Initial commit
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z8
@@ -0,0 +1,171 @@
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ARCH = x64
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# You can alter the subsystem according to your EFI binary target:
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# 10 = EFI application
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# 11 = EFI boot service driver
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# 12 = EFI runtime driver
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SUBSYSTEM = 10
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# Try to auto-detect the target ARCH
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ifeq ($(shell uname -o),Msys)
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IS_MINGW32 = $(findstring MINGW32,$(shell uname -s))
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IS_MINGW64 = $(findstring MINGW64,$(shell uname -s))
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ifeq ($(IS_MINGW32),MINGW32)
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ARCH = ia32
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endif
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ifeq ($(IS_MINGW64),MINGW64)
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ARCH = x64
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endif
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else
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ifeq ($(shell uname -m),x86_64)
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ARCH = x64
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else ifeq ($(shell uname -m),arm)
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ARCH = arm
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CROSS_COMPILE =
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else ifeq ($(shell uname -m),aarch64)
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ARCH = aa64
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CROSS_COMPILE =
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else
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ARCH = ia32
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endif
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endif
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# Auto-detect the host arch for MinGW
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ifeq ($(shell uname -m),x86_64)
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MINGW_HOST = w64
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else
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MINGW_HOST = w32
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endif
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ifeq ($(ARCH),x64)
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GNUEFI_ARCH = x86_64
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GCC_ARCH = x86_64
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QEMU_ARCH = x86_64
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FW_BASE = OVMF
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CROSS_COMPILE = $(GCC_ARCH)-$(MINGW_HOST)-mingw32-
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EP_PREFIX =
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CFLAGS = -m64 -mno-red-zone
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LDFLAGS = -Wl,-dll -Wl,--subsystem,$(SUBSYSTEM)
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else ifeq ($(ARCH),ia32)
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GNUEFI_ARCH = ia32
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GCC_ARCH = i686
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QEMU_ARCH = i386
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FW_BASE = OVMF
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CROSS_COMPILE = $(GCC_ARCH)-$(MINGW_HOST)-mingw32-
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EP_PREFIX = _
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CFLAGS = -m32 -mno-red-zone
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LDFLAGS = -Wl,-dll -Wl,--subsystem,$(SUBSYSTEM)
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else ifeq ($(ARCH),arm)
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GNUEFI_ARCH = arm
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GCC_ARCH = arm
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QEMU_ARCH = arm
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FW_BASE = QEMU_EFI
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CROSS_COMPILE = $(GCC_ARCH)-linux-gnueabihf-
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EP_PREFIX =
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CFLAGS = -marm -fpic -fshort-wchar
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LDFLAGS = -Wl,--no-wchar-size-warning -Wl,--defsym=EFI_SUBSYSTEM=$(SUBSYSTEM)
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CRT0_LIBS = -lgnuefi
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QEMU_OPTS = -M virt -cpu cortex-a15
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else ifeq ($(ARCH),aa64)
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GNUEFI_ARCH = aarch64
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GCC_ARCH = aarch64
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QEMU_ARCH = aarch64
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FW_BASE = QEMU_EFI
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CROSS_COMPILE = $(GCC_ARCH)-linux-gnu-
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EP_PREFIX =
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CFLAGS = -fpic -fshort-wchar
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LDFLAGS = -Wl,--no-wchar-size-warning -Wl,--defsym=EFI_SUBSYSTEM=$(SUBSYSTEM)
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CRT0_LIBS = -lgnuefi
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QEMU_OPTS = -M virt -cpu cortex-a57
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endif
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FW_ARCH = $(shell echo $(ARCH) | tr a-z A-Z)
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FW_ZIP = $(FW_BASE)-$(FW_ARCH).zip
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GNUEFI_DIR = $(CURDIR)/gnu-efi
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GNUEFI_LIBS = lib
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# If the compiler produces an elf binary, we need to fiddle with a PE crt0
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ifneq ($(CRT0_LIBS),)
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CRT0_DIR = $(GNUEFI_DIR)/$(GNUEFI_ARCH)/gnuefi
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LDFLAGS += -L$(CRT0_DIR) -T $(GNUEFI_DIR)/gnuefi/elf_$(GNUEFI_ARCH)_efi.lds $(CRT0_DIR)/crt0-efi-$(GNUEFI_ARCH).o
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GNUEFI_LIBS += gnuefi
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endif
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# SYSTEMROOT is only defined on Windows systems
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ifneq ($(SYSTEMROOT),)
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QEMU = "/c/Program Files/qemu/qemu-system-$(QEMU_ARCH)w.exe"
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# MinGW on Windows doesn't use (tuple)-ar but (tuple)-gcc-ar
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# so we remove the cross compiler tuple altogether
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CROSS_COMPILE =
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else
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QEMU = qemu-system-$(QEMU_ARCH) -nographic
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endif
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CC := $(CROSS_COMPILE)gcc
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OBJCOPY := $(CROSS_COMPILE)objcopy
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CFLAGS += -fno-stack-protector -Wshadow -Wall -Wunused -Werror-implicit-function-declaration
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CFLAGS += -I$(GNUEFI_DIR)/inc -I$(GNUEFI_DIR)/inc/$(GNUEFI_ARCH) -I$(GNUEFI_DIR)/inc/protocol
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CFLAGS += -DCONFIG_$(GNUEFI_ARCH) -D__MAKEWITH_GNUEFI -DGNU_EFI_USE_MS_ABI
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LDFLAGS += -L$(GNUEFI_DIR)/$(GNUEFI_ARCH)/lib -e $(EP_PREFIX)efi_main
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LDFLAGS += -s -Wl,-Bsymbolic -nostdlib -shared
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LIBS = -lefi $(CRT0_LIBS)
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ifeq (, $(shell which $(CC)))
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$(error The selected compiler ($(CC)) was not found)
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endif
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GCCVERSION := $(shell $(CC) -dumpversion | cut -f1 -d.)
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GCCMINOR := $(shell $(CC) -dumpversion | cut -f2 -d.)
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GCCMACHINE := $(shell $(CC) -dumpmachine)
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GCCNEWENOUGH := $(shell ( [ $(GCCVERSION) -gt "4" ] \
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|| ( [ $(GCCVERSION) -eq "4" ] \
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&& [ $(GCCMINOR) -ge "7" ] ) ) \
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&& echo 1)
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ifneq ($(GCCNEWENOUGH),1)
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$(error You need GCC 4.7 or later)
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endif
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ifneq ($(GCC_ARCH),$(findstring $(GCC_ARCH), $(GCCMACHINE)))
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$(error The selected compiler ($(CC)) is not set for $(ARCH))
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endif
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.PHONY: all clean superclean
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all: $(GNUEFI_DIR)/$(GNUEFI_ARCH)/lib/libefi.a main.efi
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$(GNUEFI_DIR)/$(GNUEFI_ARCH)/lib/libefi.a:
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$(MAKE) -C$(GNUEFI_DIR) CROSS_COMPILE=$(CROSS_COMPILE) ARCH=$(GNUEFI_ARCH) $(GNUEFI_LIBS)
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%.efi: %.o
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@echo [LD] $(notdir $@)
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ifeq ($(CRT0_LIBS),)
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@$(CC) $(LDFLAGS) $< -o $@ $(LIBS)
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else
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@$(CC) $(LDFLAGS) $< -o $*.elf $(LIBS)
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@$(OBJCOPY) -j .text -j .sdata -j .data -j .dynamic -j .dynsym -j .rel* \
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-j .rela* -j .reloc -j .eh_frame -O binary $*.elf $@
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@rm -f $*.elf
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endif
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%.o: %.c
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@echo [CC] $(notdir $@)
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@$(CC) $(CFLAGS) -ffreestanding -c $<
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qemu: CFLAGS += -D_DEBUG
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qemu: all $(FW_BASE)_$(FW_ARCH).fd image/efi/boot/boot$(ARCH).efi
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$(QEMU) $(QEMU_OPTS) -bios ./$(FW_BASE)_$(FW_ARCH).fd -net none -hda fat:rw:image
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image/efi/boot/boot$(ARCH).efi: main.efi
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mkdir -p image/efi/boot
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cp -f $< $@
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$(FW_BASE)_$(FW_ARCH).fd:
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wget https://efi.akeo.ie/$(FW_BASE)/$(FW_ZIP)
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unzip $(FW_ZIP) $(FW_BASE).fd
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mv $(FW_BASE).fd $(FW_BASE)_$(FW_ARCH).fd
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rm $(FW_ZIP)
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clean:
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rm -f main.efi *.o
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rm -rf image
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superclean: clean
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$(MAKE) -C$(GNUEFI_DIR) ARCH=$(GNUEFI_ARCH) clean
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rm -f *.fd
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