From fddcf70d57d0b941ec40877c3e142eefb81e02cf Mon Sep 17 00:00:00 2001
From: Jamie McCrae <jamie.mccrae@nordicsemi.no>
Date: Fri, 9 Jan 2026 09:57:10 +0000
Subject: [PATCH] snippets: Add slot1-partition snippet

Adds a snippet which sets the chosen code partition to
slot1_partition, which can be used with things like MCUboot

Signed-off-by: Jamie McCrae <jamie.mccrae@nordicsemi.no>
---
 snippets/slot1-partition/README.rst           | 24 +++++++++++++++++++
 .../slot1-partition/slot1-partition.overlay   |  5 ++++
 snippets/slot1-partition/snippet.yml          |  3 +++
 3 files changed, 32 insertions(+)
 create mode 100644 snippets/slot1-partition/README.rst
 create mode 100644 snippets/slot1-partition/slot1-partition.overlay
 create mode 100644 snippets/slot1-partition/snippet.yml

diff --git a/snippets/slot1-partition/README.rst b/snippets/slot1-partition/README.rst
new file mode 100644
index 00000000000..89cee1172c5
--- /dev/null
+++ b/snippets/slot1-partition/README.rst
@@ -0,0 +1,24 @@
+.. _snippet-slot1-partition:
+
+Slot1 partition snippet (slot1-partition)
+#########################################
+
+.. code-block:: console
+
+   west build -S slot1-partition [...]
+
+Overview
+********
+
+This snippet changes the chosen flash partition to be the ``slot1_partition`` node, this can be
+used to build for the alternate slot in MCUboot direct-xip or firmware loader modes.
+
+Requirements
+************
+
+Partition mapping correct setup in devicetree, for example:
+
+.. literalinclude:: ../../dts/vendor/nordic/nrf52840_partition.dtsi
+   :language: dts
+   :dedent:
+   :lines: 15-
diff --git a/snippets/slot1-partition/slot1-partition.overlay b/snippets/slot1-partition/slot1-partition.overlay
new file mode 100644
index 00000000000..eba132c978b
--- /dev/null
+++ b/snippets/slot1-partition/slot1-partition.overlay
@@ -0,0 +1,5 @@
+/ {
+	chosen {
+		zephyr,code-partition = &slot1_partition;
+	};
+};
diff --git a/snippets/slot1-partition/snippet.yml b/snippets/slot1-partition/snippet.yml
new file mode 100644
index 00000000000..1be2b7d1d5d
--- /dev/null
+++ b/snippets/slot1-partition/snippet.yml
@@ -0,0 +1,3 @@
+name: slot1-partition
+append:
+  EXTRA_DTC_OVERLAY_FILE: slot1-partition.overlay