On Tue, Jul 27, 2021 at 01:30:04AM +0100, Andre Przywara wrote:

Now thinking about this, there would probably be some value in making
the TRNG UUID somehow available, as this can be used to identify flawed
implementations (general problems in the hardware or backend bugs). But
this should be some query-able interface, rather than some line in
dmesg. Any ideas? Might be beyond the scope of this series, though...

I guess you could append it to the name (eg, "SMCCC TRNG ${UUID}")
though it'd be a bit of an eyesore if anyone displays that in UIs much?

A separate version string queryable in parallel with name would be more
work but possibly a bit more sensible, some other hardware entropy
sources will have firmware version numbers or similar they could
usefully report I expect.