[Cryptech Tech] Suggested changes to TRNG

[Rob Austein]

At Tue, 29 Sep 2015 18:00:57 +0200, Joachim Strömbergson wrote:
...
> Comments, ideas, screams and suggestions on these ideas greatly appreciated.

The PRNG makes me a bit nervous.  I can see the arguments, but I can
also see arguments for letting the user decide to exclude it.  Which
brings me to the suggestion:

It would be nice if there were some way other than patching or manual
editing of trng.v for the build configuration tool to control which
entropy sources are included.  If this means that the configuration
tool has to generate the TRNG's internal MUX, so be it.  If we can do
it just by having the build configuration file generate a file of
`defines which trng.v `includes, that's OK too.