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
|
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2008, 2009 Free Software Foundation, Inc.
*
* GRUB 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, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB 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.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_CMOS_H
#define GRUB_CMOS_H 1
#include <grub/types.h>
#if !defined (__powerpc__) && !defined (__sparc__)
#include <grub/cpu/io.h>
#include <grub/cpu/cmos.h>
#endif
#define GRUB_CMOS_INDEX_SECOND 0
#define GRUB_CMOS_INDEX_SECOND_ALARM 1
#define GRUB_CMOS_INDEX_MINUTE 2
#define GRUB_CMOS_INDEX_MINUTE_ALARM 3
#define GRUB_CMOS_INDEX_HOUR 4
#define GRUB_CMOS_INDEX_HOUR_ALARM 5
#define GRUB_CMOS_INDEX_DAY_OF_WEEK 6
#define GRUB_CMOS_INDEX_DAY_OF_MONTH 7
#define GRUB_CMOS_INDEX_MONTH 8
#define GRUB_CMOS_INDEX_YEAR 9
#define GRUB_CMOS_INDEX_STATUS_A 0xA
#define GRUB_CMOS_INDEX_STATUS_B 0xB
#define GRUB_CMOS_INDEX_STATUS_C 0xC
#define GRUB_CMOS_INDEX_STATUS_D 0xD
#define GRUB_CMOS_STATUS_B_DAYLIGHT 1
#define GRUB_CMOS_STATUS_B_24HOUR 2
#define GRUB_CMOS_STATUS_B_BINARY 4
static inline grub_uint8_t
grub_bcd_to_num (grub_uint8_t a)
{
return ((a >> 4) * 10 + (a & 0xF));
}
static inline grub_uint8_t
grub_num_to_bcd (grub_uint8_t a)
{
return (((a / 10) << 4) + (a % 10));
}
#if !defined (__powerpc__) && !defined (__sparc__)
static inline grub_err_t
grub_cmos_read (grub_uint8_t index, grub_uint8_t *val)
{
if (index & 0x80)
{
grub_outb (index & 0x7f, GRUB_CMOS_ADDR_REG_HI);
*val = grub_inb (GRUB_CMOS_DATA_REG_HI);
}
else
{
grub_outb (index & 0x7f, GRUB_CMOS_ADDR_REG);
*val = grub_inb (GRUB_CMOS_DATA_REG);
}
return GRUB_ERR_NONE;
}
static inline grub_err_t
grub_cmos_write (grub_uint8_t index, grub_uint8_t value)
{
if (index & 0x80)
{
grub_outb (index & 0x7f, GRUB_CMOS_ADDR_REG_HI);
grub_outb (value, GRUB_CMOS_DATA_REG_HI);
}
else
{
grub_outb (index & 0x7f, GRUB_CMOS_ADDR_REG);
grub_outb (value, GRUB_CMOS_DATA_REG);
}
return GRUB_ERR_NONE;
}
#else
grub_err_t grub_cmos_find_port (void);
extern volatile grub_uint8_t *grub_cmos_port;
static inline grub_err_t
grub_cmos_read (grub_uint8_t index, grub_uint8_t *val)
{
if (!grub_cmos_port)
{
grub_err_t err;
err = grub_cmos_find_port ();
if (err)
return err;
}
grub_cmos_port[((index & 0x80) >> 6) | 0] = index & 0x7f;
*val = grub_cmos_port[((index & 0x80) >> 6) | 1];
return GRUB_ERR_NONE;
}
static inline grub_err_t
grub_cmos_write (grub_uint8_t index, grub_uint8_t val)
{
if (!grub_cmos_port)
{
grub_err_t err;
err = grub_cmos_find_port ();
if (err)
return err;
}
grub_cmos_port[((index & 0x80) >> 6) | 0] = index;
grub_cmos_port[((index & 0x80) >> 6) | 1] = val;
return GRUB_ERR_NONE;
}
#endif
#endif /* GRUB_CMOS_H */
|
