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v4.6
  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#include <linux/string.h>
 17
 18#include <asm/addrspace.h>
 19
 20/*
 21 * These two variables specify the free mem region
 22 * that can be used for temporary malloc area
 23 */
 24unsigned long free_mem_ptr;
 25unsigned long free_mem_end_ptr;
 26
 27/* The linker tells us where the image is. */
 28extern unsigned char __image_begin, __image_end;
 29
 30/* debug interfaces  */
 31#ifdef CONFIG_DEBUG_ZBOOT
 32extern void puts(const char *s);
 33extern void puthex(unsigned long long val);
 34#else
 35#define puts(s) do {} while (0)
 36#define puthex(val) do {} while (0)
 37#endif
 38
 39void error(char *x)
 40{
 41	puts("\n\n");
 42	puts(x);
 43	puts("\n\n -- System halted");
 44
 45	while (1)
 46		;	/* Halt */
 47}
 48
 49/* activate the code for pre-boot environment */
 50#define STATIC static
 51
 52#ifdef CONFIG_KERNEL_GZIP
 53#include "../../../../lib/decompress_inflate.c"
 54#endif
 55
 56#ifdef CONFIG_KERNEL_BZIP2
 57#include "../../../../lib/decompress_bunzip2.c"
 58#endif
 59
 60#ifdef CONFIG_KERNEL_LZ4
 61#include "../../../../lib/decompress_unlz4.c"
 62#endif
 63
 64#ifdef CONFIG_KERNEL_LZMA
 65#include "../../../../lib/decompress_unlzma.c"
 66#endif
 67
 68#ifdef CONFIG_KERNEL_LZO
 69#include "../../../../lib/decompress_unlzo.c"
 70#endif
 71
 72#ifdef CONFIG_KERNEL_XZ
 73#include "../../../../lib/decompress_unxz.c"
 74#endif
 75
 76unsigned long __stack_chk_guard;
 77
 78void __stack_chk_guard_setup(void)
 79{
 80	__stack_chk_guard = 0x000a0dff;
 81}
 82
 83void __stack_chk_fail(void)
 84{
 85	error("stack-protector: Kernel stack is corrupted\n");
 86}
 87
 88void decompress_kernel(unsigned long boot_heap_start)
 89{
 90	unsigned long zimage_start, zimage_size;
 91
 92	__stack_chk_guard_setup();
 93
 94	zimage_start = (unsigned long)(&__image_begin);
 95	zimage_size = (unsigned long)(&__image_end) -
 96	    (unsigned long)(&__image_begin);
 97
 98	puts("zimage at:     ");
 99	puthex(zimage_start);
100	puts(" ");
101	puthex(zimage_size + zimage_start);
102	puts("\n");
103
104	/* This area are prepared for mallocing when decompressing */
105	free_mem_ptr = boot_heap_start;
106	free_mem_end_ptr = boot_heap_start + BOOT_HEAP_SIZE;
107
108	/* Display standard Linux/MIPS boot prompt */
109	puts("Uncompressing Linux at load address ");
110	puthex(VMLINUX_LOAD_ADDRESS_ULL);
111	puts("\n");
112
113	/* Decompress the kernel with according algorithm */
114	__decompress((char *)zimage_start, zimage_size, 0, 0,
115		   (void *)VMLINUX_LOAD_ADDRESS_ULL, 0, 0, error);
116
117	/* FIXME: should we flush cache here? */
118	puts("Now, booting the kernel...\n");
119}
v3.15
 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}