Enabling Sound Open Firmware on Arm® Cortex®-a Based Devices Using Zephyr RTOS - Daniel Baluta, NXP

Enabling Sound Open Firmware on Arm® Cortex®-a Based Devices Using Zephyr RTOS - Daniel Baluta, NXP
Sound Open Firmware is an open source audio DSP firmware that provides firmware source code, tools, and debug capabilities to enable developers to add more value and customization to their projects. While initially developed on the Cadence® Tensilica® HiFi 4 DSP, the firmware has a modular and generic codebase that can be ported to different architectures. This presentation will focus on how to move this code to newer Cortex-A devices that don’t incorporate a separate DSP. The task starts with using Jailhouse hypervisor to reserve the Arm Cortex-A core to run the Sound Open Firmware as an application inside Zephyr RTOS. This presentation will detail the general solution involving running Linux OS and Zephyr RTOS on separate ARM® Cortex- A cores with the help of Jailhouse hypervisor. The presentation will focus on the process of enabling Zephyr on a Cortex-A55 core, and then integrating Sound Open Firmware applications.