FCR
val = CSR_READ_1(l, FCR);
CSR_WRITE_1(l, FCR, val | FCR_FLCE);
OUTP(FCR, 0x00); /* no FIFO mode */
lbc_write_4(sc->sc_obio, FCR, __SHIFTIN(command, FCR_CMD0));
lbc_write_4(sc->sc_obio, FCR, len);
lbc_write_4(sc->sc_obio, FCR, len);
UART_WRITE(base, FCR, 0x00);
UART_WRITE(base, FCR, 0x07); /* FIFO on, TXRX FIFO reset */