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Re: your daily build of powerpc floppies



On Fri, Dec 10, 2004 at 09:38:46PM +0100, Ralf Schlatterbeck wrote:
> On Fri, Dec 10, 2004 at 08:56:50PM +0100, Sven Luther wrote:
> > On Fri, Dec 10, 2004 at 08:14:42PM +0100, Ralf Schlatterbeck wrote:
> > > On Fri, Dec 10, 2004 at 07:16:58PM +0100, Sven Luther wrote:
> > > > 
> > > > What graphic card do you have on this box ? 
> > > The built-in graphics. No extra card.
> > 
> > Ok, do you know what graphic chips is used in it, and what driver is used on
> > it? more /proc/fb on the second console should give you that info.
> On 2.4 (which I'm currently booted into) cat /proc/fb says
> 0 control

So it has controlfb.

> I'll let you know what the other (floppy is 2.6 Kernel, right?)
> version says when I have time to reboot.
> 
> > > Excuse my ignorance,
> > > how do I specify boot parameters with the hfs boot floppies?
> > 
> > Ah, indeed, you need ot build a new miboot floppy, not evident. Rick and the
> > other oldworld guys have in the past looked at how to do this. If you want, i
> > can build you a specialized boot floppy, so you can try this out.
> Would be nice to try, yes. But I'm a bit further now, so see below. But
> I'd try to get the other set of floppies running, too...

Probably not needed then.

> 
> > BTW, did you try the ofonly boot floppy ?
> Yes for the rc2, No for the daily build.
> For rc2 it is also immediately rejected. I also tried to boot into 
> Open Firmware (with serial console attached) and said
> boot fd
> but it produces a message saying that the load command is not
> supported for this device. I have never been able to boot a floppy
> from OF.

Ok. You could try netbooting also : 

  http://people.debian.org/~luther/d-i/images/daily/powerpc/netboot/vmlinuz-coff.initrd

> > > > Did you try both the floppies and the floppies-2.4 ? 
> > > >From the release-candidates, yes. From your daily build, no.
> > > Will be the next thing I'll do.
> > Ok.
> Done. Interesting effect with 2.4:
> I have two Monitor Adapters for the mac (no, I don't have a fancy one
> with dip switches). From my Monitor I'm getting the following info about
> the signal (and of course very different resolution) with the different
> adapters (changing of resolutions requires a reboot):
> - MAC 1152x870 / 75 Hz
> - MAC  640x480 / 67 Hz
> I'm *not* seeing the d-i menu with the higher resolution. But when I
> swith VC to Console 2, i see the d-i menu for an instant. Note that the
> monitor is *not* out of sync, it still reports the resolution on both
> VCs.

Ok, so it is probably only a resolution problem.

> I have veryfied that with the combination of boot/root floppy (from
> floppy) I'm getting a blank screen with *both* resolutions, so this is
> a different problem.

Not necessarily, as maybe the 2.6 kernel calculate resolution differently.

> I'm now installing the base system (!) with the low resolution which
> means I have successfully connected to the network and partitioned the
> disk.

Cool.

> > > For the release candidates I'm sure it's not the kernel: The floppy is
> > > immediately ejected.
> > 
> > Oh, i know why that is, the rc2 floppies where built without miboot, since
> > miboot is non-free, so there is no chance that those floppies will work.
> Will this change in a future release? Or alternatively, will your daily
> build floppies stay available?

The daily buils will stay available, as for getting them in the real debian
release, two things are needed : 

 1) being able to build miboot from a debian present toolchain, and not on
 some older version of codewarrior for mac os 9 and earlier.

 2) reverse engineering the boot sector, which is probably 200 or so m68k
 assembly instructions, mostly pmac rom trap instructions. I have not looked
 at them, since i want to write the stuff, but we need someone else to look at
 them, dissassemble them, and write a spec of what they do, and then we can
 generate them again or something.

If 2) is done, then miboot can go into contrib. If 1) is done, then it can go
into main.

Friendly,

Sven Luther



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