u-boot/lib/crc8.c
Tom Rini 467382ca03 lib: Remove <common.h> inclusion from these files
After some header file cleanups to add missing include files, remove
common.h from all files in the lib directory. This primarily means just
dropping the line but in a few cases we need to add in other header
files now.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@konsulko.com>
2023-12-21 08:54:37 -05:00

35 lines
537 B
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2013 Google, Inc
*/
#ifdef USE_HOSTCC
#include <arpa/inet.h>
#endif
#include <u-boot/crc.h>
#define POLY (0x1070U << 3)
static unsigned char _crc8(unsigned short data)
{
int i;
for (i = 0; i < 8; i++) {
if (data & 0x8000)
data = data ^ POLY;
data = data << 1;
}
return (unsigned char)(data >> 8);
}
unsigned int crc8(unsigned int crc, const unsigned char *vptr, int len)
{
int i;
for (i = 0; i < len; i++)
crc = _crc8((crc ^ vptr[i]) << 8);
return crc;
}