73 lines
1.6 KiB
Makefile
73 lines
1.6 KiB
Makefile
MAKE := make
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ARCH := aarch64
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GNU := $(ARCH)-linux-gnu
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QEMU := qemu-system-$(ARCH)
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QEMUFLAGS += -M raspi3b -display none -serial null -serial pty
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CC := $(GNU)-gcc
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CCFLAGS += -Wall -Wextra -O0 \
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-nostdinc -nostdlib -nostartfiles -nodefaultlibs \
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-Wno-unused-parameter -Wno-main -g
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LD := $(GNU)-ld
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LDFLAGS += -g -nostdlib
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OBJCOPY := $(GNU)-objcopy
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#TARGET := kernel8
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#TARGET_DIR := ./kernel
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ELF := $(TARGET).elf
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IMG := $(TARGET).img
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LD_SCRIPT := $(TARGET_DIR)/linker.ld
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INCLUDE += -Iinclude
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LIB_DIR := ./lib
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MISC_DIR := ./misc
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#QEMUFLAGS += -dtb $(MISC_DIR)/bcm2710-rpi-3-b-plus.dtb
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BOOTLOADER_DIR := ./bootloader
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ROOTFS_DIR := ./rootfs
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CPIO := initramfs.cpio
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QEMUFLAGS += -initrd $(CPIO)
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SRCS := $(shell find $(TARGET_DIR) -name '*.[cS]') \
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$(shell find $(LIB_DIR) -name '*.c')
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OBJS := $(SRCS:%=%.o)
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.PHONY: all build clean clean_target run
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all:
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$(MAKE) build TARGET_DIR=./kernel TARGET=kernel8
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$(MAKE) build TARGET_DIR=./bootloader TARGET=bootloader
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build: $(IMG)
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$(CPIO): $(shell find $(ROOTFS_DIR))
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cd $(ROOTFS_DIR) && find . | cpio -o -H newc > ../$@
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$(IMG): $(ELF)
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$(OBJCOPY) -O binary $< $@
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$(ELF): $(LD_SCRIPT) $(OBJS)
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$(LD) -o $@ -T $^ $(LDFLAGS)
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%.S.o: %.S
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mkdir -p $(dir $@)
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$(CC) -c $< -o $@ $(INCLUDE) $(CCFLAGS)
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%.c.o: %.c
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mkdir -p $(dir $@)
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$(CC) -c $< -o $@ $(INCLUDE) $(CCFLAGS)
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clean:
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$(MAKE) clean_target TARGET_DIR=./kernel TARGET=kernel8
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$(MAKE) clean_target TARGET_DIR=./bootloader TARGET=bootloader
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clean_target:
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-rm $(OBJS) $(ELF) $(IMG) $(CPIO)
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run: all $(CPIO)
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$(QEMU) -kernel bootloader.img $(QEMUFLAGS)
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#$(QEMU) -kernel kernel8.img $(QEMUFLAGS)
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