1 files changed, 30 insertions, 57 deletions

diff --git a/arch/mips/boot/compressed/decompress.c b/arch/mips/boot/compressed/decompress.c
index 67330c2f731..c00c4ddf451 100644
--- a/arch/mips/boot/compressed/decompress.c
+++ b/arch/mips/boot/compressed/decompress.c
@@ -1,15 +1,12 @@
 /*
- * Misc. bootloader code for many machines.
- *
  * Copyright 2001 MontaVista Software Inc.
- * Author: Matt Porter <mporter@mvista.com> Derived from
- * arch/ppc/boot/prep/misc.c
+ * Author: Matt Porter <mporter@mvista.com>
  *
- * Copyright (C) 2009 Lemote, Inc. & Institute of Computing Technology
- * Author: Wu Zhangjin <wuzj@lemote.com>
+ * Copyright (C) 2009 Lemote, Inc.
+ * Author: Wu Zhangjin <wuzhangjin@gmail.com>
  *
- * This program is free software; you can redistribute  it and/or modify it
- * under  the terms of  the GNU General  Public License as published by the
+ * This program is free software; you can redistribute	it and/or modify it
+ * under  the terms of	the GNU General	 Public License as published by the
  * Free Software Foundation;  either version 2 of the  License, or (at your
  * option) any later version.
  */
@@ -19,17 +16,15 @@
 
 #include <asm/addrspace.h>
 
-/* These two variables specify the free mem region
+/*
+ * These two variables specify the free mem region
  * that can be used for temporary malloc area
  */
 unsigned long free_mem_ptr;
 unsigned long free_mem_end_ptr;
-char *zimage_start;
 
 /* The linker tells us where the image is. */
 extern unsigned char __image_begin, __image_end;
-extern unsigned char __ramdisk_begin, __ramdisk_end;
-unsigned long initrd_size;
 
 /* debug interfaces  */
 extern void puts(const char *s);
@@ -49,78 +44,56 @@ void error(char *x)
 #define STATIC static
 
 #ifdef CONFIG_KERNEL_GZIP
-void *memcpy(void *dest, const void *src, size_t n)
-{
-	int i;
-	const char *s = src;
-	char *d = dest;
-
-	for (i = 0; i < n; i++)
-		d[i] = s[i];
-	return dest;
-}
 #include "../../../../lib/decompress_inflate.c"
 #endif
 
 #ifdef CONFIG_KERNEL_BZIP2
-void *memset(void *s, int c, size_t n)
-{
-	int i;
-	char *ss = s;
-
-	for (i = 0; i < n; i++)
-		ss[i] = c;
-	return s;
-}
 #include "../../../../lib/decompress_bunzip2.c"
 #endif
 
+#ifdef CONFIG_KERNEL_LZ4
+#include "../../../../lib/decompress_unlz4.c"
+#endif
+
 #ifdef CONFIG_KERNEL_LZMA
 #include "../../../../lib/decompress_unlzma.c"
 #endif
 
+#ifdef CONFIG_KERNEL_LZO
+#include "../../../../lib/decompress_unlzo.c"
+#endif
+
+#ifdef CONFIG_KERNEL_XZ
+#include "../../../../lib/decompress_unxz.c"
+#endif
+
 void decompress_kernel(unsigned long boot_heap_start)
 {
-	int zimage_size;
-
-	/*
-	 * We link ourself to an arbitrary low address.  When we run, we
-	 * relocate outself to that address.  __image_beign points to
-	 * the part of the image where the zImage is. -- Tom
-	 */
-	zimage_start = (char *)(unsigned long)(&__image_begin);
+	unsigned long zimage_start, zimage_size;
+
+	zimage_start = (unsigned long)(&__image_begin);
 	zimage_size = (unsigned long)(&__image_end) -
 	    (unsigned long)(&__image_begin);
 
-	/*
-	 * The zImage and initrd will be between start and _end, so they've
-	 * already been moved once.  We're good to go now. -- Tom
-	 */
 	puts("zimage at:     ");
-	puthex((unsigned long)zimage_start);
+	puthex(zimage_start);
 	puts(" ");
-	puthex((unsigned long)(zimage_size + zimage_start));
+	puthex(zimage_size + zimage_start);
 	puts("\n");
 
-	if (initrd_size) {
-		puts("initrd at:     ");
-		puthex((unsigned long)(&__ramdisk_begin));
-		puts(" ");
-		puthex((unsigned long)(&__ramdisk_end));
-		puts("\n");
-	}
-
-	/* this area are prepared for mallocing when decompressing */
+	/* This area are prepared for mallocing when decompressing */
 	free_mem_ptr = boot_heap_start;
 	free_mem_end_ptr = boot_heap_start + BOOT_HEAP_SIZE;
 
-	/* Display standard Linux/MIPS boot prompt for kernel args */
+	/* Display standard Linux/MIPS boot prompt */
 	puts("Uncompressing Linux at load address ");
 	puthex(VMLINUX_LOAD_ADDRESS_ULL);
 	puts("\n");
+
 	/* Decompress the kernel with according algorithm */
-	decompress(zimage_start, zimage_size, 0, 0,
+	decompress((char *)zimage_start, zimage_size, 0, 0,
 		   (void *)VMLINUX_LOAD_ADDRESS_ULL, 0, error);
-	/* FIXME: is there a need to flush cache here? */
+
+	/* FIXME: should we flush cache here? */
 	puts("Now, booting the kernel...\n");
 }