Enabling fTPM on i.MX8 Plus: TPM Not Detected in OS

[Premnath]

Hi,

I have taken reference source code from NXP. I have two quires regarding the reference source. 

Unable to Turn on BitLocker:

I have built the default reference code with the secure profile enabled. After booting to Windows OS and trying to turn on BitLocker, we are unable to enable it. Can you tell us what we might be missing?

TPM Not Detected in OS:

I am trying to enable the fTPM feature in i.MX8 Plus with our customized TCG module. With the reference code, I have successfully ported our TCG2 module, i.e., added fTPM and AuthVar TA binaries, and added OP-TEE based functionalities for Tpm2RequestUseTpm, Tpm2SubmitCommand, and Tpm2RelinquishUseTpm.

With this porting, we are able to see TPM device details in our BIOS setup screen, and the functionality works fine.

However, when we boot to the Windows OS and try the “tpm.msc” command, we get the message “Compatible TPM cannot be found.”

We have done UEFI level porting properly. Do we need to do any other porting to see TPM device details in the OS?

Thanks

Premnath

[Premnath]

Hi Team,
Any update on this question??

Thanks
Premnath