04008a9c14
Use acpigen_write_processor_cnot to implement notifications to the CPU. Automatically generate \PPKG in SSDT. Change-Id: Iecc54e94484f5f11e0ba8ef6d1d844276e484b4d Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/29886 Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
145 lines
3.1 KiB
Plaintext
145 lines
3.1 KiB
Plaintext
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2011 The Chromium OS Authors. All rights reserved.
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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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// Thermal Zone
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External (\PPKG, MethodObj)
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#define HAVE_THERMALZONE
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Scope (\_TZ)
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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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// Ignore critical temps for the first few reads
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// at boot to prevent unexpected shutdown
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Name (IRDC, 4)
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Name (CRDC, 0)
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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 (_TMP, 0, Serialized)
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{
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// Get CPU Temperature from the Embedded Controller
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Store (\_SB.PCI0.LPCB.EC0.CPUT, Local0)
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// Re-read from EC if the temperature is very high to
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// avoid OS shutdown if we got a bad reading.
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If (LGreaterEqual (Local0, \TCRT)) {
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Store (\_SB.PCI0.LPCB.EC0.CPUT, Local0)
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If (LGreaterEqual (Local0, \TCRT)) {
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// Check if this is an early read
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If (LLess (CRDC, IRDC)) {
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Store (0, Local0)
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}
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}
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}
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// Keep track of first few reads by the OS
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If (LLess (CRDC, IRDC)) {
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Increment (CRDC)
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}
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// Invalid reading, ensure fan is spinning
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If (LGreaterEqual (Local0, 0x80)) {
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Return (CTOK (\F4ON))
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}
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Return (CTOK (Local0))
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}
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Method (_AC0) {
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If (LLessEqual (\FLVL, 0)) {
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Return (CTOK (\F0OF))
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} Else {
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Return (CTOK (\F0ON))
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}
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}
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Method (_AC1) {
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If (LLessEqual (\FLVL, 1)) {
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Return (CTOK (\F1OF))
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} Else {
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Return (CTOK (\F1ON))
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}
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}
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Method (_AC2) {
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If (LLessEqual (\FLVL, 2)) {
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Return (CTOK (\F2OF))
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} Else {
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Return (CTOK (\F2ON))
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}
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}
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Method (_AC3) {
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If (LLessEqual (\FLVL, 3)) {
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Return (CTOK (\F3OF))
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} Else {
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Return (CTOK (\F3ON))
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}
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}
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Method (_AC4) {
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If (LLessEqual (\FLVL, 4)) {
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Return (CTOK (\F4OF))
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} Else {
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Return (CTOK (\F4ON))
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}
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}
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Name (_AL0, Package () { \_SB.PCI0.LPCB.EC0.FAN0 })
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Name (_AL1, Package () { \_SB.PCI0.LPCB.EC0.FAN1 })
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Name (_AL2, Package () { \_SB.PCI0.LPCB.EC0.FAN2 })
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Name (_AL3, Package () { \_SB.PCI0.LPCB.EC0.FAN3 })
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Name (_AL4, Package () { \_SB.PCI0.LPCB.EC0.FAN4 })
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}
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}
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