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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)
{
// 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})
}
/* 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
\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(61) // TODO
}
/* SMM power state and C4-on-C3 settings need to be updated */
// TRAP(43) // TODO
}
}
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