Re: r326734: serial console fails: boot stuck at: Consoles: internal video/keyboard

From: Warner Losh <imp_at_bsdimp.com>
Date: Sat, 9 Dec 2017 14:30:38 -0700
On Sat, Dec 9, 2017 at 1:47 PM, O. Hartmann <o.hartmann_at_walstatt.org> wrote:

> Am Sat, 9 Dec 2017 13:00:12 -0700
> Warner Losh <imp_at_bsdimp.com> schrieb:
>
> > On Sat, Dec 9, 2017 at 12:13 PM, Michael Tuexen <tuexen_at_freebsd.org>
> wrote:
> >
> > > > On 9. Dec 2017, at 19:41, O. Hartmann <ohartmann_at_walstatt.org>
> wrote:
> > > >
> > > > Running a PCengines APU2C4 with FreeBSD Current, r326734, fails to
> boot,
> > > it gets stuck at
> > > > the very first messages on the serial console prompting
> > > >
> > > > Consoles: internal video/keyboard
> > > >
> > > > and then nothing more.
> > > I don't think it is a general problem with r326734. I'm running on the
> > > same hardware
> > > that revision (with some modifications to the TCP I'm testing):
> > > > uname -a
> > > FreeBSD nf3.testbed 12.0-CURRENT FreeBSD 12.0-CURRENT #31 r326734M: Sat
> > > Dec  9 20:03:59 CET 2017     tuexen_at_nf3.testbed:/usr/home/
> > > tuexen/head/sys/amd64/compile/TCP  amd64
> > >
> >
> > Hi Michael,
> >
> > What's your boot setup? BIOS vs UEFI? UFS vs ZFS? GELI? GPT vs MBR?
> Plants
> > vs Zombies? And did you update your boot blocks or not?
> >
> > Warner
>
> All right, I got your point here, my bad, my apaologies.
>
> I boot from a NanoBSD-prepared image residing on a SD card. The partiton
> scheme is GPT,
> non UEFI (the SeaBIOS, latest version available for the APU2C2 available)
> doesn't support
> UEFI. NanoBSD scripts (legacy.sh) has been modified to fit our requests.
>
> The modifications target at most the creation of a GPT partition scheme
> layout,
> installing boot/pmbr as bootcode and boot/gptboot on a freebsd-boot
> partition as well as
> boot/boot1.efifat onto a dedicated efi-type partition. The UEFI partition
> is usually
> created before(!) the freebsd-boot partition, but in this specific
> version, there is NO
> EFI partition, only the gptboot containing partition. The binaries of the
> above mentioned
> bootcode/efi code images are taken from the newly build world. I do not
> use boot0sio, the
> portion where it is installed is excluded by some "if GPT; then" clause.
>
> The last known-good version I reported in working is the image I backuped
> last time. I
> lost the USB 2.0 flash device today containing the last version, that was
> not far from
> r326218, the version that corrupted FreeBSD, I guess it was r326184, but I
> really do not
> know and I havn't a backup of that image.
>
> The buildworld process is maintained by a bunch of WITHOUT_ statements in
> a file driving
> NanoBSD. This just for the record just in case FreeBSD build system changed
> something significantly.
>

Should, but if you could share what those all are, I can tell you if any
might cause an issue that would help us root cause.


> Building a world takes 90 minutes or more, so bi-secting the problem would
> be a pain in
> the arse (that said, I imply that world and kernel need to be in sync).
>
> I would appreciate hints or tipps where to look after or how to increase
> verbosity
> especially at the first boot stage.
>

OK. So you are booting with gptboot off an SD card on the PC Engines system
via legacy methods for a UFS root partition. GELI is not involved, correct?

Sadly, there's no easy way to increase the verbosity of the early boot
since the boot blocks have to live in such a constrained environment
there's a strong bias against including debug code.

But what we know is encouraging. We know that gptboot properly loaded, and
that it found /boot/loader, loaded it, and then we had the issue.  This
helps us constrain things somewhat in testing. For the moment, we'll assume
that gptboot is good, and concentrate on when /boot/loader went south.
Before we do that, can I get any loader.conf and /boot.config /boot/config
files you have?

src/stand is easily buildable standalone these days, so my thought is
trying to build it at r326550 and putting that onto into your image.
src/stand stakes 1 minute to build on my box, so 5 on yours max :). You can
even build it standalone in a separate tree if that would help keep
whatever world you're using to do the builds purer. If we can't get
satisfaction doing that, then we'll drop back to plan B: if you give me all
the WITH/WITHOUT you are using, I could send you a tarball with about two
dozen /boot/loaders to try which should make bisecting not a total pain in
the arse. I'd likely toss in gptboot as well, since it's small. Let me know
:)

Since this is very early in /boot/loader's purview, I don't think
kernel/world matter at all (apart from the fact that loader is built as
part of world).

The PCengines APU with the most recent SeaBIOS isn't capable of booting
> FreeBSD from USB
> 3.0 devices. Even from USB 2.0 flashdrives working images fail at the boot
> loader with
> "failed with error 19".


OK. I assume this is a different issue. :)

Warner


> >
> >
> >
> > > Best regards
> > > Michael
> > > >
> > > > FreeBSD CURRENT FreeBSD 12.0-CURRENT #52 r324234: Tue Oct  3 11:00:53
> > > CEST 2017 amd64
> > > > works fine.
> > > >
> > > > What the heck has changed?
> > > >
> > > > Kind regards,
> > > >
> > > > oh
> > > >
> > > > --
> > > > O. Hartmann
> > > >
> > > > Ich widerspreche der Nutzung oder Übermittlung meiner Daten für
> > > > Werbezwecke oder für die Markt- oder Meinungsforschung (§ 28 Abs. 4
> > > BDSG).
> > >
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>
>
> --
> O. Hartmann
>
> Ich widerspreche der Nutzung oder Übermittlung meiner Daten für
> Werbezwecke oder für die Markt- oder Meinungsforschung (§ 28 Abs. 4 BDSG).
>
Received on Sat Dec 09 2017 - 20:30:40 UTC

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