diff options
| -rw-r--r-- | src/southbridge/amd/cimx/sb800/acpi/fch.asl | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/southbridge/amd/cimx/sb800/acpi/fch.asl b/src/southbridge/amd/cimx/sb800/acpi/fch.asl index 960cc15664..1e9ca640ca 100644 --- a/src/southbridge/amd/cimx/sb800/acpi/fch.asl +++ b/src/southbridge/amd/cimx/sb800/acpi/fch.asl @@ -22,11 +22,20 @@ /* Operating System Capabilities Method */ Method(_OSC,4) -{ /* Check for proper PCI/PCIe UUID */ +{ + // Create DWord-addressable fields from the Capabilities Buffer + CreateDWordField(Arg3,0,CDW1) + CreateDWordField(Arg3,4,CDW2) + CreateDWordField(Arg3,8,CDW3) + + /* Check for proper PCI/PCIe UUID */ If(LEqual(Arg0,ToUUID("33DB4D5B-1FF7-401C-9657-7441C03DD766"))) { /* Let OS control everything */ Return (Arg3) + } Else { + Or(CDW1,4,CDW1) // Unrecognized UUID + Return(Arg3) } } |