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
|
/*
* Copyright (C) 2013 Imagination Technologies
* Author: Paul Burton <paul.burton@imgtec.com>
*
* Setup code for the FDC37M817 super I/O controller
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#define SIO_CONF_PORT 0x3f0
#define SIO_DATA_PORT 0x3f1
enum sio_conf_key {
SIOCONF_DEVNUM = 0x07,
SIOCONF_ACTIVATE = 0x30,
SIOCONF_ENTER_SETUP = 0x55,
SIOCONF_BASE_HIGH = 0x60,
SIOCONF_BASE_LOW = 0x61,
SIOCONF_PRIMARY_INT = 0x70,
SIOCONF_EXIT_SETUP = 0xaa,
SIOCONF_MODE = 0xf0,
};
static struct {
u8 key;
u8 data;
} sio_config[] = {
/* tty0 */
{ SIOCONF_DEVNUM, 0x04 },
{ SIOCONF_BASE_HIGH, 0x03 },
{ SIOCONF_BASE_LOW, 0xf8 },
{ SIOCONF_MODE, 0x02 },
{ SIOCONF_PRIMARY_INT, 0x04 },
{ SIOCONF_ACTIVATE, 0x01 },
/* tty1 */
{ SIOCONF_DEVNUM, 0x05 },
{ SIOCONF_BASE_HIGH, 0x02 },
{ SIOCONF_BASE_LOW, 0xf8 },
{ SIOCONF_MODE, 0x02 },
{ SIOCONF_PRIMARY_INT, 0x03 },
{ SIOCONF_ACTIVATE, 0x01 },
};
void malta_superio_init(void *io_base)
{
unsigned i;
/* enter config state */
writeb(SIOCONF_ENTER_SETUP, io_base + SIO_CONF_PORT);
/* configure peripherals */
for (i = 0; i < ARRAY_SIZE(sio_config); i++) {
writeb(sio_config[i].key, io_base + SIO_CONF_PORT);
writeb(sio_config[i].data, io_base + SIO_DATA_PORT);
}
/* exit config state */
writeb(SIOCONF_EXIT_SETUP, io_base + SIO_CONF_PORT);
}
|
