| /* |
| * 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 }) |
| } |