Trenz Electronic GmbH Support Forum

Trenz Electronic Products => Trenz Electronic FPGA Modules => Topic started by: lbahler on August 18, 2021, 04:14:18 PM

Title: Can't read or write Efuse PL key on TE0720
Post by: lbahler 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.