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fb50570994
The lpc176x internal rom checks that the first 8 words of the flash sum to zero. Many flash writing tools for the lpc176x will automatically add the appropriate checksum. However, it can be useful to build the checksum locally so that the image supports direct flash writing. Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
32 lines
1.1 KiB
Makefile
32 lines
1.1 KiB
Makefile
# lpc176x build rules
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# Setup the toolchain
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CROSS_PREFIX=arm-none-eabi-
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dirs-y += src/lpc176x src/generic lib/lpc176x/device
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CFLAGS += -mthumb -mcpu=cortex-m3 -Ilib/lpc176x/device -Ilib/cmsis-core
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CFLAGS_canboot.elf += --specs=nano.specs --specs=nosys.specs
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CFLAGS_canboot.elf += -T $(OUT)src/generic/armcm_link.ld
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$(OUT)canboot.elf: $(OUT)src/generic/armcm_link.ld
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# Add source files
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src-y += lpc176x/main.c lpc176x/gpio.c lpc176x/flash.c
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src-y += generic/armcm_canboot.c generic/armcm_irq.c
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src-y += generic/armcm_timer.c generic/crc16_ccitt.c
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src-y += ../lib/lpc176x/device/system_LPC17xx.c
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src-$(CONFIG_USBSERIAL) += lpc176x/usbserial.c lpc176x/chipid.c
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src-$(CONFIG_USBSERIAL) += generic/usb_cdc.c
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src-$(CONFIG_SERIAL) += lpc176x/serial.c generic/serial_irq.c
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# Build the additional bin output file
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target-y += $(OUT)canboot.bin
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$(OUT)canboot.bin: $(OUT)canboot.elf ./scripts/buildbinary.py
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@echo " Creating hex file $@"
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$(Q)$(OBJCOPY) -O binary $< $(OUT)canboot.work
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$(Q)$(PYTHON) ./scripts/buildbinary.py -b $(CONFIG_FLASH_START) -s $(CONFIG_APPLICATION_START) -l $(OUT)canboot.work $@
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