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Date:      Tue, 17 Jan 2017 16:34:31 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-bugs@FreeBSD.org
Subject:   [Bug 216123] ofwfb: r269278 broke booting on Power Mac G4
Message-ID:  <bug-216123-8-FAPFMBggpC@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-216123-8@https.bugs.freebsd.org/bugzilla/>
References:  <bug-216123-8@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D216123

--- Comment #4 from Tom Lane <tgl@sss.pgh.pa.us> ---
(In reply to Kevin Bowling from comment #2)
> Can you set 'sysctl debug.debugger_on_panic=3D1' and see if you can get a=
 better idea
> where it dies from the db> prompt or by switching to kgdb from that?

I couldn't figure out how to do that using the Open Firmware boot loader --=
- it
doesn't understand sysctl, AFAICT.  I tried the -d kernel switch but it did=
n't
change anything.

This machine lacks a serial port, which makes traditional kernel debugging
difficult.  I noticed that its Open Firmware version does support telnet
connections, though.  Is there a way to use that facility for a kernel debug
console?

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