esp-idf/components/bootloader_support/component.mk

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COMPONENT_ADD_INCLUDEDIRS := include
ifdef IS_BOOTLOADER_BUILD
# share "include_bootloader" headers with bootloader main component
COMPONENT_ADD_INCLUDEDIRS += include_bootloader
else
COMPONENT_PRIV_INCLUDEDIRS := include_bootloader
endif
COMPONENT_SRCDIRS := src
ifndef IS_BOOTLOADER_BUILD
COMPONENT_SRCDIRS += src/idf # idf sub-directory contains platform agnostic IDF versions
else
COMPONENT_SRCDIRS += src/$(IDF_TARGET) # one sub-dir per chip
endif
ifndef IS_BOOTLOADER_BUILD
COMPONENT_OBJEXCLUDE := src/bootloader_init.o
endif
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COMPONENT_OBJEXCLUDE += src/bootloader_flash_config_esp32s2.o \
src/bootloader_efuse_esp32s2.o
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#
# Secure boot signing key support
#
ifdef CONFIG_SECURE_SIGNED_APPS
# this path is created relative to the component build directory
SECURE_BOOT_VERIFICATION_KEY := $(abspath signature_verification_key.bin)
ifdef CONFIG_SECURE_BOOT_BUILD_SIGNED_BINARIES
# verification key derived from signing key.
$(SECURE_BOOT_VERIFICATION_KEY): $(SECURE_BOOT_SIGNING_KEY) $(SDKCONFIG_MAKEFILE)
$(ESPSECUREPY) extract_public_key --keyfile $< $@
else
# find the configured public key file
ORIG_SECURE_BOOT_VERIFICATION_KEY := $(call resolvepath,$(call dequote,$(CONFIG_SECURE_BOOT_VERIFICATION_KEY)),$(PROJECT_PATH))
$(ORIG_SECURE_BOOT_VERIFICATION_KEY):
@echo "Secure boot verification public key '$@' missing."
@echo "This can be extracted from the private signing key, see"
@echo "docs/security/secure-boot.rst for details."
exit 1
# copy it into the build dir, so the secure boot verification key has
# a predictable file name
$(SECURE_BOOT_VERIFICATION_KEY): $(ORIG_SECURE_BOOT_VERIFICATION_KEY) $(SDKCONFIG_MAKEFILE)
$(summary) CP $< $@
cp $< $@
endif #CONFIG_SECURE_BOOT_BUILD_SIGNED_BINARIES
COMPONENT_EXTRA_CLEAN += $(SECURE_BOOT_VERIFICATION_KEY)
COMPONENT_EMBED_FILES := $(SECURE_BOOT_VERIFICATION_KEY)
endif #CONFIG_SECURE_SIGNED_APPS