x86: unify arch/x86/boot/compressed/misc_??.c

Remainder of unification can occur inplace.

size reports no change in arch/x86/boot/compressed/vmlinux.
Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
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

@@ -4,7 +4,7 @@
 # create a compressed vmlinux image from the original vmlinux
 #
 
-targets := vmlinux vmlinux.bin vmlinux.bin.gz head_$(BITS).o misc_$(BITS).o piggy.o
+targets := vmlinux vmlinux.bin vmlinux.bin.gz head_$(BITS).o misc.o piggy.o
 
 KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2
 KBUILD_CFLAGS += -fno-strict-aliasing -fPIC
@@ -18,7 +18,7 @@ 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 $(obj)/piggy.o FORCE
+$(obj)/vmlinux: $(src)/vmlinux_$(BITS).lds $(obj)/head_$(BITS).o $(obj)/misc.o $(obj)/piggy.o FORCE
 	$(call if_changed,ld)
 	@:
 

arch/x86/boot/compressed/misc_32.c → arch/x86/boot/compressed/misc.c

@@ -15,6 +15,11 @@
  * we just keep it from happening
  */
 #undef CONFIG_PARAVIRT
+#ifdef CONFIG_X86_64
+#define _LINUX_STRING_H_ 1
+#define __LINUX_BITMAP_H 1
+#endif
+
 #include <linux/linkage.h>
 #include <linux/screen_info.h>
 #include <asm/io.h>
@@ -190,10 +195,20 @@ static void *memcpy(void *dest, const void *src, unsigned n);
 
 static void putstr(const char *);
 
-static unsigned long free_mem_ptr;
-static unsigned long free_mem_end_ptr;
+#ifdef CONFIG_X86_64
+#define memptr long
+#else
+#define memptr unsigned
+#endif
+
+static memptr free_mem_ptr;
+static memptr free_mem_end_ptr;
 
+#ifdef CONFIG_X86_64
+#define HEAP_SIZE             0x7000
+#else
 #define HEAP_SIZE             0x4000
+#endif
 
 static char *vidmem = (char *)0xb8000;
 static int vidport;
@@ -234,7 +249,7 @@ static void gzip_mark(void **ptr)
 
 static void gzip_release(void **ptr)
 {
-	free_mem_ptr = (unsigned long) *ptr;
+	free_mem_ptr = (memptr) *ptr;
 }
  
 static void scroll(void)
@@ -251,8 +266,10 @@ static void putstr(const char *s)
 	int x,y,pos;
 	char c;
 
+#ifdef CONFIG_X86_32
 	if (RM_SCREEN_INFO.orig_video_mode == 0 && lines == 0 && cols == 0)
 		return;
+#endif
 
 	x = RM_SCREEN_INFO.orig_x;
 	y = RM_SCREEN_INFO.orig_y;
@@ -348,7 +365,7 @@ static void error(char *x)
 		asm("hlt");
 }
 
-asmlinkage void decompress_kernel(void *rmode, unsigned long heap,
+asmlinkage void decompress_kernel(void *rmode, memptr heap,
 				  uch *input_data, unsigned long input_len,
 				  uch *output)
 {
@@ -372,6 +389,12 @@ asmlinkage void decompress_kernel(void *rmode, unsigned long heap,
 	insize = input_len;
 	inptr  = 0;
 
+#ifdef CONFIG_X86_64
+	if ((ulg)output & (__KERNEL_ALIGN - 1))
+		error("Destination address not 2M aligned");
+	if ((ulg)output >= 0xffffffffffUL)
+		error("Destination address too large");
+#else
 	if ((u32)output & (CONFIG_PHYSICAL_ALIGN -1))
 		error("Destination address not CONFIG_PHYSICAL_ALIGN aligned");
 	if (heap > ((-__PAGE_OFFSET-(512<<20)-1) & 0x7fffffff))
@@ -379,6 +402,7 @@ asmlinkage void decompress_kernel(void *rmode, unsigned long heap,
 #ifndef CONFIG_RELOCATABLE
 	if ((u32)output != LOAD_PHYSICAL_ADDR)
 		error("Wrong destination address");
+#endif
 #endif
 
 	makecrc();