| /* |
| * 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. |
| */ |
| |
| /* 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) |
| { |
| TRAP(0xed) |
| Sleep(1000) |
| |
| Store(0, \_SB.ACFG) |
| |
| // Are we going to S4? |
| If (Lequal(Arg0, 4)) { |
| TRAP(0xe7) |
| TRAP(0xea) |
| } |
| |
| // Are we going to S5? |
| If (Lequal(Arg0, 5)) { |
| TRAP(0xde) |
| } |
| |
| // The 2.6.12.5 ACPI engine seems to optimize the |
| // If(LEqual(Arg0, 5)) path away. This keeps it from doing so: |
| TRAP(Arg0) |
| Store(Arg0, DBG0) |
| // End of ugly OS bug workaround |
| } |
| |
| /* The _WAK method is called on system wakeup */ |
| |
| Method(_WAK,1) |
| { |
| // Enable GPS |
| Store (1, GP11) // GPSE |
| |
| // Wake from S3 or S4? |
| If (LOr(LEqual(Arg0, 3), LEqual(Arg0, 4))) { |
| If (And(CFGD, 0x01000000)) { |
| If (LAnd(And(CFGD, 0xf0), LEqual(OSYS, 2001))) { |
| TRAP(0x3d) |
| } |
| } |
| } |
| |
| // Notify PCI Express slots in case a card |
| // was inserted while a sleep state was active. |
| |
| If (LEqual(RP1D, 0)) { |
| Notify(\_SB.PCI0.RP01, 0) |
| } |
| |
| If (LEqual(RP3D, 0)) { |
| Notify(\_SB.PCI0.RP03, 0) |
| } |
| |
| If (LEqual(RP4D, 0)) { |
| Notify(\_SB.PCI0.RP04, 0) |
| } |
| |
| // Are we coming from S3? |
| If (LEqual(Arg0, 3)) { |
| TRAP(0xeb) |
| TRAP(0x46) |
| } |
| |
| // Are we coming from S4? |
| If (LEqual(Arg0, 4)) { |
| Notify(SLPB, 0x02) |
| If (DTSE) { |
| TRAP(0x47) |
| } |
| } |
| |
| // Windows XP SP2 P-State restore |
| If (LAnd(LEqual(OSYS, 2002), And(CFGD, 1))) { |
| If (LGreater(\_PR.CP00._PPC, 0)) { |
| Subtract(\_PR.CP00._PPC, 1, \_PR.CP00._PPC) |
| PNOT() |
| Add(\_PR.CP00._PPC, 1, \_PR.CP00._PPC) |
| PNOT() |
| } Else { |
| Add(\_PR.CP00._PPC, 1, \_PR.CP00._PPC) |
| PNOT() |
| Subtract(\_PR.CP00._PPC, 1, \_PR.CP00._PPC) |
| PNOT() |
| } |
| } |
| |
| Return(Package(){0,0}) |
| } |
| |
| // Hardcoded for now.. |
| Name (CFGD, 0x113B69F1) |
| |
| /* 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 |
| */ |
| If (DTSE) { |
| TRAP(0x47) |
| } |
| |
| \GOS() |
| |
| /* 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(0x3d) |
| } |
| |
| /* SMM power state and C4-on-C3 settings need to be updated */ |
| // TRAP(43) |
| |
| /* OS Init */ |
| TRAP(0x32) |
| } |
| } |