RTK_MAR4
CSR_WRITE_4(sc, RTK_MAR4, 0xFFFFFFFF);
CSR_WRITE_4(sc, RTK_MAR4, 0);
CSR_WRITE_4(sc, RTK_MAR4, bswap32(hashes[0]));
CSR_WRITE_4(sc, RTK_MAR4, hashes[1]);