Re: RE: cfi 0001

["Tomas E" <tomas2003@home.se>]

Hi, 

>Tomas,
> First you should tell us a bit more about your board reset.
>Just confirm if the warm-reset is linked to the reset pin of strata NOR.

The at91rm9200 has a built in hardware watchdog which has no external 
pin to make use of for a reset of the flash.

The flash is the intel strata 28F640 (rev C)



>CFI command sequences can put the NOR flash into a >state(e.g. in
>buffered write) where the flash contents are not >visible. If the CPU
>resets in the middle of this process and the NOR flash >is not reset back
>to the reset state, and the first instruction is being >executed from
>NOR, then you might face a state where even your >bootloader does not

Yes, I think this is the case but every time I ioremap the flash
0080 show up. I only write a small file but I could never see the
0080 go away. 

I expected the flash to become in a readable state
after a while when the write operation was done.


>work - this is not a fault of the driver or the flash, 
>rather is a problem with the board's signal routing as such.

Yes this is a problem as well. As long as there is no external reset
of the flash there is no 100% garantee but I would like to
minimize the problem.

>
>Regards,
>Nishanth Menon

Tomas