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Date:      Tue, 24 Sep 2019 13:46:51 -0700
From:      D Scott Phillips <scottph@FreeBSD.org>
To:        Renato Botelho <garga@FreeBSD.org>, Toomas Soome <tsoome@me.com>
Cc:        freebsd-current <freebsd-current@FreeBSD.org>, Kyle Evans <kevans@freebsd.org>
Subject:   Re: Can't boot current on Minnowboard
Message-ID:  <86r245777o.fsf@intel.com>
In-Reply-To: <3385516e-7794-72a5-19c4-270c6e8675b5@FreeBSD.org>
References:  <a368a8d7-b39c-c3d4-13ea-65590d966cb0@FreeBSD.org> <6F7BE568-1D8A-4E5C-9E99-361CD12CCA20@me.com> <5c42b030-dccc-98e4-2afd-7d3099ba80d3@FreeBSD.org> <B1356919-01FF-4FA6-B647-FCC521D59E2C@me.com> <3385516e-7794-72a5-19c4-270c6e8675b5@FreeBSD.org>

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Renato Botelho <garga@FreeBSD.org> writes:

> On 24/09/19 15:36, Toomas Soome wrote:
>> 
>> 
>>> On 24 Sep 2019, at 21:12, Renato Botelho <garga@FreeBSD.org> wrote:
>>>
>>> On 24/09/19 15:10, Toomas Soome wrote:
>>>>
>>>>
>>>>> On 24 Sep 2019, at 20:50, Renato Botelho <garga@FreeBSD.org> wrote:
>>>>>
>>>>> As reported at pfSense ticket [1], we can't see console after booting
>>>>> FreeBSD installer iso on Minnowboard.  This video [2] demonstrates the
>>>>> problem.
>>>>>
>>>>> Basically I can see all kernel messages but nothing from userland after
>>>>> kernel finishes to load.
>>>>>
>>>>> I would be glad to collect any kind of data you need to help tracking it
>>>>> down.
>>>>>
>>>>> Thanks!
>>>>>
>>>>> [1] https://redmine.pfsense.org/issues/9488
>>>>> [2] https://imgur.com/a/V4IrQWo
>>>>> -- 
>>>>> Renato Botelho
>>>>
>>>> Hi!
>>>>
>>>> does it have bios emulation and does it behave there?
>>>
>>> No, this board is EFI only.
>>>
>> 
>> Is it atom board? UEFI32 or UEFI64? 
>
> It's Atom and is UEFI64.
>
> I figured out this board has HDMI and serial console and output is going
> only to serial.  If LiveCD option is selected on serial it shows up on
> HDMI as well.
>
> I've downloaded latest firmware version and updated the board.  After
> that I noted serial console is configurable on setup and disabled by
> default.
>
> Even with Input/Output serial items disabled it's sending output to
> serial console and I can see UArt item listed on EFI variables on loader
> prompt.

The logic in stand/efi/loader/main.c:parse_uefi_con_out() seems to be
that RB_SERIAL is set when the serial device appears before the video
device in the ConOut efi variable, which is the case on a minnowboard
that I looked at. You can override this by setting boot_serial="NO" in
loader.conf or running `set boot_serial=NO` at the loader prompt.



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