Add support for ENE932 EC w/ Compal firmware

Change-Id: I19b03139e7edfee6ff3e0bcef735bb36bfadc354
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2024
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

11 files changed, 889 insertions, 0 deletions

diff --git a/src/ec/compal/Kconfig b/src/ec/compal/Kconfig
new file mode 100644
index 0000000000..5b7899aee5
--- /dev/null
+++ b/src/ec/compal/Kconfig
@@ -0,0 +1 @@
+source src/ec/compal/ene932/Kconfig
diff --git a/src/ec/compal/Makefile.inc b/src/ec/compal/Makefile.inc
new file mode 100644
index 0000000000..ce75ca6339
--- /dev/null
+++ b/src/ec/compal/Makefile.inc
@@ -0,0 +1 @@
+subdirs-$(CONFIG_EC_COMPAL_ENE932) += ene932
diff --git a/src/ec/compal/ene932/Kconfig b/src/ec/compal/ene932/Kconfig
new file mode 100644
index 0000000000..47e4b7b8d4
--- /dev/null
+++ b/src/ec/compal/ene932/Kconfig
@@ -0,0 +1,4 @@
+config EC_COMPAL_ENE932
+	bool
+	help
+	Interface to COMPAL ENE932 Embedded Controller.
diff --git a/src/ec/compal/ene932/Makefile.inc b/src/ec/compal/ene932/Makefile.inc
new file mode 100644
index 0000000000..fb898bedb0
--- /dev/null
+++ b/src/ec/compal/ene932/Makefile.inc
@@ -0,0 +1,3 @@
+ramstage-y += ec.c
+smm-y += ec.c
+smm-y += ../../../lib/delay.c
diff --git a/src/ec/compal/ene932/acpi/ac.asl b/src/ec/compal/ene932/acpi/ac.asl
new file mode 100644
index 0000000000..8c85fc335c
--- /dev/null
+++ b/src/ec/compal/ene932/acpi/ac.asl
@@ -0,0 +1,39 @@
+/*
+ * 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
+ */
+
+// Scope (EC0)
+
+Device (AC)
+{
+	Name (_HID, "ACPI0003")
+	Name (_PCL, Package () { \_SB })
+
+	Method (_PSR)
+	{
+		Store(ADPT, Local0)
+		Return(Local0)
+	}
+
+	Method (_STA)
+	{
+		Return (0x0F)
+	}
+}
diff --git a/src/ec/compal/ene932/acpi/battery.asl b/src/ec/compal/ene932/acpi/battery.asl
new file mode 100644
index 0000000000..90d8adbd87
--- /dev/null
+++ b/src/ec/compal/ene932/acpi/battery.asl
@@ -0,0 +1,158 @@
+/*
+ * 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
+ */
+
+// Scope (EC0)
+
+Device (BATX)
+{
+	Name (_HID, EISAID ("PNP0C0A"))
+	Name (_UID, 1)
+	Name (_PCL, Package () { \_SB })
+
+	Name (PBIF, Package () {
+		0x00000001,  // Power Unit: mAh
+		0xFFFFFFFF,  // Design Capacity
+		0xFFFFFFFF,  // Last Full Charge Capacity
+		0x00000001,  // Battery Technology: Rechargeable
+		0xFFFFFFFF,  // Design Voltage
+		0x00000003,  // Design Capacity of Warning
+		0xFFFFFFFF,  // Design Capacity of Low
+		0x00000001,  // Capacity Granularity 1
+		0x00000001,  // Capacity Granularity 2
+		"",          // Model Number
+		"",          // Serial Number
+		"LION",      // Battery Type
+		""           // OEM Information
+	})
+
+	Name (PBST, Package () {
+		0x00000000,  // Battery State
+		0xFFFFFFFF,  // Battery Present Rate
+		0xFFFFFFFF,  // Battery Remaining Capacity
+		0xFFFFFFFF,  // Battery Present Voltage
+	})
+	Name (BTNM, Zero)  // Battery number
+
+	// Workaround for full battery status, enabled by default
+	Name (BFWK, One)
+
+	// Method to enable full battery workaround
+	Method (BFWE)
+	{
+		Store (One, BFWK)
+	}
+
+	// Method to disable full battery workaround
+	Method (BFWD)
+	{
+		Store (Zero, BFWK)
+	}
+
+	Method (_STA, 0, Serialized)
+	{
+		If (BOL0) {
+			Return (0x1F)
+		} Else {
+			Return (0x0F)
+		}
+	}
+
+	Method (_BIF, 0, Serialized)
+	{
+		// Update fields from EC
+		Store (BAM0, Index (PBIF, 0))
+		Store (BDC0, Index (PBIF, 1))
+		Store (BFC0, Index (PBIF, 2))
+		Store (BDV0, Index (PBIF, 4))
+		Divide(BFC0, 0x64, Local0, Local1)
+		Multiply(Local1, 0x0A, Local1)
+		Store(Local1, Index(PBIF, 5))
+		Divide(BFC0, 0x64, Local0, Local1)
+		Multiply(Local1, 0x03, Local1)
+		Store (Local1, Index (PBIF, 6))
+
+		Store (ToString(BATD), Index (PBIF, 9))  // model
+		Store (ToHexString(BSN0), Index (PBIF, 10))  // serial
+		Store (ToString(BMFN), Index (PBIF, 12))  // venor
+
+		Store(BDN0, BTNM)	// Save the battery number
+
+		Return (PBIF)
+	}
+
+	Method (_BST, 0, Serialized)
+	{
+		//
+		// 0: BATTERY STATE
+		//
+		// bit 0 = discharging
+		// bit 1 = charging
+		// bit 2 = critical level
+		//
+
+		// Get battery state from EC and save it for the charging workaround
+		Store (BST0, Local0)
+		Store (Local0, Index (PBST, 0))
+
+		//
+		// 1: BATTERY PRESENT RATE/CURRENT
+		//
+
+		Store (BAC0, Local1)
+		Subtract(0xFFFF, Local1, Local1)
+		Store (Local1, Index (PBST, 1))
+
+		//
+		// 2: BATTERY REMAINING CAPACITY
+		//
+		Multiply(BFC0, GAU0, Local1)
+		Divide(Local1, 0x64, Local2, Local1)
+
+		If (LAnd (BFWK, LAnd (ADPT, LNot (Local0)))) {
+			// On AC power and battery is neither charging
+			// nor discharging.  Linux expects a full battery
+			// to report same capacity as last full charge.
+			// https://bugzilla.kernel.org/show_bug.cgi?id=12632
+			Store (GAU0, Local2)
+
+			// See if within ~3% of full
+			ShiftRight (Local2, 5, Local3)
+			If (LAnd (LGreater (Local1, Subtract (Local2, Local3)),
+			          LLess (Local1, Add (Local2, Local3))))
+			{
+				Store (Local2, Local1)
+			}
+		}
+		Store (Local1, Index (PBST, 2))
+
+		//
+		// 3: BATTERY PRESENT VOLTAGE
+		//
+		Store (BPV0, Index (PBST, 3))
+
+		// Check the Battery Number
+		If(LNotEqual(BDN0, BTNM)) {
+			Notify(BATX, 0x81)
+		}
+
+		Return (PBST)
+	}
+}
diff --git a/src/ec/compal/ene932/acpi/ec.asl b/src/ec/compal/ene932/acpi/ec.asl
new file mode 100644
index 0000000000..cb50a21dc5
--- /dev/null
+++ b/src/ec/compal/ene932/acpi/ec.asl
@@ -0,0 +1,355 @@
+/*
+ * 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 mainboard must define a PNOT method to handle power
+ * state notifications and Notify CPU device objects to
+ * re-evaluate their _PPC and _CST tables.
+ */
+
+Device (EC0)
+{
+	Name (_HID, EISAID ("PNP0C09"))
+	Name (_UID, 1)
+	Name (_GPE, EC_SCI)	// GPE for Runtime SCI
+
+	OperationRegion (ERAM, EmbeddedControl, 0x00, 0xff)
+	Field (ERAM, ByteAcc, Lock, Preserve)
+	{
+		// EC Name Space Configuration
+		Offset(0x00),
+		, 1,            // Reserved                              ; 00h.0
+		LCDS, 1,        // 1= BACKLIGHT ON , 0= BACKLIGHT OFF    ; 00h.1
+			, 6,        // Reserved                              ; 00h.2 ~ 00h.6
+		HTBN, 8,        // HOTKEY_BUTTON_NUMBER                  ; 01h For ABO Hot Key Function
+		HTBT, 8,        // HOTKEY_BUTTON_TYPE                    ; 02h For ABO Hot Key Function
+		LMEN, 1,        // Launch Manager enable .(1=Enable )    ; 03h.0, Lauanch manage
+		, 7,            // Reserved                              ; 03h.1 ~ 03h.7
+		ADAP, 2,        // Adaptor Type                          ; 04h.0 ~ 1
+		                // 0x00 = default(65w)
+		                // 0x01 = 65w
+		                // 0x02 = 90w
+		                // 0x03 = 120w
+		, 6,            // Reserved                             ; 04h.2 ~ 04h.7
+		Offset(0x08),   // Project Common Name space definition ; 08h - 2Ch
+		Offset(0x2D),
+		DSPM, 1,        // Display Mode.(0=dGPU, 1=iGPU )       ; 2Dh.0
+		Offset(0x2E),
+		EFP1, 4,        // Turbo Off P-State                    ; 2Eh.3-0
+		Offset(0x40),   // ABO Common Name space definition     ; 2F - 5Ch
+		Offset(0x5D),
+		ENIB, 16,       // Ext_NameSpace_Index                  ; 5Dh
+		                // Ext_NameSpace_Bank                   ; 5Eh
+		ENDD, 8,        // Ext_NameSpace_Data                   ; 5Fh
+		Offset(0x60),
+		SMPR, 8,        // SMBus protocol register              ; 60h
+		SMST, 8,        // SMBus status register                ; 61h
+		SMAD, 8,        // SMBus address register               ; 62h
+		SMCM, 8,        // SMBus command register               ; 63h
+		SMD0, 0x100,    // SMBus data regs (32)                 ; 64h - 83h
+		BCNT, 8,        // SMBus Block Count                    ; 84h
+		SMAA, 24,       // SMBus Alarm Address                  ; 85h - 87h
+		Offset(0x90),
+		BMFN, 72,       // Battery Manufacture name             ; 90h - 98h
+		BATD, 56,       // Battery Device name                  ; 99h - 9fh
+		Offset(0xA1),
+		, 1,            // Reserve                              ; A1h.0
+		VIDO, 1,        // Video Out Button (1=Pressed)         ; A1h.1
+		TOUP, 1,        // Touch Pad Button (0=On, 1=Off)       ; A1h.2
+		Offset(0xA2),
+		ODTS, 8,        // OS Shutdown Temp2 (DTS)              ; A2h
+		Offset(0xA3),
+		OSTY, 3,        // OSTYPE :   000- XP                   ; A3h.0-2
+		                //            001- Vista
+		                //            010- Linux
+		                //            011- Win7
+		, 4,            // Reserve                              ; A3h.3-6
+		ADPT, 1,        // AC Adapter (0=OffLine, 1=OnLine)     ; A3h.7
+		Offset(0xA4),
+		PWAK, 1,        // PME Wake Enable(0=Disable, 1=Enable) ; A4h.0
+		MWAK, 1,        // Modem Wake Enable(0/1=Disable/Enable); A4h.1
+		LWAK, 1,        // LAN Wake Enable (0=Disable, 1=Enable); A4h.2
+		RWAK, 1,        // RTC Wake Enable(0=DIsable,1=Enable)  ; A4h.3
+		WWAK, 1,        // WLAN wake Enable (0=Disable,1=Enable); A4h.4
+		UWAK, 1,        // USB WAKE(0=Disable, 1=Enable)        ; A4h.5
+		KWAK, 1,        // Keyboard WAKE(0=Disable,1=Enable)    ; A4h.6
+		TWAK, 1,        // TouchPad WAKE(0=Disable,1=Enable)    ; A4h.7
+		Offset(0xA5),
+		CCAC, 1,        // Charge Current (1=AC OFF)            ; A5h.0
+		AOAC, 1,        // Adapter OVP (1=AC OFF)               ; A5h.1
+		BLAC, 1,        // Batt learning (1=AC OFF)             ; A5h.2
+		PSRC, 1,        // Command (1=AC OFF)                   ; A5h.3
+		BOAC, 1,        // Batt OVP (1=AC OFF)                  ; A5h.4
+		LCAC, 1,        // Leak Current (1=AC OFF)              ; A5h.5
+		AAAC, 1,        // Air Adapter (1=AC OFF)               ; A5h.6
+		ACAC, 1,        // AC Off (1=AC OFF)                    ; A5h.7
+		Offset(0xA6),
+		S3ST, 1,        // System entry S3 State                : A6.0
+		S3RM, 1,        // System resume from S3 State          : A6.1
+		S4ST, 1,        // System entry S4 State                : A6.2
+		S4RM, 1,        // System resume from S4 State          : A6.3
+		S5ST, 1,        // System entry S4 State                : A6.4
+		S5RM, 1,        // System resume from S4 State          : A6.5
+		, 2,            // Reserve                              ; A6h.6-7
+		Offset(0xA7),
+		OSTT, 8,        // OS Throttling Temp                   ; A7h
+		OSST, 8,        // OS Shutdown Temp                     ; A8h
+		THLT, 8,        // Throttling Temp                      ; A9h
+		TCNL, 8,        // Tcontrol Temp                        ; AAh
+		MODE, 1,        // Mode(0=Local, 1=Remote)              ; ABh.0
+		, 2,            // Reserve                              ; ABh.1-2
+		INIT, 1,        // INITOK(0/1=Controlled by OS/EC)      ; ABh.3
+		FAN1, 1,        // FAN1 Active                          ; ABh.4
+		FAN2, 1,        // FAN2 Active                          ; ABh.5
+		FANT, 1,        // FAN Speed Time OK                    ; ABh.6
+		SKNM, 1,        // Skin Mode (0/1=Skin Address 90/92)   ; ABh.7
+		SDTM, 8,        // Shutdown Thermal Temperature         ; ACh
+		FSSN, 4,        // Fan Speed Step Number                ; ADh.0-3
+		                // 00 : Fan Off
+		                // 01 : Fan On Speed 1
+		                // 10 : Fan On Speed 2
+		                // 11 : Fan On Speed 3
+		FANU, 4,        // Machine Fan's number                 ; ADh.4-7
+		PCVL, 4,        // Throttling Level                     ; AEh.0-3
+		                // 0000 : Nothing
+		                // 0001 : Clock throttling 12.5%
+		                // 0010 : Clock throttling 25%
+		                // 0011 : Clock throttling 37.5%
+		                // 0100 : Clock throttling 50%
+		, 2,            // Reserved                             ; AEh.4-5
+		SWTO, 1,        // SW Throttling (1=Active)             ; AEh.6
+		TTHR, 1,        // HW (THRM#) Throttling (1=Active)     ; AEh.7
+		TTHM, 1,        // TS_THERMAL(1:Throttling for thermal) ; AFh.0
+		THTL, 1,        // THROTTLING(1:Ctrl H/W throtting act) ; AFh.1
+		, 2,            // Reserved                             ; AFh.2-3
+		NPST, 4,        // Number of P-State level              ; AFh.4-7
+		CTMP, 8,        // Current CPU Temperature              ; B0h
+		CTML, 8,        // CPU local temperature                ; B1h
+		SKTA, 8,        // Skin Temperature A                   ; B2h
+		SKTB, 8,        // GPU Temperature                      ; B3h
+		SKTC, 8,        // Skin Temperature C                   ; B4h
+		, 8,            // Reserved                             ; B5h
+		NTMP, 8,        // North Bridge Diode Temp              ; B6h
+		Offset(0xB7),
+		, 1,            // Reserved                             ; B7h.0
+		SKEY, 1,        // Security key event                   ; B7h.1
+		DIGM, 1,        // Digital Mode (1=Selected)            ; B7h.2
+		CDLE, 1,        // CD lock mode enable                  ; B7h.3
+		, 4,            // Reserved                             ; B7h.4-7
+		, 1,            // Reserved                             ; B8h.0
+		LIDF, 1,        // LID flag (1=Closed, 0=Opened)        ; B8h.1
+		PMEE, 1,        // PME event (0=off, 1=On)              ; B8h.2
+		PWBE, 1,        // Power button event (0=off, 1=On)     ; B8h.3
+		RNGE, 1,        // Ring in event (0=off, 1=On)          ; B8h.4
+		BTWE, 1,        // Bluetooth wake event (0=off, 1=On)   ; B8h.5
+		, 2,            // Reserved                             ; B8h.6-7
+		Offset(0xB9),
+		BRTS, 8,        // Brightness Value                     ; B9h
+		S35M, 1,        // S3.5 HotKey test mode                ; BAh.0
+		S35S, 1,        // S3.5 function status                 ; BAh.1
+		, 2,            // Reserved                             ; BAh.2-3
+		FFEN, 1,        // IRST support bit (1= Support)        ; BAh.4
+		FFST, 1,        // IRST status flag                     ; BAh.5
+		, 2,            // Reserved                             ; BAh.6-7
+		WLAT, 1,        // Wireless LAN (0=Inactive, 1=Active)  ; BBh.0
+		BTAT, 1,        // BlueTooth (0=Inactive, 1=Active)     ; BBh.1
+		WLEX, 1,        // Wireless LAN (0=Not Exist, 1=Exist)  ; BBh.2
+		BTEX, 1,        // BlueTooth (0=Not Exist, 1=Exist)     ; BBh.3
+		KLSW, 1,        // Kill Switch (0=Off, 1=On)            ; BBh.4
+		WLOK, 1,        // Wireless LAN Initialize OK           ; BBh.5
+		AT3G, 1,        // 3G (0=non-active, 1=active)          ; BBh.6
+		EX3G, 1,        // 3G (0=Not Exist, 1=Exist)            ; BBh.7
+		PJID, 8,        // Project ID                           ; BCh
+		CPUJ, 3,        // CPU Type                             ; BDh.0-2
+		                // 00, Tj85,
+		                // 01, Tj90,
+		                // 02, Tj100,
+		                // 03, Tj105,
+		                // 04 - 07, Reserved
+		CPNM, 3,        // CPU Core number                      ; BDh.3-5
+		                // 00, Single Core
+		                // 01, Dual Core
+		                // 02, Quad Core
+		                // 03 - 07, Reserved
+		GATY, 2,        // VGA Type                             ; BDh.6-7
+		                // 00, UMA
+		                // 01. Discrete
+		                // 02 - 03, Reserved
+		Offset(0xBE),
+		BOL0, 1,        // Batt0 (0=OffLine, 1=OnLine)          ; BEh.0
+		BOL1, 1,        // Batt1 (0=OffLine, 1=OnLine)          ; BEh.1
+		, 2,            // Reserved                             ; BEh.2-3
+		BCC0, 1,        // Batt0 be charging (1=Charging)       ; BEh.4
+		BCC1, 1,        // Batt1 be charging (1=Charging)       ; BEh.5
+		, 2,            // Reserved                             ; BEh.6-7
+		BPU0, 1,        // Batt0 (1=PowerUp)                    ; BFh.0
+		BPU1, 1,        // Batt1 (1=PowerUp)                    ; BFh.1
+		, 2,            // Reserved                             ; BFh.2-3
+		BOS0, 1,        // Batt0 (1=OnSMBUS)                    ; BFh.4
+		BOS1, 1,        // Batt1 (1=OnSMBUS)                    ; BFh.5
+		, 2,            // Reserved                             ; BFh.6-7
+		Offset(0xC0),
+		BTY0, 1,        // Batt Type (0=NiMh, 1=LiIon)          ; C0h.0
+		BAM0, 1,        // Battery mode (0=mA, 1=mW)            ; C0h.1
+		BAL0, 1,        // Low Battery                          ; C0h.2
+		, 1,            // Reserved                             ; C0h.3
+		BMF0, 3,        // Battery Manufacturer                 ; C0h.4-6
+		                // 001 : Sanyo
+		                // 010 : Sony
+		                // 100 : Pansonic
+		                // 101 : CPT
+		, 1,            // Reserved                             ; C0h.7
+		BST0, 8,        // Battery Status                       ; C1h
+                        // Bit0 : Discharging
+                        // Bit1 : Charging
+                        // Bit2 : Discharg and Critical Low
+		                // Bit3-7 : Reserved
+		BRC0, 16,       // Batt Remaining Capacity              ; C2h, C3h
+		BSN0, 16,       // Batt Serial Number                   ; C4h, C5h
+		BPV0, 16,       // Batt Present Voltage                 ; C6h, C7h
+		BDV0, 16,       // Batt Design Voltage                  ; C8h, C9h
+		BDC0, 16,       // Batt Design Capacity                 ; CAh, CBh
+		BFC0, 16,       // Batt Last Full Charge Capacity       ; CCh, CDh
+		GAU0, 8,        // Batt Gasgauge                        ; CEh
+		CYC0, 8,        // Batt Cycle Counter                   ; CFh
+		BPC0, 16,       // Batt Current                         ; D0h, D1h
+		BAC0, 16,       // Batt Average Current                 ; D2h, D3h
+		BTW0, 8,        // Batt Comsuption                      ; D4h
+		BVL0, 8,        // Batt Battery Volt                    ; D5h
+		BTM0, 8,        // Batt Battery Temp                    ; D6h
+		BAT0, 8,        // Batt Average Temp (Degree C)         ; D7h
+		BCG0, 16,       // Batt charge current                  ; D8h, D9h
+		BCT0, 8,        // Batt Current Temp Semple counter     ; DAh
+		BCI0, 8,        // BATT CMD Index for read BATT(SMB)    ; DBh
+		BCM0, 8,        // Count up to Communicate BATT         ; DCh
+		BOT0, 8,        // Count up if BATT over Temp           ; DDh
+		BSSB, 16,       // BATT Battery Status SMB              ; DEh, DFh
+		BOV0, 8,        // BATT Over Voltage Count              ; E0h
+		BCF0, 8,        // BATT Communication Fail Counter      ; E1h
+		BAD0, 8,        // Battery Voltage of ADC               ; E2h
+		BCV1, 16,       // Cell Voltage 1 (mV)                  ; E3h, E4h
+		BCV2, 16,       // Cell Voltage 2 (mV)                  ; E5h, E6h
+		BCV3, 16,       // Cell Voltage 3 (mV)                  ; E7h, E8h
+		BCV4, 16,       // Cell Voltage 4 (mV)                  ; E9h, EAh
+		Offset(0xF4),
+		BMD0, 16,       // Manufacture Date                     ; F4h, F5h
+		                // Batt Day	                            ; BIT[4:0] (Day)
+		                // Batt Month                           ; BIT[9:5] (Month)
+		                // Batt Year                            ; BIT[15:10] (Year)
+		BACV, 16,       // Charging Voltage                     ; F6h, F7h
+		BDN0, 8,        // Battery Cell Number                  ; F8h
+		, 8             // Last byte for Reserved.
+	}
+
+	Method (_CRS, 0, NotSerialized)
+	{
+		Name (ECMD, ResourceTemplate()
+		{
+			IO (Decode16, 0x62, 0x62, 0, 1)
+			IO (Decode16, 0x66, 0x66, 0, 1)
+		})
+		Return (ECMD)
+	}
+
+	Method (_REG, 2, NotSerialized)
+	{
+		// Initialize AC power state
+		Store (ADPT, \PWRS)
+
+		// Initialize LID switch state
+		Store (GP15, \LIDS)
+
+		// Force a read of CPU temperature
+		Store (CTML, Local0)
+	}
+
+
+/*
+ * EC Query Responses
+ *
+ * DTS temperature update    10h
+ * Decrease brightness event 11h
+ * Increase brightness event 12h
+ * Cover lid open            15h
+ * Cover lid close           16h
+ * External device plugged   17h
+ * External device removed   18h
+ * Bluetooth wake up event   19h
+ * Scr expand event          1Bh
+ * Display toggle            1Ch
+ * CPU  fast/slow event      1Dh
+ * Battery in critical low   22h
+ * Battery in low state      23h
+ * Battery pack plug in      25h
+ * Docking in                2Ah
+ * Undock                    2Bh
+ * Power button pressed      32h
+ * AC plug in                37h
+ * AC removed                38h
+ * Modem ring in             3Ah
+ * PME signal active         3Eh
+ * Hotkey make Function      45h
+ * Hotkey break Function     46h
+ */
+
+	// AC Power Connected
+	Method (_Q37, 0, NotSerialized)
+	{
+		Store (One, \PWRS)
+		Notify (AC, 0x80)
+		Notify (BATX, 0x80)
+		// TODO ADD CPU power profile
+		\PNOT ()
+	}
+
+	// AC Power Removed
+	Method (_Q38, 0, NotSerialized)
+	{
+		Store (Zero, \PWRS)
+		Notify (AC, 0x80)
+		Notify (BATX, 0x80)
+		// TODO ADD CPU power profile
+		\PNOT ()
+	}
+
+	// Battery at critical low state
+	Method (_Q22, 0, NotSerialized)
+	{
+		Notify (BATX, 0x80)
+	}
+
+	// Battery insert
+	Method(_Q25, 0, NotSerialized)
+	{
+		Notify(BATX, 0x81)
+		Notify(BATX, 0x80)
+	}
+
+	// Commuation Device Disable/Enable Event
+	Method(_Q60, 0, NotSerialized)
+	{
+		IF(WLEX) //if Wlan exist
+		{
+			//TODO Store(WLAT, LANE)
+		}
+	}
+
+	#include "ac.asl"
+	#include "battery.asl"
+}
diff --git a/src/ec/compal/ene932/acpi/superio.asl b/src/ec/compal/ene932/acpi/superio.asl
new file mode 100644
index 0000000000..db4b4128f1
--- /dev/null
+++ b/src/ec/compal/ene932/acpi/superio.asl
@@ -0,0 +1,57 @@
+/*
+ * 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
+ */
+
+// Scope is \_SB.PCI0.LPCB
+
+Device (SIO) {
+	Name (_UID, 0)
+	Name (_ADR, 0)
+
+
+#ifdef SIO_EC_ENABLE_PS2K
+	Device (PS2K)		// Keyboard
+	{
+		Name (_UID, 0)
+		Name (_ADR, 0)
+		Name (_HID, EISAID("PNP0303"))
+		Name (_CID, EISAID("PNP030B"))
+
+		Method (_STA, 0, NotSerialized) {
+			Return (0x0F)
+		}
+
+		Name (_CRS, ResourceTemplate()
+		{
+			FixedIO (0x60, 0x01)
+			FixedIO (0x64, 0x01)
+			IRQNoFlags () {1}
+		})
+
+		Name (_PRS, ResourceTemplate()
+		{
+			StartDependentFn (0, 0) {
+				FixedIO (0x60, 0x01)
+				FixedIO (0x64, 0x01)
+				IRQNoFlags () {1}
+			}
+			EndDependentFn ()
+		})
+	}
+#endif
+}
diff --git a/src/ec/compal/ene932/chip.h b/src/ec/compal/ene932/chip.h
new file mode 100644
index 0000000000..5d209ffa05
--- /dev/null
+++ b/src/ec/compal/ene932/chip.h
@@ -0,0 +1,35 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 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
+ */
+
+#ifndef _EC_COMPAL_ENE932_CHIP_H
+#define _EC_COMPAL_ENE932_CHIP_H
+
+#include <device/device.h>
+#include <pc80/keyboard.h>
+
+struct chip_operations;
+extern struct chip_operations ec_compal_ene932_ops;
+
+struct ec_compal_ene932_config {
+	struct pc_keyboard keyboard;
+};
+
+#endif /* _EC_COMPAL_ENE932_CHIP_H */
diff --git a/src/ec/compal/ene932/ec.c b/src/ec/compal/ene932/ec.c
new file mode 100644
index 0000000000..c3087e91ce
--- /dev/null
+++ b/src/ec/compal/ene932/ec.c
@@ -0,0 +1,180 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 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
+ */
+
+#ifndef __PRE_RAM__
+
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pnp.h>
+#include <stdlib.h>
+#include <arch/io.h>
+#include <delay.h>
+#include "ec.h"
+#include "chip.h"
+
+/* kbc helper functions from drivers/pc80/keyboard.c. TODO: share functions. */
+static int kbc_input_buffer_empty(void)
+{
+	u32 timeout;
+	for(timeout = KBC_TIMEOUT_IN_MS; timeout && (inb(KBD_STATUS) & KBD_IBF);
+	    timeout--) {
+		mdelay(1);
+	}
+
+	if (!timeout) {
+		printk(BIOS_WARNING,
+		       "Unexpected Keyboard controller input buffer full\n");
+	}
+	return !!timeout;
+}
+
+
+static int kbc_output_buffer_full(void)
+{
+	u32 timeout;
+	for(timeout = KBC_TIMEOUT_IN_MS; timeout && ((inb(KBD_STATUS)
+	    & KBD_OBF) == 0); timeout--) {
+		mdelay(1);
+	}
+
+	if (!timeout) {
+		printk(BIOS_INFO, "Keyboard controller output buffer result timeout\n");
+	}
+	return !!timeout;
+}
+
+int kbc_cleanup_buffers(void)
+{
+	u32 timeout;
+	for(timeout = KBC_TIMEOUT_IN_MS; timeout && (inb(KBD_STATUS)
+	    & (KBD_OBF | KBD_IBF)); timeout--) {
+		mdelay(1);
+		inb(KBD_DATA);
+	}
+
+	if (!timeout) {
+		printk(BIOS_ERR, "Couldn't cleanup the keyboard controller buffers\n");
+		printk(BIOS_ERR, "Status (0x%x): 0x%x, Buffer (0x%x): 0x%x\n",
+				KBD_STATUS, inb(KBD_STATUS), KBD_DATA, inb(KBD_DATA));
+	}
+
+	return !!timeout;
+}
+
+
+/* The ENE 60/64 EC registers are the same comand/status IB/OB KBC pair.
+ * Check status from 64 port before each command.
+ *
+ *  Ex. Get panel ID command C43/D77
+ *  Check IBF empty. Then Write 0x43(CMD) to 0x64 Port
+ *  Check IBF empty. Then Write 0x77(DATA) to 0x60 Port
+ *  Check OBF set. Then Get Data(0x03:panel ID) from 0x60
+ * Different commands return may or maynot respond and may have multiple
+ * bytes. Keep it simple for nor
+ */
+
+u8 ec_kbc_read_ob(void)
+{
+	if (!kbc_output_buffer_full()) return 0;
+	return inb(KBD_DATA);
+}
+
+void ec_kbc_write_cmd(u8 cmd)
+{
+	if (!kbc_input_buffer_empty()) return;
+	outb(cmd, KBD_COMMAND);
+}
+
+void ec_kbc_write_ib(u8 data)
+{
+	if (!kbc_input_buffer_empty()) return;
+	outb(data, KBD_DATA);
+}
+
+
+/*
+ * These functions are for accessing the ENE932 device space, but are not
+ * currently used.
+ */
+/*
+static u8 ec_io_read(u16 addr)
+{
+	outb(addr >> 8, EC_IO_HIGH);
+	outb(addr & 0xff, EC_IO_LOW);
+	return inb(EC_IO_DATA);
+}
+*/
+/*static void ec_write(u16 addr, u8 data)
+{
+	outb(addr >> 8, EC_IO_HIGH);
+	outb(addr & 0xff, EC_IO_LOW;
+	outb(data, EC_IO_DATA);
+}
+*/
+
+#ifndef __SMM__
+static void ene932_init(device_t dev)
+{
+	struct ec_compal_ene932_config *conf = dev->chip_info;
+
+
+	if (!dev->enabled)
+		return;
+
+	printk(BIOS_DEBUG, "Compal ENE932: Initializing keyboard.\n");
+	pc_keyboard_init(&conf->keyboard);
+
+}
+
+
+static void ene932_read_resources(device_t dev)
+{
+	/* This function avoids an error on serial console. */
+}
+
+
+static void ene932_enable_resources(device_t dev)
+{
+	/* This function avoids an error on serial console. */
+}
+
+static struct device_operations ops = {
+	.init             = ene932_init,
+	.read_resources   = ene932_read_resources,
+	.enable_resources = ene932_enable_resources
+};
+
+static struct pnp_info pnp_dev_info[] = {
+        { &ops, 0, 0, { 0, 0 }, }
+};
+
+static void enable_dev(device_t dev)
+{
+	pnp_enable_devices(dev, &pnp_ops, ARRAY_SIZE(pnp_dev_info),
+			   pnp_dev_info);
+}
+
+struct chip_operations ec_compal_ene932_ops = {
+	CHIP_NAME("COMPAL ENE932 EC")
+	.enable_dev = enable_dev
+};
+#endif /* ! __SMM__ */
+#endif /* ! __PRE_RAM__ */
diff --git a/src/ec/compal/ene932/ec.h b/src/ec/compal/ene932/ec.h
new file mode 100644
index 0000000000..879925f539
--- /dev/null
+++ b/src/ec/compal/ene932/ec.h
@@ -0,0 +1,56 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 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
+ */
+
+/*
+ * EC communication interface for COMPAL ENE932 Embedded Controller.
+ */
+
+#ifndef _EC_COMPAL_ENE932_EC_H
+#define _EC_COMPAL_ENE932_EC_H
+
+#define EC_IO 0xfd60 /* Mainboard specific. Could be Kconfig option */
+#define EC_IO_HIGH EC_IO + 1
+#define EC_IO_LOW  EC_IO + 2
+#define EC_IO_DATA EC_IO + 3
+
+/* ENE EC internal address space */
+#define REG_SPI_DATA    0xfeab
+#define REG_SPI_COMMAND 0xfeac
+#define REG_SPI_CONFIG  0xfead
+#define CFG_CSn_FORCE_LOW        (1 << 4)
+#define CFG_COMMAND_WRITE_ENABLE (1 << 3)
+#define CFG_STATUS               (1 << 1)
+
+
+#define KBD_DATA	0x60
+#define KBD_COMMAND	0x64
+#define KBD_STATUS	0x64
+#define   KBD_IBF	(1 << 1) // 1: input buffer full (data ready for ec)
+#define   KBD_OBF	(1 << 0) // 1: output buffer full (data ready for host)
+
+
+/* Wait 400ms for keyboard controller answers */
+#define KBC_TIMEOUT_IN_MS 400
+
+u8 ec_kbc_read_ob(void);
+void ec_kbc_write_cmd(u8 cmd);
+void ec_kbc_write_ib(u8 data);
+int kbc_cleanup_buffers(void);
+
+#endif /* _EC_COMPAL_ENE932_EC_H */