Failed attempt to boot a (non-debug) head -r339076 on an old PowerMac G5 "Quad Core" (built via devel/powerpc64-gcc): Waking up CPU 1

[Michael Tuexen]

> On 8. Oct 2018, at 09:48, Mark Millard via freebsd-ppc <freebsd-ppc at freebsd.org> wrote:
> 
> [I finally have access to old PowerMacs again. The below
> is based on my environment for experimenting with building
> via more modern C/C++ compilers with matching toolchains.
> The build here was via a cross build from amd64 via
> devel/powerpc64-gcc .]
> 
> When I attempt to boot the PowerMac G5 "Quad Core"
> with my head -r339076 build it gets as far a reporting
> (based on boot -v output):
> 
> . . .
> ada0: (I'll not list the 5 ada0: lines)
> GEOM: new disk cd0
> GEOM: new disk ada0
> Adding CPU 0, hwref=ff89d680, awake=1
> Waking up CPU 1 (dev=ff89eb70)
> 
> That is the last of the output. After a while the fans
> wind up. (The text is hand translated from a picture
> of the screen.)
> 
> Without the "boot -v" the "ada0:" lines are the last to
> show.
> 
> The build is a non-debug build (with symbols). I've
> not tried a debug kernel build yet. It may be a while
> before I will get to. Nor have I tried a gcc 4.2.1
> based build yet.
> 
> At this point I do not have a clue what is going on.
> This early in the boot I'm not sure how or if I'll
> get a clue. (I've never had serial console access
> on the old PowerMac's, which contributes to the messy
> context.)
> 
> I do have in place in the variation used of src.conf:
> LOADER_DEFAULT_INTERP=4th
> 
> The PowerMac G5 used does boot fine with the boot disk
> I had experimented with back in May (or before).
Does it boot when you disable SMP by adding
kern.smp.disabled=1
to /boot/loader.conf

This turned a non-booting/hanging up dual CPU G5 into a
very stable (single core) machine...

Best regards
Michael
> 
> ===
> Mark Millard
> marklmi at yahoo.com
> ( dsl-only.net went
> away in early 2018-Mar)
> 
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