Linux 3.11-rc3
[cris-mirror.git] / arch / m32r / boot / compressed / misc.c
blob28a09529f206915fd00633bf846dde48342b8b36
1 /*
2 * arch/m32r/boot/compressed/misc.c
4 * This is a collection of several routines from gzip-1.0.3
5 * adapted for Linux.
7 * malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994
9 * Adapted for SH by Stuart Menefy, Aug 1999
11 * 2003-02-12: Support M32R by Takeo Takahashi
15 * gzip declarations
17 #define STATIC static
19 #undef memset
20 #undef memcpy
21 #define memzero(s, n) memset ((s), 0, (n))
23 static void error(char *m);
25 #include "m32r_sio.c"
27 static unsigned long free_mem_ptr;
28 static unsigned long free_mem_end_ptr;
30 #ifdef CONFIG_KERNEL_BZIP2
31 void *memset(void *s, int c, size_t n)
33 char *ss = s;
35 while (n--)
36 *ss++ = c;
37 return s;
39 #endif
41 #ifdef CONFIG_KERNEL_GZIP
42 void *memcpy(void *dest, const void *src, size_t n)
44 char *d = dest;
45 const char *s = src;
46 while (n--)
47 *d++ = *s++;
49 return dest;
52 #define BOOT_HEAP_SIZE 0x10000
53 #include "../../../../lib/decompress_inflate.c"
54 #endif
56 #ifdef CONFIG_KERNEL_BZIP2
57 #define BOOT_HEAP_SIZE 0x400000
58 #include "../../../../lib/decompress_bunzip2.c"
59 #endif
61 #ifdef CONFIG_KERNEL_LZMA
62 #define BOOT_HEAP_SIZE 0x10000
63 #include "../../../../lib/decompress_unlzma.c"
64 #endif
66 static void error(char *x)
68 puts("\n\n");
69 puts(x);
70 puts("\n\n -- System halted");
72 while(1); /* Halt */
75 void
76 decompress_kernel(int mmu_on, unsigned char *zimage_data,
77 unsigned int zimage_len, unsigned long heap)
79 unsigned char *input_data = zimage_data;
80 int input_len = zimage_len;
81 unsigned char *output_data;
83 output_data = (unsigned char *)CONFIG_MEMORY_START + 0x2000
84 + (mmu_on ? 0x80000000 : 0);
85 free_mem_ptr = heap;
86 free_mem_end_ptr = free_mem_ptr + BOOT_HEAP_SIZE;
88 puts("\nDecompressing Linux... ");
89 decompress(input_data, input_len, NULL, NULL, output_data, NULL, error);
90 puts("done.\nBooting the kernel.\n");