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linker: Create sections from zephyr,memory-region nodes

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Currently when a node has a 'zephyr,memory-region' compatible and a
'zephyr,memory-region' string property, a new memory region is created
in the linker script.

Having a memory region without a section to place variables in could be
not that useful. With this patch we extend the memory-region mechanism
to also create sections.

The user can then place variables in the sections as usual by using for
example the GCC attributes.

Signed-off-by: Carlo Caione <ccaione@baylibre.com>
This commit is contained in:
Carlo Caione 2022-03-09 17:19:03 +01:00 • committed by Anas Nashif
commit bc72fb67b1
6 changed files with 92 additions and 0 deletions
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5
cmake/linker_script/arm/linker.cmake
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@ -195,3 +195,8 @@ zephyr_linker_section_configure(SECTION .data ANY FLAGS "+RW")
zephyr_linker_section_configure(SECTION .bss ANY FLAGS "+ZI")
include(${COMMON_ZEPHYR_LINKER_DIR}/debug-sections.cmake)
dt_comp_path(paths COMPATIBLE "zephyr,memory-region")
foreach(path IN LISTS paths)
zephyr_linker_dts_section(PATH ${path})
endforeach()