AMDEVAFF1, Activity Monitors Device Affinity Register 1

The AMDEVAFF1 characteristics are:

Purpose

Copy of the high half of the PE MPIDR_EL1 register that allows a debugger to determine which PE in a multiprocessor system the AMU component relates to.

Configuration

It is IMPLEMENTATION DEFINED whether AMDEVAFF1 is implemented in the Core power domain or in the Debug power domain.

This register is present only when FEAT_AMUv1 is implemented, FEAT_AMU_EXT32 is implemented and an implementation implements AMDEVAFF1. Otherwise, direct accesses to AMDEVAFF1 are RES0.

Attributes

AMDEVAFF1 is a 32-bit register.

This register is part of the AMU block.

Field descriptions

313029282726252423222120191817161514131211109876543210
MPIDR_EL1hi

MPIDR_EL1hi, bits [31:0]

MPIDR_EL1 high half. Read-only copy of the high half of MPIDR_EL1, as seen from the highest implemented Exception level.

Accessing AMDEVAFF1

Accesses to this register use the following encodings:

Accessible at offset 0xFAC from AMU

Accesses on this interface are RO.


26/03/2024 09:49; 67c0ae5282a7629ba0ea0ba7267b43cd4f7939f6

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