[U-Boot] at91rm9200dk -AT49BV642D flash

[U-Boot] at91rm9200dk -AT49BV642D flash

[rajeesh]

Hi all,

We have at91rm9200dk board it is working with AT49BV642D now can we
change flash to  AT49BV642DT 

without touching the source code.  (in uboot  or kernel ) .

We are not using this flash for booting the uboot ( used for storing log
files in application side) 

So is there any modification required in code. 


With Best Regards 
Rajeesh.R | +91-9895842332 | rajeesr at cms.com |
Work is Worship Duty is God  

[U-Boot] at91rm9200dk -AT49BV642D flash

[Albert ARIBAUD]

Le 11/06/2010 12:53, rajeesh a ?crit :
>
> Hi all,
>
> We have at91rm9200dk board it is working with AT49BV642D now can we
> change flash to  AT49BV642DT
>
> without touching the source code.  (in uboot  or kernel ) .
>
> We are not using this flash for booting the uboot ( used for storing log
> files in application side)
>
> So is there any modification required in code.

If that Flash is not used by U-boot, then replacing it (or removing it 
altogether) will obviously not affect U-boot.

What would be affected is the application that U-boot will transfer 
control to, but that's outside the scope of this list.

Amicalement,
-- 
Albert.

[U-Boot] at91rm9200dk -AT49BV642D flash

[Wolfgang Denk]

Dear Albert ARIBAUD,

In message <4C121BA7.5070108@free.fr> you wrote:
>
> > So is there any modification required in code.
> 
> If that Flash is not used by U-boot, then replacing it (or removing it
> altogether) will obviously not affect U-boot.

This is not really correct.

On the DK you can boot from NOR flash, and then the flash is extremely
important for U-Boot.

But the only really critical thing is if the location and size of the
environment sector mtches; as far as I can see the default location
has it at offset 0x50000, i. e. already in the "big" 0x10000 uniformly
sized sectors.

So replacing the flashes with a top sector type should be uncritical,
indeed.

Best regards,

Wolfgang Denk

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