Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
This commit is contained in:
Linus Torvalds
251
arch/sh64/boot/compressed/misc.c
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251
arch/sh64/boot/compressed/misc.c
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/*
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* arch/shmedia/boot/compressed/misc.c
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*
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* This is a collection of several routines from gzip-1.0.3
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* adapted for Linux.
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*
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* malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994
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*
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* Adapted for SHmedia from sh by Stuart Menefy, May 2002
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*/
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#include <linux/config.h>
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#include <asm/uaccess.h>
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/* cache.c */
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#define CACHE_ENABLE 0
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#define CACHE_DISABLE 1
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int cache_control(unsigned int command);
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/*
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* gzip declarations
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*/
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#define OF(args) args
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#define STATIC static
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#undef memset
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#undef memcpy
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#define memzero(s, n) memset ((s), 0, (n))
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typedef unsigned char uch;
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typedef unsigned short ush;
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typedef unsigned long ulg;
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#define WSIZE 0x8000 /* Window size must be at least 32k, */
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/* and a power of two */
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static uch *inbuf; /* input buffer */
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static uch window[WSIZE]; /* Sliding window buffer */
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static unsigned insize = 0; /* valid bytes in inbuf */
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static unsigned inptr = 0; /* index of next byte to be processed in inbuf */
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static unsigned outcnt = 0; /* bytes in output buffer */
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/* gzip flag byte */
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#define ASCII_FLAG 0x01 /* bit 0 set: file probably ASCII text */
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#define CONTINUATION 0x02 /* bit 1 set: continuation of multi-part gzip file */
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#define EXTRA_FIELD 0x04 /* bit 2 set: extra field present */
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#define ORIG_NAME 0x08 /* bit 3 set: original file name present */
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#define COMMENT 0x10 /* bit 4 set: file comment present */
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#define ENCRYPTED 0x20 /* bit 5 set: file is encrypted */
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#define RESERVED 0xC0 /* bit 6,7: reserved */
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#define get_byte() (inptr < insize ? inbuf[inptr++] : fill_inbuf())
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/* Diagnostic functions */
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#ifdef DEBUG
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# define Assert(cond,msg) {if(!(cond)) error(msg);}
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# define Trace(x) fprintf x
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# define Tracev(x) {if (verbose) fprintf x ;}
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# define Tracevv(x) {if (verbose>1) fprintf x ;}
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# define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
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# define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;}
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#else
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# define Assert(cond,msg)
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# define Trace(x)
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# define Tracev(x)
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# define Tracevv(x)
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# define Tracec(c,x)
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# define Tracecv(c,x)
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#endif
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static int fill_inbuf(void);
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static void flush_window(void);
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static void error(char *m);
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static void gzip_mark(void **);
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static void gzip_release(void **);
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extern char input_data[];
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extern int input_len;
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static long bytes_out = 0;
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static uch *output_data;
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static unsigned long output_ptr = 0;
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static void *malloc(int size);
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static void free(void *where);
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static void error(char *m);
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static void gzip_mark(void **);
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static void gzip_release(void **);
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static void puts(const char *);
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extern int _text; /* Defined in vmlinux.lds.S */
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extern int _end;
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static unsigned long free_mem_ptr;
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static unsigned long free_mem_end_ptr;
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#define HEAP_SIZE 0x10000
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#include "../../../../lib/inflate.c"
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static void *malloc(int size)
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{
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void *p;
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if (size < 0)
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error("Malloc error\n");
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if (free_mem_ptr == 0)
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error("Memory error\n");
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free_mem_ptr = (free_mem_ptr + 3) & ~3; /* Align */
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p = (void *) free_mem_ptr;
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free_mem_ptr += size;
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if (free_mem_ptr >= free_mem_end_ptr)
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error("\nOut of memory\n");
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return p;
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}
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static void free(void *where)
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{ /* Don't care */
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}
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static void gzip_mark(void **ptr)
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{
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*ptr = (void *) free_mem_ptr;
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}
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static void gzip_release(void **ptr)
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{
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free_mem_ptr = (long) *ptr;
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}
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void puts(const char *s)
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{
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}
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void *memset(void *s, int c, size_t n)
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{
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int i;
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char *ss = (char *) s;
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for (i = 0; i < n; i++)
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ss[i] = c;
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return s;
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}
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void *memcpy(void *__dest, __const void *__src, size_t __n)
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{
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int i;
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char *d = (char *) __dest, *s = (char *) __src;
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for (i = 0; i < __n; i++)
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d[i] = s[i];
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return __dest;
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}
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/* ===========================================================================
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* Fill the input buffer. This is called only when the buffer is empty
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* and at least one byte is really needed.
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*/
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static int fill_inbuf(void)
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{
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if (insize != 0) {
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error("ran out of input data\n");
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}
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inbuf = input_data;
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insize = input_len;
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inptr = 1;
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return inbuf[0];
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}
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/* ===========================================================================
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* Write the output window window[0..outcnt-1] and update crc and bytes_out.
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* (Used for the decompressed data only.)
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*/
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static void flush_window(void)
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{
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ulg c = crc; /* temporary variable */
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unsigned n;
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uch *in, *out, ch;
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in = window;
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out = &output_data[output_ptr];
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for (n = 0; n < outcnt; n++) {
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ch = *out++ = *in++;
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c = crc_32_tab[((int) c ^ ch) & 0xff] ^ (c >> 8);
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}
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crc = c;
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bytes_out += (ulg) outcnt;
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output_ptr += (ulg) outcnt;
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outcnt = 0;
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puts(".");
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}
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static void error(char *x)
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{
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puts("\n\n");
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puts(x);
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puts("\n\n -- System halted");
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while (1) ; /* Halt */
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}
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#define STACK_SIZE (4096)
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long __attribute__ ((aligned(8))) user_stack[STACK_SIZE];
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long *stack_start = &user_stack[STACK_SIZE];
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void decompress_kernel(void)
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{
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output_data = (uch *) (CONFIG_MEMORY_START + 0x2000);
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free_mem_ptr = (unsigned long) &_end;
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free_mem_end_ptr = free_mem_ptr + HEAP_SIZE;
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makecrc();
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puts("Uncompressing Linux... ");
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cache_control(CACHE_ENABLE);
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gunzip();
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puts("\n");
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#if 0
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/* When booting from ROM may want to do something like this if the
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* boot loader doesn't.
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*/
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/* Set up the parameters and command line */
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{
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volatile unsigned int *parambase =
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(int *) (CONFIG_MEMORY_START + 0x1000);
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parambase[0] = 0x1; /* MOUNT_ROOT_RDONLY */
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parambase[1] = 0x0; /* RAMDISK_FLAGS */
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parambase[2] = 0x0200; /* ORIG_ROOT_DEV */
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parambase[3] = 0x0; /* LOADER_TYPE */
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parambase[4] = 0x0; /* INITRD_START */
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parambase[5] = 0x0; /* INITRD_SIZE */
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parambase[6] = 0;
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strcpy((char *) ((int) parambase + 0x100),
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"console=ttySC0,38400");
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}
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#endif
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puts("Ok, booting the kernel.\n");
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cache_control(CACHE_DISABLE);
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}
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