RE: random panic and freezes on mpc8349 itx

What version of U-boot are you using?  Could it be RAM initialization?
There was a RAM initialization bug in the ITX for u-boot git sources
until April 2007.
	Good luck,
		Michael

linuxppc-embedded-bounces+mbenedict=3Dtwacs.com@ozlabs.org wrote:

Hi,
=20
I am currently working with an MPC8349ITX board and I have
some trouble with
the kernel as soon as it reaches userland.
=20
If I boot the kernel with all the memory (256MB) available (no
mem=3D... on the command line), I get random freezes or random kernel
panics.=20
Some times it
won't even run init. Some times it will panic badly if I try
to put some
pressure to the system (stress --cpu 256). Some times it will hang
immediately after logging in, ...
=20
If I boot the kernel with mem=3D64M, these freeze and random
panic disapear and
I am able to run the stress program without any problems.
=20
I have had this strange behaviour on both kernel 2.6.20 and
2.6.22 with
mpc834x_itx_defconfig (both from kernel.org) (ARCH=3Dpowerpc).
=20
I am inclined to say that it is not a broken RAM chip problem because
if I use a 2.6.17 from kernel.org with all the RAM available
(ARCH=3Dppc) configured with mpc834x_sys_defconfig (there was no
defconfig for the=20
itx board on this
version) everything runs fine and I am able to run the stress program
without any problems.
=20
The panic does not happen very often, 90% of the time, the
board hangs and
stops responding to ping. When a panic do happen it is almost always
in a different place.
=20
Does any of you have met this problem before ? If you have
any clues about
what is hapenning I'd be glad to hear about it :)
=20
Thank you for your attention,
=20
Regards,