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From: John Baldwin <jhb@freebsd.org>
To: freebsd-embedded@freebsd.org,
 lev@freebsd.org
Subject: Re: Using ttyu2 as Serial console -- how could I specify this to boot
 and loader?
Date: Tue, 3 Sep 2013 14:29:47 -0400
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On Saturday, August 10, 2013 5:40:14 am Lev Serebryakov wrote:
> Hello, Warner.
> You wrote 9 =D0=B0=D0=B2=D0=B3=D1=83=D1=81=D1=82=D0=B0 2013 =D0=B3., 20:2=
7:15:
>=20
> WL> You need to set the flags hint on the com port you want to be the=20
console.
>  For kernel :) And for boot and loader? I found BOOT_COMCONSOLE_PORT build
> option in Handbook (thanks to hiren panchasara to point me this) :)

You can now do this differently without needing to recompile nor change any
hints for the kernel by just putting this in /boot/loader.conf:

console=3D"comconsole vidconsole"
comconsole_port=3D"0x2f8"

This should set a hw.uart.console hint which overrides the old flags on
uartX devices to set the kernel's serial console.  You can change the
speed via 'comconsole_speed=3D115200' or the like as well.

=2D-=20
John Baldwin