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