1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
/*
* linux/include/asm-arm/arch-rpc/uncompress.h
*
* Copyright (C) 1996 Russell King
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#define VIDMEM ((char *)SCREEN_START)
#include <asm/arch/hardware.h>
#include <asm/io.h>
#include <asm/setup.h>
#include <asm/page.h>
int video_size_row;
unsigned char bytes_per_char_h;
extern unsigned long con_charconvtable[256];
struct param_struct {
unsigned long page_size;
unsigned long nr_pages;
unsigned long ramdisk_size;
unsigned long mountrootrdonly;
unsigned long rootdev;
unsigned long video_num_cols;
unsigned long video_num_rows;
unsigned long video_x;
unsigned long video_y;
unsigned long memc_control_reg;
unsigned char sounddefault;
unsigned char adfsdrives;
unsigned char bytes_per_char_h;
unsigned char bytes_per_char_v;
unsigned long unused[256/4-11];
};
static const unsigned long palette_4[16] = {
0x00000000,
0x000000cc,
0x0000cc00, /* Green */
0x0000cccc, /* Yellow */
0x00cc0000, /* Blue */
0x00cc00cc, /* Magenta */
0x00cccc00, /* Cyan */
0x00cccccc, /* White */
0x00000000,
0x000000ff,
0x0000ff00,
0x0000ffff,
0x00ff0000,
0x00ff00ff,
0x00ffff00,
0x00ffffff
};
#define palette_setpixel(p) *(unsigned long *)(IO_START+0x00400000) = 0x10000000|((p) & 255)
#define palette_write(v) *(unsigned long *)(IO_START+0x00400000) = 0x00000000|((v) & 0x00ffffff)
/*
* params_phys is a linker defined symbol - see
* arch/arm/boot/compressed/Makefile
*/
extern __attribute__((pure)) struct param_struct *params(void);
#define params (params())
#ifndef STANDALONE_DEBUG
static unsigned long video_num_cols;
static unsigned long video_num_rows;
static unsigned long video_x;
static unsigned long video_y;
static unsigned char bytes_per_char_v;
static int white;
/*
* This does not append a newline
*/
static void putc(int c)
{
extern void ll_write_char(char *, char c, char white);
int x,y;
char *ptr;
x = video_x;
y = video_y;
if (c == '\n') {
if (++y >= video_num_rows)
y--;
} else if (c == '\r') {
x = 0;
} else {
ptr = VIDMEM + ((y*video_num_cols*bytes_per_char_v+x)*bytes_per_char_h);
ll_write_char(ptr, c, white);
if (++x >= video_num_cols) {
x = 0;
if ( ++y >= video_num_rows ) {
y--;
}
}
}
video_x = x;
video_y = y;
}
static inline void flush(void)
{
}
static void error(char *x);
/*
* Setup for decompression
*/
static void arch_decomp_setup(void)
{
int i;
struct tag *t = (struct tag *)params;
unsigned int nr_pages = 0, page_size = PAGE_SIZE;
if (t->hdr.tag == ATAG_CORE)
{
for (; t->hdr.size; t = tag_next(t))
{
if (t->hdr.tag == ATAG_VIDEOTEXT)
{
video_num_rows = t->u.videotext.video_lines;
video_num_cols = t->u.videotext.video_cols;
bytes_per_char_h = t->u.videotext.video_points;
bytes_per_char_v = t->u.videotext.video_points;
video_x = t->u.videotext.x;
video_y = t->u.videotext.y;
}
if (t->hdr.tag == ATAG_MEM)
{
page_size = PAGE_SIZE;
nr_pages += (t->u.mem.size / PAGE_SIZE);
}
}
}
else
{
nr_pages = params->nr_pages;
page_size = params->page_size;
video_num_rows = params->video_num_rows;
video_num_cols = params->video_num_cols;
video_x = params->video_x;
video_y = params->video_y;
bytes_per_char_h = params->bytes_per_char_h;
bytes_per_char_v = params->bytes_per_char_v;
}
video_size_row = video_num_cols * bytes_per_char_h;
if (bytes_per_char_h == 4)
for (i = 0; i < 256; i++)
con_charconvtable[i] =
(i & 128 ? 1 << 0 : 0) |
(i & 64 ? 1 << 4 : 0) |
(i & 32 ? 1 << 8 : 0) |
(i & 16 ? 1 << 12 : 0) |
(i & 8 ? 1 << 16 : 0) |
(i & 4 ? 1 << 20 : 0) |
(i & 2 ? 1 << 24 : 0) |
(i & 1 ? 1 << 28 : 0);
else
for (i = 0; i < 16; i++)
con_charconvtable[i] =
(i & 8 ? 1 << 0 : 0) |
(i & 4 ? 1 << 8 : 0) |
(i & 2 ? 1 << 16 : 0) |
(i & 1 ? 1 << 24 : 0);
palette_setpixel(0);
if (bytes_per_char_h == 1) {
palette_write (0);
palette_write (0x00ffffff);
for (i = 2; i < 256; i++)
palette_write (0);
white = 1;
} else {
for (i = 0; i < 256; i++)
palette_write (i < 16 ? palette_4[i] : 0);
white = 7;
}
if (nr_pages * page_size < 4096*1024) error("<4M of mem\n");
}
#endif
/*
* nothing to do
*/
#define arch_decomp_wdog()
|
