Arm Zena CSS (RD-Aspen)

The Arm Zena CSS, also known as RD-Aspen introduces the concept of a high-performance Arm® Cortex®-A720AE Application Processor (Primary Compute) system augmented with an Arm® Cortex®-R82AE based Safety Island for scenarios where additional system safety monitoring is required. The system additionally includes a Runtime Security Engine (RSE) used for the secure boot of the system elements and the runtime Secure Services.

The Reference Software Stack implements the following Secure Partitions on top of the Trusted Services framework:

  • SE-Proxy

  • SMM Gateway

For more information, visit Arm Automotive Solutions documentation.


Copyright (c) 2025, Arm Limited and Contributors. All rights reserved.

SPDX-License-Identifier: BSD-3-Clause