Re: No ttyS device at I/O port 0xfe004500 for console

Kumar Gala wrote:

On Jun 13, 2006, at 11:48 AM, Alex Zeffertt wrote:

quoted

Hi list,

I'm trying to boot a linux-2.6.11 kernel on a MPC83xx based board.  
Through
some experimentation I have found I need "console=uart,io,0xfe004500"
in the kernel command line in order to get any output over the serial
port.

Half way through initialisation the kernel appears to swap from its 
"early"
8250 serial driver to a "full" 8250 serial driver.  At this point it 
prints
"No ttyS device at I/O port 0xfe004500 for console" and there is no
further output.

Does anyone have any idea what I may be doing wrong?

BTW, here's the output that I do get.

Alex, where did you get this 2.6.11 kernel?  The public tree didn't have 
support for 83xx in 2.6.11.  I'd suggest looking at using something 
newer like 2.6.16 and see if you have the same issue.

- k

Hi Kumar, I got it from Freescale's MPC8323EMDS linux BSP.

As far as I am aware this is the only source which has support for this
board.  (Hopefully they will eventually upstream their changes!)

I'll have a look at 2.6.11 and see whether it is feasable to port
the board support to it.

Thanks,

Alex