RE: memory problems on ppc 8260 based hardware

Be aware that there is some timing problems on the SDRAM interface on
the 826x CPUs
(Look at motorolas site)
This sound very much like the problems I had before I fixed the hardware
on an inhouse board.

-----Original Message-----
From: owner-linuxppc-embedded@lists.linuxppc.org
[mailto:owner-linuxppc-embedded@lists.linuxppc.org]
Sent: Tuesday, May 04, 2004 10:11
To: linuxppc-embedded@lists.linuxppc.org
Subject: memory problems on ppc 8260 based hardware



I'm running into  memory problems on ppc 8260 based hardware.
The kernel is based on linux-2.4.4-2002-10-06.tar.bz2 from

www.denx.de . (use uboot as bootloader.)

I use some debug tools and find when paging_init( ) function finished
(start_kernel --setup_arch--paging_init), some codes were destroyed such
as sort_exception_table( ) (the next line in setup_arch( ), so the
kernel hang) , some codes were protected well such as memset( ). (using
LED in parallel port(adding some codes in kernel), I got the same
results,the kernel hang after paging_init( ))

what's the reason? Any advise will be appreciated.


best regards.


liu


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