[U-Boot-Users] serial does not work

[刘勇]

   my card use powerpc 440gx, i use u-boot OCOTEA board.
when i arrive the prompt "=>", i can input no char.
at last i find that cpu always loops in the function of 
serial_getc() whatever i press any button. i have no error.
cpu-->ppc4xx-->serial.c
	status = in8 (ACTING_UART0_BASE + UART_LSR);
		if ((status & asyncLSRDataReady1) != 0x0) {
			break;
		}
    the result of (status & asyncLSRDataReady1) always is zero.
    i do not know why.