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Diffstat (limited to 'src/mainboard/dell/s1850/watchdog.c')
-rw-r--r--src/mainboard/dell/s1850/watchdog.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/src/mainboard/dell/s1850/watchdog.c b/src/mainboard/dell/s1850/watchdog.c
new file mode 100644
index 0000000000..e22ffeef80
--- /dev/null
+++ b/src/mainboard/dell/s1850/watchdog.c
@@ -0,0 +1,57 @@
+#include <device/pnp_def.h>
+
+#define NSC_WD_DEV PNP_DEV(0x2e, 0xa)
+#define NSC_WDBASE 0x600
+#define ICH5_WDBASE 0x400
+#define ICH5_GPIOBASE 0x500
+
+static void disable_sio_watchdog(device_t dev)
+{
+#if 0
+ /* FIXME move me somewhere more appropriate */
+ pnp_set_logical_device(dev);
+ pnp_set_enable(dev, 1);
+ pnp_set_iobase(dev, PNP_IDX_IO0, NSC_WDBASE);
+ /* disable the sio watchdog */
+ outb(0, NSC_WDBASE + 0);
+ pnp_set_enable(dev, 0);
+#endif
+}
+
+static void disable_ich5_watchdog(void)
+{
+ /* FIXME move me somewhere more appropriate */
+ device_t dev;
+ unsigned long value, base;
+ dev = pci_locate_device(PCI_ID(0x8086, 0x24d0), 0);
+ if (dev == PCI_DEV_INVALID) {
+ die("Missing ich5?");
+ }
+ /* Enable I/O space */
+ value = pci_read_config16(dev, 0x04);
+ value |= (1 << 10);
+ pci_write_config16(dev, 0x04, value);
+
+ /* Set and enable acpibase */
+ pci_write_config32(dev, 0x40, ICH5_WDBASE | 1);
+ pci_write_config8(dev, 0x44, 0x10);
+ base = ICH5_WDBASE + 0x60;
+
+ /* Set bit 11 in TCO1_CNT */
+ value = inw(base + 0x08);
+ value |= 1 << 11;
+ outw(value, base + 0x08);
+
+ /* Clear TCO timeout status */
+ outw(0x0008, base + 0x04);
+ outw(0x0002, base + 0x06);
+}
+
+
+static void disable_watchdogs(void)
+{
+// disable_sio_watchdog(NSC_WD_DEV);
+ disable_ich5_watchdog();
+ print_debug("Watchdogs disabled\r\n");
+}
+