The APU GIC includes most of the same features as in the RPU GIC with the addition of security and virtualization:
•GICv2 programming model.
•Security extensions.
•Virtualization extensions.
•Interrupt groups:
°Group 0 interrupts cause either IRQ or IFQ signaling.
°Group 1 interrupts use IRQ signaling.
°Unified scheme to handle priority.
°Optional register lockdown on some group 0 interrupts.
•CPU private registers have restricted accessed on the AXI interconnect.