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cmake: linker: arm: put RAM sections in RAM region

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Cleanup RAM layout so that the RAM_REGION is now in the RAM memory
region.  Put .bss in RAM_REGION.

This means we have a proper program header for the RAM region.

As part of this extend zephyr_linker_symbol to allow it to take
an OBJECT paramater to specify the region to associate a symbol to.

Signed-off-by: Kumar Gala <kumar.gala@intel.com>
This commit is contained in:
Kumar Gala 2023-04-28 09:44:59 -05:00 • committed by Stephanos Ioannidis
commit f5eada5553
2 changed files with 8 additions and 8 deletions
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14
cmake/linker_script/arm/linker.cmake
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@ -49,7 +49,7 @@ else()
set(rom_start ${RAM_ADDR})
endif()
zephyr_linker_group(NAME RAM_REGION VMA RAM LMA ROM_REGION)
zephyr_linker_group(NAME RAM_REGION VMA RAM LMA RAM)
zephyr_linker_group(NAME TEXT_REGION GROUP ROM_REGION SYMBOL SECTION)
zephyr_linker_group(NAME RODATA_REGION GROUP ROM_REGION)
zephyr_linker_group(NAME DATA_REGION GROUP RAM_REGION SYMBOL SECTION)
@ -122,7 +122,7 @@ include(${COMMON_ZEPHYR_LINKER_DIR}/common-ram.cmake)
#include(kobject.ld)
if(NOT CONFIG_USERSPACE)
zephyr_linker_section(NAME .bss VMA RAM LMA FLASH TYPE BSS)
zephyr_linker_section(NAME .bss VMA RAM LMA RAM_REGION TYPE BSS)
zephyr_linker_section_configure(SECTION .bss INPUT COMMON)
zephyr_linker_section_configure(SECTION .bss INPUT ".kernel_bss.*")
# As memory is cleared in words only, it is simpler to ensure the BSS
@ -135,11 +135,11 @@ if(NOT CONFIG_USERSPACE)
zephyr_linker_section_configure(SECTION .noinit INPUT ".kernel_noinit.*")
endif()
zephyr_linker_symbol(SYMBOL __kernel_ram_start EXPR "(@__bss_start@)")
zephyr_linker_symbol(SYMBOL __kernel_ram_end EXPR "(${RAM_ADDR} + ${RAM_SIZE})")
zephyr_linker_symbol(SYMBOL __kernel_ram_size EXPR "(@__kernel_ram_end@ - @__bss_start@)")
zephyr_linker_symbol(SYMBOL _image_ram_start EXPR "(${RAM_ADDR})" SUBALIGN 32) # ToDo calculate 32 correctly
zephyr_linker_symbol(SYMBOL ARM_LIB_STACKHEAP EXPR "(${RAM_ADDR} + ${RAM_SIZE})" SIZE -0x1000)
zephyr_linker_symbol(OBJECT REGION_RAM SYMBOL __kernel_ram_start EXPR "(@__bss_start@)")
zephyr_linker_symbol(OBJECT REGION_RAM SYMBOL __kernel_ram_end EXPR "(${RAM_ADDR} + ${RAM_SIZE})")
zephyr_linker_symbol(OBJECT REGION_RAM SYMBOL __kernel_ram_size EXPR "(@__kernel_ram_end@ - @__bss_start@)")
zephyr_linker_symbol(OBJECT REGION_RAM SYMBOL _image_ram_start EXPR "(${RAM_ADDR})" SUBALIGN 32) # ToDo calculate 32 correctly
zephyr_linker_symbol(OBJECT REGION_RAM SYMBOL ARM_LIB_STACKHEAP EXPR "(${RAM_ADDR} + ${RAM_SIZE})" SIZE -0x1000)
set(VECTOR_ALIGN 4)
if(CONFIG_CPU_CORTEX_M_HAS_VTOR)