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CFLAGS=-mcpu=cortex-a7 -ffreestanding -std=gnu99 -Wall -Wextra -I.
ELFFLAGS=-ffreestanding -O2 -nostdlib -lgcc -I.
all : kernel7.img
kernel.o : kernel.c
arm-none-eabi-gcc $(CFLAGS) -c $^ -o $@
uart.o : uart.c
arm-none-eabi-gcc $(CFLAGS) -c $^ -o $@
boot.o : boot.S
arm-none-eabi-as -mcpu=cortex-a7 $^ -o $@
kernel.elf : boot.o kernel.o uart.o
arm-none-eabi-gcc -T linker.ld -o $@ $(ELFFLAGS) $^
kernel7.img : kernel.elf
arm-none-eabi-objcopy $^ -O binary $@
loader_stage2.o : loader_stage2.c
arm-none-eabi-gcc $(CFLAGS) -c $^ -o $@
loader_stage2.elf : loader_stage2.o uart.o
arm-none-eabi-gcc -T loader_stage2.ld -o $@ $(ELFFLAGS) $^
loader_stage2.img : loader_stage2.elf
arm-none-eabi-objcopy $^ -O binary $@
test -n "$$(find $@ -size -16384c)" || exit -1
loader_stage2_embeddable.o : loader_stage2.img
arm-none-eabi-objcopy -I binary -O elf32-littlearm -B arm --rename-section .data=.rodata $^ $@
loader_stage1.o : loader_stage1.c
arm-none-eabi-gcc $(CFLAGS) -c $^ -o $@
loader.elf : boot.o loader_stage1.o loader_stage2_embeddable.o
arm-none-eabi-gcc -T loader_stage1.ld -o $@ $(ELFFLAGS) $^
loader.img : loader.elf
arm-none-eabi-objcopy $^ -O binary $@
qemu-elf : kernel.elf
qemu-system-arm -m 256 -M raspi2 -serial stdio -kernel $^
qemu-bin : loader.img kernel7.img pipe_image
./pipe_image | qemu-system-arm -m 256 -M raspi2 -serial stdio -kernel $<
qemu-loader : loader.img
qemu-system-arm -m 256 -M raspi2 -serial stdio -kernel $^
pipe_image : pipe_image.c RS-232/rs232.c
gcc -Wall -std=gnu99 -O3 $^ -o $@
clean :
-rm *.img *.elf *.o pipe_image
.PHONY: all qemu-elf qemu-bin clean
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