OvmfPkg: PciHostBridgeLib: permit access to the full extended config space

[mirror_edk2.git] / OvmfPkg / Library / PciHostBridgeLib / PciHostBridgeLib.c

diff --git a/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c b/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c
index 582e87dd9ac0d132d324faadd62669dc30e3a3b3..3e02778492a8bd0e2ebb9bdb06ed0940f0b1e8ab 100644 (file)
--- a/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c
+++ b/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c
@@ -16,6 +16,7 @@
 #include <PiDxe.h>\r
 \r
 #include <IndustryStandard/Pci.h>\r
+#include <IndustryStandard/Q35MchIch9.h>\r
 \r
 #include <Protocol/PciHostBridgeResourceAllocation.h>\r
 #include <Protocol/PciRootBridgeIo.h>\r
@@ -139,7 +140,8 @@ InitRootBridge (
   RootBus->Mem.Limit = PcdGet64 (PcdPciMmio32Base) +\r
                        (PcdGet64 (PcdPciMmio32Size) - 1);\r
 \r
-  RootBus->NoExtendedConfigSpace = TRUE;\r
+  RootBus->NoExtendedConfigSpace = (PcdGet16 (PcdOvmfHostBridgePciDevId) !=\r
+                                    INTEL_Q35_MCH_DEVICE_ID);\r
 \r
   DevicePath = AllocateCopyPool (sizeof mRootBridgeDevicePathTemplate,\r
                  &mRootBridgeDevicePathTemplate);\r