MdeModulePkg/RuntimeDxe: clear mVirtualMapMaxIndex

[mirror_edk2.git] / MdeModulePkg / Core / RuntimeDxe / Crc32.c

/** @file\r
  This file implements CalculateCrc32 Boot Services as defined in\r
  Platform Initialization specification 1.0 VOLUME 2 DXE Core Interface.\r
\r
  This Boot Services is in the Runtime Driver because this service is\r
  also required by SetVirtualAddressMap() when the EFI System Table and\r
  EFI Runtime Services Table are converted from physical address to\r
  virtual addresses.  This requires that the 32-bit CRC be recomputed.\r
\r
Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>\r
SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include <Uefi.h>\r
#include <Library/BaseLib.h>\r
\r
/**\r
  Calculate CRC32 for target data.\r
\r
  @param  Data                  The target data.\r
  @param  DataSize              The target data size.\r
  @param  CrcOut                The CRC32 for target data.\r
\r
  @retval EFI_SUCCESS           The CRC32 for target data is calculated successfully.\r
  @retval EFI_INVALID_PARAMETER Some parameter is not valid, so the CRC32 is not\r
                                calculated.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
RuntimeDriverCalculateCrc32 (\r
  IN  VOID    *Data,\r
  IN  UINTN   DataSize,\r
  OUT UINT32  *CrcOut\r
  )\r
{\r
  if ((Data == NULL) || (DataSize == 0) || (CrcOut == NULL)) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  *CrcOut = CalculateCrc32 (Data, DataSize);\r
  return EFI_SUCCESS;\r
}\r