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OvmfPkg/LegacyBbs: Add boot entries for VirtIO and NVME devices 

Iterate over the available block devices in much the same way as
BdsLibEnumerateAllBootOption() does, but limiting to those devices
which are PCI-backed, which can be represented in the BbsTable.

One day we might need to extend the BbsTable to allow us to distinguish
between different NVMe namespaces on a device.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20190626113742.819933-3-dwmw2@infradead.org>
This commit is contained in:
David Woodhouse 2019-06-26 12:37:40 +01:00 committed by Laszlo Ersek
parent 0ca6250768
commit 16ec209a41
1 changed files with 152 additions and 5 deletions
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149
OvmfPkg/Csm/LegacyBiosDxe/LegacyBbs.c
View File

@ -144,6 +144,10 @@ LegacyBiosBuildBbs (
HDD_INFO *HddInfo;
UINTN HddIndex;
UINTN Index;
EFI_HANDLE *BlockIoHandles;
UINTN NumberBlockIoHandles;
UINTN BlockIndex;
EFI_STATUS Status;
//
// First entry is floppy.
@ -252,8 +256,151 @@ LegacyBiosBuildBbs (
}
}
return EFI_SUCCESS;
//
// Add non-IDE block devices
//
BbsIndex = HddIndex * 2 + 1;
Status = gBS->LocateHandleBuffer (
ByProtocol,
&gEfiBlockIoProtocolGuid,
NULL,
&NumberBlockIoHandles,
&BlockIoHandles
);
if (!EFI_ERROR (Status)) {
UINTN Removable;
EFI_BLOCK_IO_PROTOCOL *BlkIo;
EFI_PCI_IO_PROTOCOL *PciIo;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
EFI_DEVICE_PATH_PROTOCOL *DevicePathNode;
EFI_HANDLE PciHandle;
UINTN SegNum;
UINTN BusNum;
UINTN DevNum;
UINTN FuncNum;
for (Removable = 0; Removable < 2; Removable++) {
for (BlockIndex = 0; BlockIndex < NumberBlockIoHandles; BlockIndex++) {
Status = gBS->HandleProtocol (
BlockIoHandles[BlockIndex],
&gEfiBlockIoProtocolGuid,
(VOID **) &BlkIo
);
if (EFI_ERROR (Status)) {
continue;
}
//
// Skip the logical partitions
//
if (BlkIo->Media->LogicalPartition) {
continue;
}
//
// Skip the fixed block io then the removable block io
//
if (BlkIo->Media->RemovableMedia == ((Removable == 0) ? FALSE : TRUE)) {
continue;
}
//
// Get Device Path
//
Status = gBS->HandleProtocol (
BlockIoHandles[BlockIndex],
&gEfiDevicePathProtocolGuid,
(VOID **) &DevicePath
);
if (EFI_ERROR (Status)) {
continue;
}
//
// Skip ATA devices as they have already been handled
//
DevicePathNode = DevicePath;
while (!IsDevicePathEnd (DevicePathNode)) {
if (DevicePathType (DevicePathNode) == MESSAGING_DEVICE_PATH &&
DevicePathSubType (DevicePathNode) == MSG_ATAPI_DP) {
break;
}
DevicePathNode = NextDevicePathNode (DevicePathNode);
}
if (!IsDevicePathEnd (DevicePathNode)) {
continue;
}
//
// Locate which PCI device
//
Status = gBS->LocateDevicePath (
&gEfiPciIoProtocolGuid,
&DevicePath,
&PciHandle
);
if (EFI_ERROR (Status)) {
continue;
}
Status = gBS->HandleProtocol (
PciHandle,
&gEfiPciIoProtocolGuid,
(VOID **) &PciIo
);
if (EFI_ERROR (Status)) {
continue;
}
Status = PciIo->GetLocation (
PciIo,
&SegNum,
&BusNum,
&DevNum,
&FuncNum
);
if (EFI_ERROR (Status)) {
continue;
}
if (SegNum != 0) {
DEBUG ((DEBUG_WARN, "CSM cannot use PCI devices in segment %Lu\n",
(UINT64) SegNum));
continue;
}
DEBUG ((DEBUG_INFO, "Add Legacy Bbs entry for PCI %d/%d/%d\n",
BusNum, DevNum, FuncNum));
BbsTable[BbsIndex].Bus = BusNum;
BbsTable[BbsIndex].Device = DevNum;
BbsTable[BbsIndex].Function = FuncNum;
BbsTable[BbsIndex].Class = 1;
BbsTable[BbsIndex].SubClass = 0x80;
BbsTable[BbsIndex].StatusFlags.OldPosition = 0;
BbsTable[BbsIndex].StatusFlags.Reserved1 = 0;
BbsTable[BbsIndex].StatusFlags.Enabled = 0;
BbsTable[BbsIndex].StatusFlags.Failed = 0;
BbsTable[BbsIndex].StatusFlags.MediaPresent = 0;
BbsTable[BbsIndex].StatusFlags.Reserved2 = 0;
BbsTable[BbsIndex].DeviceType = BBS_HARDDISK;
BbsTable[BbsIndex].BootPriority = BBS_UNPRIORITIZED_ENTRY;
BbsIndex++;
if (BbsIndex == MAX_BBS_ENTRIES) {
Removable = 2;
break;
}
}
}
FreePool (BlockIoHandles);
}
return EFI_SUCCESS;
}