B4.1 CPU interface registers

Each CPU interface block provides the interface for the Cortex®‑A76 core that interfaces with a GIC distributor within the system.

The Cortex‑A76 core only supports system register access to the GIC CPU interface registers. The following table lists the three types of GIC CPU interface system registers supported in the Cortex‑A76 core.

Table B4-1 GIC CPU interface system register types supported in the Cortex‑A76 core.

Register prefix Register type
ICC Physical GIC CPU interface system registers.
ICV Virtual GIC CPU interface system registers.
ICH Virtual interface control system registers.

Access to virtual GIC CPU interface system registers is only possible at Non-secure EL1.

Access to ICC registers or the equivalent ICV registers is determined by HCR_EL2. See B2.57 HCR_EL2, Hypervisor Configuration Register, EL2.

For more information on the CPU interface, see the Arm® Generic Interrupt Controller Architecture Specification.

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