x86: unify arch/x86/boot/compressed/Makefile(s)

Trivial unification of the two Makefiles.
Tested doing a defconfig build for both 32 and 64 bit and
no build changes occured.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/x86/boot/compressed/Makefile

@@ -1,5 +1,63 @@
+#
+# linux/arch/x86/boot/compressed/Makefile
+#
+# create a compressed vmlinux image from the original vmlinux
+#
+
+targets := vmlinux vmlinux.bin vmlinux.bin.gz head_$(BITS).o misc_$(BITS).o piggy.o
+
+KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2
+KBUILD_CFLAGS += -fno-strict-aliasing -fPIC
+cflags-$(CONFIG_X86_64) := -mcmodel=small
+KBUILD_CFLAGS += $(cflags-y)
+KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
+KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
+
+KBUILD_AFLAGS  := $(KBUILD_CFLAGS) -D__ASSEMBLY__
+
+LDFLAGS := -m elf_$(UTS_MACHINE)
+LDFLAGS_vmlinux := -T
+
+$(obj)/vmlinux: $(src)/vmlinux_$(BITS).lds $(obj)/head_$(BITS).o $(obj)/misc_$(BITS).o $(obj)/piggy.o FORCE
+	$(call if_changed,ld)
+	@:
+
+$(obj)/vmlinux.bin: vmlinux FORCE
+	$(call if_changed,objcopy)
+
+
 ifeq ($(CONFIG_X86_32),y)
-include ${srctree}/arch/x86/boot/compressed/Makefile_32
+targets += vmlinux.bin.all vmlinux.relocs
+hostprogs-y := relocs
+
+quiet_cmd_relocs = RELOCS  $@
+      cmd_relocs = $(obj)/relocs $< > $@;$(obj)/relocs --abs-relocs $<
+$(obj)/vmlinux.relocs: vmlinux $(obj)/relocs FORCE
+	$(call if_changed,relocs)
+
+vmlinux.bin.all-y := $(obj)/vmlinux.bin
+vmlinux.bin.all-$(CONFIG_RELOCATABLE) += $(obj)/vmlinux.relocs
+quiet_cmd_relocbin = BUILD   $@
+      cmd_relocbin = cat $(filter-out FORCE,$^) > $@
+$(obj)/vmlinux.bin.all: $(vmlinux.bin.all-y) FORCE
+	$(call if_changed,relocbin)
+
+ifdef CONFIG_RELOCATABLE
+$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin.all FORCE
+	$(call if_changed,gzip)
 else
-include ${srctree}/arch/x86/boot/compressed/Makefile_64
+$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
+	$(call if_changed,gzip)
 endif
+LDFLAGS_piggy.o := -r --format binary --oformat elf32-i386 -T
+
+else
+$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
+	$(call if_changed,gzip)
+
+LDFLAGS_piggy.o := -r --format binary --oformat elf64-x86-64 -T
+endif
+
+
+$(obj)/piggy.o: $(obj)/vmlinux_$(BITS).scr $(obj)/vmlinux.bin.gz FORCE
+	$(call if_changed,ld)