_engineer Posted November 16, 2020 Share Posted November 16, 2020 Hi, I'm working on a project where I need to program the board using encrypted FSBL Boot Image. I have already described my issue in detail in Xilinx community forum: https://forums.xilinx.com/t5/ACAP-and-SoC-Boot-and/FSBL-not-loaded-from-QSPI-flash-after-encryption-switched-on/td-p/1173437 I prepared a working, but unencrypted solution. Now it looks like the Zybo Z7-20 Zynq is not a production silicon and I will not be able to finish the project. https://www.xilinx.com/support/answers/47565.html Can you confirm my suspectation? I have checked the XC7Z020 IDCODE and it is the version 2 (on our other Zybo boards it is the same), which should be affected by: https://www.xilinx.com/support/documentation/errata/en247.pdf Link to comment Share on other sites More sharing options...
_engineer Posted November 17, 2020 Author Share Posted November 17, 2020 Problem solved. Zybo is production silicon. It was all about to solder a battery to J15 on the Zybo board to get a known BBRAM state. Link to comment Share on other sites More sharing options...
JColvin Posted November 17, 2020 Share Posted November 17, 2020 Thank you for sharing what you found! Link to comment Share on other sites More sharing options...
schoechm Posted February 19, 2021 Share Posted February 19, 2021 Hello! I'm also trying to secure boot my Zybo Z7-20 and I think I have the same problem. Is there any way I can test/confirm this without directly having to solder? Link to comment Share on other sites More sharing options...
JColvin Posted February 19, 2021 Share Posted February 19, 2021 Hi @schoechm, What I would do to check (though I'm 99.9% positive that all of our Zybo Z7-20's use production silicon) would be to connect to the board in the Hardware Manager, select the Hardware Device Properties, and see what the first digit is in the IDCODE_HEX field. If it's a '2', then it is production silicon. You can learn more about how to determine this from AR#37579. Thanks, JColvin Link to comment Share on other sites More sharing options...
schoechm Posted February 20, 2021 Share Posted February 20, 2021 Thanks a lot! In that case, my device is also production silicon. @_engineermay I ask what kind of battery did you use? Link to comment Share on other sites More sharing options...
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_engineer
Hi,
I'm working on a project where I need to program the board using encrypted FSBL Boot Image. I have already described my issue in detail in Xilinx community forum: https://forums.xilinx.com/t5/ACAP-and-SoC-Boot-and/FSBL-not-loaded-from-QSPI-flash-after-encryption-switched-on/td-p/1173437
I prepared a working, but unencrypted solution. Now it looks like the Zybo Z7-20 Zynq is not a production silicon and I will not be able to finish the project.
https://www.xilinx.com/support/answers/47565.html
Can you confirm my suspectation?
I have checked the XC7Z020 IDCODE and it is the version 2 (on our other Zybo boards it is the same), which should be affected by:
https://www.xilinx.com/support/documentation/errata/en247.pdf
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