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arm64: versal: Fix LTO for mini_ospi/mini_qspi

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With LTO enabled, mini U-Boot was hanging during reloc_fdt().
The initial stack pointer was placed too low, and the FDT memcpy
destination was carved only 4KB above it. This left insufficient
margin, causing the FDT copy to overwrite the live early stack
and corrupt execution before relocation.

To fix this, increase the malloc heap from 8KB to 12KB and raise the
initial stack pointer by 4KB. Together these adjustments increase
the separation between the early stack and the FDT region during
the pre-relocation phase, eliminating the overlap and fixing the
hang on mini builds (QSPI/OSPI).

Signed-off-by: Pranav Tilak <pranav.vinaytilak@amd.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
This commit is contained in:
Pranav Tilak
2025-12-08 14:54:24 +01:00
committed by Tom Rini
parent ae184121e0
commit f2c148e0df
2 changed files with 4 additions and 4 deletions
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4
configs/xilinx_versal_mini_ospi_defconfig
View File

@@ -3,11 +3,11 @@ CONFIG_SYS_CONFIG_NAME="xilinx_versal_mini"
CONFIG_COUNTER_FREQUENCY=100000000
CONFIG_ARCH_VERSAL=y
CONFIG_TEXT_BASE=0xFFFC0000
CONFIG_SYS_MALLOC_LEN=0x2000
CONFIG_SYS_MALLOC_LEN=0x3000
CONFIG_SYS_MALLOC_F_LEN=0x500
CONFIG_NR_DRAM_BANKS=1
CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0xFFFE1000
CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0xFFFE2000
CONFIG_SF_DEFAULT_SPEED=30000000
CONFIG_ENV_SIZE=0x80
# CONFIG_DM_GPIO is not set

4
configs/xilinx_versal_mini_qspi_defconfig
View File

@@ -3,10 +3,10 @@ CONFIG_SYS_CONFIG_NAME="xilinx_versal_mini"
CONFIG_COUNTER_FREQUENCY=100000000
CONFIG_ARCH_VERSAL=y
CONFIG_TEXT_BASE=0xFFFC0000
CONFIG_SYS_MALLOC_LEN=0x2000
CONFIG_SYS_MALLOC_LEN=0x3000
CONFIG_NR_DRAM_BANKS=1
CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0xFFFE0000
CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0xFFFE2000
CONFIG_SF_DEFAULT_SPEED=30000000
CONFIG_ENV_SIZE=0x80
CONFIG_DEFAULT_DEVICE_TREE="versal-mini-qspi-single"