| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2007-2009 coresystems GmbH |
| * |
| * 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 come from the dynamically created CPU SSDT */ |
| External(PDC0) |
| External(PDC1) |
| |
| /* The APM port can be used for generating software SMIs */ |
| |
| OperationRegion (APMP, SystemIO, 0xb2, 2) |
| Field (APMP, ByteAcc, NoLock, Preserve) |
| { |
| APMC, 8, // APM command |
| APMS, 8 // APM status |
| } |
| |
| /* Port 80 POST */ |
| |
| OperationRegion (POST, SystemIO, 0x80, 1) |
| Field (POST, ByteAcc, Lock, Preserve) |
| { |
| DBG0, 8 |
| } |
| |
| /* SMI I/O Trap */ |
| Method(TRAP, 1, Serialized) |
| { |
| Store (Arg0, SMIF) // SMI Function |
| Store (0, TRP0) // Generate trap |
| Return (SMIF) // Return value of SMI handler |
| } |
| |
| /* The _PIC method is called by the OS to choose between interrupt |
| * routing via the i8259 interrupt controller or the APIC. |
| * |
| * _PIC is called with a parameter of 0 for i8259 configuration and |
| * with a parameter of 1 for Local Apic/IOAPIC configuration. |
| */ |
| |
| Method(_PIC, 1) |
| { |
| // Remember the OS' IRQ routing choice. |
| Store(Arg0, PICM) |
| } |
| |
| /* The _PTS method (Prepare To Sleep) is called before the OS is |
| * entering a sleep state. The sleep state number is passed in Arg0 |
| */ |
| |
| Method(_PTS,1) |
| { |
| // Call a trap so SMI can prepare for Sleep as well. |
| // TRAP(0x55) |
| } |
| |
| /* The _WAK method is called on system wakeup */ |
| |
| Method(_WAK,1) |
| { |
| // CPU specific part |
| |
| // Notify PCI Express slots in case a card |
| // was inserted while a sleep state was active. |
| |
| // Are we going to S3? |
| If (LEqual(Arg0, 3)) { |
| // .. |
| } |
| |
| // Are we going to S4? |
| If (LEqual(Arg0, 4)) { |
| // .. |
| } |
| |
| // TODO: Windows XP SP2 P-State restore |
| |
| // TODO: Return Arg0 as second value if S-Arg0 was entered |
| // before. |
| |
| Return(Package(){0,0}) |
| } |
| |
| // Power notification |
| |
| External (\_PR_.CPU0, DeviceObj) |
| External (\_PR_.CPU1, DeviceObj) |
| |
| Method (PNOT) |
| { |
| If (MPEN) { |
| If(And(PDC0, 0x08)) { |
| Notify (\_PR_.CPU0, 0x80) // _PPC |
| |
| If (And(PDC0, 0x10)) { |
| Sleep(100) |
| Notify(\_PR_.CPU0, 0x81) // _CST |
| } |
| } |
| |
| If(And(PDC1, 0x08)) { |
| Notify (\_PR_.CPU1, 0x80) // _PPC |
| If (And(PDC1, 0x10)) { |
| Sleep(100) |
| Notify(\_PR_.CPU1, 0x81) // _CST |
| } |
| } |
| |
| } Else { // UP |
| Notify (\_PR_.CPU0, 0x80) |
| Sleep(0x64) |
| Notify(\_PR_.CPU0, 0x81) |
| } |
| |
| } |
| |
| /* System Bus */ |
| |
| Scope(\_SB) |
| { |
| /* This method is placed on the top level, so we can make sure it's the |
| * first executed _INI method. |
| */ |
| Method(_INI, 0) |
| { |
| /* The DTS data in NVS is probably not up to date. |
| * Update temperature values and make sure AP thermal |
| * interrupts can happen |
| */ |
| |
| // TRAP(71) // TODO |
| |
| /* Determine the Operating System and save the value in OSYS. |
| * We have to do this in order to be able to work around |
| * certain windows bugs. |
| * |
| * OSYS value | Operating System |
| * -----------+------------------ |
| * 2000 | Windows 2000 |
| * 2001 | Windows XP(+SP1) |
| * 2002 | Windows XP SP2 |
| * 2006 | Windows Vista |
| * ???? | Windows 7 |
| */ |
| |
| /* Let's assume we're running at least Windows 2000 */ |
| Store (2000, OSYS) |
| |
| If (CondRefOf(_OSI, Local0)) { |
| /* Linux answers _OSI with "True" for a couple of |
| * Windows version queries. But unlike Windows it |
| * needs a Video repost, so let's determine whether |
| * we're running Linux. |
| */ |
| |
| If (_OSI("Linux")) { |
| Store (1, LINX) |
| } |
| |
| If (_OSI("Windows 2001")) { |
| Store (2001, OSYS) |
| } |
| |
| If (_OSI("Windows 2001 SP1")) { |
| Store (2001, OSYS) |
| } |
| |
| If (_OSI("Windows 2001 SP2")) { |
| Store (2002, OSYS) |
| } |
| |
| If (_OSI("Windows 2006")) { |
| Store (2006, OSYS) |
| } |
| } |
| |
| /* And the OS workarounds start right after we know what we're |
| * running: Windows XP SP1 needs to have C-State coordination |
| * enabled in SMM. |
| */ |
| If (LAnd(LEqual(OSYS, 2001), MPEN)) { |
| // TRAP(61) // TODO |
| } |
| |
| /* SMM power state and C4-on-C3 settings need to be updated */ |
| // TRAP(43) // TODO |
| } |
| } |
| |