Loading...
1/*
2 * Copyright 2001 MontaVista Software Inc.
3 * Author: Matt Porter <mporter@mvista.com>
4 *
5 * Copyright (C) 2009 Lemote, Inc.
6 * Author: Wu Zhangjin <wuzhangjin@gmail.com>
7 *
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
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
19/*
20 * These two variables specify the free mem region
21 * that can be used for temporary malloc area
22 */
23unsigned long free_mem_ptr;
24unsigned long free_mem_end_ptr;
25
26/* The linker tells us where the image is. */
27extern unsigned char __image_begin, __image_end;
28
29/* debug interfaces */
30extern void puts(const char *s);
31extern void puthex(unsigned long long val);
32
33void 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
46#ifdef CONFIG_KERNEL_GZIP
47void *memcpy(void *dest, const void *src, size_t n)
48{
49 int i;
50 const char *s = src;
51 char *d = dest;
52
53 for (i = 0; i < n; i++)
54 d[i] = s[i];
55 return dest;
56}
57#include "../../../../lib/decompress_inflate.c"
58#endif
59
60#ifdef CONFIG_KERNEL_BZIP2
61void *memset(void *s, int c, size_t n)
62{
63 int i;
64 char *ss = s;
65
66 for (i = 0; i < n; i++)
67 ss[i] = c;
68 return s;
69}
70#include "../../../../lib/decompress_bunzip2.c"
71#endif
72
73#ifdef CONFIG_KERNEL_LZMA
74#include "../../../../lib/decompress_unlzma.c"
75#endif
76
77#ifdef CONFIG_KERNEL_LZO
78#include "../../../../lib/decompress_unlzo.c"
79#endif
80
81void decompress_kernel(unsigned long boot_heap_start)
82{
83 unsigned long zimage_start, zimage_size;
84
85 zimage_start = (unsigned long)(&__image_begin);
86 zimage_size = (unsigned long)(&__image_end) -
87 (unsigned long)(&__image_begin);
88
89 puts("zimage at: ");
90 puthex(zimage_start);
91 puts(" ");
92 puthex(zimage_size + zimage_start);
93 puts("\n");
94
95 /* This area are prepared for mallocing when decompressing */
96 free_mem_ptr = boot_heap_start;
97 free_mem_end_ptr = boot_heap_start + BOOT_HEAP_SIZE;
98
99 /* Display standard Linux/MIPS boot prompt */
100 puts("Uncompressing Linux at load address ");
101 puthex(VMLINUX_LOAD_ADDRESS_ULL);
102 puts("\n");
103
104 /* Decompress the kernel with according algorithm */
105 decompress((char *)zimage_start, zimage_size, 0, 0,
106 (void *)VMLINUX_LOAD_ADDRESS_ULL, 0, error);
107
108 /* FIXME: should we flush cache here? */
109 puts("Now, booting the kernel...\n");
110}
1/*
2 * Copyright 2001 MontaVista Software Inc.
3 * Author: Matt Porter <mporter@mvista.com>
4 *
5 * Copyright (C) 2009 Lemote, Inc.
6 * Author: Wu Zhangjin <wuzhangjin@gmail.com>
7 *
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
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
19/*
20 * These two variables specify the free mem region
21 * that can be used for temporary malloc area
22 */
23unsigned long free_mem_ptr;
24unsigned long free_mem_end_ptr;
25
26/* The linker tells us where the image is. */
27extern unsigned char __image_begin, __image_end;
28
29/* debug interfaces */
30extern void puts(const char *s);
31extern void puthex(unsigned long long val);
32
33void 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
46#ifdef CONFIG_KERNEL_GZIP
47#include "../../../../lib/decompress_inflate.c"
48#endif
49
50#ifdef CONFIG_KERNEL_BZIP2
51#include "../../../../lib/decompress_bunzip2.c"
52#endif
53
54#ifdef CONFIG_KERNEL_LZ4
55#include "../../../../lib/decompress_unlz4.c"
56#endif
57
58#ifdef CONFIG_KERNEL_LZMA
59#include "../../../../lib/decompress_unlzma.c"
60#endif
61
62#ifdef CONFIG_KERNEL_LZO
63#include "../../../../lib/decompress_unlzo.c"
64#endif
65
66#ifdef CONFIG_KERNEL_XZ
67#include "../../../../lib/decompress_unxz.c"
68#endif
69
70void decompress_kernel(unsigned long boot_heap_start)
71{
72 unsigned long zimage_start, zimage_size;
73
74 zimage_start = (unsigned long)(&__image_begin);
75 zimage_size = (unsigned long)(&__image_end) -
76 (unsigned long)(&__image_begin);
77
78 puts("zimage at: ");
79 puthex(zimage_start);
80 puts(" ");
81 puthex(zimage_size + zimage_start);
82 puts("\n");
83
84 /* This area are prepared for mallocing when decompressing */
85 free_mem_ptr = boot_heap_start;
86 free_mem_end_ptr = boot_heap_start + BOOT_HEAP_SIZE;
87
88 /* Display standard Linux/MIPS boot prompt */
89 puts("Uncompressing Linux at load address ");
90 puthex(VMLINUX_LOAD_ADDRESS_ULL);
91 puts("\n");
92
93 /* Decompress the kernel with according algorithm */
94 decompress((char *)zimage_start, zimage_size, 0, 0,
95 (void *)VMLINUX_LOAD_ADDRESS_ULL, 0, error);
96
97 /* FIXME: should we flush cache here? */
98 puts("Now, booting the kernel...\n");
99}