Intel® Stratix® 10 Hard Processor System Remote System Update User Guide

ID 683021
Date 2/23/2024
Document Table of Contents

5.2. Arm Trusted Firmware Support

The Arm Trusted Firmware (ATF) runs at the EL3, the highest execution level on Cortex*-A53. ATF is loaded as part of the boot process, and it remains resident.

ATF exports a SMC (Secure Monitor Call) handler which allows software running at lower execution levels to access services offered by the SDM such as FPGA configuration and RSU commands. Both U-Boot and Linux use the SMC handler.