"The new generation for ARM Cortex-M23 and Cortex-M33, the first in the new family of ARMv8-M architecture, introduce optimized TrustZone security features into small devices. The CoreLink SSE-200 subsystem combines all of the latest ARM IP to provide a foundation for building a secure IoT node. Those new processors and subsystems make it easier for developers to create secure and energy efficient IoT solutions for the interconnected IoT world. This demo shows a secret code, changing randomly every 10 seconds, via a secure LCD peripheral. A switch, configured as a secure peripheral, allows to change debug authentication permissions to grant or deny access to the secure space via the debugger. The background of this demo shows the secure and non-secure code and memory partition, non-secure and secure code interaction via secure gateways, and the debug authentication feature of the processor to protect a secure space from the non authorized JTAG/debug access. The audience is going to learn about the CoreLink SSE-200 secure features and how to build secure applications on it. In addition, the audience is going to see in action how the secure code and memory is protected against the debugger."

1. ARMv8-M Secure Debug
The ARM® CoreLink™ SSE-200 subsystem
• ARM Cortex®-M33 processor
- ARMv8-M architecture
- TrustZone for ARMv8-M
• ARM CoreLink SIE-200
• Instruction caches with ARM TrustZone® support
• Power infrastructure components
• Secure Debug with ARM CoreSight SoC
• ARM TrustZone CryptoCell (option)
• ARM Cordio® Radio (option)
TrustZoneforARMv8-M…
Non-secureregion Secure region
Non -secure Code
- Blinks MCC LEDs
- Triggers secure function every 500ms
JTAG/Debug
Secure boot code
- System initialization
- SAU / MPC / PPCconfig
Secure function
- Refreshes secure code and LCD every 10 seconds
- Checks switch status to updatedbg authorization
- Blinks RGB LEDs
Secure Memory
Secure code
Non-securePeripherals
MCC LEDs
Secure
Peripherals
GLCD
Switch
Shield LCD
RGB LEDs
Non -secure Memory
NS Branch(BXNS)
Secure regions
Non-secure regions
Secure
Gateway
DBGCTRL
Further information:
https://community.arm.com https://developer.arm.com