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clear the correct BAR register. Because for P2P device, only register from 0x10 to 0x14 is BAR register. 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10805 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
niruiyu 2010-08-18 12:21:21 +00:00
parent cfbc1a7537
commit 6989af7168
1 changed files with 8 additions and 2 deletions
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10
MdeModulePkg/Bus/Pci/PciBusDxe/PciOptionRomSupport.c
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@ -1,7 +1,7 @@
/** @file
PCI Rom supporting funtions implementation for PCI Bus module.
Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2010, 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
@ -546,6 +546,7 @@ RomDecode (
{
UINT32 Value32;
UINT32 Offset;
UINT32 OffsetMax;
EFI_PCI_IO_PROTOCOL *PciIo;
PciIo = &PciDevice->PciIo;
@ -553,7 +554,12 @@ RomDecode (
//
// Clear all bars
//
for (Offset = 0x10; Offset <= 0x24; Offset += sizeof (UINT32)) {
OffsetMax = 0x24;
if (IS_PCI_BRIDGE(&PciDevice->Pci)) {
OffsetMax = 0x14;
}
for (Offset = 0x10; Offset <= OffsetMax; Offset += sizeof (UINT32)) {
PciIo->Pci.Write (PciIo, EfiPciIoWidthUint32, Offset, 1, &gAllZero);
}