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
|
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
/* File taken from the Linux xgifb driver (v3.18.5) */
#include "xgi_coreboot.h"
#include "vgatypes.h"
#include "vb_util.h"
void xgifb_reg_set(unsigned long port, u8 index, u8 data)
{
outb(index, port);
outb(data, port + 1);
}
u8 xgifb_reg_get(unsigned long port, u8 index)
{
u8 data;
outb(index, port);
data = inb(port + 1);
return data;
}
void xgifb_reg_and_or(unsigned long port, u8 index,
unsigned data_and, unsigned data_or)
{
u8 temp;
temp = xgifb_reg_get(port, index); /* XGINew_Part1Port index 02 */
temp = (temp & data_and) | data_or;
xgifb_reg_set(port, index, temp);
}
void xgifb_reg_and(unsigned long port, u8 index, unsigned data_and)
{
u8 temp;
temp = xgifb_reg_get(port, index); /* XGINew_Part1Port index 02 */
temp &= data_and;
xgifb_reg_set(port, index, temp);
}
void xgifb_reg_or(unsigned long port, u8 index, unsigned data_or)
{
u8 temp;
temp = xgifb_reg_get(port, index); /* XGINew_Part1Port index 02 */
temp |= data_or;
xgifb_reg_set(port, index, temp);
}
|
