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 LT |
18 | |
19 | /* | |
20 | * gzip declarations | |
21 | */ | |
22 | ||
1da177e4 LT |
23 | #define STATIC static |
24 | ||
25 | #undef memset | |
26 | #undef memcpy | |
27 | #define memzero(s, n) memset ((s), 0, (n)) | |
28 | ||
b14c6d42 PM |
29 | /* cache.c */ |
30 | #define CACHE_ENABLE 0 | |
31 | #define CACHE_DISABLE 1 | |
32 | int cache_control(unsigned int command); | |
1da177e4 LT |
33 | |
34 | extern char input_data[]; | |
35 | extern int input_len; | |
df8ce259 | 36 | static unsigned char *output; |
1da177e4 | 37 | |
1da177e4 | 38 | static void error(char *m); |
1da177e4 LT |
39 | |
40 | int puts(const char *); | |
41 | ||
42 | extern int _text; /* Defined in vmlinux.lds.S */ | |
43 | extern int _end; | |
44 | static unsigned long free_mem_ptr; | |
45 | static unsigned long free_mem_end_ptr; | |
46 | ||
07e88e1b PM |
47 | #ifdef CONFIG_HAVE_KERNEL_BZIP2 |
48 | #define HEAP_SIZE 0x400000 | |
49 | #else | |
50 | #define HEAP_SIZE 0x10000 | |
51 | #endif | |
1da177e4 | 52 | |
df8ce259 PM |
53 | #ifdef CONFIG_KERNEL_GZIP |
54 | #include "../../../../lib/decompress_inflate.c" | |
55 | #endif | |
1da177e4 | 56 | |
07e88e1b PM |
57 | #ifdef CONFIG_KERNEL_BZIP2 |
58 | #include "../../../../lib/decompress_bunzip2.c" | |
59 | #endif | |
60 | ||
61 | #ifdef CONFIG_KERNEL_LZMA | |
62 | #include "../../../../lib/decompress_unlzma.c" | |
63 | #endif | |
64 | ||
50cfa79d PM |
65 | #ifdef CONFIG_KERNEL_XZ |
66 | #include "../../../../lib/decompress_unxz.c" | |
67 | #endif | |
68 | ||
c7b16efb PM |
69 | #ifdef CONFIG_KERNEL_LZO |
70 | #include "../../../../lib/decompress_unlzo.c" | |
71 | #endif | |
72 | ||
1da177e4 LT |
73 | int puts(const char *s) |
74 | { | |
75 | /* This should be updated to use the sh-sci routines */ | |
76 | return 0; | |
77 | } | |
1da177e4 LT |
78 | |
79 | void* memset(void* s, int c, size_t n) | |
80 | { | |
81 | int i; | |
82 | char *ss = (char*)s; | |
83 | ||
84 | for (i=0;i<n;i++) ss[i] = c; | |
85 | return s; | |
86 | } | |
87 | ||
88 | void* memcpy(void* __dest, __const void* __src, | |
89 | size_t __n) | |
90 | { | |
91 | int i; | |
92 | char *d = (char *)__dest, *s = (char *)__src; | |
93 | ||
94 | for (i=0;i<__n;i++) d[i] = s[i]; | |
95 | return __dest; | |
96 | } | |
97 | ||
1da177e4 LT |
98 | static void error(char *x) |
99 | { | |
100 | puts("\n\n"); | |
101 | puts(x); | |
102 | puts("\n\n -- System halted"); | |
103 | ||
104 | while(1); /* Halt */ | |
105 | } | |
106 | ||
b14c6d42 PM |
107 | #ifdef CONFIG_SUPERH64 |
108 | #define stackalign 8 | |
109 | #else | |
110 | #define stackalign 4 | |
111 | #endif | |
112 | ||
1da177e4 | 113 | #define STACK_SIZE (4096) |
b14c6d42 PM |
114 | long __attribute__ ((aligned(stackalign))) user_stack[STACK_SIZE]; |
115 | long *stack_start = &user_stack[STACK_SIZE]; | |
1da177e4 LT |
116 | |
117 | void decompress_kernel(void) | |
118 | { | |
df8ce259 PM |
119 | unsigned long output_addr; |
120 | ||
040f43e0 PM |
121 | #ifdef CONFIG_SUPERH64 |
122 | output_addr = (CONFIG_MEMORY_START + 0x2000); | |
123 | #else | |
8bd642b1 | 124 | output_addr = __pa((unsigned long)&_text+PAGE_SIZE); |
d01447b3 | 125 | #if defined(CONFIG_29BIT) |
df8ce259 | 126 | output_addr |= P2SEG; |
040f43e0 | 127 | #endif |
d02b08f6 | 128 | #endif |
df8ce259 PM |
129 | |
130 | output = (unsigned char *)output_addr; | |
1da177e4 LT |
131 | free_mem_ptr = (unsigned long)&_end; |
132 | free_mem_end_ptr = free_mem_ptr + HEAP_SIZE; | |
133 | ||
1da177e4 | 134 | puts("Uncompressing Linux... "); |
b14c6d42 | 135 | cache_control(CACHE_ENABLE); |
2d3862d2 | 136 | __decompress(input_data, input_len, NULL, NULL, output, 0, NULL, error); |
b14c6d42 | 137 | cache_control(CACHE_DISABLE); |
1da177e4 LT |
138 | puts("Ok, booting the kernel.\n"); |
139 | } |