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Date:      Wed, 30 Mar 2005 13:48:43 +0200
From:      Emanuel Strobl <emanuel.strobl@gmx.net>
To:        freebsd-questions@freebsd.org
Cc:        John Pettitt <jpp@cloudview.com>
Subject:   Re: How do I kill the console? (or how to make nullconsole work)
Message-ID:  <200503301348.53238@harrymail>
In-Reply-To: <424A5247.1050401@cloudview.com>
References:  <424A5247.1050401@cloudview.com>

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Am Mittwoch, 30. M=E4rz 2005 09:16 schrieb John Pettitt:
> I'm running 5.4 BETA1 on a soekris 4801 board.  The unit emulates a
> console on a serial port.  I want to use the serial port for my GPS so I
> want the console messages from BSD to go away - an in particular I want
> BSD to ignore inbound data during the boot process.
>
> So far:
>
> I've used the regular mbr so that I don't get the disk prompt
> I've added "boot" to loader.rc before the beastie call so that it
> doesn't display the menu
>
> Both these change work
>
> However if I add boot.config with -n -m the system doesn't boot (and I
> can't tell why because I have no messages!)
> If I set console=3D"nullconsole" the system doesn't boot and again I can't
> see why.
>
> Does anybody have any wisdom on how to get nullconsole to work?

Unfortunately not, but if you defined nullconsole I think no /boot.config i=
s=20
allowed.

I'd suggest you try to set hints.sio.1.flags=3D"0x10" and make sure=20
hints.sio.0.flags doesn't exist. This should make the second (not DB-9=20
connected) serial ports of the 4801 systemconsole.
Alternatively you can try setting boot_serial=3D"sio1" in /boot/loader.conf=
, but=20
I never tried that.
Make sure in any case you also have "console=3Dcomconsole" in /boot/loader.=
conf
since the soekris bios emulates a simple "VGA"-Console.

You can also recompile the loader to tell it what sio (and at what speed) i=
t=20
should use.
The following in /etc/make.conf does the trick:
BOOT_COMCONSOLE_PORT=3D   0x2F8
BOOT_COMCONSOLE_SPEED=3D  115200

=46or the loader to recompile goto /usr/src/sys/boot and do:
make clean && make depend && make && make install

Good luck,

=2DHarry

>
> John
>
>
>
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> http://lists.freebsd.org/mailman/listinfo/freebsd-questions
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