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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
*/
/* 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})
}
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