69 lines
2.2 KiB
Makefile
69 lines
2.2 KiB
Makefile
CC := avr-gcc
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LD := avr-ld
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OBJCOPY := avr-objcopy
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OBJDUMP := avr-objdump
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SIZE := avr-size
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TARGET = fc_boot
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SOURCE = $(wildcard *.c)
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# select MCU
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MCU = atmega644p
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AVRDUDE_PROG := -c avr910 -b 115200 -P /dev/ttyUSB0
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#AVRDUDE_PROG := -c dragon_isp -P usb
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# ---------------------------------------------------------------------------
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ifeq ($(MCU), atmega644p)
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AVRDUDE_MCU=m644p
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# (20MHz ext. Crystal, 2.7V BOD)
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AVRDUDE_FUSES=lfuse:w:0xff:m hfuse:w:0xdc:m efuse:w:0xfd:m
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BOOTLOADER_START=0xF800
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endif
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# ---------------------------------------------------------------------------
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CFLAGS = -pipe -g -Os -mmcu=$(MCU) -Wall
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CFLAGS += -fdata-sections -ffunction-sections
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CFLAGS += -Wa,-adhlns=$(*F).lst
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CFLAGS += -DBOOTLOADER_START=$(BOOTLOADER_START)
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LDFLAGS = -Wl,-Map,$(@:.elf=.map),--cref,--section-start=.text=$(BOOTLOADER_START)
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LDFLAGS += -Wl,--relax,--gc-sections
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LDSCRIPT := $(shell LANG=C $(CC) $(CFLAGS) -Wl,--verbose 2> /dev/null | awk '/^opened script file (.*)$$/{ print $$4 }')
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LDSCRIPT_NOVECT := ldscript-no-vectors-$(notdir $(LDSCRIPT))
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# ---------------------------------------------------------------------------
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$(TARGET): $(TARGET).elf
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@$(SIZE) -B -x --mcu=$(MCU) $<
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$(TARGET).elf: $(SOURCE:.c=.o) | $(LDSCRIPT_NOVECT)
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@echo " Linking file: $@"
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@$(CC) $(CFLAGS) $(LDFLAGS) -Wl,-T$(LDSCRIPT_NOVECT) -o $@ $^ 2> /dev/null
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@$(OBJDUMP) -h -S $@ > $(@:.elf=.lss)
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@$(OBJCOPY) -j .text -j .data -O ihex $@ $(@:.elf=.hex)
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@$(OBJCOPY) -j .text -j .data -O binary $@ $(@:.elf=.bin)
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%.o: %.c $(MAKEFILE_LIST)
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@echo " Building file: $<"
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@$(CC) $(CFLAGS) -o $@ -c $<
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# remove interrupt vector section from avr-libc linker script
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# (remove all lines with *vectors* and insert DISCARD line above .text declaration)
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$(LDSCRIPT_NOVECT): $(LDSCRIPT) $(MAKEFILE_LIST)
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@echo " Creating: $@"
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@sed -e '/.*vectors.*/d' -e 's/\(^[ \t]*\)\(.text[ \t]*\:\)$$/\1\/DISCARD\/ : { *(.vectors) }\n\1\2/g' $< > $@
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# -@diff -uNr $< $@ > $@.diff
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clean:
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rm -rf $(SOURCE:.c=.o) $(SOURCE:.c=.lst) $(addprefix $(TARGET), .elf .map .lss .hex .bin) $(LDSCRIPT_NOVECT)
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install: $(TARGET).elf
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avrdude $(AVRDUDE_PROG) -p $(AVRDUDE_MCU) -U flash:w:$(<:.elf=.hex)
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fuses:
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avrdude $(AVRDUDE_PROG) -p $(AVRDUDE_MCU) $(patsubst %,-U %, $(AVRDUDE_FUSES))
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