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[Backport v3.7-branch] arch: common: fix copy for ramfunc region during XIP init + related fixup commit #92848

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Merged
merged 2 commits into from
Jul 20, 2025
Merged

[Backport v3.7-branch] arch: common: fix copy for ramfunc region during XIP init + related fixup commit #92848

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0e3192e
arch: common: fix copy for ramfunc region during XIP init
danieldegrasse Nov 1, 2024
c8bbc52
cmake: arm: linker: remove usage of ld-specific ADDR() function
danieldegrasse Apr 14, 2025
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1 change: 1 addition & 0 deletions arch/common/ramfunc.ld
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,7 @@

SECTION_DATA_PROLOGUE(.ramfunc,,)
{
__ramfunc_region_start = .;
MPU_ALIGN(__ramfunc_size);
__ramfunc_start = .;
*(.ramfunc)
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1 change: 1 addition & 0 deletions cmake/linker_script/arm/linker.cmake
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Expand Up @@ -144,6 +144,7 @@ endif()

include(${COMMON_ZEPHYR_LINKER_DIR}/ram-end.cmake)

zephyr_linker_symbol(SYMBOL __ramfunc_region_start EXPR "(@__ramfunc_start@)")
zephyr_linker_symbol(SYMBOL __kernel_ram_start EXPR "(@__bss_start@)")
zephyr_linker_symbol(SYMBOL __kernel_ram_end EXPR "(${RAM_ADDR} + ${RAM_SIZE})")
zephyr_linker_symbol(SYMBOL __kernel_ram_size EXPR "(@__kernel_ram_end@ - @__bss_start@)")
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1 change: 1 addition & 0 deletions include/zephyr/linker/linker-defs.h
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Expand Up @@ -230,6 +230,7 @@ extern char _nocache_ram_size[];
* section, stored in RAM instead of FLASH.
*/
#ifdef CONFIG_ARCH_HAS_RAMFUNC_SUPPORT
extern char __ramfunc_region_start[];
extern char __ramfunc_start[];
extern char __ramfunc_end[];
extern char __ramfunc_size[];
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4 changes: 2 additions & 2 deletions kernel/xip.c
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Expand Up @@ -28,8 +28,8 @@ void z_data_copy(void)
z_early_memcpy(&__data_region_start, &__data_region_load_start,
__data_region_end - __data_region_start);
#ifdef CONFIG_ARCH_HAS_RAMFUNC_SUPPORT
z_early_memcpy(&__ramfunc_start, &__ramfunc_load_start,
(uintptr_t) &__ramfunc_size);
z_early_memcpy(&__ramfunc_region_start, &__ramfunc_load_start,
__ramfunc_end - __ramfunc_region_start);
#endif /* CONFIG_ARCH_HAS_RAMFUNC_SUPPORT */
#if DT_NODE_HAS_STATUS(DT_CHOSEN(zephyr_ccm), okay)
z_early_memcpy(&__ccm_data_start, &__ccm_data_rom_start,
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