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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2007-2009 coresystems GmbH
* Copyright (C) 2014 Google Inc.
* Copyright (C) 2015 Intel Corporation.
*
* 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.
*/
/* Enable ACPI _SWS methods */
#include <soc/intel/common/acpi/acpi_wake_source.asl>
/* 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
}
/* IO-Trap at 0x800.
* This is the ACPI->SMI communication interface.
*/
OperationRegion (IO_T, SystemIO, 0x800, 0x10)
Field (IO_T, ByteAcc, NoLock, Preserve)
{
Offset (0x8),
TRP0, 8 /* IO-Trap at 0x808 */
}
/* 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)
{
}
/* The _WAK method is called on system wakeup */
Method (_WAK, 1)
{
Return (Package (){ 0, 0 })
}
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