/**
Complete build of BBS TABLE.
@param Private Legacy BIOS Instance data
@param BbsTable BBS Table passed to 16-bit code
@retval EFI_SUCCESS Removable media not present
**/
EFI_STATUS
LegacyBiosBuildBbs (
IN LEGACY_BIOS_INSTANCE *Private,
IN BBS_TABLE *BbsTable
)
{
UINTN BbsIndex;
HDD_INFO *HddInfo;
UINTN HddIndex;
UINTN Index;
//
// First entry is floppy.
// Next 2*MAX_IDE_CONTROLLER entries are for onboard IDE.
// Next n entries are filled in after each ROM is dispatched.
// Entry filled in if follow BBS spec. See LegacyPci.c
// Next entries are for non-BBS compliant ROMS. They are filled in by
// 16-bit code during Legacy16UpdateBbs invocation. Final BootPriority
// occurs after that invocation.
//
// Floppy
// Set default state.
//
IsHaveMediaInFloppy = HasMediaInFloppy ();
if (IsHaveMediaInFloppy == FLOPPY_PRESENT_WITH_MEDIA) {
BbsTable[0].BootPriority = BBS_UNPRIORITIZED_ENTRY;
} else {
if (IsHaveMediaInFloppy == FLOPPY_PRESENT_NO_MEDIA) {
BbsTable[0].BootPriority = BBS_LOWEST_PRIORITY;
} else {
BbsTable[0].BootPriority = BBS_IGNORE_ENTRY;
}
}
BbsTable[0].Bus = 0xff;
BbsTable[0].Device = 0xff;
BbsTable[0].Function = 0xff;
BbsTable[0].DeviceType = BBS_FLOPPY;
BbsTable[0].Class = 01;
BbsTable[0].SubClass = 02;
BbsTable[0].StatusFlags.OldPosition = 0;
BbsTable[0].StatusFlags.Reserved1 = 0;
BbsTable[0].StatusFlags.Enabled = 0;
BbsTable[0].StatusFlags.Failed = 0;
BbsTable[0].StatusFlags.MediaPresent = 0;
BbsTable[0].StatusFlags.Reserved2 = 0;
//
// Onboard HDD - Note Each HDD controller controls 2 drives
// Master & Slave
//
HddInfo = &Private->IntThunk->EfiToLegacy16BootTable.HddInfo[0];
//
// Get IDE Drive Info
//
LegacyBiosBuildIdeData (Private, &HddInfo, 0);
for (HddIndex = 0; HddIndex < MAX_IDE_CONTROLLER; HddIndex++) {
BbsIndex = HddIndex * 2 + 1;
for (Index = 0; Index < 2; ++Index) {
BbsTable[BbsIndex + Index].Bus = HddInfo[HddIndex].Bus;
BbsTable[BbsIndex + Index].Device = HddInfo[HddIndex].Device;
BbsTable[BbsIndex + Index].Function = HddInfo[HddIndex].Function;
BbsTable[BbsIndex + Index].Class = 01;
BbsTable[BbsIndex + Index].SubClass = 01;
BbsTable[BbsIndex + Index].StatusFlags.OldPosition = 0;
BbsTable[BbsIndex + Index].StatusFlags.Reserved1 = 0;
BbsTable[BbsIndex + Index].StatusFlags.Enabled = 0;
BbsTable[BbsIndex + Index].StatusFlags.Failed = 0;
BbsTable[BbsIndex + Index].StatusFlags.MediaPresent = 0;
BbsTable[BbsIndex + Index].StatusFlags.Reserved2 = 0;
//
// If no controller found or no device found set to ignore
// else set to unprioritized and set device type
//
if (HddInfo[HddIndex].CommandBaseAddress == 0) {
BbsTable[BbsIndex + Index].BootPriority = BBS_IGNORE_ENTRY;
} else {
if (Index == 0) {
if ((HddInfo[HddIndex].Status & (HDD_MASTER_IDE | HDD_MASTER_ATAPI_CDROM | HDD_MASTER_ATAPI_ZIPDISK)) != 0) {
BbsTable[BbsIndex + Index].BootPriority = BBS_UNPRIORITIZED_ENTRY;
if ((HddInfo[HddIndex].Status & HDD_MASTER_IDE) != 0) {
BbsTable[BbsIndex + Index].DeviceType = BBS_HARDDISK;
} else if ((HddInfo[HddIndex].Status & HDD_MASTER_ATAPI_CDROM) != 0) {
BbsTable[BbsIndex + Index].DeviceType = BBS_CDROM;
} else {
//
// for ZIPDISK
//
BbsTable[BbsIndex + Index].DeviceType = BBS_HARDDISK;
}
} else {
BbsTable[BbsIndex + Index].BootPriority = BBS_IGNORE_ENTRY;
}
} else {
if ((HddInfo[HddIndex].Status & (HDD_SLAVE_IDE | HDD_SLAVE_ATAPI_CDROM | HDD_SLAVE_ATAPI_ZIPDISK)) != 0) {
BbsTable[BbsIndex + Index].BootPriority = BBS_UNPRIORITIZED_ENTRY;
if ((HddInfo[HddIndex].Status & HDD_SLAVE_IDE) != 0) {
BbsTable[BbsIndex + Index].DeviceType = BBS_HARDDISK;
} else if ((HddInfo[HddIndex].Status & HDD_SLAVE_ATAPI_CDROM) != 0) {
BbsTable[BbsIndex + Index].DeviceType = BBS_CDROM;
} else {
//
// for ZIPDISK
//
BbsTable[BbsIndex + Index].DeviceType = BBS_HARDDISK;
}
} else {
BbsTable[BbsIndex + Index].BootPriority = BBS_IGNORE_ENTRY;
}
}
}
}
}
//
// add virtio-blk devices
//
{
EFI_STATUS Status;
UINTN NumPciIoHandles;
EFI_HANDLE *PciIoHandles;
BbsIndex = HddIndex * 2 + 1;
//
// scan all handles supporting the PCI IO protocol
//
Status = gBS->LocateHandleBuffer (
ByProtocol,
&gEfiPciIoProtocolGuid,
NULL,
&NumPciIoHandles,
&PciIoHandles
);
if (Status == EFI_SUCCESS) {
UINTN CurPciIo;
for (CurPciIo = 0; CurPciIo < NumPciIoHandles; ++CurPciIo) {
EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *References;
UINTN NumReferences;
UINTN CurRef;
//
// on each handle supporting the PCI IO protocol, see which drivers
// (agents) have a PCI IO protocol interface actually opened
//
Status = gBS->OpenProtocolInformation (
PciIoHandles[CurPciIo],
&gEfiPciIoProtocolGuid,
&References,
&NumReferences
);
if (EFI_ERROR (Status)) {
continue;
}
for (CurRef = 0; CurRef < NumReferences; ++CurRef) {
if (References[CurRef].Attributes & EFI_OPEN_PROTOCOL_BY_DRIVER) {
EFI_COMPONENT_NAME2_PROTOCOL *ComponentName;
CHAR16 *DriverName;
//
// OpenProtocol() enforced non-NULL AgentHandle for this case
//
ASSERT (References[CurRef].AgentHandle != NULL);
//
// Check if the agent owning the open protocol interface can
// provide its name, and if so, whether it's VirtioBlkDxe. For this
// check we don't want a persistent reference to the agent's
// EFI_COMPONENT_NAME2_PROTOCOL instance, therefore we use
// HandleProtocol() instead of OpenProtocol().
//
Status = gBS->HandleProtocol (
References[CurRef].AgentHandle,
&gEfiComponentName2ProtocolGuid,
(VOID **) &ComponentName
);
if (EFI_ERROR (Status)) {
continue;
}
Status = ComponentName->GetDriverName (
ComponentName,
"en",
&DriverName
);
if (Status == EFI_SUCCESS &&
StrCmp (DriverName, L"Virtio Block Driver") == 0) {
break;
}
}
}
if (CurRef < NumReferences) {
EFI_PCI_IO_PROTOCOL *PciIo;
UINTN Segment;
UINTN Bus;
UINTN Device;
UINTN Function;
//
// reference by VirtioBlkDxe found, produce boot entry for device
//
Status = gBS->HandleProtocol (
PciIoHandles[CurPciIo],
&gEfiPciIoProtocolGuid,
(VOID **) &PciIo
);
ASSERT (Status == EFI_SUCCESS);
Status = PciIo->GetLocation (
PciIo,
&Segment,
&Bus,
&Device,
&Function
);
ASSERT (Status == EFI_SUCCESS);
if (Segment == 0) {
BbsTable[BbsIndex].Bus = (UINT32) Bus;
BbsTable[BbsIndex].Device = (UINT32) Device;
BbsTable[BbsIndex].Function = (UINT32) Function;
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;
}
}
FreePool (References);
}
FreePool (PciIoHandles);
}
}
return EFI_SUCCESS;
}
/**
Complete build of BBS TABLE.
@param Private Legacy BIOS Instance data
@param BbsTable BBS Table passed to 16-bit code
@retval EFI_SUCCESS Removable media not present
**/
EFI_STATUS
LegacyBiosBuildBbs (
IN LEGACY_BIOS_INSTANCE *Private,
IN BBS_TABLE *BbsTable
)
{
UINTN BbsIndex;
HDD_INFO *HddInfo;
UINTN HddIndex;
UINTN Index;
//
// First entry is floppy.
// Next 2*MAX_IDE_CONTROLLER entries are for onboard IDE.
// Next n entries are filled in after each ROM is dispatched.
// Entry filled in if follow BBS spec. See LegacyPci.c
// Next entries are for non-BBS compliant ROMS. They are filled in by
// 16-bit code during Legacy16UpdateBbs invocation. Final BootPriority
// occurs after that invocation.
//
// Floppy
// Set default state.
//
IsHaveMediaInFloppy = HasMediaInFloppy ();
if (IsHaveMediaInFloppy == FLOPPY_PRESENT_WITH_MEDIA) {
BbsTable[0].BootPriority = BBS_UNPRIORITIZED_ENTRY;
} else {
if (IsHaveMediaInFloppy == FLOPPY_PRESENT_NO_MEDIA) {
BbsTable[0].BootPriority = BBS_LOWEST_PRIORITY;
} else {
BbsTable[0].BootPriority = BBS_IGNORE_ENTRY;
}
}
BbsTable[0].Bus = 0xff;
BbsTable[0].Device = 0xff;
BbsTable[0].Function = 0xff;
BbsTable[0].DeviceType = BBS_FLOPPY;
BbsTable[0].Class = 01;
BbsTable[0].SubClass = 02;
BbsTable[0].StatusFlags.OldPosition = 0;
BbsTable[0].StatusFlags.Reserved1 = 0;
BbsTable[0].StatusFlags.Enabled = 0;
BbsTable[0].StatusFlags.Failed = 0;
BbsTable[0].StatusFlags.MediaPresent = 0;
BbsTable[0].StatusFlags.Reserved2 = 0;
//
// Onboard HDD - Note Each HDD controller controls 2 drives
// Master & Slave
//
HddInfo = &Private->IntThunk->EfiToLegacy16BootTable.HddInfo[0];
//
// Get IDE Drive Info
//
LegacyBiosBuildIdeData (Private, &HddInfo, 0);
for (HddIndex = 0; HddIndex < MAX_IDE_CONTROLLER; HddIndex++) {
BbsIndex = HddIndex * 2 + 1;
for (Index = 0; Index < 2; ++Index) {
BbsTable[BbsIndex + Index].Bus = HddInfo[HddIndex].Bus;
BbsTable[BbsIndex + Index].Device = HddInfo[HddIndex].Device;
BbsTable[BbsIndex + Index].Function = HddInfo[HddIndex].Function;
BbsTable[BbsIndex + Index].Class = 01;
BbsTable[BbsIndex + Index].SubClass = 01;
BbsTable[BbsIndex + Index].StatusFlags.OldPosition = 0;
BbsTable[BbsIndex + Index].StatusFlags.Reserved1 = 0;
BbsTable[BbsIndex + Index].StatusFlags.Enabled = 0;
BbsTable[BbsIndex + Index].StatusFlags.Failed = 0;
BbsTable[BbsIndex + Index].StatusFlags.MediaPresent = 0;
BbsTable[BbsIndex + Index].StatusFlags.Reserved2 = 0;
//
// If no controller found or no device found set to ignore
// else set to unprioritized and set device type
//
if (HddInfo[HddIndex].CommandBaseAddress == 0) {
BbsTable[BbsIndex + Index].BootPriority = BBS_IGNORE_ENTRY;
} else {
if (Index == 0) {
if ((HddInfo[HddIndex].Status & (HDD_MASTER_IDE | HDD_MASTER_ATAPI_CDROM | HDD_MASTER_ATAPI_ZIPDISK)) != 0) {
BbsTable[BbsIndex + Index].BootPriority = BBS_UNPRIORITIZED_ENTRY;
if ((HddInfo[HddIndex].Status & HDD_MASTER_IDE) != 0) {
BbsTable[BbsIndex + Index].DeviceType = BBS_HARDDISK;
} else if ((HddInfo[HddIndex].Status & HDD_MASTER_ATAPI_CDROM) != 0) {
BbsTable[BbsIndex + Index].DeviceType = BBS_CDROM;
} else {
//
// for ZIPDISK
//
BbsTable[BbsIndex + Index].DeviceType = BBS_HARDDISK;
}
} else {
BbsTable[BbsIndex + Index].BootPriority = BBS_IGNORE_ENTRY;
}
} else {
if ((HddInfo[HddIndex].Status & (HDD_SLAVE_IDE | HDD_SLAVE_ATAPI_CDROM | HDD_SLAVE_ATAPI_ZIPDISK)) != 0) {
BbsTable[BbsIndex + Index].BootPriority = BBS_UNPRIORITIZED_ENTRY;
if ((HddInfo[HddIndex].Status & HDD_SLAVE_IDE) != 0) {
BbsTable[BbsIndex + Index].DeviceType = BBS_HARDDISK;
} else if ((HddInfo[HddIndex].Status & HDD_SLAVE_ATAPI_CDROM) != 0) {
BbsTable[BbsIndex + Index].DeviceType = BBS_CDROM;
} else {
//
// for ZIPDISK
//
BbsTable[BbsIndex + Index].DeviceType = BBS_HARDDISK;
}
} else {
BbsTable[BbsIndex + Index].BootPriority = BBS_IGNORE_ENTRY;
}
}
}
}
}
return EFI_SUCCESS;
}
