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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.
*
* 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
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)
}
// Notify the Batteries
Notify(BAT1, 0x80) // Execute BAT1 _BST
Notify(BAT2, 0x80) // Execute BAT2 _BST
}
/* 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
}
}
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