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60d18d3fe9
Add an implementation of the CRC8 algorithm. This is required by the TPM emulation, but is probably useful to U-Boot in general. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Simon Glass <sjg@chromium.org>
24 lines
492 B
C
24 lines
492 B
C
/*
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* Copyright (c) 2013 Google, Inc
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __linux_crc8_h
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#define __linux_crc8_h
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/**
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* crc8() - Calculate and return CRC-8 of the data
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*
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* This uses an x^8 + x^2 + x + 1 polynomial. A table-based algorithm would
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* be faster, but for only a few bytes it isn't worth the code size
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*
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* @vptr: Buffer to checksum
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* @len: Length of buffer in bytes
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* @return CRC8 checksum
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*/
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unsigned int crc8(const unsigned char *vptr, int len);
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#endif
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