mirror of https://gitee.com/openkylin/qemu.git
59 lines
2.0 KiB
Makefile
59 lines
2.0 KiB
Makefile
all: build-all
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# Dummy command so that make thinks it has done something
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@true
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include ../../config-host.mak
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include $(SRC_PATH)/rules.mak
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$(call set-vpath, $(SRC_PATH)/pc-bios/optionrom)
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.PHONY : all clean build-all
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# Compiling with no optimization creates ROMs that are too large
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ifeq ($(lastword $(filter -O%, -O0 $(CFLAGS))),-O0)
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override CFLAGS += -O2
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endif
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# Drop -fstack-protector and the like
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QEMU_CFLAGS := $(filter -W%, $(QEMU_CFLAGS)) $(CFLAGS_NOPIE) -ffreestanding
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QEMU_CFLAGS += $(call cc-option, $(QEMU_CFLAGS), -fno-stack-protector)
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QEMU_CFLAGS += $(call cc-option, $(QEMU_CFLAGS), -m16)
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ifeq ($(filter -m16, $(QEMU_CFLAGS)),)
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# Attempt to work around compilers that lack -m16 (GCC <= 4.8, clang <= ??)
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# On GCC we add -fno-toplevel-reorder to keep the order of asm blocks with
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# respect to the rest of the code. clang does not have -fno-toplevel-reorder,
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# but it places all asm blocks at the beginning and we're relying on it for
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# the option ROM header. So just force clang not to use the integrated
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# assembler, which doesn't support .code16gcc.
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QEMU_CFLAGS += $(call cc-option, $(QEMU_CFLAGS), -fno-toplevel-reorder)
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QEMU_CFLAGS += $(call cc-option, $(QEMU_CFLAGS), -no-integrated-as)
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QEMU_CFLAGS += -m32 -include $(SRC_PATH)/pc-bios/optionrom/code16gcc.h
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endif
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QEMU_INCLUDES += -I$(SRC_PATH)
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Wa = -Wa,
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ASFLAGS += -32
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QEMU_CFLAGS += $(call cc-c-option, $(QEMU_CFLAGS), $(Wa)-32)
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build-all: multiboot.bin linuxboot.bin linuxboot_dma.bin kvmvapic.bin
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# suppress auto-removal of intermediate files
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.SECONDARY:
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%.o: %.S
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$(call quiet-command,$(CPP) $(QEMU_INCLUDES) $(QEMU_DGFLAGS) -c -o - $< | $(AS) $(ASFLAGS) -o $@,"AS","$(TARGET_DIR)$@")
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%.img: %.o
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$(call quiet-command,$(LD) $(LDFLAGS_NOPIE) -m $(LD_I386_EMULATION) -T $(SRC_PATH)/pc-bios/optionrom/flat.lds -s -o $@ $<,"BUILD","$(TARGET_DIR)$@")
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%.raw: %.img
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$(call quiet-command,$(OBJCOPY) -O binary -j .text $< $@,"BUILD","$(TARGET_DIR)$@")
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%.bin: %.raw
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$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/signrom.py $< $@,"SIGN","$(TARGET_DIR)$@")
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clean:
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rm -f *.o *.d *.raw *.img *.bin *~
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