72 lines
2.4 KiB
CMake
72 lines
2.4 KiB
CMake
# SPDX-License-Identifier: Apache-2.0
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#
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# Copyright (c) 2021, Nordic Semiconductor ASA
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# Configure SoC settings based on Kconfig settings and SoC root.
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#
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# This CMake module will set the following variables in the build system based
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# on Kconfig settings and selected SoC.
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#
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# If no implementation is available for the selected SoC an error will be raised.
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#
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# Outcome:
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# The following variables will be defined when this CMake module completes:
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#
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# - SOC_NAME: Name of the SoC in use, identical to CONFIG_SOC
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# - SOC_SERIES: Name of the SoC series in use, identical to CONFIG_SOC_SERIES
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# - SOC_FAMILY: Name of the SoC family, identical to CONFIG_SOC_FAMILY
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# - SOC_PATH: Path fragment defined by either SOC_NAME or SOC_FAMILY/SOC_SERIES.
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# - SOC_DIR: Directory containing the SoC implementation
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# - SOC_ROOT: SOC_ROOT with ZEPHYR_BASE appended
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#
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# Variable dependencies:
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# - SOC_ROOT: CMake list of SoC roots containing SoC implementations
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#
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# Variables set by this module and not mentioned above are considered internal
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# use only and may be removed, renamed, or re-purposed without prior notice.
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include_guard(GLOBAL)
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include(kconfig)
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# 'SOC_ROOT' is a prioritized list of directories where socs may be
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# found. It always includes ${ZEPHYR_BASE}/soc at the lowest priority.
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list(APPEND SOC_ROOT ${ZEPHYR_BASE})
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set(SOC_NAME ${CONFIG_SOC})
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set(SOC_SERIES ${CONFIG_SOC_SERIES})
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set(SOC_TOOLCHAIN_NAME ${CONFIG_SOC_TOOLCHAIN_NAME})
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set(SOC_FAMILY ${CONFIG_SOC_FAMILY})
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if("${SOC_SERIES}" STREQUAL "")
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set(SOC_PATH ${SOC_NAME})
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else()
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set(SOC_PATH ${SOC_FAMILY}/${SOC_SERIES})
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endif()
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# Use SOC to search for a 'CMakeLists.txt' file.
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# e.g. zephyr/soc/xtensa/intel_adsp/CMakeLists.txt.
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foreach(root ${SOC_ROOT})
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# Check that the root looks reasonable.
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if(NOT IS_DIRECTORY "${root}/soc")
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message(WARNING "\nSOC_ROOT element(s) without a 'soc' subdirectory:
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${root}
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Hints:
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- if your SoC family directory is '/foo/bar/soc/<ARCH>/my_soc_family', then add '/foo/bar' to SOC_ROOT, not the entire SoC family path
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- if in doubt, use absolute paths\n")
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endif()
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if(EXISTS ${root}/soc/${ARCH}/${SOC_PATH})
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set(SOC_DIR ${root}/soc)
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break()
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endif()
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endforeach()
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if(NOT SOC_DIR)
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message(FATAL_ERROR "Could not find SOC=${SOC_NAME} for BOARD=${BOARD},\n"
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"please check your installation.\n"
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"SOC roots searched:\n"
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"${SOC_ROOT}\n"
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)
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endif()
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