MPAMF_IMPL_IDR, MPAM Implementation-Specific Partitioning Feature Identification Register

The MPAMF_IMPL_IDR characteristics are:

Purpose

Indicates the implementation-defined partitioning and monitoring features and parameters of the MSC.

MPAMF_IMPL_IDR_s indicates IMPLEMENTATION DEFINED partitioning and monitoring features accessed from the Secure MPAM feature page. MPAMF_IMPL_IDR_ns indicates those accessed from the Non-secure MPAM feature page.

If MPAMF_IDR.HAS_RIS is 1, this register gives the implementation-specific features and parameters of the resource instance selected by MPAMCFG_PART_SEL.RIS for any features that are specific to the resource.

Configuration

The power domain of MPAMF_IMPL_IDR is IMPLEMENTATION DEFINED.

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

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

Attributes

MPAMF_IMPL_IDR is a 32-bit register.

Field descriptions

313029282726252423222120191817161514131211109876543210
IMPLFEAT

IMPLFEAT, bits [31:0]

All 32 bits of this register are available to be used as the implementer sees fit to indicate the presence of IMPLEMENTATION DEFINED MPAM features in this MSC and to give additional implementation-specific read-only information about the parameters of implementation-specific MPAM features to software.

If RIS is implemented, this register indicates the implementation-specific features and parameters of the resource instance selected by MPAMCFG_PART_SEL.RIS.

Accessing MPAMF_IMPL_IDR

This register is within the MPAM feature page memory frames. In a system that supports Secure and Non-secure memory maps, there must be both Secure and Non-secure MPAM feature pages.

MPAMF_IMPL_IDR is read-only.

MPAMF_IMPL_IDR must be readable from the Non-secure and Secure MPAM feature pages.

MPAMF_IMPL_IDR is permitted to have the same contents when read from the Secure or Non-secure MPAM feature pages unless the register contents are different for the different versions, when MPAMF_IMPL_IDR_s is permitted to have either the same or different contents to MPAMF_IMPL_IDR_ns.

There must be separate registers in the Secure (MPAMF_IMPL_IDR_s) and Non-secure (MPAMF_IMPL_IDR_ns) MPAM feature pages.

When MPAMF_IDR.HAS_RIS is 1, MPAMF_IMPL_IDR shows the configuration of implementation-specific features for the resource instance selected by MPAMCFG_PART_SEL.RIS. Fields that mention RIS in their field descriptions have values that track the implemented properties of the resource instance. Fields that do not mention RIS are constant across all resource instances.

MPAMF_IMPL_IDR can be accessed through the memory-mapped interfaces:

ComponentFrameOffsetInstance
MPAMMPAMF_BASE_s0x0028MPAMF_IMPL_IDR_s

Accesses on this interface are RO.

ComponentFrameOffsetInstance
MPAMMPAMF_BASE_ns0x0028MPAMF_IMPL_IDR_ns

Accesses on this interface are RO.


20/09/2021 11:02; d4a233ffbdfb36e47856c443a7ce9a85f5e501ca

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