|Home > Register Descriptions > AArch64 system registers > ID_AA64PFR1_EL1, AArch64 Processor Feature Register 1, EL1|
The ID_AA64PFR1_EL1 provides additional information about implemented core features in AArch64.
ID_AA64PFR1_EL1 is a 64-bit register, and is part of the Identification registers functional group.
This register is Read Only.
There are no configuration notes.
Bit fields and details not provided in this description are architecturally defined. See the Arm® Architecture Reference Manual Armv8, for Armv8-A architecture profile.