Subject: Re: serial console
To: Chris Ross <firstname.lastname@example.org>
From: Jeff Rizzo <email@example.com>
Date: 01/22/2005 08:24:30
Chris Ross wrote:
> On Jan 21, 2005, at 14:52, David Laight wrote:
>> On Fri, Jan 21, 2005 at 11:51:44AM -0700, Co Thai Ngo wrote:
>>> I would like to install NetBSD 2.0 by using a serial console with
>>> boot-com. But I don't
>>> know if there is any way so that I could change the baud rate when
>>> booting the
>>> computer with boot-com without rebuilding the sources. I have to
>>> use the dafault baud
>>> rate 9600 while my computer can run with the baud rate 115200. Any
>>> suggestion and
>>> comment is appreciated.
>> For NetBSD 2.0, you should just use the normal bootxx_ffsv1 (or
>> for the root filesystem type). You can set the baudrate using the
>> -o speed=<baud rate> option to installboot (use -o console=com0 to
>> a serial console).
> David, I think you're misunderstanding his question. He wants to
> the *install* using a serial console. I do this all the time, but I
> must admit,
> mostly on sparc's, where it's much easier.
> Looking at the man page for boot(8), there is of course the consdev
> But, as you note, it simply allows you to specify use of a serial
> console, not
> its baud rate. I myself don't see a way to specify it. Someone more
> with the boot code will have to speak up.
> If it isn't possible, it should be. I presume it wouldn't be too
> hard to add this
> to the bootloader...
> - Chris
I think you're misunderstanding David's answer. You can use installboot
to set the speed of the serial console for the bootblocks on the bootfloppy.
Something like (not tested):
installboot -o console=com0,speed=115200 /dev/fd0a /usr/mdec/bootxx_ffsv1
(this really doesn't belong on current-users; either netbsd-help or
port-i386 would have been more appropriate)