On Wed, Nov 05, 2014 at 23:04, John Merriam wrote:
> Hello.  I am trying to create a 'headless' setup using a softraid crypto
> root with serial console on OpenBSD 5.6-release amd64.
> 
> I have everything installed and working just fine, except I'm having a
> problem getting the 'headless' part going.
> 
> I followed the instructions in section 7.6 of the FAQ at
> http://www.openbsd.org/faq/faq7.html#SerCon   I edited /etc/ttys to
> enable the getty for tty00.  I added 'set tty com0' to /etc/boot.conf
> 
> It doesn't seem to work though.  The Passphrase: prompt is still output
> to pc0, not com0.
> 
> If I enter a bogus password at the Passphrase: prompt on pc0 to get to a
> boot> prompt, I can enter 'set tty com0' after which I get a Passphrase:
> prompt on com0 and everything works fine.
> 
> It seems like for some reason /etc/boot.conf is not being seen/used?  I
> would guess it might have something to do with the softraid crypto root
> setup but I don't know.

Right. boot.conf is encrypted, so of course it can't be read until
after the passphrase has been read.

> Is there a bit that needs flipping somewhere to get the serial console
> to work with crypto root?  Any info or pointers on this would be greatly
> appreciated.  Thanks.

If you look in sys/arch/amd64/stand/libsa/bioscons.c you'll see two
functions, pc_probe and com_probe, which set cn->cn_pri. You'll need
to swap MIDPRI and LOWPRI and rebuild, then rerun installboot.

That either makes sense or is a bunch of gibberish. I haven't actually
worked this out, so I can't give you a precise recipe.

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