42 lines
973 B
Makefile
42 lines
973 B
Makefile
# Used to generated .d file that deal with header dependencies
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CPPFLAGS = -MMD
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CROSS=aarch64-linux-gnu-
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CC=$(CROSS)gcc
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LD=$(CROSS)ld
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CFLAGS=-Wall -Wextra -ffreestanding -march=armv8-a+crc -mcpu=cortex-a53
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DEBUG_FLAGS += -g -Og -DDEBUG -fno-omit-frame-pointer -fno-inline
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LDSCRIPT=rpi3.ld
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OBJS=crt0.o uart.o hello.o
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gasmsrc=$(wildcard *.S)
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gasmobj=$(gasmsrc:%.S=%.o)
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csrc=$(wildcard *.c)
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cobj=$(csrc:%.c=%.o)
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deps=$(csrc:%.c=%.d) $(gasmsrc:%.S=%.d)
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KERNEL=kernel.bin
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all:$(KERNEL)
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kernel.elf: $(cobj) $(gasmobj) $(LDSCRIPT)
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$(LD) $(LDFLAGS) -o $@ $(gasmobj) $(cobj) -T$(LDSCRIPT) -Map kernel.map
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$(KERNEL): kernel.elf
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$(CROSS)objcopy -O binary $< $@
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clean:
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rm -rf $(cobj) $(gasmobj) $(deps) *.bin *.elf *.map
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run: $(KERNEL)
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qemu-system-aarch64 -machine raspi3b -kernel $< -serial stdio
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debug: CFLAGS += $(DEBUG_FLAGS)
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debug: CXXFLAGS += $(DEBUG_FLAGS)
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debug:$(KERNEL)
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aarch64-linux-gnu-gdb -q -x debug.gdb
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ifneq ($(MAKECMDGOALS),clean)
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-include $(deps)
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endif
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