AMCC 405ex memory size issue

[Hunter Cobbs]

Have you modified the hardware?  The default hardware specs says there  
is only 256MB of ram. Regardless, if you upped the ram amount, you  
might need to modify u-boot itself to turn on more address lines or  
you might consider looking at your memory management allocation (slab,  
slub, etc).

Hunter Cobbs

On May 25, 2009, at 1:15 AM, konamo <dai.michael at gmail.com> wrote:

>
> any ideas?
>
>
>
> konamo wrote:
>>
>> Hi all,
>> we are using AMCC 405ex kilauea eval board as a demo, not use any
>> pci/nand function,
>> the board configuration is below:
>> u-boot 2009.01,
>> linux-2.6.25-rc2,
>> 1GB DDR2 memory(2Gbit * 4, 1 rank),
>> AMCC powerpc 405ex,
>> both 1G and 512MB memory works fine under u-boot, but linux boot  
>> fails in
>> 1G memory, if we limit mem=512M, linux could boot over nfs. Could  
>> anyone
>> pls help us how to find the root cause? thanks
>>
>
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