google/auron: Add mainboard

Add the Google Auron Broadwell Reference Mainboard. It is based
on the Google Peppy mainboard. It was merged from the following
chromium.org commit:  d20a1d1a22d64546a5d8761b18ab29732ec0b848

Change-Id: I716a79e198e91c428bd965fcd03665c2c7067602
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: http://review.coreboot.org/10500
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

1 files changed, 34 insertions, 7 deletions

diff --git a/src/mainboard/google/auron/acpi/thermal.asl b/src/mainboard/google/auron/acpi/thermal.asl
index 0533048782..28394978b1 100644
--- a/src/mainboard/google/auron/acpi/thermal.asl
+++ b/src/mainboard/google/auron/acpi/thermal.asl
@@ -1,7 +1,7 @@
 /*
  * This file is part of the coreboot project.
  *
- * Copyright (C) 2012 Google Inc.
+ * 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
@@ -17,6 +17,8 @@
  * Foundation, Inc.
  */
 
+#include <mainboard/google/auron/thermal.h>
+
 // Thermal Zone
 
 Scope (\_TZ)
@@ -61,7 +63,7 @@ Scope (\_TZ)
 			Return (\PPKG ())
 		}
 
-		Method (_TMP, 0, Serialized)
+		Method (TCHK, 0, Serialized)
 		{
 			// Get Temperature from TIN# set in NVS
 			Store (\_SB.PCI0.LPCB.EC0.TINS (TMPS), Local0)
@@ -94,21 +96,46 @@ Scope (\_TZ)
 			Return (Local0)
 		}
 
+		Method (_TMP, 0, Serialized)
+		{
+			// Get temperature from EC in deci-kelvin
+			Store (TCHK (), Local0)
+
+			// Critical temperature in deci-kelvin
+			Store (CTOK (\TCRT), Local1)
+
+			If (LGreaterEqual (Local0, Local1)) {
+				Store ("CRITICAL TEMPERATURE", Debug)
+				Store (Local0, Debug)
+
+				// Wait 1 second for EC to re-poll
+				Sleep (1000)
+
+				// Re-read temperature from EC
+				Store (TCHK (), Local0)
+
+				Store ("RE-READ TEMPERATURE", Debug)
+				Store (Local0, Debug)
+			}
+
+			Return (Local0)
+		}
+
 		/* CTDP Down */
 		Method (_AC0) {
 			If (LLessEqual (\FLVL, 0)) {
-				Return (CTOK (\F0OF))
+				Return (CTOK (CTL_TDP_THRESHOLD_OFF))
 			} Else {
-				Return (CTOK (\F0ON))
+				Return (CTOK (CTL_TDP_THRESHOLD_ON))
 			}
 		}
 
 		/* CTDP Nominal */
 		Method (_AC1) {
 			If (LLessEqual (\FLVL, 1)) {
-				Return (CTOK (\F1OF))
+				Return (CTOK (CTL_TDP_THRESHILD_NORMAL))
 			} Else {
-				Return (CTOK (\F1ON))
+				Return (CTOK (CTL_TDP_THRESHILD_NORMAL))
 			}
 		}
 
@@ -128,7 +155,7 @@ Scope (\_TZ)
 				Store (0, \FLVL)
 
 				/* Enable Power Limit */
-				\_SB.PCI0.MCHC.CTLE (\F0PW)
+				\_SB.PCI0.MCHC.CTLE (CTL_TDP_POWER_LIMIT)
 
 				Notify (\_TZ.THRM, 0x81)
 			}