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

[Nicu Pavel <npavel@xxxxxxxxxx>]

> > <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.

Thanks. I tested with the following boot parameters:
mem=128M memmap=exactmap memmap=0x08000000@0x70000000
and
mem=128M memmap=exactmap memmap=0x08000000@0x20000000

and OOM killer was invoked correctly on both cases. I guess the problem
lies with AT91bootstrap.

Thanks,
Nicu Pavel.






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