How to build the zImage.prep was Re: Bug#345424 acknowledged by developer (Bug#345424: fixed in linux-2.6 2.6.15-1)

How to build the zImage.prep was Re: Bug#345424 acknowledged by developer (Bug#345424: fixed in linux-2.6 2.6.15-1)

[Sebastian Heutling]

Hi Sven,

maybe I'm just stupid - but I am not able to get an image built that can 
be netbooted or put into the prep-bootloader partition. Looking at the 
sources I wonder how you do it for the debian linux-images-* as the only 
Makefile where it seems to generate a "zImage.prep" automagically is in 
arch/ppc/boot/simple/Makefile. But that doesn't work, I guess, because 
CONFIG_PPC_PREP doesn't exist anymore (at least I couldn't find it in 
"menuconfig" or in the ".config" file).

Before trying to build a kernel myself I tried the debian linux binary 
image. An image for powerpc is not there yet so I used rc7. I netbooted 
"/boot/vmlinuz-2.6.15-rc7-powerpc" and the result was that I got a lot 
of output saying that there is something wrong. I assume the output was 
from the firmware because the kernel usually doesn't report an endless 
list of errors saying something about "stack exception" every now and 
then and mostly printing zeros followed by a new line character.

After that I copied the config from that kernel, downloaded the debian 
sources of 2.6.15, enabled ISA and some alsa ISA sound drivers and run 
into the trouble above.


Sebastian


Debian Bug Tracking System wrote:
> This is an automatic notification regarding your Bug report
> #345424: linux-source-2.6.14: Missing IDE IRQ for PReP Utah (PowerstackII Pro4000),
> which was filed against the linux-source-2.6.14 package.
> 
> It has been closed by one of the developers, namely
> Sven Luther <luther@debian.org>.
> 
> Their explanation is attached below.  If this explanation is
> unsatisfactory and you have not received a better one in a separate
> message then please contact the developer, by replying to this email.
> 
> Debian bug tracking system administrator
> (administrator, Debian Bugs database)
> 

Re: How to build the zImage.prep was Re: Bug#345424 acknowledged by developer (Bug#345424: fixed in linux-2.6 2.6.15-1)

[Sven Luther]

On Thu, Jan 05, 2006 at 11:51:01AM +0100, Sebastian Heutling wrote:
> Hi Sven,
> 
> maybe I'm just stupid - but I am not able to get an image built that can 

No, you just fail to read the manual :)

please : man mkvmlinuz :)

mkvmlinuz allows to build the zImage.prep from the vmlinux outside of the
kernel build process, which is what we are doing, otherwise the zImage.prep
may indeed be the way to handle this.

> be netbooted or put into the prep-bootloader partition. Looking at the 
> sources I wonder how you do it for the debian linux-images-* as the only 
> Makefile where it seems to generate a "zImage.prep" automagically is in 
> arch/ppc/boot/simple/Makefile. But that doesn't work, I guess, because 
> CONFIG_PPC_PREP doesn't exist anymore (at least I couldn't find it in 
> "menuconfig" or in the ".config" file).

Should work, i booted 2.6.14 on my powerstack II, didn't try 2.6.15 yet, but
will this WE.

> Before trying to build a kernel myself I tried the debian linux binary 
> image. An image for powerpc is not there yet so I used rc7. I netbooted 
> "/boot/vmlinuz-2.6.15-rc7-powerpc" and the result was that I got a lot 
> of output saying that there is something wrong. I assume the output was 
> from the firmware because the kernel usually doesn't report an endless 
> list of errors saying something about "stack exception" every now and 
> then and mostly printing zeros followed by a new line character.

Mmm, upstream may have broken prep on 2.6.15, i have to say i didn't test it,
will have a look this WE, ok ? 

> After that I copied the config from that kernel, downloaded the debian 
> sources of 2.6.15, enabled ISA and some alsa ISA sound drivers and run 
> into the trouble above.

Mmm, i am leaving for two days now, but i will have a look afterward.

Friendly,

Sven Luther

Re: How to build the zImage.prep was Re: Bug#345424 acknowledged by developer (Bug#345424: fixed in linux-2.6 2.6.15-1)

[Sebastian Heutling]

Sven Luther wrote:
> On Thu, Jan 05, 2006 at 11:51:01AM +0100, Sebastian Heutling wrote:
> 
>>Hi Sven,
>>
>>maybe I'm just stupid - but I am not able to get an image built that can 
> 
> 
> No, you just fail to read the manual :)
> 
> please : man mkvmlinuz :)

Uhm! I didn't even think about that. I was just used to that somewhere 
under arch/ppc/ is a zImage.prep after doing a "make zImage".
But anyway: Switching to shame mode. ;)



Sebastian

Re: How to build the zImage.prep was Re: Bug#345424 acknowledged by developer (Bug#345424: fixed in linux-2.6 2.6.15-1)

[Grant Likely]

Sebastian Heutling wrote:
> Hi Sven,
> 
> Before trying to build a kernel myself I tried the debian linux binary
> image. An image for powerpc is not there yet so I used rc7. I netbooted
> "/boot/vmlinuz-2.6.15-rc7-powerpc" and the result was that I got a lot
> of output saying that there is something wrong. I assume the output was
> from the firmware because the kernel usually doesn't report an endless
> list of errors saying something about "stack exception" every now and
> then and mostly printing zeros followed by a new line character.
Have you tried 2.6.14?  I'm having a similar issue with PReP images
using QEMU.  2.6.14 works, but 2.6.15 is busted.  It *might* be the same
issue.

http://ozlabs.org/pipermail/linuxppc-dev/2005-December/020782.html

I was able to use git-bisect to narrow it down to 20 or so changes, but
I didn't get any farther.

Cheers,
g.


-- 
Grant Likely, B.Sc. P.Eng.
Secret Lab Technologies Ltd.
(403) 663-0761

Re: How to build the zImage.prep was Re: Bug#345424 acknowledged by developer (Bug#345424: fixed in linux-2.6 2.6.15-1)

[Grant Likely]

Paul Janzen wrote:
> grant.likely at secretlab.ca (Grant Likely) writes:
> 
> 
>>Have you tried 2.6.14?  I'm having a similar issue with PReP images
>>using QEMU.  2.6.14 works, but 2.6.15 is busted.  It *might* be the same
>>issue.
>>
>>http://ozlabs.org/pipermail/linuxppc-dev/2005-December/020782.html
>>
>>I was able to use git-bisect to narrow it down to 20 or so changes, but
>>I didn't get any farther.
> 
> 
> This *might* be the problem described in: 
> 
> http://ozlabs.org/pipermail/linuxppc-embedded/2006-January/021550.html
> 
> It matches the git-bisect ID's you narrowed it down to, and it matches
> the problem report.  I'm just not sure if it matches the environment
> you're running in. 

Yes, that's exactly it.  QEMU boots prep images again with that patch.
Thank you.

g.

-- 
Grant Likely, B.Sc. P.Eng.
Secret Lab Technologies Ltd.
(403) 663-0761

Re: How to build the zImage.prep was Re: Bug#345424 acknowledged by developer (Bug#345424: fixed in linux-2.6 2.6.15-1)

[Sebastian Heutling]

Grant Likely wrote:
> Paul Janzen wrote:
> 
>>grant.likely at secretlab.ca (Grant Likely) writes:
>>
>>
>>
>>>Have you tried 2.6.14?  I'm having a similar issue with PReP images
>>>using QEMU.  2.6.14 works, but 2.6.15 is busted.  It *might* be the same
>>>issue.
>>>
>>>http://ozlabs.org/pipermail/linuxppc-dev/2005-December/020782.html
>>>
>>>I was able to use git-bisect to narrow it down to 20 or so changes, but
>>>I didn't get any farther.
>>
>>
>>This *might* be the problem described in: 
>>
>>http://ozlabs.org/pipermail/linuxppc-embedded/2006-January/021550.html
>>
>>It matches the git-bisect ID's you narrowed it down to, and it matches
>>the problem report.  I'm just not sure if it matches the environment
>>you're running in. 
> 
> 
> Yes, that's exactly it.  QEMU boots prep images again with that patch.
> Thank you.
> 
> g.
> 

Great! :)


Sebastian