Related information

Here are some resources related to material in this guide:

Arm Community (ask development questions, and find articles and blogs on specific topics from Arm experts)

Arm Cortex-A Series Programmer’s Guide for Armv8-A (a chapter on security in general, and a section that covers using interrupts to switch between Secure and Non-secure worlds)

Armv8-A Fundamentals guide (changing Exception levels and Security state)

Armv8-A Learn the Architecture series of guides

GICv3 and GICv4 Software Overview

Scatter files


Here is some information about the various registers that are referred to in this guide:

SCR_EL3, Secure Configuration Register

SCTLR_EL1, System Control Register (EL1)

ELR_EL3, Exception Link Register (EL3)

SPSR_EL3, Saved Program Status Register (EL3)

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