1 /*
2 * arch/h8300/boot/compressed/misc.c
3 *
4 * This is a collection of several routines from gzip-1.0.3
5 * adapted for Linux.
6 *
7 * malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994
8 *
9 * Adapted for h8300 by Yoshinori Sato 2006
10 */
11
12 #include <asm/uaccess.h>
13
14 /*
15 * gzip declarations
16 */
17
18 #define OF(args) args
19 #define STATIC static
20
21 #undef memset
22 #undef memcpy
23 #define memzero(s, n) memset((s), (0), (n))
24
25 extern int _end;
26 static unsigned long free_mem_ptr;
27 static unsigned long free_mem_end_ptr;
28
29 extern char input_data[];
30 extern int input_len;
31 extern char output[];
32
33 #define HEAP_SIZE 0x10000
34
35 #ifdef CONFIG_KERNEL_GZIP
36 #include "../../../../lib/decompress_inflate.c"
37 #endif
38
39 #ifdef CONFIG_KERNEL_LZO
40 #include "../../../../lib/decompress_unlzo.c"
41 #endif
42
memset(void * s,int c,size_t n)43 void *memset(void *s, int c, size_t n)
44 {
45 int i;
46 char *ss = (char *)s;
47
48 for (i = 0; i < n; i++)
49 ss[i] = c;
50 return s;
51 }
52
memcpy(void * dest,const void * src,size_t n)53 void *memcpy(void *dest, const void *src, size_t n)
54 {
55 int i;
56 char *d = (char *)dest, *s = (char *)src;
57
58 for (i = 0; i < n; i++)
59 d[i] = s[i];
60 return dest;
61 }
62
error(char * x)63 static void error(char *x)
64 {
65 while (1)
66 ; /* Halt */
67 }
68
decompress_kernel(void)69 void decompress_kernel(void)
70 {
71 free_mem_ptr = (unsigned long)&_end;
72 free_mem_end_ptr = free_mem_ptr + HEAP_SIZE;
73
74 __decompress(input_data, input_len, NULL, NULL, output, 0, NULL, error);
75 }
76