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RE: PowerPC Debian install on IBM 43P boot problems...

Hey guys,


  Thanks for the feedback.  I’ve done all the tests for proper SCSI termination in all possible ways, even keeping a single disk, and CDROM, and I’m still getting the error below.


  Worst still. I’ve disconnected the entire SCSI chain cable.  And yet, when booting my Woody 3.0 debian from my floppy containing the boot, the error still shows.


  I would be tempted to think the controller has a physical error, but it does not explain why it was all working under AIX, and I was able to partition/initialize all disks perfectly.


  It really seems like the boot which gets something corrupt in the drivers.   Doing the diagnostics using the SMS disk reports a perfectly functioning hardware…  I’m puzzed.  I’ve also swapped CDROM drive, cables, etc.


   Any hint I could try?  I’d like to try an install from CDROM but I can’t manage to find how to actually boot from a CD, only from floppy.


   Many Thanks



From: dale-bresnan [mailto:dalep1@bresnan.net]
Sent: August-29-12 5:18 PM
To: Bruno Gallichand; debian-ppc
Subject: Fw: PowerPC Debian install on IBM 43P boot problems...



----- Original Message -----

Sent: Wednesday, August 29, 2012 3:15 PM

Subject: Re: PowerPC Debian install on IBM 43P boot problems...




you are correct.

fingers got happy.

but anyway, searching the 2.6.8 kernel code ,

i can find no reference the the error messages

SCSI host 0   abort   (pid 0)  timed out – resetting

SCSI bus is being reset for host 0 channel 0

Ncr53c8xx_reset : pid = 0  reset_flags = 2  serial_number=(increasing numbers)   serial_number_at_timeout= (increasing numbers)

but found a reference in the ncr driver about status returned

**      Check for no terminators or SCSI bus shorts to ground.
**      Read SCSI data bus, data parity bits and control signals.
**      We are expecting RESET to be TRUE and other signals to be
**      FALSE.

so isolating the 'boot' drive and terminating the scsi chain can help.





----- Original Message -----

From: "Geert Uytterhoeven" <geert@linux-m68k.org>

To: "dale-bresnan" <dalep1@bresnan.net>

Sent: Wednesday, August 29, 2012 1:32 AM

Subject: Re: PowerPC Debian install on IBM 43P boot problems...


> On Tue, Aug 28, 2012 at 11:29 PM, dale-bresnan <dalep1@bresnan.net> wrote:
>> there were two types of scsi controller on the 43P systems
>> the onboard is/was 53c810 which has a SE/LVD drive interface.
>> optional was 53c825 which is a HVD drive interface.
> Euh, according to my memories (and sym_dev_table[] in
> drivers/scsi/sym53c8xx_2/sym_hipd.c seems to agree), the 53c810 is a narrow
> Fast SCSI chip, so it is old SE, not SE/LVD. LVD was only introduced with
> Ultra2 SCSI.
> Gr{oetje,eeting}s,
>                        Geert
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                -- Linus Torvalds
> --
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