Re: Booting 2.2.0-pre6 on a PowerStack-II (Net 4000/200)

Michael Meissner (meissner@cygnus.com)
Fri, 15 Jan 1999 16:58:05 -0500

On Fri, Jan 15, 1999 at 04:28:55PM +0100, Alois Fertl wrote:
> Cort Dougan wrote:
> >
> > It looks like your zImage is being stomped on before it can be
> > decompressed. I'll take a look at the boot loader code and see why it
> > isn't adjusting your free ram section. You might want to try changing to
> > load address in the PPCBug to be near the top of memory in the mean time.
> I guess this system is running "PowerPC Open Firmware". You can change the
> load address via the firmware menu:
> Administrative Options...
> ---> Modify the Configuration Settings...
> ---> Edit Configuration Variables
> step to the parameter "load-base" and enter a new value (decimal).
> One other problem is the this firmware version obviously does not provide
> residual data. So Linux will probably not find the PCI devices correctly.

I tried setting the load-base to various values, and all of them caused dumps
within the monitor (I tried 10 meg, 64 meg, 3 meg, 120 meg, and even 4 meg + 4
all to no avail).

Also, Gary Thomas's 2.0.32 kernel seemed to have no problem in sizing memory,
so I presume it is able to pick up the residual data.

> >
> > } loaded at: 00400400 00415FD0
> > } relocated to: 00600000 00615BD0
> > } zimage at: 0040A400 0049A889
> > } avail ram: 00400000 00600000
> > }
> > } Linux/PPC load: console=tty0 console=ttyS0,9600n8 root=/dev/sda2 mem=127M
> > } Uncompressing Linux...done.
> > } Now booting the kernel
> >
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-- 
Michael Meissner, Cygnus Solutions (Massachusetts office)
4th floor, 955 Massachusetts Avenue, Cambridge, MA 02139, USA
meissner@cygnus.com,	617-354-5416 (office),	617-354-7161 (fax)


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