MPU FIREWALL

Table of Contents

• Features Supported
• Features NOT Supported
• Important Usage Guidelines
• Example Usage
• API

MPU FIREWALL driver provides API to read different regions in all supported firewalls.

Features Supported

• API to read MPU Firewall regions, including region start address, size, attributes like access permissions and AID configurations
• APIs to read fault address, fault status and to get interrupt status for a mpu region.

Features NOT Supported

• Configuration of MPU firewall regions is not supported via this driver and is supported via HSM Services. For more information HSM Client SetFirewall Service.

Important Usage Guidelines

• None

Example Usage

Include the below file to access the APIs

#include <drivers/mpu_firewall.h>

Example to setup MPU Firewall regions is shown below,

 
    MPU_FIREWALL_RegionParams mpuParams;
 
    /* Initialize the MPU Param structure */
    MPU_FIREWALL_RegionParams_init(&mpuParams);
 
    /* Set the region parameters */
    mpuParams.id = 4;
    mpuParams.regionNumber = 0;
 
    /* Program the parameters for the region */
    MPU_FIREWALL_getRegion(&mpuParams);
 

API

APIs for MPU Firewall