[parisc-linux] 64-bit kernel booting problem (was: B132L outperforms...)

[parisc-linux] 64-bit kernel booting problem (was: B132L outperforms...)

[Kurt Fitzner]

Grant Grundler wrote:
>>p.s.  I installed HPUX in 64-bit mode.  Which, so I'm told, should
>>have decreased my performance.  I'd like to get my C160 running Linux
>>in 64-bit mode, but I can't. :(
>
> Sure you can. recent 64-bit kernels will boot on C160.
> It's just not an obvious win in most cases.

No, I mean I'm running into problems trying to get a 64-bit kernel to
work.  Two problems - one I could work around, one I can't.

First is as soon as any kernel I've tried gets to enumerating EISA
devices it hangs.  The panel LEDs flash in a specific pattern.  I think
I remember reading about how each pattern is one nybble of an error code
(wow - I don't remember the last time I got to use the word 'nybble').
I should prolly do a ToC and grab the data for reporting, just haven't
got around to it yet.  Now, I know for a sure it's at the EISA point in
a 2.6.13 kernel as I can tell from the messages.  I think something
changed in recent kernels so that kernel messages are shown sooner in
the boot process.  Earlier kernels would just hang after about the same
amount of time, but I wouldn't see the message.  The LED pattern is the
same in all cases, regardless of kernel version.  BTW - can someone
confirm my kernel message theory?  Whoever made that change, thanks. :)

Anyways, if I disable EISA in the kernel, I get up to the SCSI driver it
hangs for about a minute then spits out a message about offlining the
drive:

ncr53c720-0: rev 0xf irq 67
ncr53c720-0: ID 7, Fast-10, Parity Checking, Differential
scsi0 : ncr53c8xx-3.4.3g
scsi: Device offlined - not ready after error recovery: host 0 channel 0
 id 0 lun 0

	Kurt.
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Re: [parisc-linux] 64-bit kernel booting problem (was: B132L outperforms...)

[Grant Grundler]

On Fri, Aug 19, 2005 at 04:47:01AM -0600, Kurt Fitzner wrote:
> First is as soon as any kernel I've tried gets to enumerating EISA
> devices it hangs.

Yes - EISA is known to be broken....certain people should have
enough information at this point to write the code but
it's not trivial to get working. EISA just isn't that exciting
these days.

> The panel LEDs flash in a specific pattern.  I think
> I remember reading about how each pattern is one nybble
> of an error code

If so, that's probably documented in one of the user guides.
See "Tech Documentation" on www.parisc-linux.org.
Possibly this one:
	http://ftp.parisc-linux.org/docs/platforms/cxxx-service.pdf


> I should prolly do a ToC and grab the data for reporting,
> just haven't got around to it yet.

See the FAQ for how to report kernel bugs - some good
tips there on what's needed.


> Anyways, if I disable EISA in the kernel, I get up to
> the SCSI driver it hangs for about a minute then spits
> out a message about offlining the drive:
> 
> ncr53c720-0: rev 0xf irq 67
> ncr53c720-0: ID 7, Fast-10, Parity Checking, Differential
> scsi0 : ncr53c8xx-3.4.3g
> scsi: Device offlined - not ready after error recovery: host 0 channel 0
>  id 0 lun 0

Can you connect a serial console and capture the entire output?
Normally, one just needs to disconnect the keyboard and
talk to serial port 1 with minicom from another box.

I'm pretty sure this worked before on C200/C240/C360
machines before.

thanks,
grant
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