From: Ard Biesheuvel <ard.biesheuvel@linaro.org>

Date: Fri, 8 Aug 2014 17:53:42 +0200
Subject: [PATCH 3/4] Add support for non-PE/COFF capable objcopy

Introduce HAVE_EFI_OBJCOPY and set it if objcopy for $ARCH support PE/COOF and
EFI, i.e., it supports --target efi-[app|bsdrv|rtdrv] options. Use it to decide
whether to invoke objcopy with those options or use the linker to populate the
PE/COFF header.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Nigel Croxon <nigel.croxon@hp.com>

gnu-efi-3.0/Make.defaults

@@ -107,6 +107,14 @@ ifeq ($(ARCH),x86_64)
   endif
 endif
 
+#
+# Set HAVE_EFI_OBJCOPY if objcopy understands --target efi-[app|bsdrv|rtdrv],
+# otherwise we need to compose the PE/COFF header using the assembler
+#
+ifneq ($(ARCH),aarch64)
+export HAVE_EFI_OBJCOPY=y
+endif
+
 # Generic compilation flags
 INCDIR  += -I$(SRCDIR) -I$(TOPDIR)/inc -I$(TOPDIR)/inc/$(ARCH) \
            -I$(TOPDIR)/inc/protocol

gnu-efi-3.0/Make.rules

@@ -35,8 +35,8 @@
 #
 
 %.efi: %.so
-	$(OBJCOPY) -j .text -j .sdata -j .data -j .dynamic -j .dynsym -j .rel \
-		   -j .rela -j .reloc --target=$(FORMAT) $*.so $@
+	$(OBJCOPY) -j .text -j .sdata -j .data -j .dynamic -j .dynsym -j .rel* \
+		   -j .rela* -j .reloc $(FORMAT) $*.so $@
 
 %.so: %.o
 	$(LD) $(LDFLAGS) $^ -o $@ $(LOADLIBES)

gnu-efi-3.0/apps/Makefile

@@ -58,8 +58,6 @@ LOADLIBES	+= -lefi -lgnuefi
 LOADLIBES	+= $(shell $(CC) $(ARCH3264) -print-libgcc-file-name)
 LOADLIBES	+= -T $(LDSCRIPT)
 
-FORMAT		= efi-app-$(ARCH)
-
 TARGET_APPS = t.efi t2.efi t3.efi t4.efi t5.efi t6.efi \
 	      printenv.efi t7.efi t8.efi tcc.efi modelist.efi \
 	      route80h.efi drv0_use.efi AllocPages.efi \
@@ -67,13 +65,27 @@ TARGET_APPS = t.efi t2.efi t3.efi t4.efi t5.efi t6.efi \
 TARGET_BSDRIVERS = drv0.efi
 TARGET_RTDRIVERS =
 
+ifneq ($(HAVE_EFI_OBJCOPY),)
+
+FORMAT		:= --target efi-app-$(ARCH)
+$(TARGET_BSDRIVERS): FORMAT=--target efi-bsdrv-$(ARCH)
+$(TARGET_RTDRIVERS): FORMAT=--target efi-rtdrv-$(ARCH)
+
+else
+
+SUBSYSTEM	:= 0xa
+$(TARGET_BSDRIVERS): SUBSYSTEM = 0xb
+$(TARGET_RTDRIVERS): SUBSYSTEM = 0xc
+
+FORMAT		:= -O binary
+LDFLAGS		+= --defsym=EFI_SUBSYSTEM=$(SUBSYSTEM)
+
+endif
+
 TARGETS = $(TARGET_APPS) $(TARGET_BSDRIVERS) $(TARGET_RTDRIVERS)
 
 all:	$(TARGETS)
 
-$(TARGET_BSDRIVERS): FORMAT=efi-bsdrv-$(ARCH)
-$(TARGET_RTDRIVERS): FORMAT=efi-rtdrv-$(ARCH)
-
 clean:
 	rm -f $(TARGETS) *~ *.o *.so