blob: 1c43a0cd9bd582ad3f92eb2abf18199d281ddc9d (
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
|
/* SPDX-License-Identifier: GPL-2.0-only */
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ops.h>
#include <southbridge/intel/common/pmbase.h>
#include <southbridge/intel/common/tco.h>
#include <watchdog.h>
/*
* Disable ICH-NM10-PCH watchdog timer
*/
void watchdog_off(void)
{
unsigned int value;
struct device *dev;
/* Get LPC device. */
dev = pcidev_on_root(0x1f, 0);
value = pci_read_config16(dev, PCI_COMMAND);
/* Disable interrupt. */
value |= PCI_COMMAND_INT_DISABLE;
pci_write_config16(dev, PCI_COMMAND, value);
/* Disable the watchdog timer. */
value = read_pmbase16(PMBASE_TCO_OFFSET + TCO1_CNT);
value |= TCO_TMR_HLT;
write_pmbase16(PMBASE_TCO_OFFSET + TCO1_CNT, value);
/* Clear TCO timeout status. */
write_pmbase16(PMBASE_TCO_OFFSET + TCO1_STS, TCO_TIMEOUT);
write_pmbase16(PMBASE_TCO_OFFSET + TCO2_STS, TCO2_STS_SECOND_TO);
printk(BIOS_DEBUG, "ICH-NM10-PCH: watchdog disabled\n");
}
|
