cc6b924042
There seem to be a significant number of shutdowns during suspend resume tests related to critical temperatures. It is possible that we are getting a bad reading from PECI and shutting down prematurely in some cases. If we get a reading that is above critical then wait for the EC to re-poll and then re-check the temperature in case it was just a bad reading. Also add some ACPI debug messages when this happens. Original-Change-Id: I0ab7bdcc50d133981c0f36fc696b06d4a1d939a7 Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/66937 Reviewed-by: Aaron Durbin <adurbin@chromium.org> (cherry picked from commit a39d7b11dd7b2af37fc2658542d56b32e3966ed4) Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Change-Id: Ib612266511d90749ec6507f8467c71523ee8fb95 Reviewed-on: https://chromium-review.googlesource.com/66939 Tested-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Commit-Queue: Duncan Laurie <dlaurie@chromium.org> (cherry picked from commit e98da983dca7819490464bddf08b9c53f28d2712) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6457 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
137 lines
3.0 KiB
Plaintext
137 lines
3.0 KiB
Plaintext
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2012 Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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// Thermal Zone
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Scope (\_TZ)
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{
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// Handler for throttle requests on this platform
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// 0 = Stop throttling
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// 1 = Start throttling
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Method (THRT, 1, Serialized)
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{
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If (LEqual (Arg0, 0)) {
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/* Disable Power Limit */
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\_SB.PCI0.MCHC.CTLD ()
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} Else {
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/* Enable Power Limit */
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\_SB.PCI0.MCHC.CTLE (\F0PW)
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}
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}
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ThermalZone (THRM)
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{
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Name (_TC1, 0x02)
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Name (_TC2, 0x05)
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// Thermal zone polling frequency: 10 seconds
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Name (_TZP, 100)
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// Thermal sampling period for passive cooling: 2 seconds
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Name (_TSP, 20)
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// Convert from Degrees C to 1/10 Kelvin for ACPI
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Method (CTOK, 1) {
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// 10th of Degrees C
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Multiply (Arg0, 10, Local0)
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// Convert to Kelvin
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Add (Local0, 2732, Local0)
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Return (Local0)
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}
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// Threshold for OS to shutdown
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Method (_CRT, 0, Serialized)
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{
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Return (CTOK (\TCRT))
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}
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// Threshold for passive cooling
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Method (_PSV, 0, Serialized)
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{
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Return (CTOK (\TPSV))
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}
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// Processors used for passive cooling
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Method (_PSL, 0, Serialized)
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{
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Return (\PPKG ())
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}
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Method (TCHK, 0, Serialized)
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{
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// Get Temperature from TIN# set in NVS
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Store (\_SB.PCI0.LPCB.EC0.TINS (TMPS), Local0)
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// Check for sensor not calibrated
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If (LEqual (Local0, \_SB.PCI0.LPCB.EC0.TNCA)) {
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Return (CTOK(0))
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}
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// Check for sensor not present
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If (LEqual (Local0, \_SB.PCI0.LPCB.EC0.TNPR)) {
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Return (CTOK(0))
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}
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// Check for sensor not powered
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If (LEqual (Local0, \_SB.PCI0.LPCB.EC0.TNOP)) {
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Return (CTOK(0))
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}
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// Check for sensor bad reading
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If (LEqual (Local0, \_SB.PCI0.LPCB.EC0.TBAD)) {
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Return (CTOK(0))
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}
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// Adjust by offset to get Kelvin
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Add (\_SB.PCI0.LPCB.EC0.TOFS, Local0, Local0)
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// Convert to 1/10 Kelvin
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Multiply (Local0, 10, Local0)
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Return (Local0)
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}
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Method (_TMP, 0, Serialized)
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{
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// Get temperature from EC in deci-kelvin
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Store (TCHK (), Local0)
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// Critical temperature in deci-kelvin
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Store (CTOK (\TCRT), Local1)
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If (LGreaterEqual (Local0, Local1)) {
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Store ("CRITICAL TEMPERATURE", Debug)
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Store (Local0, Debug)
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// Wait 1 second for EC to re-poll
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Sleep (1000)
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// Re-read temperature from EC
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Store (TCHK (), Local0)
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Store ("RE-READ TEMPERATURE", Debug)
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Store (Local0, Debug)
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}
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Return (Local0)
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}
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}
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}
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