Safe and secure virtualization for embedded microcontrollers

January 11, 2021 //By Jean-Pierre Joosting
Safe and secure virtualization for embedded microcontrollers with µ-visor
First implementation of µ-visor available on Renesas RH850/U2A MCU provides the essential foundation for ECU consolidation in automotive designs.

Green Hills Software has announced the release of µ-visor™, its safe and secure embedded virtualization hypervisor, for the Renesas RH850/U2A microcontroller (MCU). Designed to support the emerging automotive cybersecurity requirements of ISO/SAE 21434 and UNECE WP.29 and to meet ISO 26262 ASIL D functional safety, µ-visor for MCUs expands Green Hills leadership in safe and secure virtualization technology and its product line. µ-visor joins the proven, broadly deployed INTEGRITY Multivisor® virtualization for application processors already used in tens of millions of commercial vehicles worldwide.

The basis for safe and secure consolidation of multiple MCU-based systems onto a single multicore RH850/U2A design, µ-visor enables savings in cost, size, and power for the resulting consolidated system, while at the same time simplifying the safety design of the system. By employing the advanced hardware-based assisted virtualization capabilities of the RH850/U2A, µ-visor allows multiple virtual machines to run simultaneously, supporting a variety of scheduling and core management strategies to meet various automotive uses cases and to ensure extremely low overhead.

The Green Hills MULTI® integrated development environment (IDE) and related ISO 26262 ASIL D-certified tools provide developers with tightly integrated tools that deliver unprecedented visibility into system performance and runtime behaviour, enabling rapid integration and optimization of multiple workloads onto a single RH850/U2A MCU. Further, µ-visor can host a variety of operating systems, including AUTOSAR environments from third-party vendors, Green Hills Software’s own µ-velOSity™ operating system, customer in-house operating systems, or micro-executive designs, giving customers a great deal of flexibility on how to design consolidation for their automotive controller use cases, including support for ECU safety islands.


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