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Date:      Fri, 22 Feb 2013 01:00:01 +0200
From:      Konstantin Belousov <kostikbel@gmail.com>
To:        "Daniel O'Connor" <doconnor@gsoft.com.au>
Cc:        freebsd-stable@freebsd.org, John Baldwin <jhb@freebsd.org>, Navdeep Parhar <nparhar@gmail.com>
Subject:   Re: IPMI serial console
Message-ID:  <20130221230001.GF2598@kib.kiev.ua>
In-Reply-To: <64293C7A-038A-4EA1-B394-9E80CFCBC14F@gsoft.com.au>
References:  <00CC60B5-A6EB-4A3C-B8AC-1D60014DE442@gsoft.com.au> <201302211049.13863.jhb@freebsd.org> <E44ABF7A-3795-471B-B241-7103ECE2119E@gsoft.com.au> <51269ABD.2040308@gmail.com> <2AF6F8E4-A45E-4D4C-9232-FF09AD4A3641@gsoft.com.au> <5126A3A1.1030208@gmail.com> <64293C7A-038A-4EA1-B394-9E80CFCBC14F@gsoft.com.au>

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On Fri, Feb 22, 2013 at 09:18:51AM +1030, Daniel O'Connor wrote:
>=20
> On 22/02/2013, at 9:15, Navdeep Parhar <nparhar@gmail.com> wrote:
> >> uart0: <16550 or compatible> port 0x3f8-0x3ff irq 4 on acpi0
> >> uart1: <16550 or compatible> port 0x2f8-0x2ff irq 3 on acpi0
> >> uart2: <16550 or compatible> port 0x3e8-0x3ef irq 5 flags 0x30 on acpi0
> >>=20
> >> The loader talks on the serial console fine, it's the kernel that does=
n't use it which is the problem.

It might be not the serial port, to which the loader talks. The supermicro
boards I dealt with, have a feature of VGA text mode redirection to the
serial port. This is how bios redirection usually works.

You could look at some bios knob which controls the point where the
said redirection is stopped. It should be like 'after the OS takes
the control', and not 'forever'. For BIOS, the loader is OS.

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