ARM System Developer's Guide

CHAPTER 13

MEMORY PROTECTION UNITS

13.1. PROTECTED REGIONS

13.1.1. Overlapping Regions

13.1.2. Background Regions

13.2. INITIALIZING THE MPU, CACHES, AND WRITE BUFFER

13.2.1. Defining Region Size and Location

13.2.2. Access Permission

13.2.3. Setting Region Cache and Write Buffer Attributes

13.2.4. Enabling Regions and the MPU

13.3. DEMONSTRATION OF AN MPU SYSTEM

13.3.1. System Requirements

13.3.2. Assigning Regions Using a Memory Map

13.3.3. Initializing the MPU

13.3.4. Initializing and Configuring a Region

13.3.5. Putting It All Together, Initializing the MPU

13.3.6. A Protected Context Switch

13.3.7. mpuSLOS

13.4. SUMMARY

Some embedded systems use a multitasking operating or control system and must ensure that a running task ...