diff options
| -rw-r--r-- | MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c | 6 | ||||
| -rw-r--r-- | MdeModulePkg/Bus/Pci/PciBusDxe/PciIo.c | 6 |
2 files changed, 8 insertions, 4 deletions
diff --git a/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c b/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c index 620933779c..ccec37b287 100644 --- a/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c +++ b/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c @@ -1130,8 +1130,12 @@ DetermineDeviceAttribute ( if (EFI_ERROR (Status)) {
return Status;
}
+ //
+ // Assume the PCI Root Bridge supports DAC
+ //
PciIoDevice->Supports |= (EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE |
- EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM);
+ EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM |
+ EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE);
} else {
diff --git a/MdeModulePkg/Bus/Pci/PciBusDxe/PciIo.c b/MdeModulePkg/Bus/Pci/PciBusDxe/PciIo.c index e4bde1ebe9..64f1f1b7c8 100644 --- a/MdeModulePkg/Bus/Pci/PciBusDxe/PciIo.c +++ b/MdeModulePkg/Bus/Pci/PciBusDxe/PciIo.c @@ -1305,11 +1305,11 @@ ModifyRootBridgeAttributes ( }
//
- // Mask off EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE &
- // EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM, which are not supported by PCI root bridge.
+ // Mask off attributes not supported by PCI root bridge.
//
Attributes &= ~(UINT64)(EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE |
- EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM);
+ EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM |
+ EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE);
//
// Record the new attribute of the Root Bridge
|