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AMAIR_EL2 provides IMPLEMENTATION DEFINED memory attributes for the memory regions specified by MAIR_EL2. This register is not used in the Cortex®-A55 core.
AMAIR_EL2 is a 64-bit register, and is part of:
AArch64 System register AMAIR_EL2 bits [31:0] are architecturally mapped to AArch32 System register HAMAIR0. See B1.52 HAMAIR0, Hyp Auxiliary Memory Attribute Indirection Register 0.
AArch64 System register AMAIR_EL2 bits [63:32] are architecturally mapped to AArch32 System register HAMAIR1. See B1.53 HAMAIR1, Hyp Auxiliary Memory Attribute Indirection Register 1.
Bit fields and details that are not provided in this description are architecturally defined. See the Arm® Architecture Reference Manual Armv8, for Armv8-A architecture profile.