Beispiel #1
0
EFI_STATUS
NtfsAcquireLockOrFail (
  VOID
  )
/*++

Routine Description:

  Lock the volume.
  If the lock is already in the acquired state, then EFI_ACCESS_DENIED is returned.
  Otherwise, EFI_SUCCESS is returned.

Arguments:

  None.

Returns:

  EFI_SUCCESS           - The volume is locked.
  EFI_ACCESS_DENIED     - The volume could not be locked because it is already locked.

--*/
{
  return EfiAcquireLockOrFail (&NtfsFsLock);
}
Beispiel #2
0
EFI_STATUS
fsw_efi_AcquireLockOrFail (
  VOID
)
{
  return EfiAcquireLockOrFail (&fsw_efi_Lock);
}
Beispiel #3
0
VOID
EfiAcquireLock (
  IN EFI_LOCK  *Lock
  )
/*++

Routine Description:

  Acquires ownership of the lock.
    
Arguments:

  Lock - The lock to acquire
    
Returns:

  Lock owned

--*/
{
  EFI_STATUS  Status;

  Status = EfiAcquireLockOrFail (Lock);

  //
  // Lock was already locked.
  //
  ASSERT_EFI_ERROR (Status);
}
Beispiel #4
0
VOID
EfiAcquireLock (
  IN EFI_LOCK  *Lock
  )
/*++

Routine Description:

  Raising to the task priority level of the mutual exclusion
  lock, and then acquires ownership of the lock.
    
Arguments:

  Lock - The lock to acquire
    
Returns:

  Lock owned

--*/
{
  EFI_STATUS  Status;

  Status = EfiAcquireLockOrFail (Lock);

  //
  // Lock was already locked.
  //
  ASSERT_EFI_ERROR (Status);
}
/**
  Remove an SMBIOS record.

  @param  This                  The EFI_SMBIOS_PROTOCOL instance.
  @param  SmbiosHandle          The handle of the SMBIOS record to remove.

  @retval EFI_SUCCESS           SMBIOS record was removed.
  @retval EFI_INVALID_PARAMETER SmbiosHandle does not specify a valid SMBIOS record.

**/
EFI_STATUS
EFIAPI
SmbiosRemove (
  IN CONST EFI_SMBIOS_PROTOCOL   *This,
  IN EFI_SMBIOS_HANDLE           SmbiosHandle
  )
{
  LIST_ENTRY                 *Link;
  LIST_ENTRY                 *Head;
  EFI_STATUS                 Status;
  EFI_SMBIOS_HANDLE          MaxSmbiosHandle;
  SMBIOS_INSTANCE            *Private;
  EFI_SMBIOS_ENTRY           *SmbiosEntry;
  SMBIOS_HANDLE_ENTRY        *HandleEntry;
  EFI_SMBIOS_TABLE_HEADER    *Record;

  //
  // Check args validity
  //
  GetMaxSmbiosHandle(This, &MaxSmbiosHandle);

  if (SmbiosHandle > MaxSmbiosHandle) {
    return EFI_INVALID_PARAMETER;
  }

  Private = SMBIOS_INSTANCE_FROM_THIS (This);
  //
  // Enter into critical section
  //  
  Status = EfiAcquireLockOrFail (&Private->DataLock);
  if (EFI_ERROR (Status)) {
    return Status;
  }

  Head = &Private->DataListHead;
  for (Link = Head->ForwardLink; Link != Head; Link = Link->ForwardLink) {
    SmbiosEntry = SMBIOS_ENTRY_FROM_LINK(Link);
    Record = (EFI_SMBIOS_TABLE_HEADER*)(SmbiosEntry->RecordHeader + 1);
    if (Record->Handle == SmbiosHandle) {
      //
      // Remove specified smobios record from DataList
      //
      RemoveEntryList(Link);
      FreePool(SmbiosEntry);
      // 
      // Remove this handle from AllocatedHandleList
      //
      Head = &Private->AllocatedHandleListHead;
      for (Link = Head->ForwardLink; Link != Head; Link = Link->ForwardLink) {
        HandleEntry = SMBIOS_HANDLE_ENTRY_FROM_LINK(Link);
        if (HandleEntry->SmbiosHandle == SmbiosHandle) {
          RemoveEntryList(Link);
          FreePool(HandleEntry);
          break;
        }
      }
      EfiReleaseLock (&Private->DataLock);
      return EFI_SUCCESS;
    }
  }

  //
  // Leave critical section
  //
  EfiReleaseLock (&Private->DataLock);
  return EFI_INVALID_PARAMETER;
  
}
/**
  Update the string associated with an existing SMBIOS record.

  @param  This                  The EFI_SMBIOS_PROTOCOL instance.
  @param  SmbiosHandle          SMBIOS Handle of structure that will have its string updated.
  @param  StringNumber          The non-zero string number of the string to update
  @param  String                Update the StringNumber string with String.

  @retval EFI_SUCCESS           SmbiosHandle had its StringNumber String updated.
  @retval EFI_INVALID_PARAMETER SmbiosHandle does not exist.
  @retval EFI_UNSUPPORTED       String was not added since it's longer than 64 significant characters.
  @retval EFI_NOT_FOUND         The StringNumber.is not valid for this SMBIOS record.

**/
EFI_STATUS
EFIAPI
SmbiosUpdateString (
  IN CONST EFI_SMBIOS_PROTOCOL      *This,
  IN EFI_SMBIOS_HANDLE              *SmbiosHandle,
  IN UINTN                          *StringNumber,
  IN CHAR8                          *String
  )
{
  UINTN                     InputStrLen;
  UINTN                     TargetStrLen;
  UINTN                     StrIndex;
  UINTN                     TargetStrOffset;
  UINTN                     NewEntrySize;
  CHAR8                     *StrStart;
  VOID                      *Raw;
  LIST_ENTRY                *Link;
  LIST_ENTRY                *Head;
  EFI_STATUS                Status;
  SMBIOS_INSTANCE           *Private;
  EFI_SMBIOS_ENTRY          *SmbiosEntry;
  EFI_SMBIOS_ENTRY          *ResizedSmbiosEntry;
  EFI_SMBIOS_HANDLE         MaxSmbiosHandle;
  EFI_SMBIOS_TABLE_HEADER   *Record;
  EFI_SMBIOS_RECORD_HEADER  *InternalRecord;
  
  //
  // Check args validity
  //
  GetMaxSmbiosHandle(This, &MaxSmbiosHandle);

  if (*SmbiosHandle > MaxSmbiosHandle) {
    return EFI_INVALID_PARAMETER;
  }

  if (String == NULL) {
    return EFI_ABORTED;
  }

  if (*StringNumber == 0) { //Slice - there should be a way to add a string if not exists
    return EFI_NOT_FOUND;
  }

  InputStrLen = AsciiStrLen(String);

  //
  // Reference SMBIOS 2.7, chapter 6.1.3, it will have no limit on the length of each individual text string
  //
  if (This->MajorVersion < 2 || (This->MajorVersion == 2 && This->MinorVersion < 7)) {
    if (InputStrLen > SMBIOS_STRING_MAX_LENGTH) {
      return EFI_UNSUPPORTED;
    }
  }

  Private = SMBIOS_INSTANCE_FROM_THIS (This);
  //
  // Enter into critical section
  //  
  Status = EfiAcquireLockOrFail (&Private->DataLock);
  if (EFI_ERROR (Status)) {
    return Status;
  }

  Head = &Private->DataListHead;
  for (Link = Head->ForwardLink; Link != Head; Link = Link->ForwardLink) {
    SmbiosEntry = SMBIOS_ENTRY_FROM_LINK(Link);
    Record = (EFI_SMBIOS_TABLE_HEADER*)(SmbiosEntry->RecordHeader + 1);

    if (Record->Handle == *SmbiosHandle) {
      //
      // Find out the specified Smbios record
      //
      if (*StringNumber > SmbiosEntry->RecordHeader->NumberOfStrings) {
        EfiReleaseLock (&Private->DataLock);
        return EFI_NOT_FOUND;
      }
      //
      // Point to unformed string section
      //
      StrStart = (CHAR8 *) Record + Record->Length;
     
      for (StrIndex = 1, TargetStrOffset = 0; StrIndex < *StringNumber; StrStart++, TargetStrOffset++) {
        //
        // A string ends in 00h
        //
        if (*StrStart == 0) {
          StrIndex++;
        }
        
        //
        // String section ends in double-null (0000h)
        //
        if (*StrStart == 0 && *(StrStart + 1) == 0) {
          EfiReleaseLock (&Private->DataLock);
          return EFI_NOT_FOUND;
        } 
      }

      if (*StrStart == 0) {
        StrStart++;
        TargetStrOffset++;
      }
      
      //
      // Now we get the string target
      //
      TargetStrLen = AsciiStrLen(StrStart);
      if (InputStrLen == TargetStrLen) {
        AsciiStrCpy(StrStart, String);
        EfiReleaseLock (&Private->DataLock);
        return EFI_SUCCESS;
      }

      //
      // Original string buffer size is not exactly match input string length.
      // Re-allocate buffer is needed.
      //
      NewEntrySize = SmbiosEntry->RecordSize + InputStrLen - TargetStrLen;
      ResizedSmbiosEntry = AllocateZeroPool (NewEntrySize);

      if (ResizedSmbiosEntry == NULL) {
        EfiReleaseLock (&Private->DataLock);
        return EFI_OUT_OF_RESOURCES;
      }

      InternalRecord  = (EFI_SMBIOS_RECORD_HEADER *) (ResizedSmbiosEntry + 1);
      Raw     = (VOID *) (InternalRecord + 1);

      //
      // Build internal record Header
      //
      InternalRecord->Version     = EFI_SMBIOS_RECORD_HEADER_VERSION;
      InternalRecord->HeaderSize  = (UINT16) sizeof (EFI_SMBIOS_RECORD_HEADER);
      InternalRecord->RecordSize  = SmbiosEntry->RecordHeader->RecordSize + InputStrLen - TargetStrLen;
      InternalRecord->ProducerHandle = SmbiosEntry->RecordHeader->ProducerHandle;
      InternalRecord->NumberOfStrings = SmbiosEntry->RecordHeader->NumberOfStrings;

      //
      // Copy smbios structure and optional strings.
      //
      CopyMem (Raw, SmbiosEntry->RecordHeader + 1, Record->Length + TargetStrOffset);
      CopyMem ((VOID*)((UINTN)Raw + Record->Length + TargetStrOffset), String, InputStrLen + 1);
      CopyMem ((CHAR8*)((UINTN)Raw + Record->Length + TargetStrOffset + InputStrLen + 1),
               (CHAR8*)Record + Record->Length + TargetStrOffset + TargetStrLen + 1,
               SmbiosEntry->RecordHeader->RecordSize - sizeof (EFI_SMBIOS_RECORD_HEADER) - Record->Length - TargetStrOffset - TargetStrLen - 1);

      //
      // Insert new record
      //
      ResizedSmbiosEntry->Signature    = EFI_SMBIOS_ENTRY_SIGNATURE;
      ResizedSmbiosEntry->RecordHeader = InternalRecord;
      ResizedSmbiosEntry->RecordSize   = NewEntrySize;
      InsertTailList (Link->ForwardLink, &ResizedSmbiosEntry->Link);

      //
      // Remove old record
      //
      RemoveEntryList(Link);
      FreePool(SmbiosEntry);
      EfiReleaseLock (&Private->DataLock);
      return EFI_SUCCESS;
    }
  }

  EfiReleaseLock (&Private->DataLock);
  return EFI_INVALID_PARAMETER;
}
/**
  Add an SMBIOS record.

  @param  This                  The EFI_SMBIOS_PROTOCOL instance.
  @param  ProducerHandle        The handle of the controller or driver associated with the SMBIOS information. NULL
                                means no handle.
  @param  SmbiosHandle          On entry, if non-zero, the handle of the SMBIOS record. If zero, then a unique handle
                                will be assigned to the SMBIOS record. If the SMBIOS handle is already in use
                                EFI_ALREADY_STARTED is returned and the SMBIOS record is not updated.
  @param  Record                The data for the fixed portion of the SMBIOS record. The format of the record is
                                determined by EFI_SMBIOS_TABLE_HEADER.Type. The size of the formatted area is defined 
                                by EFI_SMBIOS_TABLE_HEADER.Length and either followed by a double-null (0x0000) or 
                                a set of null terminated strings and a null.

  @retval EFI_SUCCESS           Record was added.
  @retval EFI_OUT_OF_RESOURCES  Record was not added due to lack of system resources.
  @retval EFI_ALREADY_STARTED   The SmbiosHandle passed in was already in use.

**/
EFI_STATUS
EFIAPI
SmbiosAdd (
  IN CONST EFI_SMBIOS_PROTOCOL  *This,
  IN EFI_HANDLE                 ProducerHandle, OPTIONAL
  IN OUT EFI_SMBIOS_HANDLE      *SmbiosHandle,
  IN EFI_SMBIOS_TABLE_HEADER    *Record
  )
{
  VOID                        *Raw;
  UINTN                       TotalSize;
  UINTN                       RecordSize;
  UINTN                       StructureSize;
  UINTN                       NumberOfStrings;
  EFI_STATUS                  Status;
  LIST_ENTRY                  *Head;
  SMBIOS_INSTANCE             *Private;
  EFI_SMBIOS_ENTRY            *SmbiosEntry;
  EFI_SMBIOS_HANDLE           MaxSmbiosHandle;
  SMBIOS_HANDLE_ENTRY         *HandleEntry;
  EFI_SMBIOS_RECORD_HEADER    *InternalRecord;
  
  if (SmbiosHandle == NULL) {
    return EFI_INVALID_PARAMETER;
  }
  
  Private = SMBIOS_INSTANCE_FROM_THIS (This);
  //
  // Check whether SmbiosHandle is already in use
  //
  Head = &Private->AllocatedHandleListHead;
  if (*SmbiosHandle != 0 && CheckSmbiosHandleExistance(Head, *SmbiosHandle)) {
    return EFI_ALREADY_STARTED;
  }

  //
  // when SmbiosHandle is zero, an available handle will be assigned
  //
  if (*SmbiosHandle == 0) {
    Status = GetAvailableSmbiosHandle(This, SmbiosHandle);
    if (EFI_ERROR(Status)) {
      return Status;
    }
  } else {
    //
    // Check this handle validity
    //
    GetMaxSmbiosHandle(This, &MaxSmbiosHandle);
    if (*SmbiosHandle > MaxSmbiosHandle) {
      return EFI_INVALID_PARAMETER;
    }
  }

  //
  // Calculate record size and string number
  //
  Status = GetSmbiosStructureSize(This, Record, &StructureSize, &NumberOfStrings);
  if (EFI_ERROR(Status)) {
    return Status;
  }

  //
  // Enter into critical section
  //  
  Status = EfiAcquireLockOrFail (&Private->DataLock);
  if (EFI_ERROR (Status)) {
    return Status;
  }
  
  RecordSize  = sizeof (EFI_SMBIOS_RECORD_HEADER) + StructureSize;
  TotalSize   = sizeof (EFI_SMBIOS_ENTRY) + RecordSize;

  //
  // Allocate internal buffer
  //
  SmbiosEntry = AllocateZeroPool (TotalSize);
  if (SmbiosEntry == NULL) {
    EfiReleaseLock (&Private->DataLock);
    return EFI_OUT_OF_RESOURCES;
  }
  HandleEntry = AllocateZeroPool (sizeof(SMBIOS_HANDLE_ENTRY));
  if (HandleEntry == NULL) {
    EfiReleaseLock (&Private->DataLock);
    return EFI_OUT_OF_RESOURCES;
  }

  //
  // Build Handle Entry and insert into linked list
  //
  HandleEntry->Signature     = SMBIOS_HANDLE_ENTRY_SIGNATURE;
  HandleEntry->SmbiosHandle  = *SmbiosHandle;
  InsertTailList(&Private->AllocatedHandleListHead, &HandleEntry->Link);

  InternalRecord  = (EFI_SMBIOS_RECORD_HEADER *) (SmbiosEntry + 1);
  Raw     = (VOID *) (InternalRecord + 1);

  //
  // Build internal record Header
  //
  InternalRecord->Version     = EFI_SMBIOS_RECORD_HEADER_VERSION;
  InternalRecord->HeaderSize  = (UINT16) sizeof (EFI_SMBIOS_RECORD_HEADER);
  InternalRecord->RecordSize  = RecordSize;
  InternalRecord->ProducerHandle = ProducerHandle;
  InternalRecord->NumberOfStrings = NumberOfStrings;
  //
  // Insert record into the internal linked list
  //
  SmbiosEntry->Signature    = EFI_SMBIOS_ENTRY_SIGNATURE;
  SmbiosEntry->RecordHeader = InternalRecord;
  SmbiosEntry->RecordSize   = TotalSize;
  InsertTailList (&Private->DataListHead, &SmbiosEntry->Link);

  CopyMem (Raw, Record, StructureSize);
  ((EFI_SMBIOS_TABLE_HEADER*)Raw)->Handle = *SmbiosHandle;

  //
  // Leave critical section
  //
  EfiReleaseLock (&Private->DataLock);
  return EFI_SUCCESS;
}
Beispiel #8
0
/**
  Log data record into the data logging hub

  @param This                   Protocol instance structure
  @param DataRecordGuid         GUID that defines record contents
  @param ProducerName           GUID that defines the name of the producer of the data
  @param DataRecordClass        Class that defines generic record type
  @param RawData                Data Log record as defined by DataRecordGuid
  @param RawDataSize            Size of Data Log data in bytes

  @retval EFI_SUCCESS           If data was logged
  @retval EFI_OUT_OF_RESOURCES  If data was not logged due to lack of system
                                resources.
**/
EFI_STATUS
EFIAPI
DataHubLogData (
  IN  EFI_DATA_HUB_PROTOCOL   *This,
  IN  EFI_GUID                *DataRecordGuid,
  IN  EFI_GUID                *ProducerName,
  IN  UINT64                  DataRecordClass,
  IN  VOID                    *RawData,
  IN  UINT32                  RawDataSize
  )
{
  EFI_STATUS              Status;
  DATA_HUB_INSTANCE       *Private;
  EFI_DATA_ENTRY          *LogEntry;
  UINT32                  TotalSize;
  UINT32                  RecordSize;
  EFI_DATA_RECORD_HEADER  *Record;
  VOID                    *Raw;
  DATA_HUB_FILTER_DRIVER  *FilterEntry;
  LIST_ENTRY              *Link;
  LIST_ENTRY              *Head;
  EFI_TIME                LogTime;

  Private = DATA_HUB_INSTANCE_FROM_THIS (This);

  //
  // Combine the storage for the internal structs and a copy of the log record.
  //  Record follows PrivateLogEntry. The consumer will be returned a pointer
  //  to Record so we don't what it to be the thing that was allocated from
  //  pool, so the consumer can't free an data record by mistake.
  //
  RecordSize  = sizeof (EFI_DATA_RECORD_HEADER) + RawDataSize;
  TotalSize   = sizeof (EFI_DATA_ENTRY) + RecordSize;

  //
  // First try to get log time at TPL level <= TPL_CALLBACK.
  //
  ZeroMem (&LogTime, sizeof (LogTime));
  if (EfiGetCurrentTpl() <= TPL_CALLBACK) {
    gRT->GetTime (&LogTime, NULL);
  }

  //
  // The Logging action is the critical section, so it is locked.
  //  The MTC asignment & update and logging must be an
  //  atomic operation, so use the lock.
  //
  Status = EfiAcquireLockOrFail (&Private->DataLock);
  if (EFI_ERROR (Status)) {
    //
    // Reentrancy detected so exit!
    //
    return Status;
  }

  LogEntry = AllocatePool (TotalSize);

  if (LogEntry == NULL) {
    EfiReleaseLock (&Private->DataLock);
    return EFI_OUT_OF_RESOURCES;
  }

  ZeroMem (LogEntry, TotalSize);

  Record  = (EFI_DATA_RECORD_HEADER *) (LogEntry + 1);
  Raw     = (VOID *) (Record + 1);

  //
  // Build Standard Log Header
  //
  Record->Version     = EFI_DATA_RECORD_HEADER_VERSION;
  Record->HeaderSize  = (UINT16) sizeof (EFI_DATA_RECORD_HEADER);
  Record->RecordSize  = RecordSize;
  CopyMem (&Record->DataRecordGuid, DataRecordGuid, sizeof (EFI_GUID));
  CopyMem (&Record->ProducerName, ProducerName, sizeof (EFI_GUID));
  Record->DataRecordClass   = DataRecordClass;

  //
  // Ensure LogMonotonicCount is not zero
  //
  Record->LogMonotonicCount = ++Private->GlobalMonotonicCount;

  CopyMem (&Record->LogTime, &LogTime, sizeof (LogTime));

  //
  // Insert log into the internal linked list.
  //
  LogEntry->Signature   = EFI_DATA_ENTRY_SIGNATURE;
  LogEntry->Record      = Record;
  LogEntry->RecordSize  = sizeof (EFI_DATA_ENTRY) + RawDataSize;
  InsertTailList (&Private->DataListHead, &LogEntry->Link);

  CopyMem (Raw, RawData, RawDataSize);

  EfiReleaseLock (&Private->DataLock);

  //
  // Send Signal to all the filter drivers which are interested
  //  in the record's class and guid.
  //
  Head = &Private->FilterDriverListHead;
  for (Link = GetFirstNode(Head); Link != Head; Link = GetNextNode(Head, Link)) {
    FilterEntry = FILTER_ENTRY_FROM_LINK (Link);
    if (((FilterEntry->ClassFilter & DataRecordClass) != 0) &&
        (CompareGuid (&FilterEntry->FilterDataRecordGuid, &gZeroGuid) ||
         CompareGuid (&FilterEntry->FilterDataRecordGuid, DataRecordGuid))) {
      gBS->SignalEvent (FilterEntry->Event);
    }
  }

  return EFI_SUCCESS;
}
Beispiel #9
0
/**
  Remove an SMBIOS record.

  @param  This                  The EFI_SMBIOS_PROTOCOL instance.
  @param  SmbiosHandle          The handle of the SMBIOS record to remove.

  @retval EFI_SUCCESS           SMBIOS record was removed.
  @retval EFI_INVALID_PARAMETER SmbiosHandle does not specify a valid SMBIOS record.

**/
EFI_STATUS
EFIAPI
SmbiosRemove (
  IN CONST EFI_SMBIOS_PROTOCOL   *This,
  IN EFI_SMBIOS_HANDLE           SmbiosHandle
  )
{
  LIST_ENTRY                 *Link;
  LIST_ENTRY                 *Head;
  EFI_STATUS                 Status;
  EFI_SMBIOS_HANDLE          MaxSmbiosHandle;
  SMBIOS_INSTANCE            *Private;
  EFI_SMBIOS_ENTRY           *SmbiosEntry;
  SMBIOS_HANDLE_ENTRY        *HandleEntry;
  EFI_SMBIOS_TABLE_HEADER    *Record;

  //
  // Check args validity
  //
  GetMaxSmbiosHandle(This, &MaxSmbiosHandle);

  if (SmbiosHandle > MaxSmbiosHandle) {
    return EFI_INVALID_PARAMETER;
  }

  Private = SMBIOS_INSTANCE_FROM_THIS (This);
  //
  // Enter into critical section
  //
  Status = EfiAcquireLockOrFail (&Private->DataLock);
  if (EFI_ERROR (Status)) {
    return Status;
  }

  Head = &Private->DataListHead;
  for (Link = Head->ForwardLink; Link != Head; Link = Link->ForwardLink) {
    SmbiosEntry = SMBIOS_ENTRY_FROM_LINK(Link);
    Record = (EFI_SMBIOS_TABLE_HEADER*)(SmbiosEntry->RecordHeader + 1);
    if (Record->Handle == SmbiosHandle) {
      //
      // Remove specified smobios record from DataList
      //
      RemoveEntryList(Link);
      //
      // Remove this handle from AllocatedHandleList
      //
      Head = &Private->AllocatedHandleListHead;
      for (Link = Head->ForwardLink; Link != Head; Link = Link->ForwardLink) {
        HandleEntry = SMBIOS_HANDLE_ENTRY_FROM_LINK(Link);
        if (HandleEntry->SmbiosHandle == SmbiosHandle) {
          RemoveEntryList(Link);
          FreePool(HandleEntry);
          break;
        }
      }
      //
      // Some UEFI drivers (such as network) need some information in SMBIOS table.
      // Here we create SMBIOS table and publish it in
      // configuration table, so other UEFI drivers can get SMBIOS table from
      // configuration table without depending on PI SMBIOS protocol.
      //
      if (SmbiosEntry->Smbios32BitTable) {
        DEBUG ((EFI_D_INFO, "SmbiosRemove: remove from 32-bit table\n"));
      }
      if (SmbiosEntry->Smbios64BitTable) {
        DEBUG ((EFI_D_INFO, "SmbiosRemove: remove from 64-bit table\n"));
      }
      //
      // Update the whole SMBIOS table again based on which table the removed SMBIOS record is in.
      //
      SmbiosTableConstruction (SmbiosEntry->Smbios32BitTable, SmbiosEntry->Smbios64BitTable);
      FreePool(SmbiosEntry);
      EfiReleaseLock (&Private->DataLock);
      return EFI_SUCCESS;
    }
  }

  //
  // Leave critical section
  //
  EfiReleaseLock (&Private->DataLock);
  return EFI_INVALID_PARAMETER;

}
Beispiel #10
0
/**
  Update the string associated with an existing SMBIOS record.

  @param  This                  The EFI_SMBIOS_PROTOCOL instance.
  @param  SmbiosHandle          SMBIOS Handle of structure that will have its string updated.
  @param  StringNumber          The non-zero string number of the string to update
  @param  String                Update the StringNumber string with String.

  @retval EFI_SUCCESS           SmbiosHandle had its StringNumber String updated.
  @retval EFI_INVALID_PARAMETER SmbiosHandle does not exist.
  @retval EFI_UNSUPPORTED       String was not added because it is longer than the SMBIOS Table supports.
  @retval EFI_NOT_FOUND         The StringNumber.is not valid for this SMBIOS record.

**/
EFI_STATUS
EFIAPI
SmbiosUpdateString (
  IN CONST EFI_SMBIOS_PROTOCOL      *This,
  IN EFI_SMBIOS_HANDLE              *SmbiosHandle,
  IN UINTN                          *StringNumber,
  IN CHAR8                          *String
  )
{
  UINTN                     InputStrLen;
  UINTN                     TargetStrLen;
  UINTN                     StrIndex;
  UINTN                     TargetStrOffset;
  UINTN                     NewEntrySize;
  CHAR8                     *StrStart;
  VOID                      *Raw;
  LIST_ENTRY                *Link;
  LIST_ENTRY                *Head;
  EFI_STATUS                Status;
  SMBIOS_INSTANCE           *Private;
  EFI_SMBIOS_ENTRY          *SmbiosEntry;
  EFI_SMBIOS_ENTRY          *ResizedSmbiosEntry;
  EFI_SMBIOS_HANDLE         MaxSmbiosHandle;
  EFI_SMBIOS_TABLE_HEADER   *Record;
  EFI_SMBIOS_RECORD_HEADER  *InternalRecord;

  //
  // Check args validity
  //
  GetMaxSmbiosHandle(This, &MaxSmbiosHandle);

  if (*SmbiosHandle > MaxSmbiosHandle) {
    return EFI_INVALID_PARAMETER;
  }

  if (String == NULL) {
    return EFI_ABORTED;
  }

  if (*StringNumber == 0) {
    return EFI_NOT_FOUND;
  }

  InputStrLen = AsciiStrLen(String);

  if (This->MajorVersion < 2 || (This->MajorVersion == 2 && This->MinorVersion < 7)) {
    if (InputStrLen > SMBIOS_STRING_MAX_LENGTH) {
      return EFI_UNSUPPORTED;
    }
  } else if (This->MajorVersion < 3) {
    //
    // Reference SMBIOS 2.7, chapter 6.1.3, it will have no limit on the length of each individual text string.
    // However, the length of the entire structure table (including all strings) must be reported
    // in the Structure Table Length field of the SMBIOS Structure Table Entry Point,
    // which is a WORD field limited to 65,535 bytes.
    //
    if (InputStrLen > SMBIOS_TABLE_MAX_LENGTH) {
      return EFI_UNSUPPORTED;
    }
  } else {
    if (InputStrLen > SMBIOS_3_0_TABLE_MAX_LENGTH) {
      //
      // SMBIOS 3.0 defines the Structure table maximum size as DWORD field limited to 0xFFFFFFFF bytes.
      // The input string length should not exceed 0xFFFFFFFF bytes.
      //
      return EFI_UNSUPPORTED;
    }
  }

  Private = SMBIOS_INSTANCE_FROM_THIS (This);
  //
  // Enter into critical section
  //
  Status = EfiAcquireLockOrFail (&Private->DataLock);
  if (EFI_ERROR (Status)) {
    return Status;
  }

  Head = &Private->DataListHead;
  for (Link = Head->ForwardLink; Link != Head; Link = Link->ForwardLink) {
    SmbiosEntry = SMBIOS_ENTRY_FROM_LINK(Link);
    Record = (EFI_SMBIOS_TABLE_HEADER*)(SmbiosEntry->RecordHeader + 1);

    if (Record->Handle == *SmbiosHandle) {
      //
      // Find out the specified SMBIOS record
      //
      if (*StringNumber > SmbiosEntry->RecordHeader->NumberOfStrings) {
        EfiReleaseLock (&Private->DataLock);
        return EFI_NOT_FOUND;
      }
      //
      // Point to unformed string section
      //
      StrStart = (CHAR8 *) Record + Record->Length;

      for (StrIndex = 1, TargetStrOffset = 0; StrIndex < *StringNumber; StrStart++, TargetStrOffset++) {
        //
        // A string ends in 00h
        //
        if (*StrStart == 0) {
          StrIndex++;
        }

        //
        // String section ends in double-null (0000h)
        //
        if (*StrStart == 0 && *(StrStart + 1) == 0) {
          EfiReleaseLock (&Private->DataLock);
          return EFI_NOT_FOUND;
        }
      }

      if (*StrStart == 0) {
        StrStart++;
        TargetStrOffset++;
      }

      //
      // Now we get the string target
      //
      TargetStrLen = AsciiStrLen(StrStart);
      if (InputStrLen == TargetStrLen) {
        AsciiStrCpyS(StrStart, TargetStrLen + 1, String);
        //
        // Some UEFI drivers (such as network) need some information in SMBIOS table.
        // Here we create SMBIOS table and publish it in
        // configuration table, so other UEFI drivers can get SMBIOS table from
        // configuration table without depending on PI SMBIOS protocol.
        //
        SmbiosTableConstruction (SmbiosEntry->Smbios32BitTable, SmbiosEntry->Smbios64BitTable);
        EfiReleaseLock (&Private->DataLock);
        return EFI_SUCCESS;
      }

      SmbiosEntry->Smbios32BitTable = FALSE;
      SmbiosEntry->Smbios64BitTable = FALSE;
      if ((This->MajorVersion < 0x3) ||
          ((This->MajorVersion >= 0x3) && ((PcdGet32 (PcdSmbiosEntryPointProvideMethod) & BIT0) == BIT0))) {
        //
        // 32-bit table is produced, check the valid length.
        //
        if ((EntryPointStructure != NULL) &&
            (EntryPointStructure->TableLength + InputStrLen - TargetStrLen > SMBIOS_TABLE_MAX_LENGTH)) {
          //
          // The length of the entire structure table (including all strings) must be reported
          // in the Structure Table Length field of the SMBIOS Structure Table Entry Point,
          // which is a WORD field limited to 65,535 bytes.
          //
          DEBUG ((EFI_D_INFO, "SmbiosUpdateString: Total length exceeds max 32-bit table length\n"));
        } else {
          DEBUG ((EFI_D_INFO, "SmbiosUpdateString: New smbios record add to 32-bit table\n"));
          SmbiosEntry->Smbios32BitTable = TRUE;
        }
      }

      if ((This->MajorVersion >= 0x3) && ((PcdGet32 (PcdSmbiosEntryPointProvideMethod) & BIT1) == BIT1)) {
        //
        // 64-bit table is produced, check the valid length.
        //
        if ((Smbios30EntryPointStructure != NULL) &&
            (Smbios30EntryPointStructure->TableMaximumSize + InputStrLen - TargetStrLen > SMBIOS_3_0_TABLE_MAX_LENGTH)) {
          DEBUG ((EFI_D_INFO, "SmbiosUpdateString: Total length exceeds max 64-bit table length\n"));
        } else {
          DEBUG ((EFI_D_INFO, "SmbiosUpdateString: New smbios record add to 64-bit table\n"));
          SmbiosEntry->Smbios64BitTable = TRUE;
        }
      }

      if ((!SmbiosEntry->Smbios32BitTable) && (!SmbiosEntry->Smbios64BitTable)) {
        EfiReleaseLock (&Private->DataLock);
        return EFI_UNSUPPORTED;
      }

      //
      // Original string buffer size is not exactly match input string length.
      // Re-allocate buffer is needed.
      //
      NewEntrySize = SmbiosEntry->RecordSize + InputStrLen - TargetStrLen;
      ResizedSmbiosEntry = AllocateZeroPool (NewEntrySize);

      if (ResizedSmbiosEntry == NULL) {
        EfiReleaseLock (&Private->DataLock);
        return EFI_OUT_OF_RESOURCES;
      }

      InternalRecord  = (EFI_SMBIOS_RECORD_HEADER *) (ResizedSmbiosEntry + 1);
      Raw     = (VOID *) (InternalRecord + 1);

      //
      // Build internal record Header
      //
      InternalRecord->Version     = EFI_SMBIOS_RECORD_HEADER_VERSION;
      InternalRecord->HeaderSize  = (UINT16) sizeof (EFI_SMBIOS_RECORD_HEADER);
      InternalRecord->RecordSize  = SmbiosEntry->RecordHeader->RecordSize + InputStrLen - TargetStrLen;
      InternalRecord->ProducerHandle = SmbiosEntry->RecordHeader->ProducerHandle;
      InternalRecord->NumberOfStrings = SmbiosEntry->RecordHeader->NumberOfStrings;

      //
      // Copy SMBIOS structure and optional strings.
      //
      CopyMem (Raw, SmbiosEntry->RecordHeader + 1, Record->Length + TargetStrOffset);
      CopyMem ((VOID*)((UINTN)Raw + Record->Length + TargetStrOffset), String, InputStrLen + 1);
      CopyMem ((CHAR8*)((UINTN)Raw + Record->Length + TargetStrOffset + InputStrLen + 1),
               (CHAR8*)Record + Record->Length + TargetStrOffset + TargetStrLen + 1,
               SmbiosEntry->RecordHeader->RecordSize - sizeof (EFI_SMBIOS_RECORD_HEADER) - Record->Length - TargetStrOffset - TargetStrLen - 1);

      //
      // Insert new record
      //
      ResizedSmbiosEntry->Signature    = EFI_SMBIOS_ENTRY_SIGNATURE;
      ResizedSmbiosEntry->RecordHeader = InternalRecord;
      ResizedSmbiosEntry->RecordSize   = NewEntrySize;
      ResizedSmbiosEntry->Smbios32BitTable = SmbiosEntry->Smbios32BitTable;
      ResizedSmbiosEntry->Smbios64BitTable = SmbiosEntry->Smbios64BitTable;
      InsertTailList (Link->ForwardLink, &ResizedSmbiosEntry->Link);

      //
      // Remove old record
      //
      RemoveEntryList(Link);
      FreePool(SmbiosEntry);
      //
      // Some UEFI drivers (such as network) need some information in SMBIOS table.
      // Here we create SMBIOS table and publish it in
      // configuration table, so other UEFI drivers can get SMBIOS table from
      // configuration table without depending on PI SMBIOS protocol.
      //
      SmbiosTableConstruction (ResizedSmbiosEntry->Smbios32BitTable, ResizedSmbiosEntry->Smbios64BitTable);
      EfiReleaseLock (&Private->DataLock);
      return EFI_SUCCESS;
    }
  }

  EfiReleaseLock (&Private->DataLock);
  return EFI_INVALID_PARAMETER;
}
Beispiel #11
0
/**
  Add an SMBIOS record.

  @param  This                  The EFI_SMBIOS_PROTOCOL instance.
  @param  ProducerHandle        The handle of the controller or driver associated with the SMBIOS information. NULL
                                means no handle.
  @param  SmbiosHandle          On entry, the handle of the SMBIOS record to add. If FFFEh, then a unique handle
                                will be assigned to the SMBIOS record. If the SMBIOS handle is already in use,
                                EFI_ALREADY_STARTED is returned and the SMBIOS record is not updated.
  @param  Record                The data for the fixed portion of the SMBIOS record. The format of the record is
                                determined by EFI_SMBIOS_TABLE_HEADER.Type. The size of the formatted area is defined
                                by EFI_SMBIOS_TABLE_HEADER.Length and either followed by a double-null (0x0000) or
                                a set of null terminated strings and a null.

  @retval EFI_SUCCESS           Record was added.
  @retval EFI_OUT_OF_RESOURCES  Record was not added due to lack of system resources.
  @retval EFI_ALREADY_STARTED   The SmbiosHandle passed in was already in use.

**/
EFI_STATUS
EFIAPI
SmbiosAdd (
  IN CONST EFI_SMBIOS_PROTOCOL  *This,
  IN EFI_HANDLE                 ProducerHandle, OPTIONAL
  IN OUT EFI_SMBIOS_HANDLE      *SmbiosHandle,
  IN EFI_SMBIOS_TABLE_HEADER    *Record
  )
{
  VOID                        *Raw;
  UINTN                       TotalSize;
  UINTN                       RecordSize;
  UINTN                       StructureSize;
  UINTN                       NumberOfStrings;
  EFI_STATUS                  Status;
  LIST_ENTRY                  *Head;
  SMBIOS_INSTANCE             *Private;
  EFI_SMBIOS_ENTRY            *SmbiosEntry;
  EFI_SMBIOS_HANDLE           MaxSmbiosHandle;
  SMBIOS_HANDLE_ENTRY         *HandleEntry;
  EFI_SMBIOS_RECORD_HEADER    *InternalRecord;
  BOOLEAN                     Smbios32BitTable;
  BOOLEAN                     Smbios64BitTable;

  if (SmbiosHandle == NULL) {
    return EFI_INVALID_PARAMETER;
  }

  Private = SMBIOS_INSTANCE_FROM_THIS (This);
  //
  // Check whether SmbiosHandle is already in use
  //
  Head = &Private->AllocatedHandleListHead;
  if (*SmbiosHandle != SMBIOS_HANDLE_PI_RESERVED && CheckSmbiosHandleExistance(Head, *SmbiosHandle)) {
    return EFI_ALREADY_STARTED;
  }

  //
  // when SmbiosHandle is 0xFFFE, an available handle will be assigned
  //
  if (*SmbiosHandle == SMBIOS_HANDLE_PI_RESERVED) {
    Status = GetAvailableSmbiosHandle(This, SmbiosHandle);
    if (EFI_ERROR(Status)) {
      return Status;
    }
  } else {
    //
    // Check this handle validity
    //
    GetMaxSmbiosHandle(This, &MaxSmbiosHandle);
    if (*SmbiosHandle > MaxSmbiosHandle) {
      return EFI_INVALID_PARAMETER;
    }
  }

  //
  // Calculate record size and string number
  //
  Status = GetSmbiosStructureSize(This, Record, &StructureSize, &NumberOfStrings);
  if (EFI_ERROR(Status)) {
    return Status;
  }

  Smbios32BitTable = FALSE;
  Smbios64BitTable = FALSE;
  if ((This->MajorVersion < 0x3) ||
      ((This->MajorVersion >= 0x3) && ((PcdGet32 (PcdSmbiosEntryPointProvideMethod) & BIT0) == BIT0))) {
    //
    // For SMBIOS 32-bit table, the length of the entire structure table (including all strings) must be reported
    // in the Structure Table Length field of the SMBIOS Structure Table Entry Point,
    // which is a WORD field limited to 65,535 bytes. So the max size of 32-bit table should not exceed 65,535 bytes.
    //
    if ((EntryPointStructure != NULL) &&
        (EntryPointStructure->TableLength + StructureSize > SMBIOS_TABLE_MAX_LENGTH)) {
      DEBUG ((EFI_D_INFO, "SmbiosAdd: Total length exceeds max 32-bit table length with type = %d size = 0x%x\n", Record->Type, StructureSize));
    } else {
      Smbios32BitTable = TRUE;
      DEBUG ((EFI_D_INFO, "SmbiosAdd: Smbios type %d with size 0x%x is added to 32-bit table\n", Record->Type, StructureSize));
    }
  }

  //
  // For SMBIOS 3.0, Structure table maximum size in Entry Point structure is DWORD field limited to 0xFFFFFFFF bytes.
  //
  if ((This->MajorVersion >= 0x3) && ((PcdGet32 (PcdSmbiosEntryPointProvideMethod) & BIT1) == BIT1)) {
    //
    // For SMBIOS 64-bit table, Structure table maximum size in SMBIOS 3.0 (64-bit) Entry Point
    // is a DWORD field limited to 0xFFFFFFFF bytes. So the max size of 64-bit table should not exceed 0xFFFFFFFF bytes.
    //
    if ((Smbios30EntryPointStructure != NULL) &&
        (Smbios30EntryPointStructure->TableMaximumSize + StructureSize > SMBIOS_3_0_TABLE_MAX_LENGTH)) {
      DEBUG ((EFI_D_INFO, "SmbiosAdd: Total length exceeds max 64-bit table length with type = %d size = 0x%x\n", Record->Type, StructureSize));
    } else {
      DEBUG ((EFI_D_INFO, "SmbiosAdd: Smbios type %d with size 0x%x is added to 64-bit table\n", Record->Type, StructureSize));
      Smbios64BitTable = TRUE;
    }
  }

  if ((!Smbios32BitTable) && (!Smbios64BitTable)) {
    //
    // If both 32-bit and 64-bit table are not updated, quit
    //
    return EFI_OUT_OF_RESOURCES;
  }

  //
  // Enter into critical section
  //
  Status = EfiAcquireLockOrFail (&Private->DataLock);
  if (EFI_ERROR (Status)) {
    return Status;
  }

  RecordSize  = sizeof (EFI_SMBIOS_RECORD_HEADER) + StructureSize;
  TotalSize   = sizeof (EFI_SMBIOS_ENTRY) + RecordSize;

  //
  // Allocate internal buffer
  //
  SmbiosEntry = AllocateZeroPool (TotalSize);
  if (SmbiosEntry == NULL) {
    EfiReleaseLock (&Private->DataLock);
    return EFI_OUT_OF_RESOURCES;
  }
  HandleEntry = AllocateZeroPool (sizeof(SMBIOS_HANDLE_ENTRY));
  if (HandleEntry == NULL) {
    EfiReleaseLock (&Private->DataLock);
    return EFI_OUT_OF_RESOURCES;
  }

  //
  // Build Handle Entry and insert into linked list
  //
  HandleEntry->Signature     = SMBIOS_HANDLE_ENTRY_SIGNATURE;
  HandleEntry->SmbiosHandle  = *SmbiosHandle;
  InsertTailList(&Private->AllocatedHandleListHead, &HandleEntry->Link);

  InternalRecord  = (EFI_SMBIOS_RECORD_HEADER *) (SmbiosEntry + 1);
  Raw     = (VOID *) (InternalRecord + 1);

  //
  // Build internal record Header
  //
  InternalRecord->Version     = EFI_SMBIOS_RECORD_HEADER_VERSION;
  InternalRecord->HeaderSize  = (UINT16) sizeof (EFI_SMBIOS_RECORD_HEADER);
  InternalRecord->RecordSize  = RecordSize;
  InternalRecord->ProducerHandle = ProducerHandle;
  InternalRecord->NumberOfStrings = NumberOfStrings;
  //
  // Insert record into the internal linked list
  //
  SmbiosEntry->Signature    = EFI_SMBIOS_ENTRY_SIGNATURE;
  SmbiosEntry->RecordHeader = InternalRecord;
  SmbiosEntry->RecordSize   = TotalSize;
  SmbiosEntry->Smbios32BitTable = Smbios32BitTable;
  SmbiosEntry->Smbios64BitTable = Smbios64BitTable;
  InsertTailList (&Private->DataListHead, &SmbiosEntry->Link);

  CopyMem (Raw, Record, StructureSize);
  ((EFI_SMBIOS_TABLE_HEADER*)Raw)->Handle = *SmbiosHandle;

  //
  // Some UEFI drivers (such as network) need some information in SMBIOS table.
  // Here we create SMBIOS table and publish it in
  // configuration table, so other UEFI drivers can get SMBIOS table from
  // configuration table without depending on PI SMBIOS protocol.
  //
  SmbiosTableConstruction (Smbios32BitTable, Smbios64BitTable);

  //
  // Leave critical section
  //
  EfiReleaseLock (&Private->DataLock);
  return EFI_SUCCESS;
}
Beispiel #12
0
Arguments:

  (See Tiano Runtime Specification)

Returns:

  None

--*/
{
  EFI_STATUS  Status;

  //
  // Acquire the lock required to update mStatusCodeFlag
  //
  Status = EfiAcquireLockOrFail (&mStatusCodeLock);
  if (EFI_ERROR (Status)) {
    //
    // Check for reentrancy of the lock
    //
    return EFI_DEVICE_ERROR;
  }
  //
  // Check to see if we are already in the middle of a ReportStatusCode()
  //
  if (mStatusCodeFlag) {
    EfiReleaseLock (&mStatusCodeLock);
    return EFI_DEVICE_ERROR;
  }
  //
  // Set the flag to show we are in the middle of a ReportStatusCode()