dxemain.c

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EFI_STATUS
EFIAPI
CoreEfiNotAvailableYetArg2 (
  UINTN Arg1,
  UINTN Arg2
  )
/*++

Routine Description:

  Place holder function until all the Boot Services and Runtime Services are available

Arguments:

  Arg1        - Undefined
  
  Arg2        - Undefined

Returns:

  EFI_NOT_AVAILABLE_YET

--*/
{
  //
  // This function should never be executed.  If it does, then the architectural protocols
  // have not been designed correctly.  The EFI_BREAKPOINT() is commented out for now until the
  // DXE Core and all the Architectural Protocols are complete.
  //

  return EFI_NOT_AVAILABLE_YET;
}

EFI_STATUS
EFIAPI
CoreEfiNotAvailableYetArg3 (
  UINTN Arg1,
  UINTN Arg2,
  UINTN Arg3
  )
/*++

Routine Description:

  Place holder function until all the Boot Services and Runtime Services are available

Arguments:

  Arg1        - Undefined
  
  Arg2        - Undefined
  
  Arg3        - Undefined

Returns:

  EFI_NOT_AVAILABLE_YET

--*/
{
  //
  // This function should never be executed.  If it does, then the architectural protocols
  // have not been designed correctly.  The EFI_BREAKPOINT() is commented out for now until the
  // DXE Core and all the Architectural Protocols are complete.
  //

  return EFI_NOT_AVAILABLE_YET;
}

EFI_STATUS
EFIAPI
CoreEfiNotAvailableYetArg4 (
  UINTN Arg1,
  UINTN Arg2,
  UINTN Arg3,
  UINTN Arg4
  )
/*++

Routine Description:

  Place holder function until all the Boot Services and Runtime Services are available

Arguments:

  Arg1        - Undefined
  
  Arg2        - Undefined
  
  Arg3        - Undefined
  
  Arg4        - Undefined

Returns:

  EFI_NOT_AVAILABLE_YET

--*/
{
  //
  // This function should never be executed.  If it does, then the architectural protocols
  // have not been designed correctly.  The EFI_BREAKPOINT() is commented out for now until the
  // DXE Core and all the Architectural Protocols are complete.
  //

  return EFI_NOT_AVAILABLE_YET;
}

EFI_STATUS
EFIAPI
CoreEfiNotAvailableYetArg5 (
  UINTN Arg1,
  UINTN Arg2,
  UINTN Arg3,
  UINTN Arg4,
  UINTN Arg5
  )
/*++

Routine Description:

  Place holder function until all the Boot Services and Runtime Services are available

Arguments:

  Arg1        - Undefined
  
  Arg2        - Undefined
  
  Arg3        - Undefined
  
  Arg4        - Undefined
  
  Arg5        - Undefined

Returns:

  EFI_NOT_AVAILABLE_YET

--*/
{
  //
  // This function should never be executed.  If it does, then the architectural protocols
  // have not been designed correctly.  The EFI_BREAKPOINT() is commented out for now until the
  // DXE Core and all the Architectural Protocols are complete.
  //

  return EFI_NOT_AVAILABLE_YET;
}


EFI_STATUS
CoreGetPeiProtocol (
  IN EFI_GUID  *ProtocolGuid,
  IN VOID      **Interface
  )
/*++

Routine Description:

  Searches for a Protocol Interface passed from PEI through a HOB

Arguments:

  ProtocolGuid - The Protocol GUID to search for in the HOB List

  Interface    - A pointer to the interface for the Protocol GUID

Returns:

  EFI_SUCCESS   - The Protocol GUID was found and its interface is returned in Interface

  EFI_NOT_FOUND - The Protocol GUID was not found in the HOB List

--*/
{
  EFI_STATUS  Status;
  VOID        *HobList;
  VOID        *Buffer;          

  HobList = mHobStart;
  Status = GetNextGuidHob (&HobList, ProtocolGuid, &Buffer, NULL);
  if (EFI_ERROR (Status)) {
    return Status;
  }

  ASSERT (Buffer != NULL);

  *Interface = (VOID *)(*(UINTN *)(Buffer));

  return Status;
}


VOID
CalculateEfiHdrCrc (
  IN  OUT EFI_TABLE_HEADER    *Hdr
  )
/*++

Routine Description:

  Calcualte the 32-bit CRC in a EFI table using the service provided by the
  gRuntime service.

Arguments:

  Hdr  - Pointer to an EFI standard header

Returns:

  None

--*/
{
  UINT32 Crc;

  Hdr->CRC32 = 0;
  
  //
  // If gBS->CalculateCrce32 () == CoreEfiNotAvailableYet () then
  //  Crc will come back as zero if we set it to zero here
  //
  Crc = 0;
  gBS->CalculateCrc32 ((UINT8 *)Hdr, Hdr->HeaderSize, &Crc);
  Hdr->CRC32 = Crc; 
}


EFI_BOOTSERVICE
EFI_STATUS
EFIAPI
CoreExitBootServices (
  IN EFI_HANDLE   ImageHandle,
  IN UINTN        MapKey
  )
/*++

Routine Description:

  Terminates all boot services.

Arguments:

  ImageHandle   - Handle that identifies the exiting image.
  MapKey        - Key to the latest memory map.

Returns:

  EFI_SUCCESS           - Boot services have been terminated.
  EFI_INVALID_PARAMETER - MapKey is incorrect.

--*/
{
  EFI_STATUS    Status;

  //
  // Terminate memory services if the MapKey matches
  //
  Status = CoreTerminateMemoryMap (MapKey);
  if (EFI_ERROR (Status)) {
    return Status;
  }

  //
  // Notify other drivers that we are exiting boot services.
  //
  CoreNotifySignalList (&gEfiEventExitBootServicesGuid);

  //
  // Disable Timer
  //
  gTimer->SetTimerPeriod (gTimer, 0);

  //
  // Disable CPU Interrupts
  //
  gCpu->DisableInterrupt (gCpu);

  //
  // Report that ExitBootServices() has been called
  //
  // We are using gEfiDxeServicesTableGuid as the caller ID for Dxe Core
  //
  CoreReportProgressCode ((EFI_SOFTWARE_EFI_BOOT_SERVICE | EFI_SW_BS_PC_EXIT_BOOT_SERVICES));

  //
  // Clear the non-runtime values of the EFI System Table
  //
  gST->BootServices        = NULL;
  gST->ConIn               = NULL;
  gST->ConsoleInHandle     = NULL;
  gST->ConOut              = NULL;
  gST->ConsoleOutHandle    = NULL;
  gST->StdErr              = NULL;
  gST->StandardErrorHandle = NULL;

  //
  // Recompute the 32-bit CRC of the EFI System Table
  //
  CalculateEfiHdrCrc (&gST->Hdr);

  //
  // Zero out the Boot Service Table
  //
  EfiCommonLibSetMem (gBS, sizeof (EFI_BOOT_SERVICES), 0);
  gBS = NULL;
  
  //
  // Update the AtRuntime field in Runtiem AP.
  //
  gRuntime->AtRuntime = TRUE;
  
  return Status;
}