OP-TEE: Pseudo TAs
2024-11-7
| 2025-1-12
本文字數 163閱讀時長≈ 1 分鐘
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Published
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Nov 7, 2024
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OP-TEE Pseudo TAs 的 codes trace 筆記。
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OP-TEE
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Security
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The code is based on: https://gitlab.com/riseproject/riscv-optee/optee_os/-/tree/dev-optee-mpxy Commit ID: 75df9ba41a404aec897399ead0ff0aebcbff48ca
  • tee_ta_init_pseudo_ta_session()
    • Look up the pseudo TA based on UUID.
    • Create pseudo TA context for the UUID, assign ctx->ts_ctx.ops to pseudo_ta_ops. pseudo_ta_ops will be the global callbacks for the pseudo TAs:
    • pseudo_ta_enter_open_session()
      • Call stc->pseudo_ta->open_session_entry_point() callback, if defined.
        • E.g. If the opened session is for pseudo TA: rtc.pta, open_session_entry_point() callback is: open_session():
      • pseudo_ta_enter_invoke_cmd()
        • Call stc->pseudo_ta->invoke_command_entry_point() callback.
          • E.g. If the opened session is for pseudo TA: device.pta, invoke_command_entry_point() callback is: invoke_command(), which will call get_devices() to retrieve the UUIDs of the pseudo TAs:
        Security
      • OP-TEE
        • OP-TEE: User TAsOP-TEE: TAs
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        目錄