycheck ${SANITYCHECK_OPTIONS_RETRY} || ./scripts/sanitycheck ${SANITYCHECK_OPTIONS_RETRY}
+      - rm test_file.txt
+      - ccache -s
+    on_failure:
+      - rm -rf ccache $HOME/.cache/zephyr
+      - mkdir -p shippable/testresults
+      - mkdir -p shippable/codecoverage
+      - source zephyr-env.sh
+      - >
+         if [ "$MATRIX_BUILD" = "1" ]; then
+            gcovr -r ${ZEPHYR_BASE} -x > shippable/codecoverage/coverage.xml;
+            lcov --capture --directory sanity-out/native_posix/ --directory sanity-out/unit_testing/ --output-file lcov.pre.info -q --rc lcov_branch_coverage=1;
+            lcov -q --remove lcov.pre.info mylib.c --remove lcov.pre.info ext/\* --remove lcov.pre.info *generated* -o lcov.info --rc lcov_branch_coverage=1;
+            rm lcov.pre.info;
+            rm -rf sanity-out out-2nd-pass;
+            bash <(curl -s https://codecov.io/bash) -f "lcov.info" -X coveragepy -X fixes;
+            rm lcov.info;
+         else
+            rm -rf sanity-out out-2nd-pass;
+         fi;
+      - >
+          if [ -e compliance.xml ]; then
+            cp compliance.xml shippable/testresults/;
+          fi;
+      - >
+          if [ -e ./scripts/sanity_chk/last_sanity.xml ]; then
+            cp ./scripts/sanity_chk/last_sanity.xml shippable/testresults/;
+          fi;
+    on_success:
+      - rm -rf ccache $HOME/.cache/zephyr
+      - mkdir -p shippable/testresults
+      - mkdir -p shippable/codecoverage
+      - source zephyr-env.sh
+      - >
+         if [ "$MATRIX_BUILD" = "1" ]; then
+            gcovr -r ${ZEPHYR_BASE} -x > shippable/codecoverage/coverage.xml;
+            lcov --capture --directory sanity-out/native_posix/ --directory sanity-out/unit_testing/ --output-file lcov.pre.info -q --rc lcov_branch_coverage=1;
+            lcov -q --remove lcov.pre.info mylib.c --remove lcov.pre.info ext/\* --remove lcov.pre.info *generated* -o lcov.info --rc lcov_branch_coverage=1;
+            rm lcov.pre.info;
+            rm -rf sanity-out out-2nd-pass;
+            bash <(curl -s https://codecov.io/bash) -f "lcov.info" -X coveragepy -X fixes;
+            rm lcov.info;
+         else
+            rm -rf sanity-out out-2nd-pass;
+         fi;
+      - >
+          if [ -e compliance.xml ]; then
+            cp compliance.xml shippable/testresults/;
+          fi;
+      - >
+          if [ -e ./scripts/sanity_chk/last_sanity.xml ]; then
+            cp ./scripts/sanity_chk/last_sanity.xml shippable/testresults/;
+          fi;
+
+integrations:
+  notifications:
+    - integrationName: slack_integration
+      type: slack
+      recipients:
+        - "#ci"
+      branches:
+        only:
+          - master
+      on_success: never
+      on_failure: always
+    - integrationName: email
+      type: email
+      recipients:
+        - builds@zephyrproject.org
+      branches:
+        only:
+          - master
+          - net
+          - bluetooth
+          - arm
+      on_success: never
+      on_failure: never

.uncrustify.cfg

@@ -0,0 +1,79 @@
+indent_with_tabs    = 2     # 1=indent to level only, 2=indent with tabs
+input_tab_size      = 8     # original tab size
+output_tab_size     = 8     # new tab size
+indent_columns      = output_tab_size
+indent_label        = 1     # pos: absolute col, neg: relative column
+indent_switch_case  = 0     # number
+
+#
+# inter-symbol newlines
+#
+
+nl_enum_brace       = remove    # "enum {" vs "enum \n {"
+nl_union_brace      = remove    # "union {" vs "union \n {"
+nl_struct_brace     = remove    # "struct {" vs "struct \n {"
+nl_do_brace         = remove    # "do {" vs "do \n {"
+nl_if_brace         = remove    # "if () {" vs "if () \n {"
+nl_for_brace        = remove    # "for () {" vs "for () \n {"
+nl_else_brace       = remove    # "else {" vs "else \n {"
+nl_while_brace      = remove    # "while () {" vs "while () \n {"
+nl_switch_brace     = remove    # "switch () {" vs "switch () \n {"
+nl_brace_while      = remove    # "} while" vs "} \n while" - cuddle while
+nl_brace_else       = remove    # "} \n else" vs "} else"
+nl_func_var_def_blk = 1
+nl_fcall_brace      = remove    # "list_for_each() {" vs "list_for_each()\n{"
+nl_fdef_brace       = add       # "int foo() {" vs "int foo()\n{"
+
+#
+# Source code modifications
+#
+
+mod_paren_on_return = ignore    # "return 1;" vs "return (1);"
+mod_full_brace_if   = add       # "if() { } else { }" vs "if() else"
+
+#
+# inter-character spacing options
+#
+
+sp_sizeof_paren     = remove    # "sizeof (int)" vs "sizeof(int)"
+sp_before_sparen    = force     # "if (" vs "if("
+sp_after_sparen     = force     # "if () {" vs "if (){"
+sp_inside_braces    = add       # "{ 1 }" vs "{1}"
+sp_inside_braces_struct = add   # "{ 1 }" vs "{1}"
+sp_inside_braces_enum   = add   # "{ 1 }" vs "{1}"
+sp_assign           = add
+sp_arith            = add
+sp_bool             = add
+sp_compare          = add
+sp_assign           = add
+sp_after_comma      = add
+sp_func_def_paren   = remove    # "int foo (){" vs "int foo(){"
+sp_func_call_paren  = remove    # "foo (" vs "foo("
+sp_func_proto_paren = remove    # "int foo ();" vs "int foo();"
+sp_else_brace       = add       # ignore/add/remove/force
+sp_before_ptr_star  = add       # ignore/add/remove/force
+sp_after_ptr_star   = remove    # ignore/add/remove/force
+sp_between_ptr_star = remove    # ignore/add/remove/force
+sp_inside_paren     = remove    # remove spaces inside parens
+sp_paren_paren      = remove    # remove spaces between nested parens
+sp_inside_sparen    = remove    # remove spaces inside parens for if, while and the like
+sp_brace_else       = add       # ignore/add/remove/force
+sp_before_nl_cont   = ignore
+sp_cmt_cpp_start    = add
+sp_brace_typedef    = add       # }typedefd_name -> } typedefd_name
+
+cmt_sp_after_star_cont          = 1
+#
+# Aligning stuff
+#
+
+align_with_tabs     = FALSE     # use tabs to align
+align_on_tabstop    = TRUE      # align on tabstops
+align_enum_equ_span = 4         # '=' in enum definition
+align_struct_init_span  = 0     # align stuff in a structure init '= { }'
+align_right_cmt_span    = 3
+align_nl_cont	    = TRUE
+
+
+
+sp_pp_concat                              = ignore      # ignore/add/remove/force

.yamllint

@@ -1,16 +0,0 @@
-# SPDX-License-Identifier: Apache-2.0
-
-extends: default
-
-rules:
-  line-length:
-    max: 100
-  comments:
-    min-spaces-from-content: 1
-  indentation:
-    spaces: 2
-    indent-sequences: consistent
-  document-start:
-    present: false
-  truthy:
-    check-keys: false

CODE_OF_CONDUCT.md

@@ -1,78 +0,0 @@
-# Contributor Covenant Code of Conduct
-
-## Our Pledge
-
-In the interest of fostering an open and welcoming environment, we as
-contributors and maintainers pledge to making participation in our project and
-our community a harassment-free experience for everyone, regardless of age, body
-size, disability, ethnicity, sex characteristics, gender identity and expression,
-level of experience, education, socio-economic status, nationality, personal
-appearance, race, religion, or sexual identity and orientation.
-
-## Our Standards
-
-Examples of behavior that contributes to creating a positive environment
-include:
-
-* Using welcoming and inclusive language
-* Being respectful of differing viewpoints and experiences
-* Gracefully accepting constructive criticism
-* Focusing on what is best for the community
-* Showing empathy towards other community members
-
-Examples of unacceptable behavior by participants include:
-
-* The use of sexualized language or imagery and unwelcome sexual attention or
- advances
-* Trolling, insulting/derogatory comments, and personal or political attacks
-* Public or private harassment
-* Publishing others' private information, such as a physical or electronic
- address, without explicit permission
-* Other conduct which could reasonably be considered inappropriate in a
- professional setting
-
-## Our Responsibilities
-
-Project maintainers are responsible for clarifying the standards of acceptable
-behavior and are expected to take appropriate and fair corrective action in
-response to any instances of unacceptable behavior.
-
-Project maintainers have the right and responsibility to remove, edit, or
-reject comments, commits, code, wiki edits, issues, and other contributions
-that are not aligned to this Code of Conduct, or to ban temporarily or
-permanently any contributor for other behaviors that they deem inappropriate,
-threatening, offensive, or harmful.
-
-## Scope
-
-This Code of Conduct applies both within project spaces and in public spaces
-when an individual is representing the project or its community. Examples of
-representing a project or community include using an official project e-mail
-address, posting via an official social media account, or acting as an appointed
-representative at an online or offline event. Representation of a project may be
-further defined and clarified by project maintainers.
-
-## Enforcement
-
-Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported by contacting the project team at conduct@zephyrproject.org.
-Reports will be received by Kate Stewart (Linux Foundation) and Amy Occhialino
-(Intel). All complaints will be reviewed and investigated, and will result in a
-response that is deemed necessary and appropriate to the circumstances. The
-project team is obligated to maintain confidentiality with regard to the
-reporter of an incident.  Further details of specific enforcement policies may
-be posted separately.
-
-Project maintainers who do not follow or enforce the Code of Conduct in good
-faith may face temporary or permanent repercussions as determined by other
-members of the project's leadership.
-
-## Attribution
-
-This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
-available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
-
-[homepage]: https://www.contributor-covenant.org
-
-For answers to common questions about this code of conduct, see
-https://www.contributor-covenant.org/faq

CONTRIBUTING.rst

@@ -6,34 +6,630 @@ patches directly to the project.  In our collaborative open source environment,
 standards and methods for submitting changes help reduce the chaos that can result
 from an active development community.
 
-This document briefly summarizes the full `Contribution
-Guidelines <http://docs.zephyrproject.org/latest/contribute/index.html>`_
-documentation.
+This document explains how to participate in project conversations, log bugs
+and enhancement requests, and submit patches to the project so your patch will
+be accepted quickly in the codebase.
 
-* Zephyr uses the permissive open source `Apache 2.0 license`_
-  that allows you to freely use, modify, distribute and sell your own products
-  that include Apache 2.0 licensed software.
+Licensing
+*********
 
-* There are some imported or reused components of the Zephyr project that
-  use other licensing and are clearly identified.
+Licensing is very important to open source projects. It helps ensure the
+software continues to be available under the terms that the author desired.
 
-* The Developer Certificate of Origin (DCO) process is followed to
-  ensure developers are following licensing criteria for their
-  contributions, and documented with a ``Signed-off-by`` line in commits.
+.. _Apache 2.0 license:
+   https://github.com/zephyrproject-rtos/zephyr/blob/master/LICENSE
 
-* Zephyr development workflow is supported on Linux, macOS, and Windows,
-  (with a few exceptions).
+.. _GitHub repo: https://github.com/zephyrproject-rtos/zephyr
 
-* Source code for the project is maintained in the GitHub repo:
-  https://github.com/zephyrproject-rtos/zephyr
+Zephyr uses the `Apache 2.0 license`_ (as found in the LICENSE file in
+the project's `GitHub repo`_) to strike a balance between open
+contribution and allowing you to use the software however you would like
+to.  The Apache 2.0 license is a permissive open source license that
+allows you to freely use, modify, distribute and sell your own products
+that include Apache 2.0 licensed software.  (For more information about
+this, check out articles such as `Why choose Apache 2.0 licensing`_ and
+`Top 10 Apache License Questions Answered`_).
 
-* Issue and feature tracking is done using GitHub issues in this repo.
+.. _Why choose Apache 2.0 licensing:
+   https://www.zephyrproject.org/about/#faq
 
-* A Continuous Integration (CI) system runs on every Pull Request (PR)
-  to verify several aspects of the PR including Git commit formatting,
-  Coding Style, sanity checks builds, and documentation builds.
+.. _Top 10 Apache License Questions Answered:
+   https://www.whitesourcesoftware.com/whitesource-blog/top-10-apache-license-questions-answered/
 
-* The `Zephyr devel mailing list`_ is a great place to engage with the
-  community, ask questions, discuss issues, and help each other.
+A license tells you what rights you have as a developer, as provided by the
+copyright holder. It is important that the contributor fully understands the
+licensing rights and agrees to them. Sometimes the copyright holder isn't the
+contributor, such as when the contributor is doing work on behalf of a
+company.
+
+Components using other Licenses
+===============================
+
+There are some imported or reused components of the Zephyr project that
+use other licensing, as described in `Zephyr Licensing`_.
+
+.. _Zephyr Licensing:
+   http://docs.zephyrproject.org/LICENSING.html
+
+Importing code into the Zephyr OS from other projects that use a license
+other than the Apache 2.0 license needs to be fully understood in
+context and approved by the Zephyr governing board.
+
+By carefully reviewing potential contributions and also enforcing a
+:ref:`DCO` for contributed code, we can ensure that
+the Zephyr community can develop products with the Zephyr Project
+without concerns over patent or copyright issues.
+
+See `Contributing non-Apache 2.0 components`_ for more information about
+this contributing and review process for imported components.
+
+.. _Contributing non-Apache 2.0 components:
+   http://docs.zephyrproject.org/contribute/contribute_non-apache.html
+
+.. _DCO:
+
+Developer Certification of Origin (DCO)
+***************************************
+
+To make a good faith effort to ensure licensing criteria are met, the Zephyr
+project requires the Developer Certificate of Origin (DCO) process to be
+followed.
+
+The DCO is an attestation attached to every contribution made by every
+developer. In the commit message of the contribution, (described more fully
+later in this document), the developer simply adds a ``Signed-off-by``
+statement and thereby agrees to the DCO.
+
+When a developer submits a patch, it is a commitment that the contributor has
+the right to submit the patch per the license.  The DCO agreement is shown
+below and at http://developercertificate.org/.
+
+.. code-block:: none
+
+    Developer's Certificate of Origin 1.1
+
+    By making a contribution to this project, I certify that:
+
+    (a) The contribution was created in whole or in part by me and I
+        have the right to submit it under the open source license
+        indicated in the file; or
+
+    (b) The contribution is based upon previous work that, to the
+        best of my knowledge, is covered under an appropriate open
+        source license and I have the right under that license to
+        submit that work with modifications, whether created in whole
+        or in part by me, under the same open source license (unless
+        I am permitted to submit under a different license), as
+        Indicated in the file; or
+
+    (c) The contribution was provided directly to me by some other
+        person who certified (a), (b) or (c) and I have not modified
+        it.
+
+    (d) I understand and agree that this project and the contribution
+        are public and that a record of the contribution (including
+        all personal information I submit with it, including my
+        sign-off) is maintained indefinitely and may be redistributed
+        consistent with this project or the open source license(s)
+        involved.
+
+DCO Sign-Off Methods
+====================
+
+The DCO requires a sign-off message in the following format appear on each
+commit in the pull request::
+
+   Signed-off-by: Zephyrus Zephyr <zephyrus@zephyrproject.org>
+
+The DCO text can either be manually added to your commit body, or you can add
+either ``-s`` or ``--signoff`` to your usual Git commit commands. If you forget
+to add the sign-off you can also amend a previous commit with the sign-off by
+running ``git commit --amend -s``. If you've pushed your changes to GitHub
+already you'll need to force push your branch after this with ``git push -f``.
+
+Prerequisites
+*************
+
+.. _Zephyr Project website: https://zephyrproject.org
+
+As a contributor, you'll want to be familiar with the Zephyr project, how to
+configure, install, and use it as explained in the `Zephyr Project website`_
+and how to set up your development environment as introduced in the Zephyr
+`Getting Started Guide`_.
+
+.. _Getting Started Guide:
+   http://docs.zephyrproject.org/getting_started/getting_started.html
+
+You should be familiar with common developer tools such as Git and CMake, and
+platforms such as GitHub.
+
+If you haven't already done so, you'll need to create a (free) GitHub account
+on http://github.com and have Git tools available on your development system.
+
+.. note::
+   The Zephyr development workflow supports all 3 major operating systems
+   (Linux, macOS, and Windows) but some of the tools used in the sections below
+   are only available on Linux and macOS. On Windows, instead of running these
+   tools yourself, you will need to rely on the Continuous Integration (CI)
+   service ``shippable``, which runs automatically on GitHub when you submit
+   your Pull Request (PR).  You can see any failure results in the Shippable
+   details link near the end of the PR conversation list. See
+   `Continuous Integration`_ for more information
+
+Repository layout
+*****************
+
+To clone the main Zephyr Project repository use::
+
+    git clone https://github.com/zephyrproject-rtos/zephyr
+
+The Zephyr project directory structure is described in `Source Tree Structure`_
+documentation. In addition to the Zephyr kernel itself, you'll also find the
+sources for technical documentation, sample code, supported board
+configurations, and a collection of subsystem tests.  All of these are
+available for developers to contribute to and enhance.
+
+.. _Source Tree Structure:
+   http://docs.zephyrproject.org/kernel/overview/source_tree.html
+
+Pull Requests and Issues
+************************
+
+.. _Zephyr Project Issues: https://github.com/zephyrproject-rtos/zephyr/issues
+
+.. _open pull requests: https://github.com/zephyrproject-rtos/zephyr/pulls
 
 .. _Zephyr devel mailing list: https://lists.zephyrproject.org/g/devel
+
+Before starting on a patch, first check in our issues `Zephyr Project Issues`_
+system to see what's been reported on the issue you'd like to address.  Have a
+conversation on the `Zephyr devel mailing list`_ (or the #zephyrproject IRC
+channel on freenode.net) to see what others think of your issue (and proposed
+solution).  You may find others that have encountered the issue you're
+finding, or that have similar ideas for changes or additions.  Send a message
+to the `Zephyr devel mailing list`_ to introduce and discuss your idea with
+the development community.
+
+Please note that it's common practice on IRC to be away from the
+channel, but still have a client logged in to receive traffic. If you
+ask a question to a particular person and they don't answer, **try
+to stay signed in to the channel** if you can, so they have time to
+respond to you. This is especially important given the many different
+timezones Zephyr developers live in. If you don't get a timely
+response on IRC, try sending a message to the mailing list instead.
+
+It's always a good practice to search for existing or related issues before
+submitting your own. When you submit an issue (bug or feature request), the
+triage team will review and comment on the submission, typically within a few
+business days.
+
+You can find all `open pull requests`_ on GitHub and open `Zephyr Project
+Issues`_ in Github issues.
+
+ .. _Continuous Integration:
+
+Continuous Integration (CI)
+***************************
+
+The Zephyr Project operates a Continuous Integration (CI) system that runs on
+every Pull Request (PR) in order to verify several aspects of the PR:
+
+* Git commit formatting
+* Coding Style
+* Sanity Check builds for multiple architectures and boards
+* Documentation build to verify any doc changes
+
+CI is run on the ``shippable`` cloud service and it uses the same tools
+described in the `Contribution Tools`_ section.
+The CI results must be green indicating "All checks have passed" before
+the Pull Request can be merged.  CI is run when the PR is created, and
+again every time the PR is modified with a commit.
+
+.. note::
+
+   You can also force
+   the CI system to recheck a PR by adding a comment to the PR saying
+   simply ``recheck`` in the message (helpful if the CI system fails
+   unexpectedly).
+
+The current status of the CI run can always be found at the bottom of the
+GitHub PR page, below the review status. Depending on the success or failure
+of the run you will see:
+
+* "All checks have passed"
+* "All checks have failed"
+
+In case of failure you can click on the "Details" link presented below the
+failure message in order to navigate to ``shippable`` and inspect the results.
+Once you click on the link you will be taken to the ``shippable`` summary
+results page where a table with all the different builds will be shown. To see
+what build or test failed click on the row that contains the failed (i.e.
+non-green) build and then click on the "Tests" tab to see the console output
+messages indicating the failure.
+
+ .. _Contribution Tools:
+
+Contribution Tools and Git Setup
+********************************
+
+Signed-off-by
+=============
+
+The name in the commit message ``Signed-off-by:`` line and your email must
+match the change authorship information. Make sure your :file:`.gitconfig`
+is set up correctly:
+
+.. code-block:: console
+
+   git config --global user.name "David Developer"
+   git config --global user.email "david.developer@company.com"
+
+gitlint
+=======
+
+When you submit a pull request to the project, a series of checks are
+performed to verify your commit messages meet the requirements. The same step
+done during the CI process can be performed locally using the the `gitlint`
+command.
+
+Run `gitlint` locally in your tree and branch where your patches have been
+committed:
+
+.. code-block:: console
+
+     gitlint
+
+Note, gitlint only checks HEAD (the most recent commit), so you should run it
+after each commit, or use the ``--commits`` option to specify a commit range
+covering all the development patches to be submitted.
+
+sanitycheck
+===========
+
+.. note::
+   sanitycheck does not currently run on Windows.
+
+To verify that your changes did not break any tests or samples, please run the
+``sanitycheck`` script locally before submitting your pull request to GitHub. To
+run the same tests the CI system runs, follow these steps from within your
+local Zephyr source working directory:
+
+.. code-block:: console
+
+    source zephyr-env.sh
+    ./scripts/sanitycheck
+
+The above will execute the basic sanitycheck script, which will run various
+kernel tests using the QEMU emulator.  It will also do some build tests on
+various samples with advanced features that can't run in QEMU.
+
+We highly recommend you run these tests locally to avoid any CI
+failures.
+
+uncrustify
+==========
+
+The `uncrustify tool <https://sourceforge.net/projects/uncrustify>`_ can
+be helpful to quickly reformat your source code to our `Coding Style`_
+standards together with a configuration file we've provided:
+
+.. code-block:: bash
+
+   # On Linux/macOS
+   uncrustify --replace --no-backup -l C -c $ZEPHYR_BASE/.uncrustify.cfg my_source_file.c
+   # On Windows
+   uncrustify --replace --no-backup -l C -c %ZEPHYR_BASE%\.uncrustify.cfg my_source_file.c
+
+On Linux systems, you can install uncrustify with
+
+.. code-block:: bash
+
+   sudo apt install uncrustify
+
+For Windows installation instructions see the `sourceforge listing for
+uncrustify <https://sourceforge.net/projects/uncrustify>`_.
+
+Coding Style
+************
+
+Use these coding guidelines to ensure that your development complies with the
+project's style and naming conventions.
+
+.. _Linux kernel coding style:
+   https://kernel.org/doc/html/latest/process/coding-style.html
+
+In general, follow the `Linux kernel coding style`_, with the
+following exceptions:
+
+* Add braces to every ``if`` and ``else`` body, even for single-line code
+  blocks. Use the ``--ignore BRACES`` flag to make *checkpatch* stop
+  complaining.
+* Use spaces instead of tabs to align comments after declarations, as needed.
+* Use C89-style single line comments, ``/*  */``. The C99-style single line
+  comment, ``//``, is not allowed.
+* Use ``/**  */`` for doxygen comments that need to appear in the documentation.
+
+
+The Linux kernel GPL-licensed tool ``checkpatch`` is used to check
+coding style conformity.
+
+.. note::
+   checkpatch does not currently run on Windows.
+
+Checkpatch is available in the scripts directory. To invoke it when committing
+code, make the file *$ZEPHYR_BASE/.git/hooks/pre-commit* executable and edit
+it to contain:
+
+.. code-block:: bash
+
+    #!/bin/sh
+    set -e exec
+    exec git diff --cached | ${ZEPHYR_BASE}/scripts/checkpatch.pl -
+
+.. _Contribution workflow:
+
+Contribution Workflow
+*********************
+
+One general practice we encourage, is to make small,
+controlled changes. This practice simplifies review, makes merging and
+rebasing easier, and keeps the change history clear and clean.
+
+When contributing to the Zephyr Project, it is also important you provide as much
+information as you can about your change, update appropriate documentation,
+and test your changes thoroughly before submitting.
+
+The general GitHub workflow used by Zephyr developers uses a combination of
+command line Git commands and browser interaction with GitHub.  As it is with
+Git, there are multiple ways of getting a task done.  We'll describe a typical
+workflow here:
+
+.. _Create a Fork of Zephyr:
+   https://github.com/zephyrproject-rtos/zephyr#fork-destination-box
+
+#. `Create a Fork of Zephyr`_
+   to your personal account on GitHub. (Click on the fork button in the top
+   right corner of the Zephyr project repo page in GitHub.)
+
+#. On your development computer, clone the fork you just made::
+
+     git clone https://github.com/<your github id>/zephyr
+
+   This would be a good time to let Git know about the upstream repo too::
+
+     git remote add upstream https://github.com/zephyrproject-rtos/zephyr.git
+
+   and verify the remote repos::
+
+     git remote -v
+
+#. Create a topic branch (off of master) for your work (if you're addressing
+   an issue, we suggest including the issue number in the branch name)::
+
+     git checkout master
+     git checkout -b fix_comment_typo
+
+   Some Zephyr subsystems do development work on a separate branch from
+   master so you may need to indicate this in your checkout::
+
+     git checkout -b fix_out_of_date_patch origin/net
+
+#. Make changes, test locally, change, test, test again, ...  (Check out the
+   prior chapter on `sanitycheck`_ as well).
+
+#. When things look good, start the pull request process by adding your changed
+   files::
+
+     git add [file(s) that changed, add -p if you want to be more specific]
+
+   You can see files that are not yet staged using::
+
+     git status
+
+#. Verify changes to be committed look as you expected::
+
+     git diff --cached
+
+#. Commit your changes to your local repo::
+
+     git commit -s
+
+   The ``-s`` option automatically adds your ``Signed-off-by:`` to your commit
+   message.  Your commit will be rejected without this line that indicates your
+   agreement with the `DCO`_.  See the `Commit Guidelines`_ section for
+   specific guidelines for writing your commit messages.
+
+#. Push your topic branch with your changes to your fork in your personal
+   GitHub account::
+
+     git push origin fix_comment_typo
+
+#. In your web browser, go to your forked repo and click on the
+   ``Compare & pull request`` button for the branch you just worked on and
+   you want to open a pull request with.
+
+#. Review the pull request changes, and verify that you are opening a
+   pull request for the appropriate branch. The title and message from your
+   commit message should appear as well.
+
+#. If you're working on a subsystem branch that's not ``master``,
+   you may need to change the intended branch for the pull request
+   here, for example, by changing the base branch from ``master`` to ``net``.
+
+#. GitHub will assign one or more suggested reviewers (based on the
+   CODEOWNERS file in the repo). If you are a project member, you can
+   select additional reviewers now too.
+
+#. Click on the submit button and your pull request is sent and awaits
+   review.  Email will be sent as review comments are made, or you can check
+   on your pull request at https://github.com/zephyrproject-rtos/zephyr/pulls.
+
+#. While you're waiting for your pull request to be accepted and merged, you
+   can create another branch to work on another issue. (Be sure to make your
+   new branch off of master and not the previous branch.)::
+
+     git checkout master
+     git checkout -b fix_another_issue
+
+   and use the same process described above to work on this new topic branch.
+
+#. If reviewers do request changes to your patch, you can interactively rebase
+   commit(s) to fix review issues.  In your development repo::
+
+     git fetch --all
+     git rebase --ignore-whitespace upstream/master
+
+   The ``--ignore-whitespace`` option stops ``git apply`` (called by rebase)
+   from changing any whitespace. Continuing::
+
+     git rebase -i <offending-commit-id>^
+
+   In the interactive rebase editor, replace ``pick`` with ``edit`` to select
+   a specific commit (if there's more than one in your pull request), or
+   remove the line to delete a commit entirely.  Then edit files to fix the
+   issues in the review.
+
+   As before, inspect and test your changes. When ready, continue the
+   patch submission::
+
+     git add [file(s)]
+     git rebase --continue
+
+   Update commit comment if needed, and continue::
+
+     git push --force origin fix_comment_typo
+
+   By force pushing your update, your original pull request will be updated
+   with your changes so you won't need to resubmit the pull request.
+
+#. If the CI run fails, you will need to make changes to your code in order
+   to fix the issues and amend your commits by rebasing as described above.
+   Additional information about the CI system can be found in
+   `Continuous Integration`_.
+
+Commit Guidelines
+*****************
+
+Changes are submitted as Git commits. Each commit message must contain:
+
+* A short and descriptive subject line that is less than 72 characters,
+  followed by a blank line. The subject line must include a prefix that
+  identifies the subsystem being changed, followed by a colon, and a short
+  title, for example:  ``doc: update wiki references to new site``.
+  (If you're updating an existing file, you can use
+  ``git log <filename>`` to see what developers used as the prefix for
+  previous patches of this file.)
+
+* A change description with your logic or reasoning for the changes, followed
+  by a blank line.
+
+* A Signed-off-by line, ``Signed-off-by: <name> <email>`` typically added
+  automatically by using ``git commit -s``
+
+* If the change addresses an issue, include a line of the form::
+
+      Fixes #<issue number>.
+
+
+All changes and topics sent to GitHub must be well-formed, as described above.
+
+Commit Message Body
+===================
+
+When editing the commit message, please briefly explain what your change
+does and why it's needed. A change summary of ``"Fixes stuff"`` will be rejected.
+
+.. warning::
+   An empty change summary body is not permitted. Even for trivial changes, please
+   include a summary body in the commmit message.
+
+The description body of the commit message must include:
+
+* **what** the change does,
+* **why** you chose that approach,
+* **what** assumptions were made, and
+* **how** you know it works -- for example, which tests you ran.
+
+For examples of accepted commit messages, you can refer to the Zephyr GitHub
+`changelog <https://github.com/zephyrproject-rtos/zephyr/commits/master>`__.
+
+Other Commit Expectations
+=========================
+
+* Commits must build cleanly when applied on top of each other, thus avoiding
+  breaking bisectability.
+
+* Commits must pass all CI checks (see `Continuous Integration`_ for more
+  information)
+
+* Each commit must address a single identifiable issue and must be
+  logically self-contained. Unrelated changes should be submitted as
+  separate commits.
+
+* You may submit pull request RFCs (requests for comments) to send work
+  proposals, progress snapshots of your work, or to get early feedback on
+  features or changes that will affect multiple areas in the code base.
+
+* When major new functionality is added, tests for the new functionality MUST be
+  added to the automated test suite. All new APIs MUST be documented and tested
+  and tests MUST cover at least 80% of the added functionality using the code
+  coverage tool and reporting provided by the project.
+
+Submitting Proposals
+====================
+
+You can request a new feature or submit a proposal by submitting an issue to
+our GitHub Repository.
+If you would like to implement a new feature, please submit an issue with a
+proposal (RFC) for your work first, to be sure that we can use it. Please
+consider what kind of change it is:
+
+* For a Major Feature, first open an issue and outline your proposal so that it
+  can be discussed. This will also allow us to better coordinate our efforts,
+  prevent duplication of work, and help you to craft the change so that it is
+  successfully accepted into the project. Providing the following information
+  will increase the chances of your issue being dealt with quickly:
+
+  * Overview of the Proposal
+  * Motivation for or Use Case
+  * Design Details
+  * Alternatives
+  * Test Strategy
+
+* Small Features can be crafted and directly submitted as a Pull Request.
+
+Identifying Contribution Origin
+===============================
+
+When adding a new file to the tree, it is important to detail the source of
+origin on the file, provide attributions, and detail the intended usage. In
+cases where the file is an original to Zephyr, the commit message should
+include the following ("Original" is the assumption if no Origin tag is
+present)::
+
+    Origin: Original
+
+In cases where the file is imported from an external project, the commit
+message shall contain details regarding the original project, the location of
+the project, the SHA-id of the origin commit for the file, the intended
+purpose, and if the file will be maintained by the Zephyr project,
+(whether or not the Zephyr project will contain a localized branch or if
+it is a downstream copy).
+
+For example, a copy of a locally maintained import::
+
+    Origin: Contiki OS
+    License: BSD 3-Clause
+    URL: http://www.contiki-os.org/
+    commit: 853207acfdc6549b10eb3e44504b1a75ae1ad63a
+    Purpose: Introduction of networking stack.
+    Maintained-by: Zephyr
+
+For example, a copy of an externally maintained import::
+
+    Origin: Tiny Crypt
+    License: BSD 3-Clause
+    URL: https://github.com/01org/tinycrypt
+    commit: 08ded7f21529c39e5133688ffb93a9d0c94e5c6e
+    Purpose: Introduction of TinyCrypt
+    Maintained-by: External

Kconfig

@@ -1,8 +1,10 @@
-# General configuration options
+# Kconfig - general configuration options
 
+#
 # Copyright (c) 2014-2015 Wind River Systems, Inc.
+#
 # SPDX-License-Identifier: Apache-2.0
-
+#
 mainmenu "Zephyr Kernel Configuration"
 
 source "Kconfig.zephyr"

Kconfig.zephyr

@@ -1,913 +1,39 @@
-# General configuration options
+# Kconfig - general configuration options
 
+#
 # Copyright (c) 2014-2015 Wind River Systems, Inc.
 # Copyright (c) 2016 Intel Corporation
-# Copyright (c) 2023 Nordic Semiconductor ASA
+#
 # SPDX-License-Identifier: Apache-2.0
-
-osource "${APPLICATION_SOURCE_DIR}/VERSION"
-
-# Include Kconfig.defconfig files first so that they can override defaults and
-# other symbol/choice properties by adding extra symbol/choice definitions.
-# After merging all definitions for a symbol/choice, Kconfig picks the first
-# property (e.g. the first default) with a satisfied condition.
 #
-# Shield defaults should have precedence over board defaults, which should have
-# precedence over SoC defaults, so include them in that order.
-#
-# $ARCH and $BOARD_DIR will be glob patterns when building documentation.
-# This loads custom shields defconfigs (from BOARD_ROOT)
-osource "$(KCONFIG_BINARY_DIR)/Kconfig.shield.defconfig"
-# This loads Zephyr base shield defconfigs
-source "boards/shields/*/Kconfig.defconfig"
 
-source "$(BOARD_DIR)/Kconfig.defconfig"
+source "arch/Kconfig"
 
-# This loads custom SoC root defconfigs
-osource "$(KCONFIG_BINARY_DIR)/Kconfig.soc.defconfig"
-# This loads Zephyr base SoC root defconfigs
-osource "soc/$(ARCH)/*/Kconfig.defconfig"
-# This loads the toolchain defconfigs
-osource "$(TOOLCHAIN_KCONFIG_DIR)/Kconfig.defconfig"
-# This loads the testsuite defconfig
-source "subsys/testsuite/Kconfig.defconfig"
+source "kernel/Kconfig"
 
-# This should be early since the autogen Kconfig.dts symbols may get
-# used by modules
 source "dts/Kconfig"
 
-menu "Modules"
-
-source "modules/Kconfig"
-
-endmenu
-
-source "boards/Kconfig"
-source "soc/Kconfig"
-source "arch/Kconfig"
-source "kernel/Kconfig"
 source "drivers/Kconfig"
+
+source "misc/Kconfig"
+
 source "lib/Kconfig"
+
 source "subsys/Kconfig"
 
-osource "$(TOOLCHAIN_KCONFIG_DIR)/Kconfig"
+source "ext/Kconfig"
 
-menu "Build and Link Features"
+source "tests/Kconfig"
 
-menu "Linker Options"
+#
+# The following are for Kconfig files for default values only.
+# These should be parsed at the end.
+#
+# Board defaults should be parsed after SoC defaults
+# because board usually overrides SoC values.
+#
 
-choice LINKER_ORPHAN_CONFIGURATION
-	prompt "Linker Orphan Section Handling"
-	default LINKER_ORPHAN_SECTION_WARN
+# $ENV_VAR_ARCH and $ENV_VAR_BOARD_DIR might be glob patterns
 
-config LINKER_ORPHAN_SECTION_PLACE
-	bool "Place"
-	help
-	  Linker puts orphan sections in place without warnings
-	  or errors.
-
-config LINKER_ORPHAN_SECTION_WARN
-	bool "Warn"
-	help
-	  Linker places the orphan sections in output and issues
-	  warning about those sections.
-
-config LINKER_ORPHAN_SECTION_ERROR
-	bool "Error"
-	help
-	  Linker exits with error when an orphan section is found.
-
-endchoice
-
-config HAS_FLASH_LOAD_OFFSET
-	bool
-	help
-	  This option is selected by targets having a FLASH_LOAD_OFFSET
-	  and FLASH_LOAD_SIZE.
-
-if HAS_FLASH_LOAD_OFFSET
-
-config USE_DT_CODE_PARTITION
-	bool "Link application into /chosen/zephyr,code-partition from devicetree"
-	help
-	  When enabled, the application will be linked into the flash partition
-	  selected by the zephyr,code-partition property in /chosen in devicetree.
-	  When this is disabled, the flash load offset and size can be set manually
-	  below.
-
-# Workaround for not being able to have commas in macro arguments
-DT_CHOSEN_Z_CODE_PARTITION := zephyr,code-partition
-
-config FLASH_LOAD_OFFSET
-	# Only user-configurable when USE_DT_CODE_PARTITION is disabled
-	hex "Kernel load offset" if !USE_DT_CODE_PARTITION
-	default $(dt_chosen_reg_addr_hex,$(DT_CHOSEN_Z_CODE_PARTITION)) if USE_DT_CODE_PARTITION
-	default 0
-	help
-	  This option specifies the byte offset from the beginning of flash that
-	  the kernel should be loaded into. Changing this value from zero will
-	  affect the Zephyr image's link, and will decrease the total amount of
-	  flash available for use by application code.
-
-	  If unsure, leave at the default value 0.
-
-config FLASH_LOAD_SIZE
-	# Only user-configurable when USE_DT_CODE_PARTITION is disabled
-	hex "Kernel load size" if !USE_DT_CODE_PARTITION
-	default $(dt_chosen_reg_size_hex,$(DT_CHOSEN_Z_CODE_PARTITION)) if USE_DT_CODE_PARTITION
-	default 0
-	help
-	  If non-zero, this option specifies the size, in bytes, of the flash
-	  area that the Zephyr image will be allowed to occupy.  If zero, the
-	  image will be able to occupy from the FLASH_LOAD_OFFSET to the end of
-	  the device.
-
-	  If unsure, leave at the default value 0.
-
-endif # HAS_FLASH_LOAD_OFFSET
-
-config ROM_START_OFFSET
-	hex
-	prompt "ROM start offset" if !BOOTLOADER_MCUBOOT
-	default 0x200 if BOOTLOADER_MCUBOOT
-	default 0
-	help
-	  If the application is built for chain-loading by a bootloader this
-	  variable is required to be set to value that leaves sufficient
-	  space between the beginning of the image and the start of the first
-	  section to store an image header or any other metadata.
-	  In the particular case of the MCUboot bootloader this reserves enough
-	  space to store the image header, which should also meet vector table
-	  alignment requirements on most ARM targets, although some targets
-	  may require smaller or larger values.
-
-config LD_LINKER_SCRIPT_SUPPORTED
-	bool
-	default y
-
-choice LINKER_SCRIPT
-	prompt "Linker script"
-	default LD_LINKER_TEMPLATE if LD_LINKER_SCRIPT_SUPPORTED
-
-config LD_LINKER_TEMPLATE
-	bool "LD template"
-	depends on LD_LINKER_SCRIPT_SUPPORTED
-	help
-	  Select this option to use the LD linker script templates.
-	  The templates are pre-processed by the C pre-processor to create the
-	  final LD linker script.
-
-config CMAKE_LINKER_GENERATOR
-	bool "CMake generator"
-	depends on ARM
-	help
-	  Select this option to use the Zephyr CMake linker script generator.
-	  The linker configuration is written in CMake and the final linker
-	  script will be generated by the toolchain specific linker generator.
-	  For LD based linkers, this will be the ld generator, for ARMClang /
-	  armlink based linkers it will be the scatter generator.
-
-endchoice
-
-config HAVE_CUSTOM_LINKER_SCRIPT
-	bool "Custom linker script provided"
-	help
-	  Set this option if you have a custom linker script which needed to
-	  be define in CUSTOM_LINKER_SCRIPT.
-
-config CUSTOM_LINKER_SCRIPT
-	string "Path to custom linker script"
-	depends on HAVE_CUSTOM_LINKER_SCRIPT
-	help
-	  Path to the linker script to be used instead of the one define by the
-	  board.
-
-	  The linker script must be based on a version provided by Zephyr since
-	  the kernel can expect a certain layout/certain regions.
-
-	  This is useful when an application needs to add sections into the
-	  linker script and avoid having to change the script provided by
-	  Zephyr.
-
-config KERNEL_ENTRY
-	string "Kernel entry symbol"
-	default "__start"
-	help
-	  Code entry symbol, to be set at linking phase.
-
-config LINKER_SORT_BY_ALIGNMENT
-	bool "Sort input sections by alignment"
-	default y
-	help
-	  This turns on the linker flag to sort sections by alignment
-	  in decreasing size of symbols. This helps to minimize
-	  padding between symbols.
-
-config SRAM_VECTOR_TABLE
-	bool "Place the vector table in SRAM instead of flash"
-	help
-	  The option specifies that the vector table should be placed at the
-	  start of SRAM instead of the start of flash.
-
-config HAS_SRAM_OFFSET
-	bool
-	help
-	  This option is selected by targets that require SRAM_OFFSET.
-
-config SRAM_OFFSET
-	hex "Kernel SRAM offset" if HAS_SRAM_OFFSET
-	default 0
-	help
-	  This option specifies the byte offset from the beginning of SRAM
-	  where the kernel begins. Changing this value from zero will affect
-	  the Zephyr image's link, and will decrease the total amount of
-	  SRAM available for use by application code.
-
-	  If unsure, leave at the default value 0.
-
-menu "Linker Sections"
-
-config LINKER_USE_BOOT_SECTION
-	bool "Use Boot Linker Section"
-	help
-	  If enabled, the symbols which are needed for the boot process
-	  will be put into another linker section reserved for these
-	  symbols.
-
-	  Requires that boot sections exist in the architecture, SoC,
-	  board or custom linker script.
-
-config LINKER_USE_PINNED_SECTION
-	bool "Use Pinned Linker Section"
-	help
-	  If enabled, the symbols which need to be pinned in memory
-	  will be put into another linker section reserved for pinned
-	  symbols. During boot, the corresponding memory will be marked
-	  as pinned.
-
-	  Requires that pinned sections exist in the architecture, SoC,
-	  board or custom linker script.
-
-config LINKER_GENERIC_SECTIONS_PRESENT_AT_BOOT
-	bool "Generic sections are present at boot" if DEMAND_PAGING && LINKER_USE_PINNED_SECTION
-	default y
-	help
-	  When disabled, the linker sections other than the boot and
-	  pinned sections will be marked as not present in the page
-	  tables. This allows kernel to pull in data pages on demand
-	  as required by current execution context when demand paging
-	  is enabled. There is no need to load all code and data into
-	  memory at once.
-
-	  If unsure, say Y.
-
-config LINKER_LAST_SECTION_ID
-	bool "Last section identifier"
-	default y
-	depends on ARM || ARM64 || RISCV
-	help
-	  If enabled, the last section will contain an identifier.
-	  This ensures that the '_flash_used' linker symbol will always be
-	  correctly calculated, even in cases where the location counter may
-	  have been incremented for alignment purposes but no data is placed
-	  after alignment.
-
-	  Note: in cases where the flash is fully used, for example application
-	  specific data is written at the end of the flash area, then writing a
-	  last section identifier may cause rom region overflow.
-	  In such cases this setting should be disabled.
-
-config LINKER_LAST_SECTION_ID_PATTERN
-	hex "Last section identifier pattern"
-	default "0xE015E015"
-	depends on LINKER_LAST_SECTION_ID
-	help
-	  Pattern to fill into last section as identifier.
-	  Default pattern is 0xE015 (end of last section), but any pattern can
-	  be used.
-	  The size of the pattern must not exceed 4 bytes.
-
-config LINKER_USE_NO_RELAX
-	bool
-	help
-	  Hidden symbol to allow features to force the use of no relax.
-
-config LINKER_USE_RELAX
-	bool "Linker optimization of call addressing"
-	depends on !LINKER_USE_NO_RELAX
-	default y
-	help
-	  This option performs global optimizations that become possible when the linker resolves
-	  addressing in the program, such as relaxing address modes and synthesizing new
-	  instructions in the output object file. For ld and lld, this enables `--relax`.
-	  On platforms where this is not supported, `--relax' is accepted, but ignored.
-	  Disabling it can reduce performance, as the linker is no longer able to substiture long /
-	  in-effective jump calls to shorter / more effective instructions.
-
-endmenu # "Linker Sections"
-
-endmenu
-
-menu "Compiler Options"
-
-config CODING_GUIDELINE_CHECK
-	bool "Enforce coding guideline rules"
-	help
-	  Use available compiler flags to check coding guideline rules during
-	  the build.
-
-config NATIVE_BUILD
-	bool
-	select FULL_LIBC_SUPPORTED
-	select FULL_LIBCPP_SUPPORTED if CPP
-	help
-	  Zephyr will be built targeting the host system for debug and
-	  development purposes.
-
-config NATIVE_APPLICATION
-	bool
-	default y if ARCH_POSIX
-	depends on !NATIVE_LIBRARY
-	select NATIVE_BUILD
-	help
-	  Build as a native application that can run on the host and using
-	  resources and libraries provided by the host.
-
-config NATIVE_LIBRARY
-	bool
-	select NATIVE_BUILD
-	help
-	  Build as a prelinked library for the native host target.
-	  This library can later be built into an executable for the host.
-
-config COMPILER_FREESTANDING
-	bool "Build in a freestanding compiler mode"
-	help
-	  Configure the compiler to operate in freestanding mode according to
-	  the C and C++ language specifications. Freestanding mode reduces the
-	  requirements of the compiler and language environment, which can
-	  negatively impact the ability for the compiler to detect errors and
-	  perform optimizations.
-
-choice COMPILER_OPTIMIZATIONS
-	prompt "Optimization level"
-	default NO_OPTIMIZATIONS    if COVERAGE
-	default DEBUG_OPTIMIZATIONS if DEBUG
-	default SIZE_OPTIMIZATIONS
-	help
-	  Note that these flags shall only control the compiler
-	  optimization level, and that no extra debug code shall be
-	  conditionally compiled based on them.
-
-config SIZE_OPTIMIZATIONS
-	bool "Optimize for size"
-	help
-	  Compiler optimizations will be set to -Os independently of other
-	  options.
-
-config SPEED_OPTIMIZATIONS
-	bool "Optimize for speed"
-	help
-	  Compiler optimizations will be set to -O2 independently of other
-	  options.
-
-config DEBUG_OPTIMIZATIONS
-	bool "Optimize debugging experience"
-	help
-	  Compiler optimizations will be set to -Og independently of other
-	  options.
-
-config NO_OPTIMIZATIONS
-	bool "Optimize nothing"
-	help
-	  Compiler optimizations will be set to -O0 independently of other
-	  options.
-
-	  Selecting this option will likely require manual tuning of the
-	  default stack sizes in order to avoid stack overflows.
-endchoice
-
-config COMPILER_WARNINGS_AS_ERRORS
-	bool "Treat warnings as errors"
-	help
-	  Turn on "warning as error" toolchain flags
-
-config COMPILER_SAVE_TEMPS
-	bool "Save temporary object files"
-	help
-	  Instruct the compiler to save the temporary intermediate files
-	  permanently. These can be useful for troubleshooting build issues.
-
-config COMPILER_TRACK_MACRO_EXPANSION
-	bool "Track macro expansion"
-	default y
-	help
-	  When enabled, locations of tokens across macro expansions will be
-	  tracked. Disabling this option may be useful to debug long macro
-	  expansion chains.
-
-config COMPILER_COLOR_DIAGNOSTICS
-	bool "Colored diagnostics"
-	default y
-	help
-	  Compiler diagnostic messages are colorized.
-
-choice COMPILER_SECURITY_FORTIFY
-	prompt "Detect buffer overflows in libc calls"
-	default FORTIFY_SOURCE_NONE if NO_OPTIMIZATIONS || MINIMAL_LIBC || NATIVE_BUILD
-	default FORTIFY_SOURCE_COMPILE_TIME
-	help
-	  Buffer overflow checking in libc calls. Supported by Clang and
-	  GCC when using Picolibc or Newlib. Requires compiler optimization
-	  to be enabled.
-
-config FORTIFY_SOURCE_NONE
-	bool "No detection"
-	help
-	  Disables both compile-time and run-time checking.
-
-config FORTIFY_SOURCE_COMPILE_TIME
-	bool "Compile-time detection"
-	help
-	  Enables only compile-time checking. Compile-time checking
-	  doesn't increase executable size or reduce performance, it
-	  limits checking to what can be done with information available
-	  at compile time.
-
-config FORTIFY_SOURCE_RUN_TIME
-	bool "Compile-time and run-time detection"
-	help
-	  Enables both compile-time and run-time checking. Run-time
-	  checking increases coverage at the expense of additional code,
-	  and means that applications will raise a runtime exception
-	  when buffer overflow is detected.
-
-endchoice
-
-config COMPILER_OPT
-	string "Custom compiler options"
-	help
-	  This option is a free-form string that is passed to the compiler
-	  when building all parts of a project (i.e. kernel).
-	  The compiler options specified by this string supplement the
-	  predefined set of compiler supplied by the build system,
-	  and can be used to change compiler optimization, warning and error
-	  messages, and so on.
-
-config MISRA_SANE
-	bool "MISRA standards compliance features"
-	help
-	  Causes the source code to build in "MISRA" mode, which
-	  disallows some otherwise-permitted features of the C
-	  standard for safety reasons.  Specifically variable length
-	  arrays are not permitted (and gcc will enforce this).
-
-endmenu
-
-choice
-	prompt "Error checking behavior for CHECK macro"
-	default RUNTIME_ERROR_CHECKS
-
-config ASSERT_ON_ERRORS
-	bool "Assert on all errors"
-	help
-	  Assert on errors covered with the CHECK macro.
-
-config NO_RUNTIME_CHECKS
-	bool "No runtime error checks"
-	help
-	  Do not do any runtime checks or asserts when using the CHECK macro.
-
-config RUNTIME_ERROR_CHECKS
-	bool "Runtime error checks"
-	help
-	  Always perform runtime checks covered with the CHECK macro. This
-	  option is the default and the only option used during testing.
-
-endchoice
-
-menu "Build Options"
-
-config KERNEL_BIN_NAME
-	string "The kernel binary name"
-	default "zephyr"
-	help
-	  This option sets the name of the generated kernel binary.
-
-config OUTPUT_STAT
-	bool "Create a statistics file"
-	default y
-	help
-	  Create a stat file using readelf -e <elf>
-
-config OUTPUT_SYMBOLS
-	bool "Create a symbol file"
-	help
-	  Create a symbol file using nm <elf>
-
-config OUTPUT_DISASSEMBLY
-	bool "Create a disassembly file"
-	help
-	  Create an .lst file with the assembly listing of the firmware.
-
-config OUTPUT_DISASSEMBLE_ALL
-	bool "Disassemble all sections with source. Fill zeros."
-	default n
-	depends on OUTPUT_DISASSEMBLY
-	help
-	  The .lst file will contain complete disassembly of the firmware
-	  not just those expected to contain instructions including zeros
-
-config OUTPUT_PRINT_MEMORY_USAGE
-	bool "Print memory usage to stdout"
-	default y
-	help
-	  If the toolchain supports it, this option will pass
-	  --print-memory-region to the linker when it is doing it's first
-	  linker pass. Note that the memory regions are symbolic concepts
-	  defined by the linker scripts and do not necessarily map
-	  directly to the real physical address space. Take also note that
-	  some platforms do two passes of the linker so the results do not
-	  match exactly to the final elf file. See also rom_report,
-	  ram_report and
-	  https://sourceware.org/binutils/docs/ld/MEMORY.html
-
-config CLEANUP_INTERMEDIATE_FILES
-	bool "Remove all intermediate files"
-	help
-	  Delete intermediate files to save space and cleanup clutter resulting
-	  from the build process. Note this breaks incremental builds, west spdx
-	  (Software Bill of Material generation), and maybe others.
-
-config BUILD_NO_GAP_FILL
-	bool "Don't fill gaps in generated hex/bin/s19 files."
-
-config BUILD_OUTPUT_HEX
-	bool "Build a binary in HEX format"
-	help
-	  Build an Intel HEX binary zephyr/zephyr.hex in the build directory.
-	  The name of this file can be customized with CONFIG_KERNEL_BIN_NAME.
-
-config BUILD_OUTPUT_BIN
-	bool "Build a binary in BIN format"
-	default y
-	help
-	  Build a "raw" binary zephyr/zephyr.bin in the build directory.
-	  The name of this file can be customized with CONFIG_KERNEL_BIN_NAME.
-
-config BUILD_OUTPUT_EFI
-	bool "Build as an EFI application"
-	default n
-	depends on X86_64
-	help
-	  Build as an EFI application.
-
-	  This works by creating a "zephyr.efi" EFI binary containing a zephyr
-	  image extracted from a built zephyr.elf file.  EFI applications are
-	  relocatable, and cannot be placed at specific locations in memory.
-	  Instead, the stub code will copy the embedded zephyr sections to the
-	  appropriate locations at startup, clear any zero-filled (BSS, etc...)
-	  areas, then jump into the 64 bit entry point.
-
-config BUILD_OUTPUT_EXE
-	bool "Build a binary in ELF format with .exe extension"
-	help
-	  Build an ELF binary that can run in the host system at
-	  zephyr/zephyr.exe in the build directory.
-	  The name of this file can be customized with CONFIG_KERNEL_BIN_NAME.
-
-config BUILD_OUTPUT_S19
-	bool "Build a binary in S19 format"
-	help
-	  Build an S19 binary zephyr/zephyr.s19 in the build directory.
-	  The name of this file can be customized with CONFIG_KERNEL_BIN_NAME.
-
-config BUILD_OUTPUT_UF2
-	bool "Build a binary in UF2 format"
-	depends on BUILD_OUTPUT_BIN
-	help
-	  Build a UF2 binary zephyr/zephyr.uf2 in the build directory.
-	  The name of this file can be customized with CONFIG_KERNEL_BIN_NAME.
-
-if BUILD_OUTPUT_UF2
-
-config BUILD_OUTPUT_UF2_FAMILY_ID
-	string "UF2 device family ID"
-	default "0x1c5f21b0" if SOC_SERIES_ESP32
-	default "0x621e937a" if SOC_NRF52833_QIAA
-	default "0xada52840" if SOC_NRF52840_QIAA
-	default "0x4fb2d5bd" if SOC_SERIES_IMX_RT
-	default "0x2abc77ec" if SOC_SERIES_LPC55XXX
-	default "0xe48bff56" if SOC_SERIES_RP2XXX
-	default "0x68ed2b88" if SOC_SERIES_SAMD21
-	default "0x55114460" if SOC_SERIES_SAMD51
-	default "0x647824b6" if SOC_SERIES_STM32F0X
-	default "0x5d1a0a2e" if SOC_SERIES_STM32F2X
-	default "0x6b846188" if SOC_SERIES_STM32F3X
-	default "0x53b80f00" if SOC_SERIES_STM32F7X
-	default "0x300f5633" if SOC_SERIES_STM32G0X
-	default "0x4c71240a" if SOC_SERIES_STM32G4X
-	default "0x6db66082" if SOC_SERIES_STM32H7X
-	default "0x202e3a91" if SOC_SERIES_STM32L0X
-	default "0x1e1f432d" if SOC_SERIES_STM32L1X
-	default "0x00ff6919" if SOC_SERIES_STM32L4X
-	default "0x04240bdf" if SOC_SERIES_STM32L5X
-	default "0x70d16653" if SOC_SERIES_STM32WBX
-	default "0x5ee21072" if SOC_STM32F103XE
-	default "0x57755a57" if SOC_SERIES_STM32F4X && (!SOC_STM32F407XE) && (!SOC_STM32F407XG)
-	default "0x6d0922fa" if SOC_STM32F407XE
-	default "0x8fb060fe" if SOC_STM32F407XG
-	help
-	  UF2 bootloaders only accept UF2 files with a matching family ID.
-	  This can be either a hex, e.g. 0x68ed2b88, or well-known family
-	  name string. If the SoC in use is known by UF2, the Family ID will
-	  be pre-filled with the known value.
-
-config BUILD_OUTPUT_UF2_USE_FLASH_BASE
-	bool
-	default n
-
-config BUILD_OUTPUT_UF2_USE_FLASH_OFFSET
-	bool
-	default n
-
-endif # BUILD_OUTPUT_UF2
-
-config BUILD_OUTPUT_STRIPPED
-	bool "Build a stripped binary"
-	help
-	  Build a stripped binary zephyr/zephyr.strip in the build directory.
-	  The name of this file can be customized with CONFIG_KERNEL_BIN_NAME.
-
-config BUILD_OUTPUT_ADJUST_LMA
-	string
-	help
-	  This will adjust the LMA address in the final ELF and hex files with
-	  the value provided.
-	  This will not affect the internal address symbols inside the image but
-	  can be useful when adjusting the LMA address for flash tools or multi
-	  stage loaders where a pre-loader may copy image to a second location
-	  before booting a second core.
-	  The value will be evaluated as a math expression, this means that
-	  following are valid expression
-	  - 1024
-	  - 0x1000
-	  - -0x1000
-	  - 0x20000000 - 0x10000000
-	  Note: negative numbers are valid.
-	  To adjust according to a chosen flash partition one can specify a
-	  default as:
-	  DT_CHOSEN_IMAGE_<name> := <name>,<name>-partition
-	  DT_CHOSEN_Z_FLASH := zephyr,flash
-	  config BUILD_OUTPUT_ADJUST_LMA
-	    default "$(dt_chosen_reg_addr_hex,$(DT_CHOSEN_IMAGE_M4))-\
-	             $(dt_chosen_reg_addr_hex,$(DT_CHOSEN_Z_FLASH))"
-
-config BUILD_OUTPUT_INFO_HEADER
-	bool "Create a image information header"
-	help
-	  Create an image information header which will contain image
-	  information from the Zephyr binary.
-	  Example of information contained in the header file:
-	  - Number of segments in the image
-	  - LMA address of each segment
-	  - VMA address of each segment
-	  - Size of each segment
-
-config BUILD_ALIGN_LMA
-	bool "Align LMA in output image"
-	default y if BUILD_OUTPUT_ADJUST_LMA!=""
-	help
-	  Ensure that the LMA for each section in the output image respects
-	  the alignment requirements of that section. This is required for
-	  some tooling, such as objcopy, to be able to adjust the LMA of the
-	  ELF file.
-
-config APPLICATION_DEFINED_SYSCALL
-	bool "Scan application folder for any syscall definition"
-	help
-	  Scan additional folders inside application source folder
-	  for application defined syscalls.
-
-config MAKEFILE_EXPORTS
-	bool "Generate build metadata files named Makefile.exports"
-	help
-	  Generates a file with build information that can be read by
-	  third party Makefile-based build systems.
-
-config BUILD_OUTPUT_META
-	bool "Create a build meta file"
-	help
-	  Create a build meta file in the build directory containing lists of:
-	  - Zephyr: path and revision (if git repo)
-	  - Zephyr modules: name, path, and revision (if git repo)
-	  - West:
-	    - manifest: path and revision
-	    - projects: path and revision
-	  - Workspace:
-	    - dirty: one or more repositories are marked dirty
-	    - extra: extra Zephyr modules are manually included in the build
-	    - off:   the SHA of one or more west projects are not what the manifest
-	             defined when `west update` was run the last time (`manifest-rev`).
-	             The off state is only present if a west workspace is found.
-	  File extension is .meta
-
-config BUILD_OUTPUT_META_STATE_PROPAGATE
-	bool "Propagate module and project state"
-	depends on BUILD_OUTPUT_META
-	help
-	  Propagate to state of each module to the Zephyr revision field.
-	  If west is used the state of each west project is also propagated to
-	  the Zephyr revision field.
-	  West manifest repo revision field will also
-	  be marked with the same state as the Zephyr revision.
-	  The final revision will become: <SHA>-<state1>-<state2>-<state3>...
-	  If no states are appended to the SHA it means the build is of a clean
-	  tree.
-	  - dirty: one or more repositories are marked dirty
-	  - extra: extra Zephyr modules are manually included in the build
-	  - off:   the SHA of one or more west projects are not what the manifest
-	           defined when `west update` was run the last time (`manifest-rev`).
-	           The off state is only present if a west workspace is found.
-
-config BUILD_OUTPUT_STRIP_PATHS
-	bool "Strip absolute paths from binaries"
-	default y
-	help
-	  If the compiler supports it, strip the ${ZEPHYR_BASE} prefix from the
-	  __FILE__ macro used in __ASSERT*, in the
-	  .noinit."/home/joe/zephyr/fu/bar.c" section names and in any
-	  application code.
-	  This saves some memory, stops leaking user locations in binaries, makes
-	  failure logs more deterministic and most importantly makes builds more
-	  deterministic.
-	  Debuggers usually have a path mapping feature to ensure the files are
-	  still found.
-
-config CHECK_INIT_PRIORITIES
-	bool "Build time initialization priorities check"
-	default y
-	depends on !NATIVE_LIBRARY
-	depends on "$(ZEPHYR_TOOLCHAIN_VARIANT)" != "armclang"
-	help
-	  Check the build for initialization priority issues by comparing the
-	  initialization priority in the build with the device dependency
-	  derived from the devicetree definition.
-
-	  Fails the build on priority errors (dependent devices, inverted
-	  priority), see CHECK_INIT_PRIORITIES_FAIL_ON_WARNING to fail on
-	  warnings (dependent devices, same priority) as well.
-
-config CHECK_INIT_PRIORITIES_FAIL_ON_WARNING
-	bool "Fail the build on priority check warnings"
-	depends on CHECK_INIT_PRIORITIES
-	help
-	  Fail the build if the dependency check script identifies any pair of
-	  devices depending on each other but initialized with the same
-	  priority.
-
-config EMIT_ALL_SYSCALLS
-	bool "Emit all possible syscalls in the tree"
-	help
-	  This tells the build system to emit all possible syscalls found
-	  in the tree, instead of only those syscalls associated with enabled
-	  drivers and subsystems.
-
-endmenu
-
-config DEPRECATED
-	bool
-	help
-	  Symbol that must be selected by a feature or module if it is
-	  considered to be deprecated.
-
-config WARN_DEPRECATED
-	bool
-	default y
-	prompt "Warn on deprecated usage"
-	help
-	  Print a warning when the Kconfig tree is parsed if any deprecated
-	  features are enabled.
-
-config EXPERIMENTAL
-	bool
-	help
-	  Symbol that must be selected by a feature if it is considered to be
-	  at an experimental implementation stage.
-
-config WARN_EXPERIMENTAL
-	bool
-	prompt "Warn on experimental usage"
-	help
-	  Print a warning when the Kconfig tree is parsed if any experimental
-	  features are enabled.
-
-config TAINT
-	bool
-	help
-	  Symbol that must be selected by a feature or module if the Zephyr
-	  build is considered tainted.
-
-config ENFORCE_ZEPHYR_STDINT
-	bool
-	prompt "Enforce Zephyr convention for stdint"
-	depends on !ARCH_POSIX
-	default y
-	help
-	  This enforces the Zephyr stdint convention where int32_t = int,
-	  int64_t = long long, and intptr_t = long so that short string
-	  format length modifiers can be used universally across ILP32
-	  and LP64 architectures. Sometimes this is not possible e.g. when
-	  linking against a binary-only C++ library whose type mangling
-	  is incompatible with the Zephyr convention, or if the build
-	  environment doesn't allow such enforcement, in which case this
-	  should be turned off with the caveat that argument type validation
-	  on Zephyr code will be skipped.
-
-endmenu
-
-
-menu "Boot Options"
-
-config IS_BOOTLOADER
-	bool "Act as a bootloader"
-	depends on XIP
-	depends on ARM
-	help
-	  This option indicates that Zephyr will act as a bootloader to execute
-	  a separate Zephyr image payload.
-
-config BOOTLOADER_SRAM_SIZE
-	int "SRAM reserved for bootloader"
-	default 0
-	depends on !XIP || IS_BOOTLOADER
-	depends on ARM || XTENSA
-	help
-	  This option specifies the amount of SRAM (measure in kB) reserved for
-	  a bootloader image, when either:
-	  - the Zephyr image itself is to act as the bootloader, or
-	  - Zephyr is a !XIP image, which implicitly assumes existence of a
-	  bootloader that loads the Zephyr !XIP image onto SRAM.
-
-config BOOTLOADER_ESP_IDF
-	bool "ESP-IDF bootloader support"
-	depends on SOC_FAMILY_ESP32 && !BOOTLOADER_MCUBOOT && !MCUBOOT
-	default	y
-	help
-	  This option will trigger the compilation of the ESP-IDF bootloader
-	  inside the build folder.
-	  At flash time, the bootloader will be flashed with the zephyr image
-
-config BOOTLOADER_BOSSA
-	bool "BOSSA bootloader support"
-	select USE_DT_CODE_PARTITION
-
-	help
-	  Signifies that the target uses a BOSSA compatible bootloader.  If CDC
-	  ACM USB support is also enabled then the board will reboot into the
-	  bootloader automatically when bossac is run.
-
-config BOOTLOADER_BOSSA_DEVICE_NAME
-	string "BOSSA CDC ACM device name"
-	depends on BOOTLOADER_BOSSA && CDC_ACM_DTE_RATE_CALLBACK_SUPPORT
-	default "CDC_ACM_0"
-	help
-	  Sets the CDC ACM port to watch for reboot commands.
-
-choice
-	prompt "BOSSA bootloader variant"
-	depends on BOOTLOADER_BOSSA
-
-config BOOTLOADER_BOSSA_LEGACY
-	bool "Legacy"
-	help
-	  Select the Legacy variant of the BOSSA bootloader.  This is defined
-	  for compatibility mode only.  The recommendation is use newer
-	  versions like Arduino or Adafruit UF2.
-
-config BOOTLOADER_BOSSA_ARDUINO
-	bool "Arduino"
-	help
-	  Select the Arduino variant of the BOSSA bootloader.  Uses 0x07738135
-	  as the magic value to enter the bootloader.
-
-config BOOTLOADER_BOSSA_ADAFRUIT_UF2
-	bool "Adafruit UF2"
-	help
-	  Select the Adafruit UF2 variant of the BOSSA bootloader.  Uses
-	  0xf01669ef as the magic value to enter the bootloader.
-
-endchoice
-
-endmenu
-
-menu "Compatibility"
-
-config COMPAT_INCLUDES
-	bool "Suppress warnings when using header shims"
-	default y
-	help
-	  Suppress any warnings from the pre-processor when including
-	  deprecated header files.
-
-endmenu
+gsource "arch/$ENV_VAR_ARCH/soc/*/Kconfig.defconfig"
+gsource "$ENV_VAR_BOARD_DIR/Kconfig.defconfig"

Makefile

@@ -0,0 +1,17 @@
+#
+# Top level makefile for things not covered by cmake
+#
+
+ifeq ($(VERBOSE),1)
+  Q =
+else
+  Q = @
+endif
+
+MAKEFLAGS += --no-print-directory
+export Q
+
+# Documentation targets
+# ---------------------------------------------------------------------------
+htmldocs:
+	$(Q)$(MAKE) -C doc htmldocs

README.rst

@@ -1,21 +1,12 @@
-.. raw:: html
+Zephyr Project
+##############
 
-   <a href="https://www.zephyrproject.org">
-     <p align="center">
-       <picture>
-         <source media="(prefers-color-scheme: dark)" srcset="doc/_static/images/logo-readme-dark.svg">
-         <source media="(prefers-color-scheme: light)" srcset="doc/_static/images/logo-readme-light.svg">
-         <img src="doc/_static/images/logo-readme-light.svg">
-       </picture>
-     </p>
-   </a>
+.. raw:: html
 
    <a href="https://bestpractices.coreinfrastructure.org/projects/74"><img
    src="https://bestpractices.coreinfrastructure.org/projects/74/badge"></a>
-   <a
-   href="https://github.com/zephyrproject-rtos/zephyr/actions/workflows/twister.yaml?query=branch%3Amain">
    <img
-   src="https://github.com/zephyrproject-rtos/zephyr/actions/workflows/twister.yaml/badge.svg?event=push"></a>
+   src="https://api.shippable.com/projects/58ffb2b8baa5e307002e1d79/badge?branch=master">
 
 
 The Zephyr Project is a scalable real-time operating system (RTOS) supporting
@@ -26,67 +17,98 @@ The Zephyr OS is based on a small-footprint kernel designed for use on
 resource-constrained systems: from simple embedded environmental sensors and
 LED wearables to sophisticated smart watches and IoT wireless gateways.
 
-The Zephyr kernel supports multiple architectures, including ARM (Cortex-A,
-Cortex-R, Cortex-M), Intel x86, ARC, Nios II, Tensilica Xtensa, and RISC-V,
-SPARC, MIPS, and a large number of `supported boards`_.
+The Zephyr kernel supports multiple architectures, including ARM Cortex-M,
+Intel x86, ARC, NIOS II, Tensilica Xtensa, and RISC V, and a large number of
+`supported boards`_.
 
 .. below included in doc/introduction/introduction.rst
 
-
-Getting Started
-***************
-
-Welcome to Zephyr! See the `Introduction to Zephyr`_ for a high-level overview,
-and the documentation's `Getting Started Guide`_ to start developing.
-
 .. start_include_here
 
 Community Support
 *****************
 
-Community support is provided via mailing lists and Discord; see the Resources
-below for details.
+The Zephyr Project Developer Community includes developers from member
+organizations and the general community all joining in the development of
+software within the Zephyr Project. Members contribute and discuss ideas,
+submit bugs and bug fixes, and provide training. They also help those in need
+through the community's forums such as mailing lists and IRC channels. Anyone
+can join the developer community and the community is always willing to help
+its members and the User Community to get the most out of the Zephyr Project.
 
-.. _project-resources:
+Welcome to the Zephyr community!
 
 Resources
 *********
 
-Here's a quick summary of resources to help you find your way around:
+Here's a quick summary of resources to find your way around the Zephyr Project
+support systems:
 
-* **Help**: `Asking for Help Tips`_
-* **Documentation**: http://docs.zephyrproject.org (`Getting Started Guide`_)
-* **Source Code**: https://github.com/zephyrproject-rtos/zephyr is the main
-  repository; https://elixir.bootlin.com/zephyr/latest/source contains a
-  searchable index
-* **Releases**: https://github.com/zephyrproject-rtos/zephyr/releases
-* **Samples and example code**: see `Sample and Demo Code Examples`_
-* **Mailing Lists**: users@lists.zephyrproject.org and
-  devel@lists.zephyrproject.org are the main user and developer mailing lists,
-  respectively. You can join the developer's list and search its archives at
-  `Zephyr Development mailing list`_. The other `Zephyr mailing list
-  subgroups`_ have their own archives and sign-up pages.
-* **Nightly CI Build Status**: https://lists.zephyrproject.org/g/builds
-  The builds@lists.zephyrproject.org mailing list archives the CI nightly build results.
-* **Chat**: Real-time chat happens in Zephyr's Discord Server. Use
-  this `Discord Invite`_ to register.
-* **Contributing**: see the `Contribution Guide`_
-* **Wiki**: `Zephyr GitHub wiki`_
-* **Issues**: https://github.com/zephyrproject-rtos/zephyr/issues
-* **Security Issues**: Email vulnerabilities@zephyrproject.org to report
-  security issues; also see our `Security`_ documentation. Security issues are
-  tracked separately at https://zephyrprojectsec.atlassian.net.
-* **Zephyr Project Website**: https://zephyrproject.org
+* **Zephyr Project Website**: The https://zephyrproject.org website is the
+  central source of information about the Zephyr Project. On this site, you'll
+  find background and current information about the project as well as all the
+  relevant links to project material.  For a quick start, refer to the
+  `Zephyr Introduction`_ and `Getting Started Guide`_.
 
-.. _Discord Invite: https://chat.zephyrproject.org
-.. _supported boards: http://docs.zephyrproject.org/latest/boards/index.html
-.. _Zephyr Documentation: http://docs.zephyrproject.org
-.. _Introduction to Zephyr: http://docs.zephyrproject.org/latest/introduction/index.html
-.. _Getting Started Guide: http://docs.zephyrproject.org/latest/develop/getting_started/index.html
-.. _Contribution Guide: http://docs.zephyrproject.org/latest/contribute/index.html
+* **Releases**: Source code for Zephyr kernel releases are available at
+  https://zephyrproject.org/developers/#downloads. On this page,
+  you'll find release information, and links to download or clone source
+  code from our GitHub repository.  You'll also find links for the Zephyr
+  SDK, a moderated collection of tools and libraries used to develop your
+  applications.
+
+* **Source Code in GitHub**: Zephyr Project source code is maintained on a
+  public GitHub repository at https://github.com/zephyrproject-rtos/zephyr.
+  You'll find information about getting access to the repository and how to
+  contribute to the project in this `Contribution Guide`_ document.
+
+* **Samples Code**: In addition to the kernel source code, there are also
+  many documented `Sample and Demo Code Examples`_ that can help show you
+  how to use Zephyr services and subsystems.
+
+* **Documentation**: Extensive Project technical documentation is developed
+  along with the Zephyr kernel itself, and can be found at
+  http://docs.zephyrproject.org.  Additional documentation is maintained in
+  the `Zephyr GitHub wiki`_.
+
+* **Cross-reference**: Source code cross-reference for the Zephyr
+  kernel and samples code is available at
+  https://elixir.bootlin.com/zephyr/latest/source.
+
+* **Issue Reporting and Tracking**: Requirements and Issue tracking is done in
+  the Github issues system: https://github.com/zephyrproject-rtos/zephyr/issues.
+  You can browse through the reported issues and submit issues of your own.
+
+* **Security-related Issue Reporting and Tracking**: For security-related
+  inquiries or reporting suspected security-related bugs in the Zephyr OS,
+  please send email to vulnerabilities@zephyrproject.org.  We will assess and
+  fix flaws according to our security policy outlined in the Zephyr Project
+  `Security Overview`_.
+
+  Security related issue tracking is done in JIRA.  The location of this JIRA
+  is https://zephyrprojectsec.atlassian.net.
+
+* **Mailing List**: The `Zephyr Development mailing list`_ is perhaps the most convenient
+  way to track developer discussions and to ask your own support questions to
+  the Zephyr project community.  There are also specific `Zephyr mailing list
+  subgroups`_ for announcements, builds, marketing, and Technical
+  Steering Committee notes, for example.
+  You can read through the message archives to follow
+  past posts and discussions, a good thing to do to discover more about the
+  Zephyr project.
+
+* **IRC Chatting**: You can chat online with the Zephyr project developer
+  community and other users in our IRC channel #zephyrproject on the
+  freenode.net IRC server. You can use the http://webchat.freenode.net web
+  client or use a client-side application such as pidgin.
+
+
+.. _supported boards: http://docs.zephyrproject.org/boards/boards.html
+.. _Zephyr Introduction: http://docs.zephyrproject.org/introduction/introducing_zephyr.html
+.. _Getting Started Guide: http://docs.zephyrproject.org/getting_started/getting_started.html
+.. _Contribution Guide: http://docs.zephyrproject.org/contribute/contribute_guidelines.html
 .. _Zephyr GitHub wiki: https://github.com/zephyrproject-rtos/zephyr/wiki
 .. _Zephyr Development mailing list: https://lists.zephyrproject.org/g/devel
 .. _Zephyr mailing list subgroups: https://lists.zephyrproject.org/g/main/subgroups
-.. _Sample and Demo Code Examples: http://docs.zephyrproject.org/latest/samples/index.html
-.. _Security: http://docs.zephyrproject.org/latest/security/index.html
-.. _Asking for Help Tips: https://docs.zephyrproject.org/latest/develop/getting_started/index.html#asking-for-help
+.. _Sample and Demo Code Examples: http://docs.zephyrproject.org/samples/samples.html
+.. _Security Overview: http://docs.zephyrproject.org/security/security-overview.html

VERSION

@@ -1,5 +1,5 @@
-VERSION_MAJOR = 3
-VERSION_MINOR = 4
-PATCHLEVEL = 99
+VERSION_MAJOR = 1
+VERSION_MINOR = 12
+PATCHLEVEL = 0
 VERSION_TWEAK = 0
 EXTRAVERSION =

arch/CMakeLists.txt

@@ -1,14 +1,4 @@
-# SPDX-License-Identifier: Apache-2.0
-
-# FIXME: SHADOW_VARS: Remove this once we have enabled -Wshadow globally.
-add_compile_options($<TARGET_PROPERTY:compiler,warning_shadow_variables>)
-
 add_definitions(-D__ZEPHYR_SUPERVISOR__)
 
-include_directories(
-  ${ZEPHYR_BASE}/kernel/include
-  ${ARCH_DIR}/${ARCH}/include
-  )
-
 add_subdirectory(common)
-add_subdirectory(${ARCH_DIR}/${ARCH} arch/${ARCH})
+add_subdirectory(${ARCH})

arch/arc/CMakeLists.txt

@@ -1,5 +1,3 @@
-# SPDX-License-Identifier: Apache-2.0
-
 # Enable debug support in mdb
 # Dwarf version 2 can be recognized by mdb
 # The default dwarf version in gdb is not recognized by mdb
@@ -10,38 +8,9 @@ zephyr_cc_option(-g3 -gdwarf-2)
 # See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63691
 zephyr_cc_option(-fno-delete-null-pointer-checks)
 
-zephyr_cc_option_ifdef(CONFIG_ARC_USE_UNALIGNED_MEM_ACCESS -munaligned-access)
+zephyr_cc_option_ifdef (CONFIG_LTO         -flto)
 
-if(NOT COMPILER STREQUAL arcmwdt)
-  if(CONFIG_THREAD_LOCAL_STORAGE)
-    # Instruct compiler to use proper register as cached thread pointer for thread local storage.
-    # For ARCv2 the default register is usually not specified - so we need to specify it
-    # For ARCv3 the register is fixed to r30, so we don't need to specify it
-    zephyr_compile_options_ifdef(CONFIG_ISA_ARCV2 -mtp-regno=26)
-  else()
-    # If thread local storage isn't used - we can safely schedule thread pointer register
-    zephyr_compile_options_ifdef(CONFIG_ISA_ARCV2 -mtp-regno=none)
-  endif()
-endif()
+set_property(GLOBAL PROPERTY E_KERNEL_ENTRY  -e${CONFIG_KERNEL_ENTRY})
 
+add_subdirectory(soc/${SOC_PATH})
 add_subdirectory(core)
-
-if(COMPILER STREQUAL arcmwdt)
-  add_subdirectory(arcmwdt)
-
-  if(CONFIG_64BIT)
-    zephyr_compile_options(-Ml)
-    # Instruct MWDT assembler not to warn when we load only lower half (32bit) of symbol
-    # instead of full 64bit address in ASM code. It is valid as we don't support Zephyr
-    # linkage to high addresses for 64bit ARC platforms.
-    zephyr_compile_options(-Wa,-offwarn=168)
-  endif()
-endif()
-
-if(CONFIG_ISA_ARCV3 AND CONFIG_64BIT)
-  set_property(GLOBAL PROPERTY PROPERTY_OUTPUT_FORMAT elf64-littlearc64)
-elseif(CONFIG_ISA_ARCV3 AND NOT CONFIG_64BIT)
-  set_property(GLOBAL PROPERTY PROPERTY_OUTPUT_FORMAT elf32-littlearc64)
-else()
-  set_property(GLOBAL PROPERTY PROPERTY_OUTPUT_FORMAT elf32-littlearc)
-endif()

arch/arc/Kconfig

@@ -1,7 +1,18 @@
-# ARC options
+# ARC EM4 options
 
-# Copyright (c) 2014, 2019 Wind River Systems, Inc.
+#
+# Copyright (c) 2014 Wind River Systems, Inc.
+#
 # SPDX-License-Identifier: Apache-2.0
+#
+
+choice
+	prompt "ARC SoC Selection"
+	depends on ARC
+
+	gsource "arch/arc/soc/*/Kconfig.soc"
+endchoice
+
 
 menu "ARC Options"
 	depends on ARC
@@ -9,136 +20,43 @@ menu "ARC Options"
 config ARCH
 	default "arc"
 
+config ARCH_DEFCONFIG
+	string
+	default "arch/arc/defconfig"
 
-config CPU_ARCEM
+menu "ARC EM4 processor options"
+
+config	CPU_ARCEM4
 	bool
+	default y
+	select CPU_ARCV2
 	select ATOMIC_OPERATIONS_C
 	help
-	  This option signifies the use of an ARC EM CPU
+	  This option signifies the use of an ARC EM4 CPU
 
-config CPU_ARCHS
+endmenu
+
+menu "ARCv2 Family Options"
+
+config	CPU_ARCV2
 	bool
-	select ATOMIC_OPERATIONS_BUILTIN
-	help
-	  This option signifies the use of an ARC HS CPU
-
-
-choice
-	prompt "ARC Instruction Set"
-	default ISA_ARCV2
-
-config ISA_ARCV2
-	bool "ARC ISA v2"
-	select ARCH_HAS_STACK_PROTECTION if ARC_HAS_STACK_CHECKING || (ARC_MPU && ARC_MPU_VER !=2)
-	select ARCH_HAS_USERSPACE if ARC_MPU
-	select ARCH_HAS_SINGLE_THREAD_SUPPORT if !SMP
-	select USE_SWITCH
-	select USE_SWITCH_SUPPORTED
-	help
-	  v2 ISA for the ARC-HS & ARC-EM cores
-
-config ISA_ARCV3
-	bool "ARC ISA v3"
-	select ARCH_HAS_SINGLE_THREAD_SUPPORT if !SMP
-	select USE_SWITCH
-	select USE_SWITCH_SUPPORTED
-
-endchoice
-
-if ISA_ARCV2
-
-config CPU_EM4
-	bool
-	select CPU_ARCEM
-	help
-	  If y, the SoC uses an ARC EM4 CPU
-
-config CPU_EM4_DMIPS
-	bool
-	select CPU_ARCEM
-	help
-	  If y, the SoC uses an ARC EM4 DMIPS CPU
-
-config CPU_EM4_FPUS
-	bool
-	select CPU_ARCEM
-	help
-	  If y, the SoC uses an ARC EM4 DMIPS CPU with the single-precision
-	  floating-point extension
-
-config CPU_EM4_FPUDA
-	bool
-	select CPU_ARCEM
-	help
-	  If y, the SoC uses an ARC EM4 DMIPS CPU with single-precision
-	  floating-point and double assist instructions
-
-config CPU_EM6
-	bool
-	select CPU_ARCEM
-	select CPU_HAS_DCACHE
-	select CPU_HAS_ICACHE
-	help
-	  If y, the SoC uses an ARC EM6 CPU
-
-config CPU_HS3X
-	bool
-	select CPU_ARCHS
-	select CPU_HAS_DCACHE
-	select CPU_HAS_ICACHE
-	help
-	  If y, the SoC uses an ARC HS3x CPU
-
-config CPU_HS4X
-	bool
-	select CPU_ARCHS
-	select CPU_HAS_DCACHE
-	select CPU_HAS_ICACHE
-	help
-	  If y, the SoC uses an HS4X CPU
-
-endif #ISA_ARCV2
-
-if ISA_ARCV3
-
-config CPU_HS5X
-	bool
-	select CPU_ARCHS
-	select CPU_HAS_DCACHE
-	select CPU_HAS_ICACHE
-	help
-	  If y, the SoC uses an ARC HS6x CPU
-
-config CPU_HS6X
-	bool
-	select CPU_ARCHS
-	select 64BIT
-	select CPU_HAS_DCACHE
-	select CPU_HAS_ICACHE
-	help
-	  If y, the SoC uses an ARC HS6x CPU
-
-endif #ISA_ARCV3
-
-config FP_FPU_DA
-	bool
-
-menu "ARC CPU Options"
-
-config ARC_HAS_ZOL
-	bool
-	depends on ISA_ARCV2
+	select ARCH_HAS_STACK_PROTECTION
+	select ARCH_HAS_USERSPACE if ARC_CORE_MPU
 	default y
 	help
-	  ARCv2 CPUs have ZOL hardware loop mechanism which the ARCv3 ISA drops.
-	  Architecturally ZOL provides
-	  - LPcc instruction
-	  - LP_COUNT core reg
-	  - LP_START, LP_END aux regs
-	  Disabling this option removes usage of ZOL regs from code
+	  This option signifies the use of a CPU of the ARCv2 family.
 
-config NUM_IRQ_PRIO_LEVELS
-	int "Number of supported interrupt priority levels"
+config	DATA_ENDIANNESS_LITTLE
+	bool
+	default y
+	help
+	  This is driven by the processor implementation, since it is fixed in
+	  hardware. The BSP should set this value to 'n' if the data is
+	  implemented as big endian.
+
+config	NUM_IRQ_PRIO_LEVELS
+	int
+	prompt "Number of supported interrupt priority levels"
 	range 1 16
 	help
 	  Interrupt priorities available will be 0 to NUM_IRQ_PRIO_LEVELS-1.
@@ -146,8 +64,9 @@ config NUM_IRQ_PRIO_LEVELS
 
 	  The BSP must provide a valid default for proper operation.
 
-config NUM_IRQS
-	int "Upper limit of interrupt numbers/IDs used"
+config	NUM_IRQS
+	int
+	prompt "Upper limit of interrupt numbers/IDs used"
 	range 17 256
 	help
 	  Interrupts available will be 0 to NUM_IRQS-1.
@@ -157,10 +76,10 @@ config NUM_IRQS
 	  The BSP must provide a valid default. This drives the size of the
 	  vector table.
 
-config RGF_NUM_BANKS
-	int "Number of General Purpose Register Banks"
-	depends on ARC_FIRQ
-	depends on NUM_IRQ_PRIO_LEVELS > 1
+config	RGF_NUM_BANKS
+	int
+	prompt "Number of General Purpose Register Banks"
+	depends on CPU_ARCV2
 	range 1 2
 	default 2
 	help
@@ -170,16 +89,10 @@ config RGF_NUM_BANKS
 	  If fast interrupts are supported but there is only 1
 	  register bank, the fast interrupt handler must save
 	  and restore general purpose registers.
-	  NOTE: it's required to have more than one interrupt priority level
-	  to use second register bank - otherwise all interrupts will use
-	  same register bank. Such configuration isn't supported in software
-	  and it is not beneficial from the performance point of view.
 
 config ARC_FIRQ
-	bool "FIRQ enable"
-	depends on ISA_ARCV2
-	depends on NUM_IRQ_PRIO_LEVELS > 1
-	depends on !ARC_HAS_SECURE
+	bool
+	prompt "FIRQ enable"
 	default y
 	help
 	  Fast interrupts are supported (FIRQ). If FIRQ enabled, for interrupts
@@ -187,74 +100,18 @@ config ARC_FIRQ
 	  other regs will be saved according to the number of register bank;
 	  If FIRQ is disabled, the handle of interrupts with highest priority
 	  will be same with other interrupts.
-	  NOTE: we don't allow the configuration with FIRQ enabled and only one
-	  interrupt priority level (so all interrupts are FIRQ). Such
-	  configuration isn't supported in software and it is not beneficial
-	  from the performance point of view.
 
-config ARC_FIRQ_STACK
-	bool "Separate firq stack"
-	depends on ARC_FIRQ && RGF_NUM_BANKS > 1
-	help
-	  Use separate stack for FIRQ handing. When the fast irq is also a direct
-	  irq, this will get the minimal interrupt latency.
-
-config ARC_FIRQ_STACK_SIZE
-	int "FIRQ stack size"
-	depends on ARC_FIRQ_STACK
-	default 1024
-	help
-	  The size of firq stack.
-
-config ARC_HAS_STACK_CHECKING
-	bool "ARC has STACK_CHECKING"
-	depends on ISA_ARCV2
-	default y
-	help
-	  ARC is configured with STACK_CHECKING which is a mechanism for
-	  checking stack accesses and raising an exception when a stack
-	  overflow or underflow is detected.
-
-config ARC_CONNECT
-	bool "ARC has ARC connect"
-	select SCHED_IPI_SUPPORTED
-	help
-	  ARC is configured with ARC CONNECT which is a hardware for connecting
-	  multi cores.
-
-config ARC_STACK_CHECKING
-	bool
-	select NO_UNUSED_STACK_INSPECTION
-	help
-	  Use ARC STACK_CHECKING to do stack protection
-
-config ARC_STACK_PROTECTION
+config	ARC_STACK_CHECKING
 	bool
 	default y if HW_STACK_PROTECTION
-	select ARC_STACK_CHECKING if ARC_HAS_STACK_CHECKING
-	select MPU_STACK_GUARD if (!ARC_STACK_CHECKING && ARC_MPU && ARC_MPU_VER !=2)
 	select THREAD_STACK_INFO
 	help
-	  This option enables either:
-	  - The ARC stack checking, or
-	  - the MPU-based stack guard
-	  to cause a system fatal error
-	  if the bounds of the current process stack are overflowed.
-	  The two stack guard options are mutually exclusive. The
-	  selection of the ARC stack checking is
-	  prioritized over the MPU-based stack guard.
+	  ARCV2 has a special feature allowing to check stack overflows. This
+	  enables code that allows using this debug feature
 
-config ARC_USE_UNALIGNED_MEM_ACCESS
-	bool "Unaligned access in HW"
-	default y if CPU_ARCHS
-	depends on (CPU_ARCEM && !ARC_HAS_SECURE) || CPU_ARCHS
-	help
-	  ARC EM cores w/o secure shield 2+2 mode support might be configured
-	  to support unaligned memory access which is then disabled by default.
-	  Enable unaligned access in hardware and make software to use it.
-
-config FAULT_DUMP
-	int "Fault dump level"
+config	FAULT_DUMP
+	int
+	prompt "Fault dump level"
 	default 2
 	range 0 2
 	help
@@ -268,6 +125,10 @@ config FAULT_DUMP
 
 	  0: Off.
 
+config	XIP
+	default n if NSIM
+	default y
+
 config GEN_ISR_TABLES
 	default y
 
@@ -275,85 +136,35 @@ config GEN_IRQ_START_VECTOR
 	default 16
 
 config HARVARD
-	bool "Harvard Architecture"
+	prompt "Harvard Architecture"
+	bool
+	default n
 	help
 	  The ARC CPU can be configured to have two busses;
 	  one for instruction fetching and another that serves as a data bus.
 
 config CODE_DENSITY
-	bool "Code Density Option"
+	prompt "Code Density Option"
+	bool
+	default n
 	help
 	  Enable code density option to get better code density
 
-config ARC_HAS_ACCL_REGS
-	bool "Reg Pair ACCL:ACCH (FPU and/or MPY > 6 and/or DSP)"
-	default y if CPU_HS3X || CPU_HS4X || CPU_HS5X || CPU_HS6X
-	help
-	  Depending on the configuration, CPU can contain accumulator reg-pair
-	  (also referred to as r58:r59). These can also be used by gcc as GPR so
-	  kernel needs to save/restore per process
-
 config ARC_HAS_SECURE
-	bool "ARC has SecureShield"
-	depends on ISA_ARCV2
-	select CPU_HAS_TEE
-	select ARCH_HAS_TRUSTED_EXECUTION
+	bool
+	#  a hidden option
+	default n
 	help
 	  This option is enabled when ARC core supports secure mode
 
-config SJLI_TABLE_SIZE
-	int "SJLI table size"
-	depends on ARC_SECURE_FIRMWARE
-	default 8
-	help
-	  The size of sjli (Secure Jump and Link Indexed) table. The
-	  code in normal mode call secure services in secure mode through
-	  sjli instruction.
-
-config ARC_SECURE_FIRMWARE
-	bool "Generate Secure Firmware"
-	depends on ARC_HAS_SECURE
-	default y if TRUSTED_EXECUTION_SECURE
-	help
-	  This option indicates that we are building a Zephyr image that
-	  is intended to execute in secure mode. The option is only
-	  applicable to ARC processors that implement the SecureShield.
-
-	  This option enables Zephyr to include code that executes in
-	  secure mode, as well as to exclude code that is designed to
-	  execute only in normal mode.
-
-	  Code executing in secure mode has access to both the secure
-	  and normal resources of the ARC processors.
-
-config ARC_NORMAL_FIRMWARE
-	bool "Generate Normal Firmware"
-	depends on !ARC_SECURE_FIRMWARE
-	depends on ARC_HAS_SECURE
-	default y if TRUSTED_EXECUTION_NONSECURE
-	help
-	  This option indicates that we are building a Zephyr image that
-	  is intended to execute in normal mode. Execution of this
-	  image is triggered by secure firmware that executes in secure
-	  mode. The option is only applicable to ARC processors that
-	  implement the SecureShield.
-
-	  This option enables Zephyr to include code that executes in
-	  normal mode only, as well as to exclude code that is
-	  designed to execute only in secure mode.
-
-	  Code executing in normal mode has no access to secure
-	  resources of the ARC processors, and, therefore, it shall avoid
-	  accessing them.
-
-source "arch/arc/core/dsp/Kconfig"
-
 menu "ARC MPU Options"
 depends on CPU_HAS_MPU
 
 config ARC_MPU_ENABLE
-	bool "Memory Protection Unit (MPU)"
+	bool "Enable MPU"
+	depends on CPU_HAS_MPU
 	select ARC_MPU
+	default n
 	help
 	  Enable MPU
 
@@ -361,62 +172,43 @@ source "arch/arc/core/mpu/Kconfig"
 
 endmenu
 
-config DCACHE_LINE_SIZE
-	default 32
-
-config ARC_EXCEPTION_STACK_SIZE
-	int "ARC exception handling stack size"
-	default 768 if !64BIT
-	default 2048 if 64BIT
-	help
-	  Size in bytes of exception handling stack which is at the top of
-	  interrupt stack to get smaller memory footprint because exception
-	  is not frequent. To reduce the impact on interrupt handling,
-	  especially nested interrupt, it cannot be too large.
-
-endmenu
-
-config ARC_EXCEPTION_DEBUG
-	bool "Unhandled exception debugging information"
+config CACHE_LINE_SIZE_DETECT
+	bool
+	prompt "Detect d-cache line size at runtime"
 	default n
-	depends on PRINTK || LOG
 	help
-	  Print human-readable information about exception vectors, cause codes,
-	  and parameters, at a cost of code/data size for the human-readable
-	  strings.
+	  This option enables querying the d-cache build register for finding
+	  the d-cache line size at the expense of taking more memory and code
+	  and a slightly increased boot time.
 
-config ARC_EARLY_SOC_INIT
-	bool "Make early stage SoC-specific initialization"
+	  If the CPU's d-cache line size is known in advance, disable this
+	  option and manually enter the value for CACHE_LINE_SIZE.
+
+config CACHE_LINE_SIZE
+	int
+	prompt "Cache line size" if !CACHE_LINE_SIZE_DETECT
+	default 32
 	help
-	  Call SoC per-core setup code on early stage initialization
-	  (before C runtime initialization). Setup code is called in form of
-	  soc_early_asm_init_percpu assembler macro.
+	  Size in bytes of a CPU d-cache line.
+
+	  Detect automatically at runtime by selecting CACHE_LINE_SIZE_DETECT.
+
+config ARCH_CACHE_FLUSH_DETECT
+	bool
+	default n
+
+config CACHE_FLUSHING
+	bool
+	default n
+	prompt "Enable d-cache flushing mechanism"
+	help
+	  This links in the sys_cache_flush() function, which provides a
+	  way to flush multiple lines of the d-cache.
+	  If the d-cache is present, set this to y.
+	  If the d-cache is NOT present, set this to n.
 
 endmenu
 
-config MAIN_STACK_SIZE
-	default 4096 if 64BIT
+gsource "arch/arc/soc/*/Kconfig"
 
-config ISR_STACK_SIZE
-	default 4096 if 64BIT
-
-config SYSTEM_WORKQUEUE_STACK_SIZE
-	default 4096 if 64BIT
-
-config IDLE_STACK_SIZE
-	default 1024 if 64BIT
-
-config IPM_CONSOLE_STACK_SIZE
-	default 2048 if 64BIT
-
-config TEST_EXTRA_STACK_SIZE
-	default 2048 if 64BIT
-
-config CMSIS_THREAD_MAX_STACK_SIZE
-	default 2048 if 64BIT
-
-config CMSIS_V2_THREAD_MAX_STACK_SIZE
-	default 2048 if 64BIT
-
-config CMSIS_V2_THREAD_DYNAMIC_STACK_SIZE
-	default 2048 if 64BIT
+endmenu

arch/arc/arcmwdt/CMakeLists.txt

@@ -1,5 +0,0 @@
-# SPDX-License-Identifier: Apache-2.0
-
-if(CONFIG_ARCMWDT_LIBC OR CONFIG_CPP)
-  zephyr_sources(arcmwdt-dtr-stubs.c)
-endif()

arch/arc/arcmwdt/arcmwdt-dtr-stubs.c

@@ -1,22 +0,0 @@
-/*
- * Copyright (c) 2021 Synopsys.
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-#include <zephyr/toolchain.h>
-
-__weak void *__dso_handle;
-
-int __cxa_atexit(void (*destructor)(void *), void *objptr, void *dso)
-{
-	ARG_UNUSED(destructor);
-	ARG_UNUSED(objptr);
-	ARG_UNUSED(dso);
-	return 0;
-}
-
-int atexit(void (*function)(void))
-{
-	return 0;
-}

arch/arc/core/CMakeLists.txt

@@ -1,36 +1,27 @@
-# SPDX-License-Identifier: Apache-2.0
-
 zephyr_library()
 
 zephyr_library_sources(
-  thread.c
-  thread_entry_wrapper.S
-  cpu_idle.S
-  fatal.c
-  fault.c
-  fault_s.S
-  irq_manage.c
-  timestamp.c
-  isr_wrapper.S
-  regular_irq.S
-  switch.S
-  prep_c.c
-  reset.S
-  vector_table.c
-  )
+	thread.c
+	thread_entry_wrapper.S
+	cpu_idle.S
+	fatal.c
+	fault.c
+	fault_s.S
+	irq_manage.c
+	cache.c
+	timestamp.c
+	isr_wrapper.S
+	regular_irq.S
+	swap.S
+	sys_fatal_error_handler.c
+	prep_c.c
+	reset.S
+	vector_table.c
+	)
 
-zephyr_library_sources_ifdef(CONFIG_ARCH_CACHE cache.c)
 zephyr_library_sources_ifdef(CONFIG_ARC_FIRQ fast_irq.S)
 
-zephyr_library_sources_ifdef(CONFIG_IRQ_OFFLOAD irq_offload.c)
-
-zephyr_library_sources_ifdef(CONFIG_USERSPACE userspace.S)
-zephyr_library_sources_ifdef(CONFIG_ARC_CONNECT arc_connect.c)
-zephyr_library_sources_ifdef(CONFIG_ARC_CONNECT arc_smp.c)
-
-zephyr_library_sources_ifdef(CONFIG_THREAD_LOCAL_STORAGE tls.c)
-
+zephyr_library_sources_if_kconfig(irq_offload.c)
+zephyr_library_sources_ifdef(CONFIG_ATOMIC_OPERATIONS_CUSTOM atomic.c)
 add_subdirectory_ifdef(CONFIG_ARC_CORE_MPU mpu)
-add_subdirectory_ifdef(CONFIG_ARC_SECURE_FIRMWARE secureshield)
-
-zephyr_linker_sources(ROM_START SORT_KEY 0x0vectors vector_table.ld)
+zephyr_library_sources_ifdef(CONFIG_USERSPACE userspace.S)

arch/arc/core/arc_connect.c

@@ -1,443 +0,0 @@
-/*
- * Copyright (c) 2019 Synopsys.
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-/**
- * @file
- * @brief ARCv2 ARC CONNECT driver
- *
- */
-
-#include <zephyr/kernel.h>
-#include <zephyr/arch/cpu.h>
-#include <zephyr/spinlock.h>
-#include <kernel_internal.h>
-
-static struct k_spinlock arc_connect_spinlock;
-
-/* Generate an inter-core interrupt to the target core */
-void z_arc_connect_ici_generate(uint32_t core)
-{
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd(ARC_CONNECT_CMD_INTRPT_GENERATE_IRQ, core);
-	}
-}
-
-/* Acknowledge the inter-core interrupt raised by core */
-void z_arc_connect_ici_ack(uint32_t core)
-{
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd(ARC_CONNECT_CMD_INTRPT_GENERATE_ACK, core);
-	}
-}
-
-/* Read inter-core interrupt status */
-uint32_t z_arc_connect_ici_read_status(uint32_t core)
-{
-	uint32_t ret = 0;
-
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd(ARC_CONNECT_CMD_INTRPT_READ_STATUS, core);
-		ret = z_arc_connect_cmd_readback();
-	}
-
-	return ret;
-}
-
-/* Check the source of inter-core interrupt */
-uint32_t z_arc_connect_ici_check_src(void)
-{
-	uint32_t ret = 0;
-
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd(ARC_CONNECT_CMD_INTRPT_CHECK_SOURCE, 0);
-		ret = z_arc_connect_cmd_readback();
-	}
-
-	return ret;
-}
-
-/* Clear the inter-core interrupt */
-void z_arc_connect_ici_clear(void)
-{
-	uint32_t cpu, c;
-
-	K_SPINLOCK(&arc_connect_spinlock) {
-
-		z_arc_connect_cmd(ARC_CONNECT_CMD_INTRPT_CHECK_SOURCE, 0);
-		cpu = z_arc_connect_cmd_readback(); /* 1,2,4,8... */
-	/*
-	 * In rare case, multiple concurrent ICIs sent to same target can
-	 * possibly be coalesced by MCIP into 1 asserted IRQ, so @cpu can be
-	 * "vectored" (multiple bits sets) as opposed to typical single bit
-	 */
-		while (cpu) {
-			c = find_lsb_set(cpu) - 1;
-			z_arc_connect_cmd(
-				ARC_CONNECT_CMD_INTRPT_GENERATE_ACK, c);
-			cpu &= ~(1U << c);
-		}
-	}
-}
-
-/* Reset the cores in core_mask */
-void z_arc_connect_debug_reset(uint32_t core_mask)
-{
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd_data(ARC_CONNECT_CMD_DEBUG_RESET,
-			0, core_mask);
-	}
-}
-
-/* Halt the cores in core_mask */
-void z_arc_connect_debug_halt(uint32_t core_mask)
-{
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd_data(ARC_CONNECT_CMD_DEBUG_HALT,
-			0, core_mask);
-	}
-}
-
-/* Run the cores in core_mask */
-void z_arc_connect_debug_run(uint32_t core_mask)
-{
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd_data(ARC_CONNECT_CMD_DEBUG_RUN,
-			0, core_mask);
-	}
-}
-
-/* Set core mask */
-void z_arc_connect_debug_mask_set(uint32_t core_mask, uint32_t mask)
-{
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd_data(ARC_CONNECT_CMD_DEBUG_SET_MASK,
-			mask, core_mask);
-	}
-}
-
-/* Read core mask */
-uint32_t z_arc_connect_debug_mask_read(uint32_t core_mask)
-{
-	uint32_t ret = 0;
-
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd_data(ARC_CONNECT_CMD_DEBUG_READ_MASK,
-			0, core_mask);
-		ret = z_arc_connect_cmd_readback();
-	}
-
-	return ret;
-}
-
-/*
- * Select cores that should be halted if the core issuing the command is halted
- */
-void z_arc_connect_debug_select_set(uint32_t core_mask)
-{
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd_data(ARC_CONNECT_CMD_DEBUG_SET_SELECT,
-			0, core_mask);
-	}
-}
-
-/* Read the select value */
-uint32_t z_arc_connect_debug_select_read(void)
-{
-	uint32_t ret = 0;
-
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd(ARC_CONNECT_CMD_DEBUG_READ_SELECT, 0);
-		ret = z_arc_connect_cmd_readback();
-	}
-
-	return ret;
-}
-
-/* Read the status, halt or run of all cores in the system */
-uint32_t z_arc_connect_debug_en_read(void)
-{
-	uint32_t ret = 0;
-
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd(ARC_CONNECT_CMD_DEBUG_READ_EN, 0);
-		ret = z_arc_connect_cmd_readback();
-	}
-
-	return ret;
-}
-
-/* Read the last command sent */
-uint32_t z_arc_connect_debug_cmd_read(void)
-{
-	uint32_t ret = 0;
-
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd(ARC_CONNECT_CMD_DEBUG_READ_CMD, 0);
-		ret = z_arc_connect_cmd_readback();
-	}
-
-	return ret;
-}
-
-/* Read the value of internal MCD_CORE register */
-uint32_t z_arc_connect_debug_core_read(void)
-{
-	uint32_t ret = 0;
-
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd(ARC_CONNECT_CMD_DEBUG_READ_CORE, 0);
-		ret = z_arc_connect_cmd_readback();
-	}
-
-	return ret;
-}
-
-/* Clear global free running counter */
-void z_arc_connect_gfrc_clear(void)
-{
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd(ARC_CONNECT_CMD_GFRC_CLEAR, 0);
-	}
-}
-
-/* Read total 64 bits of global free running counter */
-uint64_t z_arc_connect_gfrc_read(void)
-{
-	uint32_t low;
-	uint32_t high;
-	uint32_t key;
-
-	/*
-	 * each core has its own arc connect interface, i.e.,
-	 * CMD/READBACK. So several concurrent commands to ARC
-	 * connect are of if they are trying to access different
-	 * sub-components. For GFRC, HW allows simultaneously accessing to
-	 * counters. So an irq lock is enough.
-	 */
-	key = arch_irq_lock();
-
-	z_arc_connect_cmd(ARC_CONNECT_CMD_GFRC_READ_LO, 0);
-	low = z_arc_connect_cmd_readback();
-
-	z_arc_connect_cmd(ARC_CONNECT_CMD_GFRC_READ_HI, 0);
-	high = z_arc_connect_cmd_readback();
-
-	arch_irq_unlock(key);
-
-	return (((uint64_t)high) << 32) | low;
-}
-
-/* Enable global free running counter */
-void z_arc_connect_gfrc_enable(void)
-{
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd(ARC_CONNECT_CMD_GFRC_ENABLE, 0);
-	}
-}
-
-/* Disable global free running counter */
-void z_arc_connect_gfrc_disable(void)
-{
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd(ARC_CONNECT_CMD_GFRC_DISABLE, 0);
-	}
-}
-
-/* Disable global free running counter */
-void z_arc_connect_gfrc_core_set(uint32_t core_mask)
-{
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd_data(ARC_CONNECT_CMD_GFRC_SET_CORE,
-			0, core_mask);
-	}
-}
-
-/* Set the relevant cores to halt global free running counter */
-uint32_t z_arc_connect_gfrc_halt_read(void)
-{
-	uint32_t ret = 0;
-
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd(ARC_CONNECT_CMD_GFRC_READ_HALT, 0);
-		ret = z_arc_connect_cmd_readback();
-	}
-
-	return ret;
-}
-
-/* Read the internal CORE register */
-uint32_t z_arc_connect_gfrc_core_read(void)
-{
-	uint32_t ret = 0;
-
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd(ARC_CONNECT_CMD_GFRC_READ_CORE, 0);
-		ret = z_arc_connect_cmd_readback();
-	}
-
-	return ret;
-}
-
-/* Enable interrupt distribute unit */
-void z_arc_connect_idu_enable(void)
-{
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd(ARC_CONNECT_CMD_IDU_ENABLE, 0);
-	}
-}
-
-/* Disable interrupt distribute unit */
-void z_arc_connect_idu_disable(void)
-{
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd(ARC_CONNECT_CMD_IDU_DISABLE, 0);
-	}
-}
-
-/* Read enable status of interrupt distribute unit */
-uint32_t z_arc_connect_idu_read_enable(void)
-{
-	uint32_t ret = 0;
-
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd(ARC_CONNECT_CMD_IDU_READ_ENABLE, 0);
-		ret = z_arc_connect_cmd_readback();
-	}
-
-	return ret;
-}
-
-/*
- * Set the triggering mode and distribution mode for the specified common
- * interrupt
- */
-void z_arc_connect_idu_set_mode(uint32_t irq_num,
-	uint16_t trigger_mode, uint16_t distri_mode)
-{
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd_data(ARC_CONNECT_CMD_IDU_SET_MODE,
-			irq_num, (distri_mode | (trigger_mode << 4)));
-	}
-}
-
-/* Read the internal MODE register of the specified common interrupt */
-uint32_t z_arc_connect_idu_read_mode(uint32_t irq_num)
-{
-	uint32_t ret = 0;
-
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd(ARC_CONNECT_CMD_IDU_READ_MODE, irq_num);
-		ret = z_arc_connect_cmd_readback();
-	}
-
-	return ret;
-}
-
-/*
- * Set the target cores to receive the specified common interrupt
- * when it is triggered
- */
-void z_arc_connect_idu_set_dest(uint32_t irq_num, uint32_t core_mask)
-{
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd_data(ARC_CONNECT_CMD_IDU_SET_DEST,
-			irq_num, core_mask);
-	}
-}
-
-/* Read the internal DEST register of the specified common interrupt */
-uint32_t z_arc_connect_idu_read_dest(uint32_t irq_num)
-{
-	uint32_t ret = 0;
-
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd(ARC_CONNECT_CMD_IDU_READ_DEST, irq_num);
-		ret = z_arc_connect_cmd_readback();
-	}
-
-	return ret;
-}
-
-/* Assert the specified common interrupt */
-void z_arc_connect_idu_gen_cirq(uint32_t irq_num)
-{
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd(ARC_CONNECT_CMD_IDU_GEN_CIRQ, irq_num);
-	}
-}
-
-/* Acknowledge the specified common interrupt */
-void z_arc_connect_idu_ack_cirq(uint32_t irq_num)
-{
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd(ARC_CONNECT_CMD_IDU_ACK_CIRQ, irq_num);
-	}
-}
-
-/* Read the internal STATUS register of the specified common interrupt */
-uint32_t z_arc_connect_idu_check_status(uint32_t irq_num)
-{
-	uint32_t ret = 0;
-
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd(ARC_CONNECT_CMD_IDU_CHECK_STATUS, irq_num);
-		ret = z_arc_connect_cmd_readback();
-	}
-
-	return ret;
-}
-
-/* Read the internal SOURCE register of the specified common interrupt */
-uint32_t z_arc_connect_idu_check_source(uint32_t irq_num)
-{
-	uint32_t ret = 0;
-
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd(ARC_CONNECT_CMD_IDU_CHECK_SOURCE, irq_num);
-		ret = z_arc_connect_cmd_readback();
-	}
-
-	return ret;
-}
-
-/* Mask or unmask the specified common interrupt */
-void z_arc_connect_idu_set_mask(uint32_t irq_num, uint32_t mask)
-{
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd_data(ARC_CONNECT_CMD_IDU_SET_MASK,
-			irq_num, mask);
-	}
-}
-
-/* Read the internal MASK register of the specified common interrupt */
-uint32_t z_arc_connect_idu_read_mask(uint32_t irq_num)
-{
-	uint32_t ret = 0;
-
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd(ARC_CONNECT_CMD_IDU_READ_MASK, irq_num);
-		ret = z_arc_connect_cmd_readback();
-	}
-
-	return ret;
-}
-
-/*
- * Check if it is the first-acknowledging core to the common interrupt
- * if IDU is programmed in the first-acknowledged mode
- */
-uint32_t z_arc_connect_idu_check_first(uint32_t irq_num)
-{
-	uint32_t ret = 0;
-
-	K_SPINLOCK(&arc_connect_spinlock) {
-		z_arc_connect_cmd(ARC_CONNECT_CMD_IDU_CHECK_FIRST, irq_num);
-		ret = z_arc_connect_cmd_readback();
-	}
-
-	return ret;
-
-}

arch/arc/core/arc_smp.c

@@ -1,193 +0,0 @@
-/*
- * Copyright (c) 2019 Synopsys.
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-/**
- * @file
- * @brief codes required for ARC multicore and Zephyr smp support
- *
- */
-#include <zephyr/device.h>
-#include <zephyr/kernel.h>
-#include <zephyr/kernel_structs.h>
-#include <ksched.h>
-#include <zephyr/init.h>
-#include <zephyr/irq.h>
-#include <arc_irq_offload.h>
-
-volatile struct {
-	arch_cpustart_t fn;
-	void *arg;
-} arc_cpu_init[CONFIG_MP_MAX_NUM_CPUS];
-
-/*
- * arc_cpu_wake_flag is used to sync up master core and slave cores
- * Slave core will spin for arc_cpu_wake_flag until master core sets
- * it to the core id of slave core. Then, slave core clears it to notify
- * master core that it's waken
- *
- */
-volatile uint32_t arc_cpu_wake_flag;
-
-volatile char *arc_cpu_sp;
-/*
- * _curr_cpu is used to record the struct of _cpu_t of each cpu.
- * for efficient usage in assembly
- */
-volatile _cpu_t *_curr_cpu[CONFIG_MP_MAX_NUM_CPUS];
-
-/* Called from Zephyr initialization */
-void arch_start_cpu(int cpu_num, k_thread_stack_t *stack, int sz,
-		    arch_cpustart_t fn, void *arg)
-{
-	_curr_cpu[cpu_num] = &(_kernel.cpus[cpu_num]);
-	arc_cpu_init[cpu_num].fn = fn;
-	arc_cpu_init[cpu_num].arg = arg;
-
-	/* set the initial sp of target sp through arc_cpu_sp
-	 * arc_cpu_wake_flag will protect arc_cpu_sp that
-	 * only one slave cpu can read it per time
-	 */
-	arc_cpu_sp = Z_KERNEL_STACK_BUFFER(stack) + sz;
-
-	arc_cpu_wake_flag = cpu_num;
-
-	/* wait slave cpu to start */
-	while (arc_cpu_wake_flag != 0U) {
-		;
-	}
-}
-
-#ifdef CONFIG_SMP
-static void arc_connect_debug_mask_update(int cpu_num)
-{
-	uint32_t core_mask = 1 << cpu_num;
-
-	/*
-	 * MDB debugger may modify debug_select and debug_mask registers on start, so we can't
-	 * rely on debug_select reset value.
-	 */
-	if (cpu_num != ARC_MP_PRIMARY_CPU_ID) {
-		core_mask |= z_arc_connect_debug_select_read();
-	}
-
-	z_arc_connect_debug_select_set(core_mask);
-	/* Debugger halts cores at all conditions:
-	 * ARC_CONNECT_CMD_DEBUG_MASK_H: Core global halt.
-	 * ARC_CONNECT_CMD_DEBUG_MASK_AH: Actionpoint halt.
-	 * ARC_CONNECT_CMD_DEBUG_MASK_BH: Software breakpoint halt.
-	 * ARC_CONNECT_CMD_DEBUG_MASK_SH: Self halt.
-	 */
-	z_arc_connect_debug_mask_set(core_mask,	(ARC_CONNECT_CMD_DEBUG_MASK_SH
-		| ARC_CONNECT_CMD_DEBUG_MASK_BH | ARC_CONNECT_CMD_DEBUG_MASK_AH
-		| ARC_CONNECT_CMD_DEBUG_MASK_H));
-}
-#endif
-
-void arc_core_private_intc_init(void);
-
-/* the C entry of slave cores */
-void z_arc_slave_start(int cpu_num)
-{
-	arch_cpustart_t fn;
-
-#ifdef CONFIG_SMP
-	struct arc_connect_bcr bcr;
-
-	bcr.val = z_arc_v2_aux_reg_read(_ARC_V2_CONNECT_BCR);
-
-	if (bcr.dbg) {
-		/* configure inter-core debug unit if available */
-		arc_connect_debug_mask_update(cpu_num);
-	}
-
-	z_irq_setup();
-
-	arc_core_private_intc_init();
-
-	arc_irq_offload_init_smp();
-
-	z_arc_connect_ici_clear();
-	z_irq_priority_set(DT_IRQN(DT_NODELABEL(ici)),
-			   DT_IRQ(DT_NODELABEL(ici), priority), 0);
-	irq_enable(DT_IRQN(DT_NODELABEL(ici)));
-#endif
-	/* call the function set by arch_start_cpu */
-	fn = arc_cpu_init[cpu_num].fn;
-
-	fn(arc_cpu_init[cpu_num].arg);
-}
-
-#ifdef CONFIG_SMP
-
-static void sched_ipi_handler(const void *unused)
-{
-	ARG_UNUSED(unused);
-
-	z_arc_connect_ici_clear();
-	z_sched_ipi();
-}
-
-/* arch implementation of sched_ipi */
-void arch_sched_ipi(void)
-{
-	uint32_t i;
-
-	/* broadcast sched_ipi request to other cores
-	 * if the target is current core, hardware will ignore it
-	 */
-	unsigned int num_cpus = arch_num_cpus();
-
-	for (i = 0U; i < num_cpus; i++) {
-		z_arc_connect_ici_generate(i);
-	}
-}
-
-static int arc_smp_init(void)
-{
-	struct arc_connect_bcr bcr;
-
-	/* necessary master core init */
-	_curr_cpu[0] = &(_kernel.cpus[0]);
-
-	bcr.val = z_arc_v2_aux_reg_read(_ARC_V2_CONNECT_BCR);
-
-	if (bcr.dbg) {
-		/* configure inter-core debug unit if available */
-		arc_connect_debug_mask_update(ARC_MP_PRIMARY_CPU_ID);
-	}
-
-	if (bcr.ipi) {
-	/* register ici interrupt, just need master core to register once */
-		z_arc_connect_ici_clear();
-		IRQ_CONNECT(DT_IRQN(DT_NODELABEL(ici)),
-			    DT_IRQ(DT_NODELABEL(ici), priority),
-			    sched_ipi_handler, NULL, 0);
-
-		irq_enable(DT_IRQN(DT_NODELABEL(ici)));
-	} else {
-		__ASSERT(0,
-			"ARC connect has no inter-core interrupt\n");
-		return -ENODEV;
-	}
-
-	if (bcr.gfrc) {
-		/* global free running count init */
-		z_arc_connect_gfrc_enable();
-
-		/* when all cores halt, gfrc halt */
-		z_arc_connect_gfrc_core_set((1 << arch_num_cpus()) - 1);
-		z_arc_connect_gfrc_clear();
-	} else {
-		__ASSERT(0,
-			"ARC connect has no global free running counter\n");
-		return -ENODEV;
-	}
-
-	return 0;
-}
-
-SYS_INIT(arc_smp_init, PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);
-#endif

arch/arc/core/atomic.S

@@ -0,0 +1,422 @@
+/*
+ * Copyright (c) 2014 Wind River Systems, Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * @file
+ * @brief ARC atomic operations library
+ *
+ * This library provides routines to perform a number of atomic operations
+ * on a memory location: add, subtract, increment, decrement, bitwise OR,
+ * bitwise NOR, bitwise AND, bitwise NAND, set, clear and compare-and-swap.
+ *
+ * This requires the processor to support LLOCK and SCOND instructions,
+ * where they are not supported on ARC EM family processors.
+ */
+
+#include <toolchain.h>
+#include <linker/sections.h>
+
+/* exports */
+
+GTEXT(atomic_set)
+GTEXT(atomic_get)
+GTEXT(atomic_add)
+GTEXT(atomic_nand)
+GTEXT(atomic_and)
+GTEXT(atomic_or)
+GTEXT(atomic_xor)
+GTEXT(atomic_clear)
+GTEXT(atomic_dec)
+GTEXT(atomic_inc)
+GTEXT(atomic_sub)
+GTEXT(atomic_cas)
+
+	.section .TEXT._Atomic, "ax"
+	.balign  2
+
+/**
+ *
+ * @brief Atomically clear a memory location
+ *
+ * This routine atomically clears the contents of <target> and returns the old
+ * value that was in <target>.
+ *
+ * This routine can be used from both task and interrupt level.
+ *
+ * @return Contents of <target> before the atomic operation
+ *
+ * ERRNO: N/A
+ *
+ * atomic_val_t atomic_clear
+ *    (
+ *    atomic_t *target	/@ memory location to clear @/
+ *    )
+ */
+
+SECTION_SUBSEC_FUNC(TEXT, atomic_clear_set, atomic_clear)
+	mov_s r1, 0
+	/* fall through into atomic_set */
+
+/**
+ *
+ * @brief Atomically set a memory location
+ *
+ * This routine atomically sets the contents of <target> to <value> and returns
+ * the old value that was in <target>.
+ *
+ * This routine can be used from both task and interrupt level.
+ *
+ * @return Contents of <target> before the atomic operation
+ *
+ * ERRNO: N/A
+ *
+ * atomic_val_t atomic_set
+ *    (
+ *    atomic_t *target,	/@ memory location to set @/
+ *    atomic_val_t value	/@ set with this value @/
+ *    )
+ *
+ */
+
+SECTION_SUBSEC_FUNC(TEXT, atomic_clear_set, atomic_set)
+
+	ex r1, [r0]		/* swap new value with old value */
+
+	j_s.d [blink]
+	mov_s r0, r1		/* return old value */
+
+/**
+ *
+ * @brief Get the value of a shared memory atomically
+ *
+ * This routine atomically retrieves the value in *target
+ *
+ * atomic_val_t atomic_get
+ *     (
+ *     atomic_t *target    /@ address of atom to be retrieved @/
+ *     )
+ *
+ * RETURN: value read from address target.
+ *
+ */
+
+SECTION_FUNC(TEXT, atomic_get)
+	ld_s r0, [r0, 0]
+	j_s [blink]
+
+/**
+ *
+ * @brief Atomically increment a memory location
+ *
+ * This routine atomically increments the value in <target>.  The operation is
+ * done using unsigned integer arithmetic.  Various CPU architectures may impose
+ * restrictions with regards to the alignment and cache attributes of the
+ * atomic_t type.
+ *
+ * This routine can be used from both task and interrupt level.
+ *
+ * @return Contents of <target> before the atomic operation
+ *
+ * ERRNO: N/A
+ *
+ * atomic_val_t atomic_inc
+ *    (
+ *    atomic_t *target,	/@ memory location to increment @/
+ *    )
+ *
+ */
+
+SECTION_SUBSEC_FUNC(TEXT, atomic_inc_add, atomic_inc)
+	mov_s r1, 1
+	/* fall through into atomic_add */
+
+/**
+ *
+ * @brief Atomically add a value to a memory location
+ *
+ * This routine atomically adds the contents of <target> and <value>, placing
+ * the result in <target>. The operation is done using signed integer arithmetic.
+ * Various CPU architectures may impose restrictions with regards to the
+ * alignment and cache attributes of the atomic_t type.
+ *
+ * This routine can be used from both task and interrupt level.
+ *
+ * @return Contents of <target> before the atomic operation
+ *
+ * ERRNO: N/A
+ *
+ * atomic_val_t atomic_add
+ *    (
+ *    atomic_t *target,	/@ memory location to add to @/
+ *    atomic_val_t value	/@ value to add @/
+ *    )
+ */
+
+SECTION_SUBSEC_FUNC(TEXT, atomic_inc_add, atomic_add)
+
+	llock r2, [r0]	/* load old value and mark exclusive access */
+	add_s r3, r1, r2
+	scond r3, [r0]	/* try to store new value */
+
+	/* STATUS32.Z = 1 if successful */
+
+	bne_s atomic_add  /* if store is not successful, retry */
+
+	j_s.d [blink]
+	mov_s r0, r2		/* return old value */
+
+/**
+ *
+ * @brief Atomically decrement a memory location
+ *
+ * This routine atomically decrements the value in <target>.  The operation is
+ * done using unsigned integer arithmetic.  Various CPU architectures may impose
+ * restrictions with regards to the alignment and cache attributes of the
+ * atomic_t type.
+ *
+ * This routine can be used from both task and interrupt level.
+ *
+ * @return Contents of <target> before the atomic operation
+ *
+ * ERRNO: N/A
+ *
+ * atomic_val_t atomic_dec
+ *    (
+ *    atomic_t *target,	/@ memory location to decrement @/
+ *    )
+ *
+ */
+
+SECTION_SUBSEC_FUNC(TEXT, atomic_dec_sub, atomic_dec)
+	mov_s r1, 1
+	/* fall through into atomic_sub */
+
+/**
+ *
+ * @brief Atomically subtract a value from a memory location
+ *
+ * This routine atomically subtracts <value> from the contents of <target>,
+ * placing the result in <target>.  The operation is done using signed integer
+ * arithmetic. Various CPU architectures may impose restrictions with regards to
+ * the alignment and cache attributes of the atomic_t type.
+ *
+ * This routine can be used from both task and interrupt level.
+ *
+ * @return Contents of <target> before the atomic operation
+ *
+ * ERRNO: N/A
+ *
+ * atomic_val_t atomic_sub
+ *    (
+ *    atomic_t *target,	/@ memory location to subtract from @/
+ *    atomic_val_t value	/@ value to subtract @/
+ *    )
+ *
+ */
+
+SECTION_SUBSEC_FUNC(TEXT, atomic_dec_sub, atomic_sub)
+
+	llock r2, [r0]	/* load old value and mark exclusive access */
+	sub r3, r2, r1
+	scond r3, [r0]	/* try to store new value */
+
+	/* STATUS32.Z = 1 if successful */
+
+	bne_s atomic_sub  /* if store is not successful, retry */
+
+	j_s.d [blink]
+	mov_s r0, r2		/* return old value */
+
+/**
+ *
+ * @brief Atomically perform a bitwise NAND on a memory location
+ *
+ * This routine atomically performs a bitwise NAND operation of the contents of
+ * <target> and <value>, placing the result in <target>.
+ * Various CPU architectures may impose restrictions with regards to the
+ * alignment and cache attributes of the atomic_t type.
+ *
+ * This routine can be used from both task and interrupt level.
+ *
+ * @return Contents of <target> before the atomic operation
+ *
+ * ERRNO: N/A
+ *
+ * atomic_val_t atomic_nand
+ *    (
+ *    atomic_t *target,	/@ memory location to NAND @/
+ *    atomic_val_t value	/@ NAND with this value @/
+ *    )
+ *
+ */
+
+SECTION_FUNC(TEXT, atomic_nand)
+
+	llock r2, [r0]	/* load old value and mark exclusive access */
+	and r3, r1, r2
+	not r3, r3
+	scond r3, [r0]	/* try to store new value */
+
+	/* STATUS32.Z = 1 if successful */
+
+	bne_s atomic_nand  /* if store is not successful, retry */
+
+	j_s.d [blink]
+	mov_s r0, r2		/* return old value */
+
+/**
+ *
+ * @brief Atomically perform a bitwise AND on a memory location
+ *
+ * This routine atomically performs a bitwise AND operation of the contents of
+ * <target> and <value>, placing the result in <target>.
+ * Various CPU architectures may impose restrictions with regards to the
+ * alignment and cache attributes of the atomic_t type.
+ *
+ * This routine can be used from both task and interrupt level.
+ *
+ * @return Contents of <target> before the atomic operation
+ *
+ * ERRNO: N/A
+ *
+ * atomic_val_t atomic_and
+ *    (
+ *    atomic_t *target,	/@ memory location to AND @/
+ *    atomic_val_t value	/@ AND with this value @/
+ *    )
+ *
+ */
+
+SECTION_FUNC(TEXT, atomic_and)
+
+	llock r2, [r0]	/* load old value and mark exclusive access */
+	and r3, r1, r2
+	scond r3, [r0]	/* try to store new value */
+
+	/* STATUS32.Z = 1 if successful */
+
+	bne_s atomic_and  /* if store is not successful, retry */
+
+	j_s.d [blink]
+	mov_s r0, r2		/* return old value */
+
+/**
+ *
+ * @brief Atomically perform a bitwise OR on memory location
+ *
+ * This routine atomically performs a bitwise OR operation of the contents of
+ * <target> and <value>, placing the result in <target>.
+ * Various CPU architectures may impose restrictions with regards to the
+ * alignment and cache attributes of the atomic_t type.
+ *
+ * This routine can be used from both task and interrupt level.
+ *
+ * @return Contents of <target> before the atomic operation
+ *
+ * ERRNO: N/A
+ *
+ * atomic_val_t atomic_or
+ *    (
+ *    atomic_t *target,	/@ memory location to OR @/
+ *    atomic_val_t value	/@ OR with this value @/
+ *    )
+ *
+ */
+
+SECTION_FUNC(TEXT, atomic_or)
+
+	llock r2, [r0]	/* load old value and mark exclusive access */
+	or r3, r1, r2
+	scond r3, [r0]	/* try to store new value */
+
+	/* STATUS32.Z = 1 if successful */
+
+	bne_s atomic_or  /* if store is not successful, retry */
+
+	j_s.d [blink]
+	mov_s r0, r2		/* return old value */
+
+/**
+ *
+ * @brief Atomically perform a bitwise XOR on a memory location
+ *
+ * This routine atomically performs a bitwise XOR operation of the contents of
+ * <target> and <value>, placing the result in <target>.
+ * Various CPU architectures may impose restrictions with regards to the
+ * alignment and cache attributes of the atomic_t type.
+ *
+ * This routine can be used from both task and interrupt level.
+ *
+ * @return Contents of <target> before the atomic operation
+ *
+ * ERRNO: N/A
+ *
+ * atomic_val_t atomic_xor
+ *    (
+ *    atomic_t *target,	/@ memory location to XOR @/
+ *    atomic_val_t value	/@ XOR with this value @/
+ *    )
+ *
+ */
+
+SECTION_FUNC(TEXT, atomic_xor)
+
+	llock r2, [r0]	/* load old value and mark exclusive access */
+	xor r3, r1, r2
+	scond r3, [r0]	/* try to store new value */
+
+	/* STATUS32.Z = 1 if successful */
+
+	bne_s atomic_xor  /* if store is not successful, retry */
+
+	j_s.d [blink]
+	mov_s r0, r2		/* return old value */
+
+/**
+ *
+ * @brief Atomically compare-and-swap the contents of a memory location
+ *
+ * This routine performs an atomic compare-and-swap. testing that the contents of
+ * <target> contains <oldValue>, and if it does, setting the value of <target>
+ * to <newValue>. Various CPU architectures may impose restrictions with regards
+ * to the alignment and cache attributes of the atomic_t type.
+ *
+ * This routine can be used from both task and interrupt level.
+ *
+ * @return 1 if the swap is actually executed, 0 otherwise.
+ *
+ * ERRNO: N/A
+ *
+ * int atomic_cas
+ *    (
+ *    atomic_t *target,	    /@ memory location to compare-and-swap @/
+ *    atomic_val_t oldValue,	/@ compare to this value @/
+ *    atomic_val_t newValue,	/@ swap with this value @/
+ *    )
+ *
+ */
+
+SECTION_FUNC(TEXT, atomic_cas)
+
+	llock r3, [r0]	/* load old value and mark exclusive access */
+	cmp_s r1, r3
+
+	bne_s nanoAtomicCas_fail
+
+	scond r2, [r0]	/* try to store new value */
+
+	/* STATUS32.Z = 1 if successful */
+
+	bne_s atomic_cas  /* if store is not successful, retry */
+
+	j_s.d [blink]
+	mov_s r0, 1		/* return TRUE */
+
+	/* failed comparison */
+nanoAtomicCas_fail:
+	scond r1, [r0]	/* write old value to clear the access lock */
+	j_s.d [blink]
+	mov_s r0, 0	/* return FALSE */

arch/arc/core/cache.c

@@ -13,20 +13,27 @@
  * This module contains functions for manipulation of the d-cache.
  */
 
-#include <zephyr/kernel.h>
-#include <zephyr/arch/cpu.h>
-#include <zephyr/sys/util.h>
-#include <zephyr/toolchain.h>
-#include <zephyr/cache.h>
-#include <zephyr/linker/linker-defs.h>
-#include <zephyr/arch/arc/v2/aux_regs.h>
+#include <kernel.h>
+#include <arch/cpu.h>
+#include <misc/util.h>
+#include <toolchain.h>
+#include <cache.h>
+#include <linker/linker-defs.h>
+#include <arch/arc/v2/aux_regs.h>
 #include <kernel_internal.h>
-#include <zephyr/sys/__assert.h>
-#include <zephyr/init.h>
-#include <stdbool.h>
+#include <misc/__assert.h>
+#include <init.h>
 
-#if defined(CONFIG_DCACHE_LINE_SIZE_DETECT)
-size_t sys_cache_line_size;
+#if defined(CONFIG_CACHE_FLUSHING)
+
+#if (CONFIG_CACHE_LINE_SIZE == 0) && !defined(CONFIG_CACHE_LINE_SIZE_DETECT)
+#error Cannot use this implementation with a cache line size of 0
+#endif
+
+#if defined(CONFIG_CACHE_LINE_SIZE_DETECT)
+#define DCACHE_LINE_SIZE sys_cache_line_size
+#else
+#define DCACHE_LINE_SIZE CONFIG_CACHE_LINE_SIZE
 #endif
 
 #define DC_CTRL_DC_ENABLE            0x0  /* enable d-cache */
@@ -40,188 +47,121 @@ size_t sys_cache_line_size;
 #define DC_CTRL_INDIRECT_ACCESS      0x20 /* indirect access mode */
 #define DC_CTRL_OP_SUCCEEDED         0x4  /* d-cache operation succeeded */
 
-static bool dcache_available(void)
+
+static int dcache_available(void)
 {
-	unsigned long val = z_arc_v2_aux_reg_read(_ARC_V2_D_CACHE_BUILD);
+	unsigned long val = _arc_v2_aux_reg_read(_ARC_V2_D_CACHE_BUILD);
 
 	val &= 0xff; /* extract version */
-	return (val == 0) ? false : true;
+	return (val == 0)?0:1;
 }
 
-static void dcache_dc_ctrl(uint32_t dcache_en_mask)
+static void dcache_dc_ctrl(u32_t dcache_en_mask)
 {
-	if (dcache_available()) {
-		z_arc_v2_aux_reg_write(_ARC_V2_DC_CTRL, dcache_en_mask);
-	}
+	if (!dcache_available())
+		return;
+	_arc_v2_aux_reg_write(_ARC_V2_DC_CTRL, dcache_en_mask);
 }
 
-void arch_dcache_enable(void)
+static void dcache_enable(void)
 {
 	dcache_dc_ctrl(DC_CTRL_DC_ENABLE);
 }
 
-void arch_dcache_disable(void)
-{
-	/* nothing */
-}
 
-int arch_dcache_flush_range(void *start_addr_ptr, size_t size)
+/**
+ *
+ * @brief Flush multiple d-cache lines to memory
+ *
+ * No alignment is required for either <start_addr> or <size>, but since
+ * dcache_flush_mlines() iterates on the d-cache lines, a cache line
+ * alignment for both is optimal.
+ *
+ * The d-cache line size is specified either via the CONFIG_CACHE_LINE_SIZE
+ * kconfig option or it is detected at runtime.
+ *
+ * @param start_addr the pointer to start the multi-line flush
+ * @param size the number of bytes that are to be flushed
+ *
+ * @return N/A
+ */
+static void dcache_flush_mlines(u32_t start_addr, u32_t size)
 {
-	size_t line_size = sys_cache_data_line_size_get();
-	uintptr_t start_addr = (uintptr_t)start_addr_ptr;
-	uintptr_t end_addr;
+	u32_t end_addr;
 	unsigned int key;
 
-	if (!dcache_available() || (size == 0U) || line_size == 0U) {
-		return -ENOTSUP;
+	if (!dcache_available() || (size == 0)) {
+		return;
 	}
 
-	end_addr = start_addr + size;
+	end_addr = start_addr + size - 1;
+	start_addr &= (u32_t)(~(DCACHE_LINE_SIZE - 1));
 
-	start_addr = ROUND_DOWN(start_addr, line_size);
-
-	key = arch_irq_lock(); /* --enter critical section-- */
+	key = irq_lock(); /* --enter critical section-- */
 
 	do {
-		z_arc_v2_aux_reg_write(_ARC_V2_DC_FLDL, start_addr);
-		__builtin_arc_nop();
-		__builtin_arc_nop();
-		__builtin_arc_nop();
+		_arc_v2_aux_reg_write(_ARC_V2_DC_FLDL, start_addr);
+		__asm__ volatile("nop_s");
+		__asm__ volatile("nop_s");
+		__asm__ volatile("nop_s");
 		/* wait for flush completion */
 		do {
-			if ((z_arc_v2_aux_reg_read(_ARC_V2_DC_CTRL) &
-			     DC_CTRL_FLUSH_STATUS) == 0) {
+			if ((_arc_v2_aux_reg_read(_ARC_V2_DC_CTRL) &
+				DC_CTRL_FLUSH_STATUS) == 0)
 				break;
-			}
 		} while (1);
-		start_addr += line_size;
-	} while (start_addr < end_addr);
+		start_addr += DCACHE_LINE_SIZE;
+	} while (start_addr <= end_addr);
 
-	arch_irq_unlock(key); /* --exit critical section-- */
+	irq_unlock(key); /* --exit critical section-- */
 
-	return 0;
 }
 
-int arch_dcache_invd_range(void *start_addr_ptr, size_t size)
+
+/**
+ *
+ * @brief Flush d-cache lines to main memory
+ *
+ * No alignment is required for either <virt> or <size>, but since
+ * sys_cache_flush() iterates on the d-cache lines, a d-cache line alignment for
+ * both is optimal.
+ *
+ * The d-cache line size is specified either via the CONFIG_CACHE_LINE_SIZE
+ * kconfig option or it is detected at runtime.
+ *
+ * @param start_addr the pointer to start the multi-line flush
+ * @param size the number of bytes that are to be flushed
+ *
+ * @return N/A
+ */
+
+void sys_cache_flush(vaddr_t start_addr, size_t size)
 {
-	size_t line_size = sys_cache_data_line_size_get();
-	uintptr_t start_addr = (uintptr_t)start_addr_ptr;
-	uintptr_t end_addr;
-	unsigned int key;
-
-	if (!dcache_available() || (size == 0U) || line_size == 0U) {
-		return -ENOTSUP;
-	}
-	end_addr = start_addr + size;
-	start_addr = ROUND_DOWN(start_addr, line_size);
-
-	key = arch_irq_lock(); /* -enter critical section- */
-
-	do {
-		z_arc_v2_aux_reg_write(_ARC_V2_DC_IVDL, start_addr);
-		__builtin_arc_nop();
-		__builtin_arc_nop();
-		__builtin_arc_nop();
-		start_addr += line_size;
-	} while (start_addr < end_addr);
-	irq_unlock(key); /* -exit critical section- */
-
-	return 0;
+	dcache_flush_mlines((u32_t)start_addr, (u32_t)size);
 }
 
-int arch_dcache_flush_and_invd_range(void *start_addr_ptr, size_t size)
-{
-	return -ENOTSUP;
-}
 
-int arch_dcache_flush_all(void)
-{
-	return -ENOTSUP;
-}
-
-int arch_dcache_invd_all(void)
-{
-	return -ENOTSUP;
-}
-
-int arch_dcache_flush_and_invd_all(void)
-{
-	return -ENOTSUP;
-}
-
-#if defined(CONFIG_DCACHE_LINE_SIZE_DETECT)
+#if defined(CONFIG_CACHE_LINE_SIZE_DETECT)
+size_t sys_cache_line_size;
 static void init_dcache_line_size(void)
 {
-	uint32_t val;
+	u32_t val;
 
-	val = z_arc_v2_aux_reg_read(_ARC_V2_D_CACHE_BUILD);
-	__ASSERT((val&0xff) != 0U, "d-cache is not present");
+	val = _arc_v2_aux_reg_read(_ARC_V2_D_CACHE_BUILD);
+	__ASSERT((val&0xff) != 0, "d-cache is not present");
 	val = ((val>>16) & 0xf) + 1;
-	val *= 16U;
+	val *= 16;
 	sys_cache_line_size = (size_t) val;
 }
-
-size_t arch_dcache_line_size_get(void)
-{
-	return sys_cache_line_size;
-}
 #endif
 
-void arch_icache_enable(void)
+static int init_dcache(struct device *unused)
 {
-	/* nothing */
-}
+	ARG_UNUSED(unused);
 
-void arch_icache_disable(void)
-{
-	/* nothing */
-}
+	dcache_enable();
 
-int arch_icache_flush_all(void)
-{
-	return -ENOTSUP;
-}
-
-int arch_icache_invd_all(void)
-{
-	return -ENOTSUP;
-}
-
-int arch_icache_flush_and_invd_all(void)
-{
-	return -ENOTSUP;
-}
-
-int arch_icache_flush_range(void *addr, size_t size)
-{
-	ARG_UNUSED(addr);
-	ARG_UNUSED(size);
-
-	return -ENOTSUP;
-}
-
-int arch_icache_invd_range(void *addr, size_t size)
-{
-	ARG_UNUSED(addr);
-	ARG_UNUSED(size);
-
-	return -ENOTSUP;
-}
-
-int arch_icache_flush_and_invd_range(void *addr, size_t size)
-{
-	ARG_UNUSED(addr);
-	ARG_UNUSED(size);
-
-	return -ENOTSUP;
-}
-
-static int init_dcache(void)
-{
-
-	arch_dcache_enable();
-
-#if defined(CONFIG_DCACHE_LINE_SIZE_DETECT)
+#if defined(CONFIG_CACHE_LINE_SIZE_DETECT)
 	init_dcache_line_size();
 #endif
 
@@ -229,3 +169,6 @@ static int init_dcache(void)
 }
 
 SYS_INIT(init_dcache, PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);
+
+#endif /* CONFIG_CACHE_FLUSHING */
+

arch/arc/core/cpu_idle.S

@@ -11,19 +11,18 @@
  * CPU power management routines.
  */
 
-#include <zephyr/kernel_structs.h>
+#include <kernel_structs.h>
 #include <offsets_short.h>
-#include <zephyr/toolchain.h>
-#include <zephyr/linker/sections.h>
-#include <zephyr/arch/cpu.h>
-#include <zephyr/arch/arc/asm-compat/assembler.h>
+#include <toolchain.h>
+#include <linker/sections.h>
+#include <arch/cpu.h>
 
-GTEXT(arch_cpu_idle)
-GTEXT(arch_cpu_atomic_idle)
-GDATA(z_arc_cpu_sleep_mode)
+GTEXT(k_cpu_idle)
+GTEXT(k_cpu_atomic_idle)
+GDATA(k_cpu_sleep_mode)
 
-SECTION_VAR(BSS, z_arc_cpu_sleep_mode)
-	.align 4
+SECTION_VAR(BSS, k_cpu_sleep_mode)
+	.balign 4
 	.word 0
 
 /*
@@ -34,16 +33,15 @@ SECTION_VAR(BSS, z_arc_cpu_sleep_mode)
  * void nanCpuIdle(void)
  */
 
-SECTION_FUNC(TEXT, arch_cpu_idle)
+SECTION_FUNC(TEXT, k_cpu_idle)
 
-#ifdef CONFIG_TRACING
-	PUSHR blink
-	jl    sys_trace_idle
-	POPR blink
+#ifdef CONFIG_KERNEL_EVENT_LOGGER_SLEEP
+	push_s blink
+	jl    _sys_k_event_logger_enter_sleep
+	pop_s blink
 #endif
 
-	/* z_arc_cpu_sleep_mode is 32 bit despite of platform bittnes */
-	ld r1, [z_arc_cpu_sleep_mode]
+	ld r1, [k_cpu_sleep_mode]
 	or r1, r1, (1 << 4) /* set IRQ-enabled bit */
 	sleep r1
 	j_s [blink]
@@ -54,18 +52,17 @@ SECTION_FUNC(TEXT, arch_cpu_idle)
  *
  * This function exits with interrupts restored to <key>.
  *
- * void arch_cpu_atomic_idle(unsigned int key)
+ * void k_cpu_atomic_idle(unsigned int key)
  */
-SECTION_FUNC(TEXT, arch_cpu_atomic_idle)
+SECTION_FUNC(TEXT, k_cpu_atomic_idle)
 
-#ifdef CONFIG_TRACING
-	PUSHR blink
-	jl    sys_trace_idle
-	POPR blink
+#ifdef CONFIG_KERNEL_EVENT_LOGGER_SLEEP
+	push_s blink
+	jl    _sys_k_event_logger_enter_sleep
+	pop_s blink
 #endif
 
-	/* z_arc_cpu_sleep_mode is 32 bit despite of platform bittnes */
-	ld r1, [z_arc_cpu_sleep_mode]
+	ld r1, [k_cpu_sleep_mode]
 	or r1, r1, (1 << 4) /* set IRQ-enabled bit */
 	sleep r1
 	j_s.d [blink]

arch/arc/core/dsp/Kconfig

@@ -1,75 +0,0 @@
-# Digital Signal Processing (DSP) configuration options
-
-# Copyright (c) 2022 Synopsys
-# SPDX-License-Identifier: Apache-2.0
-
-config ARC_HAS_DSP
-	bool
-	help
-	  This option is enabled when the ARC CPU has hardware DSP unit.
-
-menu "ARC DSP Options"
-depends on ARC_HAS_DSP
-
-config ARC_DSP
-	bool "digital signal processing (DSP)"
-	help
-	  This option enables DSP and DSP instructions.
-
-config ARC_DSP_TURNED_OFF
-	bool "Turn off DSP if it presents"
-	depends on !ARC_DSP
-	help
-	  This option disables DSP block via resetting DSP_CRTL register.
-
-config ARC_DSP_SHARING
-	bool "DSP register sharing"
-	depends on ARC_DSP && MULTITHREADING
-	select ARC_HAS_ACCL_REGS
-	help
-	  This option enables preservation of the hardware DSP registers
-	  across context switches to allow multiple threads to perform concurrent
-	  DSP operations.
-
-config ARC_DSP_BFLY_SHARING
-	bool "ARC complex DSP operation"
-	depends on ARC_DSP && CPU_ARCEM
-	help
-	  This option is to enable Zephyr to store and restore DSP_BFLY0
-	  and FFT_CTRL registers during context switch. This option is
-	  only required when butterfly instructions are used in
-	  multi-thread.
-
-config ARC_XY_ENABLE
-	bool "ARC address generation unit registers"
-	help
-	  Processors with XY memory and AGU registers can configure this
-	  option to accelerate DSP instrctions.
-
-config ARC_AGU_SHARING
-	bool "ARC address generation unit register sharing"
-	depends on ARC_XY_ENABLE && MULTITHREADING
-	default y if ARC_DSP_SHARING
-	help
-	  This option enables preservation of the hardware AGU registers
-	  across context switches to allow multiple threads to perform concurrent
-	  operations on XY memory. Save and restore small size AGU registers is
-	  set as default, including 4 address pointers regs, 2 address offset regs
-	  and 4 modifiers regs.
-
-config ARC_AGU_MEDIUM
-	bool "ARC AGU medium size register"
-	depends on ARC_AGU_SHARING
-	help
-	  Save and restore medium AGU registers, including 8 address pointers regs,
-	  4 address offset regs and 12 modifiers regs.
-
-config ARC_AGU_LARGE
-	bool "ARC AGU large size register"
-	depends on ARC_AGU_SHARING
-	select ARC_AGU_MEDIUM
-	help
-	  Save and restore large AGU registers, including 12 address pointers regs,
-	  8 address offset regs and 24 modifiers regs.
-
-endmenu

arch/arc/core/dsp/dsp_offsets.c

@@ -1,70 +0,0 @@
-/*
- * Copyright (c) 2022 Synopsys.
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-/**
- * @file
- * @brief ARCv2 DSP and AGU structure member offset definition file
- *
- */
-#ifdef CONFIG_ARC_DSP_SHARING
-GEN_OFFSET_SYM(_callee_saved_stack_t, dsp_ctrl);
-GEN_OFFSET_SYM(_callee_saved_stack_t, acc0_glo);
-GEN_OFFSET_SYM(_callee_saved_stack_t, acc0_ghi);
-#ifdef CONFIG_ARC_DSP_BFLY_SHARING
-GEN_OFFSET_SYM(_callee_saved_stack_t, dsp_bfly0);
-GEN_OFFSET_SYM(_callee_saved_stack_t, dsp_fft_ctrl);
-#endif
-#endif
-#ifdef CONFIG_ARC_AGU_SHARING
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_ap0);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_ap1);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_ap2);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_ap3);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_os0);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_os1);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_mod0);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_mod1);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_mod2);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_mod3);
-#ifdef CONFIG_ARC_AGU_MEDIUM
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_ap4);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_ap5);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_ap6);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_ap7);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_os2);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_os3);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_mod4);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_mod5);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_mod6);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_mod7);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_mod8);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_mod9);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_mod10);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_mod11);
-#endif
-#ifdef CONFIG_ARC_AGU_LARGE
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_ap8);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_ap9);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_ap10);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_ap11);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_os4);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_os5);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_os6);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_os7);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_mod12);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_mod13);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_mod14);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_mod15);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_mod16);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_mod17);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_mod18);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_mod19);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_mod20);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_mod21);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_mod22);
-GEN_OFFSET_SYM(_callee_saved_stack_t, agu_mod23);
-#endif
-#endif

arch/arc/core/dsp/swap_dsp_macros.h

@@ -1,269 +0,0 @@
-/*
- * Copyright (c) 2022 Synopsys.
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-/**
- * @file
- * @brief save and load macro for ARCv2 DSP and AGU regs
- *
- */
-.macro _save_dsp_regs
-#ifdef CONFIG_ARC_DSP_SHARING
-	ld_s r13, [r2, ___thread_base_t_user_options_OFFSET]
-	bbit0 r13, K_DSP_IDX, dsp_skip_save
-	lr r13, [_ARC_V2_DSP_CTRL]
-	st_s r13, [sp, ___callee_saved_stack_t_dsp_ctrl_OFFSET]
-	lr r13, [_ARC_V2_ACC0_GLO]
-	st_s r13, [sp, ___callee_saved_stack_t_acc0_glo_OFFSET]
-	lr r13, [_ARC_V2_ACC0_GHI]
-	st_s r13, [sp, ___callee_saved_stack_t_acc0_ghi_OFFSET]
-#ifdef CONFIG_ARC_DSP_BFLY_SHARING
-	lr r13, [_ARC_V2_DSP_BFLY0]
-	st_s r13, [sp, ___callee_saved_stack_t_dsp_bfly0_OFFSET]
-	lr r13, [_ARC_V2_DSP_FFT_CTRL]
-	st_s r13, [sp, ___callee_saved_stack_t_dsp_fft_ctrl_OFFSET]
-#endif
-#endif
-dsp_skip_save :
-#ifdef CONFIG_ARC_AGU_SHARING
-	_save_agu_regs
-#endif
-.endm
-
-.macro _save_agu_regs
-#ifdef CONFIG_ARC_AGU_SHARING
-	ld_s r13, [r2, ___thread_base_t_user_options_OFFSET]
-	btst r13, K_AGU_IDX
-
-	jeq agu_skip_save
-
-	lr r13, [_ARC_V2_AGU_AP0]
-	st r13, [sp, ___callee_saved_stack_t_agu_ap0_OFFSET]
-	lr r13, [_ARC_V2_AGU_AP1]
-	st r13, [sp, ___callee_saved_stack_t_agu_ap1_OFFSET]
-	lr r13, [_ARC_V2_AGU_AP2]
-	st r13, [sp, ___callee_saved_stack_t_agu_ap2_OFFSET]
-	lr r13, [_ARC_V2_AGU_AP3]
-	st r13, [sp, ___callee_saved_stack_t_agu_ap3_OFFSET]
-	lr r13, [_ARC_V2_AGU_OS0]
-	st r13, [sp, ___callee_saved_stack_t_agu_os0_OFFSET]
-	lr r13, [_ARC_V2_AGU_OS1]
-	st r13, [sp, ___callee_saved_stack_t_agu_os1_OFFSET]
-	lr r13, [_ARC_V2_AGU_MOD0]
-	st r13, [sp, ___callee_saved_stack_t_agu_mod0_OFFSET]
-	lr r13, [_ARC_V2_AGU_MOD1]
-	st r13, [sp, ___callee_saved_stack_t_agu_mod1_OFFSET]
-	lr r13, [_ARC_V2_AGU_MOD2]
-	st r13, [sp, ___callee_saved_stack_t_agu_mod2_OFFSET]
-	lr r13, [_ARC_V2_AGU_MOD3]
-	st r13, [sp, ___callee_saved_stack_t_agu_mod3_OFFSET]
-#ifdef CONFIG_ARC_AGU_MEDIUM
-	lr r13, [_ARC_V2_AGU_AP4]
-	st r13, [sp, ___callee_saved_stack_t_agu_ap4_OFFSET]
-	lr r13, [_ARC_V2_AGU_AP5]
-	st r13, [sp, ___callee_saved_stack_t_agu_ap5_OFFSET]
-	lr r13, [_ARC_V2_AGU_AP6]
-	st r13, [sp, ___callee_saved_stack_t_agu_ap6_OFFSET]
-	lr r13, [_ARC_V2_AGU_AP7]
-	st r13, [sp, ___callee_saved_stack_t_agu_ap7_OFFSET]
-	lr r13, [_ARC_V2_AGU_OS2]
-	st r13, [sp, ___callee_saved_stack_t_agu_os2_OFFSET]
-	lr r13, [_ARC_V2_AGU_OS3]
-	st r13, [sp, ___callee_saved_stack_t_agu_os3_OFFSET]
-	lr r13, [_ARC_V2_AGU_MOD4]
-	st r13, [sp, ___callee_saved_stack_t_agu_mod4_OFFSET]
-	lr r13, [_ARC_V2_AGU_MOD5]
-	st r13, [sp, ___callee_saved_stack_t_agu_mod5_OFFSET]
-	lr r13, [_ARC_V2_AGU_MOD6]
-	st r13, [sp, ___callee_saved_stack_t_agu_mod6_OFFSET]
-	lr r13, [_ARC_V2_AGU_MOD7]
-	st r13, [sp, ___callee_saved_stack_t_agu_mod7_OFFSET]
-	lr r13, [_ARC_V2_AGU_MOD8]
-	st r13, [sp, ___callee_saved_stack_t_agu_mod8_OFFSET]
-	lr r13, [_ARC_V2_AGU_MOD9]
-	st r13, [sp, ___callee_saved_stack_t_agu_mod9_OFFSET]
-	lr r13, [_ARC_V2_AGU_MOD10]
-	st r13, [sp, ___callee_saved_stack_t_agu_mod10_OFFSET]
-	lr r13, [_ARC_V2_AGU_MOD11]
-	st r13, [sp, ___callee_saved_stack_t_agu_mod11_OFFSET]
-#endif
-#ifdef CONFIG_ARC_AGU_LARGE
-	lr r13, [_ARC_V2_AGU_AP8]
-	st r13, [sp, ___callee_saved_stack_t_agu_ap8_OFFSET]
-	lr r13, [_ARC_V2_AGU_AP9]
-	st r13, [sp, ___callee_saved_stack_t_agu_ap9_OFFSET]
-	lr r13, [_ARC_V2_AGU_AP10]
-	st r13, [sp, ___callee_saved_stack_t_agu_ap10_OFFSET]
-	lr r13, [_ARC_V2_AGU_AP11]
-	st r13, [sp, ___callee_saved_stack_t_agu_ap11_OFFSET]
-	lr r13, [_ARC_V2_AGU_OS4]
-	st r13, [sp, ___callee_saved_stack_t_agu_os4_OFFSET]
-	lr r13, [_ARC_V2_AGU_OS5]
-	st r13, [sp, ___callee_saved_stack_t_agu_os5_OFFSET]
-	lr r13, [_ARC_V2_AGU_OS6]
-	st r13, [sp, ___callee_saved_stack_t_agu_os6_OFFSET]
-	lr r13, [_ARC_V2_AGU_OS7]
-	st r13, [sp, ___callee_saved_stack_t_agu_os7_OFFSET]
-	lr r13, [_ARC_V2_AGU_MOD12]
-	st r13, [sp, ___callee_saved_stack_t_agu_mod12_OFFSET]
-	lr r13, [_ARC_V2_AGU_MOD13]
-	st r13, [sp, ___callee_saved_stack_t_agu_mod13_OFFSET]
-	lr r13, [_ARC_V2_AGU_MOD14]
-	st r13, [sp, ___callee_saved_stack_t_agu_mod14_OFFSET]
-	lr r13, [_ARC_V2_AGU_MOD15]
-	st r13, [sp, ___callee_saved_stack_t_agu_mod15_OFFSET]
-	lr r13, [_ARC_V2_AGU_MOD16]
-	st r13, [sp, ___callee_saved_stack_t_agu_mod16_OFFSET]
-	lr r13, [_ARC_V2_AGU_MOD17]
-	st r13, [sp, ___callee_saved_stack_t_agu_mod17_OFFSET]
-	lr r13, [_ARC_V2_AGU_MOD18]
-	st r13, [sp, ___callee_saved_stack_t_agu_mod18_OFFSET]
-	lr r13, [_ARC_V2_AGU_MOD19]
-	st r13, [sp, ___callee_saved_stack_t_agu_mod19_OFFSET]
-	lr r13, [_ARC_V2_AGU_MOD20]
-	st r13, [sp, ___callee_saved_stack_t_agu_mod20_OFFSET]
-	lr r13, [_ARC_V2_AGU_MOD21]
-	_st32_huge_offset r13, sp, ___callee_saved_stack_t_agu_mod21_OFFSET, r1
-	lr r13, [_ARC_V2_AGU_MOD22]
-	_st32_huge_offset r13, sp, ___callee_saved_stack_t_agu_mod22_OFFSET, r1
-	lr r13, [_ARC_V2_AGU_MOD23]
-	_st32_huge_offset r13, sp, ___callee_saved_stack_t_agu_mod23_OFFSET, r1
-#endif
-#endif
-agu_skip_save :
-.endm
-
-.macro _load_dsp_regs
-#ifdef CONFIG_ARC_DSP_SHARING
-	ld_s r13, [r2, ___thread_base_t_user_options_OFFSET]
-	bbit0 r13, K_DSP_IDX, dsp_skip_load
-	ld_s r13, [sp, ___callee_saved_stack_t_dsp_ctrl_OFFSET]
-	sr r13, [_ARC_V2_DSP_CTRL]
-	ld_s r13, [sp, ___callee_saved_stack_t_acc0_glo_OFFSET]
-	sr r13, [_ARC_V2_ACC0_GLO]
-	ld_s r13, [sp, ___callee_saved_stack_t_acc0_ghi_OFFSET]
-	sr r13, [_ARC_V2_ACC0_GHI]
-#ifdef CONFIG_ARC_DSP_BFLY_SHARING
-	ld_s r13, [sp, ___callee_saved_stack_t_dsp_bfly0_OFFSET]
-	sr r13, [_ARC_V2_DSP_BFLY0]
-	ld_s r13, [sp, ___callee_saved_stack_t_dsp_fft_ctrl_OFFSET]
-	sr r13, [_ARC_V2_DSP_FFT_CTRL]
-#endif
-#endif
-dsp_skip_load :
-#ifdef CONFIG_ARC_AGU_SHARING
-	_load_agu_regs
-#endif
-.endm
-
-.macro _load_agu_regs
-#ifdef CONFIG_ARC_AGU_SHARING
-	ld_s r13, [r2, ___thread_base_t_user_options_OFFSET]
-	btst r13, K_AGU_IDX
-
-	jeq agu_skip_load
-
-	ld r13, [sp, ___callee_saved_stack_t_agu_ap0_OFFSET]
-	sr r13, [_ARC_V2_AGU_AP0]
-	ld r13, [sp, ___callee_saved_stack_t_agu_ap1_OFFSET]
-	sr r13, [_ARC_V2_AGU_AP1]
-	ld r13, [sp, ___callee_saved_stack_t_agu_ap2_OFFSET]
-	sr r13, [_ARC_V2_AGU_AP2]
-	ld r13, [sp, ___callee_saved_stack_t_agu_ap3_OFFSET]
-	sr r13, [_ARC_V2_AGU_AP3]
-	ld r13, [sp, ___callee_saved_stack_t_agu_os0_OFFSET]
-	sr r13, [_ARC_V2_AGU_OS0]
-	ld r13, [sp, ___callee_saved_stack_t_agu_os1_OFFSET]
-	sr r13, [_ARC_V2_AGU_OS1]
-	ld r13, [sp, ___callee_saved_stack_t_agu_mod0_OFFSET]
-	sr r13, [_ARC_V2_AGU_MOD0]
-	ld r13, [sp, ___callee_saved_stack_t_agu_mod1_OFFSET]
-	sr r13, [_ARC_V2_AGU_MOD1]
-	ld r13, [sp, ___callee_saved_stack_t_agu_mod2_OFFSET]
-	sr r13, [_ARC_V2_AGU_MOD2]
-	ld r13, [sp, ___callee_saved_stack_t_agu_mod3_OFFSET]
-	sr r13, [_ARC_V2_AGU_MOD3]
-#ifdef CONFIG_ARC_AGU_MEDIUM
-	ld r13, [sp, ___callee_saved_stack_t_agu_ap4_OFFSET]
-	sr r13, [_ARC_V2_AGU_AP4]
-	ld r13, [sp, ___callee_saved_stack_t_agu_ap5_OFFSET]
-	sr r13, [_ARC_V2_AGU_AP5]
-	ld r13, [sp, ___callee_saved_stack_t_agu_ap6_OFFSET]
-	sr r13, [_ARC_V2_AGU_AP6]
-	ld r13, [sp, ___callee_saved_stack_t_agu_ap7_OFFSET]
-	sr r13, [_ARC_V2_AGU_AP7]
-	ld r13, [sp, ___callee_saved_stack_t_agu_os2_OFFSET]
-	sr r13, [_ARC_V2_AGU_OS2]
-	ld r13, [sp, ___callee_saved_stack_t_agu_os3_OFFSET]
-	sr r13, [_ARC_V2_AGU_OS3]
-	ld r13, [sp, ___callee_saved_stack_t_agu_mod4_OFFSET]
-	sr r13, [_ARC_V2_AGU_MOD4]
-	ld r13, [sp, ___callee_saved_stack_t_agu_mod5_OFFSET]
-	sr r13, [_ARC_V2_AGU_MOD5]
-	ld r13, [sp, ___callee_saved_stack_t_agu_mod6_OFFSET]
-	sr r13, [_ARC_V2_AGU_MOD6]
-	ld r13, [sp, ___callee_saved_stack_t_agu_mod7_OFFSET]
-	sr r13, [_ARC_V2_AGU_MOD7]
-	ld r13, [sp, ___callee_saved_stack_t_agu_mod8_OFFSET]
-	sr r13, [_ARC_V2_AGU_MOD8]
-	ld r13, [sp, ___callee_saved_stack_t_agu_mod9_OFFSET]
-	sr r13, [_ARC_V2_AGU_MOD9]
-	ld r13, [sp, ___callee_saved_stack_t_agu_mod10_OFFSET]
-	sr r13, [_ARC_V2_AGU_MOD10]
-	ld r13, [sp, ___callee_saved_stack_t_agu_mod11_OFFSET]
-	sr r13, [_ARC_V2_AGU_MOD11]
-#endif
-#ifdef CONFIG_ARC_AGU_LARGE
-	ld r13, [sp, ___callee_saved_stack_t_agu_ap8_OFFSET]
-	sr r13, [_ARC_V2_AGU_AP8]
-	ld r13, [sp, ___callee_saved_stack_t_agu_ap9_OFFSET]
-	sr r13, [_ARC_V2_AGU_AP9]
-	ld r13, [sp, ___callee_saved_stack_t_agu_ap10_OFFSET]
-	sr r13, [_ARC_V2_AGU_AP10]
-	ld r13, [sp, ___callee_saved_stack_t_agu_ap11_OFFSET]
-	sr r13, [_ARC_V2_AGU_AP11]
-	ld r13, [sp, ___callee_saved_stack_t_agu_os4_OFFSET]
-	sr r13, [_ARC_V2_AGU_OS4]
-	ld r13, [sp, ___callee_saved_stack_t_agu_os5_OFFSET]
-	sr r13, [_ARC_V2_AGU_OS5]
-	ld r13, [sp, ___callee_saved_stack_t_agu_os6_OFFSET]
-	sr r13, [_ARC_V2_AGU_OS6]
-	ld r13, [sp, ___callee_saved_stack_t_agu_os7_OFFSET]
-	sr r13, [_ARC_V2_AGU_OS7]
-	ld r13, [sp, ___callee_saved_stack_t_agu_mod12_OFFSET]
-	sr r13, [_ARC_V2_AGU_MOD12]
-	ld r13, [sp, ___callee_saved_stack_t_agu_mod13_OFFSET]
-	sr r13, [_ARC_V2_AGU_MOD13]
-	ld r13, [sp, ___callee_saved_stack_t_agu_mod14_OFFSET]
-	sr r13, [_ARC_V2_AGU_MOD14]
-	ld r13, [sp, ___callee_saved_stack_t_agu_mod15_OFFSET]
-	sr r13, [_ARC_V2_AGU_MOD15]
-	ld r13, [sp, ___callee_saved_stack_t_agu_mod16_OFFSET]
-	sr r13, [_ARC_V2_AGU_MOD16]
-	ld r13, [sp, ___callee_saved_stack_t_agu_mod17_OFFSET]
-	sr r13, [_ARC_V2_AGU_MOD17]
-	ld r13, [sp, ___callee_saved_stack_t_agu_mod18_OFFSET]
-	sr r13, [_ARC_V2_AGU_MOD18]
-	ld r13, [sp, ___callee_saved_stack_t_agu_mod19_OFFSET]
-	sr r13, [_ARC_V2_AGU_MOD19]
-	ld r13, [sp, ___callee_saved_stack_t_agu_mod20_OFFSET]
-	sr r13, [_ARC_V2_AGU_MOD20]
-	ld r13, [sp, ___callee_saved_stack_t_agu_mod21_OFFSET]
-	sr r13, [_ARC_V2_AGU_MOD21]
-	ld r13, [sp, ___callee_saved_stack_t_agu_mod22_OFFSET]
-	sr r13, [_ARC_V2_AGU_MOD22]
-	ld r13, [sp, ___callee_saved_stack_t_agu_mod23_OFFSET]
-	sr r13, [_ARC_V2_AGU_MOD23]
-#endif
-#endif
-agu_skip_load :
-.endm
-
-.macro _dsp_extension_probe
-#ifdef CONFIG_ARC_DSP_TURNED_OFF
-	mov	 r0, 0 /* DSP_CTRL_DISABLED_ALL */
-	sr	 r0, [_ARC_V2_DSP_CTRL]
-#endif
-.endm

arch/arc/core/fast_irq.S

@@ -13,17 +13,24 @@
  * See isr_wrapper.S for details.
  */
 
-#include <zephyr/kernel_structs.h>
+#include <kernel_structs.h>
 #include <offsets_short.h>
-#include <zephyr/toolchain.h>
-#include <zephyr/linker/sections.h>
-#include <zephyr/arch/cpu.h>
+#include <toolchain.h>
+#include <arch/cpu.h>
 #include <swap_macros.h>
 
 GTEXT(_firq_enter)
 GTEXT(_firq_exit)
 
+GDATA(exc_nest_count)
+#if CONFIG_RGF_NUM_BANKS == 1
+GDATA(saved_r0)
+#else
+GDATA(saved_sp)
+#endif
+
 /**
+ *
  * @brief Work to be done before handing control to a FIRQ ISR
  *
  * The processor switches to a second register bank so registers from the
@@ -40,6 +47,8 @@ GTEXT(_firq_exit)
  * interrupt. An exception, however, can be taken.
  *
  * Assumption by _isr_demux: r3 is untouched by _firq_enter.
+ *
+ * @return N/A
  */
 
 SECTION_FUNC(TEXT, _firq_enter)
@@ -51,19 +60,14 @@ SECTION_FUNC(TEXT, _firq_enter)
  * This has already been done by _isr_wrapper.
  */
 #ifdef CONFIG_ARC_STACK_CHECKING
-#ifdef CONFIG_ARC_SECURE_FIRMWARE
-	lr r2, [_ARC_V2_SEC_STAT]
-	bclr r2, r2, _ARC_V2_SEC_STAT_SSC_BIT
-	sflag r2
-#else
 	/* disable stack checking */
 	lr r2, [_ARC_V2_STATUS32]
 	bclr r2, r2, _ARC_V2_STATUS32_SC_BIT
 	kflag r2
 #endif
-#endif
 
 #if CONFIG_RGF_NUM_BANKS != 1
+#ifndef CONFIG_FIRQ_NO_LPCC
 	/*
 	 * Save LP_START/LP_COUNT/LP_END because called handler might use.
 	 * Save these in callee saved registers to avoid using memory.
@@ -72,152 +76,148 @@ SECTION_FUNC(TEXT, _firq_enter)
 	mov r23,lp_count
 	lr r24, [_ARC_V2_LP_START]
 	lr r25, [_ARC_V2_LP_END]
+#endif
 #endif
 
-	/* check whether irq stack is used */
-	_check_and_inc_int_nest_counter r0, r1
+	ld r1, [exc_nest_count]
+	add r0, r1, 1
+	st r0, [exc_nest_count]
+	cmp r1, 0
 
-	bne.d firq_nest
-	mov_s r0, sp
+	bgt.d  firq_nest
+	mov r0, sp
 
-	_get_curr_cpu_irq_stack sp
+	mov r1, _kernel
+	ld sp, [r1, _kernel_offset_to_irq_stack]
 #if CONFIG_RGF_NUM_BANKS != 1
 	b firq_nest_1
 firq_nest:
-	/*
-	 * because firq and rirq share the same interrupt stack,
-	 * switch back to original register bank to get correct sp.
-	 * to get better firq latency, an approach is to prepare
-	 * separate interrupt stack for firq and do not do thread
-	 * switch in firq.
-	 */
-	lr r1, [_ARC_V2_STATUS32]
-	and r1, r1, ~_ARC_V2_STATUS32_RB(7)
-	kflag r1
+	mov r1, ilink
+	lr r0, [_ARC_V2_STATUS32]
+	and r0, r0, ~_ARC_V2_STATUS32_RB(7)
+	kflag r0
 
-	/* here use _ARC_V2_USER_SP and ilink to exchange sp
-	 * save original value of _ARC_V2_USER_SP and ilink into
-	 * the stack of interrupted context first, then restore them later
-	 */
-	push ilink
-	PUSHAX ilink, _ARC_V2_USER_SP
+	st sp, [saved_sp]
 
-	/* sp here is the sp of interrupted context */
-	sr sp, [_ARC_V2_USER_SP]
-	/* here, bank 0 sp must go back to the value before push and
-	 * PUSHAX as we will switch to bank1, the pop and POPAX later will
-	 * change bank1's sp, not bank0's sp
-	 */
-	add sp, sp, 8
-
-	/* switch back to banked reg, only ilink can be used */
 	lr ilink, [_ARC_V2_STATUS32]
 	or ilink, ilink, _ARC_V2_STATUS32_RB(1)
 	kflag ilink
-	lr sp, [_ARC_V2_USER_SP]
-
-	POPAX ilink, _ARC_V2_USER_SP
-	pop ilink
+	mov r0, sp
+	ld sp, [saved_sp]
+	mov ilink, r1
 firq_nest_1:
 #else
 firq_nest:
 #endif
 	push_s r0
-	j _isr_demux
+	j @_isr_demux
 
 
 
 /**
+ *
  * @brief Work to be done exiting a FIRQ
+ *
+ * @return N/A
  */
 
 SECTION_FUNC(TEXT, _firq_exit)
 
 #if CONFIG_RGF_NUM_BANKS != 1
+#ifndef CONFIG_FIRQ_NO_LPCC
 	/* restore lp_count, lp_start, lp_end from r23-r25 */
 	mov lp_count,r23
 	sr r24, [_ARC_V2_LP_START]
 	sr r25, [_ARC_V2_LP_END]
 #endif
-	_dec_int_nest_counter r0, r1
+#endif
+	/* check if we're a nested interrupt: if so, let the interrupted
+	 * interrupt handle the reschedule */
+	mov	r1, exc_nest_count
+	ld	r0, [r1]
+	sub	r0, r0, 1
+	cmp	r0, 0
+	bne.d	_firq_no_reschedule
+	st	r0, [r1]
 
-	_check_nest_int_by_irq_act r0, r1
+#ifdef CONFIG_STACK_SENTINEL
+	bl _check_stack_sentinel
+#endif
 
-	jne _firq_no_switch
+#ifdef CONFIG_PREEMPT_ENABLED
 
-	/* sp is struct k_thread **old of z_arc_switch_in_isr which is a wrapper of
-	 * z_get_next_switch_handle. r0 contains the 1st thread in ready queue. If it isn't NULL,
-	 * then do switch to this thread.
-	 */
-	_get_next_switch_handle
+	mov_s r1, _kernel
+	ld_s r2, [r1, _kernel_offset_to_current]
 
-	CMPR r0, 0
-	bne _firq_switch
+	/* Check if the current thread (in r2) is the cached thread */
+	ld_s r0, [r1, _kernel_offset_to_ready_q_cache]
+	brne r0, r2, _firq_reschedule
 
-	/* fall to no switch */
+	/* fall to no rescheduling */
 
-.align 4
-_firq_no_switch:
-	/* restore interrupted context' sp */
+#endif /* CONFIG_PREEMPT_ENABLED */
+
+.balign 4
+_firq_no_reschedule:
 	pop sp
+
 	/*
 	 * Keeping this code block close to those that use it allows using brxx
 	 * instruction instead of a pair of cmp and bxx
 	 */
 #if CONFIG_RGF_NUM_BANKS == 1
-	_pop_irq_stack_frame
+	add sp,sp,4 /* don't need r0 from stack */
+	pop_s r1
+	pop_s r2
+	pop_s r3
+	pop r4
+	pop r5
+	pop r6
+	pop r7
+	pop r8
+	pop r9
+	pop r10
+	pop r11
+	pop_s r12
+	pop_s r13
+	pop_s blink
+	pop_s r0
+	sr r0, [_ARC_V2_LP_END]
+	pop_s r0
+	sr r0, [_ARC_V2_LP_START]
+	pop_s r0
+	mov lp_count,r0
+#ifdef CONFIG_CODE_DENSITY
+	pop_s r0
+	sr r0, [_ARC_V2_EI_BASE]
+	pop_s r0
+	sr r0, [_ARC_V2_LDI_BASE]
+	pop_s r0
+	sr r0, [_ARC_V2_JLI_BASE]
+#endif
+	ld r0,[saved_r0]
+	add sp,sp,8 /* don't need ilink & status32_po from stack */
 #endif
 	rtie
 
-.align 4
-_firq_switch:
-	/* restore interrupted context' sp */
+#ifdef CONFIG_PREEMPT_ENABLED
+
+.balign 4
+_firq_reschedule:
 	pop sp
 
 #if CONFIG_RGF_NUM_BANKS != 1
-/*
- * save r0, r2 in irq stack for a while, as they will be changed by register
- * bank switch
- */
-	_get_curr_cpu_irq_stack r1
-	st r0, [r1, -4]
-	st r2, [r1, -8]
-
 	/*
 	 * We know there is no interrupted interrupt of lower priority at this
 	 * point, so when switching back to register bank 0, it will contain the
 	 * registers from the interrupted thread.
 	 */
-#if defined(CONFIG_USERSPACE)
-/* when USERSPACE is configured, here need to consider the case where firq comes
- * out in user mode, according to ARCv2 ISA and nsim, the following micro ops
- * will be executed:
- *	sp<-reg bank1'sp
- *      switch between sp and _ARC_V2_USER_SP
- * then:
- *      sp is the sp of kernel stack of interrupted thread
- *      _ARC_V2_USER_SP is reg bank1'sp
- *      the sp of user stack of interrupted thread is reg bank0'sp
- * if firq comes out in kernel mode, the following micro ops will be executed:
- *      sp<-reg bank'sp
- * so, sw needs to do necessary handling to set up the correct sp
- */
-	lr r0, [_ARC_V2_AUX_IRQ_ACT]
-	bbit0 r0, 31, _firq_from_kernel
-	aex sp, [_ARC_V2_USER_SP]
-	lr r0, [_ARC_V2_STATUS32]
-	and r0, r0, ~_ARC_V2_STATUS32_RB(7)
-	kflag r0
-	aex sp, [_ARC_V2_USER_SP]
-	b _firq_create_irq_stack_frame
-_firq_from_kernel:
-#endif
+
 	/* chose register bank #0 */
 	lr r0, [_ARC_V2_STATUS32]
 	and r0, r0, ~_ARC_V2_STATUS32_RB(7)
 	kflag r0
 
-_firq_create_irq_stack_frame:
 	/* we're back on the outgoing thread's stack */
 	_create_irq_stack_frame
 
@@ -230,56 +230,71 @@ _firq_create_irq_stack_frame:
 	st_s r0, [sp, ___isf_t_status32_OFFSET]
 
 	st ilink, [sp, ___isf_t_pc_OFFSET] /* ilink into pc */
-/*
- * load r0, r2 from irq stack
- */
-	_get_curr_cpu_irq_stack r1
-	ld r0, [r1, -4]
-	ld r2, [r1, -8]
 #endif
-	/* r2 is old thread */
+
+	mov_s r1, _kernel
+	ld_s r2, [r1, _kernel_offset_to_current]
+
+	_save_callee_saved_regs
+
 	st _CAUSE_FIRQ, [r2, _thread_offset_to_relinquish_cause]
 
-	_irq_store_old_thread_callee_regs
+	ld_s r2, [r1, _kernel_offset_to_ready_q_cache]
+	st_s r2, [r1, _kernel_offset_to_current]
 
-	/* mov new thread (r0) to r2 */
+#ifdef CONFIG_ARC_STACK_CHECKING
+	_load_stack_check_regs
+#endif
+	/*
+	 * _load_callee_saved_regs expects incoming thread in r2.
+	 * _load_callee_saved_regs restores the stack pointer.
+	 */
+	_load_callee_saved_regs
 
-	mov r2, r0
-	_load_new_thread_callee_regs
+#if defined(CONFIG_MPU_STACK_GUARD) || defined(CONFIG_USERSPACE)
+	push_s r2
+	mov r0, r2
+	bl configure_mpu_thread
+	pop_s r2
+#endif
 
-	breq r3, _CAUSE_RIRQ, _firq_switch_from_rirq
-	nop_s
-	breq r3, _CAUSE_FIRQ, _firq_switch_from_firq
-	nop_s
+	ld_s r3, [r2, _thread_offset_to_relinquish_cause]
+
+	breq r3, _CAUSE_RIRQ, _firq_return_from_rirq
+	nop
+	breq r3, _CAUSE_FIRQ, _firq_return_from_firq
+	nop
 
 	/* fall through */
 
-.align 4
-_firq_switch_from_coop:
+.balign 4
+_firq_return_from_coop:
 
-	_set_misc_regs_irq_switch_from_coop
+	ld_s r3, [r2, _thread_offset_to_intlock_key]
+	st  0, [r2, _thread_offset_to_intlock_key]
 
 	/* pc into ilink */
 	pop_s r0
 	mov ilink, r0
 
 	pop_s r0 /* status32 into r0 */
+	/*
+	 * There are only two interrupt lock states: locked and unlocked. When
+	 * entering _Swap(), they are always locked, so the IE bit is unset in
+	 * status32. If the incoming thread had them locked recursively, it
+	 * means that the IE bit should stay unset. The only time the bit
+	 * has to change is if they were not locked recursively.
+	 */
+	and.f r3, r3, (1 << 4)
+	or.nz r0, r0, _ARC_V2_STATUS32_IE
 	sr r0, [_ARC_V2_STATUS32_P0]
 
-#ifdef CONFIG_INSTRUMENT_THREAD_SWITCHING
-	push_s blink
-
-	bl z_thread_mark_switched_in
-
-	pop_s blink
-#endif
+	ld_s r0, [r2, _thread_offset_to_return_value]
 	rtie
 
-.align 4
-_firq_switch_from_rirq:
-_firq_switch_from_firq:
-
-	_set_misc_regs_irq_switch_from_irq
+.balign 4
+_firq_return_from_rirq:
+_firq_return_from_firq:
 
 	_pop_irq_stack_frame
 
@@ -287,12 +302,7 @@ _firq_switch_from_firq:
 	sr ilink, [_ARC_V2_STATUS32_P0]
 	ld ilink, [sp, -8] /* pc into ilink */
 
-#ifdef CONFIG_INSTRUMENT_THREAD_SWITCHING
-	push_s blink
-
-	bl z_thread_mark_switched_in
-
-	pop_s blink
-#endif
 	/* LP registers are already restored, just switch back to bank 0 */
 	rtie
+
+#endif /* CONFIG_PREEMPT_ENABLED */

arch/arc/core/fatal.c

@@ -12,59 +12,77 @@
  * ARCv2 CPUs.
  */
 
-#include <zephyr/kernel.h>
+#include <kernel_structs.h>
 #include <offsets_short.h>
-#include <zephyr/arch/cpu.h>
-#include <zephyr/logging/log.h>
-#include <kernel_arch_data.h>
-#include <zephyr/arch/arc/v2/exc.h>
+#include <toolchain.h>
+#include <arch/cpu.h>
+#include <misc/printk.h>
 
-LOG_MODULE_DECLARE(os, CONFIG_KERNEL_LOG_LEVEL);
-
-#ifdef CONFIG_ARC_EXCEPTION_DEBUG
-static void dump_arc_esf(const z_arch_esf_t *esf)
+/**
+ *
+ * @brief Kernel fatal error handler
+ *
+ * This routine is called when fatal error conditions are detected by software
+ * and is responsible only for reporting the error. Once reported, it then
+ * invokes the user provided routine _SysFatalErrorHandler() which is
+ * responsible for implementing the error handling policy.
+ *
+ * The caller is expected to always provide a usable ESF. In the event that the
+ * fatal error does not have a hardware generated ESF, the caller should either
+ * create its own or use a pointer to the global default ESF <_default_esf>.
+ *
+ * @return This function does not return.
+ */
+void _NanoFatalErrorHandler(unsigned int reason, const NANO_ESF *pEsf)
 {
-	LOG_ERR(" r0: 0x%" PRIxPTR "  r1: 0x%" PRIxPTR "  r2: 0x%" PRIxPTR "  r3: 0x%" PRIxPTR "",
-		esf->r0, esf->r1, esf->r2, esf->r3);
-	LOG_ERR(" r4: 0x%" PRIxPTR "  r5: 0x%" PRIxPTR "  r6: 0x%" PRIxPTR "  r7: 0x%" PRIxPTR "",
-		esf->r4, esf->r5, esf->r6, esf->r7);
-	LOG_ERR(" r8: 0x%" PRIxPTR "  r9: 0x%" PRIxPTR " r10: 0x%" PRIxPTR " r11: 0x%" PRIxPTR "",
-		esf->r8, esf->r9, esf->r10, esf->r11);
-	LOG_ERR("r12: 0x%" PRIxPTR " r13: 0x%" PRIxPTR "  pc: 0x%" PRIxPTR "",
-		esf->r12, esf->r13, esf->pc);
-	LOG_ERR(" blink: 0x%" PRIxPTR " status32: 0x%" PRIxPTR "", esf->blink, esf->status32);
-#ifdef CONFIG_ARC_HAS_ZOL
-	LOG_ERR("lp_end: 0x%" PRIxPTR " lp_start: 0x%" PRIxPTR " lp_count: 0x%" PRIxPTR "",
-		esf->lp_end, esf->lp_start, esf->lp_count);
-#endif /* CONFIG_ARC_HAS_ZOL */
-}
+	switch (reason) {
+	case _NANO_ERR_HW_EXCEPTION:
+		break;
+
+#if defined(CONFIG_STACK_CANARIES) || defined(CONFIG_ARC_STACK_CHECKING) \
+	|| defined(CONFIG_STACK_SENTINEL)
+	case _NANO_ERR_STACK_CHK_FAIL:
+		printk("***** Stack Check Fail! *****\n");
+		break;
 #endif
 
-void z_arc_fatal_error(unsigned int reason, const z_arch_esf_t *esf)
-{
-#ifdef CONFIG_ARC_EXCEPTION_DEBUG
-	if (esf != NULL) {
-		dump_arc_esf(esf);
+	case _NANO_ERR_ALLOCATION_FAIL:
+		printk("**** Kernel Allocation Failure! ****\n");
+		break;
+
+	case _NANO_ERR_KERNEL_OOPS:
+		printk("***** Kernel OOPS! *****\n");
+		break;
+
+	case _NANO_ERR_KERNEL_PANIC:
+		printk("***** Kernel Panic! *****\n");
+		break;
+
+	default:
+		printk("**** Unknown Fatal Error %d! ****\n", reason);
+		break;
 	}
-#endif /* CONFIG_ARC_EXCEPTION_DEBUG */
 
-	z_fatal_error(reason, esf);
+	printk("Current thread ID = %p\n",  k_current_get());
+
+	if (reason == _NANO_ERR_HW_EXCEPTION) {
+		printk("Faulting instruction address = 0x%lx\n",
+		_arc_v2_aux_reg_read(_ARC_V2_ERET));
+	}
+
+	/*
+	 * Now that the error has been reported, call the user implemented
+	 * policy
+	 * to respond to the error.  The decisions as to what responses are
+	 * appropriate to the various errors are something the customer must
+	 * decide.
+	 */
+
+	_SysFatalErrorHandler(reason, pEsf);
 }
 
-FUNC_NORETURN void arch_syscall_oops(void *ssf_ptr)
+FUNC_NORETURN void _arch_syscall_oops(void *ssf_ptr)
 {
-	/* TODO: convert ssf_ptr contents into an esf, they are not the same */
-	ARG_UNUSED(ssf_ptr);
-
-	z_arc_fatal_error(K_ERR_KERNEL_OOPS, NULL);
-	CODE_UNREACHABLE;
-}
-
-FUNC_NORETURN void arch_system_halt(unsigned int reason)
-{
-	ARG_UNUSED(reason);
-
-	__asm__("brk");
-
+	_SysFatalErrorHandler(_NANO_ERR_KERNEL_OOPS, ssf_ptr);
 	CODE_UNREACHABLE;
 }

arch/arc/core/fault.c

@@ -11,406 +11,52 @@
  * Common fault handler for ARCv2 processors.
  */
 
-#include <zephyr/toolchain.h>
-#include <zephyr/linker/sections.h>
+#include <toolchain.h>
+#include <linker/sections.h>
 #include <inttypes.h>
 
-#include <zephyr/kernel.h>
-#include <kernel_internal.h>
-#include <zephyr/kernel_structs.h>
-#include <zephyr/arch/common/exc_handle.h>
-#include <zephyr/logging/log.h>
-LOG_MODULE_DECLARE(os, CONFIG_KERNEL_LOG_LEVEL);
-
-#ifdef CONFIG_USERSPACE
-Z_EXC_DECLARE(z_arc_user_string_nlen);
-
-static const struct z_exc_handle exceptions[] = {
-	Z_EXC_HANDLE(z_arc_user_string_nlen)
-};
-#endif
-
-#if defined(CONFIG_MPU_STACK_GUARD)
-/**
- * @brief Assess occurrence of current thread's stack corruption
- *
- * This function performs an assessment whether a memory fault (on a given
- * memory address) is the result of a stack overflow of the current thread.
- *
- * When called, we know at this point that we received an ARC
- * protection violation, with any cause code, with the protection access
- * error either "MPU" or "Secure MPU". In other words, an MPU fault of
- * some kind. Need to determine whether this is a general MPU access
- * exception or the specific case of a stack overflow.
- *
- * @param fault_addr memory address on which memory access violation
- *                   has been reported.
- * @param sp stack pointer when exception comes out
- * @retval True if this appears to be a stack overflow
- * @retval False if this does not appear to be a stack overflow
- */
-static bool z_check_thread_stack_fail(const uint32_t fault_addr, uint32_t sp)
-{
-	uint32_t guard_end, guard_start;
-
-#if defined(CONFIG_MULTITHREADING)
-	const struct k_thread *thread = _current;
-
-	if (!thread) {
-		/* TODO: Under what circumstances could we get here ? */
-		return false;
-	}
-
-#ifdef CONFIG_USERSPACE
-	if ((thread->base.user_options & K_USER) != 0) {
-		if ((z_arc_v2_aux_reg_read(_ARC_V2_ERSTATUS) &
-		     _ARC_V2_STATUS32_U) != 0) {
-			/* Normal user mode context. There is no specific
-			 * "guard" installed in this case, instead what's
-			 * happening is that the stack pointer is crashing
-			 * into the privilege mode stack buffer which
-			 * immediately precededs it.
-			 */
-			guard_end = thread->stack_info.start;
-			guard_start = (uint32_t)thread->stack_obj;
-		} else {
-			/* Special case: handling a syscall on privilege stack.
-			 * There is guard memory reserved immediately before
-			 * it.
-			 */
-			guard_end = thread->arch.priv_stack_start;
-			guard_start = guard_end - Z_ARC_STACK_GUARD_SIZE;
-		}
-	} else
-#endif /* CONFIG_USERSPACE */
-	{
-		/* Supervisor thread */
-		guard_end = thread->stack_info.start;
-		guard_start = guard_end - Z_ARC_STACK_GUARD_SIZE;
-	}
-#endif /* CONFIG_MULTITHREADING */
-
-	 /* treat any MPU exceptions within the guard region as a stack
-	  * overflow.As some instrustions
-	  * (like enter_s {r13-r26, fp, blink}) push a collection of
-	  * registers on to the stack. In this situation, the fault_addr
-	  * will less than guard_end, but sp will greater than guard_end.
-	  */
-	if (fault_addr < guard_end && fault_addr >= guard_start) {
-		return true;
-	}
-
-	return false;
-}
-#endif
-
-#ifdef CONFIG_ARC_EXCEPTION_DEBUG
-/* For EV_ProtV, the numbering/semantics of the parameter are consistent across
- * several codes, although not all combination will be reported.
- *
- * These codes and parameters do not have associated* names in
- * the technical manual, just switch on the values in Table 6-5
- */
-static const char *get_protv_access_err(uint32_t parameter)
-{
-	switch (parameter) {
-	case 0x1:
-		return "code protection scheme";
-	case 0x2:
-		return "stack checking scheme";
-	case 0x4:
-		return "MPU";
-	case 0x8:
-		return "MMU";
-	case 0x10:
-		return "NVM";
-	case 0x24:
-		return "Secure MPU";
-	case 0x44:
-		return "Secure MPU with SID mismatch";
-	default:
-		return "unknown";
-	}
-}
-
-static void dump_protv_exception(uint32_t cause, uint32_t parameter)
-{
-	switch (cause) {
-	case 0x0:
-		LOG_ERR("Instruction fetch violation (%s)",
-			get_protv_access_err(parameter));
-		break;
-	case 0x1:
-		LOG_ERR("Memory read protection violation (%s)",
-			get_protv_access_err(parameter));
-		break;
-	case 0x2:
-		LOG_ERR("Memory write protection violation (%s)",
-			get_protv_access_err(parameter));
-		break;
-	case 0x3:
-		LOG_ERR("Memory read-modify-write violation (%s)",
-			get_protv_access_err(parameter));
-		break;
-	case 0x10:
-		LOG_ERR("Normal vector table in secure memory");
-		break;
-	case 0x11:
-		LOG_ERR("NS handler code located in S memory");
-		break;
-	case 0x12:
-		LOG_ERR("NSC Table Range Violation");
-		break;
-	default:
-		LOG_ERR("unknown");
-		break;
-	}
-}
-
-static void dump_machine_check_exception(uint32_t cause, uint32_t parameter)
-{
-	switch (cause) {
-	case 0x0:
-		LOG_ERR("double fault");
-		break;
-	case 0x1:
-		LOG_ERR("overlapping TLB entries");
-		break;
-	case 0x2:
-		LOG_ERR("fatal TLB error");
-		break;
-	case 0x3:
-		LOG_ERR("fatal cache error");
-		break;
-	case 0x4:
-		LOG_ERR("internal memory error on instruction fetch");
-		break;
-	case 0x5:
-		LOG_ERR("internal memory error on data fetch");
-		break;
-	case 0x6:
-		LOG_ERR("illegal overlapping MPU entries");
-		if (parameter == 0x1) {
-			LOG_ERR(" - jump and branch target");
-		}
-		break;
-	case 0x10:
-		LOG_ERR("secure vector table not located in secure memory");
-		break;
-	case 0x11:
-		LOG_ERR("NSC jump table not located in secure memory");
-		break;
-	case 0x12:
-		LOG_ERR("secure handler code not located in secure memory");
-		break;
-	case 0x13:
-		LOG_ERR("NSC target address not located in secure memory");
-		break;
-	case 0x80:
-		LOG_ERR("uncorrectable ECC or parity error in vector memory");
-		break;
-	default:
-		LOG_ERR("unknown");
-		break;
-	}
-}
-
-static void dump_privilege_exception(uint32_t cause, uint32_t parameter)
-{
-	switch (cause) {
-	case 0x0:
-		LOG_ERR("Privilege violation");
-		break;
-	case 0x1:
-		LOG_ERR("disabled extension");
-		break;
-	case 0x2:
-		LOG_ERR("action point hit");
-		break;
-	case 0x10:
-		switch (parameter) {
-		case 0x1:
-			LOG_ERR("N to S return using incorrect return mechanism");
-			break;
-		case 0x2:
-			LOG_ERR("N to S return with incorrect operating mode");
-			break;
-		case 0x3:
-			LOG_ERR("IRQ/exception return fetch from wrong mode");
-			break;
-		case 0x4:
-			LOG_ERR("attempt to halt secure processor in NS mode");
-			break;
-		case 0x20:
-			LOG_ERR("attempt to access secure resource from normal mode");
-			break;
-		case 0x40:
-			LOG_ERR("SID violation on resource access (APEX/UAUX/key NVM)");
-			break;
-		default:
-			LOG_ERR("unknown");
-			break;
-		}
-		break;
-	case 0x13:
-		switch (parameter) {
-		case 0x20:
-			LOG_ERR("attempt to access secure APEX feature from NS mode");
-			break;
-		case 0x40:
-			LOG_ERR("SID violation on access to APEX feature");
-			break;
-		default:
-			LOG_ERR("unknown");
-			break;
-		}
-		break;
-	default:
-		LOG_ERR("unknown");
-		break;
-	}
-}
-
-static void dump_exception_info(uint32_t vector, uint32_t cause, uint32_t parameter)
-{
-	if (vector >= 0x10 && vector <= 0xFF) {
-		LOG_ERR("interrupt %u", vector);
-		return;
-	}
-
-	/* Names are exactly as they appear in Designware ARCv2 ISA
-	 * Programmer's reference manual for easy searching
-	 */
-	switch (vector) {
-	case ARC_EV_RESET:
-		LOG_ERR("Reset");
-		break;
-	case ARC_EV_MEM_ERROR:
-		LOG_ERR("Memory Error");
-		break;
-	case ARC_EV_INS_ERROR:
-		LOG_ERR("Instruction Error");
-		break;
-	case ARC_EV_MACHINE_CHECK:
-		LOG_ERR("EV_MachineCheck");
-		dump_machine_check_exception(cause, parameter);
-		break;
-	case ARC_EV_TLB_MISS_I:
-		LOG_ERR("EV_TLBMissI");
-		break;
-	case ARC_EV_TLB_MISS_D:
-		LOG_ERR("EV_TLBMissD");
-		break;
-	case ARC_EV_PROT_V:
-		LOG_ERR("EV_ProtV");
-		dump_protv_exception(cause, parameter);
-		break;
-	case ARC_EV_PRIVILEGE_V:
-		LOG_ERR("EV_PrivilegeV");
-		dump_privilege_exception(cause, parameter);
-		break;
-	case ARC_EV_SWI:
-		LOG_ERR("EV_SWI");
-		break;
-	case ARC_EV_TRAP:
-		LOG_ERR("EV_Trap");
-		break;
-	case ARC_EV_EXTENSION:
-		LOG_ERR("EV_Extension");
-		break;
-	case ARC_EV_DIV_ZERO:
-		LOG_ERR("EV_DivZero");
-		break;
-	case ARC_EV_DC_ERROR:
-		LOG_ERR("EV_DCError");
-		break;
-	case ARC_EV_MISALIGNED:
-		LOG_ERR("EV_Misaligned");
-		break;
-	case ARC_EV_VEC_UNIT:
-		LOG_ERR("EV_VecUnit");
-		break;
-	default:
-		LOG_ERR("unknown");
-		break;
-	}
-}
-#endif /* CONFIG_ARC_EXCEPTION_DEBUG */
+#include <kernel.h>
+#include <kernel_structs.h>
+#include <misc/printk.h>
 
 /*
  * @brief Fault handler
  *
  * This routine is called when fatal error conditions are detected by hardware
  * and is responsible only for reporting the error. Once reported, it then
- * invokes the user provided routine k_sys_fatal_error_handler() which is
+ * invokes the user provided routine _SysFatalErrorHandler() which is
  * responsible for implementing the error handling policy.
+ *
+ * @return This function does not return.
  */
-void _Fault(z_arch_esf_t *esf, uint32_t old_sp)
+void _Fault(const NANO_ESF *esf)
 {
-	uint32_t vector, cause, parameter;
-	uint32_t exc_addr = z_arc_v2_aux_reg_read(_ARC_V2_EFA);
-	uint32_t ecr = z_arc_v2_aux_reg_read(_ARC_V2_ECR);
+	u32_t vector, code, parameter;
+	u32_t exc_addr = _arc_v2_aux_reg_read(_ARC_V2_EFA);
+	u32_t ecr = _arc_v2_aux_reg_read(_ARC_V2_ECR);
 
-#ifdef CONFIG_USERSPACE
-	for (int i = 0; i < ARRAY_SIZE(exceptions); i++) {
-		uint32_t start = (uint32_t)exceptions[i].start;
-		uint32_t end = (uint32_t)exceptions[i].end;
+	vector = _ARC_V2_ECR_VECTOR(ecr);
+	code =  _ARC_V2_ECR_CODE(ecr);
+	parameter = _ARC_V2_ECR_PARAMETER(ecr);
 
-		if (esf->pc >= start && esf->pc < end) {
-			esf->pc = (uint32_t)(exceptions[i].fixup);
-			return;
-		}
-	}
-#endif
-
-	vector = Z_ARC_V2_ECR_VECTOR(ecr);
-	cause =  Z_ARC_V2_ECR_CODE(ecr);
-	parameter = Z_ARC_V2_ECR_PARAMETER(ecr);
 
 	/* exception raised by kernel */
-	if (vector == ARC_EV_TRAP && parameter == _TRAP_S_CALL_RUNTIME_EXCEPT) {
-		/*
-		 * in user mode software-triggered system fatal exceptions only allow
-		 * K_ERR_KERNEL_OOPS and K_ERR_STACK_CHK_FAIL
-		 */
-#ifdef CONFIG_USERSPACE
-		if ((esf->status32 & _ARC_V2_STATUS32_U) &&
-			esf->r0 != K_ERR_STACK_CHK_FAIL) {
-			esf->r0 = K_ERR_KERNEL_OOPS;
-		}
-#endif
-
-		z_arc_fatal_error(esf->r0, esf);
+	if (vector == 0x9 && parameter == _TRAP_S_CALL_RUNTIME_EXCEPT) {
+		_NanoFatalErrorHandler(esf->r0, esf);
 		return;
 	}
 
-	LOG_ERR("***** Exception vector: 0x%x, cause code: 0x%x, parameter 0x%x",
-		vector, cause, parameter);
-	LOG_ERR("Address 0x%x", exc_addr);
-#ifdef CONFIG_ARC_EXCEPTION_DEBUG
-	dump_exception_info(vector, cause, parameter);
-#endif
-
+	printk("Exception vector: 0x%x, cause code: 0x%x, parameter 0x%x\n",
+	       vector, code, parameter);
+	printk("Address 0x%x\n", exc_addr);
 #ifdef CONFIG_ARC_STACK_CHECKING
-	/* Vector 6 = EV_ProV. Regardless of cause, parameter 2 means stack
+	/* Vector 6 = EV_ProV. Regardless of code, parameter 2 means stack
 	 * check violation
-	 * stack check and mpu violation can come out together, then
-	 * parameter = 0x2 | [0x4 | 0x8 | 0x1]
 	 */
-	if (vector == ARC_EV_PROT_V && parameter & 0x2) {
-		z_arc_fatal_error(K_ERR_STACK_CHK_FAIL, esf);
+	if (vector == 6 && parameter == 2) {
+		_NanoFatalErrorHandler(_NANO_ERR_STACK_CHK_FAIL, esf);
 		return;
 	}
 #endif
-
-#ifdef CONFIG_MPU_STACK_GUARD
-	if (vector == ARC_EV_PROT_V && ((parameter == 0x4) ||
-					(parameter == 0x24))) {
-		if (z_check_thread_stack_fail(exc_addr, old_sp)) {
-			z_arc_fatal_error(K_ERR_STACK_CHK_FAIL, esf);
-			return;
-		}
-	}
-#endif
-	z_arc_fatal_error(K_ERR_CPU_EXCEPTION, esf);
+	_NanoFatalErrorHandler(_NANO_ERR_HW_EXCEPTION, esf);
 }

arch/arc/core/fault_s.S

@@ -12,14 +12,13 @@
  * Fault handlers for ARCv2 processors.
  */
 
-#include <zephyr/toolchain.h>
-#include <zephyr/linker/sections.h>
-#include <zephyr/arch/cpu.h>
+#include <toolchain.h>
+#include <linker/sections.h>
+#include <arch/cpu.h>
 #include <swap_macros.h>
-#include <zephyr/syscall.h>
-#include <zephyr/arch/arc/asm-compat/assembler.h>
 
 GTEXT(_Fault)
+GTEXT(_do_kernel_oops)
 GTEXT(__reset)
 GTEXT(__memory_error)
 GTEXT(__instruction_error)
@@ -34,29 +33,18 @@ GTEXT(__ev_extension)
 GTEXT(__ev_div_zero)
 GTEXT(__ev_dc_error)
 GTEXT(__ev_maligned)
-
-.macro _save_exc_regs_into_stack
-#ifdef CONFIG_ARC_HAS_SECURE
-	/* ERSEC_STAT is IOW/RAZ in normal mode */
-	lr r0,[_ARC_V2_ERSEC_STAT]
-	st_s r0, [sp, ___isf_t_sec_stat_OFFSET]
+#ifdef CONFIG_IRQ_OFFLOAD
+GTEXT(_irq_do_offload);
 #endif
-	LRR r0, [_ARC_V2_ERET]
-	STR r0, sp, ___isf_t_pc_OFFSET
-	LRR r0, [_ARC_V2_ERSTATUS]
-	STR r0, sp, ___isf_t_status32_OFFSET
-.endm
 
-/*
- * The exception handling will use top part of interrupt stack to
- * get smaller memory footprint, because exception is not frequent.
- * To reduce the impact on interrupt handling, especially nested interrupt
- * the top part of interrupt stack cannot be too large, so add a check
- * here
- */
-#if CONFIG_ARC_EXCEPTION_STACK_SIZE > (CONFIG_ISR_STACK_SIZE >> 1)
-#error "interrupt stack size is too small"
-#endif
+GDATA(exc_nest_count)
+
+	.balign 4
+SECTION_VAR(BSS, saved_value)
+	.word 0
+
+/* the necessary stack size for exception handling */
+#define EXCEPTION_STACK_SIZE 384
 
 /*
  * @brief Fault handler installed in the fault and reserved vectors
@@ -76,15 +64,24 @@ SECTION_SUBSEC_FUNC(TEXT,__fault,__ev_dc_error)
 SECTION_SUBSEC_FUNC(TEXT,__fault,__ev_maligned)
 
 _exc_entry:
+
+#ifdef CONFIG_ARC_STACK_CHECKING
+	st r0, [saved_value]
+	/* disable stack checking */
+	lr r0, [_ARC_V2_STATUS32]
+	bclr r0, r0, _ARC_V2_STATUS32_SC_BIT
+	kflag r0
+	ld r0, [saved_value]
+#endif
+	st sp, [saved_value]
 	/*
 	 * re-use the top part of interrupt stack as exception
 	 * stack. If this top part is used by interrupt handling,
 	 * and exception is raised, then here it's guaranteed that
 	 * exception handling has necessary stack to use
 	 */
-	MOVR ilink, sp
-	_get_curr_cpu_irq_stack sp
-	SUBR sp, sp, (CONFIG_ISR_STACK_SIZE - CONFIG_ARC_EXCEPTION_STACK_SIZE)
+	mov_s sp, _interrupt_stack
+	add sp, sp, EXCEPTION_STACK_SIZE
 
 	/*
 	 * save caller saved registers
@@ -97,35 +94,33 @@ _exc_entry:
 	 */
 	_create_irq_stack_frame
 
-	_save_exc_regs_into_stack
+#ifdef CONFIG_ARC_HAS_SECURE
+	lr r0,[_ARC_V2_ERSEC_STAT]
+	st_s r0, [sp, ___isf_t_sec_stat_OFFSET]
+#endif
+	lr r0,[_ARC_V2_ERSTATUS]
+	st_s r0, [sp, ___isf_t_status32_OFFSET]
+	lr r0,[_ARC_V2_ERET]
+	st_s r0, [sp, ___isf_t_pc_OFFSET] /* eret into pc */
 
 	/* sp is parameter of _Fault */
-	MOVR r0, sp
-	/* ilink is the thread's original sp */
-	MOVR r1, ilink
+	mov r0, sp
 	jl _Fault
 
 _exc_return:
-/* the exception cause must be fixed in exception handler when exception returns
- * directly, or exception will be repeated.
- *
- * If thread switch is raised in exception handler, the context of old thread will
- * not be saved, i.e., it cannot be recovered, because we don't know where the
- * exception comes out,  thread context?irq_context?nest irq context?
- */
 
-	_get_next_switch_handle
+#ifdef CONFIG_PREEMPT_ENABLED
+	mov_s r1, _kernel
+	ld_s r2, [r1, _kernel_offset_to_current]
 
-	BREQR r0, 0, _exc_return_from_exc
+	/* check if the current thread needs to be rescheduled */
+	ld_s r0, [r1, _kernel_offset_to_ready_q_cache]
+	breq r0, r2, _exc_return_from_exc
 
-	/* Save old thread into switch handle which is required by z_sched_switch_spin which
-	 * will be called during old thread abort.
-	 */
-	STR r2, r2, ___thread_t_switch_handle_OFFSET
+	ld_s r2, [r1, _kernel_offset_to_ready_q_cache]
+	st_s r2, [r1, _kernel_offset_to_current]
 
-	MOVR r2, r0
-
-#ifdef CONFIG_ARC_SECURE_FIRMWARE
+#ifdef CONFIG_ARC_HAS_SECURE
 	/*
 	 * sync up the ERSEC_STAT.ERM and SEC_STAT.IRM.
 	 * use a fake interrupt return to simulate an exception turn.
@@ -134,103 +129,164 @@ _exc_return:
 	 */
 	lr r3,[_ARC_V2_ERSEC_STAT]
 	btst r3, 31
-	bset.nz r3, r3, _ARC_V2_SEC_STAT_IRM_BIT
-	bclr.z r3, r3, _ARC_V2_SEC_STAT_IRM_BIT
-	sflag r3
+	bset.nz r3, r3, 3
+	bclr.z r3, r3, 3
+	/* sflag r3 */
+	/* sflag instruction is not supported in current ARC GNU */
+	.long 0x00ff302f
 #endif
-	/* clear AE bit to forget this was an exception, and go to
-	 * register bank0 (if exception is raised in firq with 2 reg
-	 * banks, then we may be bank1)
-	 */
-#if defined(CONFIG_ARC_FIRQ) && CONFIG_RGF_NUM_BANKS != 1
-	/* save r2 in ilink because of the possible following reg
-	 * bank switch
-	 */
-	mov ilink, r2
-#endif
-	LRR r3, [_ARC_V2_STATUS32]
-	ANDR r3, r3, (~(_ARC_V2_STATUS32_AE | _ARC_V2_STATUS32_RB(7)))
+	/* clear AE bit to forget this was an exception */
+	lr r3, [_ARC_V2_STATUS32]
+	and r3,r3,(~_ARC_V2_STATUS32_AE)
 	kflag r3
-	/* pretend lowest priority interrupt happened to use common handler
-	 * if exception is raised in irq, i.e., _ARC_V2_AUX_IRQ_ACT !=0,
-	 * ignore irq handling, we cannot return to irq handling which may
-	 * raise exception again. The ignored interrupts will be re-triggered
-	 * if not cleared, or re-triggered by interrupt sources, or just missed
-	 */
+	/* pretend lowest priority interrupt happened to use common handler */
+	lr r3, [_ARC_V2_AUX_IRQ_ACT]
+	or r3,r3,(1<<(CONFIG_NUM_IRQ_PRIO_LEVELS-1)) /* use lowest */
+	sr r3, [_ARC_V2_AUX_IRQ_ACT]
 
-#ifdef CONFIG_ARC_SECURE_FIRMWARE
-	mov_s r3, (1 << (ARC_N_IRQ_START_LEVEL - 1))
-#else
-	MOVR r3, (1 << (CONFIG_NUM_IRQ_PRIO_LEVELS - 1))
+	/* Assumption: r2 has current thread */
+	b _rirq_common_interrupt_swap
 #endif
 
-#ifdef CONFIG_ARC_NORMAL_FIRMWARE
-	push_s r2
-	mov_s r0, _ARC_V2_AUX_IRQ_ACT
-	mov_s r1, r3
-	mov_s r6, ARC_S_CALL_AUX_WRITE
-	sjli SJLI_CALL_ARC_SECURE
-	pop_s r2
-#else
-	SRR r3, [_ARC_V2_AUX_IRQ_ACT]
-#endif
-
-#if defined(CONFIG_ARC_FIRQ) && CONFIG_RGF_NUM_BANKS != 1
-	mov r2, ilink
-#endif
-
-	/* Assumption: r2 has next thread */
-	b _rirq_newthread_switch
-
 _exc_return_from_exc:
-	/* exception handler may change return address.
-	 * reload it
-	 */
-	LDR r0, sp, ___isf_t_pc_OFFSET
-	SRR r0, [_ARC_V2_ERET]
-
 	_pop_irq_stack_frame
-	MOVR sp, ilink
+	ld sp, [saved_value]
 	rtie
 
-/* separated entry for trap which may be used by irq_offload, USERPSACE */
+
 SECTION_SUBSEC_FUNC(TEXT,__fault,__ev_trap)
 	/* get the id of trap_s */
-	LRR ilink, [_ARC_V2_ECR]
-	ANDR ilink, ilink, 0x3f
+	lr ilink, [_ARC_V2_ECR]
+	and ilink, ilink, 0x3f
 #ifdef CONFIG_USERSPACE
 	cmp ilink, _TRAP_S_CALL_SYSTEM_CALL
 	bne _do_non_syscall_trap
-	/* do sys_call */
-	mov ilink, K_SYSCALL_LIMIT
+/* do sys_call */
+	mov ilink, _SYSCALL_LIMIT
 	cmp r6, ilink
-	blo valid_syscall_id
+	blt valid_syscall_id
 
-	mov_s r0, r6
-	mov_s r6, K_SYSCALL_BAD
+	mov r0, r6
+	mov r6, _SYSCALL_BAD
 
 valid_syscall_id:
-	/* create a sys call frame
-	 * caller regs (r0 - 12) are saved in _create_irq_stack_frame
-	 * ok to use them later
-	 */
-	_create_irq_stack_frame
+#ifdef CONFIG_ARC_HAS_SECURE
+	lr ilink, [_ARC_V2_ERSEC_STAT]
+	push ilink
+#endif
+	lr ilink, [_ARC_V2_ERET]
+	push ilink
+	lr ilink, [_ARC_V2_ERSTATUS]
+	push ilink
 
-	_save_exc_regs_into_stack
 
-	/* exc return and do sys call in kernel mode,
-	 * so need to clear U bit, r0 is already loaded
-	 * with ERSTATUS in _save_exc_regs_into_stack
-	 */
+	bclr ilink, ilink, _ARC_V2_STATUS32_U_BIT
+	sr ilink, [_ARC_V2_ERSTATUS]
 
-	bclr r0, r0, _ARC_V2_STATUS32_U_BIT
-	sr r0, [_ARC_V2_ERSTATUS]
-
-	mov_s r0, _arc_do_syscall
-	sr r0, [_ARC_V2_ERET]
+	mov ilink, _arc_do_syscall
+	sr ilink, [_ARC_V2_ERET]
 
 	rtie
 
 _do_non_syscall_trap:
 #endif /* CONFIG_USERSPACE */
+#ifdef CONFIG_IRQ_OFFLOAD
+	/*
+	 * IRQ_OFFLOAD is to simulate interrupt handling through exception,
+	 * so its entry is different with normal exception handling, it is
+	 * handled in isr stack
+	 */
+	cmp ilink, _TRAP_S_SCALL_IRQ_OFFLOAD
+	bne _exc_entry
+	/* save caller saved registers */
+	_create_irq_stack_frame
+
+#ifdef CONFIG_ARC_HAS_SECURE
+	lr r0,[_ARC_V2_ERSEC_STAT]
+	st_s r0, [sp, ___isf_t_sec_stat_OFFSET]
+#endif
+	lr r0,[_ARC_V2_ERSTATUS]
+	st_s r0, [sp, ___isf_t_status32_OFFSET]
+	lr r0,[_ARC_V2_ERET]
+	st_s r0, [sp, ___isf_t_pc_OFFSET] /* eret into pc */
+
+#ifdef CONFIG_ARC_STACK_CHECKING
+	/* disable stack checking */
+	lr r0, [_ARC_V2_STATUS32]
+	bclr r0, r0, _ARC_V2_STATUS32_SC_BIT
+	kflag r0
+#endif
+
+	ld r1, [exc_nest_count]
+	add r0, r1, 1
+	st r0, [exc_nest_count]
+	cmp r1, 0
+
+	bgt.d  exc_nest_handle
+	mov r0, sp
+
+	mov r1, _kernel
+	ld sp, [r1, _kernel_offset_to_irq_stack]
+exc_nest_handle:
+	push_s r0
+
+	jl _irq_do_offload
+
+	pop sp
+
+	mov	r1, exc_nest_count
+	ld	r0, [r1]
+	sub	r0, r0, 1
+	cmp	r0, 0
+	bne.d	_exc_return_from_exc
+	st 	r0, [r1]
+
+#ifdef CONFIG_PREEMPT_ENABLED
+	mov_s r1, _kernel
+	ld_s r2, [r1, _kernel_offset_to_current]
+
+	/* check if the current thread needs to be rescheduled */
+	ld_s r0, [r1, _kernel_offset_to_ready_q_cache]
+	breq r0, r2, _exc_return_from_irqoffload_trap
+
+	_save_callee_saved_regs
+
+	st _CAUSE_RIRQ, [r2, _thread_offset_to_relinquish_cause]
+	/* note: Ok to use _CAUSE_RIRQ since everything is saved */
+
+	ld_s r2, [r1, _kernel_offset_to_ready_q_cache]
+	st_s r2, [r1, _kernel_offset_to_current]
+
+#ifdef CONFIG_ARC_HAS_SECURE
+	/*
+	 * sync up the ERSEC_STAT.ERM and SEC_STAT.IRM.
+	 * use a fake interrupt return to simulate an exception turn.
+	 * ERM and IRM record which mode the cpu should return, 1: secure
+	 * 0: normal
+	 */
+	lr r3,[_ARC_V2_ERSEC_STAT]
+	btst r3, 31
+	bset.nz r3, r3, 3
+	bclr.z r3, r3, 3
+	/* sflag r3 */
+	/* sflag instruction is not supported in current ARC GNU */
+	.long 0x00ff302f
+#endif
+	/* clear AE bit to forget this was an exception */
+	lr r3, [_ARC_V2_STATUS32]
+	and r3,r3,(~_ARC_V2_STATUS32_AE)
+	kflag r3
+	/* pretend lowest priority interrupt happened to use common handler */
+	lr r3, [_ARC_V2_AUX_IRQ_ACT]
+	or r3,r3,(1<<(CONFIG_NUM_IRQ_PRIO_LEVELS-1)) /* use lowest */
+	sr r3, [_ARC_V2_AUX_IRQ_ACT]
+
+	/* Assumption: r2 has current thread */
+	b _rirq_common_interrupt_swap
+#endif
+
+_exc_return_from_irqoffload_trap:
+	_pop_irq_stack_frame
+	rtie
+#endif /* CONFIG_IRQ_OFFLOAD */
 	b _exc_entry

arch/arc/core/irq_manage.c

@@ -17,191 +17,51 @@
  * number from 16 to last IRQ number on the platform.
  */
 
-#include <zephyr/kernel.h>
-#include <zephyr/arch/cpu.h>
-#include <zephyr/sys/__assert.h>
-#include <zephyr/toolchain.h>
-#include <zephyr/linker/sections.h>
-#include <zephyr/sw_isr_table.h>
-#include <zephyr/irq.h>
-#include <zephyr/sys/printk.h>
-
+#include <kernel.h>
+#include <arch/cpu.h>
+#include <misc/__assert.h>
+#include <toolchain.h>
+#include <linker/sections.h>
+#include <sw_isr_table.h>
+#include <irq.h>
+#include <misc/printk.h>
 
 /*
- * storage space for the interrupt stack of fast_irq
- */
-#if defined(CONFIG_ARC_FIRQ_STACK)
-#if defined(CONFIG_SMP)
-K_KERNEL_STACK_ARRAY_DEFINE(_firq_interrupt_stack, CONFIG_MP_MAX_NUM_CPUS,
-			    CONFIG_ARC_FIRQ_STACK_SIZE);
-#else
-K_KERNEL_STACK_DEFINE(_firq_interrupt_stack, CONFIG_ARC_FIRQ_STACK_SIZE);
-#endif
-
-/**
- * @brief Set the stack pointer for firq handling
- */
-void z_arc_firq_stack_set(void)
-{
-#ifdef CONFIG_SMP
-	char *firq_sp = Z_KERNEL_STACK_BUFFER(
-		  _firq_interrupt_stack[z_arc_v2_core_id()]) +
-		  CONFIG_ARC_FIRQ_STACK_SIZE;
-#else
-	char *firq_sp = Z_KERNEL_STACK_BUFFER(_firq_interrupt_stack) +
-		  CONFIG_ARC_FIRQ_STACK_SIZE;
-#endif
-
-/* the z_arc_firq_stack_set must be called when irq diasbled, as
- * it can be called not only in the init phase but also other places
- */
-	unsigned int key = arch_irq_lock();
-
-	__asm__ volatile (
-/* only ilink will not be banked, so use ilink as channel
- * between 2 banks
- */
-	"mov %%ilink, %0\n\t"
-	"lr %0, [%1]\n\t"
-	"or %0, %0, %2\n\t"
-	"kflag %0\n\t"
-	"mov %%sp, %%ilink\n\t"
-/* switch back to bank0, use ilink to avoid the pollution of
- * bank1's gp regs.
- */
-	"lr %%ilink, [%1]\n\t"
-	"and %%ilink, %%ilink, %3\n\t"
-	"kflag %%ilink\n\t"
-	:
-	: "r"(firq_sp), "i"(_ARC_V2_STATUS32),
-	  "i"(_ARC_V2_STATUS32_RB(1)),
-	  "i"(~_ARC_V2_STATUS32_RB(7))
-	);
-	arch_irq_unlock(key);
-}
-#endif
-
-/*
- * ARC CPU interrupt controllers hierarchy.
- *
- * Single-core (UP) case:
- *
- *   --------------------------
- *   |  CPU core 0            |
- *   --------------------------
- *   |  core 0 (private)      |
- *   |  interrupt controller  |
- *   --------------------------
- *               |
- *      [internal interrupts]
- *      [external interrupts]
- *
- *
- * Multi-core (SMP) case:
- *
- *   --------------------------               --------------------------
- *   |  CPU core 0            |               |  CPU core 1            |
- *   --------------------------               --------------------------
- *   |  core 0 (private)      |               |  core 1 (private)      |
- *   |  interrupt controller  |               |  interrupt controller  |
- *   --------------------------               --------------------------
- *     |    |      |                                |     |      |
- *     |    | [core 0 private internal interrupts]  |     |   [core 1 private internal interrupts]
- *     |    |                                       |     |
- *     |    |                                       |     |
- *     |   -------------------------------------------    |
- *     |   |     IDU (Interrupt Distribution Unit)   |    |
- *     |   -------------------------------------------    |
- *     |                       |                          |
- *     |          [common (shared) interrupts]            |
- *     |                                                  |
- *     |                                                  |
- *   [core 0 private external interrupts]               [core 1 private external interrupts]
- *
- *
- *
- *  The interrupts are grouped in HW in the same order - firstly internal interrupts
- *  (with lowest line numbers in IVT), than common interrupts (if present), than external
- *  interrupts (with highest line numbers in IVT).
- *
- *  NOTE: in case of SMP system we currently support in Zephyr only private internal and common
- *  interrupts, so the core-private external interrupts are currently not supported for SMP.
- */
-
-/**
  * @brief Enable an interrupt line
  *
  * Clear possible pending interrupts on the line, and enable the interrupt
  * line. After this call, the CPU will receive interrupts for the specified
  * @a irq.
+ *
+ * @return N/A
  */
-void arch_irq_enable(unsigned int irq);
 
-/**
+void _arch_irq_enable(unsigned int irq)
+{
+	int key = irq_lock();
+
+	_arc_v2_irq_unit_int_enable(irq);
+	irq_unlock(key);
+}
+
+/*
  * @brief Disable an interrupt line
  *
  * Disable an interrupt line. After this call, the CPU will stop receiving
  * interrupts for the specified @a irq.
- */
-void arch_irq_disable(unsigned int irq);
-
-/**
- * @brief Return IRQ enable state
  *
- * @param irq IRQ line
- * @return interrupt enable state, true or false
+ * @return N/A
  */
-int arch_irq_is_enabled(unsigned int irq);
 
-#ifdef CONFIG_ARC_CONNECT
-
-#define IRQ_NUM_TO_IDU_NUM(id)		((id) - ARC_CONNECT_IDU_IRQ_START)
-#define IRQ_IS_COMMON(id)		((id) >= ARC_CONNECT_IDU_IRQ_START)
-
-void arch_irq_enable(unsigned int irq)
+void _arch_irq_disable(unsigned int irq)
 {
-	if (IRQ_IS_COMMON(irq)) {
-		z_arc_connect_idu_set_mask(IRQ_NUM_TO_IDU_NUM(irq), 0x0);
-	} else {
-		z_arc_v2_irq_unit_int_enable(irq);
-	}
+	int key = irq_lock();
+
+	_arc_v2_irq_unit_int_disable(irq);
+	irq_unlock(key);
 }
 
-void arch_irq_disable(unsigned int irq)
-{
-	if (IRQ_IS_COMMON(irq)) {
-		z_arc_connect_idu_set_mask(IRQ_NUM_TO_IDU_NUM(irq), 0x1);
-	} else {
-		z_arc_v2_irq_unit_int_disable(irq);
-	}
-}
-
-int arch_irq_is_enabled(unsigned int irq)
-{
-	if (IRQ_IS_COMMON(irq)) {
-		return !z_arc_connect_idu_read_mask(IRQ_NUM_TO_IDU_NUM(irq));
-	} else {
-		return z_arc_v2_irq_unit_int_enabled(irq);
-	}
-}
-#else
-void arch_irq_enable(unsigned int irq)
-{
-	z_arc_v2_irq_unit_int_enable(irq);
-}
-
-void arch_irq_disable(unsigned int irq)
-{
-	z_arc_v2_irq_unit_int_disable(irq);
-}
-
-int arch_irq_is_enabled(unsigned int irq)
-{
-	return z_arc_v2_irq_unit_int_enabled(irq);
-}
-#endif /* CONFIG_ARC_CONNECT */
-
-/**
+/*
  * @internal
  *
  * @brief Set an interrupt's priority
@@ -211,47 +71,36 @@ int arch_irq_is_enabled(unsigned int irq)
 
  * The priority is verified if ASSERT_ON is enabled; max priority level
  * depends on CONFIG_NUM_IRQ_PRIO_LEVELS.
+ *
+ * @return N/A
  */
 
-void z_irq_priority_set(unsigned int irq, unsigned int prio, uint32_t flags)
+void _irq_priority_set(unsigned int irq, unsigned int prio, u32_t flags)
 {
 	ARG_UNUSED(flags);
 
+	int key = irq_lock();
+
 	__ASSERT(prio < CONFIG_NUM_IRQ_PRIO_LEVELS,
 		 "invalid priority %d for irq %d", prio, irq);
-/* 0 -> CONFIG_NUM_IRQ_PRIO_LEVELS allocated to secure world
- * left prio levels allocated to normal world
- */
-#if defined(CONFIG_ARC_SECURE_FIRMWARE)
-	prio = prio < ARC_N_IRQ_START_LEVEL ?
-		prio : (ARC_N_IRQ_START_LEVEL - 1);
-#elif defined(CONFIG_ARC_NORMAL_FIRMWARE)
-	prio = prio < ARC_N_IRQ_START_LEVEL ?
-		 ARC_N_IRQ_START_LEVEL : prio;
-#endif
-	z_arc_v2_irq_unit_prio_set(irq, prio);
+	_arc_v2_irq_unit_prio_set(irq, prio);
+	irq_unlock(key);
 }
 
-/**
+/*
  * @brief Spurious interrupt handler
  *
  * Installed in all dynamic interrupt slots at boot time. Throws an error if
  * called.
+ *
+ * @return N/A
  */
 
-void z_irq_spurious(const void *unused)
+void _irq_spurious(void *unused)
 {
 	ARG_UNUSED(unused);
-	z_fatal_error(K_ERR_SPURIOUS_IRQ, NULL);
+	printk("_irq_spurious(). Spinning...\n");
+	for (;;)
+		;
 }
 
-#ifdef CONFIG_DYNAMIC_INTERRUPTS
-int arch_irq_connect_dynamic(unsigned int irq, unsigned int priority,
-			     void (*routine)(const void *parameter),
-			     const void *parameter, uint32_t flags)
-{
-	z_isr_install(irq, routine, parameter);
-	z_irq_priority_set(irq, priority, flags);
-	return irq;
-}
-#endif /* CONFIG_DYNAMIC_INTERRUPTS */

arch/arc/core/irq_offload.c

@@ -1,6 +1,5 @@
 /*
  * Copyright (c) 2015 Intel corporation
- * Copyright (c) 2022 Synopsys
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -9,63 +8,30 @@
  * @file Software interrupts utility code - ARC implementation
  */
 
-#include <zephyr/kernel.h>
-#include <zephyr/irq_offload.h>
-#include <zephyr/init.h>
+#include <kernel.h>
+#include <irq_offload.h>
 
-/* Choose a reasonable default for interrupt line which is used for irq_offload with the option
- * to override it by setting interrupt line via device tree.
- */
-#if DT_NODE_EXISTS(DT_NODELABEL(test_irq_offload_line_0))
-#define IRQ_OFFLOAD_LINE	DT_IRQN(DT_NODELABEL(test_irq_offload_line_0))
-#else
-/* Last two lined are already used in the IRQ tests, so we choose 3rd from the end line */
-#define IRQ_OFFLOAD_LINE	(CONFIG_NUM_IRQS - 3)
-#endif
+static irq_offload_routine_t offload_routine;
+static void *offload_param;
 
-#define IRQ_OFFLOAD_PRIO	0
-
-#define CURR_CPU (IS_ENABLED(CONFIG_SMP) ? arch_curr_cpu()->id : 0)
-
-static struct {
-	volatile irq_offload_routine_t fn;
-	const void *volatile arg;
-} offload_params[CONFIG_MP_MAX_NUM_CPUS];
-
-static void arc_irq_offload_handler(const void *unused)
+/* Called by trap_s exception handler */
+void _irq_do_offload(void)
 {
-	ARG_UNUSED(unused);
-
-	offload_params[CURR_CPU].fn(offload_params[CURR_CPU].arg);
+	offload_routine(offload_param);
 }
 
-void arch_irq_offload(irq_offload_routine_t routine, const void *parameter)
+void irq_offload(irq_offload_routine_t routine, void *parameter)
 {
-	offload_params[CURR_CPU].fn = routine;
-	offload_params[CURR_CPU].arg = parameter;
-	compiler_barrier();
+	int key;
 
-	z_arc_v2_aux_reg_write(_ARC_V2_AUX_IRQ_HINT, IRQ_OFFLOAD_LINE);
+	key = irq_lock();
+	offload_routine = routine;
+	offload_param = parameter;
 
-	__asm__ volatile("sync");
+	__asm__ volatile ("trap_s %[id]"
+		:
+		: [id] "i"(_TRAP_S_SCALL_IRQ_OFFLOAD) : );
 
-	/* If _current was aborted in the offload routine, we shouldn't be here */
-	__ASSERT_NO_MSG((_current->base.thread_state & _THREAD_DEAD) == 0);
+	irq_unlock(key);
 }
 
-/* need to be executed on every core in the system */
-int arc_irq_offload_init(void)
-{
-
-	IRQ_CONNECT(IRQ_OFFLOAD_LINE, IRQ_OFFLOAD_PRIO, arc_irq_offload_handler, NULL, 0);
-
-	/* The line is triggered and controlled with core private interrupt controller,
-	 * so even in case common (IDU) interrupt line usage on SMP we need to enable it not
-	 * with generic irq_enable() but via z_arc_v2_irq_unit_int_enable().
-	 */
-	z_arc_v2_irq_unit_int_enable(IRQ_OFFLOAD_LINE);
-
-	return 0;
-}
-
-SYS_INIT(arc_irq_offload_init, POST_KERNEL, 0);

arch/arc/core/isr_wrapper.S

@@ -14,19 +14,37 @@
  */
 
 #include <offsets_short.h>
-#include <zephyr/toolchain.h>
-#include <zephyr/linker/sections.h>
-#include <zephyr/sw_isr_table.h>
-#include <zephyr/kernel_structs.h>
-#include <zephyr/arch/cpu.h>
-#include <swap_macros.h>
-#include <zephyr/arch/arc/asm-compat/assembler.h>
+#include <toolchain.h>
+#include <linker/sections.h>
+#include <sw_isr_table.h>
+#include <kernel_structs.h>
+#include <arch/cpu.h>
 
 GTEXT(_isr_wrapper)
 GTEXT(_isr_demux)
 
-#if defined(CONFIG_PM)
-GTEXT(z_pm_save_idle_exit)
+GDATA(exc_nest_count)
+SECTION_VAR(BSS, exc_nest_count)
+	.balign 4
+	.word 0
+
+
+#if CONFIG_RGF_NUM_BANKS == 1
+GDATA(saved_r0)
+
+SECTION_VAR(BSS, saved_r0)
+	.balign 4
+	.word 0
+#else
+GDATA(saved_sp)
+
+SECTION_VAR(BSS, saved_sp)
+	.balign 4
+	.word 0
+#endif
+
+#if defined(CONFIG_SYS_POWER_MANAGEMENT)
+GTEXT(_sys_power_save_idle_exit)
 #endif
 
 /*
@@ -36,38 +54,47 @@ _rirq_enter/_firq_enter: they are jump points.
 The flow is the following:
 
 ISR -> _isr_wrapper -- + -> _rirq_enter -> _isr_demux -> ISR -> _rirq_exit
-			 |
-			 + -> _firq_enter -> _isr_demux -> ISR -> _firq_exit
+                       |
+                       + -> _firq_enter -> _isr_demux -> ISR -> _firq_exit
 
 Context switch explanation:
 
 The context switch code is spread in these files:
 
-	isr_wrapper.s, switch.s, swap_macros.h, fast_irq.s, regular_irq.s
+  isr_wrapper.s, swap.s, swap_macros.s, fast_irq.s, regular_irq.s
 
 IRQ stack frame layout:
 
-	high address
+  high address
 
-	status32
-		pc
-	lp_count
-	lp_start
-	lp_end
-	blink
-	 r13
-	 ...
-	sp ->    r0
+           status32
+              pc
+           lp_count
+           lp_start
+            lp_end
+            blink
+             r13
+             ...
+    sp ->    r0
 
-	low address
+  low address
+
+Registers not taken into account in the current implementation.
+          jli_base
+          ldi_base
+          ei_base
+          accl
+          acch
 
 The context switch code adopts this standard so that it is easier to follow:
 
-	- r2 contains _kernel.current ASAP, and the incoming thread when we
-		transition from outgoing thread to incoming thread
+  - r1 contains _kernel ASAP and is not overwritten over the lifespan of
+    the functions.
+  - r2 contains _kernel.current ASAP, and the incoming thread when we
+    transition from outgoing thread to incoming thread
 
 Not loading _kernel into r0 allows loading _kernel without stomping on
-the parameter in r0 in arch_switch().
+the parameter in r0 in _Swap().
 
 
 ARCv2 processors have two kinds of interrupts: fast (FIRQ) and regular. The
@@ -99,49 +126,47 @@ done upfront, and the rest is done when needed:
 
 o RIRQ
 
-	All needed registers to run C code in the ISR are saved automatically
-	on the outgoing thread's stack: loop, status32, pc, and the caller-
-	saved GPRs. That stack frame layout is pre-determined. If returning
-	to a thread, the stack is popped and no registers have to be saved by
-	the kernel. If a context switch is required, the callee-saved GPRs
-	are then saved in the thread's stack.
+  All needed regisers to run C code in the ISR are saved automatically
+  on the outgoing thread's stack: loop, status32, pc, and the caller-
+  saved GPRs. That stack frame layout is pre-determined. If returning
+  to a thread, the stack is popped and no registers have to be saved by
+  the kernel. If a context switch is required, the callee-saved GPRs
+  are then saved in the thread control structure (TCS).
 
 o FIRQ
 
-	First, a FIRQ can be interrupting a lower-priority RIRQ: if this is
-	the case, the FIRQ does not take a scheduling decision and leaves it
-	the RIRQ to handle. This limits the amount of code that has to run at
-	interrupt-level.
+  First, a FIRQ can be interrupting a lower-priority RIRQ: if this is the case,
+  the FIRQ does not take a scheduling decision and leaves it the RIRQ to
+  handle. This limits the amount of code that has to run at interrupt-level.
 
-	CONFIG_RGF_NUM_BANKS==1 case:
-	Registers are saved on the stack frame just as they are for RIRQ.
-	Context switch can happen just as it does in the RIRQ case, however,
-	if the FIRQ interrupted a RIRQ, the FIRQ will return from interrupt
-	and let the RIRQ do the context switch. At entry, one register is
-	needed in order to have code to save other registers. r0 is saved
-	first in the stack and restored later
+  CONFIG_RGF_NUM_BANKS==1 case:
+  Registers are saved on the stack frame just as they are for RIRQ.
+  Context switch can happen just as it does in the RIRQ case, however,
+  if the FIRQ interrupted a RIRQ, the FIRQ will return from interrupt and
+  let the RIRQ do the context switch.  At entry, one register is needed in order
+  to have code to save other registers. r0 is saved first in a global called
+  saved_r0.
 
-	CONFIG_RGF_NUM_BANKS!=1 case:
-	During early initialization, the sp in the 2nd register bank is made to
-	refer to _firq_stack. This allows for the FIRQ handler to use its own
-	stack. GPRs are banked, loop registers are saved in unused callee saved
-	regs upon interrupt entry. If returning to a thread, loop registers are
-	restored and the CPU switches back to bank 0 for the GPRs. If a context
-	switch is needed, at this point only are all the registers saved.
-	First, a  stack frame with the same layout as the automatic RIRQ one is
-	created and then the callee-saved GPRs are saved in the stack.
-	status32_p0 and ilink are saved in this case, not status32 and pc.
-	To create the stack frame, the FIRQ handling code must first go back to
-	using bank0 of registers, since that is where the registers containing
-	the exiting thread are saved. Care must be taken not to touch any
-	register before saving them: the only one usable at that point is the
-	stack pointer.
+  CONFIG_RGF_NUM_BANKS!=1 case:
+  During early initialization, the sp in the 2nd register bank is made to
+  refer to _firq_stack. This allows for the FIRQ handler to use its own stack.
+  GPRs are banked, loop registers are saved in unused callee saved regs upon
+  interrupt entry. If returning to a thread, loop registers are restored and the
+  CPU switches back to bank 0 for the GPRs. If a context switch is
+  needed, at this point only are all the registers saved. First, a
+  stack frame with the same layout as the automatic RIRQ one is created
+  and then the callee-saved GPRs are saved in the TCS. status32_p0 and
+  ilink are saved in this case, not status32 and pc.
+  To create the stack frame, the FIRQ handling code must first go back to using
+  bank0 of registers, since that is where the registers containing the exiting
+  thread are saved. Care must be taken not to touch any register before saving
+  them: the only one usable at that point is the stack pointer.
 
 o coop
 
-	When a coop context switch is done, the callee-saved registers are
-	saved in the stack. The other GPRs do not need to be saved, since the
-	compiler has already placed them on the stack.
+  When a coop context switch is done, the callee-saved registers are
+  saved in the TCS. The other GPRs do not need to be saved, since the
+  compiler has already placed them on the stack.
 
 For restoring the contexts, there are six cases. In all cases, the
 callee-saved registers of the incoming thread have to be restored. Then, there
@@ -149,87 +174,111 @@ are specifics for each case:
 
 From coop:
 
-	o to coop
+  o to coop
 
-		Do a normal function call return.
+    Restore interrupt lock level and do a normal function call return.
 
-	o to any irq
+  o to any irq
 
-	The incoming interrupted thread has an IRQ stack frame containing the
-	caller-saved registers that has to be popped. status32 has to be
-	restored, then we jump to the interrupted instruction.
+    The incoming interrupted thread has an IRQ stack frame containing the
+    caller-saved registers that has to be popped. status32 has to be restored,
+    then we jump to the interrupted instruction.
 
 From FIRQ:
 
-	When CONFIG_RGF_NUM_BANKS==1, context switch is done as it is for RIRQ.
-	When CONFIG_RGF_NUM_BANKS!=1, the processor is put back to using bank0,
-	not bank1 anymore, because it had to save the outgoing context from
-	bank0, and now has to load the incoming one into bank0.
+  When CONFIG_RGF_NUM_BANKS==1, context switch is done as it is for RIRQ.
+  When CONFIG_RGF_NUM_BANKS!=1, the processor is put back to using bank0,
+  not bank1 anymore, because it had to save the outgoing context from bank0,
+  and now has to load the incoming one
+  into bank0.
 
-	o to coop
+  o to coop
 
-	The address of the returning instruction from arch_switch() is loaded
-	in ilink and the saved status32 in status32_p0.
+    The address of the returning instruction from _Swap() is loaded in ilink and
+    the saved status32 in status32_p0, taking care to adjust the interrupt lock
+    state desired in status32_p0. The return value is put in r0.
 
-	o to any irq
+  o to any irq
 
-	The IRQ has saved the caller-saved registers in a stack frame, which
-	must be popped, and status32 and pc loaded in status32_p0 and ilink.
+    The IRQ has saved the caller-saved registers in a stack frame, which must be
+    popped, and statu32 and pc loaded in status32_p0 and ilink.
 
 From RIRQ:
 
-	o to coop
+  o to coop
 
-	The interrupt return mechanism in the processor expects a stack frame,
-	but the outgoing context did not create one. A fake one is created
-	here, with only the relevant values filled in: pc, status32.
+    The interrupt return mechanism in the processor expects a stack frame, but
+    the outgoing context did not create one. A fake one is created here, with
+    only the relevant values filled in: pc, status32 and the return value in r0.
 
-	There is a discrepancy between the ABI from the ARCv2 docs,
-	including the way the processor pushes GPRs in pairs in the IRQ stack
-	frame, and the ABI GCC uses. r13 should be a callee-saved register,
-	but GCC treats it as caller-saved. This means that the processor pushes
-	it in the stack frame along with r12, but the compiler does not save it
-	before entering a function. So, it is saved as part of the callee-saved
-	registers, and restored there, but the processor restores it _a second
-	time_ when popping the IRQ stack frame. Thus, the correct value must
-	also be put in the fake stack frame when returning to a thread that
-	context switched out cooperatively.
+    There is a discrepancy between the ABI from the ARCv2 docs, including the
+    way the processor pushes GPRs in pairs in the IRQ stack frame, and the ABI
+    GCC uses. r13 should be a callee-saved register, but GCC treats it as
+    caller-saved. This means that the processor pushes it in the stack frame
+    along with r12, but the compiler does not save it before entering a
+    function. So, it is saved as part of the callee-saved registers, and
+    restored there, but the processor restores it _a second time_ when popping
+    the IRQ stack frame. Thus, the correct value must also be put in the fake
+    stack frame when returning to a thread that context switched out
+    cooperatively.
 
-	o to any irq
+  o to any irq
 
-	Both types of IRQs already have an IRQ stack frame: simply return from
-	interrupt.
+    Both types of IRQs already have an IRQ stack frame: simply return from
+    interrupt.
  */
 
 SECTION_FUNC(TEXT, _isr_wrapper)
-#ifdef CONFIG_ARC_FIRQ
+#if CONFIG_ARC_FIRQ
 #if CONFIG_RGF_NUM_BANKS == 1
-/* free r0 here, use r0 to check whether irq is firq.
- * for rirq,  as sp will not change and r0 already saved, this action
- * in fact is useless
- * for firq,  r0 will be restored later
- */
-	push r0
+	st r0,[saved_r0]
 #endif
 	lr r0, [_ARC_V2_AUX_IRQ_ACT]
 	ffs r0, r0
 	cmp r0, 0
 #if CONFIG_RGF_NUM_BANKS == 1
 	bnz rirq_path
-	pop r0
 	/* 1-register bank FIRQ handling must save registers on stack */
-	_create_irq_stack_frame
-	lr r0, [_ARC_V2_STATUS32_P0]
-	st_s r0, [sp, ___isf_t_status32_OFFSET]
-	st ilink, [sp, ___isf_t_pc_OFFSET]
-
-	mov_s r3, _firq_exit
-	mov_s r2, _firq_enter
+	lr r0,[_ARC_V2_STATUS32_P0]
+	push_s r0
+	mov r0,ilink
+	push_s r0
+#ifdef CONFIG_CODE_DENSITY
+	lr r0, [_ARC_V2_JLI_BASE]
+	push_s r0
+	lr r0, [_ARC_V2_LDI_BASE]
+	push_s r0
+	lr r0, [_ARC_V2_EI_BASE]
+	push_s r0
+#endif
+	mov r0,lp_count
+	push_s r0
+	lr r0, [_ARC_V2_LP_START]
+	push_s r0
+	lr r0, [_ARC_V2_LP_END]
+	push_s r0
+	push_s blink
+	push_s r13
+	push_s r12
+	push r11
+	push r10
+	push r9
+	push r8
+	push r7
+	push r6
+	push r5
+	push r4
+	push_s r3
+	push_s r2
+	push_s r1
+	ld r0,[saved_r0]
+	push_s r0
+	mov r3, _firq_exit
+	mov r2, _firq_enter
 	j_s [r2]
 rirq_path:
-	add sp, sp, 4
-	mov_s r3, _rirq_exit
-	mov_s r2, _rirq_enter
+	mov r3, _rirq_exit
+	mov r2, _rirq_enter
 	j_s [r2]
 #else
 	mov.z r3, _firq_exit
@@ -239,89 +288,93 @@ rirq_path:
 	j_s [r2]
 #endif
 #else
-	MOVR r3, _rirq_exit
-	MOVR r2, _rirq_enter
+	mov r3, _rirq_exit
+	mov r2, _rirq_enter
 	j_s [r2]
 #endif
 
-/* r0, r1, and r3 will be used in exit_tickless_idle macro */
+#ifdef CONFIG_KERNEL_EVENT_LOGGER_SLEEP
+GTEXT(_sys_k_event_logger_exit_sleep)
+
+.macro log_sleep_k_event
+	clri r0 /* do not interrupt event logger operations */
+	push_s r0
+	push_s blink
+	jl _sys_k_event_logger_exit_sleep
+	pop_s blink
+	pop_s r0
+	seti r0
+.endm
+#else
+	#define log_sleep_k_event
+#endif
+#if defined(CONFIG_KERNEL_EVENT_LOGGER_INTERRUPT)
+GTEXT(_sys_k_event_logger_interrupt)
+
+.macro log_interrupt_k_event
+	clri r0 /* do not interrupt event logger operations */
+	push_s r0
+	push_s blink
+	jl _sys_k_event_logger_interrupt
+	pop_s blink
+	pop_s r0
+	seti r0
+.endm
+#else
+	#define log_interrupt_k_event
+#endif
+
+#if defined(CONFIG_SYS_POWER_MANAGEMENT)
 .macro exit_tickless_idle
-#if defined(CONFIG_PM)
 	clri r0 /* do not interrupt exiting tickless idle operations */
-	MOVR r1, _kernel
-	breq r3, 0, _skip_pm_save_idle_exit
+	push_s r1
+	push_s r0
+	mov_s r1, _kernel
+	ld_s r0, [r1, _kernel_offset_to_idle] /* requested idle duration */
+	breq r0, 0, _skip_sys_power_save_idle_exit
 
 	st 0, [r1, _kernel_offset_to_idle] /* zero idle duration */
-	PUSHR blink
-	jl z_pm_save_idle_exit
-	POPR blink
+	push_s blink
+	jl _sys_power_save_idle_exit
+	pop_s blink
 
-_skip_pm_save_idle_exit:
+_skip_sys_power_save_idle_exit:
+	pop_s r0
+	pop_s r1
 	seti r0
-#endif
 .endm
+#else
+	#define exit_tickless_idle
+#endif
 
 /* when getting here, r3 contains the interrupt exit stub to call */
 SECTION_FUNC(TEXT, _isr_demux)
-	PUSHR r3
+	push_s r3
 
-/* according to ARCv2 ISA, r25, r30, r58, r59 are caller-saved
- * scratch registers, possibly used by interrupt handlers
- */
-	PUSHR r25
-	PUSHR r30
-#ifdef CONFIG_ARC_HAS_ACCL_REGS
-	PUSHR r58
-#ifndef CONFIG_64BIT
-	PUSHR r59
-#endif /* !CONFIG_64BIT */
-#endif
 
-#ifdef CONFIG_SCHED_THREAD_USAGE
-	bl z_sched_usage_stop
-#endif
-
-#ifdef CONFIG_TRACING_ISR
-	bl sys_trace_isr_enter
-#endif
 	/* cannot be done before this point because we must be able to run C */
+	/* r0 is available to be stomped here, and exit_tickless_idle uses it */
 	exit_tickless_idle
+	log_interrupt_k_event
+	log_sleep_k_event
 
 	lr r0, [_ARC_V2_ICAUSE]
 	/* handle software triggered interrupt */
-	lr r3, [_ARC_V2_AUX_IRQ_HINT]
-	brne r3, r0, irq_hint_handled
-	sr 0, [_ARC_V2_AUX_IRQ_HINT]
+	lr	r3, [_ARC_V2_AUX_IRQ_HINT]
+	brne	r3, r0, irq_hint_handled
+	sr	0, [_ARC_V2_AUX_IRQ_HINT]
 irq_hint_handled:
 
 	sub r0, r0, 16
 
-	MOVR r1, _sw_isr_table
-	/* SW ISR table entries are 8-bytes wide for 32bit ISA and
-	 * 16-bytes wide for 64bit ISA */
-	ASLR r0, r0, (ARC_REGSHIFT + 1)
-	ADDR r0, r1, r0
-	/* ISR into r1 */
-	LDR r1, r0, ARC_REGSZ
+	mov r1, _sw_isr_table
+	add3 r0, r1, r0   /* table entries are 8-bytes wide */
+
+	ld_s r1, [r0, 4] /* ISR into r1 */
 	jl_s.d [r1]
-	/* delay slot: ISR parameter into r0 */
-	LDR r0, r0
-
-#ifdef CONFIG_TRACING_ISR
-	bl sys_trace_isr_exit
-#endif
-
-#ifdef CONFIG_ARC_HAS_ACCL_REGS
-#ifndef CONFIG_64BIT
-	POPR r59
-#endif /* !CONFIG_64BIT */
-	POPR r58
-#endif
-
-	POPR r30
-	POPR r25
+	ld_s r0, [r0] /* delay slot: ISR parameter into r0  */
 
 	/* back from ISR, jump to exit stub */
-	POPR r3
+	pop_s r3
 	j_s [r3]
-	nop_s
+	nop

arch/arc/core/mpu/CMakeLists.txt

@@ -1,6 +1,4 @@
-# SPDX-License-Identifier: Apache-2.0
-
 zephyr_library()
 
-zephyr_library_sources_ifdef(CONFIG_ARC_CORE_MPU arc_core_mpu.c)
-zephyr_library_sources_ifdef(CONFIG_ARC_MPU arc_mpu.c)
+zephyr_library_sources_if_kconfig(arc_core_mpu.c)
+zephyr_library_sources_if_kconfig(arc_mpu.c)

arch/arc/core/mpu/Kconfig

@@ -1,39 +1,40 @@
-# Memory Protection Unit (MPU) configuration options
+# Kconfig - Memory Protection Unit (MPU) configuration options
 
+#
 # Copyright (c) 2017 Synopsys
+#
 # SPDX-License-Identifier: Apache-2.0
-
+#
 config ARC_MPU_VER
-	int "ARC MPU version"
-	range 2 8
+	int
+	prompt "ARC MPU version"
+	range 2 4
 	default 2
 	help
 	  ARC MPU has several versions. For MPU v2, the minimum region is 2048 bytes;
-	  For other versions, the minimum region is 32 bytes; v4 has secure features,
-	  v6 supports up to 32 regions. Note: MPU v5 & v7 are not supported.
+	  For MPU v3, the minimum region is 32 bytes
 
 config ARC_CORE_MPU
 	bool "ARC Core MPU functionalities"
+	depends on CPU_HAS_MPU
+	default n
 	help
 	  ARC core MPU functionalities
 
 config MPU_STACK_GUARD
 	bool "Thread Stack Guards"
-	depends on ARC_CORE_MPU && ARC_MPU_VER !=2
+	depends on ARC_CORE_MPU && !ARC_STACK_CHECKING
+	default n
 	help
 	  Enable thread stack guards via MPU. ARC supports built-in stack protection.
-	  If your core supports that, it is preferred over MPU stack guard.
-	  For ARC_MPU_VER == 2, it requires 2048 extra bytes and a strong start address
-	  alignment, this will bring big waste of memory, so no support for it.
+	  If your core supports that, it is preferred over MPU stack guard
 
 config ARC_MPU
 	bool "ARC MPU Support"
-	select MPU
-	select SRAM_REGION_PERMISSIONS
+	depends on CPU_HAS_MPU
 	select ARC_CORE_MPU
 	select THREAD_STACK_INFO
-	select GEN_PRIV_STACKS if !(ARC_MPU_VER = 4 || ARC_MPU_VER = 8)
-	select MPU_REQUIRES_POWER_OF_TWO_ALIGNMENT if !(ARC_MPU_VER = 4 || ARC_MPU_VER = 8)
-	select MPU_REQUIRES_NON_OVERLAPPING_REGIONS if (ARC_MPU_VER = 4 || ARC_MPU_VER = 8)
+	select MPU_REQUIRES_POWER_OF_TWO_ALIGNMENT if ARC_MPU_VER = 2
+	default n
 	help
-	  Target has ARC MPU
+	  Target has ARC MPU (currently only works for EMSK 2.2/2.3 ARCEM7D)

arch/arc/core/mpu/arc_core_mpu.c

@@ -4,11 +4,12 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-#include <zephyr/device.h>
-#include <zephyr/init.h>
-#include <zephyr/kernel.h>
-#include <zephyr/arch/arc/v2/mpu/arc_core_mpu.h>
-#include <zephyr/kernel_structs.h>
+#include <device.h>
+#include <init.h>
+#include <kernel.h>
+#include <soc.h>
+#include <arch/arc/v2/mpu/arc_core_mpu.h>
+#include <logging/sys_log.h>
 
 /*
  * @brief Configure MPU for the thread
@@ -20,21 +21,127 @@
 void configure_mpu_thread(struct k_thread *thread)
 {
 	arc_core_mpu_disable();
-	arc_core_mpu_configure_thread(thread);
+#if defined(CONFIG_MPU_STACK_GUARD)
+	configure_mpu_stack_guard(thread);
+#endif
+
+#if defined(CONFIG_USERSPACE)
+	configure_mpu_user_context(thread);
+	configure_mpu_mem_domain(thread);
+#endif
 	arc_core_mpu_enable();
 }
 
+#if defined(CONFIG_MPU_STACK_GUARD)
+/*
+ * @brief Configure MPU stack guard
+ *
+ * This function configures per thread stack guards reprogramming the MPU.
+ * The functionality is meant to be used during context switch.
+ *
+ * @param thread thread info data structure.
+ */
+void configure_mpu_stack_guard(struct k_thread *thread)
+{
 #if defined(CONFIG_USERSPACE)
+	if (thread->thread_base.user_options & K_USER) {
+		/* the areas before and after the user stack of thread is
+		 * kernel only. These area can be used as stack guard.
+		 * -----------------------
+		 * |  kernel only area   |
+		 * |---------------------|
+		 * |  user stack         |
+		 * |---------------------|
+		 * |privilege stack guard|
+		 * |---------------------|
+		 * |  privilege stack    |
+		 * -----------------------
+		 */
+		arc_core_mpu_configure(THREAD_STACK_GUARD_REGION,
+			thread->arch.priv_stack_start - STACK_GUARD_SIZE,
+			STACK_GUARD_SIZE);
+	}
+#endif
+	arc_core_mpu_configure(THREAD_STACK_GUARD_REGION,
+			       thread->stack_info.start - STACK_GUARD_SIZE,
+			       STACK_GUARD_SIZE);
 
-int arch_mem_domain_max_partitions_get(void)
+}
+#endif
+
+#if defined(CONFIG_USERSPACE)
+/*
+ * @brief Configure MPU user context
+ *
+ * This function configures the thread's user context.
+ * The functionality is meant to be used during context switch.
+ *
+ * @param thread thread info data structure.
+ */
+void configure_mpu_user_context(struct k_thread *thread)
+{
+	SYS_LOG_DBG("configure user thread %p's context", thread);
+	arc_core_mpu_configure_user_context(thread);
+}
+
+
+/*
+ * @brief Configure MPU memory domain
+ *
+ * This function configures per thread memory domain reprogramming the MPU.
+ * The functionality is meant to be used during context switch.
+ *
+ * @param thread thread info data structure.
+ */
+void configure_mpu_mem_domain(struct k_thread *thread)
+{
+	SYS_LOG_DBG("configure thread %p's domain", thread);
+	arc_core_mpu_configure_mem_domain(thread->mem_domain_info.mem_domain);
+}
+
+int _arch_mem_domain_max_partitions_get(void)
 {
 	return arc_core_mpu_get_max_domain_partition_regions();
 }
 
+/*
+ * Reset MPU region for a single memory partition
+ */
+void _arch_mem_domain_partition_remove(struct k_mem_domain *domain,
+				       u32_t  partition_id)
+{
+	ARG_UNUSED(domain);
+
+	arc_core_mpu_disable();
+	arc_core_mpu_mem_partition_remove(partition_id);
+	arc_core_mpu_enable();
+
+}
+
+/*
+ * Configure MPU memory domain
+ */
+void _arch_mem_domain_configure(struct k_thread *thread)
+{
+	configure_mpu_mem_domain(thread);
+}
+
+/*
+ * Destroy MPU regions for the mem domain
+ */
+void _arch_mem_domain_destroy(struct k_mem_domain *domain)
+{
+	ARG_UNUSED(domain);
+
+	arc_core_mpu_disable();
+	arc_core_mpu_configure_mem_domain(NULL);
+	arc_core_mpu_enable();
+}
+
 /*
  * Validate the given buffer is user accessible or not
  */
-int arch_buffer_validate(void *addr, size_t size, int write)
+int _arch_buffer_validate(void *addr, size_t size, int write)
 {
 	return arc_core_mpu_buffer_validate(addr, size, write);
 }

arch/arc/core/mpu/arc_mpu.c

@@ -1,58 +1,709 @@
 /*
- * Copyright (c) 2019 Synopsys.
+ * Copyright (c) 2017 Synopsys.
  *
  * SPDX-License-Identifier: Apache-2.0
  */
 
-#include <zephyr/device.h>
-#include <zephyr/init.h>
-#include <zephyr/kernel.h>
-#include <zephyr/arch/arc/v2/aux_regs.h>
-#include <zephyr/arch/arc/v2/mpu/arc_mpu.h>
-#include <zephyr/arch/arc/v2/mpu/arc_core_mpu.h>
-#include <zephyr/linker/linker-defs.h>
+#include <device.h>
+#include <init.h>
+#include <kernel.h>
+#include <soc.h>
+#include <arch/arc/v2/aux_regs.h>
+#include <arch/arc/v2/mpu/arc_mpu.h>
+#include <arch/arc/v2/mpu/arc_core_mpu.h>
+#include <linker/linker-defs.h>
+#include <logging/sys_log.h>
+
+
+#define AUX_MPU_RDB_VALID_MASK (0x1)
+#define AUX_MPU_EN_ENABLE   (0x40000000)
+#define AUX_MPU_EN_DISABLE  (0xBFFFFFFF)
+
+#define AUX_MPU_RDP_REGION_SIZE(bits)  \
+			(((bits - 1) & 0x3) | (((bits - 1) & 0x1C) << 7))
+
+#define AUX_MPU_RDP_ATTR_MASK (0xFFF)
+
+#define _ARC_V2_MPU_EN   (0x409)
+#define _ARC_V2_MPU_RDB0 (0x422)
+#define _ARC_V2_MPU_RDP0 (0x423)
+
+/* aux regs added in MPU version 3 */
+#define _ARC_V2_MPU_INDEX	(0x448) /* MPU index */
+#define _ARC_V2_MPU_RSTART	(0x449) /* MPU region start address */
+#define _ARC_V2_MPU_REND	(0x44A) /* MPU region end address */
+#define _ARC_V2_MPU_RPER	(0x44B) /* MPU region permission register */
+#define _ARC_V2_MPU_PROBE	(0x44C) /* MPU probe register */
+
+/* For MPU version 2, the minimum protection region size is 2048 bytes */
+/* FOr MPU version 3, the minimum protection region size is 32 bytes */
+#if CONFIG_ARC_MPU_VER == 2
+#define ARC_FEATURE_MPU_ALIGNMENT_BITS 11
+#elif CONFIG_ARC_MPU_VER == 3
+#define ARC_FEATURE_MPU_ALIGNMENT_BITS 5
+#endif
+
+#define CALC_REGION_END_ADDR(start, size) \
+		(start + size - (1 << ARC_FEATURE_MPU_ALIGNMENT_BITS))
 
-#define LOG_LEVEL CONFIG_MPU_LOG_LEVEL
-#include <zephyr/logging/log.h>
-LOG_MODULE_REGISTER(mpu);
 
 /**
  * @brief Get the number of supported MPU regions
  *
  */
-static inline uint8_t get_num_regions(void)
+static inline u8_t _get_num_regions(void)
 {
-	uint32_t num = z_arc_v2_aux_reg_read(_ARC_V2_MPU_BUILD);
+	u32_t num = _arc_v2_aux_reg_read(_ARC_V2_MPU_BUILD);
 
-	num = (num & 0xFF00U) >> 8U;
+	num = (num & 0xFF00) >> 8;
 
-	return (uint8_t)num;
+	return (u8_t)num;
 }
 
 /**
  * This internal function is utilized by the MPU driver to parse the intent
  * type (i.e. THREAD_STACK_REGION) and return the correct parameter set.
  */
-static inline uint32_t get_region_attr_by_type(uint32_t type)
+static inline u32_t _get_region_attr_by_type(u32_t type)
 {
 	switch (type) {
 	case THREAD_STACK_USER_REGION:
 		return REGION_RAM_ATTR;
 	case THREAD_STACK_REGION:
-		return AUX_MPU_ATTR_KW | AUX_MPU_ATTR_KR;
+		return  AUX_MPU_RDP_KW | AUX_MPU_RDP_KR;
 	case THREAD_APP_DATA_REGION:
 		return REGION_RAM_ATTR;
 	case THREAD_STACK_GUARD_REGION:
-		/* no Write and Execute to guard region */
-		return AUX_MPU_ATTR_UR | AUX_MPU_ATTR_KR;
+	/* no Write and Execute to guard region */
+		return AUX_MPU_RDP_UR | AUX_MPU_RDP_KR;
 	default:
-		/* unknown type */
+		/* Size 0 region */
 		return 0;
 	}
 }
 
-#if (CONFIG_ARC_MPU_VER == 4) || (CONFIG_ARC_MPU_VER == 8)
-#include "arc_mpu_v4_internal.h"
-#else
-#include "arc_mpu_common_internal.h"
+static inline void _region_init(u32_t index, u32_t region_addr, u32_t size,
+			 u32_t region_attr)
+{
+/* ARC MPU version 2 and version 3 have different aux reg interface */
+#if CONFIG_ARC_MPU_VER == 2
+	u8_t bits = find_msb_set(size) - 1;
+	index = 2 * index;
+
+	if (bits < ARC_FEATURE_MPU_ALIGNMENT_BITS) {
+		bits = ARC_FEATURE_MPU_ALIGNMENT_BITS;
+	}
+
+	if ((1 << bits) < size) {
+		bits++;
+	}
+
+	if (size > 0) {
+		region_attr |= AUX_MPU_RDP_REGION_SIZE(bits);
+		region_addr |= AUX_MPU_RDB_VALID_MASK;
+	} else {
+		region_addr = 0;
+	}
+
+	_arc_v2_aux_reg_write(_ARC_V2_MPU_RDP0 + index, region_attr);
+	_arc_v2_aux_reg_write(_ARC_V2_MPU_RDB0 + index, region_addr);
+
+#elif CONFIG_ARC_MPU_VER == 3
+#define AUX_MPU_RPER_SID1	0x10000
+	if (size < (1 << ARC_FEATURE_MPU_ALIGNMENT_BITS)) {
+		size = (1 << ARC_FEATURE_MPU_ALIGNMENT_BITS);
+	}
+
+/* all MPU regions SID are the same: 1, the default SID */
+	if (region_attr) {
+		region_attr |=  (AUX_MPU_RDB_VALID_MASK | AUX_MPU_RDP_S |
+				 AUX_MPU_RPER_SID1);
+	}
+
+	_arc_v2_aux_reg_write(_ARC_V2_MPU_INDEX, index);
+	_arc_v2_aux_reg_write(_ARC_V2_MPU_RSTART, region_addr);
+	_arc_v2_aux_reg_write(_ARC_V2_MPU_REND,
+				CALC_REGION_END_ADDR(region_addr, size));
+	_arc_v2_aux_reg_write(_ARC_V2_MPU_RPER, region_attr);
 #endif
+}
+
+#if CONFIG_ARC_MPU_VER == 3
+static inline s32_t _mpu_probe(u32_t addr)
+{
+	u32_t val;
+
+	_arc_v2_aux_reg_write(_ARC_V2_MPU_PROBE, addr);
+	val = _arc_v2_aux_reg_read(_ARC_V2_MPU_INDEX);
+
+	/* if no match or multiple regions match, return error */
+	if (val & 0xC0000000) {
+		return -1;
+	} else {
+		return val;
+	}
+}
+#endif
+
+/**
+ * This internal function is utilized by the MPU driver to parse the intent
+ * type (i.e. THREAD_STACK_REGION) and return the correct region index.
+ */
+static inline u32_t _get_region_index_by_type(u32_t type)
+{
+	/*
+	 * The new MPU regions are allocated per type after the statically
+	 * configured regions. The type is one-indexed rather than
+	 * zero-indexed.
+	 *
+	 * For ARC MPU v2, the smaller index has higher priority, so the
+	 * index is allocated in reverse order. Static regions start from
+	 * the biggest index, then thread related regions.
+	 *
+	 * For ARC MPU v3, each index has the same priority, so the index is
+	 * allocated from small to big. Static regions start from 0, then
+	 * thread related regions.
+	 */
+	switch (type) {
+#if CONFIG_ARC_MPU_VER  == 2
+	case THREAD_STACK_USER_REGION:
+		return _get_num_regions() - mpu_config.num_regions
+		 - THREAD_STACK_REGION;
+	case THREAD_STACK_REGION:
+	case THREAD_APP_DATA_REGION:
+	case THREAD_STACK_GUARD_REGION:
+		return _get_num_regions() - mpu_config.num_regions - type;
+	case THREAD_DOMAIN_PARTITION_REGION:
+#if defined(CONFIG_MPU_STACK_GUARD)
+		return _get_num_regions() - mpu_config.num_regions - type;
+#else
+		/*
+		 * Start domain partition region from stack guard region
+		 * since stack guard is not enabled.
+		 */
+		return _get_num_regions() - mpu_config.num_regions - type + 1;
+#endif
+#elif CONFIG_ARC_MPU_VER == 3
+	case THREAD_STACK_USER_REGION:
+		return mpu_config.num_regions + THREAD_STACK_REGION - 1;
+	case THREAD_STACK_REGION:
+	case THREAD_APP_DATA_REGION:
+	case THREAD_STACK_GUARD_REGION:
+		return mpu_config.num_regions + type - 1;
+	case THREAD_DOMAIN_PARTITION_REGION:
+#if defined(CONFIG_MPU_STACK_GUARD)
+		return mpu_config.num_regions + type - 1;
+#else
+		/*
+		 * Start domain partition region from stack guard region
+		 * since stack guard is not enabled.
+		 */
+		return mpu_config.num_regions + type - 2;
+#endif
+#endif
+	default:
+		__ASSERT(0, "Unsupported type");
+		return 0;
+	}
+}
+
+/**
+ * This internal function checks if region is enabled or not
+ */
+static inline int _is_enabled_region(u32_t r_index)
+{
+#if CONFIG_ARC_MPU_VER == 2
+	return ((_arc_v2_aux_reg_read(_ARC_V2_MPU_RDB0 + 2 * r_index)
+		& AUX_MPU_RDB_VALID_MASK) == AUX_MPU_RDB_VALID_MASK);
+#elif CONFIG_ARC_MPU_VER == 3
+	_arc_v2_aux_reg_write(_ARC_V2_MPU_INDEX, r_index);
+	return ((_arc_v2_aux_reg_read(_ARC_V2_MPU_RPER) &
+		 AUX_MPU_RDB_VALID_MASK) == AUX_MPU_RDB_VALID_MASK);
+#endif
+}
+
+/**
+ * This internal function check if the given buffer in in the region
+ */
+static inline int _is_in_region(u32_t r_index, u32_t start, u32_t size)
+{
+#if CONFIG_ARC_MPU_VER == 2
+	u32_t r_addr_start;
+	u32_t r_addr_end;
+	u32_t r_size_lshift;
+
+	r_addr_start = _arc_v2_aux_reg_read(_ARC_V2_MPU_RDB0 + 2 * r_index)
+			& (~AUX_MPU_RDB_VALID_MASK);
+	r_size_lshift = _arc_v2_aux_reg_read(_ARC_V2_MPU_RDP0 + 2 * r_index)
+			& AUX_MPU_RDP_ATTR_MASK;
+	r_size_lshift = (r_size_lshift & 0x3) | ((r_size_lshift >> 7) & 0x1C);
+	r_addr_end = r_addr_start  + (1 << (r_size_lshift + 1));
+
+	if (start >= r_addr_start && (start + size) < r_addr_end) {
+		return 1;
+	}
+
+#elif CONFIG_ARC_MPU_VER == 3
+
+	if ((r_index == _mpu_probe(start)) &&
+		(r_index == _mpu_probe(start + size))) {
+		return 1;
+	}
+#endif
+
+
+
+	return 0;
+}
+
+/**
+ * This internal function check if the region is user accessible or not
+ */
+static inline int _is_user_accessible_region(u32_t r_index, int write)
+{
+	u32_t r_ap;
+
+#if CONFIG_ARC_MPU_VER == 2
+	r_ap = _arc_v2_aux_reg_read(_ARC_V2_MPU_RDP0 + 2 * r_index);
+#elif CONFIG_ARC_MPU_VER == 3
+	_arc_v2_aux_reg_write(_ARC_V2_MPU_INDEX, r_index);
+	r_ap = _arc_v2_aux_reg_read(_ARC_V2_MPU_RPER);
+#endif
+	r_ap &= AUX_MPU_RDP_ATTR_MASK;
+
+	if (write) {
+		return ((r_ap & (AUX_MPU_RDP_UW | AUX_MPU_RDP_KW)) ==
+			(AUX_MPU_RDP_UW | AUX_MPU_RDP_KW));
+	}
+
+	return ((r_ap & (AUX_MPU_RDP_UR | AUX_MPU_RDP_KR)) ==
+			(AUX_MPU_RDP_UR | AUX_MPU_RDP_KR));
+}
+
+/* ARC Core MPU Driver API Implementation for ARC MPU */
+
+/**
+ * @brief enable the MPU
+ */
+void arc_core_mpu_enable(void)
+{
+#if CONFIG_ARC_MPU_VER == 2
+	/* Enable MPU */
+	_arc_v2_aux_reg_write(_ARC_V2_MPU_EN,
+		_arc_v2_aux_reg_read(_ARC_V2_MPU_EN) | AUX_MPU_EN_ENABLE);
+
+	/* MPU is always enabled, use default region to
+	 * simulate MPU enable
+	 */
+#elif CONFIG_ARC_MPU_VER == 3
+	arc_core_mpu_default(0);
+#endif
+}
+
+/**
+ * @brief disable the MPU
+ */
+void arc_core_mpu_disable(void)
+{
+#if CONFIG_ARC_MPU_VER == 2
+	/* Disable MPU */
+	_arc_v2_aux_reg_write(_ARC_V2_MPU_EN,
+		_arc_v2_aux_reg_read(_ARC_V2_MPU_EN) & AUX_MPU_EN_DISABLE);
+#elif CONFIG_ARC_MPU_VER == 3
+	/* MPU is always enabled, use default region to
+	 * simulate MPU disable
+	 */
+	arc_core_mpu_default(REGION_ALL_ATTR);
+#endif
+}
+
+/**
+ * @brief configure the base address and size for an MPU region
+ *
+ * @param   type    MPU region type
+ * @param   base    base address in RAM
+ * @param   size    size of the region
+ */
+void arc_core_mpu_configure(u8_t type, u32_t base, u32_t size)
+{
+	u32_t region_index =  _get_region_index_by_type(type);
+	u32_t region_attr = _get_region_attr_by_type(type);
+
+	SYS_LOG_DBG("Region info: 0x%x 0x%x", base, size);
+
+	if (region_attr == 0) {
+		return;
+	}
+	/*
+	 * The new MPU regions are allocated per type before
+	 * the statically configured regions.
+	 */
+#if CONFIG_ARC_MPU_VER == 2
+	/*
+	 * For ARC MPU v2, MPU regions can be overlapped, smaller
+	 * region index has higher priority.
+	 */
+	_region_init(region_index, base, size, region_attr);
+#elif CONFIG_ARC_MPU_VER == 3
+	static s32_t last_index;
+	s32_t index;
+	u32_t last_region = _get_num_regions() - 1;
+
+
+	/* use hardware probe to find the region maybe split.
+	 * another way is to look up the mpu_config.mpu_regions
+	 * in software, which is time consuming.
+	 */
+	index = _mpu_probe(base);
+
+	/* ARC MPU version 3 doesn't support region overlap.
+	 * So it can not be directly used for stack/stack guard protect
+	 * One way to do this is splitting the ram region as follow:
+	 *
+	 *  Take THREAD_STACK_GUARD_REGION as example:
+	 *  RAM region 0: the ram region before THREAD_STACK_GUARD_REGION, rw
+	 *  RAM THREAD_STACK_GUARD_REGION: RO
+	 *  RAM region 1: the region after THREAD_STACK_GUARD_REGION, same
+	 *                as region 0
+	 *  if region_index == index, it means the same thread comes back,
+	 *  no need to split
+	 */
+
+	if (index >= 0 && region_index != index) {
+		/* need to split, only 1 split is allowed */
+		/* find the correct region to mpu_config.mpu_regions */
+		if (index == last_region) {
+			/* already split */
+			index = last_index;
+		} else {
+			/* new split */
+			last_index = index;
+		}
+
+		_region_init(index,
+			mpu_config.mpu_regions[index].base,
+			base - mpu_config.mpu_regions[index].base,
+			mpu_config.mpu_regions[index].attr);
+
+#if defined(CONFIG_MPU_STACK_GUARD)
+		if (type != THREAD_STACK_USER_REGION)
+			/*
+			 * USER REGION is continuous with MPU_STACK_GUARD.
+			 * In current implementation, THREAD_STACK_GUARD_REGION is
+			 * configured before THREAD_STACK_USER_REGION
+			 */
+#endif
+			_region_init(last_region, base + size,
+				(mpu_config.mpu_regions[index].base +
+				mpu_config.mpu_regions[index].size - base - size),
+				mpu_config.mpu_regions[index].attr);
+	}
+
+	_region_init(region_index, base, size, region_attr);
+#endif
+}
+
+/**
+ * @brief configure the default region
+ *
+ * @param   region_attr region attribute of default region
+ */
+void arc_core_mpu_default(u32_t region_attr)
+{
+	u32_t val =  _arc_v2_aux_reg_read(_ARC_V2_MPU_EN) &
+			(~AUX_MPU_RDP_ATTR_MASK);
+
+	region_attr &= AUX_MPU_RDP_ATTR_MASK;
+
+	_arc_v2_aux_reg_write(_ARC_V2_MPU_EN, region_attr | val);
+}
+
+/**
+ * @brief configure the MPU region
+ *
+ * @param   index   MPU region index
+ * @param   base    base address
+ * @param   region_attr region attribute
+ */
+void arc_core_mpu_region(u32_t index, u32_t base, u32_t size,
+			u32_t region_attr)
+{
+	if (index >= _get_num_regions()) {
+		return;
+	}
+
+	region_attr &= AUX_MPU_RDP_ATTR_MASK;
+
+	_region_init(index, base, size, region_attr);
+}
+
+#if defined(CONFIG_USERSPACE)
+void arc_core_mpu_configure_user_context(struct k_thread *thread)
+{
+	u32_t base = (u32_t)thread->stack_obj;
+	u32_t size = thread->stack_info.size;
+
+	/* for kernel threads, no need to configure user context */
+	if (!thread->arch.priv_stack_start) {
+		return;
+	}
+
+	arc_core_mpu_configure(THREAD_STACK_USER_REGION, base, size);
+
+	/* configure app data portion */
+#ifdef CONFIG_APPLICATION_MEMORY
+#if CONFIG_ARC_MPU_VER == 2
+	/*
+	 * _app_ram_size is guaranteed to be power of two, and
+	 * _app_ram_start is guaranteed to be aligned _app_ram_size
+	 * in linker template
+	 */
+	base = (u32_t)&__app_ram_start;
+	size = (u32_t)&__app_ram_size;
+
+	/* set up app data region if exists, otherwise disable */
+	if (size > 0) {
+		arc_core_mpu_configure(THREAD_APP_DATA_REGION, base, size);
+	}
+#elif CONFIG_ARC_MPU_VER == 3
+	/*
+	 * ARC MPV v3 doesn't support MPU region overlap.
+	 * Application memory should be a static memory, defined in mpu_config
+	 */
+#endif
+#endif
+}
+
+/**
+ * @brief configure MPU regions for the memory partitions of the memory domain
+ *
+ * @param   mem_domain    memory domain that thread belongs to
+ */
+void arc_core_mpu_configure_mem_domain(struct k_mem_domain *mem_domain)
+{
+	s32_t region_index =
+		_get_region_index_by_type(THREAD_DOMAIN_PARTITION_REGION);
+	u32_t num_partitions;
+	struct k_mem_partition *pparts;
+
+	if (mem_domain) {
+		SYS_LOG_DBG("configure domain: %p", mem_domain);
+		num_partitions = mem_domain->num_partitions;
+		pparts = mem_domain->partitions;
+	} else {
+		SYS_LOG_DBG("disable domain partition regions");
+		num_partitions = 0;
+		pparts = NULL;
+	}
+#if CONFIG_ARC_MPU_VER == 2
+	for (; region_index >= 0; region_index--) {
+#elif CONFIG_ARC_MPU_VER == 3
+/*
+ * Note: For ARC MPU v3, overlapping is not allowed, so the following
+ * partitions/region may be overlapped with each other or regions in
+ * mpu_config. This will cause EV_MachineCheck exception (ECR = 0x030600).
+ * Although split mechanism is used for stack guard region to avoid this,
+ * it doesn't work for memory domain, because the dynamic region numbers.
+ * So be careful to avoid the overlap situation.
+ */
+	for (; region_index <  _get_num_regions() - 1; region_index++) {
+#endif
+		if (num_partitions && pparts->size) {
+			SYS_LOG_DBG("set region 0x%x 0x%x 0x%x",
+				    region_index, pparts->start, pparts->size);
+			_region_init(region_index, pparts->start, pparts->size,
+					pparts->attr);
+			num_partitions--;
+		} else {
+			SYS_LOG_DBG("disable region 0x%x", region_index);
+			/* Disable region */
+			_region_init(region_index, 0, 0, 0);
+		}
+		pparts++;
+	}
+}
+
+/**
+ * @brief configure MPU region for a single memory partition
+ *
+ * @param   part_index  memory partition index
+ * @param   part        memory partition info
+ */
+void arc_core_mpu_configure_mem_partition(u32_t part_index,
+					  struct k_mem_partition *part)
+{
+	u32_t region_index =
+		_get_region_index_by_type(THREAD_DOMAIN_PARTITION_REGION);
+
+	SYS_LOG_DBG("configure partition index: %u", part_index);
+
+	if (part) {
+		SYS_LOG_DBG("set region 0x%x 0x%x 0x%x",
+			    region_index + part_index, part->start, part->size);
+		_region_init(region_index, part->start, part->size,
+				part->attr);
+	} else {
+		SYS_LOG_DBG("disable region 0x%x", region_index + part_index);
+		/* Disable region */
+		_region_init(region_index + part_index, 0, 0, 0);
+	}
+}
+
+/**
+ * @brief Reset MPU region for a single memory partition
+ *
+ * @param   part_index  memory partition index
+ */
+void arc_core_mpu_mem_partition_remove(u32_t part_index)
+{
+	u32_t region_index =
+		_get_region_index_by_type(THREAD_DOMAIN_PARTITION_REGION);
+
+	SYS_LOG_DBG("disable region 0x%x", region_index + part_index);
+	/* Disable region */
+	_region_init(region_index + part_index, 0, 0, 0);
+}
+
+/**
+ * @brief get the maximum number of free regions for memory domain partitions
+ */
+int arc_core_mpu_get_max_domain_partition_regions(void)
+{
+#if CONFIG_ARC_MPU_VER == 2
+	return _get_region_index_by_type(THREAD_DOMAIN_PARTITION_REGION) + 1;
+#elif CONFIG_ARC_MPU_VER == 3
+	/*
+	 * Subtract the start of domain partition regions and 1 reserved region
+	 * from total regions will get the maximum number of free regions for
+	 * memory domain partitions.
+	 */
+	return _get_num_regions() -
+		_get_region_index_by_type(THREAD_DOMAIN_PARTITION_REGION) - 1;
+#endif
+}
+
+/**
+ * @brief validate the given buffer is user accessible or not
+ */
+int arc_core_mpu_buffer_validate(void *addr, size_t size, int write)
+{
+	s32_t r_index;
+
+
+	/*
+	 * For ARC MPU v2, smaller region number takes priority.
+	 * we can stop the iteration immediately once we find the
+	 * matched region that grants permission or denies access.
+	 *
+	 * For ARC MPU v3, overlapping is not supported.
+	 * we can stop the iteration immediately once we find the
+	 * matched region that grants permission or denies access.
+	 */
+#if CONFIG_ARC_MPU_VER == 2
+	for (r_index = 0; r_index < _get_num_regions(); r_index++) {
+		if (!_is_enabled_region(r_index) ||
+		    !_is_in_region(r_index, (u32_t)addr, size)) {
+			continue;
+		}
+
+		if (_is_user_accessible_region(r_index, write)) {
+			return 0;
+		} else {
+			return -EPERM;
+		}
+	}
+#elif CONFIG_ARC_MPU_VER == 3
+	r_index = _mpu_probe((u32_t)addr);
+	/*  match and the area is in one region */
+	if (r_index >= 0 && r_index == _mpu_probe((u32_t)addr + size)) {
+		if (_is_user_accessible_region(r_index, write)) {
+			return 0;
+		} else {
+			return -EPERM;
+		}
+	}
+#endif
+
+	return -EPERM;
+}
+#endif /* CONFIG_USERSPACE */
+
+/* ARC MPU Driver Initial Setup */
+
+/*
+ * @brief MPU default configuration
+ *
+ * This function provides the default configuration mechanism for the Memory
+ * Protection Unit (MPU).
+ */
+static void _arc_mpu_config(void)
+{
+	u32_t num_regions;
+	u32_t i;
+
+	num_regions = _get_num_regions();
+
+	/* ARC MPU supports up to 16 Regions */
+	if (mpu_config.num_regions > num_regions) {
+		return;
+	}
+
+	/* Disable MPU */
+	arc_core_mpu_disable();
+
+#if CONFIG_ARC_MPU_VER == 2
+	u32_t r_index;
+	/*
+	 * the MPU regions are filled in the reverse order.
+	 * According to ARCv2 ISA, the MPU region with smaller
+	 * index has higher priority. The static background MPU
+	 * regions in mpu_config will be in the bottom. Then
+	 * the special type regions will be above.
+	 *
+	 */
+	r_index = num_regions - mpu_config.num_regions;
+
+	/* clear all the regions first */
+	for (i = 0; i < r_index; i++) {
+		_region_init(i, 0, 0, 0);
+	}
+
+	/* configure the static regions */
+	for (i = 0; i < mpu_config.num_regions; i++) {
+		_region_init(r_index,
+			mpu_config.mpu_regions[i].base,
+			mpu_config.mpu_regions[i].size,
+			mpu_config.mpu_regions[i].attr);
+		r_index++;
+	}
+
+	/* default region: no read, write and execute */
+	arc_core_mpu_default(0);
+
+#elif CONFIG_ARC_MPU_VER == 3
+	for (i = 0; i < mpu_config.num_regions; i++) {
+		_region_init(i,
+			mpu_config.mpu_regions[i].base,
+			mpu_config.mpu_regions[i].size,
+			mpu_config.mpu_regions[i].attr);
+	}
+
+	for (; i < num_regions; i++) {
+		_region_init(i, 0, 0, 0);
+	}
+#endif
+	/* Enable MPU */
+	arc_core_mpu_enable();
+}
+
+static int arc_mpu_init(struct device *arg)
+{
+	ARG_UNUSED(arg);
+
+	_arc_mpu_config();
+
+	return 0;
+}
+
+SYS_INIT(arc_mpu_init, PRE_KERNEL_1,
+	 CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);