AN 759: Using Secure Boot in Intel® Arria® 10 SoC Devices

ID 683060
Date 3/29/2021
Document Table of Contents

Third and Fourth Stages

If the stages following the second-stage boot loader need to be trusted, then you must implement features to support authentication in the third and fourth stage.

During the third boot stage, an operating system (OS) or stand alone application, such as Bare Metal, typically loads from flash storage into memory. During the fourth boot stage, the OS commonly launches secure user level applications.