diff options
Diffstat (limited to 'include/u-boot/crc.h')
| -rw-r--r-- | include/u-boot/crc.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/include/u-boot/crc.h b/include/u-boot/crc.h index 788ef29a17..b42bcda2b3 100644 --- a/include/u-boot/crc.h +++ b/include/u-boot/crc.h @@ -8,7 +8,19 @@ #ifndef _UBOOT_CRC_H #define _UBOOT_CRC_H -/* lib/crc8.c */ +/** + * 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) */ |