PINSEL0 = 0x00000005;               /* Enable RxD0 and TxD0                */
  U0LCR = 0x83;                       /* 8 bits, no Parity, 1 Stop bit       */
  U0DLL = 4;                         /* 115200 Baud Rate @ 12MHz VPB Clock    */
  U0FDR = 0x85;
  U0LCR = 0x03;                       /* DLAB = 0                            */
  U0IER = 0x03;                       /* Enable RDA and THRE interrupts      */

    // Setup the baud rate -  calculate the divisor value.
    divisor = configCPU_CLOCK_HZ / configBUS_DIVIDER / (baud * WANTED_CLOCK_SCALING);
    // Setup the divisor.
    U0LCR |= LCR_DLAB;
    U0DLL = (uchar)( divisor );
    U0DLM = (uchar)( divisor >> 8 );
    // Turn on the FIFO's and clear the buffers.
    U0FCR = (FCR_FCRE|FCR_CLEAR_FIFO);
    // Setup transmission format.
    U0LCR = (LCR_NO_PARITY|LCR_1STOP_BIT|LCR_8BIT_CHARS);
....