73 lines
2.8 KiB
CMake
73 lines
2.8 KiB
CMake
# This is for tracking the top level project path
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if(BOOTLOADER_BUILD)
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set(main_project_path "${CMAKE_BINARY_DIR}/../..")
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else()
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set(main_project_path "${IDF_PROJECT_PATH}")
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endif()
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get_filename_component(secure_boot_signing_key
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"${CONFIG_SECURE_BOOT_SIGNING_KEY}"
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ABSOLUTE BASE_DIR "${main_project_path}")
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if(NOT EXISTS ${secure_boot_signing_key})
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# If the signing key is not found, create a phony gen_secure_boot_signing_key target that
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# fails the build. fail_at_build_time also touches CMakeCache.txt to cause a cmake run next time
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# (to pick up a new signing key if one exists, etc.)
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fail_at_build_time(gen_secure_boot_signing_key
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"Secure Boot Signing Key ${CONFIG_SECURE_BOOT_SIGNING_KEY} does not exist. Generate using:"
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"\tespsecure.py generate_signing_key ${CONFIG_SECURE_BOOT_SIGNING_KEY}")
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else()
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add_custom_target(gen_secure_boot_signing_key)
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endif()
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if(BOOTLOADER_BUILD OR NOT IDF_BUILD_ARTIFACTS)
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return() # don't keep recursing, generate on project builds
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endif()
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# Glue to build the bootloader subproject binary as an external
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# cmake project under this one
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#
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#
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set(bootloader_build_dir "${IDF_BUILD_ARTIFACTS_DIR}/bootloader")
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set(bootloader_binary_files
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"${bootloader_build_dir}/bootloader.elf"
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"${bootloader_build_dir}/bootloader.bin"
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"${bootloader_build_dir}/bootloader.map"
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)
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# These additional files may get generated
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if(CONFIG_SECURE_BOOTLOADER_REFLASHABLE)
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set(bootloader_binary_files
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${bootloader_binary_files}
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"${bootloader_build_dir}/bootloader-reflash-digest.bin"
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"${bootloader_build_dir}/secure-bootloader-key-192.bin"
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"${bootloader_build_dir}/secure-bootloader-key-256.bin"
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)
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endif()
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if((NOT CONFIG_SECURE_BOOT_ENABLED) OR
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CONFIG_SECURE_BOOTLOADER_REFLASHABLE OR
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CONFIG_SECURE_BOOTLOADER_ONE_TIME_FLASH)
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externalproject_add(bootloader
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# TODO: support overriding the bootloader in COMPONENT_PATHS
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SOURCE_DIR "${IDF_PATH}/components/bootloader/subproject"
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BINARY_DIR "${bootloader_build_dir}"
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CMAKE_ARGS -DSDKCONFIG=${SDKCONFIG} -DIDF_PATH=${IDF_PATH}
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-DSECURE_BOOT_SIGNING_KEY=${secure_boot_signing_key}
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INSTALL_COMMAND ""
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BUILD_ALWAYS 1 # no easy way around this...
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BUILD_BYPRODUCTS ${bootloader_binary_files}
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DEPENDS gen_secure_boot_signing_key
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)
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else()
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fail_at_build_time(bootloader "Invalid bootloader target: bad sdkconfig?")
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endif()
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# this is a hack due to an (annoying) shortcoming in cmake, it can't
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# extend the 'clean' target to the external project
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# see thread: https://cmake.org/pipermail/cmake/2016-December/064660.html
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#
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# So for now we just have the top-level build remove the final build products...
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set_property(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}" APPEND PROPERTY
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ADDITIONAL_MAKE_CLEAN_FILES
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${bootloader_binary_files})
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