/* * 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. */ /* 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) } }