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Diffstat (limited to 'arch/sh/boot/compressed/misc.c')
-rw-r--r--arch/sh/boot/compressed/misc.c202
1 files changed, 50 insertions, 152 deletions
diff --git a/arch/sh/boot/compressed/misc.c b/arch/sh/boot/compressed/misc.c
index 211e9110074..95470a472d2 100644
--- a/arch/sh/boot/compressed/misc.c
+++ b/arch/sh/boot/compressed/misc.c
@@ -11,83 +11,30 @@
* Modified to use standard LinuxSH BIOS by Greg Banks 7Jul2000
*/
-#include <linux/config.h>
#include <asm/uaccess.h>
-#ifdef CONFIG_SH_STANDARD_BIOS
-#include <asm/sh_bios.h>
-#endif
+#include <asm/addrspace.h>
+#include <asm/page.h>
/*
* 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);
-static void gzip_mark(void **);
-static void gzip_release(void **);
+/* cache.c */
+#define CACHE_ENABLE 0
+#define CACHE_DISABLE 1
+int cache_control(unsigned int command);
extern char input_data[];
extern int input_len;
+static unsigned char *output;
-static long bytes_out = 0;
-static uch *output_data;
-static unsigned long output_ptr = 0;
-
-static void *malloc(int size);
-static void free(void *where);
static void error(char *m);
-static void gzip_mark(void **);
-static void gzip_release(void **);
int puts(const char *);
@@ -96,65 +43,37 @@ extern int _end;
static unsigned long free_mem_ptr;
static unsigned long free_mem_end_ptr;
-#define HEAP_SIZE 0x10000
-
-#include "../../../../lib/inflate.c"
-
-static void *malloc(int size)
-{
- void *p;
-
- if (size <0) error("Malloc error");
- if (free_mem_ptr == 0) error("Memory error");
-
- free_mem_ptr = (free_mem_ptr + 3) & ~3; /* Align */
-
- p = (void *)free_mem_ptr;
- free_mem_ptr += size;
-
- if (free_mem_ptr >= free_mem_end_ptr)
- error("Out of memory");
-
- return p;
-}
+#ifdef CONFIG_HAVE_KERNEL_BZIP2
+#define HEAP_SIZE 0x400000
+#else
+#define HEAP_SIZE 0x10000
+#endif
-static void free(void *where)
-{ /* Don't care */
-}
+#ifdef CONFIG_KERNEL_GZIP
+#include "../../../../lib/decompress_inflate.c"
+#endif
-static void gzip_mark(void **ptr)
-{
- *ptr = (void *) free_mem_ptr;
-}
+#ifdef CONFIG_KERNEL_BZIP2
+#include "../../../../lib/decompress_bunzip2.c"
+#endif
-static void gzip_release(void **ptr)
-{
- free_mem_ptr = (long) *ptr;
-}
+#ifdef CONFIG_KERNEL_LZMA
+#include "../../../../lib/decompress_unlzma.c"
+#endif
-#ifdef CONFIG_SH_STANDARD_BIOS
-size_t strlen(const char *s)
-{
- int i = 0;
+#ifdef CONFIG_KERNEL_XZ
+#include "../../../../lib/decompress_unxz.c"
+#endif
- while (*s++)
- i++;
- return i;
-}
+#ifdef CONFIG_KERNEL_LZO
+#include "../../../../lib/decompress_unlzo.c"
+#endif
int puts(const char *s)
{
- int len = strlen(s);
- sh_bios_console_write(s, len);
- return len;
-}
-#else
-int puts(const char *s)
-{
/* This should be updated to use the sh-sci routines */
return 0;
}
-#endif
void* memset(void* s, int c, size_t n)
{
@@ -175,44 +94,6 @@ 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");
@@ -222,19 +103,36 @@ static void error(char *x)
while(1); /* Halt */
}
+#ifdef CONFIG_SUPERH64
+#define stackalign 8
+#else
+#define stackalign 4
+#endif
+
#define STACK_SIZE (4096)
-long user_stack [STACK_SIZE];
-long* stack_start = &user_stack[STACK_SIZE];
+long __attribute__ ((aligned(stackalign))) user_stack[STACK_SIZE];
+long *stack_start = &user_stack[STACK_SIZE];
void decompress_kernel(void)
{
- output_data = 0;
- output_ptr = (unsigned long)&_text+0x20001000;
+ unsigned long output_addr;
+
+#ifdef CONFIG_SUPERH64
+ output_addr = (CONFIG_MEMORY_START + 0x2000);
+#else
+ output_addr = __pa((unsigned long)&_text+PAGE_SIZE);
+#if defined(CONFIG_29BIT)
+ output_addr |= P2SEG;
+#endif
+#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();
+ cache_control(CACHE_ENABLE);
+ decompress(input_data, input_len, NULL, NULL, output, NULL, error);
+ cache_control(CACHE_DISABLE);
puts("Ok, booting the kernel.\n");
}
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