diff --git a/src/northbridge/intel/sandybridge/pei_data.h b/src/northbridge/intel/sandybridge/pei_data.h
index 8c907c1..fb56873 100644
--- a/src/northbridge/intel/sandybridge/pei_data.h
+++ b/src/northbridge/intel/sandybridge/pei_data.h
@@ -30,8 +30,16 @@
 #ifndef PEI_DATA_H
 #define PEI_DATA_H
 
+typedef struct {
+	uint16_t mode;                // 0: Disable, 1: Enable, 2: Auto, 3: Smart Auto
+	uint16_t hs_port_switch_mask; // 4 bit mask, 1: switchable, 0: not switchable
+	uint16_t preboot_support;     // 0: No xHCI preOS driver, 1: xHCI preOS driver
+	uint16_t xhci_streams;        // 0: Disable, 1: Enable
+} pch_usb3_controller_settings;
+
 typedef void (*tx_byte_func)(unsigned char byte);
-#define PEI_VERSION 4
+#define PEI_VERSION 5
+
 struct pei_data
 {
 	uint32_t pei_version;
@@ -92,6 +100,8 @@
 	 *   < 0x150 = Setting 3 (back panel, 13-15in, higest tx amplitude)
 	 */
 	uint16_t usb_port_config[16][3];
+	/* See the usb3 struct above for details */
+	pch_usb3_controller_settings usb3;
 	/* SPD data array for onboard RAM. Specify address 0xf0,
 	 * 0xf1, 0xf2, 0xf3 to index one of the 4 slots in
 	 * spd_address for a given "DIMM".
diff --git a/src/southbridge/intel/bd82x6x/acpi/globalnvs.asl b/src/southbridge/intel/bd82x6x/acpi/globalnvs.asl
index 2fe092d..99edc31 100644
--- a/src/southbridge/intel/bd82x6x/acpi/globalnvs.asl
+++ b/src/southbridge/intel/bd82x6x/acpi/globalnvs.asl
@@ -136,6 +136,9 @@
 	GTF2,	56,	// 0xa4 - GTF task file buffer for port 2
 	IDEM,	 8,	// 0xab - IDE mode (compatible / enhanced)
 	IDET,	 8,	// 0xac - IDE
+	/* XHCI */
+	Offset (0xb2),
+	XHCI,	 8,
 	/* IGD OpRegion */
 	Offset (0xb4),
 	ASLB,	32,	// 0xb4 - IGD OpRegion Base Address
@@ -223,6 +226,17 @@
 	Store (Zero, \S33G)
 }
 
+/* Set XHCI Mode enable */
+Method (XHCE)
+{
+	Store (One, \XHCI)
+}
+
+/* Set XHCI Mode disable */
+Method (XHCD)
+{
+	Store (Zero, \XHCI)
+}
 External (\_TZ.THRM)
 External (\_TZ.SKIN)
 
diff --git a/src/southbridge/intel/bd82x6x/acpi/pch.asl b/src/southbridge/intel/bd82x6x/acpi/pch.asl
index 8632ad8..2f75fdc 100644
--- a/src/southbridge/intel/bd82x6x/acpi/pch.asl
+++ b/src/southbridge/intel/bd82x6x/acpi/pch.asl
@@ -245,7 +245,7 @@
 // PCI Express Ports 0:1c.x
 #include "pcie.asl"
 
-// USB 0:1d.0 and 0:1a.0
+// USB EHCI 0:1d.0 and 0:1a.0, XHCI 0:14.0
 #include "usb.asl"
 
 // LPC Bridge 0:1f.0
@@ -259,17 +259,22 @@
 
 Method (_OSC, 4)
 {
-	/* Check for proper GUID */
+	/* Check for XHCI */
+	If (LEqual (Arg0, ToUUID("7c9512a9-1705-4cb4-af7d-506a2423ab71")))
+	{
+		Return (^XHC.POSC(Arg1, Arg2, Arg3))
+	}
+
+	/* Check for PCIe */
 	If (LEqual (Arg0, ToUUID("33DB4D5B-1FF7-401C-9657-7441C03DD766")))
 	{
 		/* Let OS control everything */
 		Return (Arg3)
 	}
-	Else
-	{
-		/* Unrecognized UUID */
-		CreateDWordField (Arg3, 0, CDW1)
-		Or (CDW1, 4, CDW1)
-		Return (Arg3)
-	}
+
+	/* Else Return Unrecognized UUID */
+	CreateDWordField (Arg3, 0, CDW1)
+	Or (CDW1, 4, CDW1)
+	Return (Arg3)
+
 }
diff --git a/src/southbridge/intel/bd82x6x/acpi/usb.asl b/src/southbridge/intel/bd82x6x/acpi/usb.asl
index cf3e6a0..f19d368 100644
--- a/src/southbridge/intel/bd82x6x/acpi/usb.asl
+++ b/src/southbridge/intel/bd82x6x/acpi/usb.asl
@@ -89,3 +89,72 @@
 	}
 }
 
+Device (XHC)
+{
+	Name(_ADR, 0x00140000)
+	OperationRegion(XDEV, PCI_Config, 0, 256)
+	Field(XDEV, DWordAcc, NoLock, Preserve)
+	{
+		Offset(0xD0),
+		X2PR, 32,	// XUSB2PR
+		PRM2, 32,	// XUSB2PRM
+		SSEN, 32,	// USB3_PSSEN
+		RPM3, 32,	// USB3PRM
+		XPRT, 32,	// XHCI Ports
+	}
+
+	Name (_PRW, Package(){ 13, 4 }) // Power Resources for Wake
+
+	Method(POSC,3,Serialized)
+	{
+		// Create DWord field from the Capabilities Buffer
+		CreateDWordField(Arg2,0,CDW1)
+
+		// Check revision
+		If(LNotEqual(Arg1,One)) {
+			// Set unknown revision bit
+			Or(CDW1,0x8,CDW1)
+		}
+
+		// Set failure if xHCI is disabled by coreboot
+		If(LEqual(XHCI, 0)) {
+			Or(CDW1,0x2,CDW1)
+		}
+
+		// Query flag clear and xHCI in auto mode
+		If(LAnd(LNot(And(CDW1,0x1)),LOr(LEqual(XHCI ,2), LEqual(XHCI ,3)))) {
+			Store ("XHCI Switch", Debug)
+			Store(Zero, Local0)
+			And(XPRT, 0x3, Local0)
+			If(LOr(LEqual(Local0, 0), LEqual(Local0, 1))) {
+				Store(0xF, Local1)
+			}
+			ElseIf(LEqual(Local0, 2)) {
+				Store(0x3, Local1)
+			}
+			ElseIf(LEqual(Local0, 3)) {
+				Store(Zero, Local1)
+			}
+			And(RPM3, 0xFFFFFFF0, Local0)
+			Or(Local0, Local1, RPM3)
+			And(PRM2, 0xFFFFFFF0, Local0)
+			Or(Local0, Local1, PRM2)
+			And(SSEN, 0xFFFFFFF0, Local0)
+			Or(Local0, Local1, SSEN)
+			And(X2PR, 0xFFFFFFF0, Local0)
+			Or(Local0, Local1, X2PR)
+		}
+		Return(Arg2)
+	}
+
+	// Leave USB ports on for to allow Wake from USB
+	Method(_S3D,0)	// Highest D State in S3 State
+	{
+		Return (2)
+	}
+
+	Method(_S4D,0)	// Highest D State in S4 State
+	{
+		Return (2)
+	}
+}
diff --git a/src/southbridge/intel/bd82x6x/early_usb.c b/src/southbridge/intel/bd82x6x/early_usb.c
index b2e0091..bbe792f 100644
--- a/src/southbridge/intel/bd82x6x/early_usb.c
+++ b/src/southbridge/intel/bd82x6x/early_usb.c
@@ -27,6 +27,7 @@
 
 #define PCH_EHCI1_TEMP_BAR0 0xe8000000
 #define PCH_EHCI2_TEMP_BAR0 0xe8000400
+#define PCH_XHCI_TEMP_BAR0  0xe8001000
 
 /*
  * Setup USB controller MMIO BAR to prevent the
@@ -39,6 +40,7 @@
 {
 	device_t usb0 = PCH_EHCI1_DEV;
 	device_t usb1 = PCH_EHCI2_DEV;
+	device_t usb3 = PCH_XHCI_DEV;
 	u32 cmd;
 
 	/* USB Controller 1 */
@@ -54,4 +56,11 @@
 	cmd = pci_read_config32(usb1, PCI_COMMAND);
 	cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
 	pci_write_config32(usb1, PCI_COMMAND, cmd);
+
+	/* USB3 Controller */
+	pci_write_config32(usb3, PCI_BASE_ADDRESS_0,
+			   PCH_XHCI_TEMP_BAR0);
+	cmd = pci_read_config32(usb3, PCI_COMMAND);
+	cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
+	pci_write_config32(usb3, PCI_COMMAND, cmd);
 }
diff --git a/src/southbridge/intel/bd82x6x/nvs.h b/src/southbridge/intel/bd82x6x/nvs.h
index b8506d4..7b8b6c9 100644
--- a/src/southbridge/intel/bd82x6x/nvs.h
+++ b/src/southbridge/intel/bd82x6x/nvs.h
@@ -113,7 +113,9 @@
 	u8	gtf2[7];
 	u8	idem;
 	u8	idet;
-	u8	rsvd11[7];
+	u8	rsvd11[6];
+	/* XHCI */
+	u8	xhci;
 	/* IGD OpRegion (not implemented yet) */
 	u32	aslb; /* 0xb4 - IGD OpRegion Base Address */
 	u8	ibtt; /* 0xb8 - IGD boot type */
diff --git a/src/southbridge/intel/bd82x6x/pch.h b/src/southbridge/intel/bd82x6x/pch.h
index 13ffe3a..ca54418 100644
--- a/src/southbridge/intel/bd82x6x/pch.h
+++ b/src/southbridge/intel/bd82x6x/pch.h
@@ -95,6 +95,7 @@
 
 #define PCH_EHCI1_DEV		PCI_DEV(0, 0x1d, 0)
 #define PCH_EHCI2_DEV		PCI_DEV(0, 0x1a, 0)
+#define PCH_XHCI_DEV		PCI_DEV(0, 0x14, 0)
 #define PCH_ME_DEV		PCI_DEV(0, 0x16, 0)
 #define PCH_PCIE_DEV_SLOT	28
 
@@ -365,6 +366,8 @@
 #define D22IP_IDERIP	8	/* IDE-R Pin */
 #define D22IP_MEI2IP	4	/* MEI #2 Pin */
 #define D22IP_MEI1IP	0	/* MEI #1 Pin */
+#define D20IP		0x3128  /* 32bit */
+#define D20IP_XHCIIP	0
 #define D31IR		0x3140	/* 16bit */
 #define D30IR		0x3142	/* 16bit */
 #define D29IR		0x3144	/* 16bit */
@@ -373,6 +376,7 @@
 #define D26IR		0x314c	/* 16bit */
 #define D25IR		0x3150	/* 16bit */
 #define D22IR		0x315c	/* 16bit */
+#define D20IR		0x3160	/* 16bit */
 #define OIC		0x31fe	/* 16bit */
 #define SOFT_RESET_CTRL 0x38f4
 #define SOFT_RESET_DATA 0x38f8
@@ -392,7 +396,7 @@
 #define CG		0x341c	/* 32bit */
 
 /* Function Disable 1 RCBA 0x3418 */
-#define PCH_DISABLE_ALWAYS	((1 << 0)|(1 << 26)|(1 << 27))
+#define PCH_DISABLE_ALWAYS	((1 << 0)|(1 << 26))
 #define PCH_DISABLE_P2P		(1 << 1)
 #define PCH_DISABLE_SATA1	(1 << 2)
 #define PCH_DISABLE_SMBUS	(1 << 3)
@@ -403,6 +407,7 @@
 #define PCH_DISABLE_PCIE(x)	(1 << (16 + x))
 #define PCH_DISABLE_THERMAL	(1 << 24)
 #define PCH_DISABLE_SATA2	(1 << 25)
+#define PCH_DISABLE_XHCI	(1 << 27)
 
 /* Function Disable 2 RCBA 0x3428 */
 #define PCH_DISABLE_KT		(1 << 4)
diff --git a/src/southbridge/intel/bd82x6x/smihandler.c b/src/southbridge/intel/bd82x6x/smihandler.c
index 420c5db..093da5c 100644
--- a/src/southbridge/intel/bd82x6x/smihandler.c
+++ b/src/southbridge/intel/bd82x6x/smihandler.c
@@ -326,6 +326,17 @@
 	outl(reg32, gpiobase + GP_LVL2);
 }
 
+static void xhci_sleep(u8 slp_typ)
+{
+	u32 reg32;
+
+	if (slp_typ == SLP_TYP_S5) {
+	    reg32 = pcie_read_config32(PCH_XHCI_DEV, 0x74);
+	    reg32 |= (1 << 8 | 0x03 );
+	    pcie_write_config32(PCH_XHCI_DEV, 0x74, reg32);
+	}
+}
+
 static void southbridge_smi_sleep(unsigned int node, smm_state_save_area_t *state_save)
 {
 	u8 reg8;
@@ -353,6 +364,9 @@
 	printk(BIOS_SPEW, "SMI#: SLP = 0x%08x\n", reg32);
 	slp_typ = (reg32 >> 10) & 7;
 
+	if (smm_get_gnvs()->xhci)
+		xhci_sleep(slp_typ);
+
 	/* Do any mainboard sleep handling */
 	tseg_relocate((void **)&mainboard_sleep);
 	if (mainboard_sleep)