diff options
Diffstat (limited to 'OvmfPkg')
| -rw-r--r-- | OvmfPkg/Library/PlatformBdsLib/QemuBootOrder.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/OvmfPkg/Library/PlatformBdsLib/QemuBootOrder.c b/OvmfPkg/Library/PlatformBdsLib/QemuBootOrder.c index 9807039f2f..d2d60c389f 100644 --- a/OvmfPkg/Library/PlatformBdsLib/QemuBootOrder.c +++ b/OvmfPkg/Library/PlatformBdsLib/QemuBootOrder.c @@ -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;
}
|