2.6 Kernel , Xilinx Virtex and PPC 405 On chip memory controllers ( DSOCM and ISOCM )

[Grant Likely]

On 4/24/07, Mohammad Sadegh Sadri <mamsadegh at hotmail.com> wrote:
>
> Then in mailing list I saw some where that AVNET mini-modules are using a version of FX12 FPGA which has problem with PPC caches and as the solution the caches should be off.
>
> Does the kernel always turns on the caches? Or If I choose in the base system builder to not to use caches, the kernel will not use them?

I'm pretty sure that specific issue was due to a certain version of
silicon.  You'll need to check the Xilinx errata sheets.

>
> Any special config parameter for this in xparameters.h?

No.  You need to hack the startup code to turn off caches.

g.

-- 
Grant Likely, B.Sc. P.Eng.
Secret Lab Technologies Ltd.
grant.likely at secretlab.ca
(403) 399-0195