atom feed6 messages in org.freebsd.freebsd-questionsRe: seeking advice re: configuring a ...
FromSent OnAttachments
Jim YuillMay 12, 1998 12:30 pm 
Greg LeheyMay 14, 1998 6:44 pm 
Frank MandarinoMay 20, 1998 4:43 pm 
Greg LeheyMay 20, 1998 5:39 pm 
sporkMay 20, 1998 8:22 pm 
Jim YuillMay 21, 1998 9:22 pm 
Subject:Re: seeking advice re: configuring a serial console
From:spork (spo@super-g.com)
Date:May 20, 1998 8:22:19 pm
List:org.freebsd.freebsd-questions

I've heard there's a company working on "graphics adapter" that has a serial port and somehow grabs the keyboard as well. It's supposed to allow for a "real" serial boot, allowing you to go into the bios setup remotely if you need to.

I've also toyed around with a few of the cards in a USR Total Control Hub. Both cards have 486's on them, and allow you to enter bios setup off the serial port when you flip some DIP switches. I guess this is a custom BIOS they had built, but I'm curious why no one sells a BIOS eprom you can plug into a normal motherboard to do the same thing...

Charles

Charles Sprickman spo@super-g.com

---- On Thu, 21 May 1998, Greg Lehey wrote:

On Wed, 20 May 1998 at 19:43:39 -0400, Frank Mandarino wrote:

Greg Lehey writes:

The boot: message itself is an uncertain case. It comes from the bootstrap, technically not part of FreeBSD, though it's supplied with it. The trouble is, when it starts it can't know where to write to until it reads in the commands, so I don't think it's possible to get it to write to the serial console. I suppose it would be possible to rewrite the bootstrap to always use the serial console, but I don't know of anybody who has done it.

I got the boot: prompt to appear on the serial console of my 2.2.6-RELEASE system by:

1) building my kernel with "options COMCONSOLE" to force the serial console, and

2) creating a /boot.config file containing the option "-P", to use the serial console if no keyboard is found,

3) unplugging my keyboard.

The file /usr/src/sys/i386/boot/biosboot/README.serial contains further information.

Thanks for the information, Frank.

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