[MinnowBoard] PTT support

Philip Tricca flihp at twobit.us
Mon Jun 29 17:05:07 UTC 2015

On 06/27/2015 10:08 PM, Zathros wrote:
> Looks like PTT is available in the 0.8 firmware release for minnowboard
> max, and it can be enabled in the setup screen... is there any
> documentation about how to use this once enabled?

TPM2 is still pretty new. I don't know that you'll ever see docs
specific to the PTT TPM2 implementation but support for the baseline
TPM2 commands went into the Linux kernel in the 3.20 security subsystem
patch set. Some useful links:


> I tried Fedora and Ubuntu, and neither automatically recognizes a tpm, as
> far as I can tell. I'm interested in playing with it, but not sure where to
> look to get started.

I don't know the status of current TPM2 driers off the top of my head
but Jarkko Sakkinen is keeping his linux-tpm2 branch on github:
https://github.com/jsakkine/linux-tpm2. He has a branch that looks relevant.

If you do manage to get a TPM2 driver loaded there aren't any userspace
tools yet AFAIK. Still, just getting the driver loaded would be
interesting and I'd be interested to hear about your progress.

Good luck,


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