RPi2 snapshot for armv7 won't boot.

[Mark Millard]

On 2017-Nov-1, at 3:51 PM, Carl Johnson <carlj at peak.org> wrote:

> I had previously tried to upgrade my RPi2 12.0-CURRENT system from armv6
> to armv7, but it then refused to boot.  This time I downloaded the
> latest snapshot (r325156 from 20171030) and it also refuses to boot for
> exactly the same reason.  In every case the kernel loads, but then it
> reports that init has died, and then panics and drops into kdb.  It
> gives a stack backtrace, but that doesn't mean anything to me.
> 
> Is this just me, or is anybody else having this problem?  If others have
> the problem, is there some workaround to get it working?
> 
> Thanks in advance for any ideas.

Others are also seeing the problem, not just on
RPI2's.

It looks like it broke between:

-r324743 and -r325156

someplace relative to whatever is causing the
init problem.

Details that lead me to that conclusion, if
you care. . .

One of the FreeBSD folks contacted me privately because his
bananapi-m3 experiments were getting the init problem and
he was hoping I could test independently to see if the
problem was local to his attempt to modernize the BPI-M3
support so it would again eventually be supported.

I had to be doing other things but was able to report
that my context was a working variant of -r324743 and
showed him the two small diffs that I used. (The issues
needing the diffs are not tied to any init behavior.)

He tried his experiment against -r324743 and his
experimental code and *.dt* based .dts booted fine.

It looks like something after -r324743 broke things
such that the init problem exists for armv7.

[I'm still not active for investigating any of this.]

===
Mark Millard
markmi at dsl-only.net