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path: root/src/southbridge/intel/i82801ex/watchdog.c
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#include <console/console.h>
#include <watchdog.h>
#include <arch/io.h>
#include <device/device.h>
#include <device/pci.h>

void watchdog_off(void)
{
	device_t dev;
	unsigned long value,base;

	/* turn off the ICH5 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, "Watchdog ICH5 disabled\n");
}