7. Glossary

This glossary provides definitions for terms and abbreviations used in the Hafnium documentation.

You can find additional definitions in the Arm Glossary.

AArch32: 32-bit execution state of the ARMv8 ISA
AArch64: 64-bit execution state of the ARMv8 ISA
BTI: Branch Target Identification. An Armv8.5 extension providing additional control flow integrity around indirect branches and their targets.
CoT: Chain of Trust
DMA: Direct Memory Access
DS-5: Arm Development Studio 5
DT: Device Tree
DTB: Device Tree Blob
DTS: Device Tree Source
EC: Execution Context
EL: Exception Level
FCONF: Firmware Configuration Framework
FDT: Flattened Device Tree
FF-A: Firmware Framework for Arm A-profile
FIP: Firmware Image Package
FVP: Fixed Virtual Platform
GIC: Generic Interrupt Controller
IPA: Intermediate Physical Address
ISA: Instruction Set Architecture
JOP: Jump-Oriented Programming
LSP: A logical secure partition managed by SPM
MMU: Memory Management Unit
MPIDR: Multiprocessor Affinity Register
MTE: Memory Tagging Extension. An optional Armv8.5 extension that enables hardware-assisted memory tagging.
NWd: Normal World
ODM: Original Design Manufacturer
OEM: Original Equipment Manufacturer
OEN: Owning Entity Number
PA: Physical Address
PAUTH: Pointer Authentication. An optional extension introduced in Armv8.3.
PE: Processing Element
PM: Power Management
PSCI: Power State Coordination Interface
PVM: Primary Virtual Machine
RAS: Reliability, Availability, and Serviceability extensions. A mandatory extension for the Armv8.2 architecture and later. An optional extension to the base Armv8 architecture.
ROP: Return-Oriented Programming
ROT: Root of Trust
SEA: Synchronous External Abort
SiP: Silicon Provider
SMC: Secure Monitor Call
SMCCC: SMC Calling Convention
SoC: System on Chip
SP: Secure Partition
SPD: Secure Payload Dispatcher
SPM: Secure Partition Manager
SPMC: Secure Partition Manager Core
SPMD: Secure Partition Manager Dispatcher
SVE: Scalable Vector Extension
SWd: Secure World
TBB: Trusted Board Boot
TBBR: Trusted Board Boot Requirements
TCB: Trusted Compute Base
TEE: Trusted Execution Environment
TF-A: Trusted Firmware-A
TLB: Translation Lookaside Buffer
TZC: TrustZone Controller