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cmake: linker: arm: memory regions from devicetree added

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This commit add devicetree memory regions added to arm/linker.cmake.

The following memory regions are now added to the generated linker
script and scatter file if they exists in the devicetree.
- chosen:    zephyr,itcm
- chosen:    zephyr,dtcm
- nodelabel: ti_ccfg_partition
- nodelabel: sram1
- nodelabel: sram2
- nodelabel: sram3
- nodelabel: sram4
- nodelabel: sdram1
- nodelabel: sdram2
- nodelabel: backup_sram

Also support for the itcm and dtcm section and their placement in
corresponding memory regions has been added.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
This commit is contained in:
Torsten Rasmussen 2021-08-11 17:02:22 +02:00 • committed by Anas Nashif
commit 450b9fa9bc
1 changed files with 37 additions and 0 deletions
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37
cmake/linker_script/arm/linker.cmake
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@ -34,6 +34,21 @@ zephyr_linker_memory(NAME FLASH FLAGS rx START ${FLASH_ADDR} SIZE ${FLASH_SIZ
zephyr_linker_memory(NAME RAM FLAGS wx START ${RAM_ADDR} SIZE ${RAM_SIZE})
zephyr_linker_memory(NAME IDT_LIST FLAGS wx START ${IDT_ADDR} SIZE 2K)
# TI CCFG Registers
zephyr_linker_dts_memory(NAME FLASH_CCFG FLAGS rwx NODELABEL ti_ccfg_partition)
# Data & Instruction Tightly Coupled Memory
zephyr_linker_dts_memory(NAME ITCM FLAGS rw CHOSEN "zephyr,itcm")
zephyr_linker_dts_memory(NAME DTCM FLAGS rw CHOSEN "zephyr,dtcm")
zephyr_linker_dts_memory(NAME SRAM1 FLAGS rw NODELABEL sram1)
zephyr_linker_dts_memory(NAME SRAM2 FLAGS rw NODELABEL sram2)
zephyr_linker_dts_memory(NAME SRAM3 FLAGS rw NODELABEL sram3)
zephyr_linker_dts_memory(NAME SRAM4 FLAGS rw NODELABEL sram4)
zephyr_linker_dts_memory(NAME SDRAM1 FLAGS rw NODELABEL sdram1)
zephyr_linker_dts_memory(NAME SDRAM2 FLAGS rw NODELABEL sdram2)
zephyr_linker_dts_memory(NAME BACKUP_SRAM FLAGS rw NODELABEL backup_sram)
if(CONFIG_XIP)
zephyr_linker_group(NAME ROM_REGION LMA FLASH)
set(rom_start ${FLASH_ADDR})
@ -157,6 +172,28 @@ zephyr_linker_section_configure(
PRIO 50
)
dt_chosen(chosen_itcm PROPERTY "zephyr,itcm")
if(DEFINED chosen_itcm)
dt_node_has_status(status_result PATH ${chosen_itcm} STATUS okay)
if(${status_result})
zephyr_linker_group(NAME ITCM_REGION VMA ITCM LMA ROM_REGION)
zephyr_linker_section(NAME .itcm GROUP ITCM_REGION SUBALIGN 4)
endif()
endif()
dt_chosen(chosen_dtcm PROPERTY "zephyr,dtcm")
if(DEFINED chosen_dtcm)
dt_node_has_status(status_result PATH ${chosen_dtcm} STATUS okay)
if(${status_result})
zephyr_linker_group(NAME DTCM_REGION VMA DTCM LMA ROM_REGION)
zephyr_linker_section(NAME .dtcm_bss GROUP DTCM_REGION SUBALIGN 4 TYPE BSS)
zephyr_linker_section(NAME .dtcm_noinit GROUP DTCM_REGION SUBALIGN 4 TYPE NOLOAD NOINIT)
zephyr_linker_section(NAME .dtcm_data GROUP DTCM_REGION SUBALIGN 4)
endif()
endif()
zephyr_linker_section(NAME .ARM.attributes ADDRESS 0 NOINPUT)
zephyr_linker_section_configure(SECTION .ARM.attributes INPUT ".ARM.attributes" KEEP)
zephyr_linker_section_configure(SECTION .ARM.attributes INPUT ".gnu.attributes" KEEP)