ef912810d3
Move the dts files into the board dir so that board ports can be more standalone. This will allow us at some point to have board ports outside of the tree. Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
130 lines
4.4 KiB
CMake
130 lines
4.4 KiB
CMake
# Zephyr code can configure itself based on a KConfig'uration with the
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# header file autoconf.h. There exists an analogous file
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# generated_dts_board.h that allows configuration based on information
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# encoded in DTS.
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#
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# Here we call on dtc, the gcc preprocessor, and
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# scripts/dts/extract_dts_includes.py to generate this header file at
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# CMake configure-time.
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#
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# See ~/zephyr/doc/dts
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set(GENERATED_DTS_BOARD_H ${PROJECT_BINARY_DIR}/include/generated/generated_dts_board.h)
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set(GENERATED_DTS_BOARD_CONF ${PROJECT_BINARY_DIR}/include/generated/generated_dts_board.conf)
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set_ifndef(DTS_SOURCE ${PROJECT_SOURCE_DIR}/boards/${ARCH}/${BOARD_FAMILY}/${BOARD_FAMILY}.dts)
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message(STATUS "Generating zephyr/include/generated/generated_dts_board.h")
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if(CONFIG_HAS_DTS)
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set(DTC_INCLUDE_FLAG_FOR_SOURCE
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-include ${DTS_SOURCE}
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)
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if(NOT DTC_OVERLAY_FILE)
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# overlay file is not set, so try to use overlay dir instead.
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set_ifndef(DTC_OVERLAY_DIR ${APPLICATION_SOURCE_DIR})
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set(DTC_OVERLAY_FILE ${DTC_OVERLAY_DIR}/${BOARD_FAMILY}.overlay)
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endif()
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if(EXISTS ${DTC_OVERLAY_FILE})
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set(DTC_INCLUDE_FLAG_FOR_OVERLAY
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-include ${DTC_OVERLAY_FILE}
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)
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else()
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unset(DTC_INCLUDE_FLAG_FOR_OVERLAY)
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endif()
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# TODO: Cut down on CMake configuration time by avoiding
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# regeneration of generated_dts_board.h on every configure. How
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# challenging is this? What are the dts dependencies? We run the
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# preprocessor, and it seems to be including all kinds of
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# directories with who-knows how many header files.
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# Run the C preprocessor on an empty C source file that has one or
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# more DTS source files -include'd into it to create the
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# intermediary file *.dts.pre.tmp
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execute_process(
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COMMAND ${CMAKE_C_COMPILER}
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-x assembler-with-cpp
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-nostdinc
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-I${PROJECT_SOURCE_DIR}/arch/${ARCH}/soc
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-isystem ${PROJECT_SOURCE_DIR}/include
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-isystem ${PROJECT_SOURCE_DIR}/dts/${ARCH}
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-isystem ${PROJECT_SOURCE_DIR}/dts
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-include ${AUTOCONF_H}
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${DTC_INCLUDE_FLAG_FOR_SOURCE} # include the DTS source
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${DTC_INCLUDE_FLAG_FOR_OVERLAY} # Possibly include an overlay after the source
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-I${PROJECT_SOURCE_DIR}/dts/common
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-I${PROJECT_SOURCE_DIR}/drivers
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-undef -D__DTS__
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-P
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-E $ENV{ZEPHYR_BASE}/misc/empty_file.c
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-o ${BOARD_FAMILY}.dts.pre.tmp
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WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
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RESULT_VARIABLE ret
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)
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if(NOT "${ret}" STREQUAL "0")
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message(FATAL_ERROR "command failed with return code: ${ret}")
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endif()
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# Run the DTC on *.dts.pre.tmp to create the intermediary file *.dts_compiled
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execute_process(
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COMMAND ${DTC}
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-O dts
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-o ${BOARD_FAMILY}.dts_compiled
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-b 0
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${BOARD_FAMILY}.dts.pre.tmp
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WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
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RESULT_VARIABLE ret
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)
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if(NOT "${ret}" STREQUAL "0")
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message(FATAL_ERROR "command failed with return code: ${ret}")
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endif()
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# Run extract_dts_includes.py for the header file
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# generated_dts_board.h
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set_ifndef(DTS_BOARD_FIXUP_FILE ${PROJECT_SOURCE_DIR}/boards/${ARCH}/${BOARD_FAMILY}/dts.fixup)
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if(EXISTS ${DTS_BOARD_FIXUP_FILE})
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set(DTS_BOARD_FIXUP -f ${DTS_BOARD_FIXUP_FILE})
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endif()
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set(CMD_EXTRACT_DTS_INCLUDES ${PYTHON_EXECUTABLE} ${PROJECT_SOURCE_DIR}/scripts/dts/extract_dts_includes.py
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--dts ${BOARD_FAMILY}.dts_compiled
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--yaml ${PROJECT_SOURCE_DIR}/dts/bindings
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${DTS_BOARD_FIXUP}
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)
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execute_process(
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COMMAND ${CMD_EXTRACT_DTS_INCLUDES}
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OUTPUT_VARIABLE STDOUT
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WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
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RESULT_VARIABLE ret
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)
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if(NOT "${ret}" STREQUAL "0")
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message(FATAL_ERROR "command failed with return code: ${ret}")
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endif()
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# extract_dts_includes.py writes the header file contents to stdout,
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# which we capture in the variable STDOUT and then finaly write into
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# the header file.
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file(WRITE ${GENERATED_DTS_BOARD_H} "${STDOUT}" )
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# Run extract_dts_includes.py to create a .conf file that can be
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# included into the CMake namespace
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execute_process(
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COMMAND ${CMD_EXTRACT_DTS_INCLUDES} --keyvalue
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OUTPUT_VARIABLE STDOUT
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WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
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RESULT_VARIABLE ret
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)
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if(NOT "${ret}" STREQUAL "0")
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message(FATAL_ERROR "command failed with return code: ${ret}")
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endif()
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file(WRITE ${GENERATED_DTS_BOARD_CONF} "${STDOUT}" )
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import_kconfig(${GENERATED_DTS_BOARD_CONF})
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else()
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file(WRITE ${GENERATED_DTS_BOARD_H} "/* WARNING. THIS FILE IS AUTO-GENERATED. DO NOT MODIFY! */")
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endif()
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