u-boot/include/linux/crc8.h
Simon Glass 60d18d3fe9 Add crc8 routine
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>
2014-01-08 17:20:34 -07:00

24 lines
492 B
C

/*
* Copyright (c) 2013 Google, Inc
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __linux_crc8_h
#define __linux_crc8_h
/**
* crc8() - Calculate and return CRC-8 of the data
*
* This uses an x^8 + x^2 + x + 1 polynomial. A table-based algorithm would
* be faster, but for only a few bytes it isn't worth the code size
*
* @vptr: Buffer to checksum
* @len: Length of buffer in bytes
* @return CRC8 checksum
*/
unsigned int crc8(const unsigned char *vptr, int len);
#endif