diff options
Diffstat (limited to 'lib/crc16.c')
| -rw-r--r-- | lib/crc16.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/lib/crc16.c b/lib/crc16.c index 25bdfd8e72..f46ba727c9 100644 --- a/lib/crc16.c +++ b/lib/crc16.c @@ -22,6 +22,11 @@ *========================================================================== */ +#ifdef USE_HOSTCC +#include <arpa/inet.h> +#else +#include <common.h> +#endif #include <u-boot/crc.h> /* Table of CRC constants - implements x^16+x^12+x^5+1 */ @@ -60,14 +65,20 @@ static const uint16_t crc16_tab[] = { 0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0, }; -uint16_t crc16_ccitt(uint16_t crc_start, unsigned char *buf, int len) +uint16_t crc16_ccitt(uint16_t cksum, const unsigned char *buf, int len) { - int i; - uint16_t cksum; - - cksum = crc_start; - for (i = 0; i < len; i++) + for (int i = 0; i < len; i++) cksum = crc16_tab[((cksum>>8) ^ *buf++) & 0xff] ^ (cksum << 8); return cksum; } + +void crc16_ccitt_wd_buf(const uint8_t *in, uint len, + uint8_t *out, uint chunk_sz) +{ + uint16_t crc; + + crc = crc16_ccitt(0, in, len); + crc = htons(crc); + memcpy(out, &crc, sizeof(crc)); +} |