On Thu, Dec 09, 2021 at 11:58:32AM +0100, Ahmad Fatoum wrote:
> This implementation is a straight copy of the tableless
> implementation inside Linux' lib/crc32.c
>
> Signed-off-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
> ---
> crypto/crc32.c | 12 ++++++++++++
> include/crc.h | 1 +
> 2 files changed, 13 insertions(+)
Applied, thanks
Sascha
>
> diff --git a/crypto/crc32.c b/crypto/crc32.c
> index 232c023adb88..998cbc9de297 100644
> --- a/crypto/crc32.c
> +++ b/crypto/crc32.c
> @@ -187,6 +187,18 @@ STATIC uint32_t crc32_no_comp(uint32_t crc, const void *_buf, unsigned int len)
> return crc;
> }
>
> +STATIC uint32_t crc32_be(uint32_t crc, const void *_buf, unsigned int len)
> +{
> + const unsigned char *buf = _buf;
> + int i;
> + while (len--) {
> + crc ^= *buf++ << 24;
> + for (i = 0; i < 8; i++)
> + crc = (crc << 1) ^ ((crc & 0x80000000) ? 0x04c11db7 : 0);
> + }
> + return crc;
> +}
> +
> STATIC int file_crc(char *filename, ulong start, ulong size, ulong *crc,
> ulong *total)
> {
> diff --git a/include/crc.h b/include/crc.h
> index eb972705c21a..a5204aaabb9c 100644
> --- a/include/crc.h
> +++ b/include/crc.h
> @@ -36,6 +36,7 @@ static inline u16 crc_itu_t_byte(u16 crc, const u8 data)
> #endif
>
> uint32_t crc32(uint32_t, const void *, unsigned int);
> +uint32_t crc32_be(uint32_t, const void *, unsigned int);
> uint32_t crc32_no_comp(uint32_t, const void *, unsigned int);
> int file_crc(char *filename, unsigned long start, unsigned long size,
> unsigned long *crc, unsigned long *total);
> --
> 2.30.2
>
>
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