SHA_CR_FIRST
atmel_sha_write(dd, SHA_CR, SHA_CR_FIRST);
atmel_sha_write(dd, SHA_CR, SHA_CR_FIRST);
atmel_sha_write(dd, SHA_CR, SHA_CR_FIRST);
atmel_sha_write(dd, SHA_CR, SHA_CR_FIRST);
atmel_sha_write(dd, SHA_CR, SHA_CR_FIRST);
atmel_sha_write(dd, SHA_CR, SHA_CR_FIRST);