Hannah Williams (hannah.williams@intel.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/15021
-gerrit
commit 1e7ed8ab2a3f65b79b1c30795159be3839966e94 Author: Hannah Williams hannah.williams@intel.com Date: Wed May 18 13:45:20 2016 -0700
soc/intel/common: Add _OSC method
Not masking any bits in Operating System Capabilities, which means we support all the capabilities that OS passed in Arg3
Change-Id: Ib87915e18e305db41b52891ac5430201dda64bb5 Signed-off-by: Hannah Williams hannah.williams@intel.com --- src/soc/intel/common/acpi/osc.asl | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+)
diff --git a/src/soc/intel/common/acpi/osc.asl b/src/soc/intel/common/acpi/osc.asl new file mode 100644 index 0000000..749efd8 --- /dev/null +++ b/src/soc/intel/common/acpi/osc.asl @@ -0,0 +1,31 @@ +/* + * 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. + */ + +Method (_OSC, 4) +{ + /* Check for proper GUID */ + If (LEqual (Arg0, ToUUID ("33DB4D5B-1FF7-401C-9657-7441C03DD766"))) + { + /* Let OS control everything */ + Return (Arg3) + } + Else + { + /* Unrecognized UUID */ + CreateDWordField (Arg3, 0, CDW1) + Or (CDW1, 4, CDW1) + Return (Arg3) + } +}