MPAMF_PARTID_NRW_IDR, MPAM PARTID Narrowing ID register

The MPAMF_PARTID_NRW_IDR characteristics are:

Purpose

Indicates the largest internal PARTID for this MSC.

When FEAT_RME is implemented:

PARTID narrowing is global to the MSC and does not vary by resource instance.

Configuration

The power domain of MPAMF_PARTID_NRW_IDR is IMPLEMENTATION DEFINED.

This register is present only when FEAT_MPAM is implemented and MPAMF_IDR.HAS_PARTID_NRW == 1. Otherwise, direct accesses to MPAMF_PARTID_NRW_IDR are RES0.

The power and reset domain of each MSC component is specific to that component.

Attributes

MPAMF_PARTID_NRW_IDR is a 32-bit register.

Field descriptions

313029282726252423222120191817161514131211109876543210
RES0INTPARTID_MAX

Bits [31:16]

Reserved, RES0.

INTPARTID_MAX, bits [15:0]

The largest intPARTID supported in this MSC.

Accessing MPAMF_PARTID_NRW_IDR

This register is within the MPAM feature page memory frames. In a system that supports Secure, Non-secure, Root, and Realm memory maps, there must be MPAM feature pages in all four address maps.

MPAMF_PARTID_NRW_IDR is read-only.

MPAMF_PARTID_NRW_IDR must be readable from the Non-secure, Secure, Root, and Realm MPAM feature pages.

MPAMF_PARTID_NRW_IDR is permitted to have the same contents when read from the Secure, Non-secure, Root, and Realm MPAM feature pages unless the register contents are different for the different versions:

There must be separate registers in the Secure (MPAMF_PARTID_NRW_IDR_s), Non-secure (MPAMF_PARTID_NRW_IDR_ns), Root (MPAMF_PARTID_NRW_IDR_rt), and Realm (MPAMF_PARTID_NRW_IDR_rl) MPAM feature pages.

MPAMF_PARTID_NRW_IDR can be accessed through the memory-mapped interfaces:

ComponentFrameOffsetInstance
MPAMMPAMF_BASE_s0x0050MPAMF_PARTID_NRW_IDR_s

Accesses on this interface are RO.

ComponentFrameOffsetInstance
MPAMMPAMF_BASE_ns0x0050MPAMF_PARTID_NRW_IDR_ns

Accesses on this interface are RO.

ComponentFrameOffsetInstance
MPAMMPAMF_BASE_rt0x0050MPAMF_PARTID_NRW_IDR_rt

When FEAT_RME is implemented access on this interface are RO.

ComponentFrameOffsetInstance
MPAMMPAMF_BASE_rl0x0050MPAMF_PARTID_NRW_IDR_rl

When FEAT_RME is implemented access on this interface are RO.


30/06/2021 09:39; 4f5dd962f4e34e1ac282f76da4d6e7fc4cab087e

Copyright © 2010-2021 Arm Limited or its affiliates. All rights reserved. This document is Non-Confidential.