Re: 2.2.* broken on IBM 850?

Hi.

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From: David Monro <redacted> 
on " 2.2.* broken on IBM 850? "
date: Mon, 18 Oct 1999 20:31:51 +0100 >>>

Hi,

has anybody got a 2.2 kernel working properly on an IBM 
PowerSeries 850(codenamed Carolina I think)?

I can boot an old 2.0.32 kernel on it and it mostly seems to 
work, although the interrupt assignments are a little odd - 
NT on the same box claims that ide0 is on 16, ide1 is on 17 
and my ncr825 card is on 15.
Linux seems to think that ide0 is on 13, ide1 doesn't exist 
(and that the IDE cdrom on it isn't there either) and that 
the SCSI card is on irq 10. Is ARC playing games with me?

Interrupt settings on SCSI can change on kernel.
Would you rebuild your kernel for you?

2.2 kernels (and I've tried quite a few, namely install images 
for yellow dog, debian and linuxppc, plus random other bits and 
bobs) exhibit symptoms which to me look like the interrupts 
aren't getting through. I get "hda IRQ probe failed (0)" several 
times, the partition table read fails, and then the ncr53c8xx 
driver gets a timeout on every command, which is exactly what 
happens on x86 machines when the interrupt mappings get stuffed 
and the driver isn't getting the interrupts.

Would you use the Gary's zImage-2.2.10-ide image?
That stays on ftp://ftp.linuxppc.org/user/gdt/ .

And you would like to stay Linux with NT?
That sounds difficult on 850.

You would boot up Linux from FDD (or CD-ROM) ?
When boot from FDD, boot up Linux, and automatic boot up NT 
without FDD. That maybe selects booting.

The debian install image (bootprep.bin) behaved slightly
differently - when I took the SCSI card out it managed to get
the partition table from the hard drive while whinging about 
it all the time (timeouts I think),
and then as soon as it got to mounting the ramdisk the screen
went black and stayed that way. Trying to get it to boot hda1
in single user mode actually got as far as starting init, and
I saw a shell prompt for a split second before the screen went
black :-(

When boot up kernel, options for tty output makes signs out
for serial console. To stop this, delete before booting by 
backspace.

I didn't use debian/prep (I am waiting for the CD-ROM image.).
So I don't know about it, but if the installer of debian use 
some other screen format, like framebuffer? 

The interrupt mappings seem to be the same under 2.2 as under 2.0.
Oh, does anybody know if the ibmtr driver works with either
2.0 or 2.2? 
This is my first attempt at messing with PPC, although I've had
a fair bit of experience with x86 and alpha boxes under linux.

Cheers,
	David

Best regards.
----------------------
Kaz Aoshima = PReP station
Material deveropment, Faculty of engineering, 
Tohoku University, Japan
E-mail:aoshimak@mail.cc.tohoku.ac.jp
#I would appreciate if you could give me suggestions
 for my impolite English expressions.

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