On Wed, 16 Jun 2010 13:37:24 +0200 Lasse Skov lasko@kk-electronic.com wrote:
Hi
I have a build for my mpc8377 ppc prototype board and i will try to disable the cache before running my BSP on my target. Uboot running in cache so i can't not just disable cache.
So my question is how to disable cache for the target here? Or should i instead disable it when booting my BSP? and make the test here.
there is a disable cache command, but I think bootm reenables it. Bottom line, try disabling it in the OS. In linux this can be done using modules.
The problem is that i think thers is some problem with snooping on the ppc. And it someties look likes there is some collision on the internal bus between memory and the tsec controllers.
lots of etsec traffic is causing memory corruption? if it's linux, try upgrading your kernel version to get the latest driver updates. Otherwise, unless u-boot has misconfigured memory, I don't think this is a topic for this list (try netdev?).
hth,
Kim