Re: Using both memory banks for 256Mb DRAM in AT91SAM9G45

[Russell King - ARM Linux <linux@xxxxxxxxxxxxxxxx>]

On Mon, Sep 14, 2009 at 11:58:27AM +0300, Nicu Pavel wrote:
> <0>Bad page state in process 'python'                   
> <0>page:c04419e0 flags:0x30303030 mapping:30303030 mapcount:808464433 count:808464432

This looks like something overwrote the page structure.  At a guess, I'd
say that the SDRAM controller is not correctly configured, so you're
getting memory aliases over the 256MB you've given the kernel.

Try reducing the amount of memory by a factor of two and see whether
that prevents the OOPS occuring.  If so, it points to incorrect SDRAM
configuration.

-------------------------------------------------------------------
List admin: http://lists.arm.linux.org.uk/mailman/listinfo/linux-arm
FAQ:        http://www.arm.linux.org.uk/mailinglists/faq.php
Etiquette:  http://www.arm.linux.org.uk/mailinglists/etiquette.php