[coreboot-gerrit] [S] Change in coreboot[master]: soc/intel/apl: Hide IPC ACPI device from Windows

[Matt DeVillier (Code Review)]

Attention is currently required from: Sean Rhodes.

Matt DeVillier has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/74892 )

Change subject: soc/intel/apl: Hide IPC ACPI device from Windows
......................................................................

soc/intel/apl: Hide IPC ACPI device from Windows

The IPC device does not have or need any drivers under Windows, so set
the ACPI status to enabled but hidden (0xb). Linux is unaffected as
it does not use the ACPI status function.

Change-Id: I02efb64a845edc6e4fc559e7e99a7825abf4c2aa
Signed-off-by: Matt DeVillier 
---
M src/soc/intel/apollolake/acpi/pmc_ipc.asl
1 file changed, 18 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/92/74892/1

diff --git a/src/soc/intel/apollolake/acpi/pmc_ipc.asl b/src/soc/intel/apollolake/acpi/pmc_ipc.asl
index d90b42e..55585c4 100644
--- a/src/soc/intel/apollolake/acpi/pmc_ipc.asl
+++ b/src/soc/intel/apollolake/acpi/pmc_ipc.asl
@@ -42,5 +42,9 @@

Return (^RBUF)
    	}
+		Method (_STA, 0x0, NotSerialized)
+		{
+			Return(0xb)
+		}
    }
 }