Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * arch/m32r/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 SH by Stuart Menefy, Aug 1999 | |
10 | * | |
11 | * 2003-02-12: Support M32R by Takeo Takahashi | |
1da177e4 LT |
12 | */ |
13 | ||
1da177e4 LT |
14 | /* |
15 | * gzip declarations | |
16 | */ | |
1da177e4 LT |
17 | #define STATIC static |
18 | ||
19 | #undef memset | |
20 | #undef memcpy | |
21 | #define memzero(s, n) memset ((s), 0, (n)) | |
22 | ||
1da177e4 | 23 | static void error(char *m); |
1da177e4 | 24 | |
1da177e4 LT |
25 | #include "m32r_sio.c" |
26 | ||
1da177e4 LT |
27 | static unsigned long free_mem_ptr; |
28 | static unsigned long free_mem_end_ptr; | |
29 | ||
337214e8 | 30 | #ifdef CONFIG_KERNEL_BZIP2 |
9a75c6e5 | 31 | void *memset(void *s, int c, size_t n) |
1da177e4 | 32 | { |
337214e8 | 33 | char *ss = s; |
1da177e4 | 34 | |
337214e8 HT |
35 | while (n--) |
36 | *ss++ = c; | |
1da177e4 LT |
37 | return s; |
38 | } | |
337214e8 | 39 | #endif |
1da177e4 | 40 | |
337214e8 | 41 | #ifdef CONFIG_KERNEL_GZIP |
a8abbca6 GU |
42 | void *memcpy(void *dest, const void *src, size_t n) |
43 | { | |
44 | char *d = dest; | |
45 | const char *s = src; | |
46 | while (n--) | |
47 | *d++ = *s++; | |
48 | ||
49 | return dest; | |
50 | } | |
51 | ||
337214e8 HT |
52 | #define BOOT_HEAP_SIZE 0x10000 |
53 | #include "../../../../lib/decompress_inflate.c" | |
54 | #endif | |
1da177e4 | 55 | |
337214e8 HT |
56 | #ifdef CONFIG_KERNEL_BZIP2 |
57 | #define BOOT_HEAP_SIZE 0x400000 | |
58 | #include "../../../../lib/decompress_bunzip2.c" | |
59 | #endif | |
1da177e4 | 60 | |
337214e8 HT |
61 | #ifdef CONFIG_KERNEL_LZMA |
62 | #define BOOT_HEAP_SIZE 0x10000 | |
63 | #include "../../../../lib/decompress_unlzma.c" | |
64 | #endif | |
1da177e4 LT |
65 | |
66 | static void error(char *x) | |
67 | { | |
68 | puts("\n\n"); | |
69 | puts(x); | |
70 | puts("\n\n -- System halted"); | |
71 | ||
72 | while(1); /* Halt */ | |
73 | } | |
74 | ||
1da177e4 LT |
75 | void |
76 | decompress_kernel(int mmu_on, unsigned char *zimage_data, | |
77 | unsigned int zimage_len, unsigned long heap) | |
78 | { | |
337214e8 HT |
79 | unsigned char *input_data = zimage_data; |
80 | int input_len = zimage_len; | |
81 | unsigned char *output_data; | |
82 | ||
1da177e4 LT |
83 | output_data = (unsigned char *)CONFIG_MEMORY_START + 0x2000 |
84 | + (mmu_on ? 0x80000000 : 0); | |
85 | free_mem_ptr = heap; | |
337214e8 | 86 | free_mem_end_ptr = free_mem_ptr + BOOT_HEAP_SIZE; |
1da177e4 | 87 | |
337214e8 HT |
88 | puts("\nDecompressing Linux... "); |
89 | decompress(input_data, input_len, NULL, NULL, output_data, NULL, error); | |
90 | puts("done.\nBooting the kernel.\n"); | |
1da177e4 | 91 | } |