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/*
* 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)
}
}
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