1 files changed, 57 insertions, 0 deletions
diff --git a/src/southbridge/intel/i82801dbm/i82801dbm.c b/src/southbridge/intel/i82801dbm/i82801dbm.c
new file mode 100644
index 0000000000..d89a309981
--- /dev/null
+++ b/src/southbridge/intel/i82801dbm/i82801dbm.c
@@ -0,0 +1,57 @@
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/chip.h>
+#include "i82801dbm.h"
+
+void i82801dbm_enable(device_t dev)
+{
+	device_t lpc_dev;
+	unsigned int index;
+	uint16_t reg_old, reg;
+
+//	all 82801dbm device ares in bus 0
+	unsigned int devfn;
+	devfn = PCI_DEVFN(0x1f, 0); // lpc
+	lpc_dev = dev_find_slot(0, devfn); // 0
+	if (!lpc_dev ) {
+		return;
+	}
+#if 0
+	if ((lpc_dev->vendor != PCI_VENDOR_ID_INTEL) ||
+	    (lpc_dev->device != PCI_DEVICE_ID_INTEL_82801ER_1F0)) {
+		uint32_t id;
+		id = pci_read_config32(lpc_dev, PCI_VENDOR_ID);
+		if (id != (PCI_VENDOR_ID_INTEL | (PCI_DEVICE_ID_INTEL_82801ER_1F0 << 16))) {
+			return;
+		}
+	}
+#endif
+
+	index = (dev->path.u.pci.devfn & 7);
+        if((dev->path.u.pci.devfn & ~0x7)==devfn) { // D=0x1f
+                if(index==0){   //1f0   
+                        index = 14;
+                } 
+        } else { // D=0x1d
+                index += 8;
+        }
+
+	reg_old = pci_read_config16(lpc_dev, FUNC_DIS);
+	reg = reg_old;
+	reg &= ~(1<<index); // enable it
+	if (!dev->enabled) {
+		reg |= (1<<index);  // disable it
+	}
+	if (reg != reg_old) {
+		pci_write_config16(lpc_dev, FUNC_DIS, reg);
+	}
+	reg = pci_read_config16(lpc_dev, FUNC_DIS);
+
+}
+
+struct chip_control southbridge_intel_i82801dbm_control = {
+	.name       = "Intel 82801dbm Southbridge",
+	.enable_dev = i82801dbm_enable,
+};