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audk/MdeModulePkg/Universal/BdsDxe/BootMaint/BBSsupport.c

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/** @file
This function deal with the legacy boot option, it create, delete
and manage the legacy boot option, all legacy boot option is getting from
the legacy BBS table.
Copyright (c) 2004 - 2008, Intel Corporation. <BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "BBSsupport.h"
/**
Translate the first n characters of an Ascii string to
Unicode characters. The count n is indicated by parameter
Size. If Size is greater than the length of string, then
the entire string is translated.
@param AStr Pointer to input Ascii string.
@param Size The number of characters to translate.
@param UStr Pointer to output Unicode string buffer.
@return None
**/
VOID
AsciiToUnicodeSize (
IN UINT8 *AStr,
IN UINTN Size,
OUT UINT16 *UStr
)
{
UINTN Idx;
Idx = 0;
while (AStr[Idx] != 0) {
UStr[Idx] = (CHAR16) AStr[Idx];
if (Idx == Size) {
break;
}
Idx++;
}
UStr[Idx] = 0;
}
/**
change a Unicode string t ASCII string
@param UStr Unicode string
Lenght - most possible length of AStr
@param Length The length of UStr.
@param AStr ASCII string to pass out
@return Actual length
**/
UINTN
UnicodeToAscii (
IN CHAR16 *UStr,
IN UINTN Length,
OUT CHAR8 *AStr
)
{
UINTN Index;
//
// just buffer copy, not character copy
//
for (Index = 0; Index < Length; Index++) {
*AStr++ = (CHAR8) *UStr++;
}
return Index;
}
/**
Build Legacy Device Name String according.
@param CurBBSEntry BBS Table.
@param Index Index.
@param BufSize The buffer size.
@param BootString The output string.
@return VOID No output.
**/
VOID
BdsBuildLegacyDevNameString (
IN BBS_TABLE *CurBBSEntry,
IN UINTN Index,
IN UINTN BufSize,
OUT CHAR16 *BootString
)
{
CHAR16 *Fmt;
CHAR16 *Type;
UINT8 *StringDesc;
CHAR16 Temp[80];
switch (Index) {
//
// Primary Master
//
case 1:
Fmt = L"Primary Master %s";
break;
//
// Primary Slave
//
case 2:
Fmt = L"Primary Slave %s";
break;
//
// Secondary Master
//
case 3:
Fmt = L"Secondary Master %s";
break;
//
// Secondary Slave
//
case 4:
Fmt = L"Secondary Slave %s";
break;
default:
Fmt = L"%s";
break;
}
switch (CurBBSEntry->DeviceType) {
case BBS_FLOPPY:
Type = L"Floppy";
break;
case BBS_HARDDISK:
Type = L"Harddisk";
break;
case BBS_CDROM:
Type = L"CDROM";
break;
case BBS_PCMCIA:
Type = L"PCMCIAe";
break;
case BBS_USB:
Type = L"USB";
break;
case BBS_EMBED_NETWORK:
Type = L"Network";
break;
case BBS_BEV_DEVICE:
Type = L"BEVe";
break;
case BBS_UNKNOWN:
default:
Type = L"Unknown";
break;
}
//
// If current BBS entry has its description then use it.
//
StringDesc = (UINT8 *) (UINTN) ((CurBBSEntry->DescStringSegment << 4) + CurBBSEntry->DescStringOffset);
if (NULL != StringDesc) {
//
// Only get fisrt 32 characters, this is suggested by BBS spec
//
AsciiToUnicodeSize (StringDesc, 32, Temp);
Fmt = L"%s";
Type = Temp;
}
//
// BbsTable 16 entries are for onboard IDE.
// Set description string for SATA harddisks, Harddisk 0 ~ Harddisk 11
//
if (Index >= 5 && Index <= 16 && CurBBSEntry->DeviceType == BBS_HARDDISK) {
Fmt = L"%s %d";
UnicodeSPrint (BootString, BufSize, Fmt, Type, Index - 5);
} else {
UnicodeSPrint (BootString, BufSize, Fmt, Type);
}
}
/**
Create a legacy boot option for the specified entry of
BBS table, save it as variable, and append it to the boot
order list.
@param CurrentBbsEntry Pointer to current BBS table.
@param CurrentBbsDevPath Pointer to the Device Path Protocol instance of BBS
@param Index Index of the specified entry in BBS table.
@param BootOrderList On input, the original boot order list.
On output, the new boot order list attached with the
created node.
@param BootOrderListSize On input, the original size of boot order list.
- On output, the size of new boot order list.
@retval EFI_SUCCESS Boot Option successfully created.
@retval EFI_OUT_OF_RESOURCES Fail to allocate necessary memory.
@retval Other Error occurs while setting variable.
**/
EFI_STATUS
BdsCreateLegacyBootOption (
IN BBS_TABLE *CurrentBbsEntry,
IN EFI_DEVICE_PATH_PROTOCOL *CurrentBbsDevPath,
IN UINTN Index,
IN OUT UINT16 **BootOrderList,
IN OUT UINTN *BootOrderListSize
)
{
EFI_STATUS Status;
UINT16 CurrentBootOptionNo;
UINT16 BootString[10];
UINT16 BootDesc[100];
CHAR8 HelpString[100];
UINT16 *NewBootOrderList;
UINTN BufferSize;
UINTN StringLen;
VOID *Buffer;
UINT8 *Ptr;
UINT16 CurrentBbsDevPathSize;
UINTN BootOrderIndex;
UINTN BootOrderLastIndex;
UINTN ArrayIndex;
BOOLEAN IndexNotFound;
BBS_BBS_DEVICE_PATH *NewBbsDevPathNode;
if (NULL == (*BootOrderList)) {
CurrentBootOptionNo = 0;
} else {
for (ArrayIndex = 0; ArrayIndex < (UINTN) (*BootOrderListSize / sizeof (UINT16)); ArrayIndex++) {
IndexNotFound = TRUE;
for (BootOrderIndex = 0; BootOrderIndex < (UINTN) (*BootOrderListSize / sizeof (UINT16)); BootOrderIndex++) {
if ((*BootOrderList)[BootOrderIndex] == ArrayIndex) {
IndexNotFound = FALSE;
break;
}
}
if (!IndexNotFound) {
continue;
} else {
break;
}
}
CurrentBootOptionNo = (UINT16) ArrayIndex;
}
UnicodeSPrint (
BootString,
sizeof (BootString),
L"Boot%04x",
CurrentBootOptionNo
);
BdsBuildLegacyDevNameString (CurrentBbsEntry, Index, sizeof (BootDesc), BootDesc);
//
// Create new BBS device path node with description string
//
UnicodeToAscii (BootDesc, StrSize (BootDesc), HelpString);
StringLen = AsciiStrLen (HelpString);
NewBbsDevPathNode = AllocateZeroPool (sizeof (BBS_BBS_DEVICE_PATH) + StringLen);
if (NewBbsDevPathNode == NULL) {
return EFI_OUT_OF_RESOURCES;
}
CopyMem (NewBbsDevPathNode, CurrentBbsDevPath, sizeof (BBS_BBS_DEVICE_PATH));
CopyMem (NewBbsDevPathNode->String, HelpString, StringLen + 1);
SetDevicePathNodeLength (&(NewBbsDevPathNode->Header), sizeof (BBS_BBS_DEVICE_PATH) + StringLen);
//
// Create entire new CurrentBbsDevPath with end node
//
CurrentBbsDevPath = AppendDevicePathNode (
EndDevicePath,
(EFI_DEVICE_PATH_PROTOCOL *) NewBbsDevPathNode
);
if (CurrentBbsDevPath == NULL) {
FreePool (NewBbsDevPathNode);
return EFI_OUT_OF_RESOURCES;
}
CurrentBbsDevPathSize = (UINT16) (GetDevicePathSize (CurrentBbsDevPath));
BufferSize = sizeof (UINT32) +
sizeof (UINT16) +
StrSize (BootDesc) +
CurrentBbsDevPathSize +
sizeof (BBS_TABLE) +
sizeof (UINT16);
Buffer = AllocateZeroPool (BufferSize);
if (Buffer == NULL) {
FreePool (NewBbsDevPathNode);
FreePool (CurrentBbsDevPath);
return EFI_OUT_OF_RESOURCES;
}
Ptr = (UINT8 *) Buffer;
*((UINT32 *) Ptr) = LOAD_OPTION_ACTIVE;
Ptr += sizeof (UINT32);
*((UINT16 *) Ptr) = CurrentBbsDevPathSize;
Ptr += sizeof (UINT16);
CopyMem (
Ptr,
BootDesc,
StrSize (BootDesc)
);
Ptr += StrSize (BootDesc);
CopyMem (
Ptr,
CurrentBbsDevPath,
CurrentBbsDevPathSize
);
Ptr += CurrentBbsDevPathSize;
CopyMem (
Ptr,
CurrentBbsEntry,
sizeof (BBS_TABLE)
);
Ptr += sizeof (BBS_TABLE);
*((UINT16 *) Ptr) = (UINT16) Index;
Status = gRT->SetVariable (
BootString,
&gEfiGlobalVariableGuid,
VAR_FLAG,
BufferSize,
Buffer
);
SafeFreePool (Buffer);
Buffer = NULL;
NewBootOrderList = AllocateZeroPool (*BootOrderListSize + sizeof (UINT16));
if (NULL == NewBootOrderList) {
FreePool (NewBbsDevPathNode);
FreePool (CurrentBbsDevPath);
return EFI_OUT_OF_RESOURCES;
}
if (NULL != *BootOrderList) {
CopyMem (NewBootOrderList, *BootOrderList, *BootOrderListSize);
}
SafeFreePool (*BootOrderList);
BootOrderLastIndex = (UINTN) (*BootOrderListSize / sizeof (UINT16));
NewBootOrderList[BootOrderLastIndex] = CurrentBootOptionNo;
*BootOrderListSize += sizeof (UINT16);
*BootOrderList = NewBootOrderList;
FreePool (NewBbsDevPathNode);
FreePool (CurrentBbsDevPath);
return Status;
}
/**
Check if the boot option is a legacy one.
@param BootOptionVar The boot option data payload.
@param BbsEntry The BBS Table.
@param BbsIndex The table index.
@retval TRUE It is a legacy boot option.
@retval FALSE It is not a legacy boot option.
**/
BOOLEAN
BdsIsLegacyBootOption (
IN UINT8 *BootOptionVar,
OUT BBS_TABLE **BbsEntry,
OUT UINT16 *BbsIndex
)
{
UINT8 *Ptr;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
BOOLEAN Ret;
UINT16 DevPathLen;
Ptr = BootOptionVar;
Ptr += sizeof (UINT32);
DevPathLen = *(UINT16 *) Ptr;
Ptr += sizeof (UINT16);
Ptr += StrSize ((UINT16 *) Ptr);
DevicePath = (EFI_DEVICE_PATH_PROTOCOL *) Ptr;
if ((BBS_DEVICE_PATH == DevicePath->Type) && (BBS_BBS_DP == DevicePath->SubType)) {
Ptr += DevPathLen;
*BbsEntry = (BBS_TABLE *) Ptr;
Ptr += sizeof (BBS_TABLE);
*BbsIndex = *(UINT16 *) Ptr;
Ret = TRUE;
} else {
*BbsEntry = NULL;
Ret = FALSE;
}
return Ret;
}
/**
Delete all the invalid legacy boot options.
@retval EFI_SUCCESS All invalide legacy boot options are deleted.
@retval EFI_OUT_OF_RESOURCES Fail to allocate necessary memory.
@retval EFI_NOT_FOUND Fail to retrive variable of boot order.
**/
EFI_STATUS
BdsDeleteAllInvalidLegacyBootOptions (
VOID
)
{
UINT16 *BootOrder;
UINT8 *BootOptionVar;
UINTN BootOrderSize;
UINTN BootOptionSize;
EFI_STATUS Status;
UINT16 HddCount;
UINT16 BbsCount;
HDD_INFO *LocalHddInfo;
BBS_TABLE *LocalBbsTable;
BBS_TABLE *BbsEntry;
UINT16 BbsIndex;
EFI_LEGACY_BIOS_PROTOCOL *LegacyBios;
UINTN Index;
UINT16 BootOption[10];
UINT16 BootDesc[100];
BOOLEAN DescStringMatch;
Status = EFI_SUCCESS;
BootOrder = NULL;
BootOrderSize = 0;
HddCount = 0;
BbsCount = 0;
LocalHddInfo = NULL;
LocalBbsTable = NULL;
BbsEntry = NULL;
Status = EfiLibLocateProtocol (&gEfiLegacyBiosProtocolGuid, (VOID **) &LegacyBios);
if (EFI_ERROR (Status)) {
return Status;
}
LegacyBios->GetBbsInfo (
LegacyBios,
&HddCount,
&LocalHddInfo,
&BbsCount,
&LocalBbsTable
);
BootOrder = BdsLibGetVariableAndSize (
L"BootOrder",
&gEfiGlobalVariableGuid,
&BootOrderSize
);
if (NULL == BootOrder) {
return EFI_NOT_FOUND;
}
Index = 0;
while (Index < BootOrderSize / sizeof (UINT16)) {
UnicodeSPrint (BootOption, sizeof (BootOption), L"Boot%04x", BootOrder[Index]);
BootOptionVar = BdsLibGetVariableAndSize (
BootOption,
&gEfiGlobalVariableGuid,
&BootOptionSize
);
if (NULL == BootOptionVar) {
SafeFreePool (BootOrder);
return EFI_OUT_OF_RESOURCES;
}
if (!BdsIsLegacyBootOption (BootOptionVar, &BbsEntry, &BbsIndex)) {
SafeFreePool (BootOptionVar);
Index++;
continue;
}
//
// Check if BBS Description String is changed
//
DescStringMatch = FALSE;
BdsBuildLegacyDevNameString (
&LocalBbsTable[BbsIndex],
BbsIndex,
sizeof(BootDesc),
BootDesc
);
if (StrCmp (BootDesc, (UINT16*)(BootOptionVar + sizeof (UINT32) + sizeof (UINT16))) == 0) {
DescStringMatch = TRUE;
}
if (!((LocalBbsTable[BbsIndex].BootPriority == BBS_IGNORE_ENTRY) ||
(LocalBbsTable[BbsIndex].BootPriority == BBS_DO_NOT_BOOT_FROM)) &&
(LocalBbsTable[BbsIndex].DeviceType == BbsEntry->DeviceType) &&
DescStringMatch) {
Index++;
continue;
}
SafeFreePool (BootOptionVar);
//
// should delete
//
BdsDeleteBootOption (
BootOrder[Index],
BootOrder,
&BootOrderSize
);
}
if (BootOrderSize != 0) {
Status = gRT->SetVariable (
L"BootOrder",
&gEfiGlobalVariableGuid,
VAR_FLAG,
BootOrderSize,
BootOrder
);
} else {
EfiLibDeleteVariable (L"BootOrder", &gEfiGlobalVariableGuid);
}
SafeFreePool (BootOrder);
return Status;
}
/**
Find all legacy boot option by device type.
@param BootOrder The boot order array.
@param BootOptionNum The number of boot option.
@param DevType Device type.
@param Attribute The boot option attribute.
@param BbsIndex The BBS table index.
@param OptionNumber The boot option index.
@retval TRUE The Legacy boot option is found.
@retval FALSE The legacy boot option is not found.
**/
BOOLEAN
BdsFindLegacyBootOptionByDevType (
IN UINT16 *BootOrder,
IN UINTN BootOptionNum,
IN UINT16 DevType,
OUT UINT32 *Attribute,
OUT UINT16 *BbsIndex,
OUT UINTN *OptionNumber
)
{
UINTN Index;
UINTN BootOrderIndex;
UINT16 BootOption[100];
UINTN BootOptionSize;
UINT8 *BootOptionVar;
BBS_TABLE *BbsEntry;
BOOLEAN Found;
BbsEntry = NULL;
Found = FALSE;
if (NULL == BootOrder) {
return Found;
}
for (BootOrderIndex = 0; BootOrderIndex < BootOptionNum; BootOrderIndex++) {
Index = (UINTN) BootOrder[BootOrderIndex];
UnicodeSPrint (BootOption, sizeof (BootOption), L"Boot%04x", Index);
BootOptionVar = BdsLibGetVariableAndSize (
BootOption,
&gEfiGlobalVariableGuid,
&BootOptionSize
);
if (NULL == BootOptionVar) {
continue;
}
if (!BdsIsLegacyBootOption (BootOptionVar, &BbsEntry, BbsIndex)) {
SafeFreePool (BootOptionVar);
continue;
}
if (BbsEntry->DeviceType != DevType) {
SafeFreePool (BootOptionVar);
continue;
}
*Attribute = *(UINT32 *) BootOptionVar;
*OptionNumber = Index;
Found = TRUE;
SafeFreePool (BootOptionVar);
break;
}
return Found;
}
/**
Create a legacy boot option.
@param BbsItem The BBS Table entry.
@param Index Index of the specified entry in BBS table.
@param BootOrderList The boot order list.
@param BootOrderListSize The size of boot order list.
@retval EFI_OUT_OF_RESOURCE No enough memory.
@retval EFI_SUCCESS The function complete successfully.
@return Other value if the legacy boot option is not created.
**/
EFI_STATUS
BdsCreateOneLegacyBootOption (
IN BBS_TABLE *BbsItem,
IN UINTN Index,
IN OUT UINT16 **BootOrderList,
IN OUT UINTN *BootOrderListSize
)
{
BBS_BBS_DEVICE_PATH BbsDevPathNode;
EFI_STATUS Status;
EFI_DEVICE_PATH_PROTOCOL *DevPath;
DevPath = NULL;
BbsDevPathNode.Header.Type = BBS_DEVICE_PATH;
BbsDevPathNode.Header.SubType = BBS_BBS_DP;
SetDevicePathNodeLength (&BbsDevPathNode.Header, sizeof (BBS_BBS_DEVICE_PATH));
BbsDevPathNode.DeviceType = BbsItem->DeviceType;
CopyMem (&BbsDevPathNode.StatusFlag, &BbsItem->StatusFlags, sizeof (UINT16));
DevPath = AppendDevicePathNode (
EndDevicePath,
(EFI_DEVICE_PATH_PROTOCOL *) &BbsDevPathNode
);
if (NULL == DevPath) {
return EFI_OUT_OF_RESOURCES;
}
Status = BdsCreateLegacyBootOption (
BbsItem,
DevPath,
Index,
BootOrderList,
BootOrderListSize
);
BbsItem->BootPriority = 0x00;
FreePool (DevPath);
return Status;
}
/**
Add the legacy boot options from BBS table if they do not exist.
@retval EFI_SUCCESS The boot options are added successfully
or they are already in boot options.
**/
EFI_STATUS
BdsAddNonExistingLegacyBootOptions (
VOID
)
{
UINT16 *BootOrder;
UINTN BootOrderSize;
EFI_STATUS Status;
UINT16 HddCount;
UINT16 BbsCount;
HDD_INFO *LocalHddInfo;
BBS_TABLE *LocalBbsTable;
UINT16 BbsIndex;
EFI_LEGACY_BIOS_PROTOCOL *LegacyBios;
UINTN Index;
UINT32 Attribute;
UINTN OptionNumber;
BOOLEAN Ret;
BootOrder = NULL;
HddCount = 0;
BbsCount = 0;
LocalHddInfo = NULL;
LocalBbsTable = NULL;
Status = EfiLibLocateProtocol (&gEfiLegacyBiosProtocolGuid, (VOID **) &LegacyBios);
if (EFI_ERROR (Status)) {
return Status;
}
LegacyBios->GetBbsInfo (
LegacyBios,
&HddCount,
&LocalHddInfo,
&BbsCount,
&LocalBbsTable
);
BootOrder = BdsLibGetVariableAndSize (
L"BootOrder",
&gEfiGlobalVariableGuid,
&BootOrderSize
);
if (NULL == BootOrder) {
BootOrderSize = 0;
}
for (Index = 0; Index < BbsCount; Index++) {
if ((LocalBbsTable[Index].BootPriority == BBS_IGNORE_ENTRY) ||
(LocalBbsTable[Index].BootPriority == BBS_DO_NOT_BOOT_FROM)
) {
continue;
}
Ret = BdsFindLegacyBootOptionByDevType (
BootOrder,
BootOrderSize / sizeof (UINT16),
LocalBbsTable[Index].DeviceType,
&Attribute,
&BbsIndex,
&OptionNumber
);
if (Ret) {
continue;
}
//
// Not found such type of legacy device in boot options or we found but it's disabled
// so we have to create one and put it to the tail of boot order list
//
Status = BdsCreateOneLegacyBootOption (
&LocalBbsTable[Index],
Index,
&BootOrder,
&BootOrderSize
);
if (EFI_ERROR (Status)) {
break;
}
}
if (BootOrderSize > 0) {
Status = gRT->SetVariable (
L"BootOrder",
&gEfiGlobalVariableGuid,
VAR_FLAG,
BootOrderSize,
BootOrder
);
} else {
EfiLibDeleteVariable (L"BootOrder", &gEfiGlobalVariableGuid);
}
if (BootOrder != NULL) {
SafeFreePool (BootOrder);
}
return Status;
}
/**
Fill the device order buffer.
@param BbsTable The BBS table.
@param BbsType The BBS Type.
@param BbsCount The BBS Count.
@param Buf device order buffer.
@return The device order buffer.
**/
UINT16 *
BdsFillDevOrderBuf (
IN BBS_TABLE *BbsTable,
IN BBS_TYPE BbsType,
IN UINTN BbsCount,
OUT UINT16 *Buf
)
{
UINTN Index;
for (Index = 0; Index < BbsCount; Index++) {
if (BbsTable[Index].BootPriority == BBS_IGNORE_ENTRY) {
continue;
}
if (BbsTable[Index].DeviceType != BbsType) {
continue;
}
*Buf = (UINT16) (Index & 0xFF);
Buf++;
}
return Buf;
}
/**
Create the device order buffer.
@param BbsTable The BBS table.
@param BbsCount The BBS Count.
@retval EFI_SUCCES The buffer is created and the EFI variable named
VAR_LEGACY_DEV_ORDER and EfiLegacyDevOrderGuid is
set correctly.
@return Other value if the set of EFI variable fails. Check gRT->SetVariable
for detailed information.
**/
EFI_STATUS
BdsCreateDevOrder (
IN BBS_TABLE *BbsTable,
IN UINT16 BbsCount
)
{
UINTN Index;
UINTN FDCount;
UINTN HDCount;
UINTN CDCount;
UINTN NETCount;
UINTN BEVCount;
UINTN TotalSize;
UINTN HeaderSize;
UINT8 *DevOrder;
UINT8 *Ptr;
EFI_STATUS Status;
FDCount = 0;
HDCount = 0;
CDCount = 0;
NETCount = 0;
BEVCount = 0;
TotalSize = 0;
HeaderSize = sizeof (BBS_TYPE) + sizeof (UINT16);
DevOrder = NULL;
Ptr = NULL;
Status = EFI_SUCCESS;
for (Index = 0; Index < BbsCount; Index++) {
if (BbsTable[Index].BootPriority == BBS_IGNORE_ENTRY) {
continue;
}
switch (BbsTable[Index].DeviceType) {
case BBS_FLOPPY:
FDCount++;
break;
case BBS_HARDDISK:
HDCount++;
break;
case BBS_CDROM:
CDCount++;
break;
case BBS_EMBED_NETWORK:
NETCount++;
break;
case BBS_BEV_DEVICE:
BEVCount++;
break;
default:
break;
}
}
TotalSize += (HeaderSize + sizeof (UINT16) * FDCount);
TotalSize += (HeaderSize + sizeof (UINT16) * HDCount);
TotalSize += (HeaderSize + sizeof (UINT16) * CDCount);
TotalSize += (HeaderSize + sizeof (UINT16) * NETCount);
TotalSize += (HeaderSize + sizeof (UINT16) * BEVCount);
DevOrder = AllocateZeroPool (TotalSize);
if (NULL == DevOrder) {
return EFI_OUT_OF_RESOURCES;
}
Ptr = DevOrder;
*((BBS_TYPE *) Ptr) = BBS_FLOPPY;
Ptr += sizeof (BBS_TYPE);
*((UINT16 *) Ptr) = (UINT16) (sizeof (UINT16) + FDCount * sizeof (UINT16));
Ptr += sizeof (UINT16);
if (FDCount != 0) {
Ptr = (UINT8 *) BdsFillDevOrderBuf (BbsTable, BBS_FLOPPY, BbsCount, (UINT16 *) Ptr);
}
*((BBS_TYPE *) Ptr) = BBS_HARDDISK;
Ptr += sizeof (BBS_TYPE);
*((UINT16 *) Ptr) = (UINT16) (sizeof (UINT16) + HDCount * sizeof (UINT16));
Ptr += sizeof (UINT16);
if (HDCount != 0) {
Ptr = (UINT8 *) BdsFillDevOrderBuf (BbsTable, BBS_HARDDISK, BbsCount, (UINT16 *) Ptr);
}
*((BBS_TYPE *) Ptr) = BBS_CDROM;
Ptr += sizeof (BBS_TYPE);
*((UINT16 *) Ptr) = (UINT16) (sizeof (UINT16) + CDCount * sizeof (UINT16));
Ptr += sizeof (UINT16);
if (CDCount != 0) {
Ptr = (UINT8 *) BdsFillDevOrderBuf (BbsTable, BBS_CDROM, BbsCount, (UINT16 *) Ptr);
}
*((BBS_TYPE *) Ptr) = BBS_EMBED_NETWORK;
Ptr += sizeof (BBS_TYPE);
*((UINT16 *) Ptr) = (UINT16) (sizeof (UINT16) + NETCount * sizeof (UINT16));
Ptr += sizeof (UINT16);
if (NETCount != 0) {
Ptr = (UINT8 *) BdsFillDevOrderBuf (BbsTable, BBS_EMBED_NETWORK, BbsCount, (UINT16 *) Ptr);
}
*((BBS_TYPE *) Ptr) = BBS_BEV_DEVICE;
Ptr += sizeof (BBS_TYPE);
*((UINT16 *) Ptr) = (UINT16) (sizeof (UINT16) + BEVCount * sizeof (UINT16));
Ptr += sizeof (UINT16);
if (BEVCount != 0) {
Ptr = (UINT8 *) BdsFillDevOrderBuf (BbsTable, BBS_BEV_DEVICE, BbsCount, (UINT16 *) Ptr);
}
Status = gRT->SetVariable (
VAR_LEGACY_DEV_ORDER,
&EfiLegacyDevOrderGuid,
VAR_FLAG,
TotalSize,
DevOrder
);
SafeFreePool (DevOrder);
return Status;
}
/**
Add the legacy boot devices from BBS table into
the legacy device boot order.
@retval EFI_SUCCESS The boot devices are added successfully.
**/
EFI_STATUS
BdsUpdateLegacyDevOrder (
VOID
)
{
UINT8 *DevOrder;
UINT8 *NewDevOrder;
UINTN DevOrderSize;
EFI_LEGACY_BIOS_PROTOCOL *LegacyBios;
EFI_STATUS Status;
UINT16 HddCount;
UINT16 BbsCount;
HDD_INFO *LocalHddInfo;
BBS_TABLE *LocalBbsTable;
UINTN Index;
UINTN Index2;
UINTN *Idx;
UINTN FDCount;
UINTN HDCount;
UINTN CDCount;
UINTN NETCount;
UINTN BEVCount;
UINTN TotalSize;
UINTN HeaderSize;
UINT8 *Ptr;
UINT8 *NewPtr;
UINT16 *NewFDPtr;
UINT16 *NewHDPtr;
UINT16 *NewCDPtr;
UINT16 *NewNETPtr;
UINT16 *NewBEVPtr;
UINT16 *NewDevPtr;
UINT16 Length;
UINT16 Tmp;
UINTN FDIndex;
UINTN HDIndex;
UINTN CDIndex;
UINTN NETIndex;
UINTN BEVIndex;
LocalHddInfo = NULL;
LocalBbsTable = NULL;
Idx = NULL;
FDCount = 0;
HDCount = 0;
CDCount = 0;
NETCount = 0;
BEVCount = 0;
TotalSize = 0;
HeaderSize = sizeof (BBS_TYPE) + sizeof (UINT16);
FDIndex = 0;
HDIndex = 0;
CDIndex = 0;
NETIndex = 0;
BEVIndex = 0;
NewDevPtr = NULL;
Status = EfiLibLocateProtocol (&gEfiLegacyBiosProtocolGuid, (VOID **) &LegacyBios);
if (EFI_ERROR (Status)) {
return Status;
}
LegacyBios->GetBbsInfo (
LegacyBios,
&HddCount,
&LocalHddInfo,
&BbsCount,
&LocalBbsTable
);
DevOrder = (UINT8 *) BdsLibGetVariableAndSize (
VAR_LEGACY_DEV_ORDER,
&EfiLegacyDevOrderGuid,
&DevOrderSize
);
if (NULL == DevOrder) {
return BdsCreateDevOrder (LocalBbsTable, BbsCount);
}
//
// First we figure out how many boot devices with same device type respectively
//
for (Index = 0; Index < BbsCount; Index++) {
if ((LocalBbsTable[Index].BootPriority == BBS_IGNORE_ENTRY) ||
(LocalBbsTable[Index].BootPriority == BBS_DO_NOT_BOOT_FROM)
) {
continue;
}
switch (LocalBbsTable[Index].DeviceType) {
case BBS_FLOPPY:
FDCount++;
break;
case BBS_HARDDISK:
HDCount++;
break;
case BBS_CDROM:
CDCount++;
break;
case BBS_EMBED_NETWORK:
NETCount++;
break;
case BBS_BEV_DEVICE:
BEVCount++;
break;
default:
break;
}
}
TotalSize += (HeaderSize + FDCount * sizeof (UINT16));
TotalSize += (HeaderSize + HDCount * sizeof (UINT16));
TotalSize += (HeaderSize + CDCount * sizeof (UINT16));
TotalSize += (HeaderSize + NETCount * sizeof (UINT16));
TotalSize += (HeaderSize + BEVCount * sizeof (UINT16));
NewDevOrder = AllocateZeroPool (TotalSize);
if (NULL == NewDevOrder) {
return EFI_OUT_OF_RESOURCES;
}
NewFDPtr = (UINT16 *) (NewDevOrder + HeaderSize);
NewHDPtr = (UINT16 *) ((UINT8 *) NewFDPtr + FDCount * sizeof (UINT16) + HeaderSize);
NewCDPtr = (UINT16 *) ((UINT8 *) NewHDPtr + HDCount * sizeof (UINT16) + HeaderSize);
NewNETPtr = (UINT16 *) ((UINT8 *) NewCDPtr + CDCount * sizeof (UINT16) + HeaderSize);
NewBEVPtr = (UINT16 *) ((UINT8 *) NewNETPtr + NETCount * sizeof (UINT16) + HeaderSize);
//
// copy FD
//
Ptr = DevOrder;
NewPtr = NewDevOrder;
*((BBS_TYPE *) NewPtr) = *((BBS_TYPE *) Ptr);
Ptr += sizeof (BBS_TYPE);
NewPtr += sizeof (BBS_TYPE);
Length = *((UINT16 *) Ptr);
*((UINT16 *) NewPtr) = (UINT16) (sizeof (UINT16) + FDCount * sizeof (UINT16));
Ptr += sizeof (UINT16);
for (Index = 0; Index < Length / sizeof (UINT16) - 1; Index++) {
if (LocalBbsTable[*Ptr].BootPriority == BBS_IGNORE_ENTRY ||
LocalBbsTable[*Ptr].BootPriority == BBS_DO_NOT_BOOT_FROM ||
LocalBbsTable[*Ptr].DeviceType != BBS_FLOPPY
) {
Ptr += sizeof (UINT16);
continue;
}
NewFDPtr[FDIndex] = *(UINT16 *) Ptr;
FDIndex++;
Ptr += sizeof (UINT16);
}
//
// copy HD
//
NewPtr = (UINT8 *) NewHDPtr - HeaderSize;
*((BBS_TYPE *) NewPtr) = *((BBS_TYPE *) Ptr);
Ptr += sizeof (BBS_TYPE);
NewPtr += sizeof (BBS_TYPE);
Length = *((UINT16 *) Ptr);
*((UINT16 *) NewPtr) = (UINT16) (sizeof (UINT16) + HDCount * sizeof (UINT16));
Ptr += sizeof (UINT16);
for (Index = 0; Index < Length / sizeof (UINT16) - 1; Index++) {
if (LocalBbsTable[*Ptr].BootPriority == BBS_IGNORE_ENTRY ||
LocalBbsTable[*Ptr].BootPriority == BBS_DO_NOT_BOOT_FROM ||
LocalBbsTable[*Ptr].BootPriority == BBS_LOWEST_PRIORITY ||
LocalBbsTable[*Ptr].DeviceType != BBS_HARDDISK
) {
Ptr += sizeof (UINT16);
continue;
}
NewHDPtr[HDIndex] = *(UINT16 *) Ptr;
HDIndex++;
Ptr += sizeof (UINT16);
}
//
// copy CD
//
NewPtr = (UINT8 *) NewCDPtr - HeaderSize;
*((BBS_TYPE *) NewPtr) = *((BBS_TYPE *) Ptr);
Ptr += sizeof (BBS_TYPE);
NewPtr += sizeof (BBS_TYPE);
Length = *((UINT16 *) Ptr);
*((UINT16 *) NewPtr) = (UINT16) (sizeof (UINT16) + CDCount * sizeof (UINT16));
Ptr += sizeof (UINT16);
for (Index = 0; Index < Length / sizeof (UINT16) - 1; Index++) {
if (LocalBbsTable[*Ptr].BootPriority == BBS_IGNORE_ENTRY ||
LocalBbsTable[*Ptr].BootPriority == BBS_DO_NOT_BOOT_FROM ||
LocalBbsTable[*Ptr].BootPriority == BBS_LOWEST_PRIORITY ||
LocalBbsTable[*Ptr].DeviceType != BBS_CDROM
) {
Ptr += sizeof (UINT16);
continue;
}
NewCDPtr[CDIndex] = *(UINT16 *) Ptr;
CDIndex++;
Ptr += sizeof (UINT16);
}
//
// copy NET
//
NewPtr = (UINT8 *) NewNETPtr - HeaderSize;
*((BBS_TYPE *) NewPtr) = *((BBS_TYPE *) Ptr);
Ptr += sizeof (BBS_TYPE);
NewPtr += sizeof (BBS_TYPE);
Length = *((UINT16 *) Ptr);
*((UINT16 *) NewPtr) = (UINT16) (sizeof (UINT16) + NETCount * sizeof (UINT16));
Ptr += sizeof (UINT16);
for (Index = 0; Index < Length / sizeof (UINT16) - 1; Index++) {
if (LocalBbsTable[*Ptr].BootPriority == BBS_IGNORE_ENTRY ||
LocalBbsTable[*Ptr].BootPriority == BBS_DO_NOT_BOOT_FROM ||
LocalBbsTable[*Ptr].BootPriority == BBS_LOWEST_PRIORITY ||
LocalBbsTable[*Ptr].DeviceType != BBS_EMBED_NETWORK
) {
Ptr += sizeof (UINT16);
continue;
}
NewNETPtr[NETIndex] = *(UINT16 *) Ptr;
NETIndex++;
Ptr += sizeof (UINT16);
}
//
// copy BEV
//
NewPtr = (UINT8 *) NewBEVPtr - HeaderSize;
*((BBS_TYPE *) NewPtr) = *((BBS_TYPE *) Ptr);
Ptr += sizeof (BBS_TYPE);
NewPtr += sizeof (BBS_TYPE);
Length = *((UINT16 *) Ptr);
*((UINT16 *) NewPtr) = (UINT16) (sizeof (UINT16) + BEVCount * sizeof (UINT16));
Ptr += sizeof (UINT16);
for (Index = 0; Index < Length / sizeof (UINT16) - 1; Index++) {
if (LocalBbsTable[*Ptr].BootPriority == BBS_IGNORE_ENTRY ||
LocalBbsTable[*Ptr].BootPriority == BBS_DO_NOT_BOOT_FROM ||
LocalBbsTable[*Ptr].BootPriority == BBS_LOWEST_PRIORITY ||
LocalBbsTable[*Ptr].DeviceType != BBS_BEV_DEVICE
) {
Ptr += sizeof (UINT16);
continue;
}
NewBEVPtr[BEVIndex] = *(UINT16 *) Ptr;
BEVIndex++;
Ptr += sizeof (UINT16);
}
for (Index = 0; Index < BbsCount; Index++) {
if ((LocalBbsTable[Index].BootPriority == BBS_IGNORE_ENTRY) ||
(LocalBbsTable[Index].BootPriority == BBS_DO_NOT_BOOT_FROM)
) {
continue;
}
switch (LocalBbsTable[Index].DeviceType) {
case BBS_FLOPPY:
Idx = &FDIndex;
NewDevPtr = NewFDPtr;
break;
case BBS_HARDDISK:
Idx = &HDIndex;
NewDevPtr = NewHDPtr;
break;
case BBS_CDROM:
Idx = &CDIndex;
NewDevPtr = NewCDPtr;
break;
case BBS_EMBED_NETWORK:
Idx = &NETIndex;
NewDevPtr = NewNETPtr;
break;
case BBS_BEV_DEVICE:
Idx = &BEVIndex;
NewDevPtr = NewBEVPtr;
break;
default:
Idx = NULL;
break;
}
//
// at this point we have copied those valid indexes to new buffer
// and we should check if there is any new appeared boot device
//
if (Idx != 0) {
for (Index2 = 0; Index2 < *Idx; Index2++) {
if ((NewDevPtr[Index2] & 0xFF) == (UINT16) Index) {
break;
}
}
if (Index2 == *Idx) {
//
// Index2 == *Idx means we didn't find Index
// so Index is a new appeared device's index in BBS table
// save it.
//
NewDevPtr[*Idx] = (UINT16) (Index & 0xFF);
(*Idx)++;
}
}
}
if (FDCount != 0) {
//
// Just to make sure that disabled indexes are all at the end of the array
//
for (Index = 0; Index < FDIndex - 1; Index++) {
if (0xFF00 != (NewFDPtr[Index] & 0xFF00)) {
continue;
}
for (Index2 = Index + 1; Index2 < FDIndex; Index2++) {
if (0 == (NewFDPtr[Index2] & 0xFF00)) {
Tmp = NewFDPtr[Index];
NewFDPtr[Index] = NewFDPtr[Index2];
NewFDPtr[Index2] = Tmp;
break;
}
}
}
}
if (HDCount != 0) {
//
// Just to make sure that disabled indexes are all at the end of the array
//
for (Index = 0; Index < HDIndex - 1; Index++) {
if (0xFF00 != (NewHDPtr[Index] & 0xFF00)) {
continue;
}
for (Index2 = Index + 1; Index2 < HDIndex; Index2++) {
if (0 == (NewHDPtr[Index2] & 0xFF00)) {
Tmp = NewHDPtr[Index];
NewHDPtr[Index] = NewHDPtr[Index2];
NewHDPtr[Index2] = Tmp;
break;
}
}
}
}
if (CDCount != 0) {
//
// Just to make sure that disabled indexes are all at the end of the array
//
for (Index = 0; Index < CDIndex - 1; Index++) {
if (0xFF00 != (NewCDPtr[Index] & 0xFF00)) {
continue;
}
for (Index2 = Index + 1; Index2 < CDIndex; Index2++) {
if (0 == (NewCDPtr[Index2] & 0xFF00)) {
Tmp = NewCDPtr[Index];
NewCDPtr[Index] = NewCDPtr[Index2];
NewCDPtr[Index2] = Tmp;
break;
}
}
}
}
if (NETCount != 0) {
//
// Just to make sure that disabled indexes are all at the end of the array
//
for (Index = 0; Index < NETIndex - 1; Index++) {
if (0xFF00 != (NewNETPtr[Index] & 0xFF00)) {
continue;
}
for (Index2 = Index + 1; Index2 < NETIndex; Index2++) {
if (0 == (NewNETPtr[Index2] & 0xFF00)) {
Tmp = NewNETPtr[Index];
NewNETPtr[Index] = NewNETPtr[Index2];
NewNETPtr[Index2] = Tmp;
break;
}
}
}
}
if (BEVCount!= 0) {
//
// Just to make sure that disabled indexes are all at the end of the array
//
for (Index = 0; Index < BEVIndex - 1; Index++) {
if (0xFF00 != (NewBEVPtr[Index] & 0xFF00)) {
continue;
}
for (Index2 = Index + 1; Index2 < BEVIndex; Index2++) {
if (0 == (NewBEVPtr[Index2] & 0xFF00)) {
Tmp = NewBEVPtr[Index];
NewBEVPtr[Index] = NewBEVPtr[Index2];
NewBEVPtr[Index2] = Tmp;
break;
}
}
}
}
SafeFreePool (DevOrder);
Status = gRT->SetVariable (
VAR_LEGACY_DEV_ORDER,
&EfiLegacyDevOrderGuid,
VAR_FLAG,
TotalSize,
NewDevOrder
);
SafeFreePool (NewDevOrder);
return Status;
}
/**
Set Boot Priority for specified device type.
@param DeviceType The device type.
@param LocalBbsTable The BBS table.
@param Priority The prority table.
@retval EFI_SUCCESS The function completes successfully.
@retval EFI_NOT_FOUND Failed to find device.
**/
EFI_STATUS
BdsSetBootPriority4SameTypeDev (
IN UINT16 DeviceType,
IN OUT BBS_TABLE *LocalBbsTable,
IN OUT UINT16 *Priority
)
{
UINT8 *DevOrder;
UINT8 *OrigBuffer;
UINT16 *DevIndex;
UINTN DevOrderSize;
UINTN DevCount;
UINTN Index;
DevOrder = BdsLibGetVariableAndSize (
VAR_LEGACY_DEV_ORDER,
&EfiLegacyDevOrderGuid,
&DevOrderSize
);
if (NULL == DevOrder) {
return EFI_OUT_OF_RESOURCES;
}
OrigBuffer = DevOrder;
while (DevOrder < OrigBuffer + DevOrderSize) {
if (DeviceType == * (BBS_TYPE *) DevOrder) {
break;
}
DevOrder += sizeof (BBS_TYPE);
DevOrder += *(UINT16 *) DevOrder;
}
if (DevOrder >= OrigBuffer + DevOrderSize) {
SafeFreePool (OrigBuffer);
return EFI_NOT_FOUND;
}
DevOrder += sizeof (BBS_TYPE);
DevCount = (*((UINT16 *) DevOrder) - sizeof (UINT16)) / sizeof (UINT16);
DevIndex = (UINT16 *) (DevOrder + sizeof (UINT16));
//
// If the high byte of the DevIndex is 0xFF, it indicates that this device has been disabled.
//
for (Index = 0; Index < DevCount; Index++) {
if ((DevIndex[Index] & 0xFF00) == 0xFF00) {
//
// LocalBbsTable[DevIndex[Index] & 0xFF].BootPriority = BBS_DISABLED_ENTRY;
//
} else {
LocalBbsTable[DevIndex[Index] & 0xFF].BootPriority = *Priority;
(*Priority)++;
}
}
SafeFreePool (OrigBuffer);
return EFI_SUCCESS;
}
/**
Print the BBS Table.
@param LocalBbsTable The BBS table.
**/
VOID
PrintBbsTable (
IN BBS_TABLE *LocalBbsTable
)
{
UINT16 Idx;
DEBUG ((DEBUG_ERROR, "\n"));
DEBUG ((DEBUG_ERROR, " NO Prio bb/dd/ff cl/sc Type Stat segm:offs\n"));
DEBUG ((DEBUG_ERROR, "=============================================\n"));
for (Idx = 0; Idx < MAX_BBS_ENTRIES; Idx++) {
if ((LocalBbsTable[Idx].BootPriority == BBS_IGNORE_ENTRY) ||
(LocalBbsTable[Idx].BootPriority == BBS_DO_NOT_BOOT_FROM) ||
(LocalBbsTable[Idx].BootPriority == BBS_LOWEST_PRIORITY)
) {
continue;
}
DEBUG (
(DEBUG_ERROR,
" %02x: %04x %02x/%02x/%02x %02x/%02x %04x %04x %04x:%04x\n",
(UINTN) Idx,
(UINTN) LocalBbsTable[Idx].BootPriority,
(UINTN) LocalBbsTable[Idx].Bus,
(UINTN) LocalBbsTable[Idx].Device,
(UINTN) LocalBbsTable[Idx].Function,
(UINTN) LocalBbsTable[Idx].Class,
(UINTN) LocalBbsTable[Idx].SubClass,
(UINTN) LocalBbsTable[Idx].DeviceType,
(UINTN) * (UINT16 *) &LocalBbsTable[Idx].StatusFlags,
(UINTN) LocalBbsTable[Idx].BootHandlerSegment,
(UINTN) LocalBbsTable[Idx].BootHandlerOffset,
(UINTN) ((LocalBbsTable[Idx].MfgStringSegment << 4) + LocalBbsTable[Idx].MfgStringOffset),
(UINTN) ((LocalBbsTable[Idx].DescStringSegment << 4) + LocalBbsTable[Idx].DescStringOffset))
);
}
DEBUG ((DEBUG_ERROR, "\n"));
}
/**
Set the boot priority for BBS entries based on boot option entry and boot order.
@param Entry The boot option is to be checked for refresh BBS table.
@retval EFI_SUCCESS The boot priority for BBS entries is refreshed successfully.
**/
EFI_STATUS
BdsRefreshBbsTableForBoot (
IN BDS_COMMON_OPTION *Entry
)
{
EFI_STATUS Status;
UINT16 HddCount;
UINT16 BbsCount;
HDD_INFO *LocalHddInfo;
BBS_TABLE *LocalBbsTable;
UINT16 DevType;
EFI_LEGACY_BIOS_PROTOCOL *LegacyBios;
UINTN Index;
UINT16 Priority;
UINT16 *BootOrder;
UINTN BootOrderSize;
UINT8 *BootOptionVar;
UINTN BootOptionSize;
UINT16 BootOption[100];
UINT8 *Ptr;
UINT16 DevPathLen;
EFI_DEVICE_PATH_PROTOCOL *DevPath;
HddCount = 0;
BbsCount = 0;
LocalHddInfo = NULL;
LocalBbsTable = NULL;
DevType = BBS_UNKNOWN;
Status = EfiLibLocateProtocol (&gEfiLegacyBiosProtocolGuid, (VOID **) &LegacyBios);
if (EFI_ERROR (Status)) {
return Status;
}
LegacyBios->GetBbsInfo (
LegacyBios,
&HddCount,
&LocalHddInfo,
&BbsCount,
&LocalBbsTable
);
//
// First, set all the present devices' boot priority to BBS_UNPRIORITIZED_ENTRY
// We will set them according to the settings setup by user
//
for (Index = 0; Index < BbsCount; Index++) {
if (!((BBS_IGNORE_ENTRY == LocalBbsTable[Index].BootPriority) ||
(BBS_DO_NOT_BOOT_FROM == LocalBbsTable[Index].BootPriority) ||
(BBS_LOWEST_PRIORITY == LocalBbsTable[Index].BootPriority))) {
LocalBbsTable[Index].BootPriority = BBS_UNPRIORITIZED_ENTRY;
}
}
//
// boot priority always starts at 0
//
Priority = 0;
if (Entry->LoadOptionsSize == sizeof (BBS_TABLE) + sizeof (UINT16)) {
//
// If Entry stands for a legacy boot option, we prioritize the devices with the same type first.
//
DevType = ((BBS_TABLE *) Entry->LoadOptions)->DeviceType;
Status = BdsSetBootPriority4SameTypeDev (
DevType,
LocalBbsTable,
&Priority
);
if (EFI_ERROR (Status)) {
return Status;
}
}
//
// we have to set the boot priority for other BBS entries with different device types
//
BootOrder = (UINT16 *) BdsLibGetVariableAndSize (
L"BootOrder",
&gEfiGlobalVariableGuid,
&BootOrderSize
);
for (Index = 0; ((BootOrder != NULL) && (Index < BootOrderSize / sizeof (UINT16))); Index++) {
UnicodeSPrint (BootOption, sizeof (BootOption), L"Boot%04x", BootOrder[Index]);
BootOptionVar = BdsLibGetVariableAndSize (
BootOption,
&gEfiGlobalVariableGuid,
&BootOptionSize
);
if (NULL == BootOptionVar) {
continue;
}
Ptr = BootOptionVar;
Ptr += sizeof (UINT32);
DevPathLen = *(UINT16 *) Ptr;
Ptr += sizeof (UINT16);
Ptr += StrSize ((UINT16 *) Ptr);
DevPath = (EFI_DEVICE_PATH_PROTOCOL *) Ptr;
if (BBS_DEVICE_PATH != DevPath->Type || BBS_BBS_DP != DevPath->SubType) {
SafeFreePool (BootOptionVar);
continue;
}
Ptr += DevPathLen;
if (DevType == ((BBS_TABLE *) Ptr)->DeviceType) {
//
// We don't want to process twice for a device type
//
SafeFreePool (BootOptionVar);
continue;
}
Status = BdsSetBootPriority4SameTypeDev (
((BBS_TABLE *) Ptr)->DeviceType,
LocalBbsTable,
&Priority
);
SafeFreePool (BootOptionVar);
if (EFI_ERROR (Status)) {
break;
}
}
if (BootOrder != NULL) {
SafeFreePool (BootOrder);
}
//
// For debug
//
PrintBbsTable (LocalBbsTable);
return Status;
}
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