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cmake: dts: import devicetree symbols into CMake #37624

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Aug 26, 2021
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cmake: dts: import devicetree symbols into CMake #37624

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19 changes: 19 additions & 0 deletions cmake/dts.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,10 @@ set(DTS_POST_CPP ${PROJECT_BINARY_DIR}/${BOARD}.dts.pre.tmp)
# This is relative to each element of DTS_ROOT.
set(VENDOR_PREFIXES dts/bindings/vendor-prefixes.txt)

# Devicetree in CMake.
set(DTS_CMAKE_SCRIPT ${ZEPHYR_BASE}/scripts/dts/gen_dts_cmake.py)
set(DTS_CMAKE ${PROJECT_BINARY_DIR}/dts.cmake)

set_ifndef(DTS_SOURCE ${BOARD_DIR}/${BOARD}.dts)

zephyr_file(APPLICATION_ROOT DTS_ROOT)
Expand Down Expand Up @@ -175,6 +179,7 @@ if(SUPPORTS_DTS)
CMAKE_CONFIGURE_DEPENDS
${include_files}
${GEN_DEFINES_SCRIPT}
${DTS_CMAKE_SCRIPT}
)

#
Expand Down Expand Up @@ -250,6 +255,20 @@ if(SUPPORTS_DTS)
message(STATUS "Generated device_extern.h: ${DEVICE_EXTERN_H}")
endif()

execute_process(
COMMAND ${PYTHON_EXECUTABLE} ${DTS_CMAKE_SCRIPT}
--edt-pickle ${EDT_PICKLE}
--cmake-out ${DTS_CMAKE}
WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
RESULT_VARIABLE ret
)
if(NOT "${ret}" STREQUAL "0")
message(FATAL_ERROR "gen_dts_cmake.py failed with return code: ${ret}")
else()
message(STATUS "Including generated dts.cmake file: ${DTS_CMAKE}")
include(${DTS_CMAKE})
endif()

else()
file(WRITE ${DEVICETREE_UNFIXED_H} "/* WARNING. THIS FILE IS AUTO-GENERATED. DO NOT MODIFY! */")
file(WRITE ${DEVICE_EXTERN_H} "/* WARNING. THIS FILE IS AUTO-GENERATED. DO NOT MODIFY! */")
Expand Down
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