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https://github.com/sle118/squeezelite-esp32.git
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OTA - redirection support + bootloader
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Sebastien
133
components/bootloader/Makefile.projbuild
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133
components/bootloader/Makefile.projbuild
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# Bootloader component (top-level project parts)
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#
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# The bootloader is not a real component that gets linked into the project.
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# Instead it is an entire standalone project (in subproject/) that gets
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# built in the upper project's build directory. This Makefile.projbuild provides
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# the glue to build the bootloader project from the original project. It
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# basically runs Make in the subproject/ directory but it needs to
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# zero some variables the ESP-IDF project.mk makefile exports first, to not
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# let them interfere.
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#
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BOOTLOADER_COMPONENT_PATH := $(COMPONENT_PATH)
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BOOTLOADER_BUILD_DIR=$(abspath $(BUILD_DIR_BASE)/bootloader)
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BOOTLOADER_BIN=$(BOOTLOADER_BUILD_DIR)/bootloader.bin
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# signing key path is resolved relative to the project directory
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CONFIG_SECURE_BOOT_SIGNING_KEY ?=
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SECURE_BOOT_SIGNING_KEY=$(abspath $(call dequote,$(CONFIG_SECURE_BOOT_SIGNING_KEY)))
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export SECURE_BOOT_SIGNING_KEY # used by bootloader_support component
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# Has a matching value in bootloader_support esp_flash_partitions.h
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BOOTLOADER_OFFSET := 0x1000
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# Custom recursive make for bootloader sub-project
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#
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# NB: Some variables are cleared in the environment, not
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# overriden, because they need to be re-defined in the child
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# project.
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BOOTLOADER_MAKE= +\
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PROJECT_PATH= \
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COMPONENT_DIRS= \
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$(MAKE) -C $(BOOTLOADER_COMPONENT_PATH)/subproject \
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V=$(V) \
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BUILD_DIR_BASE=$(BOOTLOADER_BUILD_DIR) \
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TEST_COMPONENTS= \
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TESTS_ALL= \
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EXCLUDE_COMPONENTS=
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.PHONY: bootloader-clean bootloader-flash bootloader-list-components bootloader $(BOOTLOADER_BIN)
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$(BOOTLOADER_BIN): $(SDKCONFIG_MAKEFILE)
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$(BOOTLOADER_MAKE) $@
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clean: bootloader-clean
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bootloader-list-components:
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$(BOOTLOADER_MAKE) list-components
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ifndef CONFIG_SECURE_BOOT_ENABLED
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# If secure boot disabled, bootloader flashing is integrated
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# with 'make flash' and no warnings are printed.
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bootloader: $(BOOTLOADER_BIN) | check_python_dependencies
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@echo $(SEPARATOR)
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@echo "Bootloader built. Default flash command is:"
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@echo "$(ESPTOOLPY_WRITE_FLASH) $(BOOTLOADER_OFFSET) $^"
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ESPTOOL_ALL_FLASH_ARGS += $(BOOTLOADER_OFFSET) $(BOOTLOADER_BIN)
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bootloader-flash: $(BOOTLOADER_BIN) $(call prereq_if_explicit,erase_flash) | check_python_dependencies
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$(ESPTOOLPY_WRITE_FLASH) 0x1000 $^
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else ifdef CONFIG_SECURE_BOOTLOADER_ONE_TIME_FLASH
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# One time flashing requires user to run esptool.py command themselves,
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# and warning is printed about inability to reflash.
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#
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# The flashing command is deliberately printed without an auto-reset
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# step, so the device doesn't immediately reset to flash itself.
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bootloader: $(BOOTLOADER_BIN) | check_python_dependencies
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@echo $(SEPARATOR)
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@echo "Bootloader built. One-time flash command is:"
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@echo "$(subst hard_reset,no_reset,$(ESPTOOLPY_WRITE_FLASH)) $(BOOTLOADER_OFFSET) $(BOOTLOADER_BIN)"
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@echo $(SEPARATOR)
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@echo "* IMPORTANT: After first boot, BOOTLOADER CANNOT BE RE-FLASHED on same device"
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else ifdef CONFIG_SECURE_BOOTLOADER_REFLASHABLE
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# Reflashable secure bootloader
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# generates a digest binary (bootloader + digest)
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ifdef CONFIG_SECURE_BOOTLOADER_KEY_ENCODING_192BIT
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KEY_DIGEST_LEN=192
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else
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KEY_DIGEST_LEN=256
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endif
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BOOTLOADER_DIGEST_BIN := $(BOOTLOADER_BUILD_DIR)/bootloader-reflash-digest.bin
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SECURE_BOOTLOADER_KEY := $(BOOTLOADER_BUILD_DIR)/secure-bootloader-key-$(KEY_DIGEST_LEN).bin
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ifdef CONFIG_SECURE_BOOT_BUILD_SIGNED_BINARIES
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$(SECURE_BOOTLOADER_KEY): $(SECURE_BOOT_SIGNING_KEY) | check_python_dependencies
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$(ESPSECUREPY) digest_private_key --keylen $(KEY_DIGEST_LEN) -k $< $@
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else
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$(SECURE_BOOTLOADER_KEY):
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@echo "No pre-generated key for a reflashable secure bootloader is available, due to signing configuration."
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@echo "To generate one, you can use this command:"
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@echo "espsecure.py generate_flash_encryption_key $@"
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@echo "then re-run make."
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exit 1
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endif
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bootloader: $(BOOTLOADER_DIGEST_BIN)
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@echo $(SEPARATOR)
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@echo "Bootloader built and secure digest generated. First time flash command is:"
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@echo "$(ESPEFUSEPY) burn_key secure_boot $(SECURE_BOOTLOADER_KEY)"
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@echo "$(ESPTOOLPY_WRITE_FLASH) $(BOOTLOADER_OFFSET) $(BOOTLOADER_BIN)"
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@echo $(SEPARATOR)
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@echo "To reflash the bootloader after initial flash:"
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@echo "$(ESPTOOLPY_WRITE_FLASH) 0x0 $(BOOTLOADER_DIGEST_BIN)"
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@echo $(SEPARATOR)
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@echo "* After first boot, only re-flashes of this kind (with same key) will be accepted."
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@echo "* Not recommended to re-use the same secure boot keyfile on multiple production devices."
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$(BOOTLOADER_DIGEST_BIN): $(BOOTLOADER_BIN) $(SECURE_BOOTLOADER_KEY) | check_python_dependencies
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@echo "DIGEST $(notdir $@)"
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$(ESPSECUREPY) digest_secure_bootloader -k $(SECURE_BOOTLOADER_KEY) -o $@ $<
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else # CONFIG_SECURE_BOOT_ENABLED && !CONFIG_SECURE_BOOTLOADER_REFLASHABLE && !CONFIG_SECURE_BOOTLOADER_ONE_TIME_FLASH
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bootloader:
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@echo "Invalid bootloader target: bad sdkconfig?"
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@exit 1
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endif
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ifndef CONFIG_SECURE_BOOT_ENABLED
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# don't build bootloader by default if secure boot is enabled
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all_binaries: $(BOOTLOADER_BIN)
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endif
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bootloader-clean: $(SDKCONFIG_MAKEFILE)
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$(BOOTLOADER_MAKE) app-clean
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ifdef CONFIG_SECURE_BOOTLOADER_REFLASHABLE
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rm -f $(SECURE_BOOTLOADER_KEY) $(BOOTLOADER_DIGEST_BIN)
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endif
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