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Date:      Tue, 30 Apr 2019 16:22:05 +0000
From:      bugzilla-noreply@freebsd.org
To:        ppc@FreeBSD.org
Subject:   [Bug 235060] [boot] FreeBSD 12.0 Release DVD and CD will not boot on PowerMac G5 Quad
Message-ID:  <bug-235060-21-P6s9nYARmC@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-235060-21@https.bugs.freebsd.org/bugzilla/>
References:  <bug-235060-21@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D235060

Justin Hibbits <jhibbits@FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jhibbits@FreeBSD.org

--- Comment #21 from Justin Hibbits <jhibbits@FreeBSD.org> ---
Hi Curtis.  It's been reported that less memory actually makes the PowerMac=
 G5
boot correctly.  I'm trying to understand why Mark's SLB hack is necessary,
since it should logically be necessary on any other AIM-architecture platfo=
rm,
including my POWER9, so I'm really confused.  Unfortunately, my G5 no longer
works, and actually died shortly before I committed the change that reporte=
dly
broke G5s.  I was/still am hoping that someone could go beyond Mark's divin=
g,
and determine just why the APs can't handle SLB faults at that point in the
boot process, because they really should be able to.

kern.smp.disabled=3D1 should make any G5 boot correctly, but then you're
obviously stuck with only a single CPU.

--=20
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