Author Topic: Can't read or write Efuse PL key on TE0720  (Read 983 times)


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Can't read or write Efuse PL key on TE0720
« on: August 18, 2021, 04:14:18 PM »
I have followed the Xilinx doc, xapp1175, to set up authentication and encryption.  Authentication has been set properly and is mandatory.  I am able to flash images that apply RSA to the FSBL, and they work correctly.

Now I am trying to set up encryption.  This is not working.

I am unable even to read the Efuse PL key.  The error code indicates a JTag initialization problem.  There has been another post on this topic in this forum 3 years ago (TE0720 eFuse programming with TE0703 carrier board), and the person was able to resolve his problem by putting a sleep into one of the xilskey functions.  I have tried that without success.

Is there a Trenz reference project that addresses the programming of the EFuse PL key?  If not, is it possible to pay for customer support to get me through this?  I am completely stymied.