[Cryptech Tech] name, type and version in cores

[Joachim Strömbergson]

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Aloha!

FYI. In the cores there will be four 32-bit words read accessible via
the API that extracts compile/build time constansts that identify a
core. These four words are always at the first addresses of a given core.

The purpose of these constants is to allow SW to check which features
are present in the hardware by simply read the first words in a given
address space. (If we divide the cores into fixed size address spaces it
will be easy to do.)

The constants are basically a representation of
core name: 64 bits
core type: 32 bits (for example high speed vs compact."
core version: 32 bits

The bits are used as 8-bit ascii strings. For example the SHA-256 core
currently has:
Addr 0: "SHA2" (name0)
Addr 1: "256"  (name1)
Addr 2: "   "
Addr 3: "0.01"

One thing I consider is how to handle muliple instances. If we have two
uarts do we want them to annouce a unique ID themselves?

- -- 
Med vänlig hälsning, Yours

Joachim Strömbergson - Alltid i harmonisk svängning.
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 Joachim Strömbergson          Secworks AB          joachim at secworks.se
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