Serial Console on XServe and yaboot???

Bill Fink billfink at
Sat Mar 15 03:27:46 EST 2003

Hi Ethan,

On Thu, 13 Mar 2003, Ethan Benson wrote:

> On Thu, Mar 13, 2003 at 10:29:01PM -0500, Bill Fink wrote:
> >
> > Thanks a bunch for the info!  Using this method, with scca instead
> > of ttya, and a baud rate of 57600 (using a laptop), I was able to
> > verify this basically works.  The initial menu that asks you what
> > you want to boot (Linux, MacOS 9, MacOS X, etc) still goes to the
> > screen (at least it does if you have a screen attached) but the
> yes this is because i had to write all my text directly to the
> framebuffer, apple takes all kinds of special efforts to prevent
> `archaic peecee text' from showing up on the screen...  this problem
> should be fixed in yaboot 2.0
> i don't consider it too serious right now since if your doing serial
> console your probably not running any macos.
> you could probably fix this easily enough for your setup by altering
> the `.printf' definition in ofboot.

It's not a big deal since I only want to run Linux at the moment.

> > yaboot menu where you select the Linux kernel to boot does show
> > up on the serial port of the XServe, and this is what I'm most
> > interested in.  Now if I can just figure out how to set the baud
> > rate of the serial console for OF to 38400 or less to make my
> > console server happy, I'd be in business.  If nothing else I can
> > use the laptop approach which is at least a lot easier than toting
> > a big monitor around.
> hmm, not sure on that one.

I figured it out.  I just set the OpenFirmware parameters input-device
and output-device to scca:38400 and it worked fine (except it put my
window into reverse video mode for some reason).

						-Thanks again


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