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authorDuncan Laurie <dlaurie@chromium.org>2013-11-04 17:28:19 -0800
committerAaron Durbin <adurbin@google.com>2014-04-30 23:12:03 +0200
commit93966e859234d4aca84a78b45933a74e973497c5 (patch)
tree833cd28349b5e34dd8e20001a9d9ae48e5722040
parent053bd0753bc4433236ed21c1d4ce5bf5842bb434 (diff)
downloadcoreboot-93966e859234d4aca84a78b45933a74e973497c5.tar.xz
baytrail: Add default _OSC method
This is needed to let the kernel know it can control everything and not to disable features. BUG=chrome-os-partner:23505 BRANCH=rambi TEST=build and boot on rambi Change-Id: I40ff15bb931a9be7c31509ec84489083b5af0a82 Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/175629 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/4939 Tested-by: build bot (Jenkins)
-rw-r--r--src/soc/intel/baytrail/acpi/southcluster.asl17
1 files changed, 17 insertions, 0 deletions
diff --git a/src/soc/intel/baytrail/acpi/southcluster.asl b/src/soc/intel/baytrail/acpi/southcluster.asl
index af5dcfee56..87b5b6e386 100644
--- a/src/soc/intel/baytrail/acpi/southcluster.asl
+++ b/src/soc/intel/baytrail/acpi/southcluster.asl
@@ -193,3 +193,20 @@ Device (PDRC)
Return(PDRS)
}
}
+
+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)
+ }
+}