Intel® Arria® 10 Hard Processor System Technical Reference Manual

ID 683711
Date 1/10/2023
Public

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7.2.1. TrustZone*

The Cortex*-A9 MPU subsystem has integrated TrustZone* technology, which provides a system solution to protect application platforms from malicious attack. The TrustZone* hardware and supporting software are designed to provide a strong security solution regardless of the operating environment. TrustZone* creates a separation between the secure and non-secure areas of the SoC and allows the designer to choose which assets in a design are designated as secure and non-secure.

TrustZone* security is implemented in the Cortex*-A9 MPU subsystem in three ways:

  • Hardware partitioning through the implementation of firewalls: Resources can be assigned and identified as secure or non-secure.
  • Virtual processor execution: Each core can context switch between secure and non-secure operation.
  • Secure debug control: Both secure and non-secure hardware debug exist and the type of debug allowed can be configured by the user.