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MPAMCFG_DIS, MPAM Partition Configuration Disable Register

The MPAMCFG_DIS characteristics are:

Purpose

Disables a PARTID configuration as set in other MPAMCFG registers.

MPAMCFG_DIS_s disables a Secure PARTID. MPAMCFG_DIS_ns disables a Non-secure PARTID.

Configuration

The power domain of MPAMCFG_DIS is IMPLEMENTATION DEFINED.

This register is present only when (FEAT_MPAMv0p1 is implemented or FEAT_MPAMv1p1 is implemented) and MPAMF_IDR.HAS_ENDIS == 1. Otherwise, direct accesses to MPAMCFG_DIS are RES0.

Attributes

MPAMCFG_DIS is a 32-bit register.

Field descriptions

313029282726252423222120191817161514131211109876543210
NFURES0PARTID

NFU, bit [31]

No Future Use.

NFUMeaning
0b0

Control settings of the disabled PARTID must be retained.

0b1

Control settings of the disabled PARTID may take an UNKNOWN value.

Bits [30:16]

Reserved, RES0.

PARTID, bits [15:0]

Selects the PARTID to disable.

Accessing MPAMCFG_DIS

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.

MPAMCFG_DIS_s must be accessible from the Secure MPAM feature page. MPAMCFG_DIS_ns must be accessible from the Non-secure MPAM feature page.

MPAMCFG_DIS_s and MPAMCFG_DIS_ns must be separate registers. The Secure instance (MPAMCFG_DIS_s) accesses the PARTID disable used for Secure PARTIDs, and the Non-secure instance (MPAMCFG_DIS_ns) accesses the PARTID disable used for Non-secure PARTIDs.

When RIS is implemented, loads and stores to MPAMCFG_DIS access the PARTID disable configuration settings for the PARTID disable resource instance selected by MPAMCFG_PART_SEL.RIS and the PARTID selected by MPAMCFG_PART_SEL.PARTID_SEL.

When RIS is not implemented, loads and stores to MPAMCFG_DIS access the PARTID disable configuration settings for the PARTID selected by MPAMCFG_PART_SEL.PARTID_SEL.

When PARTID narrowing is implemented, loads and stores to MPAMCFG_DIS access the PARTID disable configuration settings for the internal PARTID selected by MPAMCFG_PART_SEL.PARTID_SEL, and MPAMCFG_PART_SEL.INTERNAL must be 1.

When PARTID narrowing is not implemented, loads and stores to MPAMCFG_DIS access the PARTID disable configuration settings for the request PARTID selected by MPAMCFG_PART_SEL.PARTID_SEL, and MPAMCFG_PART_SEL.INTERNAL must be 0.

MPAMCFG_DIS can be accessed through the memory-mapped interfaces:

ComponentFrameOffsetInstance
MPAMMPAMF_BASE_s0x0310MPAMCFG_DIS_s

Accesses on this interface are WO/RAZ.

ComponentFrameOffsetInstance
MPAMMPAMF_BASE_ns0x0310MPAMCFG_DIS_ns

Accesses on this interface are WO/RAZ.


30/09/2021 15:34; 092b4e1bbfbb45a293b198f9330c5f529ead2b0f

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