1 files changed, 142 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/acpi/gpio.asl b/src/soc/intel/skylake/acpi/gpio.asl
new file mode 100644
index 0000000000..c6d8753975
--- /dev/null
+++ b/src/soc/intel/skylake/acpi/gpio.asl
@@ -0,0 +1,142 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+Device (GPIO)
+{
+	// GPIO Controller
+	Method (_HID)
+	{
+		If (\ISWP ()) {
+			// WildcatPoint
+			Return ("INT3437")
+		}
+
+		// LynxPoint-LP
+		Return ("INT33C7")
+	}
+	Name (_UID, 1)
+
+	Name (RBUF, ResourceTemplate()
+	{
+		DWordIo (ResourceProducer,
+			MinFixed,    // IsMinFixed
+			MaxFixed,    // IsMaxFixed
+			PosDecode,   // Decode
+			EntireRange, // ISARanges
+			0x00000000,  // AddressGranularity
+			0x00000000,  // AddressMinimum
+			0x00000000,  // AddressMaximum
+			0x00000000,  // AddressTranslation
+			0x00000000,  // RangeLength
+			,            // ResourceSourceIndex
+			,            // ResourceSource
+			BAR0)
+		// Disabled due to IRQ storm: http://crosbug.com/p/29548
+		//Interrupt (ResourceConsumer,
+		//	Level, ActiveHigh, Shared, , , ) {14}
+	})
+
+	Method (_CRS, 0, NotSerialized)
+	{
+		CreateDwordField (^RBUF, ^BAR0._MIN, BMIN)
+		CreateDwordField (^RBUF, ^BAR0._MAX, BMAX)
+		CreateDwordField (^RBUF, ^BAR0._LEN, BLEN)
+
+		Store (GPIO_BASE_SIZE, BLEN)
+		Store (GPIO_BASE_ADDRESS, BMIN)
+		Store (Subtract (Add (GPIO_BASE_ADDRESS,
+				      GPIO_BASE_SIZE), 1), BMAX)
+
+		Return (RBUF)
+	}
+
+	Method (_STA, 0, NotSerialized)
+	{
+		Return (0xF)
+	}
+
+	// GWAK: Setup GPIO as ACPI GPE for Wake
+	// Arg0: GPIO Number
+	Method (GWAK, 1, NotSerialized)
+	{
+		// Local0 = GPIO Base Address
+		Store (And (GPBS, Not(0x1)), Local0)
+
+		// Local1 = BANK, Local2 = OFFSET
+		Divide (Arg0, 32, Local2, Local1)
+
+		//
+		// Set OWNER to ACPI
+		//
+
+		// Local3 = GPIOBASE + GPIO_OWN(BANK)
+		Store (Add (Local0, Multiply (Local1, 0x4)), Local3)
+
+		// GPIO_OWN(BANK)
+		OperationRegion (IOWN, SystemIO, Local3, 4)
+		Field (IOWN, AnyAcc, NoLock, Preserve) {
+			GOWN, 32,
+		}
+
+		// GPIO_OWN[GPIO] = 0 (ACPI)
+		Store (And (GOWN, Not (ShiftLeft (0x1, Local2))), GOWN)
+
+		//
+		// Set ROUTE to SCI
+		//
+
+		// Local3 = GPIOBASE + GPIO_ROUTE(BANK)
+		Store (Add (Add (Local0, 0x30), Multiply (Local1, 0x4)), Local3)
+
+		// GPIO_ROUTE(BANK)
+		OperationRegion (IROU, SystemIO, Local3, 4)
+		Field (IROU, AnyAcc, NoLock, Preserve) {
+			GROU, 32,
+		}
+
+		// GPIO_ROUTE[GPIO] = 0 (SCI)
+		Store (And (GROU, Not (ShiftLeft (0x1, Local2))), GROU)
+
+		//
+		// Set GPnCONFIG to GPIO|INPUT|INVERT
+		//
+
+		// Local3 = GPIOBASE + GPnCONFIG0(GPIO)
+		Store (Add (Add (Local0, 0x100), Multiply (Arg0, 0x8)), Local3)
+
+		// GPnCONFIG(GPIO)
+		OperationRegion (GPNC, SystemIO, Local3, 8)
+		Field (GPNC, AnyAcc, NoLock, Preserve) {
+			GMOD, 1,  // MODE:   0=NATIVE 1=GPIO
+			, 1,
+			GIOS, 1,  // IO_SEL: 0=OUTPUT 1=INPUT
+			GINV, 1,  // INVERT: 0=NORMAL 1=INVERT
+			GLES, 1,  // LxEB:   0=EDGE 1=LEVEL
+			, 24,
+			ILVL, 1,  // INPUT:  0=LOW 1=HIGH
+			OLVL, 1,  // OUTPUT: 0=LOW 1=HIGH
+			GPWP, 2,  // PULLUP: 00=NONE 01=DOWN 10=UP 11=INVALID
+			ISEN, 1,  // SENSE:  0=ENABLE 1=DISABLE
+		}
+
+		Store (0x1, GMOD) // GPIO
+		Store (0x1, GIOS) // INPUT
+		Store (0x1, GINV) // INVERT
+	}
+}