# Generate partition binary
#
.PHONY: dump_otadata erase_ota blank_ota_data

GEN_EMPTY_PART := $(PYTHON) $(COMPONENT_PATH)/gen_empty_partition.py
BLANK_OTA_DATA_FILE = $(BUILD_DIR_BASE)/ota_data_initial.bin

PARTITION_TABLE_LEN := 0xC00
OTADATA_LEN := 0x2000

PARTITION_TABLE_ONCHIP_BIN_PATH := $(call dequote,$(abspath $(BUILD_DIR_BASE)))
PARTITION_TABLE_ONCHIP_BIN_NAME := "onchip_partition.bin"
OTADATA_ONCHIP_BIN_NAME := "onchip_otadata.bin"

PARTITION_TABLE_ONCHIP_BIN := $(PARTITION_TABLE_ONCHIP_BIN_PATH)/$(call dequote,$(PARTITION_TABLE_ONCHIP_BIN_NAME)) 
OTADATA_ONCHIP_BIN := $(PARTITION_TABLE_ONCHIP_BIN_PATH)/$(call dequote,$(OTADATA_ONCHIP_BIN_NAME))

PARTITION_TABLE_GET_BIN_CMD = $(ESPTOOLPY_SERIAL) read_flash $(PARTITION_TABLE_OFFSET) $(PARTITION_TABLE_LEN) $(PARTITION_TABLE_ONCHIP_BIN)
OTADATA_GET_BIN_CMD = $(ESPTOOLPY_SERIAL) read_flash $(OTADATA_OFFSET) $(OTADATA_LEN) $(OTADATA_ONCHIP_BIN)

GEN_OTADATA = $(IDF_PATH)/components/app_update/dump_otadata.py
ERASE_OTADATA_CMD = $(ESPTOOLPY_SERIAL) erase_region $(OTADATA_OFFSET) $(OTADATA_LEN)

# If there is no otadata partition, both OTA_DATA_OFFSET and BLANK_OTA_DATA_FILE 
# expand to empty values.
ESPTOOL_ALL_FLASH_ARGS += $(OTA_DATA_OFFSET) $(BLANK_OTA_DATA_FILE)

$(PARTITION_TABLE_ONCHIP_BIN):
	$(PARTITION_TABLE_GET_BIN_CMD)

onchip_otadata_get_info: $(PARTITION_TABLE_ONCHIP_BIN) 
	$(eval OTADATA_OFFSET:=$(shell $(GET_PART_INFO) --type data --subtype ota --offset $(PARTITION_TABLE_ONCHIP_BIN)))
	@echo $(if $(OTADATA_OFFSET), $(shell export OTADATA_OFFSET), $(shell rm -f $(PARTITION_TABLE_ONCHIP_BIN));$(error "ERROR: ESP32 does not have otadata partition."))

$(OTADATA_ONCHIP_BIN):
	$(OTADATA_GET_BIN_CMD)

dump_otadata: onchip_otadata_get_info $(OTADATA_ONCHIP_BIN) $(PARTITION_TABLE_ONCHIP_BIN) 
	@echo "otadata retrieved. Contents:"
	@echo $(SEPARATOR)
	$(GEN_OTADATA) $(OTADATA_ONCHIP_BIN)
	@echo $(SEPARATOR)
	rm -f $(PARTITION_TABLE_ONCHIP_BIN)
	rm -f $(OTADATA_ONCHIP_BIN)

$(BLANK_OTA_DATA_FILE): partition_table_get_info
	$(GEN_EMPTY_PART) --size $(OTA_DATA_SIZE) $(BLANK_OTA_DATA_FILE)
	$(eval BLANK_OTA_DATA_FILE = $(shell if [ $(OTA_DATA_SIZE) != 0 ]; then echo $(BLANK_OTA_DATA_FILE); else echo " "; fi) )

blank_ota_data: $(BLANK_OTA_DATA_FILE)

erase_ota: partition_table_get_info | check_python_dependencies
	@echo $(if $(OTA_DATA_OFFSET), "Erase ota_data [addr=$(OTA_DATA_OFFSET) size=$(OTA_DATA_SIZE)] ...", $(error "ERROR: Partition table does not have ota_data partition."))
	$(ESPTOOLPY_SERIAL) erase_region $(OTA_DATA_OFFSET) $(OTA_DATA_SIZE)

all: blank_ota_data
flash: blank_ota_data

clean:
	rm -f $(BLANK_OTA_DATA_FILE)