projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 70fac51f G |
1 | /* |
| 2 | * linux/arch/unicore32/boot/compressed/misc.c | |
| 3 | * | |
| 4 | * Code specific to PKUnity SoC and UniCore ISA | |
| 5 | * | |
| 6 | * Copyright (C) 2001-2010 GUAN Xue-tao | |
| 7 | * | |
| 8 | * This program is free software; you can redistribute it and/or modify | |
| 9 | * it under the terms of the GNU General Public License version 2 as | |
| 10 | * published by the Free Software Foundation. | |
| 11 | */ | |
| 12 | ||
| 13 | #include <asm/unaligned.h> | |
| 14 | #include <mach/uncompress.h> | |
| 15 | ||
| 16 | /* | |
| 17 | * gzip delarations | |
| 18 | */ | |
| 19 | unsigned char *output_data; | |
| 20 | unsigned long output_ptr; | |
| 21 | ||
| 22 | unsigned int free_mem_ptr; | |
| 23 | unsigned int free_mem_end_ptr; | |
| 24 | ||
| 25 | #define STATIC static | |
| 26 | #define STATIC_RW_DATA /* non-static please */ | |
| 27 | ||
| 28 | /* | |
| 29 | * arch-dependent implementations | |
| 30 | */ | |
| 31 | #ifndef ARCH_HAVE_DECOMP_ERROR | |
| 32 | #define arch_decomp_error(x) | |
| 33 | #endif | |
| 34 | ||
| 35 | #ifndef ARCH_HAVE_DECOMP_SETUP | |
| 36 | #define arch_decomp_setup() | |
| 37 | #endif | |
| 38 | ||
| 39 | #ifndef ARCH_HAVE_DECOMP_PUTS | |
| 40 | #define arch_decomp_puts(p) | |
| 41 | #endif | |
| 42 | ||
| 43 | void *memcpy(void *dest, const void *src, size_t n) | |
| 44 | { | |
| 45 | int i = 0; | |
| 46 | unsigned char *d = (unsigned char *)dest, *s = (unsigned char *)src; | |
| 47 | ||
| 48 | for (i = n >> 3; i > 0; i--) { | |
| 49 | *d++ = *s++; | |
| 50 | *d++ = *s++; | |
| 51 | *d++ = *s++; | |
| 52 | *d++ = *s++; | |
| 53 | *d++ = *s++; | |
| 54 | *d++ = *s++; | |
| 55 | *d++ = *s++; | |
| 56 | *d++ = *s++; | |
| 57 | } | |
| 58 | ||
| 59 | if (n & 1 << 2) { | |
| 60 | *d++ = *s++; | |
| 61 | *d++ = *s++; | |
| 62 | *d++ = *s++; | |
| 63 | *d++ = *s++; | |
| 64 | } | |
| 65 | ||
| 66 | if (n & 1 << 1) { | |
| 67 | *d++ = *s++; | |
| 68 | *d++ = *s++; | |
| 69 | } | |
| 70 | ||
| 71 | if (n & 1) | |
| 72 | *d++ = *s++; | |
| 73 | ||
| 74 | return dest; | |
| 75 | } | |
| 76 | ||
| 77 | void error(char *x) | |
| 78 | { | |
| 79 | arch_decomp_puts("\n\n"); | |
| 80 | arch_decomp_puts(x); | |
| 81 | arch_decomp_puts("\n\n -- System halted"); | |
| 82 | ||
| 83 | arch_decomp_error(x); | |
| 84 | ||
| 85 | for (;;) | |
| 86 | ; /* Halt */ | |
| 87 | } | |
| 88 | ||
| 89 | /* Heap size should be adjusted for different decompress method */ | |
| 90 | #ifdef CONFIG_KERNEL_GZIP | |
| 91 | #include "../../../../lib/decompress_inflate.c" | |
| 92 | #endif | |
| 93 | ||
| 94 | #ifdef CONFIG_KERNEL_BZIP2 | |
| 95 | #include "../../../../lib/decompress_bunzip2.c" | |
| 96 | #endif | |
| 97 | ||
| 98 | #ifdef CONFIG_KERNEL_LZO | |
| 99 | #include "../../../../lib/decompress_unlzo.c" | |
| 100 | #endif | |
| 101 | ||
| 102 | #ifdef CONFIG_KERNEL_LZMA | |
| 103 | #include "../../../../lib/decompress_unlzma.c" | |
| 104 | #endif | |
| 105 | ||
| 106 | unsigned long decompress_kernel(unsigned long output_start, | |
| 107 | unsigned long free_mem_ptr_p, | |
| 108 | unsigned long free_mem_ptr_end_p) | |
| 109 | { | |
| 110 | unsigned char *tmp; | |
| 111 | ||
| 112 | output_data = (unsigned char *)output_start; | |
| 113 | free_mem_ptr = free_mem_ptr_p; | |
| 114 | free_mem_end_ptr = free_mem_ptr_end_p; | |
| 115 | ||
| 116 | arch_decomp_setup(); | |
| 117 | ||
| 118 | tmp = (unsigned char *) (((unsigned long)input_data_end) - 4); | |
| 119 | output_ptr = get_unaligned_le32(tmp); | |
| 120 | ||
| 121 | arch_decomp_puts("Uncompressing Linux..."); | |
| 2d3862d2 YL |
122 | __decompress(input_data, input_data_end - input_data, NULL, NULL, |
| 123 | output_data, 0, NULL, error); | |
| 70fac51f G |
124 | arch_decomp_puts(" done, booting the kernel.\n"); |
| 125 | return output_ptr; | |
| 126 | } |