Chapter 7: TrustZone support in the memory system

Abstract

This chapter explains how the TrustZone security extension is supported by a number of memory system features. It covers the classification of memory types from security point of view, how the memory space is partitioned into Secure and Non-secure ranges, and how software can handle pointer checks using the memory system features available in the Armv8-M architecture.

Keywords

TrustZone; Secure Gateway; Non-secure callable; Security Attribution Unit (SAU); Implementation Defined Attribution Unit (IDAU); Test Target; Memory Protection Controller (MPC); Peripheral Protection Controller (PPC); Region ID

7.1: Overview

7.1.1: About this chapter

The last chapter covered the ...

Get Definitive Guide to Arm Cortex-M23 and Cortex-M33 Processors now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.