5. Glossary

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

AArch32: 32-bit execution state of the Arm A-profile architecture
AArch64: 64-bit execution state of the Arm A-profile architecture
ACPI: Advanced Configuration and Power Interface
AP: Application Processor
Blob List: Bloblist is an U-boot implementation of the Firmware Handoff protocol
DT: Device Tree
FDT: Flattened Device Tree
FF-A: Firmware Framework for Arm A-profile
HOB: Hand-Off Block
MMIO: Memory-Mapped I/O
OP-TEE: Open Portable Trusted Execution Environment
OS: Operating System
PI: Platform Initialization
SP: Secure Partition
SPM: Secure Partition Manager
SPMC: Secure Partition Manager Core
SPMCATTR: Attribute defined in the SPMC Manifest
SPMD: Secure Partition Manager Dispatcher
Tag-ID: An Identifier to determine content of Transfer Entry
TCG-EFI: Trusted Computing Group Extensible Firmware Interface
TE: Transfer Entry
TF-A: Trusted Firmware-A
TFAFFAMB: TF-A Secure Partition Manager: FF-A Manifest Binding
TL: Transfer List
TPM: Trusted Platform Module
TPM CRB: Trusted Platform Module Command Response Buffer