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Diffstat (limited to 'src/southbridge/intel/i82801ex/watchdog.c')
-rw-r--r--src/southbridge/intel/i82801ex/watchdog.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/src/southbridge/intel/i82801ex/watchdog.c b/src/southbridge/intel/i82801ex/watchdog.c
new file mode 100644
index 0000000000..26f6644763
--- /dev/null
+++ b/src/southbridge/intel/i82801ex/watchdog.c
@@ -0,0 +1,29 @@
+#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");
+}
+