| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2011 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 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 |
| */ |
| |
| /* These devices are created at runtime */ |
| External (\_PR.CPU0, DeviceObj) |
| External (\_PR.CPU1, DeviceObj) |
| External (\_PR.CPU2, DeviceObj) |
| External (\_PR.CPU3, DeviceObj) |
| |
| /* Notify OS to re-read CPU tables, assuming ^2 CPU count */ |
| Method (PNOT) |
| { |
| If (LGreaterEqual (\PCNT, 2)) { |
| Notify (\_PR.CPU0, 0x81) // _CST |
| Notify (\_PR.CPU1, 0x81) // _CST |
| } |
| If (LGreaterEqual (\PCNT, 4)) { |
| Notify (\_PR.CPU2, 0x81) // _CST |
| Notify (\_PR.CPU3, 0x81) // _CST |
| } |
| } |
| |
| /* Notify OS to re-read CPU _PPC limit, assuming ^2 CPU count */ |
| Method (PPCN) |
| { |
| If (LGreaterEqual (\PCNT, 2)) { |
| Notify (\_PR.CPU0, 0x80) // _PPC |
| Notify (\_PR.CPU1, 0x80) // _PPC |
| } |
| If (LGreaterEqual (\PCNT, 4)) { |
| Notify (\_PR.CPU2, 0x80) // _PPC |
| Notify (\_PR.CPU3, 0x80) // _PPC |
| } |
| } |
| |
| /* Notify OS to re-read Throttle Limit tables, assuming ^2 CPU count */ |
| Method (TNOT) |
| { |
| If (LGreaterEqual (\PCNT, 2)) { |
| Notify (\_PR.CPU0, 0x82) // _TPC |
| Notify (\_PR.CPU1, 0x82) // _TPC |
| } |
| If (LGreaterEqual (\PCNT, 4)) { |
| Notify (\_PR.CPU2, 0x82) // _TPC |
| Notify (\_PR.CPU3, 0x82) // _TPC |
| } |
| } |
| |
| /* Return a package containing enabled processor entries */ |
| Method (PPKG) |
| { |
| If (LGreaterEqual (\PCNT, 4)) { |
| Return (Package() {\_PR.CPU0, \_PR.CPU1, \_PR.CPU2, \_PR.CPU3}) |
| } ElseIf (LGreaterEqual (\PCNT, 2)) { |
| Return (Package() {\_PR.CPU0, \_PR.CPU1}) |
| } Else { |
| Return (Package() {\_PR.CPU0}) |
| } |
| } |