78 lines
2.1 KiB
Text
78 lines
2.1 KiB
Text
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/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2011 Google Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; version 2 of
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* 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,
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* MA 02110-1301 USA
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*/
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/* These devices are created at runtime */
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External (\_PR.CPU0, DeviceObj)
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External (\_PR.CPU1, DeviceObj)
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External (\_PR.CPU2, DeviceObj)
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External (\_PR.CPU3, DeviceObj)
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/* Notify OS to re-read CPU tables, assuming ^2 CPU count */
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Method (PNOT)
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{
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If (LGreaterEqual (\PCNT, 2)) {
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Notify (\_PR.CPU0, 0x81) // _CST
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Notify (\_PR.CPU1, 0x81) // _CST
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}
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If (LGreaterEqual (\PCNT, 4)) {
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Notify (\_PR.CPU2, 0x81) // _CST
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Notify (\_PR.CPU3, 0x81) // _CST
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}
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}
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/* Notify OS to re-read CPU _PPC limit, assuming ^2 CPU count */
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Method (PPCN)
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{
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If (LGreaterEqual (\PCNT, 2)) {
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Notify (\_PR.CPU0, 0x80) // _PPC
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Notify (\_PR.CPU1, 0x80) // _PPC
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}
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If (LGreaterEqual (\PCNT, 4)) {
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Notify (\_PR.CPU2, 0x80) // _PPC
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Notify (\_PR.CPU3, 0x80) // _PPC
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}
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}
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/* Notify OS to re-read Throttle Limit tables, assuming ^2 CPU count */
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Method (TNOT)
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{
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If (LGreaterEqual (\PCNT, 2)) {
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Notify (\_PR.CPU0, 0x82) // _TPC
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Notify (\_PR.CPU1, 0x82) // _TPC
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}
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If (LGreaterEqual (\PCNT, 4)) {
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Notify (\_PR.CPU2, 0x82) // _TPC
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Notify (\_PR.CPU3, 0x82) // _TPC
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}
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}
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/* Return a package containing enabled processor entries */
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Method (PPKG)
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{
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If (LGreaterEqual (\PCNT, 4)) {
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Return (Package() {\_PR.CPU0, \_PR.CPU1, \_PR.CPU2, \_PR.CPU3})
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} ElseIf (LGreaterEqual (\PCNT, 2)) {
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Return (Package() {\_PR.CPU0, \_PR.CPU1})
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} Else {
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Return (Package() {\_PR.CPU0})
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}
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}
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