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MPAMF_CPOR_IDR, MPAM Features Cache Portion Partitioning ID register

The MPAMF_CPOR_IDR characteristics are:

Purpose

The MPAMF_CPOR_IDR is a 32-bit read-only register that indicates the number of bits in MPAMCFG_CPBM for this MSC. MPAMF_CPOR_IDR_s indicates the number of bits in the Secure instance of MPAMCFG_CPBM. MPAMF_CPOR_IDR_ns indicates the number of bits in the Non-secure instance of MPAMCFG_CPBM.

Configuration

The power domain of MPAMF_CPOR_IDR is IMPLEMENTATION DEFINED.

This register is present only when MPAMF_IDR.HAS_CPOR == 1. Otherwise, direct accesses to MPAMF_CPOR_IDR are RES0.

Attributes

MPAMF_CPOR_IDR is a 32-bit register.

Field descriptions

The MPAMF_CPOR_IDR bit assignments are:

313029282726252423222120191817161514131211109876543210
RES0CPBM_WD

Bits [31:16]

Reserved, RES0.

CPBM_WD, bits [15:0]

Number of bits in the cache portion partitioning bit map of this device. See MPAMCFG_CPBM.

This field must contain a value from 1 to 32768, inclusive. Values greater than 32 require a group of 32-bit registers to access the CPBM, up to 1024 if CPBM_WD is the largest value.

Accessing the MPAMF_CPOR_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_CPOR_IDR is read-only.

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

MPAMF_CPOR_IDR is permitted to have the same contents when read from either the Secure and Non-secure MPAM feature pages unless the register contents is different for Secure and Non-secure versions, when there must be separate registers in the Secure (MPAMF_CPOR_IDR_s) and Non-secure (MPAMF_CPOR_IDR_ns) MPAM feature pages.

MPAMF_CPOR_IDR can be accessed through the memory-mapped interfaces:

ComponentFrameOffsetInstance
MPAMMPAMF_BASE_s0x0030MPAMF_CPOR_IDR_s

Accesses on this interface are RO.

ComponentFrameOffsetInstance
MPAMMPAMF_BASE_ns0x0030MPAMF_CPOR_IDR_ns

Accesses on this interface are RO.



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