Hi Brad,
I just did one other test. This time I disabled the PMU driver in the kernel and this time it booted to the point of needing a rootfs on the Powerbook. So like you said, it is a bug in the PMU drivers.
Thanks,
J Silverman
--- On Fri, 8/15/08, J Silverman <g1powermac@xxxxxxxxx> wrote:
From: J Silverman <g1powermac@xxxxxxxxx>
Subject: Re: Known working 2.6 kernel config for m68k Mac
To: "Brad Boyer" <flar@xxxxxxxxxxxxx>
Cc: linux-m68k@xxxxxxxxxxxxxxx
Date: Friday, August 15, 2008, 5:49 PM
Hi Brad,
Thanks for the info. It inspired me to drag out one of the
other macs in my collection to test this out. It's a
Performa 637cd, and it booted the kernel just perfectly
right up to the point of looking for a ramdisk or rootfs
which, as there wasn't any on the floppy, it panicked.
And I must say Tux looks quite nice on a CRT monitor
compared to the LCD in my Powerbook ;-)
I wish I could test this on my Mac Classic II, but it
currently doesn't have enough ram to boot linux (only
4mb). Also, I'm hoping to get a few more m68k Macs so I
can continue testing. It looks like a couple people will
be donating their old macs (two more different powerbooks
and a Mac IIci). Now I just need more desk space. . .
Thanks,
J Silverman
--- On Fri, 8/15/08, Brad Boyer <flar@xxxxxxxxxxxxx>
wrote:
From: Brad Boyer <flar@xxxxxxxxxxxxx>
Subject: Re: Known working 2.6 kernel config for m68k
Mac
To: "J Silverman"
<g1powermac@xxxxxxxxx>
Cc: "Finn Thain"
<fthain@xxxxxxxxxxxxxxxxxxx>,
linux-m68k@xxxxxxxxxxxxxxx
Date: Friday, August 15, 2008, 1:55 PM
On Fri, Aug 15, 2008 at 10:39:39AM -0700, J Silverman
wrote:
Now I got some interesting news. I took Stephen
Marenka's config for
a 2.6.25.2 kernel and chopped out just enough to
squeeze the kernel
on a single floppy. And guess what? It actually
booted! Well, sort
of. The kernel messages started scrolling like
normal
then the whole
machine spontaneously shut off. I seen this
happen
once before when
I had the fpu emulation option turned on. So I
turned
it off and
tried again. This time it didn't boot. It
stopped at the same
place as before.
The spontaneous reboot or shutdown on a PowerBook is
generally a
result of not having a good PMU driver. If the driver
drops
a
message, the PMU considers the OS to have crashed and
kills
off
the whole system. It's kind of a painful process.
I
have done
all my work on desktop systems, primarily the IIfx. I
think
Finn
has mostly been using Quadra systems for development.
Brad Boyer
flar@xxxxxxxxxxxxx
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