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  • What is TrustZone for ARMv8-M?

    As a product manager for the Cortex-M33, I see this question pop up a lot. Below is my version of the answer.

    Characteristics of TrustZone technology

    • TrustZone is the security foundation for billions of ARM Cortex-A processor-based systems
    • TrustZone…

  • A couple of use cases for TrustZone for ARMv8-M

    Root of Trust implementation – Connected devices with authentication requirements need a root of trust in the system architecture. This is particularly important for devices that can be updated over the air. In a system with TrustZone technology, code…

  • Link to download gcc support for TrustZone for ARMv8-M

    * All GCC 6 features, plus latest mainline features:
      + Full ARMv8-M support including atomics and Security Extensions
      + ARM PURECODE support for ARMv7-M and ARMv8-M Mainline
      + Co-processor intrinsics support
      + Cortex-M23 and Cortex-M33 support
      + -mthumb…

  • What is the top level difference in features between Cortex-M33 and Cortex-M4?

    This is a very common question.

    The diagram below is a pictorial description of the differences followed by some explanations.

    Cortex-M33 v Cortex-M4 features

    Starting from the bottom:

    • Cortex-M33 is an implementation of the ARMv8-M architecture. Full details are in my blog on the 5…

  • What is the top level difference in features between Cortex-M23 and Cortex-M0+?

    This is a very common question too.

    The diagram is a pictorial description of the differences followed by some explanations.

     

     

    Starting from the bottom:

     

    -Cortex-M23 is an implementation of the ARMv8-M architecture. Full details here.

    -Using the same debug…

  • [Cortex-M33 FVP]:SecureFault with SAU disable

    Hello,

    I am using Cortex-M33 FVP model to run the Keil RTX TrustZoneV8M RTOS example.
    Have also tried to experiment with the memory map configuration and the corresponding SAU region programming for NS/S patitioning and the behaviour is as expected.

    However…

  • Where will the various software components reside in a TrustZone for ARMv8-M solution?

    Where the system designer wants them to be, of course!

    There is no restriction on where the various software modules reside. As with all other Cortex-M processors, the system designer is at liberty to build the solution that has the best fit for the target…

  • How to use FreeRTOS Scheduler with trustZone ARMV8-M M33 ?

    I have a set of tasks in FreeRTOS and I need to put some of them in the secure world (Trustzone).

    Is there a communication to be established between the SMC trustZone side and the scheduler FreeRTOS side ?

    tracks please.

  • Extend the ARM Cortex-M33 with a custom co-processor

    two cores.png

    IoT refers to thousands of diverse market segments that are now using connected intelligent devices: from IoT nodes with rich user interfaces, to tiny sensors that are powered only by energy that is harvested from the environment. These small IoT nodes…

  • Five key features of the Arm Cortex-M33 Processor

    System-on-chip (SoC) solutions based on Arm Cortex processors address diverse embedded market segments, including: Internet of Things, motor control, healthcare, automotive, home automation, and many more, as you can see in this blog by Thomas Ensergueix…

  • New AMBA Specification Extends Security to Embedded Design: AMBA 5 AHB5

    The amount of data we generate is growing exponentially. Gartner has predicted that in 2015 the global mobile data traffic will be a total of 52 billion terabytes, an increase of 59 percent on 2014. It’s a staggering number that is driven not just by…