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