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
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <libpayload-config.h>
#include <libpayload.h>
#include <video_console.h>
#ifdef CONFIG_LP_GEODELX_VIDEO_CONSOLE
extern struct video_console geodelx_video_console;
#endif
#ifdef CONFIG_LP_COREBOOT_VIDEO_CONSOLE
extern struct video_console coreboot_video_console;
#endif
#ifdef CONFIG_LP_VGA_VIDEO_CONSOLE
extern struct video_console vga_video_console;
#endif
static struct video_console *console_list[] =
{
#ifdef CONFIG_LP_GEODELX_VIDEO_CONSOLE
&geodelx_video_console,
#endif
#ifdef CONFIG_LP_COREBOOT_VIDEO_CONSOLE
&coreboot_video_console,
#endif
#ifdef CONFIG_LP_VGA_VIDEO_CONSOLE
&vga_video_console,
#endif
};
static struct video_console *console;
static int cursorx;
static int cursory;
static unsigned int cursor_enabled = 1;
void video_get_rows_cols(unsigned int *rows, unsigned int *cols)
{
if (console) {
*cols = console->columns;
*rows = console->rows;
} else {
*cols = *rows = 0;
}
}
static void video_console_fixup_cursor(void)
{
if (!cursor_enabled)
return;
if (cursorx < 0)
cursorx = 0;
if (cursory < 0)
cursory = 0;
if (cursorx >= console->columns) {
cursorx = 0;
cursory++;
}
while(cursory >= console->rows) {
console->scroll_up();
cursory--;
}
if (console && console->set_cursor)
console->set_cursor(cursorx, cursory);
}
void video_console_cursor_enable(int state)
{
if (console && console->enable_cursor)
console->enable_cursor(state);
cursor_enabled = state;
if (cursor_enabled)
video_console_fixup_cursor();
}
void video_console_clear(void)
{
if (console)
console->clear();
cursorx = 0;
cursory = 0;
if (console && console->set_cursor)
console->set_cursor(cursorx, cursory);
}
void video_console_putc(u8 row, u8 col, unsigned int ch)
{
if (console)
console->putc(row, col, ch);
}
void video_console_putchar(unsigned int ch)
{
/* replace black-on-black with light-gray-on-black.
* do it here, instead of in libc/console.c
*/
if ((ch & 0xFF00) == 0) {
ch |= 0x0700;
}
switch(ch & 0xFF) {
case '\r':
cursorx = 0;
break;
case '\n':
cursorx = 0;
cursory++;
break;
case '\b':
cursorx--;
if (cursorx < 0) {
cursory--;
cursorx = console->columns;
}
break;
case '\t':
while(cursorx % 8 && cursorx < console->columns) {
if (console)
console->putc(cursory, cursorx, (ch & 0xFF00) | ' ');
cursorx++;
}
break;
default:
if (console)
console->putc(cursory, cursorx++, ch);
break;
}
video_console_fixup_cursor();
}
void video_console_get_cursor(unsigned int *x, unsigned int *y, unsigned int *en)
{
*x=0;
*y=0;
*en=0;
if (console->get_cursor)
console->get_cursor(x, y, en);
*x = cursorx;
*y = cursory;
}
void video_console_set_cursor(unsigned int x, unsigned int y)
{
cursorx = x;
cursory = y;
video_console_fixup_cursor();
}
static struct console_output_driver cons = {
.putchar = video_console_putchar
};
int video_init(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(console_list); i++) {
if (console_list[i]->init())
continue;
console = console_list[i];
if (console->get_cursor)
console->get_cursor((unsigned int*)&cursorx,
(unsigned int*)&cursory,
&cursor_enabled);
if (cursorx) {
cursorx = 0;
cursory++;
}
video_console_fixup_cursor();
return 0;
}
return 1;
}
int video_console_init(void)
{
video_init();
if (console)
console_add_output_driver(&cons);
return 0;
}
|
