esp-idf/components/partition_table/Makefile.projbuild

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#
# Partition table
#
# The partition table is not a real component that gets linked into
# the project. Instead, it is a standalone project to generate
# the partition table binary as part of the build process. This
# binary is then added to the list of files for esptool.py to flash.
#
.PHONY: partition_table partition_table-flash partition_table-clean
# NB: gen_esp32part.py lives in the sdk/bin/ dir not component dir
GEN_ESP32PART := $(PYTHON) $(COMPONENT_PATH)/gen_esp32part.py -q
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# Has a matching value in bootloader_support esp_flash_partitions.h
PARTITION_TABLE_OFFSET := 0x8000
# if CONFIG_PARTITION_TABLE_FILENAME is unset, means we haven't re-generated config yet...
ifneq ("$(CONFIG_PARTITION_TABLE_FILENAME)","")
ifndef PARTITION_TABLE_CSV_PATH
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# Path to partition CSV file is relative to project path for custom
# partition CSV files, but relative to component dir otherwise.
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PARTITION_TABLE_ROOT := $(call dequote,$(if $(CONFIG_PARTITION_TABLE_CUSTOM),$(PROJECT_PATH),$(COMPONENT_PATH)))
quote := "
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PARTITION_TABLE_CSV_PATH := $(call dequote,$(abspath $(PARTITION_TABLE_ROOT)/$(subst $(quote),,$(CONFIG_PARTITION_TABLE_FILENAME))))
endif
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PARTITION_TABLE_CSV_NAME := $(notdir $(PARTITION_TABLE_CSV_PATH))
PARTITION_TABLE_BIN := $(BUILD_DIR_BASE)/$(PARTITION_TABLE_CSV_NAME:.csv=.bin)
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ifdef CONFIG_SECURE_BOOT_BUILD_SIGNED_BINARIES
PARTITION_TABLE_BIN_UNSIGNED := $(PARTITION_TABLE_BIN:.bin=-unsigned.bin)
# add an extra signing step for secure partition table
$(PARTITION_TABLE_BIN): $(PARTITION_TABLE_BIN_UNSIGNED) $(SDKCONFIG_MAKEFILE) $(SECURE_BOOT_SIGNING_KEY)
$(ESPSECUREPY) sign_data --keyfile $(SECURE_BOOT_SIGNING_KEY) -o $@ $<
else
# secure bootloader disabled, both files are the same
PARTITION_TABLE_BIN_UNSIGNED := $(PARTITION_TABLE_BIN)
endif
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$(PARTITION_TABLE_BIN_UNSIGNED): $(PARTITION_TABLE_CSV_PATH) $(SDKCONFIG_MAKEFILE)
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@echo "Building partitions from $(PARTITION_TABLE_CSV_PATH)..."
$(GEN_ESP32PART) $< $@
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all_binaries: $(PARTITION_TABLE_BIN)
PARTITION_TABLE_FLASH_CMD = $(ESPTOOLPY_SERIAL) write_flash $(PARTITION_TABLE_OFFSET) $(PARTITION_TABLE_BIN)
ESPTOOL_ALL_FLASH_ARGS += $(PARTITION_TABLE_OFFSET) $(PARTITION_TABLE_BIN)
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partition_table: $(PARTITION_TABLE_BIN)
@echo "Partition table binary generated. Contents:"
@echo $(SEPARATOR)
$(GEN_ESP32PART) $<
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@echo $(SEPARATOR)
@echo "Partition flashing command:"
@echo "$(PARTITION_TABLE_FLASH_CMD)"
partition_table-flash: $(PARTITION_TABLE_BIN)
@echo "Flashing partition table..."
$(PARTITION_TABLE_FLASH_CMD)
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partition_table-clean:
rm -f $(PARTITION_TABLE_BIN)
clean: partition_table-clean
endif