The MPAMCFG_CPBM characteristics are:
The MPAMCFG_CPBM register is a read-write register that configures the cache portions that a PARTID is allowed to allocate. After setting MPAMCFG_PART_SEL with a PARTID, software (usually a hypervisor) writes to the MPAMCFG_CPBM register to configure which cache portions the PARTID is allowed to allocate.
The power domain of MPAMCFG_CPBM is IMPLEMENTATION DEFINED.
This register is present only when MPAMF_IDR.HAS_CPOR == 1. Otherwise, direct accesses to MPAMCFG_CPBM are IMPLEMENTATION DEFINED.
MPAMCFG_CPBM is a 32768-bit register.
The MPAMCFG_CPBM bit assignments are:
Each bit, CPBM<n>, grants permission to the PARTID to allocate cache lines within cache portion n.
CPBM<n> | Meaning |
---|---|
0b0 |
The PARTID is not permitted to allocate into cache portion n. |
0b1 |
The PARTID is permitted to allocate within cache portion n. |
The number of bits in the cache portion partitioning bit map of this component is given in MPAMF_CPOR_IDR.CPBM_WD. CPBM_WD contains a value from 1 to 215, inclusive. Values of CPBM_WD greater than 32 require a group of 32-bit registers to access the CPBM, up to 1024 registers.
Bits CPBM<n>, where n is greater than CPBM_WD, are not required to be implemented.
This register is part of the MPAMF_BASE memory frame. In a system that supports Secure and Non-secure memory maps, the MPAMF_BASE frame must be accessible in both Secure and Non-secure memory address maps.
MPAMCFG_CPBM must be accessible from the Non-secure and Secure address maps.
MPAMCFG_CPBM must be banked for the Secure and Non-secure address maps. The Secure instance accesses the cache portion bitmaps used for Secure PARTIDs, and the Non-secure instance accesses the cache portion bitmaps used for Non-secure PARTIDs.
Component | Frame | Offset | Instance |
---|---|---|---|
MPAM.any | MPAMF_BASE_s | 0x1000 | MPAMCFG_CPBM_s |
Access on this interface is RW.
Component | Frame | Offset | Instance |
---|---|---|---|
MPAM.any | MPAMF_BASE_ns | 0x1000 | MPAMCFG_CPBM_ns |
Access on this interface is RW.
13/12/2018 16:42; 6379d01c197f1d40720d32d0f84c419c9187c009
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