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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2016 Intel Corp.
*
* 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.
*/
#define PCI_OSC_UUID "33DB4D5B-1FF7-401C-9657-7441C03DD766"
Scope (\_SB.PCI0) {
Method (_OSC, 4) {
/* Check for proper GUID */
If (LEqual (Arg0, ToUUID (PCI_OSC_UUID))) {
/* Let OS control everything */
Return (Arg3)
} Else {
/* Unrecognized UUID */
CreateDWordField (Arg3, 0, CDW1)
Or (CDW1, 4, CDW1)
Return (Arg3)
}
}
}
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