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OvmfPkg: QemuBootOrder: recognize virtio-scsi devices 

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13868 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
jljusten 2012-10-18 17:08:01 +00:00
parent 37078a63b1
commit d2bf9913a6
1 changed files with 45 additions and 0 deletions
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45
OvmfPkg/Library/PlatformBdsLib/QemuBootOrder.c
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@ -632,6 +632,51 @@ TranslateOfwNodes (
PciDevFun[0],
PciDevFun[1]
);
} else if (NumNodes >= 4 &&
SubstringEq (OfwNode[1].DriverName, "scsi") &&
SubstringEq (OfwNode[2].DriverName, "channel") &&
SubstringEq (OfwNode[3].DriverName, "disk")
) {
//
// OpenFirmware device path (virtio-scsi disk):
//
// /pci@i0cf8/scsi@7[,3]/channel@0/disk@2,3
// ^ ^ ^ ^ ^
// | | | | LUN
// | | | target
// | | channel (unused, fixed 0)
// | PCI slot[, function] holding SCSI controller
// PCI root at system bus port, PIO
//
// UEFI device path prefix:
//
// PciRoot(0x0)/Pci(0x7,0x0)/Scsi(0x2,0x3)
// -- if PCI function is 0 or absent
// PciRoot(0x0)/Pci(0x7,0x3)/Scsi(0x2,0x3)
// -- if PCI function is present and nonzero
//
UINT32 TargetLun[2];
TargetLun[1] = 0;
NumEntries = sizeof (TargetLun) / sizeof (TargetLun[0]);
if (ParseUnitAddressHexList (
OfwNode[3].UnitAddress,
TargetLun,
&NumEntries
) != RETURN_SUCCESS
) {
return RETURN_UNSUPPORTED;
}
Written = UnicodeSPrintAsciiFormat (
Translated,
*TranslatedSize * sizeof (*Translated), // BufferSize in bytes
"PciRoot(0x0)/Pci(0x%x,0x%x)/Scsi(0x%x,0x%x)",
PciDevFun[0],
PciDevFun[1],
TargetLun[0],
TargetLun[1]
);
} else {
return RETURN_UNSUPPORTED;
}