[Cryptech Tech] Alpha keystore flash always writeable

[Fredrik Thulin]

Hi

I was going to ask a question on the list, but as Randy have stressed we 
*really* need to get the Alpha train going so I'm not going to ask but rather 
just tell you. If anyone has really strong objections I'll absolutely consider 
them, of course.

The keystore memory (flash) connected to the ARM has a write-enabled pin. I 
will add a zero-ohm resistor to that net, but it will be always write-enabled. 

We could have had a discussion about whether it makes sense to have a jumper 
there too, or some other mechanism to control the ARMs possibility to write 
wrapped keys to persistent storage, but let's leave that for a later board.

/Fredrik
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