1 files changed, 67 insertions, 0 deletions
diff --git a/mk/efi.mk b/mk/efi.mk
new file mode 100644
index 0000000..f097ad2
--- /dev/null
+++ b/mk/efi.mk
@@ -0,0 +1,67 @@
+include $(MAKEDIR)/syslinux.mk
+
+com32 = $(topdir)/com32
+core = $(topdir)/core
+
+# Support IA32 and x86_64 platforms with one build
+# Set up architecture specifics; for cross compilation, set ARCH as apt
+# gnuefi sets up architecture specifics in ia32 or x86_64 sub directories
+# set up the LIBDIR and EFIINC for building for the appropriate architecture
+GCCOPT := $(call gcc_ok,-fno-stack-protector,)
+EFIINC = $(objdir)/include/efi
+LIBDIR  = $(objdir)/lib
+
+ifeq ($(ARCH),i386)
+	ARCHOPT = -m32 -march=i386
+	EFI_SUBARCH = ia32
+endif
+ifeq ($(ARCH),x86_64)
+	ARCHOPT = -m64 -march=x86-64
+	EFI_SUBARCH = $(ARCH)
+endif
+
+#LIBDIR=/usr/lib
+FORMAT=efi-app-$(EFI_SUBARCH)
+
+CFLAGS = -I$(EFIINC) -I$(EFIINC)/$(EFI_SUBARCH) \
+		-DEFI_FUNCTION_WRAPPER -fPIC -fshort-wchar -ffreestanding \
+		-Wall -I$(com32)/include -I$(com32)/include/sys \
+		-I$(core)/include -I$(core)/ $(ARCHOPT) \
+		-I$(com32)/lib/ -I$(com32)/libutil/include -std=gnu99 \
+		-DELF_DEBUG -DSYSLINUX_EFI -I$(objdir) \
+		$(GCCWARN) -D__COM32__ -D__FIRMWARE_$(FIRMWARE)__ -mno-red-zone \
+		-DLDLINUX=\"$(LDLINUX)\" -fvisibility=hidden \
+		-Wno-unused-parameter $(GCCOPT)
+
+CRT0 := $(LIBDIR)/crt0-efi-$(EFI_SUBARCH).o
+LDSCRIPT := $(LIBDIR)/elf_$(EFI_SUBARCH)_efi.lds
+
+LDFLAGS = -T $(SRC)/$(ARCH)/syslinux.ld -Bsymbolic -pie -nostdlib -znocombreloc \
+		-L$(LIBDIR) --hash-style=gnu -m elf_$(ARCH) $(CRT0) -E
+
+SFLAGS     = $(GCCOPT) $(GCCWARN) $(ARCHOPT) \
+	     -fomit-frame-pointer -D__COM32__ -D__FIRMWARE_$(FIRMWARE)__ \
+	     -nostdinc -iwithprefix include \
+	     -I$(com32)/libutil/include -I$(com32)/include -I$(com32)/include/sys $(GPLINCLUDE)
+
+LIBEFI = $(objdir)/lib/libefi.a
+
+$(LIBEFI):
+	@echo Building gnu-efi for $(EFI_SUBARCH)
+	$(topdir)/efi/check-gnu-efi.sh $(EFI_SUBARCH) $(objdir)
+
+%.o: %.S	# Cancel old rule
+
+%.o: %.c
+
+.PRECIOUS: %.o
+%.o: %.S $(LIBEFI)
+	$(CC) $(SFLAGS) -c -o $@ $<
+
+.PRECIOUS: %.o
+%.o: %.c $(LIBEFI)
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+#%.efi: %.so
+#	$(OBJCOPY) -j .text -j .sdata -j .data -j .dynamic -j .dynsym -j .rel \
+#		-j .rela -j .reloc --target=$(FORMAT) $*.so $@