Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * linux/include/asm-arm/arch-arc/uncompress.h | |
3 | * | |
4 | * Copyright (C) 1996 Russell King | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | #define VIDMEM ((char *)0x02000000) | |
11 | ||
12 | int video_num_columns, video_num_lines, video_size_row; | |
13 | int white, bytes_per_char_h; | |
14 | extern unsigned long con_charconvtable[256]; | |
15 | ||
16 | struct param_struct { | |
17 | unsigned long page_size; | |
18 | unsigned long nr_pages; | |
19 | unsigned long ramdisk_size; | |
20 | unsigned long mountrootrdonly; | |
21 | unsigned long rootdev; | |
22 | unsigned long video_num_cols; | |
23 | unsigned long video_num_rows; | |
24 | unsigned long video_x; | |
25 | unsigned long video_y; | |
26 | unsigned long memc_control_reg; | |
27 | unsigned char sounddefault; | |
28 | unsigned char adfsdrives; | |
29 | unsigned char bytes_per_char_h; | |
30 | unsigned char bytes_per_char_v; | |
31 | unsigned long unused[256/4-11]; | |
32 | }; | |
33 | ||
34 | static struct param_struct *params = (struct param_struct *)0x0207c000; | |
35 | ||
36 | /* | |
37 | * This does not append a newline | |
38 | */ | |
39 | static void puts(const char *s) | |
40 | { | |
41 | extern void ll_write_char(char *, unsigned long); | |
42 | int x,y; | |
43 | unsigned char c; | |
44 | char *ptr; | |
45 | ||
46 | x = params->video_x; | |
47 | y = params->video_y; | |
48 | ||
49 | while ( ( c = *(unsigned char *)s++ ) != '\0' ) { | |
50 | if ( c == '\n' ) { | |
51 | x = 0; | |
52 | if ( ++y >= video_num_lines ) { | |
53 | y--; | |
54 | } | |
55 | } else { | |
56 | ptr = VIDMEM + ((y*video_num_columns*params->bytes_per_char_v+x)*bytes_per_char_h); | |
57 | ll_write_char(ptr, c|(white<<16)); | |
58 | if ( ++x >= video_num_columns ) { | |
59 | x = 0; | |
60 | if ( ++y >= video_num_lines ) { | |
61 | y--; | |
62 | } | |
63 | } | |
64 | } | |
65 | } | |
66 | ||
67 | params->video_x = x; | |
68 | params->video_y = y; | |
69 | } | |
70 | ||
71 | static void error(char *x); | |
72 | ||
73 | /* | |
74 | * Setup for decompression | |
75 | */ | |
76 | static void arch_decomp_setup(void) | |
77 | { | |
78 | int i; | |
79 | ||
80 | video_num_lines = params->video_num_rows; | |
81 | video_num_columns = params->video_num_cols; | |
82 | bytes_per_char_h = params->bytes_per_char_h; | |
83 | video_size_row = video_num_columns * bytes_per_char_h; | |
84 | if (bytes_per_char_h == 4) | |
85 | for (i = 0; i < 256; i++) | |
86 | con_charconvtable[i] = | |
87 | (i & 128 ? 1 << 0 : 0) | | |
88 | (i & 64 ? 1 << 4 : 0) | | |
89 | (i & 32 ? 1 << 8 : 0) | | |
90 | (i & 16 ? 1 << 12 : 0) | | |
91 | (i & 8 ? 1 << 16 : 0) | | |
92 | (i & 4 ? 1 << 20 : 0) | | |
93 | (i & 2 ? 1 << 24 : 0) | | |
94 | (i & 1 ? 1 << 28 : 0); | |
95 | else | |
96 | for (i = 0; i < 16; i++) | |
97 | con_charconvtable[i] = | |
98 | (i & 8 ? 1 << 0 : 0) | | |
99 | (i & 4 ? 1 << 8 : 0) | | |
100 | (i & 2 ? 1 << 16 : 0) | | |
101 | (i & 1 ? 1 << 24 : 0); | |
102 | ||
103 | white = bytes_per_char_h == 8 ? 0xfc : 7; | |
104 | ||
105 | if (params->nr_pages * params->page_size < 4096*1024) error("<4M of mem\n"); | |
106 | } | |
107 | ||
108 | /* | |
109 | * nothing to do | |
110 | */ | |
111 | #define arch_decomp_wdog() |