[SOLVED] Secure JTAG (NXP RT1051, SJC mode 2)

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  • [SOLVED] Secure JTAG (NXP RT1051, SJC mode 2)

    We are trying to implement Challenge/Response Mechanism using Segger J-Link and VisualGDB on i.MX-RT1051
    This mechanism is used to lock JTAG interface in manufacturing process to increase security of system. Authorized re-activation of JTAG interface possible in field-returned devices.
    Description: nxp.com/docs/en/application-note/AN4686.pdf

    NXP recommends Lauterbach TRACE32 debug tool. Segger J-Link is not supported yet.
    Mechanism is very simple, and described in 2.1.2 Debug flow when Secure JTAG mode is enabled (see application note above).

    Our question: how we can implement such Challenge/Response Mechanism using Segger J-Link?
  • Hello,

    Thank you for your inquiry.
    We noticed that the J-Link you registered with is still in support period. In that case we recommend opening a support ticket for further information as this forum is no official support channel.
    Generally your task sounds solvable via a JLinkScript file.
    More information can be found in the J-Link user manual UM08001.

    Best regards,
    Please read the forum rules before posting: Forum Rules

    Keep in mind, this is not a support forum. Its main purpose is user to user interaction.
    Our engineers will try to answer your questions between their projects if possible but this can be delayed by longer periods of time.
    Should you be entitled to support you can contact us via our support system: segger.com/ticket/

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