blob: 9365e89066c0b4aa423f785e23aec9d19d581af9 (
plain)
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
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2008-2009 coresystems GmbH
*
* 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.
*/
#include <console/console.h>
#include <arch/io.h>
#include <device/device.h>
#include <device/pci.h>
#include <watchdog.h>
void watchdog_off(void)
{
device_t dev;
unsigned long value, base;
/* Turn off the ICH7 watchdog. */
dev = dev_find_slot(0, PCI_DEVFN(0x1f, 0));
/* Enable I/O space. */
value = pci_read_config16(dev, 0x04);
value |= (1 << 10);
pci_write_config16(dev, 0x04, value);
/* Get TCO base. */
base = (pci_read_config32(dev, 0x40) & 0x0fffe) + 0x60;
/* Disable the watchdog timer. */
value = inw(base + 0x08);
value |= 1 << 11;
outw(value, base + 0x08);
/* Clear TCO timeout status. */
outw(0x0008, base + 0x04);
outw(0x0002, base + 0x06);
printk(BIOS_DEBUG, "ICH7 watchdog disabled\n");
}
|
