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
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2009 Libra Li <libra.li@technexion.com>
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifdef __PRE_RAM__
#include <arch/cpu.h>
#include "southbridge/amd/sb600/sb600.h"
#else
#include <arch/io.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include "southbridge/amd/sb600/sb600.h"
#include <delay.h>
#endif /* __PRE_RAM__ */
#include "speaker.h"
void speaker_init(uint8_t time) {
/* SB600 RRG.
* Options_0 - RW - 8 bits - [PM_Reg: 60h].
* SpkrEn, bit[5]=1b, Setting this bit will configure GPIO2 to be speaker output.
*/
#ifdef __PRE_RAM__
pmio_write(0x60, (pmio_read(0x60) | (1<<5)));
#else
pm_iowrite(0x60, (pm_ioread(0x60) | (1<<5)));
#endif /* __PRE_RAM__ */
/* SB600 RRG.
* Tmr1CntrlWord - RW - 8 bits - [IO_Reg: 43h].
* ModeSelect, bit[3:1]=011b, Square wave output.
* CmmandSelect, bit[5:4]=11b, Read/write least, and then most significant byte.
* CounterSelect, bit[7:6]=10b, Select counter 2.
*/
outb(0xb6, 0x43);
/* SB600 RRG.
* TimerCh2- RW - 8 bits - [IO_Reg: 42h].
*/
outb(time, 0x42);
}
void speaker_on_nodelay(void) {
/* SB600 RRG.
* Nmi_Status - RW - 8 bits - [IO_Reg: 61h].
* SpkrEnable, bit[0]=1b, Enable counter 2
* SpkrTmrEnable, bit[1]=1b, Speaker timer on
*/
outb(inb(0x61) | 0x03, 0x61);
}
void speaker_on_delay(void) {
speaker_on_nodelay();
mdelay(100);
}
void speaker_off_nodelay(void) {
/* SB600 RRG.
* Nmi_Status - RW - 8 bits - [IO_Reg: 61h].
* SpkrEnable, bit[0]=0b, Disable counter 2
* SpkrTmrEnable, bit[1]=0b, Speaker timer off
*/
outb(inb(0x61) & ~0x03, 0x61);
}
void speaker_off_delay(void) {
speaker_off_nodelay();
mdelay(100);
}
|
