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58 lines
1.8 KiB
Makefile
58 lines
1.8 KiB
Makefile
#
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# Bootloader component
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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 src/) that gets built in
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# the upper projects build directory. This Makefile.projbuild provides the
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# glue to build the bootloader project from the original project. It
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# basically runs Make in the src/ directory but it needs to zero some variables
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# the ESP-IDF project.mk makefile exports first, to not let them interfere.
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#
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ifndef IS_BOOTLOADER_BUILD
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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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BOOTLOADER_SDKCONFIG=$(BOOTLOADER_BUILD_DIR)/sdkconfig
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# Custom recursive make for bootloader sub-project
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BOOTLOADER_MAKE=+$(MAKE) -C $(BOOTLOADER_COMPONENT_PATH)/src \
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V=$(V) SDKCONFIG=$(BOOTLOADER_SDKCONFIG) \
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BUILD_DIR_BASE=$(BOOTLOADER_BUILD_DIR) \
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.PHONY: bootloader-clean bootloader-flash bootloader $(BOOTLOADER_BIN)
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$(BOOTLOADER_BIN): | $(BOOTLOADER_BUILD_DIR)/sdkconfig
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$(Q) $(BOOTLOADER_MAKE) $@
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bootloader-clean:
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$(Q) $(BOOTLOADER_MAKE) app-clean config-clean
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$(Q) rm -f $(BOOTLOADER_SDKCONFIG) $(BOOTLOADER_SDKCONFIG).old
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clean: bootloader-clean
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bootloader: $(BOOTLOADER_BIN)
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@echo "Bootloader built. Default flash command is:"
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@echo "$(ESPTOOLPY_WRITE_FLASH) 0x1000 $^"
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all_binaries: $(BOOTLOADER_BIN)
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ESPTOOL_ALL_FLASH_ARGS += 0x1000 $(BOOTLOADER_BIN)
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# bootloader-flash calls flash in the bootloader dummy project
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bootloader-flash: $(BOOTLOADER_BIN)
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$(ESPTOOLPY_WRITE_FLASH) 0x1000 $^
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# synchronise the project level config to the bootloader's
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# config
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$(BOOTLOADER_SDKCONFIG): $(PROJECT_PATH)/sdkconfig | $(BOOTLOADER_BUILD_DIR)
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$(Q) cp $< $@
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$(BOOTLOADER_BUILD_DIR):
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$(Q) mkdir -p $@
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else
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CFLAGS += -D BOOTLOADER_BUILD=1 -I $(IDF_PATH)/components/esp32/include
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endif
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