Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 LT |
2 | /* |
3 | * arch/sh/boot/compressed/misc.c | |
4 | * | |
5 | * This is a collection of several routines from gzip-1.0.3 | |
6 | * adapted for Linux. | |
7 | * | |
8 | * malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994 | |
9 | * | |
10 | * Adapted for SH by Stuart Menefy, Aug 1999 | |
11 | * | |
12 | * Modified to use standard LinuxSH BIOS by Greg Banks 7Jul2000 | |
13 | */ | |
14 | ||
7c0f6ba6 | 15 | #include <linux/uaccess.h> |
9d4436a6 | 16 | #include <asm/addrspace.h> |
e2dfb912 | 17 | #include <asm/page.h> |
1da177e4 | 18 | |
21b86515 GU |
19 | #include "misc.h" |
20 | ||
1da177e4 LT |
21 | /* |
22 | * gzip declarations | |
23 | */ | |
24 | ||
1da177e4 LT |
25 | #define STATIC static |
26 | ||
27 | #undef memset | |
28 | #undef memcpy | |
29 | #define memzero(s, n) memset ((s), 0, (n)) | |
30 | ||
1da177e4 LT |
31 | extern char input_data[]; |
32 | extern int input_len; | |
df8ce259 | 33 | static unsigned char *output; |
1da177e4 | 34 | |
1da177e4 | 35 | static void error(char *m); |
1da177e4 LT |
36 | |
37 | int puts(const char *); | |
38 | ||
39 | extern int _text; /* Defined in vmlinux.lds.S */ | |
40 | extern int _end; | |
41 | static unsigned long free_mem_ptr; | |
42 | static unsigned long free_mem_end_ptr; | |
43 | ||
07e88e1b PM |
44 | #ifdef CONFIG_HAVE_KERNEL_BZIP2 |
45 | #define HEAP_SIZE 0x400000 | |
46 | #else | |
47 | #define HEAP_SIZE 0x10000 | |
48 | #endif | |
1da177e4 | 49 | |
df8ce259 PM |
50 | #ifdef CONFIG_KERNEL_GZIP |
51 | #include "../../../../lib/decompress_inflate.c" | |
52 | #endif | |
1da177e4 | 53 | |
07e88e1b PM |
54 | #ifdef CONFIG_KERNEL_BZIP2 |
55 | #include "../../../../lib/decompress_bunzip2.c" | |
56 | #endif | |
57 | ||
58 | #ifdef CONFIG_KERNEL_LZMA | |
59 | #include "../../../../lib/decompress_unlzma.c" | |
60 | #endif | |
61 | ||
50cfa79d PM |
62 | #ifdef CONFIG_KERNEL_XZ |
63 | #include "../../../../lib/decompress_unxz.c" | |
64 | #endif | |
65 | ||
c7b16efb PM |
66 | #ifdef CONFIG_KERNEL_LZO |
67 | #include "../../../../lib/decompress_unlzo.c" | |
68 | #endif | |
69 | ||
1da177e4 LT |
70 | int puts(const char *s) |
71 | { | |
72 | /* This should be updated to use the sh-sci routines */ | |
73 | return 0; | |
74 | } | |
1da177e4 LT |
75 | |
76 | void* memset(void* s, int c, size_t n) | |
77 | { | |
78 | int i; | |
79 | char *ss = (char*)s; | |
80 | ||
81 | for (i=0;i<n;i++) ss[i] = c; | |
82 | return s; | |
83 | } | |
84 | ||
85 | void* memcpy(void* __dest, __const void* __src, | |
86 | size_t __n) | |
87 | { | |
88 | int i; | |
89 | char *d = (char *)__dest, *s = (char *)__src; | |
90 | ||
91 | for (i=0;i<__n;i++) d[i] = s[i]; | |
92 | return __dest; | |
93 | } | |
94 | ||
1da177e4 LT |
95 | static void error(char *x) |
96 | { | |
97 | puts("\n\n"); | |
98 | puts(x); | |
99 | puts("\n\n -- System halted"); | |
100 | ||
101 | while(1); /* Halt */ | |
102 | } | |
103 | ||
7bbaf27d | 104 | const unsigned long __stack_chk_guard = 0x000a0dff; |
fb6cc4ac KC |
105 | |
106 | void __stack_chk_fail(void) | |
107 | { | |
108 | error("stack-protector: Kernel stack is corrupted\n"); | |
109 | } | |
110 | ||
b83b43ff SRV |
111 | /* Needed because vmlinux.lds.h references this */ |
112 | void ftrace_stub(void) | |
113 | { | |
114 | } | |
17b251a2 SRV |
115 | void arch_ftrace_ops_list_func(void) |
116 | { | |
117 | } | |
b83b43ff | 118 | |
b14c6d42 | 119 | #define stackalign 4 |
b14c6d42 | 120 | |
1da177e4 | 121 | #define STACK_SIZE (4096) |
b14c6d42 PM |
122 | long __attribute__ ((aligned(stackalign))) user_stack[STACK_SIZE]; |
123 | long *stack_start = &user_stack[STACK_SIZE]; | |
1da177e4 LT |
124 | |
125 | void decompress_kernel(void) | |
126 | { | |
df8ce259 PM |
127 | unsigned long output_addr; |
128 | ||
8bd642b1 | 129 | output_addr = __pa((unsigned long)&_text+PAGE_SIZE); |
d01447b3 | 130 | #if defined(CONFIG_29BIT) |
df8ce259 | 131 | output_addr |= P2SEG; |
d02b08f6 | 132 | #endif |
df8ce259 PM |
133 | |
134 | output = (unsigned char *)output_addr; | |
1da177e4 LT |
135 | free_mem_ptr = (unsigned long)&_end; |
136 | free_mem_end_ptr = free_mem_ptr + HEAP_SIZE; | |
137 | ||
1da177e4 | 138 | puts("Uncompressing Linux... "); |
2d3862d2 | 139 | __decompress(input_data, input_len, NULL, NULL, output, 0, NULL, error); |
1da177e4 LT |
140 | puts("Ok, booting the kernel.\n"); |
141 | } |