diff options
Diffstat (limited to 'src/mainboard/intel/littleplains/acpi/platform.asl')
-rw-r--r-- | src/mainboard/intel/littleplains/acpi/platform.asl | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/src/mainboard/intel/littleplains/acpi/platform.asl b/src/mainboard/intel/littleplains/acpi/platform.asl new file mode 100644 index 0000000000..6ba95ce465 --- /dev/null +++ b/src/mainboard/intel/littleplains/acpi/platform.asl @@ -0,0 +1,60 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007-2009 coresystems GmbH + * Copyright (C) 2012 The Chromium OS Authors. All rights reserved. + * + * 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 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 _WAK method is called on system wakeup */ + +Method(_WAK,1) +{ + Return(Package(){0,0}) +} |