diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/crc.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/crc.h b/include/crc.h index 85d389e506..04ddfed0c9 100644 --- a/include/crc.h +++ b/include/crc.h @@ -11,6 +11,9 @@ #if defined(CONFIG_HW_CRC) && !defined(HOST_TOOLS_BUILD) #include "crc_hw.h" #else +#ifdef CONFIG_ZEPHYR +#include <stdint.h> +#endif /* CONFIG_ZEPHYR */ /* Use software implementation */ @@ -53,6 +56,17 @@ void crc32_ctx_hash8(uint32_t *ctx, uint8_t val); uint32_t crc32_ctx_result(uint32_t *ctx); +/** + * Return CRC-16 of the data using X^16 + X^15 + X^2 + 1 polynomial, based + * upon pre-calculated partial CRC of previous data. + * @param data uint8_t *, input, a pointer to input data + * @param len int, input, size of input data in bytes + * @param previous_crc uint16_t, input, pre-calculated CRC of previous data. + * Seed with zero for a new calculation. + * @return the crc-16 of the input data. + */ +uint16_t cros_crc16(const uint8_t *data, int len, uint16_t previous_crc); + #endif /* CONFIG_HW_CRC && !HOST_TOOLS_BUILD */ #endif /* __CROS_EC_CRC_H */ |