[U-Boot-Users] How to Handel Non-Continuous Memory Regions

[Ricardo]

Hello again

AFAIK the ppc440 runs ALLWAYS in virtual mode, and supports allocate
anything in the real space to anywhere in the virtual space.

     Best regards

On Thu, Jul 24, 2008 at 10:30 PM, Stuart Wood
<stuart.wood at labxtechnologies.com> wrote:
> I'm using an ARM90T processor core. It does have a MMU. My
> understanding is that u-Boot has discouraged the use of a MMU for
> virtual memory space. Are there any examples of processors
> architectures that can enable the MMU for address translations?
>
> Stuart
>
> On Thu, Jul 24, 2008 at 11:50 AM, Ricardo <ricardo.ribalda at gmail.com> wrote:
>> Hi Stuart
>>
>> I don't know waht architechture that you are using, but if you have an
>> mmu maybe you can set it to have a virtual memory space contigous.
>>
>>     Best regards
>>
>> On Thu, Jul 24, 2008 at 4:56 PM, Stuart Wood
>> <stuart.wood at labxtechnologies.com> wrote:
>>> I've got an interesting problem. If loading a large image to memory
>>> and then copying it to flash it gets corrupted.
>>> It appears to happen when the image size becomes larger then a bank of
>>> SDRAM. I've got a 32 MByte SDRAM
>>> that appears as 4 banks of 8 MBytes.
>>>
>>> The system is using u-boot 1.1.3 and we will move to 1.3.3 soon.
>>> The memory regions are broken up like this.
>>>
>>> 0xE0000000 - 0xE07FFFFF
>>> 0xE1000000 - 0xE17FFFFF
>>> 0xE4000000 - 0xE47FFFFF
>>> 0xE5000000 - 0xE57FFFFF
>>>
>>> The processor is a Cirrus Logic EP9302 ARM920T.
>>>
>>> What would the most appropriate way of handling files larger than 8MBytes?
>>>
>>> --
>>> Stuart Wood
>>>
>>> Lab X Technologies, LLC
>>> 176 Anderson Ave.
>>> Suite 302
>>> Rochester, NY 14607
>>> Phone: (585) 271-7790 x207
>>> Fax: (585) 473.4707
>>>
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>>
>>
>>
>> --
>> Ricardo Ribalda
>> http://www.eps.uam.es/~rribalda/
>>
>
>
>
> --
> Stuart Wood
>
> Lab X Technologies, LLC
> 176 Anderson Ave.
> Suite 302
> Rochester, NY 14607
> Phone: (585) 271-7790 x207
> Fax: (585) 473.4707
>



-- 
Ricardo Ribalda
http://www.eps.uam.es/~rribalda/