import of upstream 2.4.34.4 from kernel.org
[linux-2.4.git] / include / asm-arm / arch-riscstation / uncompress.h
1 /*
2  *  linux/include/asm-arm/arch-rpc/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 *)SCREEN_START)
11
12 #include <asm/hardware.h>
13 #include <asm/io.h>
14
15 int video_num_columns, video_num_lines, video_size_row;
16 int white, bytes_per_char_h;
17 extern unsigned long con_charconvtable[256];
18
19 struct param_struct {
20         unsigned long page_size;
21         unsigned long nr_pages;
22         unsigned long ramdisk_size;
23         unsigned long mountrootrdonly;
24         unsigned long rootdev;
25         unsigned long video_num_cols;
26         unsigned long video_num_rows;
27         unsigned long video_x;
28         unsigned long video_y;
29         unsigned long memc_control_reg;
30         unsigned char sounddefault;
31         unsigned char adfsdrives;
32         unsigned char bytes_per_char_h;
33         unsigned char bytes_per_char_v;
34         unsigned long unused[256/4-11];
35 };
36
37 static const unsigned long palette_4[16] = {
38         0x00000000,
39         0x000000cc,
40         0x0000cc00,             /* Green   */
41         0x0000cccc,             /* Yellow  */
42         0x00cc0000,             /* Blue    */
43         0x00cc00cc,             /* Magenta */
44         0x00cccc00,             /* Cyan    */
45         0x00cccccc,             /* White   */
46         0x00000000,
47         0x000000ff,
48         0x0000ff00,
49         0x0000ffff,
50         0x00ff0000,
51         0x00ff00ff,
52         0x00ffff00,
53         0x00ffffff
54 };
55
56 #define palette_setpixel(p)     *(unsigned long *)(IO_START+0x00400000) = 0x10000000|((p) & 255)
57 #define palette_write(v)        *(unsigned long *)(IO_START+0x00400000) = 0x00000000|((v) & 0x00ffffff)
58
59 extern struct param_struct params;
60
61 #ifndef STANDALONE_DEBUG
62 /*
63  * This does not append a newline
64  */
65 static void puts(const char *s)
66 {
67 #if 0
68         extern void ll_write_char(char *, unsigned long);
69         int x,y;
70         unsigned char c;
71         char *ptr;
72
73         x = params.video_x;
74         y = params.video_y;
75
76         while ( ( c = *(unsigned char *)s++ ) != '\0' ) {
77                 if ( c == '\n' ) {
78                         x = 0;
79                         if ( ++y >= video_num_lines ) {
80                                 y--;
81                         }
82                 } else {
83                         ptr = VIDMEM + ((y*video_num_columns*params.bytes_per_char_v+x)*bytes_per_char_h);
84                         ll_write_char(ptr, c|(white<<16));
85                         if ( ++x >= video_num_columns ) {
86                                 x = 0;
87                                 if ( ++y >= video_num_lines ) {
88                                         y--;
89                                 }
90                         }
91                 }
92         }
93
94         params.video_x = x;
95         params.video_y = y;
96 #else
97         /* do nothing */
98 #endif
99 }
100
101 static void error(char *x);
102
103 /*
104  * Setup for decompression
105  */
106 static void arch_decomp_setup(void)
107 {
108         int i;
109
110 #if 0
111         video_num_lines = params.video_num_rows;
112         video_num_columns = params.video_num_cols;
113         bytes_per_char_h = params.bytes_per_char_h;
114         video_size_row = video_num_columns * bytes_per_char_h;
115         if (bytes_per_char_h == 4)
116                 for (i = 0; i < 256; i++)
117                         con_charconvtable[i] =
118                                 (i & 128 ? 1 << 0  : 0) |
119                                 (i & 64  ? 1 << 4  : 0) |
120                                 (i & 32  ? 1 << 8  : 0) |
121                                 (i & 16  ? 1 << 12 : 0) |
122                                 (i & 8   ? 1 << 16 : 0) |
123                                 (i & 4   ? 1 << 20 : 0) |
124                                 (i & 2   ? 1 << 24 : 0) |
125                                 (i & 1   ? 1 << 28 : 0);
126         else
127                 for (i = 0; i < 16; i++)
128                         con_charconvtable[i] =
129                                 (i & 8   ? 1 << 0  : 0) |
130                                 (i & 4   ? 1 << 8  : 0) |
131                                 (i & 2   ? 1 << 16 : 0) |
132                                 (i & 1   ? 1 << 24 : 0);
133
134
135         palette_setpixel(0);
136         if (bytes_per_char_h == 1) {
137                 palette_write (0);
138                 palette_write (0x00ffffff);
139                 for (i = 2; i < 256; i++)
140                         palette_write (0);
141                 white = 1;
142         } else {
143                 for (i = 0; i < 256; i++)
144                         palette_write (i < 16 ? palette_4[i] : 0);
145                 white = 7;
146         }
147
148         if (params.nr_pages * params.page_size < 4096*1024) error("<4M of mem\n");
149 #endif
150 }
151 #endif
152
153 /*
154  * nothing to do
155  */
156 #define arch_decomp_wdog()