[coreboot] Patch merged into coreboot/master: 9c3d112 ASROCK Fam14 DSDT: Add OSC method
gerrit at coreboot.org
gerrit at coreboot.org
Sun Mar 17 19:54:24 CET 2013
the following patch was just integrated into master:
commit 9c3d112bb686f1c044aeb501ef810e2fb8c9310e
Author: Mike Loptien <mike.loptien at se-eng.com>
Date: Fri Mar 15 13:22:32 2013 -0600
ASROCK Fam14 DSDT: Add OSC method
The _OSC method is used to tell the OS what capabilities
it can take control over from the firmware. This method
is described in chapter 6.2.9 of the ACPI spec v3.0.
The method takes 4 inputs (UUID, Rev ID, Input Count,
and Capabilities Buffer) and returns a Capabilites
Buffer the same size as the input Buffer. This Buffer
is generally 3 Dwords long consisting of an Errors
Dword, a Supported Capabilities Dword, and a Control
Dword. The OS will request control of certain
capabilities and the firmware must grant or deny control
of those features. We do not want to have control over
anything so let the OS control as much as it can.
The _OSC method is required for PCIe devices and dmesg
checks for its existence and issues an error if it is
not found.
This is the same change made to Persimmon with Change-ID
I149428:
http://review.coreboot.org/#/c/2684/
Change-Id: I2701d915338294bdade2ad334b22a51db980892e
Signed-off-by: Mike Loptien <mike.loptien at se-eng.com>
Reviewed-on: http://review.coreboot.org/2739
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer at coreboot.org>
Build-Tested: build bot (Jenkins) at Fri Mar 15 20:41:36 2013, giving +1
Reviewed-By: Stefan Reinauer <stefan.reinauer at coreboot.org> at Sun Mar 17 19:54:23 2013, giving +2
See http://review.coreboot.org/2739 for details.
-gerrit
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