sravan/system76-edk2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Update the PCI bus driver to correctly set the EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM attribute of PCI IO. Per UEFI spec, this attribute is used to determine if the ROM image is from the ROM BAR or from a platform specific location.

Browse Source 
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11159 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
rsun3
2010-12-14 02:33:15 +00:00
parent f92d103109
commit 4ed4e19c08
4 changed files with 17 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c
View File

@@ -940,6 +940,15 @@ PciSetDeviceAttribute (
EFI_PCI_IO_ATTRIBUTE_BUS_MASTER );
} else {
//
// When this attribute is clear, the RomImage and RomSize fields in the PCI IO were
// initialized based on the PCI option ROM found through the ROM BAR of the PCI controller.
// When this attribute is set, the PCI option ROM described by the RomImage and RomSize
// fields is not from the the ROM BAR of the PCI controller.
//
if (!PciIoDevice->EmbeddedRom) {
Attributes |= EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM;
}
PciIoDevice->Attributes = Attributes;
}
}