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