ASLR – Address Space Layout Randomization.
BDA - BIOS Data Area.
CSM – Compatibility Support Module.
DEP – Data Execution Protection.
EBDA - Extended BIOS Data Area
HOB – Hand off block. See [PI].
MMIO – Memory Mapped I/O.
NX – No Execution. See DEP.
PE/COFF – Portable Executable and Common Object File Format. The executable file format for UEFI.
ROP - Return-oriented programming
RO – Read Only.
RW – Read/Write.
PCD – Platform configuration database. See [PI].
PF – Page Fault Exception.
PI – Platform Initialization. Volume 1-5 of the UEFI PI specifications.
SPI – Serial Peripheral Interface.
TSS - Task-state segment. See [IA32 SDM].
UEFI – Unified Extensible Firmware Interface. Firmware interface between the platform and the operating system. Predominate interfaces are in the boot services (BS) or pre-OS. Few runtime (RT) services.
VTd – Virtualization for Directed IO. See [VTd]
WP – Write Protect.
XD – Execution Disable. See DEP.
XP – Execution Protected. See DEP.