HOST_CC ?= gcc HOST_CFLAGS ?= -Wall -std=gnu99 -I../src/lib/rs232 -O3 ARM_BASE ?= arm-none-eabi ARM_CC ?= $(ARM_BASE)-gcc ARM_CFLAGS ?= -mcpu=cortex-a7 -ffreestanding -std=gnu11 -Wall -Wextra $(addprefix -I, $(dirs)) ARM_AS ?= $(ARM_BASE)-as ARM_OBJCOPY ?= $(ARM_BASE)-objcopy ARM_ELFFLAGS ?= -nostdlib -lgcc KERNEL_STAGE2_OBJECTS := setup.o interrupt_vector.o interrupts.o uart.o demo_functionality.o paging.o ramfs_embeddable.o ramfs.o strings.o io.o atags.o scheduler.o PL_0_TEST_OBJECTS := PL0_utils.o svc.o PL0_test.o strings.o io.o LOADER_STAGE2_OBJECTS := uart.o strings.o io.o loader_stage2.o RAMFS_FILES := PL0_test.img all : kernel.img empty:= space:= $(empty) $(empty) dirs:=$(shell find ../src/ -type d) dirs_colon:=$(subst $(space),:,$(dirs)) vpath %.S $(dirs_colon) vpath %.c $(dirs_colon) vpath %.ld $(dirs_colon) %.o : %.c $(if $(findstring /arm/,$<),\ $(ARM_CC) $(ARM_CFLAGS),$(HOST_CC) $(HOST_CFLAGS)) -c $< -o $@ %.img : %.elf $(ARM_OBJCOPY) $^ -O binary $@ %.o: %.S $(ARM_AS) -mcpu=cortex-a7 $< -o $@ %_embeddable.o : %.img $(ARM_OBJCOPY) -I binary -O elf32-littlearm -B arm $^ $@ %.elf : %.ld $(ARM_CC) -T $< -o $@ $(ARM_ELFFLAGS) $(filter %.o,$^) PL0_test.elf : $(PL_0_TEST_OBJECTS) kernel.elf : kernel_stage1.o kernel_stage2.elf : $(KERNEL_STAGE2_OBJECTS) loader_stage2.elf : $(LOADER_STAGE2_OBJECTS) loader.elf : loader_stage1.o kernel_stage1.o : kernel_stage2.img loader_stage1.o : loader_stage2.img qemu-elf : kernel.elf qemu-system-arm -m 256 -M raspi2 -serial stdio -kernel $^ qemu-bin : kernel.img qemu-system-arm -m 256 -M raspi2 -serial stdio -kernel $^ qemu-loader : loader.img kernel.img pipe_image ./pipe_image --stdout | qemu-system-arm -m 256 -M raspi2 -serial stdio -kernel $< run-on-rpi : kernel.img pipe_image ./pipe_image --stdout | sudo socat FILE:/dev/ttyUSB0,b115200,raw - screen /dev/ttyUSB0 115200,cs8,-parenb,-cstopb,-hupcl pipe_image : pipe_image.o rs232.o $(HOST_CC) $^ -o $@ makefs : makefs.o $(HOST_CC) $^ -o $@ ramfs.img : makefs $(RAMFS_FILES) ./makefs $(RAMFS_FILES) > $@ clean : -rm -f *.img *.elf *.o pipe_image makefs .PHONY: all qemu-elf qemu-bin clean