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audk/IntelFrameworkModulePkg/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 - 2011, Intel Corporation. All rights reserved.<BR>
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"
BOOT_OPTION_BBS_MAPPING *mBootOptionBbsMapping = NULL;
UINTN mBootOptionBbsMappingCount = 0;
/**
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.
**/
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;
}
/**
Build Legacy Device Name String according.
@param CurBBSEntry BBS Table.
@param Index Index.
@param BufSize The buffer size.
@param BootString The output string.
**/
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 || CurBBSEntry->DeviceType == BBS_CDROM)) {
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];
CHAR16 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 ((*BootOrderList) == NULL) {
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
//
UnicodeStrToAsciiStr (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
);
FreePool (Buffer);
Buffer = NULL;
NewBootOrderList = AllocateZeroPool (*BootOrderListSize + sizeof (UINT16));
if (NULL == NewBootOrderList) {
FreePool (NewBbsDevPathNode);
FreePool (CurrentBbsDevPath);
return EFI_OUT_OF_RESOURCES;
}
if (*BootOrderList != NULL) {
CopyMem (NewBootOrderList, *BootOrderList, *BootOrderListSize);
FreePool (*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;
}
/**
Re-order the Boot Option according to the DevOrder.
The routine re-orders the Boot Option in BootOption array according to
the order specified by DevOrder.
@param BootOption Pointer to buffer containing the Boot Option Numbers
@param BootOptionCount Count of the Boot Option Numbers
@param DevOrder Pointer to buffer containing the BBS Index,
high 8-bit value 0xFF indicating a disabled boot option
@param DevOrderCount Count of the BBS Index
@param EnBootOption Pointer to buffer receiving the enabled Boot Option Numbers
@param EnBootOptionCount Count of the enabled Boot Option Numbers
@param DisBootOption Pointer to buffer receiving the disabled Boot Option Numbers
@param DisBootOptionCount Count of the disabled Boot Option Numbers
**/
VOID
OrderLegacyBootOption4SameType (
UINT16 *BootOption,
UINTN BootOptionCount,
UINT16 *DevOrder,
UINTN DevOrderCount,
UINT16 *EnBootOption,
UINTN *EnBootOptionCount,
UINT16 *DisBootOption,
UINTN *DisBootOptionCount
)
{
UINTN Index;
UINTN MappingIndex;
UINT16 *NewBootOption;
UINT16 BbsType;
*DisBootOptionCount = 0;
*EnBootOptionCount = 0;
BbsType = 0;
//
// Record the corresponding Boot Option Numbers according to the DevOrder
// Record the EnBootOption and DisBootOption according to the DevOrder
//
NewBootOption = AllocatePool (DevOrderCount * sizeof (UINT16));
while (DevOrderCount-- != 0) {
for (Index = 0; Index < mBootOptionBbsMappingCount; Index++) {
if (mBootOptionBbsMapping[Index].BbsIndex == (DevOrder[DevOrderCount] & 0xFF)) {
BbsType = mBootOptionBbsMapping[Index].BbsType;
NewBootOption[DevOrderCount] = mBootOptionBbsMapping[Index].BootOptionNumber;
if ((DevOrder[DevOrderCount] & 0xFF00) == 0xFF00) {
DisBootOption[*DisBootOptionCount] = NewBootOption[DevOrderCount];
(*DisBootOptionCount)++;
} else {
EnBootOption[*EnBootOptionCount] = NewBootOption[DevOrderCount];
(*EnBootOptionCount)++;
}
break;
}
}
}
for (Index = 0; Index < BootOptionCount; Index++) {
//
// Find the start position for the BbsType in BootOption
//
for (MappingIndex = 0; MappingIndex < mBootOptionBbsMappingCount; MappingIndex++) {
if (mBootOptionBbsMapping[MappingIndex].BbsType == BbsType && mBootOptionBbsMapping[MappingIndex].BootOptionNumber == BootOption[Index]) {
break;
}
}
//
// Overwrite the old BootOption
//
if (MappingIndex < mBootOptionBbsMappingCount) {
CopyMem (&BootOption[Index], NewBootOption, (*DisBootOptionCount + *EnBootOptionCount) * sizeof (UINT16));
break;
}
}
}
/**
Group the legacy boot options in the BootOption.
The routine assumes the boot options in the beginning that covers all the device
types are ordered properly and re-position the following boot options just after
the corresponding boot options with the same device type.
For example:
1. Input = [Harddisk1 CdRom2 Efi1 Harddisk0 CdRom0 CdRom1 Harddisk2 Efi0]
Assuming [Harddisk1 CdRom2 Efi1] is ordered properly
Output = [Harddisk1 Harddisk0 Harddisk2 CdRom2 CdRom0 CdRom1 Efi1 Efi0]
2. Input = [Efi1 Efi0 CdRom1 Harddisk0 Harddisk1 Harddisk2 CdRom0 CdRom2]
Assuming [Efi1 Efi0 CdRom1 Harddisk0] is ordered properly
Output = [Efi1 Efi0 CdRom1 CdRom0 CdRom2 Harddisk0 Harddisk1 Harddisk2]
@param BootOption Pointer to buffer containing Boot Option Numbers
@param BootOptionCount Count of the Boot Option Numbers
**/
VOID
GroupMultipleLegacyBootOption4SameType (
UINT16 *BootOption,
UINTN BootOptionCount
)
{
UINTN DeviceTypeIndex[7];
UINTN Index;
UINTN MappingIndex;
UINTN *NextIndex;
UINT16 OptionNumber;
UINTN DeviceIndex;
SetMem (DeviceTypeIndex, sizeof (DeviceTypeIndex), 0xFF);
for (Index = 0; Index < BootOptionCount; Index++) {
//
// Find the DeviceType
//
for (MappingIndex = 0; MappingIndex < mBootOptionBbsMappingCount; MappingIndex++) {
if (mBootOptionBbsMapping[MappingIndex].BootOptionNumber == BootOption[Index]) {
break;
}
}
if (MappingIndex == mBootOptionBbsMappingCount) {
//
// Is not a legacy boot option
//
continue;
}
ASSERT ((mBootOptionBbsMapping[MappingIndex].BbsType & 0xF) <
sizeof (DeviceTypeIndex) / sizeof (DeviceTypeIndex[0]));
NextIndex = &DeviceTypeIndex[mBootOptionBbsMapping[MappingIndex].BbsType & 0xF];
if (*NextIndex == (UINTN) -1) {
//
// *NextIndex is the index in BootOption to put the next Option Number for the same type
//
*NextIndex = Index + 1;
} else {
//
// insert the current boot option before *NextIndex, causing [*Next .. Index] shift right one position
//
OptionNumber = BootOption[Index];
CopyMem (&BootOption[*NextIndex + 1], &BootOption[*NextIndex], (Index - *NextIndex) * sizeof (UINT16));
BootOption[*NextIndex] = OptionNumber;
//
// Update the DeviceTypeIndex array to reflect the right shift operation
//
for (DeviceIndex = 0; DeviceIndex < sizeof (DeviceTypeIndex) / sizeof (DeviceTypeIndex[0]); DeviceIndex++) {
if (DeviceTypeIndex[DeviceIndex] != (UINTN) -1 && DeviceTypeIndex[DeviceIndex] >= *NextIndex) {
DeviceTypeIndex[DeviceIndex]++;
}
}
}
}
}
/**
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
EFIAPI
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 (BootOrder == NULL) {
BootOrderSize = 0;
}
Index = 0;
while (Index < BootOrderSize / sizeof (UINT16)) {
UnicodeSPrint (BootOption, sizeof (BootOption), L"Boot%04x", BootOrder[Index]);
BootOptionVar = BdsLibGetVariableAndSize (
BootOption,
&gEfiGlobalVariableGuid,
&BootOptionSize
);
if (NULL == BootOptionVar) {
BootOptionSize = 0;
Status = gRT->GetVariable (
BootOption,
&gEfiGlobalVariableGuid,
NULL,
&BootOptionSize,
BootOptionVar
);
if (Status == EFI_NOT_FOUND) {
//
// Update BootOrder
//
BdsDeleteBootOption (
BootOrder[Index],
BootOrder,
&BootOrderSize
);
continue;
} else {
FreePool (BootOrder);
return EFI_OUT_OF_RESOURCES;
}
}
//
// Skip Non-Legacy boot option
//
if (!BdsIsLegacyBootOption (BootOptionVar, &BbsEntry, &BbsIndex)) {
if (BootOptionVar!= NULL) {
FreePool (BootOptionVar);
}
Index++;
continue;
}
if (BbsIndex < BbsCount) {
//
// 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;
}
}
if (BootOptionVar != NULL) {
FreePool (BootOptionVar);
}
//
// should delete
//
BdsDeleteBootOption (
BootOrder[Index],
BootOrder,
&BootOrderSize
);
}
//
// Adjust the number of boot options.
//
if (BootOrderSize != 0) {
Status = gRT->SetVariable (
L"BootOrder",
&gEfiGlobalVariableGuid,
VAR_FLAG,
BootOrderSize,
BootOrder
);
} else {
EfiLibDeleteVariable (L"BootOrder", &gEfiGlobalVariableGuid);
}
if (BootOrder != NULL) {
FreePool (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 DevName Device name.
@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
BdsFindLegacyBootOptionByDevTypeAndName (
IN UINT16 *BootOrder,
IN UINTN BootOptionNum,
IN UINT16 DevType,
IN CHAR16 *DevName,
OUT UINT32 *Attribute,
OUT UINT16 *BbsIndex,
OUT UINT16 *OptionNumber
)
{
UINTN Index;
CHAR16 BootOption[9];
UINTN BootOptionSize;
UINT8 *BootOptionVar;
BBS_TABLE *BbsEntry;
BOOLEAN Found;
BbsEntry = NULL;
Found = FALSE;
if (NULL == BootOrder) {
return Found;
}
//
// Loop all boot option from variable
//
for (Index = 0; Index < BootOptionNum; Index++) {
UnicodeSPrint (BootOption, sizeof (BootOption), L"Boot%04x", (UINTN) BootOrder[Index]);
BootOptionVar = BdsLibGetVariableAndSize (
BootOption,
&gEfiGlobalVariableGuid,
&BootOptionSize
);
if (NULL == BootOptionVar) {
continue;
}
//
// Skip Non-legacy boot option
//
if (!BdsIsLegacyBootOption (BootOptionVar, &BbsEntry, BbsIndex)) {
FreePool (BootOptionVar);
continue;
}
if (
(BbsEntry->DeviceType != DevType) ||
(StrCmp (DevName, (CHAR16*)(BootOptionVar + sizeof (UINT32) + sizeof (UINT16))) != 0)
) {
FreePool (BootOptionVar);
continue;
}
*Attribute = *(UINT32 *) BootOptionVar;
*OptionNumber = BootOrder[Index];
Found = TRUE;
FreePool (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;
//
// Create device path node.
//
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.
@retval EFI_NOT_FOUND No legacy boot options is found.
@retval EFI_OUT_OF_RESOURCE No enough memory.
@return Other value LegacyBoot options are not added.
**/
EFI_STATUS
EFIAPI
BdsAddNonExistingLegacyBootOptions (
VOID
)
{
UINT16 *BootOrder;
UINTN BootOrderSize;
EFI_STATUS Status;
CHAR16 Desc[100];
UINT16 HddCount;
UINT16 BbsCount;
HDD_INFO *LocalHddInfo;
BBS_TABLE *LocalBbsTable;
UINT16 BbsIndex;
EFI_LEGACY_BIOS_PROTOCOL *LegacyBios;
UINT16 Index;
UINT32 Attribute;
UINT16 OptionNumber;
BOOLEAN Exist;
HddCount = 0;
BbsCount = 0;
LocalHddInfo = NULL;
LocalBbsTable = NULL;
Status = EfiLibLocateProtocol (&gEfiLegacyBiosProtocolGuid, (VOID **) &LegacyBios);
if (EFI_ERROR (Status)) {
return Status;
}
if (mBootOptionBbsMapping != NULL) {
FreePool (mBootOptionBbsMapping);
mBootOptionBbsMapping = NULL;
mBootOptionBbsMappingCount = 0;
}
LegacyBios->GetBbsInfo (
LegacyBios,
&HddCount,
&LocalHddInfo,
&BbsCount,
&LocalBbsTable
);
BootOrder = BdsLibGetVariableAndSize (
L"BootOrder",
&gEfiGlobalVariableGuid,
&BootOrderSize
);
if (BootOrder == NULL) {
BootOrderSize = 0;
}
for (Index = 0; Index < BbsCount; Index++) {
if ((LocalBbsTable[Index].BootPriority == BBS_IGNORE_ENTRY) ||
(LocalBbsTable[Index].BootPriority == BBS_DO_NOT_BOOT_FROM)
) {
continue;
}
BdsBuildLegacyDevNameString (&LocalBbsTable[Index], Index, sizeof (Desc), Desc);
Exist = BdsFindLegacyBootOptionByDevTypeAndName (
BootOrder,
BootOrderSize / sizeof (UINT16),
LocalBbsTable[Index].DeviceType,
Desc,
&Attribute,
&BbsIndex,
&OptionNumber
);
if (!Exist) {
//
// 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;
}
BbsIndex = Index;
OptionNumber = BootOrder[BootOrderSize / sizeof (UINT16) - 1];
}
ASSERT (BbsIndex == Index);
//
// Save the BbsIndex
//
mBootOptionBbsMapping = ReallocatePool (
mBootOptionBbsMappingCount * sizeof (BOOT_OPTION_BBS_MAPPING),
(mBootOptionBbsMappingCount + 1) * sizeof (BOOT_OPTION_BBS_MAPPING),
mBootOptionBbsMapping
);
ASSERT (mBootOptionBbsMapping != NULL);
mBootOptionBbsMapping[mBootOptionBbsMappingCount].BootOptionNumber = OptionNumber;
mBootOptionBbsMapping[mBootOptionBbsMappingCount].BbsIndex = Index;
mBootOptionBbsMapping[mBootOptionBbsMappingCount].BbsType = LocalBbsTable[Index].DeviceType;
mBootOptionBbsMappingCount ++;
}
//
// Group the Boot Option Number in BootOrder for the same type devices
//
GroupMultipleLegacyBootOption4SameType (
BootOrder,
BootOrderSize / sizeof (UINT16)
);
if (BootOrderSize > 0) {
Status = gRT->SetVariable (
L"BootOrder",
&gEfiGlobalVariableGuid,
VAR_FLAG,
BootOrderSize,
BootOrder
);
} else {
EfiLibDeleteVariable (L"BootOrder", &gEfiGlobalVariableGuid);
}
if (BootOrder != NULL) {
FreePool (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.
@retval EFI_OUT_OF_RESOURCES Memmory or storage is not enough.
@retval EFI_DEVICE_ERROR Fail to add the device order into EFI variable fail
because of hardware error.
**/
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;
BM_LEGACY_DEV_ORDER_CONTEXT *DevOrder;
BM_LEGACY_DEV_ORDER_CONTEXT *DevOrderPtr;
EFI_STATUS Status;
FDCount = 0;
HDCount = 0;
CDCount = 0;
NETCount = 0;
BEVCount = 0;
TotalSize = 0;
HeaderSize = sizeof (BBS_TYPE) + sizeof (UINT16);
DevOrder = NULL;
Status = EFI_SUCCESS;
//
// Count all boot devices
//
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);
//
// Create buffer to hold all boot device order
//
DevOrder = AllocateZeroPool (TotalSize);
if (NULL == DevOrder) {
return EFI_OUT_OF_RESOURCES;
}
DevOrderPtr = DevOrder;
DevOrderPtr->BbsType = BBS_FLOPPY;
DevOrderPtr->Length = (UINT16) (sizeof (DevOrderPtr->Length) + FDCount * sizeof (UINT16));
DevOrderPtr = (BM_LEGACY_DEV_ORDER_CONTEXT *) BdsFillDevOrderBuf (BbsTable, BBS_FLOPPY, BbsCount, DevOrderPtr->Data);
DevOrderPtr->BbsType = BBS_HARDDISK;
DevOrderPtr->Length = (UINT16) (sizeof (UINT16) + HDCount * sizeof (UINT16));
DevOrderPtr = (BM_LEGACY_DEV_ORDER_CONTEXT *) BdsFillDevOrderBuf (BbsTable, BBS_HARDDISK, BbsCount, DevOrderPtr->Data);
DevOrderPtr->BbsType = BBS_CDROM;
DevOrderPtr->Length = (UINT16) (sizeof (UINT16) + CDCount * sizeof (UINT16));
DevOrderPtr = (BM_LEGACY_DEV_ORDER_CONTEXT *) BdsFillDevOrderBuf (BbsTable, BBS_CDROM, BbsCount, DevOrderPtr->Data);
DevOrderPtr->BbsType = BBS_EMBED_NETWORK;
DevOrderPtr->Length = (UINT16) (sizeof (UINT16) + NETCount * sizeof (UINT16));
DevOrderPtr = (BM_LEGACY_DEV_ORDER_CONTEXT *) BdsFillDevOrderBuf (BbsTable, BBS_EMBED_NETWORK, BbsCount, DevOrderPtr->Data);
DevOrderPtr->BbsType = BBS_BEV_DEVICE;
DevOrderPtr->Length = (UINT16) (sizeof (UINT16) + BEVCount * sizeof (UINT16));
DevOrderPtr = (BM_LEGACY_DEV_ORDER_CONTEXT *) BdsFillDevOrderBuf (BbsTable, BBS_BEV_DEVICE, BbsCount, DevOrderPtr->Data);
ASSERT (TotalSize == (UINTN) ((UINT8 *) DevOrderPtr - (UINT8 *) DevOrder));
//
// Save device order for legacy boot device to variable.
//
Status = gRT->SetVariable (
VAR_LEGACY_DEV_ORDER,
&EfiLegacyDevOrderGuid,
VAR_FLAG,
TotalSize,
DevOrder
);
FreePool (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.
@retval EFI_NOT_FOUND The legacy boot devices are not found.
@retval EFI_OUT_OF_RESOURCES Memmory or storage is not enough.
@retval EFI_DEVICE_ERROR Fail to add the legacy device boot order into EFI variable
because of hardware error.
**/
EFI_STATUS
EFIAPI
BdsUpdateLegacyDevOrder (
VOID
)
{
BM_LEGACY_DEV_ORDER_CONTEXT *DevOrder;
BM_LEGACY_DEV_ORDER_CONTEXT *NewDevOrder;
BM_LEGACY_DEV_ORDER_CONTEXT *Ptr;
BM_LEGACY_DEV_ORDER_CONTEXT *NewPtr;
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;
UINT16 *NewFDPtr;
UINT16 *NewHDPtr;
UINT16 *NewCDPtr;
UINT16 *NewNETPtr;
UINT16 *NewBEVPtr;
UINT16 *NewDevPtr;
UINTN FDIndex;
UINTN HDIndex;
UINTN CDIndex;
UINTN NETIndex;
UINTN BEVIndex;
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;
}
Status = LegacyBios->GetBbsInfo (
LegacyBios,
&HddCount,
&LocalHddInfo,
&BbsCount,
&LocalBbsTable
);
if (EFI_ERROR (Status)) {
return Status;
}
DevOrder = 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;
}
//
// copy FD
//
Ptr = DevOrder;
NewPtr = NewDevOrder;
NewPtr->BbsType = Ptr->BbsType;
NewPtr->Length = (UINT16) (sizeof (UINT16) + FDCount * sizeof (UINT16));
for (Index = 0; Index < Ptr->Length / sizeof (UINT16) - 1; Index++) {
if (LocalBbsTable[Ptr->Data[Index] & 0xFF].BootPriority == BBS_IGNORE_ENTRY ||
LocalBbsTable[Ptr->Data[Index] & 0xFF].BootPriority == BBS_DO_NOT_BOOT_FROM ||
LocalBbsTable[Ptr->Data[Index] & 0xFF].DeviceType != BBS_FLOPPY
) {
continue;
}
NewPtr->Data[FDIndex] = Ptr->Data[Index];
FDIndex++;
}
NewFDPtr = NewPtr->Data;
//
// copy HD
//
Ptr = (BM_LEGACY_DEV_ORDER_CONTEXT *) (&Ptr->Data[Ptr->Length / sizeof (UINT16) - 1]);
NewPtr = (BM_LEGACY_DEV_ORDER_CONTEXT *) (&NewPtr->Data[NewPtr->Length / sizeof (UINT16) -1]);
NewPtr->BbsType = Ptr->BbsType;
NewPtr->Length = (UINT16) (sizeof (UINT16) + HDCount * sizeof (UINT16));
for (Index = 0; Index < Ptr->Length / sizeof (UINT16) - 1; Index++) {
if (LocalBbsTable[Ptr->Data[Index] & 0xFF].BootPriority == BBS_IGNORE_ENTRY ||
LocalBbsTable[Ptr->Data[Index] & 0xFF].BootPriority == BBS_DO_NOT_BOOT_FROM ||
LocalBbsTable[Ptr->Data[Index] & 0xFF].BootPriority == BBS_LOWEST_PRIORITY ||
LocalBbsTable[Ptr->Data[Index] & 0xFF].DeviceType != BBS_HARDDISK
) {
continue;
}
NewPtr->Data[HDIndex] = Ptr->Data[Index];
HDIndex++;
}
NewHDPtr = NewPtr->Data;
//
// copy CD
//
Ptr = (BM_LEGACY_DEV_ORDER_CONTEXT *) (&Ptr->Data[Ptr->Length / sizeof (UINT16) - 1]);
NewPtr = (BM_LEGACY_DEV_ORDER_CONTEXT *) (&NewPtr->Data[NewPtr->Length / sizeof (UINT16) -1]);
NewPtr->BbsType = Ptr->BbsType;
NewPtr->Length = (UINT16) (sizeof (UINT16) + CDCount * sizeof (UINT16));
for (Index = 0; Index < Ptr->Length / sizeof (UINT16) - 1; Index++) {
if (LocalBbsTable[Ptr->Data[Index] & 0xFF].BootPriority == BBS_IGNORE_ENTRY ||
LocalBbsTable[Ptr->Data[Index] & 0xFF].BootPriority == BBS_DO_NOT_BOOT_FROM ||
LocalBbsTable[Ptr->Data[Index] & 0xFF].BootPriority == BBS_LOWEST_PRIORITY ||
LocalBbsTable[Ptr->Data[Index] & 0xFF].DeviceType != BBS_CDROM
) {
continue;
}
NewPtr->Data[CDIndex] = Ptr->Data[Index];
CDIndex++;
}
NewCDPtr = NewPtr->Data;
//
// copy NET
//
Ptr = (BM_LEGACY_DEV_ORDER_CONTEXT *) (&Ptr->Data[Ptr->Length / sizeof (UINT16) - 1]);
NewPtr = (BM_LEGACY_DEV_ORDER_CONTEXT *) (&NewPtr->Data[NewPtr->Length / sizeof (UINT16) -1]);
NewPtr->BbsType = Ptr->BbsType;
NewPtr->Length = (UINT16) (sizeof (UINT16) + NETCount * sizeof (UINT16));
for (Index = 0; Index < Ptr->Length / sizeof (UINT16) - 1; Index++) {
if (LocalBbsTable[Ptr->Data[Index] & 0xFF].BootPriority == BBS_IGNORE_ENTRY ||
LocalBbsTable[Ptr->Data[Index] & 0xFF].BootPriority == BBS_DO_NOT_BOOT_FROM ||
LocalBbsTable[Ptr->Data[Index] & 0xFF].BootPriority == BBS_LOWEST_PRIORITY ||
LocalBbsTable[Ptr->Data[Index] & 0xFF].DeviceType != BBS_EMBED_NETWORK
) {
continue;
}
NewPtr->Data[NETIndex] = Ptr->Data[Index];
NETIndex++;
}
NewNETPtr = NewPtr->Data;
//
// copy BEV
//
Ptr = (BM_LEGACY_DEV_ORDER_CONTEXT *) (&Ptr->Data[Ptr->Length / sizeof (UINT16) - 1]);
NewPtr = (BM_LEGACY_DEV_ORDER_CONTEXT *) (&NewPtr->Data[NewPtr->Length / sizeof (UINT16) -1]);
NewPtr->BbsType = Ptr->BbsType;
NewPtr->Length = (UINT16) (sizeof (UINT16) + BEVCount * sizeof (UINT16));
for (Index = 0; Index < Ptr->Length / sizeof (UINT16) - 1; Index++) {
if (LocalBbsTable[Ptr->Data[Index] & 0xFF].BootPriority == BBS_IGNORE_ENTRY ||
LocalBbsTable[Ptr->Data[Index] & 0xFF].BootPriority == BBS_DO_NOT_BOOT_FROM ||
LocalBbsTable[Ptr->Data[Index] & 0xFF].BootPriority == BBS_LOWEST_PRIORITY ||
LocalBbsTable[Ptr->Data[Index] & 0xFF].DeviceType != BBS_BEV_DEVICE
) {
continue;
}
NewPtr->Data[BEVIndex] = Ptr->Data[Index];
BEVIndex++;
}
NewBEVPtr = NewPtr->Data;
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 != NULL) {
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
// insert it before disabled indexes.
//
for (Index2 = 0; Index2 < *Idx; Index2++) {
if ((NewDevPtr[Index2] & 0xFF00) == 0xFF00) {
break;
}
}
CopyMem (&NewDevPtr[Index2 + 1], &NewDevPtr[Index2], (*Idx - Index2) * sizeof (UINT16));
NewDevPtr[Index2] = (UINT16) (Index & 0xFF);
(*Idx)++;
}
}
}
FreePool (DevOrder);
Status = gRT->SetVariable (
VAR_LEGACY_DEV_ORDER,
&EfiLegacyDevOrderGuid,
VAR_FLAG,
TotalSize,
NewDevOrder
);
FreePool (NewDevOrder);
return Status;
}
/**
Set Boot Priority for specified device type.
@param DeviceType The device type.
@param BbsIndex The BBS index to set the highest priority. Ignore when -1.
@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.
@retval EFI_OUT_OF_RESOURCES Failed to get the efi variable of device order.
**/
EFI_STATUS
BdsSetBootPriority4SameTypeDev (
IN UINT16 DeviceType,
IN UINTN BbsIndex,
IN OUT BBS_TABLE *LocalBbsTable,
IN OUT UINT16 *Priority
)
{
BM_LEGACY_DEV_ORDER_CONTEXT *DevOrder;
BM_LEGACY_DEV_ORDER_CONTEXT *DevOrderPtr;
UINTN DevOrderSize;
UINTN Index;
DevOrder = BdsLibGetVariableAndSize (
VAR_LEGACY_DEV_ORDER,
&EfiLegacyDevOrderGuid,
&DevOrderSize
);
if (NULL == DevOrder) {
return EFI_OUT_OF_RESOURCES;
}
DevOrderPtr = DevOrder;
while ((UINT8 *) DevOrderPtr < (UINT8 *) DevOrder + DevOrderSize) {
if (DevOrderPtr->BbsType == DeviceType) {
break;
}
DevOrderPtr = (BM_LEGACY_DEV_ORDER_CONTEXT *) ((UINT8 *) DevOrderPtr + sizeof (BBS_TYPE) + DevOrderPtr->Length);
}
if ((UINT8 *) DevOrderPtr >= (UINT8 *) DevOrder + DevOrderSize) {
FreePool (DevOrder);
return EFI_NOT_FOUND;
}
if (BbsIndex != (UINTN) -1) {
LocalBbsTable[BbsIndex].BootPriority = *Priority;
(*Priority)++;
}
//
// If the high byte of the DevIndex is 0xFF, it indicates that this device has been disabled.
//
for (Index = 0; Index < DevOrderPtr->Length / sizeof (UINT16) - 1; Index++) {
if ((DevOrderPtr->Data[Index] & 0xFF00) == 0xFF00) {
//
// LocalBbsTable[DevIndex[Index] & 0xFF].BootPriority = BBS_DISABLED_ENTRY;
//
} else if (DevOrderPtr->Data[Index] != BbsIndex) {
LocalBbsTable[DevOrderPtr->Data[Index]].BootPriority = *Priority;
(*Priority)++;
}
}
FreePool (DevOrder);
return EFI_SUCCESS;
}
/**
Print the BBS Table.
@param LocalBbsTable The BBS table.
@param BbsCount The count of entry in BBS table.
**/
VOID
PrintBbsTable (
IN BBS_TABLE *LocalBbsTable,
IN UINT16 BbsCount
)
{
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 < BbsCount; 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.
@retval EFI_NOT_FOUND BBS entries can't be found.
@retval EFI_OUT_OF_RESOURCES Failed to get the legacy device boot order.
**/
EFI_STATUS
EFIAPI
BdsRefreshBbsTableForBoot (
IN BDS_COMMON_OPTION *Entry
)
{
EFI_STATUS Status;
UINT16 BbsIndex;
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;
CHAR16 BootOption[9];
UINT8 *Ptr;
UINT16 DevPathLen;
EFI_DEVICE_PATH_PROTOCOL *DevPath;
UINT16 *DeviceType;
UINTN DeviceTypeCount;
UINTN DeviceTypeIndex;
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;
BbsIndex = *(UINT16 *) ((BBS_TABLE *) Entry->LoadOptions + 1);
Status = BdsSetBootPriority4SameTypeDev (
DevType,
BbsIndex,
LocalBbsTable,
&Priority
);
if (EFI_ERROR (Status)) {
return Status;
}
}
//
// we have to set the boot priority for other BBS entries with different device types
//
BootOrder = BdsLibGetVariableAndSize (
L"BootOrder",
&gEfiGlobalVariableGuid,
&BootOrderSize
);
DeviceType = AllocatePool (BootOrderSize + sizeof (UINT16));
ASSERT (DeviceType != NULL);
DeviceType[0] = DevType;
DeviceTypeCount = 1;
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) {
FreePool (BootOptionVar);
continue;
}
Ptr += DevPathLen;
DevType = ((BBS_TABLE *) Ptr)->DeviceType;
for (DeviceTypeIndex = 0; DeviceTypeIndex < DeviceTypeCount; DeviceTypeIndex++) {
if (DeviceType[DeviceTypeIndex] == DevType) {
break;
}
}
if (DeviceTypeIndex < DeviceTypeCount) {
//
// We don't want to process twice for a device type
//
FreePool (BootOptionVar);
continue;
}
DeviceType[DeviceTypeCount] = DevType;
DeviceTypeCount++;
Status = BdsSetBootPriority4SameTypeDev (
DevType,
(UINTN) -1,
LocalBbsTable,
&Priority
);
FreePool (BootOptionVar);
if (EFI_ERROR (Status)) {
break;
}
}
if (BootOrder != NULL) {
FreePool (BootOrder);
}
DEBUG_CODE_BEGIN();
PrintBbsTable (LocalBbsTable, BbsCount);
DEBUG_CODE_END();
return Status;
}
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