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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Roger Leigh <rleigh@codelibre.net>
cc: FreeBSD PowerPC ML <freebsd-ppc@freebsd.org>
Subject: Re: Booting 11-stable problem on a G4 mac mini
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Comments: In-reply-to Roger Leigh <rleigh@codelibre.net>
 message dated "Sun, 16 Jul 2017 11:22:59 +0100"
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Date: Sun, 16 Jul 2017 14:02:22 -0400
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Roger Leigh <rleigh@codelibre.net> writes:
> On 17/09/16 15:06, Roger Leigh wrote:
>> gem0: 10kB RX addr......
>> gem0: Ethernet address .......
>> cryptosoft0: <software crypto> on nexus0
>> and then just stops and doesn't make any further visible progress.

> This continued through into 11.0-RELEASE, but when testing with -CURRENT 
> I now no longer even get the freeze during boot; I get a black screen as 
> soon as I press Enter in the bootloader and the kernel boots, and I have 
> no way of seeing what's going on during the boot after than point.

> Has anyone else had any recent success with Mac Mini G4 hardware with 
> current builds?

This sounds like the problem I was investigating back in January.
The freeze-instantly-with-black-screen behavior happens if you have
a kernel built with debug options (the default for -CURRENT).  If you
build without, you get a hang or kernel trap after the message about
cryptosoft0.

For me, reverting r269278 made both problems go away.  I don't know
exactly what's wrong with that patch, and haven't gotten around to
poking at it further than what's described in
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=216123

			regards, tom lane