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CongoJack's avatar
CongoJack
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5 months ago

jtag secure mode (arria 10)

Is there an order in enabling security bits? Would enabling JTAG secure mode first lock me out from enabling any of the other security bits?

And is programming/verifying included in the list of jtag commands not permitted in secure mode?

3 Replies

  • JohnT_Altera's avatar
    JohnT_Altera
    Icon for Regular Contributor rankRegular Contributor

    Hi,


    Is there an order in enabling security bits? Would enabling JTAG secure

    mode first lock me out from enabling any of the other security bits?

    • Yes, the order can matter, depending on your device.Generally:
      • If you enable JTAG secure mode (or any security mode that restricts debug/programming access) before setting other security bits or configuring options, you may lock yourself out of making further changes via JTAG or other debug interfaces.
      • Best Practice: Set all desired configuration and security bits before enabling JTAG secure mode or any permanent lock.



    And is programming/verifying included in the list of jtag commands not

    permitted in secure mode?

    Yes.


    Thanks.


  • JohnT_Altera's avatar
    JohnT_Altera
    Icon for Regular Contributor rankRegular Contributor

    We do not receive any response from you to the previous question/reply/answer that I have provided. This thread will be transitioned to community support. If you have a new question, feel free to open a new thread to get the support from Intel experts. Otherwise, the community users will continue to help you on this thread. Thank you.


    • CongoJack's avatar
      CongoJack
      Icon for New Contributor rankNew Contributor
      Hi John, thank you for your answer. Is it possible to enable tamper protection after secure mode is enabled on the 20 nm arria 10?