[coreboot-gerrit] Patch set updated for coreboot: 9a5c1ef Lenovo X60: dsdt.asl: Add _OSC method
Denis Carikli (GNUtoo@no-log.org)
gerrit at coreboot.org
Fri Mar 29 08:34:17 CET 2013
Denis Carikli (GNUtoo at no-log.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/2938
-gerrit
commit 9a5c1ef264567a4bdd7a1ddaeac592cc5a1e19bd
Author: Denis 'GNUtoo' Carikli <GNUtoo at no-log.org>
Date: Thu Mar 28 14:24:39 2013 +0100
Lenovo X60: dsdt.asl: Add _OSC method
This commit was modelled after the following commit:
00a0e76bc5ffaba01c98f1c1384b0499516fdaef
(AMD Fam14 DSDT: Add OSC method)
Tested under the parabola GNU/Linux distribution:
Before that change:
$ dmesg | egrep -e OSC -e ASPM
[ 0.108036] pci_root PNP0A08:00: ACPI _OSC support notification failed, disabling PCIe ASPM
[ 0.108040] pci_root PNP0A08:00: Unable to request _OSC control (_OSC support mask: 0x08)
[ 0.118089] ACPI _OSC control for PCIe not granted, disabling ASPM
[ 16.874569] e1000e 0000:01:00.0: Disabling ASPM L0s L1
With that change:
$ dmesg | egrep -e OSC -e ASPM
[ 0.107962] pci_root PNP0A08:00: Requesting ACPI _OSC control (0x1d)
[ 0.108003] pci_root PNP0A08:00: ACPI _OSC control (0x1d) granted
[ 0.111052] pci 0000:01:00.0: disabling ASPM on pre-1.1 PCIe device. You can enable it with 'pcie_aspm=force'
[ 17.537970] e1000e 0000:01:00.0: Disabling ASPM L0s L1
Change-Id: I1caffa44eea447d553c01caaf431f2db241ea5ea
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo at no-log.org>
---
src/mainboard/lenovo/x60/dsdt.asl | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/src/mainboard/lenovo/x60/dsdt.asl b/src/mainboard/lenovo/x60/dsdt.asl
index f32a220..d3a36c0 100644
--- a/src/mainboard/lenovo/x60/dsdt.asl
+++ b/src/mainboard/lenovo/x60/dsdt.asl
@@ -45,6 +45,16 @@ DefinitionBlock(
{
#include <northbridge/intel/i945/acpi/i945.asl>
#include <southbridge/intel/i82801gx/acpi/ich7.asl>
+
+ /* Operating System Capabilities Method */
+ Method(_OSC, 4)
+ { /* Check for proper PCI/PCIe UUID */
+ If(LEqual(Arg0,ToUUID("33DB4D5B-1FF7-401C-9657-7441C03DD766")))
+ {
+ /* Let OS control everything */
+ Return (Arg3)
+ }
+ }
}
}
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