Re: [U-Boot-Users] serial does not work

31 Aug 2004


      On Tue, 2004-08-31 at 05:31, 刘勇 wrote:
...
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.
What communications settings are you using?  Ensure flow control is set
to NONE.
Please read the DULG.
Stock 'out-of-the-box' u-boot on the ocotea should be:
    115200,None,8,1, No flow control
-travis

Re: [U-Boot-Users] serial does not work

Travis Sawyer