Cypress Semiconductor Corp. has made available its Platform Security Architecture (PSA) Trusted Firmware-M reference example from Arm® for its PSoC® 6 microcontrollers (MCUs), enabling a solution that adheres to the highest level of protection as defined by PSA. By leveraging PSA’s holistic set of threat models, security analyses, hardware and firmware architecture specifications, and Trusted Firmware-M reference implementation, Internet of Things (IoT) designers can quickly and easily implement secure designs with PSoC 6 MCUs.
“Connected devices are being deployed at a rapid pace, and to truly realize the benefits of these technologies, security cannot be optional,” said Paul Williamson, vice president and general manager, IoT Device IP Line of Business, Arm. “Enabling secure MCU development across the breadth of IoT applications is a shared industry responsibility, and Cypress’ PSoC 6 MCUs will further extend the benefits of PSA to our ecosystem.”
“As a direct result of the security features built into PSoC 6 MCUs and our collaboration with Arm, we have been able to quickly offer support for Trusted Firmware-M,” said Sudhir Gopalswamy, senior vice president of the Microcontrollers and Connectivity Division at Cypress. “We’re excited to offer designers a secure solution that is ultra-low power, flexible and adheres to PSA principles.”
Cypress’ PSoC 6 MCUs achieve the highest level of protection defined by the PSA using dual Arm Cortex®-M cores combined with configurable memory and peripheral protection units. The MCUs provide three levels of hardware-based isolation: 1) an isolated execution environment for trusted applications using a dedicated Arm Cortex®-M0+ core, 2) secure element functionality that hosts root of trust operations and system services, and 3) isolation for each trusted application. These three levels of isolation together reduce the attack surface for threats. The system is augmented with a true random number generator (TRNG) and cryptographic accelerators, while the Cortex-M4 core in the PSoC 6 MCU architecture delivers a clean programming model for the rich execution environment for unsecure applications.
Aligned with Arm’s current version for v8-M, the Trusted Firmware-M reference example for PSoC 6 MCUs allows designers to:
Easily implement hardware-based isolation between secure and unsecure execution environments via configuration of the protection units
Utilize Mbed OS secure services.
Future versions will include trusted boot with multiple images and full PSA API support, including Root of Trust installation with secure element functionality.
The PSoC 6 MCU Trusted Firmware-M will be available in March 2018.
About PSoC 6 MCUs
PSoC 6 is the industry’s lowest power, most flexible MCU with built-in Bluetooth Low Energy wireless connectivity and integrated hardware-based security in a single device. Software-defined peripherals can be used to create custom analog front-ends (AFEs) or digital interfaces for innovative system components such as electronic-ink displays. The architecture offers flexible wireless connectivity options, including fully integrated Bluetooth Low Energy (BLE) 5.0. The PSoC 6 MCU architecture features the latest generation of Cypress’ industry-leading CapSense® capacitive-sensing technology, enabling modern touch and gesture-based interfaces that are robust and reliable. The architecture is supported by Cypress’ PSoC Creator™ Integrated Design Environment (IDE) and the expansive Arm ecosystem.