Add support for "Butterfly" Chromebook

We're happy to announce coreboot support for the "Butterfly"
Chromebook, a.k.a HP Pavilion Chromebook.

More information at:
http://www.google.com/intl/en/chrome/devices/hp-pavilion-chromebook.html

This commit also includes support for the ENE KB3940Q embedded controller
running on Quanta's firmware.

Change-Id: I194f847a94005218ec04eeba091c3257ac459510
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2359
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Tested-by: build bot (Jenkins)

8 files changed, 417 insertions, 0 deletions

diff --git a/src/mainboard/google/butterfly/acpi/chromeos.asl b/src/mainboard/google/butterfly/acpi/chromeos.asl
new file mode 100644
index 0000000000..27373e1480
--- /dev/null
+++ b/src/mainboard/google/butterfly/acpi/chromeos.asl
@@ -0,0 +1,25 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011 The ChromiumOS Authors.  All rights reserved.
+ *
+ * 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
+ */
+
+Name(OIPG, Package() {
+	Package() { 0x001, 1, 0xFF, "PantherPoint" }, // recovery button
+	Package() { 0x002, 1, 0xFF, "PantherPoint" }, // developer button
+	Package() { 0x003, 0,    6, "PantherPoint" }, // firmware write protect
+})
+
diff --git a/src/mainboard/google/butterfly/acpi/ec.asl b/src/mainboard/google/butterfly/acpi/ec.asl
new file mode 100644
index 0000000000..bb053cdd03
--- /dev/null
+++ b/src/mainboard/google/butterfly/acpi/ec.asl
@@ -0,0 +1,26 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 The ChromiumOS Authors.  All rights reserved.
+ *
+ * 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
+ */
+
+/* mainboard configuration */
+#include "../ec.h"
+
+#define EC_SCI  13	// GPIO13 -> Runtime SCI
+
+/* ACPI code for EC functions */
+#include <ec/quanta/ene_kb3940q/acpi/ec.asl>
diff --git a/src/mainboard/google/butterfly/acpi/mainboard.asl b/src/mainboard/google/butterfly/acpi/mainboard.asl
new file mode 100644
index 0000000000..c6e35e8a84
--- /dev/null
+++ b/src/mainboard/google/butterfly/acpi/mainboard.asl
@@ -0,0 +1,63 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011 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
+ */
+
+Scope (\_SB) {
+	Device (LID0)
+	{
+		Name (_HID, EisaId("PNP0C0D"))
+		Method (_LID, 0)
+		{
+			Store (\_SB.PCI0.LPCB.EC0.LIDF, \LIDS)
+			Return (\LIDS)
+		}
+	}
+
+	Device (PWRB)
+	{
+		Name (_HID, EisaId("PNP0C0C"))
+	}
+
+	Device (TPAD)
+	{
+		Name (_ADR, 0x0)
+		Name (_UID, 1)
+
+		// Report as a Sleep Button device so Linux will
+		// automatically enable it as a wake source
+		Name(_HID, EisaId("PNP0C0E"))
+
+		// Trackpad Wake is GPIO11, wake from S3
+		Name(_PRW, Package(){0x1b, 0x03})
+
+		Name(_CRS, ResourceTemplate()
+		{
+			// PIRQG -> GSI22
+			Interrupt (ResourceConsumer, EDGE, ActiveLow) {22}
+
+			// SMBUS Address 0x67
+			VendorShort (ADDR) {0x67}
+		})
+	}
+
+}
+
+// Battery information
+Name (BATV, "GOOGLE")
diff --git a/src/mainboard/google/butterfly/acpi/platform.asl b/src/mainboard/google/butterfly/acpi/platform.asl
new file mode 100644
index 0000000000..5c84ba14d5
--- /dev/null
+++ b/src/mainboard/google/butterfly/acpi/platform.asl
@@ -0,0 +1,88 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011-2012 The Chromium OS Authors. All rights reserved.
+ *
+ * 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
+ */
+
+/* The APM port can be used for generating software SMIs */
+
+OperationRegion (APMP, SystemIO, 0xb2, 2)
+Field (APMP, ByteAcc, NoLock, Preserve)
+{
+	APMC, 8,	// APM command
+	APMS, 8		// APM status
+}
+
+/* Port 80 POST */
+
+OperationRegion (POST, SystemIO, 0x80, 1)
+Field (POST, ByteAcc, Lock, Preserve)
+{
+	DBG0, 8
+}
+
+/* SMI I/O Trap */
+Method(TRAP, 1, Serialized)
+{
+	Store (Arg0, SMIF)	// SMI Function
+	Store (0, TRP0)		// Generate trap
+	Return (SMIF)		// Return value of SMI handler
+}
+
+/* The _PIC method is called by the OS to choose between interrupt
+ * routing via the i8259 interrupt controller or the APIC.
+ *
+ * _PIC is called with a parameter of 0 for i8259 configuration and
+ * with a parameter of 1 for Local Apic/IOAPIC configuration.
+ */
+
+Method(_PIC, 1)
+{
+	// Remember the OS' IRQ routing choice.
+	Store(Arg0, PICM)
+}
+
+/* The _PTS method (Prepare To Sleep) is called before the OS is
+ * entering a sleep state. The sleep state number is passed in Arg0
+ */
+
+Method(_PTS,1)
+{
+
+}
+
+/* The _WAK method is called on system wakeup */
+
+Method(_WAK,1)
+{
+	/* Update in case state changed while asleep */
+	/* Update AC status */
+	Store (\_SB.PCI0.LPCB.EC0.ADPT, Local0)
+	if (LNotEqual (Local0, \PWRS)) {
+		Store (Local0, \PWRS)
+		Notify (\_SB.PCI0.LPCB.EC0.AC, 0x80)
+	}
+
+	/* Update LID status */
+	Store (\_SB.PCI0.LPCB.EC0.LIDF, Local0)
+	if (LNotEqual (Local0, \LIDS)) {
+		Store (Local0, \LIDS)
+		Notify (\_SB.LID0, 0x80)
+	}
+
+	Return(Package(){0,0})
+}
+
diff --git a/src/mainboard/google/butterfly/acpi/sandybridge_pci_irqs.asl b/src/mainboard/google/butterfly/acpi/sandybridge_pci_irqs.asl
new file mode 100644
index 0000000000..ba725ac1db
--- /dev/null
+++ b/src/mainboard/google/butterfly/acpi/sandybridge_pci_irqs.asl
@@ -0,0 +1,65 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007-2009 coresystems GmbH
+ *
+ * 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
+ */
+
+/* This is board specific information: IRQ routing for Sandybridge */
+
+// PCI Interrupt Routing
+Method(_PRT)
+{
+	If (PICM) {
+		Return (Package() {
+			// Onboard graphics (IGD)	0:2.0
+			Package() { 0x0002ffff, 0, 0, 16 },//              GFX    INTA -> PIRQA (MSI)
+			// High Definition Audio	0:1b.0
+			Package() { 0x001bffff, 0, 0, 16 },//  D27IP_ZIP   HDA    INTA -> PIRQA (MSI)
+			// PCIe Root Ports		0:1c.x
+			Package() { 0x001cffff, 0, 0, 17 },//  D28IP_P1IP  WLAN   INTA -> PIRQB
+			Package() { 0x001cffff, 1, 0, 21 },//  D28IP_P2IP  ETH0   INTB -> PIRQF
+			Package() { 0x001cffff, 2, 0, 19 },//  D28IP_P3IP  SDCARD INTC -> PIRQD
+			// EHCI	#1			0:1d.0
+			Package() { 0x001dffff, 0, 0, 19 },//  D29IP_E1P   EHCI1  INTA -> PIRQD
+			// EHCI	#2			0:1a.0
+			Package() { 0x001affff, 0, 0, 21 },//  D26IP_E2P   EHCI2  INTA -> PIRQF
+			// LPC devices			0:1f.0
+			Package() { 0x001fffff, 0, 0, 17 }, // D31IP_SIP   SATA   INTA -> PIRQB (MSI)
+			Package() { 0x001fffff, 1, 0, 23 }, // D31IP_SMIP  SMBUS  INTB -> PIRQH
+			Package() { 0x001fffff, 2, 0, 16 }, // D31IP_TTIP  THRT   INTC -> PIRQA
+		})
+	} Else {
+		Return (Package() {
+			// Onboard graphics (IGD)	0:2.0
+			Package() { 0x0002ffff, 0, \_SB.PCI0.LPCB.LNKA, 0 },
+			// High Definition Audio	0:1b.0
+			Package() { 0x001bffff, 0, \_SB.PCI0.LPCB.LNKA, 0 },
+			// PCIe Root Ports		0:1c.x
+			Package() { 0x001cffff, 0, \_SB.PCI0.LPCB.LNKB, 0 },
+			Package() { 0x001cffff, 1, \_SB.PCI0.LPCB.LNKF, 0 },
+			Package() { 0x001cffff, 2, \_SB.PCI0.LPCB.LNKD, 0 },
+			// EHCI	#1			0:1d.0
+			Package() { 0x001dffff, 0, \_SB.PCI0.LPCB.LNKD, 0 },
+			// EHCI	#2			0:1a.0
+			Package() { 0x001affff, 0, \_SB.PCI0.LPCB.LNKF, 0 },
+			// LPC device			0:1f.0
+			Package() { 0x001fffff, 0, \_SB.PCI0.LPCB.LNKB, 0 },
+			Package() { 0x001fffff, 1, \_SB.PCI0.LPCB.LNKH, 0 },
+			Package() { 0x001fffff, 2, \_SB.PCI0.LPCB.LNKA, 0 },
+		})
+	}
+}
+
diff --git a/src/mainboard/google/butterfly/acpi/superio.asl b/src/mainboard/google/butterfly/acpi/superio.asl
new file mode 100644
index 0000000000..2089604e01
--- /dev/null
+++ b/src/mainboard/google/butterfly/acpi/superio.asl
@@ -0,0 +1,26 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 The ChromiumOS Authors.  All rights reserved.
+ *
+ * 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
+ */
+
+/* mainboard configuration */
+#include "../ec.h"
+
+#define SIO_EC_ENABLE_PS2K       // Enable PS/2 Keyboard
+
+/* ACPI code for EC SuperIO functions */
+#include <ec/quanta/ene_kb3940q/acpi/superio.asl>
diff --git a/src/mainboard/google/butterfly/acpi/thermal.asl b/src/mainboard/google/butterfly/acpi/thermal.asl
new file mode 100644
index 0000000000..5e0dd43e04
--- /dev/null
+++ b/src/mainboard/google/butterfly/acpi/thermal.asl
@@ -0,0 +1,81 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011 The Chromium OS Authors. All rights reserved.
+ *
+ * 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
+ */
+
+// Thermal Zone
+
+Scope (\_TZ)
+{
+	ThermalZone (THRM)
+	{
+		Name (_TC1, 0x02)
+		Name (_TC2, 0x05)
+
+		// Thermal zone polling frequency: 10 seconds
+		Name (_TZP, 100)
+
+		// Thermal sampling period for passive cooling: 2 seconds
+		Name (_TSP, 20)
+
+		// Convert from Degrees C to 1/10 Kelvin for ACPI
+		Method (CTOK, 1) {
+			// 10th of Degrees C
+			Multiply (Arg0, 10, Local0)
+
+			// Convert to Kelvin
+			Add (Local0, 2732, Local0)
+
+			Return (Local0)
+		}
+
+		// Threshold for OS to shutdown
+		Method (_CRT, 0, Serialized)
+		{
+			Return (CTOK (\TCRT))
+		}
+
+		// Threshold for passive cooling
+		Method (_PSV, 0, Serialized)
+		{
+			Return (CTOK (\TPSV))
+		}
+
+		// Processors used for passive cooling
+		Method (_PSL, 0, Serialized)
+		{
+			Return (\PPKG ())
+		}
+
+		Method (_TMP, 0, Serialized)
+		{
+			// Get CPU Temperature from EC
+			Store (\_SB.PCI0.LPCB.EC0.CTMP, Local0)
+
+			// Convert to 1/10 Kelvin
+			Multiply (Local0, 10, Local0)
+
+			// Adjust by offset to get Kelvin
+			Add (Local0, 2732, Local0)
+
+			Return (Local0)
+		}
+
+// The EC does all fan control. The is no Active Cooling Fan control (_ACx).
+	}
+}
+
diff --git a/src/mainboard/google/butterfly/acpi/video.asl b/src/mainboard/google/butterfly/acpi/video.asl
new file mode 100644
index 0000000000..3ececa912b
--- /dev/null
+++ b/src/mainboard/google/butterfly/acpi/video.asl
@@ -0,0 +1,43 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007-2009 coresystems GmbH
+ *
+ * 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
+ */
+
+// Brightness write
+Method (BRTW, 1, Serialized)
+{
+	// TODO
+}
+
+// Hot Key Display Switch
+Method (HKDS, 1, Serialized)
+{
+	// TODO
+}
+
+// Lid Switch Display Switch
+Method (LSDS, 1, Serialized)
+{
+	// TODO
+}
+
+// Brightness Notification
+Method(BRTN,1,Serialized)
+{
+	// TODO (no displays defined yet)
+}
+