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Interrupt driven TrustZone application

Motorolasolutions

Hello,

I would like to know if a Trustzone application can be interrupt driven instead of being triggered by the non-secured world (scm).

Thanks,

Fabrice.

Parents
  • 0 in reply to Martin Weidmann

    Thanks for the answer.

    Actually I am using QC processors family (8960, 8974).

    So I believe that for my case I will have to load the secure app which will plug the secure interrupt (timer based).

    Then the non-secure will be interrupted as it was requested by the secure world right?

    Can you please tell me what document/keywords should I use to start implementing that?

    Also, you had some concern about the non-secure OS when secure Int is used. In our case the processors are multi-cores so apart from some performance degradation (where one core will be stuck by tz) there should not be a real problem. Agree?

Reply
  • 0 in reply to Martin Weidmann

    Thanks for the answer.

    Actually I am using QC processors family (8960, 8974).

    So I believe that for my case I will have to load the secure app which will plug the secure interrupt (timer based).

    Then the non-secure will be interrupted as it was requested by the secure world right?

    Can you please tell me what document/keywords should I use to start implementing that?

    Also, you had some concern about the non-secure OS when secure Int is used. In our case the processors are multi-cores so apart from some performance degradation (where one core will be stuck by tz) there should not be a real problem. Agree?

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