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authorPaul Mundt <lethal@linux-sh.org>2009-07-12 01:37:30 +0900
committerPaul Mundt <lethal@linux-sh.org>2009-07-12 01:37:30 +0900
commitdf8ce2595fbac8b046322fce9df61ce1cf8ddf62 (patch)
tree46c5d6a316deab58f4cb482e72de56b1be0fc202 /arch/sh/boot
parentf686d8c11c61143b9705ed38d8cd26b0643902a4 (diff)
downloadvexpress-lsk-df8ce2595fbac8b046322fce9df61ce1cf8ddf62.tar.gz
sh: Tidy up gzip-based zImage decompression.
This brings the zImage handling in to the current century, in preparation for handling the other compression types. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/boot')
-rw-r--r--arch/sh/boot/compressed/misc_32.c106
-rw-r--r--arch/sh/boot/compressed/misc_64.c127
2 files changed, 18 insertions, 215 deletions
diff --git a/arch/sh/boot/compressed/misc_32.c b/arch/sh/boot/compressed/misc_32.c
index efdba6b2957..1ab4f49153b 100644
--- a/arch/sh/boot/compressed/misc_32.c
+++ b/arch/sh/boot/compressed/misc_32.c
@@ -14,73 +14,23 @@
#include <asm/uaccess.h>
#include <asm/addrspace.h>
#include <asm/page.h>
-#ifdef CONFIG_SH_STANDARD_BIOS
#include <asm/sh_bios.h>
-#endif
/*
* gzip declarations
*/
-#define OF(args) args
#define STATIC static
#undef memset
#undef memcpy
#define memzero(s, n) memset ((s), 0, (n))
-typedef unsigned char uch;
-typedef unsigned short ush;
-typedef unsigned long ulg;
-
-#define WSIZE 0x8000 /* Window size must be at least 32k, */
- /* and a power of two */
-
-static uch *inbuf; /* input buffer */
-static uch window[WSIZE]; /* Sliding window buffer */
-
-static unsigned insize = 0; /* valid bytes in inbuf */
-static unsigned inptr = 0; /* index of next byte to be processed in inbuf */
-static unsigned outcnt = 0; /* bytes in output buffer */
-
-/* gzip flag byte */
-#define ASCII_FLAG 0x01 /* bit 0 set: file probably ASCII text */
-#define CONTINUATION 0x02 /* bit 1 set: continuation of multi-part gzip file */
-#define EXTRA_FIELD 0x04 /* bit 2 set: extra field present */
-#define ORIG_NAME 0x08 /* bit 3 set: original file name present */
-#define COMMENT 0x10 /* bit 4 set: file comment present */
-#define ENCRYPTED 0x20 /* bit 5 set: file is encrypted */
-#define RESERVED 0xC0 /* bit 6,7: reserved */
-
-#define get_byte() (inptr < insize ? inbuf[inptr++] : fill_inbuf())
-
-/* Diagnostic functions */
-#ifdef DEBUG
-# define Assert(cond,msg) {if(!(cond)) error(msg);}
-# define Trace(x) fprintf x
-# define Tracev(x) {if (verbose) fprintf x ;}
-# define Tracevv(x) {if (verbose>1) fprintf x ;}
-# define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
-# define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;}
-#else
-# define Assert(cond,msg)
-# define Trace(x)
-# define Tracev(x)
-# define Tracevv(x)
-# define Tracec(c,x)
-# define Tracecv(c,x)
-#endif
-
-static int fill_inbuf(void);
-static void flush_window(void);
static void error(char *m);
extern char input_data[];
extern int input_len;
-
-static long bytes_out = 0;
-static uch *output_data;
-static unsigned long output_ptr = 0;
+static unsigned char *output;
static void error(char *m);
@@ -93,7 +43,9 @@ static unsigned long free_mem_end_ptr;
#define HEAP_SIZE 0x10000
-#include "../../../../lib/inflate.c"
+#ifdef CONFIG_KERNEL_GZIP
+#include "../../../../lib/decompress_inflate.c"
+#endif
#ifdef CONFIG_SH_STANDARD_BIOS
size_t strlen(const char *s)
@@ -138,44 +90,6 @@ void* memcpy(void* __dest, __const void* __src,
return __dest;
}
-/* ===========================================================================
- * Fill the input buffer. This is called only when the buffer is empty
- * and at least one byte is really needed.
- */
-static int fill_inbuf(void)
-{
- if (insize != 0) {
- error("ran out of input data");
- }
-
- inbuf = input_data;
- insize = input_len;
- inptr = 1;
- return inbuf[0];
-}
-
-/* ===========================================================================
- * Write the output window window[0..outcnt-1] and update crc and bytes_out.
- * (Used for the decompressed data only.)
- */
-static void flush_window(void)
-{
- ulg c = crc; /* temporary variable */
- unsigned n;
- uch *in, *out, ch;
-
- in = window;
- out = &output_data[output_ptr];
- for (n = 0; n < outcnt; n++) {
- ch = *out++ = *in++;
- c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8);
- }
- crc = c;
- bytes_out += (ulg)outcnt;
- output_ptr += (ulg)outcnt;
- outcnt = 0;
-}
-
static void error(char *x)
{
puts("\n\n");
@@ -191,16 +105,18 @@ long* stack_start = &user_stack[STACK_SIZE];
void decompress_kernel(void)
{
- output_data = NULL;
- output_ptr = PHYSADDR((unsigned long)&_text+PAGE_SIZE);
+ unsigned long output_addr;
+
+ output_addr = PHYSADDR((unsigned long)&_text+PAGE_SIZE);
#ifdef CONFIG_29BIT
- output_ptr |= P2SEG;
+ output_addr |= P2SEG;
#endif
+
+ output = (unsigned char *)output_addr;
free_mem_ptr = (unsigned long)&_end;
free_mem_end_ptr = free_mem_ptr + HEAP_SIZE;
- makecrc();
puts("Uncompressing Linux... ");
- gunzip();
+ decompress(input_data, input_len, NULL, NULL, output, NULL, error);
puts("Ok, booting the kernel.\n");
}
diff --git a/arch/sh/boot/compressed/misc_64.c b/arch/sh/boot/compressed/misc_64.c
index 2941657e18a..0c6894e3711 100644
--- a/arch/sh/boot/compressed/misc_64.c
+++ b/arch/sh/boot/compressed/misc_64.c
@@ -20,67 +20,18 @@ int cache_control(unsigned int command);
* gzip declarations
*/
-#define OF(args) args
#define STATIC static
#undef memset
#undef memcpy
#define memzero(s, n) memset ((s), 0, (n))
-typedef unsigned char uch;
-typedef unsigned short ush;
-typedef unsigned long ulg;
-
-#define WSIZE 0x8000 /* Window size must be at least 32k, */
- /* and a power of two */
-
-static uch *inbuf; /* input buffer */
-static uch window[WSIZE]; /* Sliding window buffer */
-
-static unsigned insize = 0; /* valid bytes in inbuf */
-static unsigned inptr = 0; /* index of next byte to be processed in inbuf */
-static unsigned outcnt = 0; /* bytes in output buffer */
-
-/* gzip flag byte */
-#define ASCII_FLAG 0x01 /* bit 0 set: file probably ASCII text */
-#define CONTINUATION 0x02 /* bit 1 set: continuation of multi-part gzip file */
-#define EXTRA_FIELD 0x04 /* bit 2 set: extra field present */
-#define ORIG_NAME 0x08 /* bit 3 set: original file name present */
-#define COMMENT 0x10 /* bit 4 set: file comment present */
-#define ENCRYPTED 0x20 /* bit 5 set: file is encrypted */
-#define RESERVED 0xC0 /* bit 6,7: reserved */
-
-#define get_byte() (inptr < insize ? inbuf[inptr++] : fill_inbuf())
-
-/* Diagnostic functions */
-#ifdef DEBUG
-# define Assert(cond,msg) {if(!(cond)) error(msg);}
-# define Trace(x) fprintf x
-# define Tracev(x) {if (verbose) fprintf x ;}
-# define Tracevv(x) {if (verbose>1) fprintf x ;}
-# define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
-# define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;}
-#else
-# define Assert(cond,msg)
-# define Trace(x)
-# define Tracev(x)
-# define Tracevv(x)
-# define Tracec(c,x)
-# define Tracecv(c,x)
-#endif
-
-static int fill_inbuf(void);
-static void flush_window(void);
static void error(char *m);
extern char input_data[];
extern int input_len;
-static long bytes_out = 0;
-static uch *output_data;
-static unsigned long output_ptr = 0;
-
-static void error(char *m);
+static unsigned char *output_data;
static void puts(const char *);
@@ -91,7 +42,9 @@ static unsigned long free_mem_end_ptr;
#define HEAP_SIZE 0x10000
-#include "../../../../lib/inflate.c"
+#ifdef CONFIG_KERNEL_GZIP
+#include "../../../../lib/decompress_inflate.c"
+#endif
void puts(const char *s)
{
@@ -117,45 +70,6 @@ void *memcpy(void *__dest, __const void *__src, size_t __n)
return __dest;
}
-/* ===========================================================================
- * Fill the input buffer. This is called only when the buffer is empty
- * and at least one byte is really needed.
- */
-static int fill_inbuf(void)
-{
- if (insize != 0) {
- error("ran out of input data\n");
- }
-
- inbuf = input_data;
- insize = input_len;
- inptr = 1;
- return inbuf[0];
-}
-
-/* ===========================================================================
- * Write the output window window[0..outcnt-1] and update crc and bytes_out.
- * (Used for the decompressed data only.)
- */
-static void flush_window(void)
-{
- ulg c = crc; /* temporary variable */
- unsigned n;
- uch *in, *out, ch;
-
- in = window;
- out = &output_data[output_ptr];
- for (n = 0; n < outcnt; n++) {
- ch = *out++ = *in++;
- c = crc_32_tab[((int) c ^ ch) & 0xff] ^ (c >> 8);
- }
- crc = c;
- bytes_out += (ulg) outcnt;
- output_ptr += (ulg) outcnt;
- outcnt = 0;
- puts(".");
-}
-
static void error(char *x)
{
puts("\n\n");
@@ -171,40 +85,13 @@ long *stack_start = &user_stack[STACK_SIZE];
void decompress_kernel(void)
{
- output_data = (uch *) (CONFIG_MEMORY_START + 0x2000);
+ output_data = (unsigned char *) (CONFIG_MEMORY_START + 0x2000);
free_mem_ptr = (unsigned long) &_end;
free_mem_end_ptr = free_mem_ptr + HEAP_SIZE;
- makecrc();
puts("Uncompressing Linux... ");
cache_control(CACHE_ENABLE);
- gunzip();
- puts("\n");
-
-#if 0
- /* When booting from ROM may want to do something like this if the
- * boot loader doesn't.
- */
-
- /* Set up the parameters and command line */
- {
- volatile unsigned int *parambase =
- (int *) (CONFIG_MEMORY_START + 0x1000);
-
- parambase[0] = 0x1; /* MOUNT_ROOT_RDONLY */
- parambase[1] = 0x0; /* RAMDISK_FLAGS */
- parambase[2] = 0x0200; /* ORIG_ROOT_DEV */
- parambase[3] = 0x0; /* LOADER_TYPE */
- parambase[4] = 0x0; /* INITRD_START */
- parambase[5] = 0x0; /* INITRD_SIZE */
- parambase[6] = 0;
-
- strcpy((char *) ((int) parambase + 0x100),
- "console=ttySC0,38400");
- }
-#endif
-
- puts("Ok, booting the kernel.\n");
-
+ decompress(input_data, input_len, NULL, NULL, output_data, NULL, error);
cache_control(CACHE_DISABLE);
+ puts("Ok, booting the kernel.\n");
}