diff options
| author | Hannah Williams <hannah.williams@intel.com> | 2016-05-18 13:45:20 -0700 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-06-20 22:08:54 +0200 |
| commit | f2a50d1231e7c736b526c0583c4fb4186216b3ff (patch) | |
| tree | 3374334e1dcdfa5b750d61e80fed5abc042e9dcc /src/soc/intel/common | |
| parent | 55409ebbb65cd52c4f5c47f0c1232e8bef0cc4a3 (diff) | |
| download | coreboot-f2a50d1231e7c736b526c0583c4fb4186216b3ff.tar.xz | |
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>
Reviewed-on: https://review.coreboot.org/15021
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/soc/intel/common')
| -rw-r--r-- | src/soc/intel/common/acpi/pci_osc.asl | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/soc/intel/common/acpi/pci_osc.asl b/src/soc/intel/common/acpi/pci_osc.asl new file mode 100644 index 0000000000..4179e94ae7 --- /dev/null +++ b/src/soc/intel/common/acpi/pci_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. + */ + +#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) + } + } +} |