[En-Nut-Discussion] at91sam7x bloader

[Ole Reinhardt]

Hi,

> I would not do it that way too. The problem is security, if the 
> bootloader doesn't find an acceptable image or if some bit is not reset, 
> the next time it could revert to a previous image. If it is done online, 
> it can and up with an unuseable device...

Right. To prevent this an md5, or at minimum a crc32 check should be
done before flashing the code. As SAM7x does not have that much flash
(to store the new and a fallback image) the dataflash solution ist not
the best one, but the only I see at the moment.

Bye,

Ole

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