1 /* SPDX-License-Identifier: GPL-2.0+ */
4 * Marvell Semiconductor <www.marvell.com>
5 * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
12 * crc8() - Calculate and return CRC-8 of the data
14 * This uses an x^8 + x^2 + x + 1 polynomial. A table-based algorithm would
15 * be faster, but for only a few bytes it isn't worth the code size
19 * @crc_start: CRC8 start value
20 * @vptr: Buffer to checksum
21 * @len: Length of buffer in bytes
22 * @return CRC8 checksum
24 unsigned int crc8(unsigned int crc_start, const unsigned char *vptr, int len);
26 /* lib/crc16.c - 16 bit CRC with polynomial x^16+x^12+x^5+1 (CRC-CCITT) */
27 uint16_t crc16_ccitt(uint16_t crc_start, const unsigned char *s, int len);
29 * crc16_ccitt_wd_buf - Perform CRC16-CCIT on an input buffer and return the
30 * 16-bit result (network byte-order) in an output buffer
33 * @len: input buffer length
34 * @out: output buffer (at least 2 bytes)
37 void crc16_ccitt_wd_buf(const uint8_t *in, uint len,
38 uint8_t *out, uint chunk_sz);
41 uint32_t crc32 (uint32_t, const unsigned char *, uint);
42 uint32_t crc32_wd (uint32_t, const unsigned char *, uint, uint);
43 uint32_t crc32_no_comp (uint32_t, const unsigned char *, uint);
46 * crc32_wd_buf - Perform CRC32 on a buffer and return result in buffer
48 * @input: Input buffer
49 * @ilen: Input buffer length
50 * @output: Place to put checksum result (4 bytes)
51 * @chunk_sz: Trigger watchdog after processing this many bytes
53 void crc32_wd_buf(const unsigned char *input, uint ilen,
54 unsigned char *output, uint chunk_sz);
57 void crc32c_init(uint32_t *, uint32_t);
58 uint32_t crc32c_cal(uint32_t, const char *, int, uint32_t *);
60 #endif /* _UBOOT_CRC_H */