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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2013 Google, Inc
*/
#ifdef USE_HOSTCC
#include <arpa/inet.h>
#endif
#include <asm/sections.h>
#include <u-boot/crc.h>
#define POLY (0x1070U << 3)
__rcode 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);
}
__rcode 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;
}
void crc8_wd_buf(const unsigned char *input, unsigned int len,
unsigned char output[1], unsigned int chunk_sz)
{
*output = crc8(0, input, len);
}
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