projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1b93b3c3 | 1 | /* |
| 1b93b3c3 | 2 | * Copyright 2001 MontaVista Software Inc. |
| 1e1a77d6 | 3 | * Author: Matt Porter <mporter@mvista.com> |
| 1b93b3c3 | 4 | * |
| f7a904df WZ |
5 | * Copyright (C) 2009 Lemote, Inc. |
| 6 | * Author: Wu Zhangjin <wuzhangjin@gmail.com> | |
| 1b93b3c3 | 7 | * |
| 70342287 RB |
8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of the GNU General Public License as published by the | |
| 1b93b3c3 WZ |
10 | * Free Software Foundation; either version 2 of the License, or (at your |
| 11 | * option) any later version. | |
| 12 | */ | |
| 13 | ||
| 14 | #include <linux/types.h> | |
| 15 | #include <linux/kernel.h> | |
| 16 | ||
| 17 | #include <asm/addrspace.h> | |
| 18 | ||
| 1e1a77d6 WZ |
19 | /* |
| 20 | * These two variables specify the free mem region | |
| 1b93b3c3 WZ |
21 | * that can be used for temporary malloc area |
| 22 | */ | |
| 23 | unsigned long free_mem_ptr; | |
| 24 | unsigned long free_mem_end_ptr; | |
| 1b93b3c3 WZ |
25 | |
| 26 | /* The linker tells us where the image is. */ | |
| 27 | extern unsigned char __image_begin, __image_end; | |
| 1b93b3c3 WZ |
28 | |
| 29 | /* debug interfaces */ | |
| 30 | extern void puts(const char *s); | |
| 31 | extern void puthex(unsigned long long val); | |
| 32 | ||
| 33 | void error(char *x) | |
| 34 | { | |
| 35 | puts("\n\n"); | |
| 36 | puts(x); | |
| 37 | puts("\n\n -- System halted"); | |
| 38 | ||
| 39 | while (1) | |
| 40 | ; /* Halt */ | |
| 41 | } | |
| 42 | ||
| 43 | /* activate the code for pre-boot environment */ | |
| 44 | #define STATIC static | |
| 45 | ||
| 4e23eb63 | 46 | #ifdef CONFIG_KERNEL_GZIP |
| 1b93b3c3 WZ |
47 | #include "../../../../lib/decompress_inflate.c" |
| 48 | #endif | |
| 49 | ||
| 50 | #ifdef CONFIG_KERNEL_BZIP2 | |
| 1b93b3c3 WZ |
51 | #include "../../../../lib/decompress_bunzip2.c" |
| 52 | #endif | |
| 53 | ||
| 31c4867d FF |
54 | #ifdef CONFIG_KERNEL_LZ4 |
| 55 | #include "../../../../lib/decompress_unlz4.c" | |
| 56 | #endif | |
| 57 | ||
| 1b93b3c3 WZ |
58 | #ifdef CONFIG_KERNEL_LZMA |
| 59 | #include "../../../../lib/decompress_unlzma.c" | |
| 60 | #endif | |
| 61 | ||
| fe1d45e0 WZ |
62 | #ifdef CONFIG_KERNEL_LZO |
| 63 | #include "../../../../lib/decompress_unlzo.c" | |
| 64 | #endif | |
| 65 | ||
| 4e23eb63 FF |
66 | #ifdef CONFIG_KERNEL_XZ |
| 67 | #include "../../../../lib/decompress_unxz.c" | |
| 68 | #endif | |
| 69 | ||
| 1b93b3c3 WZ |
70 | void decompress_kernel(unsigned long boot_heap_start) |
| 71 | { | |
| 1e1a77d6 WZ |
72 | unsigned long zimage_start, zimage_size; |
| 73 | ||
| 74 | zimage_start = (unsigned long)(&__image_begin); | |
| 1b93b3c3 WZ |
75 | zimage_size = (unsigned long)(&__image_end) - |
| 76 | (unsigned long)(&__image_begin); | |
| 77 | ||
| 1b93b3c3 | 78 | puts("zimage at: "); |
| 1e1a77d6 | 79 | puthex(zimage_start); |
| 1b93b3c3 | 80 | puts(" "); |
| 1e1a77d6 | 81 | puthex(zimage_size + zimage_start); |
| 1b93b3c3 WZ |
82 | puts("\n"); |
| 83 | ||
| 1e1a77d6 | 84 | /* This area are prepared for mallocing when decompressing */ |
| 1b93b3c3 WZ |
85 | free_mem_ptr = boot_heap_start; |
| 86 | free_mem_end_ptr = boot_heap_start + BOOT_HEAP_SIZE; | |
| 87 | ||
| 1e1a77d6 | 88 | /* Display standard Linux/MIPS boot prompt */ |
| 1b93b3c3 WZ |
89 | puts("Uncompressing Linux at load address "); |
| 90 | puthex(VMLINUX_LOAD_ADDRESS_ULL); | |
| 91 | puts("\n"); | |
| 1e1a77d6 | 92 | |
| 1b93b3c3 | 93 | /* Decompress the kernel with according algorithm */ |
| 1e1a77d6 | 94 | decompress((char *)zimage_start, zimage_size, 0, 0, |
| 1b93b3c3 | 95 | (void *)VMLINUX_LOAD_ADDRESS_ULL, 0, error); |
| 1e1a77d6 WZ |
96 | |
| 97 | /* FIXME: should we flush cache here? */ | |
| 1b93b3c3 WZ |
98 | puts("Now, booting the kernel...\n"); |
| 99 | } |