esp-idf/components/bootloader/Makefile.projbuild

58 lines
1.8 KiB
Makefile

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