37 lines
936 B
Makefile
37 lines
936 B
Makefile
.PHONY: all clean
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RV_ARCH = rv32imacxw
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CC = riscv-none-elf-gcc
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OBJDUMP = riscv-none-elf-objdump
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OBJCOPY = riscv-none-elf-objcopy
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CFLAGS = -ggdb3 -Os -march=$(RV_ARCH) -ffunction-sections -fdata-sections
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LDFLAGS = -ggdb3 -march=$(RV_ARCH) -Wl,--gc-sections --specs=nosys.specs
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all: main.uf2
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main.elf: startup.o main.o
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%.uf2: %.bin
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~/code/uf2/utils/uf2conv.py -c -f 0x699b62ec -b 0x20000000 -o $@.temp $<
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# This is a *terrible* hack
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# (there isn't a flag for setting the "not main flash" bit)
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xxd $@.temp | sed 's/5546 320a 5751 5d9e 0020 0000/5546 320a 5751 5d9e 0120 0000/g' | xxd -r >$@
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rm $@.temp
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%.bin: %.elf
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$(OBJCOPY) -O binary $< $@
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%.elf: linker.lds
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$(CC) -Xlinker -Map=$(@:.elf=.map) -Wl,--script=linker.lds -nostartfiles -o $@ $(filter-out linker.lds,$+)
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$(OBJDUMP) -xdsS $@ >$(@:.elf=.dump)
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%.o: %.S
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$(CC) $(CFLAGS) -c -o $@ $<
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%.o: %.c
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$(CC) $(CFLAGS) -c -o $@ $<
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clean:
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rm -f *.o *.elf *.map *.dump *.uf2
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