[U-Boot-Users] General Flash Programming Error

[CG]

Hello,

I got this error when I execute "cp.b 20000000 10000000 X".  X = # of bytes
to copy

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results : >
Copy to Flash... General Flash Programming Error
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It's a custom board based on the at91rm9200-dk.

I can execute flinfo, erase sectors, display memory "md 10000000".

Any hints to see if my flash works well for programming with u-boot...

The flash chip is AT49BV162A

Regards

Christian