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#------------------------------------------------------------------------------
# Copyright (c) 2020-2023, Arm Limited. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#
#------------------------------------------------------------------------------
cmake_minimum_required(VERSION 3.21)
add_library(mcuboot_config INTERFACE)
set(MCUBOOT_KEY_ENC "${MCUBOOT_PATH}/enc-rsa2048-pub.pem" CACHE FILEPATH "Path to key with which to encrypt binary")
# Add/process CBOR encoded measured boot data (MCUBOOT_MEASURED_BOOT) only if
# the store encoded measurements config is enabled. Otherwise, unencoded
# measurements are stored in the shared data area and must be processed at
# runtime.
if (CONFIG_TFM_BOOT_STORE_MEASUREMENTS AND CONFIG_TFM_BOOT_STORE_ENCODED_MEASUREMENTS)
set(MCUBOOT_MEASURED_BOOT ON)
endif()
add_subdirectory("${MCUBOOT_PATH}/boot/bootutil" bootutil)
target_include_directories(bootutil
PUBLIC
include
config
)
target_link_libraries(bootutil
PUBLIC
mcuboot_config
platform_bl2
bl2_mbedcrypto
)
target_compile_options(bootutil
PRIVATE
${BL2_COMPILER_CP_FLAG}
)
target_compile_definitions(bootutil
PRIVATE
$<$<BOOL:${DEFAULT_MCUBOOT_FLASH_MAP}>:DEFAULT_MCUBOOT_FLASH_MAP>
)
target_include_directories(mcuboot_config
INTERFACE
$<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}> # for mcuboot_config.h only
)
target_include_directories(bl2
PUBLIC
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
)
target_sources(bl2
PRIVATE
${CMAKE_CURRENT_SOURCE_DIR}/bl2_main.c
${CMAKE_CURRENT_SOURCE_DIR}/keys.c
${CMAKE_CURRENT_SOURCE_DIR}/flash_map_extended.c
${CMAKE_CURRENT_SOURCE_DIR}/flash_map_legacy.c
)
target_link_libraries(bl2
PUBLIC
bootutil
)
set(MCUBOOT_ALLOWED_LOG_LEVELS OFF ERROR WARNING INFO DEBUG)
list(FIND MCUBOOT_ALLOWED_LOG_LEVELS ${MCUBOOT_LOG_LEVEL} LOG_LEVEL_ID)
if (MCUBOOT_ALIGN_VAL GREATER 8)
set (MCUBOOT_BOOT_MAX_ALIGN ${MCUBOOT_ALIGN_VAL})
else()
set (MCUBOOT_BOOT_MAX_ALIGN 8)
endif()
configure_file(include/mcuboot_config/mcuboot_config.h.in
${CMAKE_CURRENT_BINARY_DIR}/mcuboot_config/mcuboot_config.h
@ONLY)
############################### IMAGE SIGNING ##################################
if (PLATFORM_DEFAULT_IMAGE_SIGNING)
find_package(Python3)
if(MCUBOOT_GENERATE_SIGNING_KEYPAIR)
string(REGEX MATCH "[0-9]*$" SIG_LEN ${MCUBOOT_SIGNATURE_TYPE})
add_custom_target(generated_private_key
SOURCES
generated_private_key_s.pem
generated_private_key_ns.pem
)
add_custom_command(OUTPUT generated_private_key_s.pem
COMMAND ${Python3_EXECUTABLE} ${MCUBOOT_PATH}/scripts/imgtool.py
keygen
-k generated_private_key_s.pem
-t rsa-${SIG_LEN}
COMMAND ${CMAKE_COMMAND} -E copy generated_private_key_s.pem $<TARGET_FILE_DIR:bl2>
)
add_custom_command(OUTPUT generated_private_key_ns.pem
COMMAND ${Python3_EXECUTABLE} ${MCUBOOT_PATH}/scripts/imgtool.py
keygen
-k generated_private_key_ns.pem
-t rsa-${SIG_LEN}
COMMAND ${CMAKE_COMMAND} -E copy generated_private_key_ns.pem $<TARGET_FILE_DIR:bl2>
)
set(MCUBOOT_KEY_S $<TARGET_FILE_DIR:bl2>/generated_private_key_s.pem CACHE FILEPATH "" FORCE)
set(MCUBOOT_KEY_NS $<TARGET_FILE_DIR:bl2>/generated_private_key_ns.pem CACHE FILEPATH "" FORCE)
endif()
add_custom_target(public_key ALL
SOURCES
image_s_signing_public_key.pem
image_ns_signing_public_key.pem
)
add_custom_command(OUTPUT image_s_signing_public_key.pem
# If MCUBOOT_GENERATE_SIGNING_KEYPAIR=ON then the command should depend on that
# to make sure that the key is generated and copied to the MCUBOOT_KEY_S path.
DEPENDS $<IF:$<BOOL:${MCUBOOT_GENERATE_SIGNING_KEYPAIR}>,generated_private_key,>
COMMAND ${Python3_EXECUTABLE} ${MCUBOOT_PATH}/scripts/imgtool.py
getpub
-k ${MCUBOOT_KEY_S}
-e pem
-o image_s_signing_public_key.pem
COMMAND ${CMAKE_COMMAND} -E copy image_s_signing_public_key.pem $<TARGET_FILE_DIR:bl2>
)
add_custom_command(OUTPUT image_ns_signing_public_key.pem
# If MCUBOOT_GENERATE_SIGNING_KEYPAIR=ON then the command should depend on that
# to make sure that the key is generated and copied to the MCUBOOT_KEY_NS path.
DEPENDS $<IF:$<BOOL:${MCUBOOT_GENERATE_SIGNING_KEYPAIR}>,generated_private_key,>
COMMAND ${Python3_EXECUTABLE} ${MCUBOOT_PATH}/scripts/imgtool.py
getpub
-k ${MCUBOOT_KEY_NS}
-e pem
-o image_ns_signing_public_key.pem
COMMAND ${CMAKE_COMMAND} -E copy image_ns_signing_public_key.pem $<TARGET_FILE_DIR:bl2>
)
set(IMAGE_TYPE "S_IMAGE")
set(FLASH_AREA_NUM ${MCUBOOT_S_IMAGE_FLASH_AREA_NUM})
if (MCUBOOT_IMAGE_NUMBER GREATER 1)
configure_file(signing_layout.c.in signing_layout_s.c @ONLY)
add_library(signing_layout_s OBJECT ${CMAKE_CURRENT_BINARY_DIR}/signing_layout_s.c)
else()
# Imgtool script requires the s_ns sufix. Since only one sigining layout is
# used in this mode the signing_layout_s target's source file is renamed.
configure_file(signing_layout.c.in signing_layout_s_ns.c @ONLY)
add_library(signing_layout_s OBJECT ${CMAKE_CURRENT_BINARY_DIR}/signing_layout_s_ns.c)
endif()
target_compile_options(signing_layout_s
PRIVATE
$<$<C_COMPILER_ID:GNU>:-E\;-xc>
$<$<C_COMPILER_ID:ARMClang>:-E\;-xc>
$<$<C_COMPILER_ID:IAR>:--preprocess=ns\;$<TARGET_OBJECTS:signing_layout_s>>
)
target_compile_definitions(signing_layout_s
PRIVATE
$<$<BOOL:${BL2}>:BL2>
$<$<BOOL:${MCUBOOT_IMAGE_NUMBER}>:MCUBOOT_IMAGE_NUMBER=${MCUBOOT_IMAGE_NUMBER}>
$<$<STREQUAL:${MCUBOOT_UPGRADE_STRATEGY},DIRECT_XIP>:IMAGE_ROM_FIXED>
)
target_link_libraries(signing_layout_s
PRIVATE
platform_bl2
)
add_custom_target(tfm_s_signed_bin
SOURCES tfm_s_signed.bin
)
add_custom_command(OUTPUT tfm_s_signed.bin
DEPENDS $<TARGET_FILE_DIR:tfm_s>/tfm_s.bin
DEPENDS tfm_s_bin signing_layout_s
DEPENDS $<IF:$<BOOL:${MCUBOOT_GENERATE_SIGNING_KEYPAIR}>,generated_private_key,>
WORKING_DIRECTORY ${MCUBOOT_PATH}/scripts
#Sign secure binary image with provided secret key
COMMAND ${Python3_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/scripts/wrapper/wrapper.py
-v ${MCUBOOT_IMAGE_VERSION_S}
--layout $<TARGET_OBJECTS:signing_layout_s>
-k ${MCUBOOT_KEY_S}
--public-key-format $<IF:$<BOOL:${MCUBOOT_HW_KEY}>,full,hash>
--align ${MCUBOOT_ALIGN_VAL}
--pad
--pad-header
-H ${BL2_HEADER_SIZE}
-s ${MCUBOOT_SECURITY_COUNTER_S}
-L ${MCUBOOT_ENC_KEY_LEN}
-d \"\(1,${MCUBOOT_NS_IMAGE_MIN_VER}\)\"
$<$<STREQUAL:${MCUBOOT_UPGRADE_STRATEGY},OVERWRITE_ONLY>:--overwrite-only>
$<$<BOOL:${MCUBOOT_CONFIRM_IMAGE}>:--confirm>
$<$<BOOL:${MCUBOOT_ENC_IMAGES}>:-E${MCUBOOT_KEY_ENC}>
$<$<BOOL:${MCUBOOT_MEASURED_BOOT}>:--measured-boot-record>
$<TARGET_FILE_DIR:tfm_s>/tfm_s.bin
${CMAKE_CURRENT_BINARY_DIR}/tfm_s_signed.bin
COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_BINARY_DIR}/tfm_s_signed.bin $<TARGET_FILE_DIR:bl2>
)
set(IMAGE_TYPE "NS_IMAGE")
set(FLASH_AREA_NUM ${MCUBOOT_NS_IMAGE_FLASH_AREA_NUM})
configure_file(signing_layout.c.in signing_layout_ns.c @ONLY)
add_library(signing_layout_ns OBJECT ${CMAKE_CURRENT_BINARY_DIR}/signing_layout_ns.c)
target_compile_options(signing_layout_ns
PRIVATE
$<$<C_COMPILER_ID:GNU>:-E\;-xc>
$<$<C_COMPILER_ID:ARMClang>:-E\;-xc>
$<$<C_COMPILER_ID:IAR>:--preprocess=ns\;$<TARGET_OBJECTS:signing_layout_ns>>
)
target_compile_definitions(signing_layout_ns
PRIVATE
$<$<BOOL:${BL2}>:BL2>
$<$<BOOL:${MCUBOOT_IMAGE_NUMBER}>:MCUBOOT_IMAGE_NUMBER=${MCUBOOT_IMAGE_NUMBER}>
$<$<STREQUAL:${MCUBOOT_UPGRADE_STRATEGY},DIRECT_XIP>:IMAGE_ROM_FIXED>
)
target_link_libraries(signing_layout_ns
PRIVATE
platform_bl2
)
add_custom_target(signed_images
ALL
DEPENDS tfm_s_signed_bin
)
endif()
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