98 lines
1.9 KiB
C
98 lines
1.9 KiB
C
/*
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* arch/sh/boot/compressed/misc_64.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 <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 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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static void error(char *m);
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extern char input_data[];
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extern int input_len;
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static unsigned char *output_data;
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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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#ifdef CONFIG_KERNEL_GZIP
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#include "../../../../lib/decompress_inflate.c"
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#endif
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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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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 = (unsigned char *) (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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puts("Uncompressing Linux... ");
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cache_control(CACHE_ENABLE);
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decompress(input_data, input_len, NULL, NULL, output_data, NULL, error);
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cache_control(CACHE_DISABLE);
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puts("Ok, booting the kernel.\n");
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}
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