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esp-idf/components/bootloader/subproject/CMakeLists.txt
Djordje Nedic facab8c5a7 tools: Increase the minimal supported CMake version to 3.16 
This updates the minimal supported version of CMake to 3.16, which in turn enables us to use more CMake features and have a cleaner build system.
This is the version that provides most new features and also the one we use in our latest docker image for CI.
2022-06-01 06:35:02 +00:00

239 lines
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CMake
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cmake_minimum_required(VERSION 3.16)
if(NOT SDKCONFIG)
message(FATAL_ERROR "Bootloader subproject expects the SDKCONFIG variable to be passed "
"in by the parent build process.")
endif()
if(NOT IDF_PATH)
message(FATAL_ERROR "Bootloader subproject expects the IDF_PATH variable to be passed "
"in by the parent build process.")
endif()
if(NOT IDF_TARGET)
message(FATAL_ERROR "Bootloader subproject expects the IDF_TARGET variable to be passed "
"in by the parent build process.")
endif()
# A number of these components are implemented as config-only when built in the bootloader
set(COMPONENTS
bootloader
esptool_py
esp_hw_support
esp_system
freertos
hal
partition_table
soc
bootloader_support
log
spi_flash
micro-ecc
main
efuse
esp_system
newlib)
# Make EXTRA_COMPONENT_DIRS variable to point to the bootloader_components directory
# of the project being compiled
set(PROJECT_EXTRA_COMPONENTS "${PROJECT_SOURCE_DIR}/bootloader_components")
if(EXISTS ${PROJECT_EXTRA_COMPONENTS})
list(APPEND EXTRA_COMPONENT_DIRS "${PROJECT_EXTRA_COMPONENTS}")
endif()
# Consider each directory in project's bootloader_components as a component to be compiled
file(GLOB proj_components RELATIVE ${PROJECT_EXTRA_COMPONENTS} ${PROJECT_EXTRA_COMPONENTS}/*)
foreach(component ${proj_components})
# Only directories are considered as components
if(IS_DIRECTORY ${curdir}/${child})
list(APPEND COMPONENTS ${component})
endif()
endforeach()
set(BOOTLOADER_BUILD 1)
include("${IDF_PATH}/tools/cmake/project.cmake")
set(common_req log esp_rom esp_common esp_hw_support newlib)
idf_build_set_property(__COMPONENT_REQUIRES_COMMON "${common_req}")
idf_build_set_property(__OUTPUT_SDKCONFIG 0)
project(bootloader)
idf_build_set_property(COMPILE_DEFINITIONS "-DBOOTLOADER_BUILD=1" APPEND)
idf_build_set_property(COMPILE_OPTIONS "-fno-stack-protector" APPEND)
idf_component_get_property(main_args esptool_py FLASH_ARGS)
idf_component_get_property(sub_args esptool_py FLASH_SUB_ARGS)
# String for printing flash command
string(REPLACE ";" " " esptoolpy_write_flash
"${ESPTOOLPY} --port=(PORT) --baud=(BAUD) ${main_args} "
"write_flash ${sub_args}")
string(REPLACE ";" " " espsecurepy "${ESPSECUREPY}")
string(REPLACE ";" " " espefusepy "${ESPEFUSEPY}")
# Suppress warning: "Manually-specified variables were not used by the project: SECURE_BOOT_SIGNING_KEY"
set(ignore_signing_key "${SECURE_BOOT_SIGNING_KEY}")
if(CONFIG_SECURE_BOOTLOADER_REFLASHABLE)
if(CONFIG_SECURE_BOOTLOADER_KEY_ENCODING_192BIT)
set(key_digest_len 192)
else()
set(key_digest_len 256)
endif()
get_filename_component(bootloader_digest_bin
"bootloader-reflash-digest.bin"
ABSOLUTE BASE_DIR "${CMAKE_BINARY_DIR}")
get_filename_component(secure_bootloader_key
"secure-bootloader-key-${key_digest_len}.bin"
ABSOLUTE BASE_DIR "${CMAKE_BINARY_DIR}")
add_custom_command(OUTPUT "${secure_bootloader_key}"
COMMAND ${ESPSECUREPY} digest_private_key
--keylen "${key_digest_len}"
--keyfile "${SECURE_BOOT_SIGNING_KEY}"
"${secure_bootloader_key}"
VERBATIM)
if(CONFIG_SECURE_BOOT_BUILD_SIGNED_BINARIES)
add_custom_target(gen_secure_bootloader_key ALL DEPENDS "${secure_bootloader_key}")
else()
if(NOT EXISTS "${secure_bootloader_key}")
message(FATAL_ERROR
"No pre-generated key for a reflashable secure bootloader is available, "
"due to signing configuration."
"\nTo generate one, you can use this command:"
"\n\t${espsecurepy} generate_flash_encryption_key ${secure_bootloader_key}"
"\nIf a signing key is present, then instead use:"
"\n\t${espsecurepy} digest_private_key "
"--keylen (192/256) --keyfile KEYFILE "
"${secure_bootloader_key}")
endif()
add_custom_target(gen_secure_bootloader_key)
endif()
add_custom_command(OUTPUT "${bootloader_digest_bin}"
COMMAND ${CMAKE_COMMAND} -E echo "DIGEST ${bootloader_digest_bin}"
COMMAND ${ESPSECUREPY} digest_secure_bootloader --keyfile "${secure_bootloader_key}"
-o "${bootloader_digest_bin}" "${CMAKE_BINARY_DIR}/bootloader.bin"
MAIN_DEPENDENCY "${CMAKE_BINARY_DIR}/.bin_timestamp"
DEPENDS gen_secure_bootloader_key gen_project_binary
VERBATIM)
add_custom_target(gen_bootloader_digest_bin ALL DEPENDS "${bootloader_digest_bin}")
endif()
if(CONFIG_SECURE_BOOT_V2_ENABLED)
if(CONFIG_SECURE_BOOT_BUILD_SIGNED_BINARIES)
get_filename_component(secure_boot_signing_key
"${SECURE_BOOT_SIGNING_KEY}" ABSOLUTE BASE_DIR "${project_dir}")
if(NOT EXISTS "${secure_boot_signing_key}")
message(FATAL_ERROR
"Secure Boot Signing Key Not found."
"\nGenerate the Secure Boot V2 RSA-PSS 3072 Key."
"\nTo generate one, you can use this command:"
"\n\t${espsecurepy} generate_signing_key --version 2 ${SECURE_BOOT_SIGNING_KEY}")
endif()
set(bootloader_unsigned_bin "bootloader-unsigned.bin")
add_custom_command(OUTPUT ".signed_bin_timestamp"
COMMAND ${CMAKE_COMMAND} -E copy "${CMAKE_BINARY_DIR}/${PROJECT_BIN}"
"${CMAKE_BINARY_DIR}/${bootloader_unsigned_bin}"
COMMAND ${ESPSECUREPY} sign_data --version 2 --keyfile "${secure_boot_signing_key}"
-o "${CMAKE_BINARY_DIR}/${PROJECT_BIN}" "${CMAKE_BINARY_DIR}/${bootloader_unsigned_bin}"
COMMAND ${CMAKE_COMMAND} -E echo "Generated signed binary image ${build_dir}/${PROJECT_BIN}"
"from ${CMAKE_BINARY_DIR}/${bootloader_unsigned_bin}"
COMMAND ${CMAKE_COMMAND} -E md5sum "${CMAKE_BINARY_DIR}/${PROJECT_BIN}"
> "${CMAKE_BINARY_DIR}/.signed_bin_timestamp"
DEPENDS "${build_dir}/.bin_timestamp"
VERBATIM
COMMENT "Generated the signed Bootloader")
else()
add_custom_command(OUTPUT ".signed_bin_timestamp"
VERBATIM
COMMENT "Bootloader generated but not signed")
endif()
add_custom_target(gen_signed_bootloader ALL DEPENDS "${build_dir}/.signed_bin_timestamp")
endif()
if(CONFIG_SECURE_BOOTLOADER_ONE_TIME_FLASH)
add_custom_command(TARGET bootloader.elf POST_BUILD
COMMAND ${CMAKE_COMMAND} -E echo
"=============================================================================="
COMMAND ${CMAKE_COMMAND} -E echo
"Bootloader built. Secure boot enabled, so bootloader not flashed automatically."
COMMAND ${CMAKE_COMMAND} -E echo
"One-time flash command is:"
COMMAND ${CMAKE_COMMAND} -E echo
"\t${esptoolpy_write_flash} ${BOOTLOADER_OFFSET} ${CMAKE_BINARY_DIR}/bootloader.bin"
COMMAND ${CMAKE_COMMAND} -E echo
"* IMPORTANT: After first boot, BOOTLOADER CANNOT BE RE-FLASHED on same device"
VERBATIM)
elseif(CONFIG_SECURE_BOOTLOADER_REFLASHABLE)
add_custom_command(TARGET bootloader.elf POST_BUILD
COMMAND ${CMAKE_COMMAND} -E echo
"=============================================================================="
COMMAND ${CMAKE_COMMAND} -E echo
"Bootloader built and secure digest generated."
COMMAND ${CMAKE_COMMAND} -E echo
"Secure boot enabled, so bootloader not flashed automatically."
COMMAND ${CMAKE_COMMAND} -E echo
"Burn secure boot key to efuse using:"
COMMAND ${CMAKE_COMMAND} -E echo
"\t${espefusepy} burn_key secure_boot_v1 ${secure_bootloader_key}"
COMMAND ${CMAKE_COMMAND} -E echo
"First time flash command is:"
COMMAND ${CMAKE_COMMAND} -E echo
"\t${esptoolpy_write_flash} ${BOOTLOADER_OFFSET} ${CMAKE_BINARY_DIR}/bootloader.bin"
COMMAND ${CMAKE_COMMAND} -E echo
"=============================================================================="
COMMAND ${CMAKE_COMMAND} -E echo
"To reflash the bootloader after initial flash:"
COMMAND ${CMAKE_COMMAND} -E echo
"\t${esptoolpy_write_flash} 0x0 ${bootloader_digest_bin}"
COMMAND ${CMAKE_COMMAND} -E echo
"=============================================================================="
COMMAND ${CMAKE_COMMAND} -E echo
"* After first boot, only re-flashes of this kind (with same key) will be accepted."
COMMAND ${CMAKE_COMMAND} -E echo
"* Not recommended to re-use the same secure boot keyfile on multiple production devices."
DEPENDS gen_secure_bootloader_key gen_bootloader_digest_bin
VERBATIM)
elseif(CONFIG_SECURE_BOOT_V2_ENABLED AND (CONFIG_IDF_TARGET_ESP32S2 OR CONFIG_IDF_TARGET_ESP32C3))
add_custom_command(TARGET bootloader.elf POST_BUILD
COMMAND ${CMAKE_COMMAND} -E echo
"=============================================================================="
COMMAND ${CMAKE_COMMAND} -E echo
"Bootloader built. Secure boot enabled, so bootloader not flashed automatically."
COMMAND ${CMAKE_COMMAND} -E echo
"To sign the bootloader with additional private keys."
COMMAND ${CMAKE_COMMAND} -E echo
"\t${espsecurepy} sign_data -k secure_boot_signing_key2.pem -v 2 \
--append_signatures -o signed_bootloader.bin build/bootloader/bootloader.bin"
COMMAND ${CMAKE_COMMAND} -E echo
"Secure boot enabled, so bootloader not flashed automatically."
COMMAND ${CMAKE_COMMAND} -E echo
"\t${esptoolpy_write_flash} ${BOOTLOADER_OFFSET} ${CMAKE_BINARY_DIR}/bootloader.bin"
COMMAND ${CMAKE_COMMAND} -E echo
"=============================================================================="
DEPENDS gen_signed_bootloader
VERBATIM)
elseif(CONFIG_SECURE_BOOT_V2_ENABLED)
add_custom_command(TARGET bootloader.elf POST_BUILD
COMMAND ${CMAKE_COMMAND} -E echo
"=============================================================================="
COMMAND ${CMAKE_COMMAND} -E echo
"Bootloader built. Secure boot enabled, so bootloader not flashed automatically."
COMMAND ${CMAKE_COMMAND} -E echo
"Secure boot enabled, so bootloader not flashed automatically."
COMMAND ${CMAKE_COMMAND} -E echo
"\t${esptoolpy_write_flash} ${BOOTLOADER_OFFSET} ${CMAKE_BINARY_DIR}/bootloader.bin"
COMMAND ${CMAKE_COMMAND} -E echo
"=============================================================================="
DEPENDS gen_signed_bootloader
VERBATIM)
endif()
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