On 06/14/2016 02:55 AM, Jan Schermer wrote:
> Hi,
> I'm trying to buy AOM-TPM-9655V-S TPM module for my SuperMicro servers.
> The *-S variant is provisioned for Intel TXT for server chipsets/procs, 
> there's also *-C variant for i3/i5/i7 and Xeon E3 for workstations/clients.
> 
> My distributor doesn't seem to have them in stock and no ETA. But they have 
> lots of "AOM-TPM-9655V" (AKA unprovisioned).
> If I understand what that means is it lacks the indexes needed for Intel TXT 
> but also the nvLocked bit is set to 0 - which means all ACLs are off, which 
> is mildly disturing if people are using them in production...
> 
> There's something called "Intel Provisioning Utility" which executes in EFI 
> and "provisons" the TPM as *-S or *-C variant but I was not able to get it 
> yet, and sadly my distributor has never heard of it (doh).
> 
> Does anybody know whether this is something I can do using only tpm-tools? 
> Can I create all the needed indexes and set the nvLocked bit and get it 
> working properly? (= with TXT working)
> Or do I absolutely need this Intel utility because I does something magical 
> I'm not aware of?

Based on a document from 2010 it looks OEMs can get a TPM provisioning
tool for TXT from Intel:

https://downloadmirror.intel.com/18931/eng/Intel%20TXT%20LAB%20Handout.pdf
(section 3.1 on page 12)

It specifically mentions locking the NVRAM, and looks like there's
another tool for defining the NV indices.

I do know that tpm-tools allows for defining NVRAM indices and sizes,
but I do not know which indices/sizes TXT uses.

David

> 
> Thanks
> 
> Jan
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-- 
Thanks,
David Van Arnem
Development Engineer
Computer Measurement Laboratory

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