adding support for dell 1850

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2054 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

src/mainboard/dell/s1850/reset.c

@@ -0,0 +1,40 @@
+#include <arch/io.h>
+#include <device/pci_def.h>
+#include <device/pci_ids.h>
+#ifndef __ROMCC__
+#include <device/device.h>
+#define PCI_ID(VENDOR_ID, DEVICE_ID) \
+	((((DEVICE_ID) & 0xFFFF) << 16) | ((VENDOR_ID) & 0xFFFF))
+#define PCI_DEV_INVALID 0
+
+static inline device_t pci_locate_device(unsigned pci_id, device_t from)
+{
+	return dev_find_device(pci_id >> 16, pci_id & 0xffff, from);
+}
+#endif
+
+void soft_reset(void)
+{
+        outb(0x04, 0xcf9);
+}
+void hard_reset(void)
+{
+        outb(0x02, 0xcf9);
+        outb(0x06, 0xcf9);
+}
+void full_reset(void)
+{
+	device_t dev;
+	/* Enable power on after power fail... */
+	dev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801ER_ISA), 0);
+	if (dev != PCI_DEV_INVALID) {
+		unsigned byte;
+		byte = pci_read_config8(dev, 0xa4);
+		byte &= 0xfe;
+		pci_write_config8(dev, 0xa4, byte);
+		
+	}
+        outb(0x0e, 0xcf9);
+}
+
+