Crc32.c revision 4fd606d1f5abe38e1f42c38de1d2e895166bd0f4
/** @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 - 2008, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <Uefi.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.
**/
)
{
return EFI_INVALID_PARAMETER;
}
Crc = 0xffffffff;
}
return EFI_SUCCESS;
}
/**
This internal function reverses bits for 32bit data.
@param Value The data to be reversed.
@return Data reversed.
**/
)
{
NewValue = 0;
}
}
return NewValue;
}
/**
Initialize CRC32 table.
**/
)
{
if ((Value & 0x80000000) != 0) {
} else {
}
}
}
}