diff options
| -rw-r--r-- | MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c b/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c index 9e7ac74eb7..f46025e2f6 100644 --- a/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c +++ b/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c @@ -1,7 +1,7 @@ /** @file
PCI emumeration support functions implementation for PCI Bus module.
-Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -1770,14 +1770,19 @@ PciParseBar ( // some device implement MMIO bar with 0 length, need to treat it as no-bar
//
PciIoDevice->PciBar[BarIndex].BarType = PciBarTypeUnknown;
+ return Offset + 4;
}
- return Offset + 4;
}
//
// Fix the length to support some spefic 64 bit BAR
//
- Value |= ((UINT32)(-1) << HighBitSet32 (Value));
+ if (Value == 0) {
+ DEBUG ((EFI_D_INFO, "[PciBus]BAR probing for upper 32bit of MEM64 BAR returns 0, change to 0xFFFFFFFF.\n"));
+ Value = (UINT32) -1;
+ } else {
+ Value |= ((UINT32)(-1) << HighBitSet32 (Value));
+ }
//
// Calculate the size of 64bit bar
|