| /* SPDX-License-Identifier: GPL-2.0+ */ |
| /* |
| * (C) Copyright 2009 |
| * Marvell Semiconductor <www.marvell.com> |
| * Written-by: Prafulla Wadaskar <prafulla@marvell.com> |
| */ |
| |
| #ifndef _UBOOT_CRC_H |
| #define _UBOOT_CRC_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 |
| * |
| * lib/crc8.c |
| * |
| * @crc_start: CRC8 start value |
| * @vptr: Buffer to checksum |
| * @len: Length of buffer in bytes |
| * @return CRC8 checksum |
| */ |
| unsigned int crc8(unsigned int crc_start, const unsigned char *vptr, int len); |
| |
| /* lib/crc16.c - 16 bit CRC with polynomial x^16+x^12+x^5+1 (CRC-CCITT) */ |
| uint16_t crc16_ccitt(uint16_t crc_start, const unsigned char *s, int len); |
| /** |
| * crc16_ccitt_wd_buf - Perform CRC16-CCIT on an input buffer and return the |
| * 16-bit result (network byte-order) in an output buffer |
| * |
| * @in: input buffer |
| * @len: input buffer length |
| * @out: output buffer (at least 2 bytes) |
| * @chunk_sz: ignored |
| */ |
| void crc16_ccitt_wd_buf(const uint8_t *in, uint len, |
| uint8_t *out, uint chunk_sz); |
| |
| /* lib/crc32.c */ |
| uint32_t crc32 (uint32_t, const unsigned char *, uint); |
| uint32_t crc32_wd (uint32_t, const unsigned char *, uint, uint); |
| uint32_t crc32_no_comp (uint32_t, const unsigned char *, uint); |
| |
| /** |
| * crc32_wd_buf - Perform CRC32 on a buffer and return result in buffer |
| * |
| * @input: Input buffer |
| * @ilen: Input buffer length |
| * @output: Place to put checksum result (4 bytes) |
| * @chunk_sz: Trigger watchdog after processing this many bytes |
| */ |
| void crc32_wd_buf(const unsigned char *input, uint ilen, |
| unsigned char *output, uint chunk_sz); |
| |
| /* lib/crc32c.c */ |
| void crc32c_init(uint32_t *, uint32_t); |
| uint32_t crc32c_cal(uint32_t, const char *, int, uint32_t *); |
| |
| #endif /* _UBOOT_CRC_H */ |