Appendix E: Glossary
This appendix provides definitions for all acronyms, technical terms, error codes, and boot phase terminology used throughout this guide.
E.1 Acronyms (A-Z)
| Acronym | Full Form | Description |
|---|---|---|
| ACPI | Advanced Configuration and Power Interface | OS-firmware interface for hardware discovery, power management, and configuration |
| AML | ACPI Machine Language | Bytecode format for ACPI DSDT/SSDT tables |
| ASL | ACPI Source Language | Human-readable source for ACPI tables, compiled to AML |
| BDS | Boot Device Selection | Boot phase where boot targets are identified and launched |
| BIOS | Basic Input/Output System | Legacy firmware interface, predecessor to UEFI |
| BMC | Baseboard Management Controller | Out-of-band hardware management processor |
| BSP | Bootstrap Processor | The first processor to execute firmware code at power-on |
| CAR | Cache-As-RAM | Technique using CPU cache as temporary memory before DRAM init |
| CFR | Configuration File Reader | Project Mu configuration knob definition format |
| CMOS | Complementary Metal-Oxide Semiconductor | Battery-backed non-volatile memory for legacy BIOS settings |
| CRB | Customer Reference Board | Reference hardware platform from a silicon vendor |
| CSM | Compatibility Support Module | Legacy BIOS compatibility layer in UEFI firmware |
| DEC | Package Declaration | EDK2 file format declaring package exports |
| DFCI | Device Firmware Configuration Interface | Project Mu cloud-managed firmware configuration |
| DRAM | Dynamic Random-Access Memory | Main system memory |
| DSC | Platform Description | EDK2 file format describing a complete platform build |
| DSDT | Differentiated System Description Table | Primary ACPI table describing platform hardware |
| DXE | Driver Execution Environment | Boot phase with full memory, protocol-based driver model |
| EBC | EFI Byte Code | Platform-independent bytecode for UEFI drivers |
| EFI | Extensible Firmware Interface | Original name for what became UEFI |
| ESRT | EFI System Resource Table | Table listing firmware components for capsule update |
| FAT | File Allocation Table | Filesystem required on EFI System Partition |
| FDF | Flash Description File | EDK2 file format describing firmware image layout |
| FIT | Firmware Interface Table | Intel-specific table for ACM, microcode, and startup |
| FMP | Firmware Management Protocol | UEFI protocol for firmware component updates |
| FPD | Flash Platform Description | Legacy EDK file format (replaced by FDF) |
| FSP | Firmware Support Package | Intel binary for silicon initialization |
| FTP | Firmware Trusted Platform | Platform security architecture |
| FV | Firmware Volume | Logical container for firmware files within flash |
| FVB | Firmware Volume Block | Protocol for reading/writing firmware volume storage |
| GCD | Global Coherency Domain | Memory and I/O space management in DXE |
| GOP | Graphics Output Protocol | UEFI protocol for framebuffer graphics |
| GPT | GUID Partition Table | UEFI-standard disk partitioning scheme |
| GUID | Globally Unique Identifier | 128-bit identifier used extensively in UEFI |
| HAL | Hardware Abstraction Layer | Software layer isolating OS from hardware specifics |
| HII | Human Interface Infrastructure | UEFI framework for forms, strings, fonts, and images |
| HOB | Hand-Off Block | Data structure passed from PEI to DXE |
| HTTP | Hypertext Transfer Protocol | UEFI network protocol for web-based boot and update |
| IASL | Intel ACPI Source Language Compiler | Tool to compile ASL to AML |
| IFR | Internal Forms Representation | Binary encoding of HII forms |
| INF | Module Information | EDK2 file format describing a single module |
| IPMI | Intelligent Platform Management Interface | BMC communication standard |
| KTI | Intel Ultra Path Interconnect | Intel CPU interconnect (formerly QPI/UPI) |
| MAT | Memory Attributes Table | UEFI table describing memory region attributes |
| MBR | Master Boot Record | Legacy disk partitioning scheme |
| MM | Management Mode | Generic term for SMM (x86) or equivalent on other architectures |
| MMIO | Memory-Mapped I/O | Device registers accessible through memory address space |
| MNP | Managed Network Protocol | UEFI data-link layer network protocol |
| MOR | Memory Overwrite Request | TCG-defined variable to request memory clearing on reset |
| MTRR | Memory Type Range Register | x86 registers controlling memory caching behavior |
| NVRAM | Non-Volatile Random-Access Memory | Persistent storage for UEFI variables |
| OVMF | Open Virtual Machine Firmware | UEFI firmware for QEMU/KVM virtual machines |
| PCD | Platform Configuration Database | EDK2 mechanism for build-time and runtime configuration |
| PCH | Platform Controller Hub | Intel chipset component |
| PCI | Peripheral Component Interconnect | Bus standard for connecting hardware devices |
| PCIe | PCI Express | Serial point-to-point version of PCI |
| PE | Portable Executable | Windows executable format used for UEFI binaries |
| PEI | Pre-EFI Initialization | Early boot phase for memory and silicon init |
| PEIM | PEI Module | Executable module that runs during PEI phase |
| PI | Platform Initialization | UEFI Forum specification for firmware internals |
| PPI | PEI-to-PEI Interface | Service interface mechanism in PEI (analogous to DXE protocols) |
| PXE | Preboot Execution Environment | Network boot standard |
| QEMU | Quick EMUlator | Open-source machine emulator and virtualizer |
| RSDP | Root System Description Pointer | ACPI entry point structure |
| RT | Runtime | UEFI services available after ExitBootServices |
| S3 | Sleep State 3 (Suspend to RAM) | ACPI sleep state preserving memory contents |
| SB | Service Binding | UEFI pattern for creating child protocol instances |
| SEC | Security Phase | First UEFI boot phase, runs from flash/ROM |
| SIO | Super I/O | Legacy peripheral controller (serial, parallel, PS/2) |
| SMBus | System Management Bus | Two-wire communication bus for hardware monitoring |
| SMBIOS | System Management BIOS | Standard for system information tables |
| SMI | System Management Interrupt | Interrupt that enters SMM |
| SMM | System Management Mode | Privileged x86 CPU mode for firmware runtime services |
| SMRAM | System Management RAM | Memory region accessible only in SMM |
| SNP | Simple Network Protocol | UEFI protocol for basic network frame TX/RX |
| SPI | Serial Peripheral Interface | Bus for flash chip communication |
| SSDT | Secondary System Description Table | Supplementary ACPI table |
| TCG | Trusted Computing Group | Organization defining TPM and measured boot standards |
| TLS | Transport Layer Security | Encryption protocol for network communications |
| TPL | Task Priority Level | UEFI preemption priority mechanism |
| TPM | Trusted Platform Module | Security chip for cryptographic operations and measurement |
| TSC | Time Stamp Counter | x86 CPU cycle counter register |
| TSeg | Top Segment | Memory region reserved for SMM |
| UEFI | Unified Extensible Firmware Interface | Industry standard firmware interface specification |
| UNDI | Universal Network Driver Interface | Low-level NIC driver interface |
| USF | Universal Scalable Firmware | Initiative to standardize interfaces between firmware components |
| VLAN | Virtual LAN | Network segmentation supported by UEFI network stack |
| VMM | Virtual Machine Monitor | Hypervisor; firmware may need to interact with VMM services |
| VFR | Visual Forms Representation | Source language for HII forms |
| VPD | Vital Product Data | Read-only manufacturing data region |
| XHCI | eXtensible Host Controller Interface | USB 3.x host controller standard |
E.2 EFI_STATUS Error Codes
Success and Information Codes
| Code | Name | Value (X64) | Description |
|---|---|---|---|
| 0 | EFI_SUCCESS |
0x0 | Operation completed successfully |
EFI_WARN_UNKNOWN_GLYPH |
0x1 | String contained unknown glyph | |
EFI_WARN_DELETE_FAILURE |
0x2 | File handle deleted but deletion was incomplete | |
EFI_WARN_WRITE_FAILURE |
0x3 | Data written but some was lost | |
EFI_WARN_BUFFER_TOO_SMALL |
0x4 | Buffer too small for result | |
EFI_WARN_STALE_DATA |
0x5 | Data may be stale | |
EFI_WARN_FILE_SYSTEM |
0x6 | Filesystem issue detected but operation completed | |
EFI_WARN_RESET_REQUIRED |
0x7 | System reset recommended |
Error Codes (high bit set)
| Code | Name | Value (X64) | Description |
|---|---|---|---|
| 1 | EFI_LOAD_ERROR |
0x8000000000000001 | Image load failed |
| 2 | EFI_INVALID_PARAMETER |
0x8000000000000002 | Invalid parameter passed |
| 3 | EFI_UNSUPPORTED |
0x8000000000000003 | Operation not supported |
| 4 | EFI_BAD_BUFFER_SIZE |
0x8000000000000004 | Buffer size incorrect |
| 5 | EFI_BUFFER_TOO_SMALL |
0x8000000000000005 | Buffer too small; required size returned |
| 6 | EFI_NOT_READY |
0x8000000000000006 | No data pending |
| 7 | EFI_DEVICE_ERROR |
0x8000000000000007 | Physical device error |
| 8 | EFI_WRITE_PROTECTED |
0x8000000000000008 | Target is write-protected |
| 9 | EFI_OUT_OF_RESOURCES |
0x8000000000000009 | Insufficient resources |
| 10 | EFI_VOLUME_CORRUPTED |
0x800000000000000A | Filesystem/volume corrupted |
| 11 | EFI_VOLUME_FULL |
0x800000000000000B | No space on volume |
| 12 | EFI_NO_MEDIA |
0x800000000000000C | No media in device |
| 13 | EFI_MEDIA_CHANGED |
0x800000000000000D | Media changed since last access |
| 14 | EFI_NOT_FOUND |
0x800000000000000E | Item not found |
| 15 | EFI_ACCESS_DENIED |
0x800000000000000F | Access denied |
| 16 | EFI_NO_RESPONSE |
0x8000000000000010 | Server/device not responding |
| 17 | EFI_NO_MAPPING |
0x8000000000000011 | No mapping for device |
| 18 | EFI_TIMEOUT |
0x8000000000000012 | Operation timed out |
| 19 | EFI_NOT_STARTED |
0x8000000000000013 | Protocol not started |
| 20 | EFI_ALREADY_STARTED |
0x8000000000000014 | Protocol already started |
| 21 | EFI_ABORTED |
0x8000000000000015 | Operation aborted |
| 22 | EFI_ICMP_ERROR |
0x8000000000000016 | ICMP error received |
| 23 | EFI_TFTP_ERROR |
0x8000000000000017 | TFTP error received |
| 24 | EFI_PROTOCOL_ERROR |
0x8000000000000018 | Protocol error |
| 25 | EFI_INCOMPATIBLE_VERSION |
0x8000000000000019 | Version incompatibility |
| 26 | EFI_SECURITY_VIOLATION |
0x800000000000001A | Security policy violation |
| 27 | EFI_CRC_ERROR |
0x800000000000001B | CRC check failed |
| 28 | EFI_END_OF_MEDIA |
0x800000000000001C | End of media reached |
| 31 | EFI_END_OF_FILE |
0x800000000000001F | End of file reached |
| 32 | EFI_INVALID_LANGUAGE |
0x8000000000000020 | Language not supported |
| 33 | EFI_COMPROMISED_DATA |
0x8000000000000021 | Data integrity compromised |
| 35 | EFI_HTTP_ERROR |
0x8000000000000023 | HTTP error |
The %r format specifier in DEBUG and Print automatically converts EFI_STATUS codes to human-readable strings.
E.3 Boot Phase Terms
| Phase | Full Name | Description |
|---|---|---|
| SEC | Security Phase | First code executed from reset vector; verifies firmware integrity, initializes temporary RAM (CAR), and transfers to PEI |
| PEI | Pre-EFI Initialization | Initializes minimal hardware (memory controller, chipset basics); runs PEIMs; produces HOBs for DXE |
| DXE | Driver Execution Environment | Full-featured driver model with protocol database; loads and dispatches DXE drivers; establishes boot and runtime services |
| BDS | Boot Device Selection | Enumerates boot devices, processes boot order, launches boot targets |
| TSL | Transient System Load | Period between BDS and OS calling ExitBootServices; OS loader runs here |
| RT | Runtime | Services available to the OS after ExitBootServices (variable access, time, reset) |
| AL | After Life | System state after OS shuts down (reset, power off, or S3/S4 resume) |
| SMM | System Management Mode | Isolated execution environment for runtime firmware services (x86); entered via SMI |
| MM | Management Mode | Architecture-neutral term for SMM-like isolated execution |
E.4 Memory Type Terms
| Type | Description |
|---|---|
EfiReservedMemoryType |
Firmware-reserved, not usable by OS |
EfiLoaderCode |
UEFI application/loader code; usable after ExitBootServices |
EfiLoaderData |
UEFI application/loader data; usable after ExitBootServices |
EfiBootServicesCode |
Boot services driver code; usable after ExitBootServices |
EfiBootServicesData |
Boot services driver data; usable after ExitBootServices |
EfiRuntimeServicesCode |
Runtime driver code; must be preserved |
EfiRuntimeServicesData |
Runtime driver data; must be preserved |
EfiConventionalMemory |
Free, usable memory |
EfiUnusableMemory |
Memory with errors; not usable |
EfiACPIReclaimMemory |
ACPI tables; reclaimable after OS parses them |
EfiACPIMemoryNVS |
ACPI NVS; must be preserved |
EfiMemoryMappedIO |
Device MMIO regions |
EfiMemoryMappedIOPortSpace |
Device MMIO port space |
EfiPalCode |
Itanium PAL code (historical) |
EfiPersistentMemory |
Persistent (NVDIMM) memory |
E.5 Project Mu Terms
| Term | Description |
|---|---|
| stuart | Python-based build orchestration tool for Project Mu (setup, update, build, CI) |
| ext_dep | External dependency descriptor (YAML file) for pulling packages via NuGet or Git |
| mu_basecore | Core Mu repository containing patched MdePkg, MdeModulePkg, and UefiCpuPkg |
| mu_plus | Extended packages providing Mu-specific features |
| mu_tiano_plus | Mu-patched versions of additional EDK2 packages (NetworkPkg, FatPkg, etc.) |
| Policy Service | Mu framework for managing configuration data through typed policy blobs |
| DFCI | Device Firmware Configuration Interface – cloud-managed firmware settings |
| MM Supervisor | Mu feature providing privilege separation within Management Mode |
| Front Page | Mu’s replacement for the traditional BIOS setup menu |
| Configuration App | Mu application for editing firmware settings via HII or configuration files |
| CFR | Configuration File Reader – declarative format for defining firmware knobs |
| Shared Crypto | Mu approach to sharing a single crypto binary across all firmware components |
| FMP | Firmware Management Protocol – UEFI standard mechanism for firmware updates |
| ESRT | EFI System Resource Table – lists updatable firmware components |
| Capsule Update | UEFI-standard firmware update mechanism delivered as capsule files |
| mu_devops | Repository containing CI/CD templates and shared pipeline components |
| PyTool | Python tooling packages (edk2-pytool-extensions, edk2-pytool-library) |
| PACKAGES_PATH | Environment variable listing directories to search for EDK2 packages |
| WORKSPACE | Root directory for the build system; all paths are relative to this |
E.6 Protocol Terms
| Term | Description |
|---|---|
| Protocol | Named interface (identified by GUID) installed on a handle; provides a function table |
| Handle | Opaque pointer representing a firmware object; protocols are attached to handles |
| Handle Database | Global registry of all handles and their installed protocols |
| Service Binding | Pattern where a protocol creates/destroys child instances (used by networking, USB) |
| Driver Binding | Protocol implementing Start/Stop/Supported for UEFI driver model |
| Component Name | Protocol providing human-readable driver and controller names |
| Device Path | Protocol describing the hardware path to a device (type/subtype node chain) |
| Dependency Expression (DEPEX) | Boolean expression controlling driver dispatch order based on protocol availability |
E.7 Security Terms
| Term | Description |
|---|---|
| Secure Boot | UEFI feature verifying cryptographic signatures of boot loaders and drivers |
| PK | Platform Key – top-level Secure Boot key owned by platform manufacturer |
| KEK | Key Exchange Key – authorized to update db/dbx |
| db | Signature Database – list of trusted signing certificates/hashes |
| dbx | Forbidden Signature Database – revoked certificates/hashes |
| dbt | Timestamp Signature Database – trusted timestamping certificates |
| Measured Boot | Recording firmware/boot component measurements (hashes) into TPM PCRs |
| PCR | Platform Configuration Register – TPM register holding cumulative measurements |
| Event Log | Record of what was measured into each PCR and when |
| TCG Log | Same as Event Log, formatted per TCG specification |
| Root of Trust | Initial trusted component from which a chain of trust extends |
| ACM | Authenticated Code Module – Intel hardware-verified firmware component |
| SPI Flash Protection | Hardware write-protection of flash regions containing firmware |
| Capsule Update | UEFI-defined mechanism for delivering firmware updates as capsule files |
| Rollback Protection | Preventing installation of older, potentially vulnerable firmware versions |
| SMRAM Lock | Mechanism to prevent DXE-phase code from accessing SMM memory |
| Variable Lock | Protocol to make UEFI variables read-only after lock |
| Authenticated Variable | UEFI variable that requires signature verification for writes |
E.8 Build System Terms
| Term | Description |
|---|---|
| WORKSPACE | Root directory of the EDK2/Mu build environment; all relative paths resolve from here |
| PACKAGES_PATH | Semicolon/colon-separated list of directories searched for package references |
| TARGET | Build target: DEBUG (full debug output), RELEASE (optimized, minimal debug), NOOPT (no optimization, full debug) |
| TOOL_CHAIN_TAG | Identifier for the compiler toolchain: GCC5, VS2019, VS2022, CLANGPDB, CLANGDWARF |
| AutoGen | Build system step that generates C source and header files from INF/DEC/DSC metadata |
| BaseTools | Collection of Python and C utilities that implement the EDK2 build system |
| GenFv | Tool that generates firmware volume images from compiled modules |
| GenFw | Tool that converts ELF binaries to PE32+ format for UEFI |
| GenFds | Tool that generates the final flash device image from FDF |
| EDKII_DSC_FEATURE_BUILD_OPTIONS | DSC define for conditional compilation of platform features |
| build -m | Build a single module rather than the entire platform |
| Build Report | Detailed output showing PCD values, library resolution, and flash layout |
| Conf directory | Contains build_rule.txt, tools_def.txt, and target.txt configuration files |
E.9 Hardware and Bus Terms
| Term | Description |
|---|---|
| BAR | Base Address Register – PCI register specifying MMIO or I/O port address range |
| BDF | Bus/Device/Function – PCI device address notation (e.g., 00:1F.0) |
| DMA | Direct Memory Access – hardware mechanism for devices to access memory without CPU |
| IOMMU | I/O Memory Management Unit – hardware that isolates device DMA to assigned regions |
| VT-d | Intel Virtualization Technology for Directed I/O – Intel’s IOMMU implementation |
| MSI | Message Signaled Interrupt – PCI interrupt mechanism using memory writes |
| MSI-X | Extended MSI – enhanced version supporting more interrupt vectors |
| NVMe | Non-Volatile Memory Express – protocol for accessing solid-state storage over PCIe |
| AHCI | Advanced Host Controller Interface – SATA controller interface standard |
| XHCI | eXtensible Host Controller Interface – USB 3.x controller standard |
| EHCI | Enhanced Host Controller Interface – USB 2.0 controller standard |
| SPI | Serial Peripheral Interface – bus used for firmware flash chip access |
| I2C | Inter-Integrated Circuit – two-wire serial bus for low-speed peripherals |
| SMBus | System Management Bus – variant of I2C for system management |
| GPIO | General Purpose Input/Output – configurable digital pins |
| HPET | High Precision Event Timer – platform timer for OS scheduling |
| LAPIC | Local Advanced Programmable Interrupt Controller – per-CPU interrupt controller |
| IOAPIC | I/O Advanced Programmable Interrupt Controller – system interrupt router |
E.10 UEFI Table and Data Structure Terms
| Term | Description |
|---|---|
| System Table (ST) | Top-level UEFI data structure; provides access to Boot Services, Runtime Services, and configuration tables |
| Boot Services Table (BS) | Function table for services available before ExitBootServices (memory, protocols, events, images) |
| Runtime Services Table (RT) | Function table for services available after ExitBootServices (variables, time, reset, virtual address map) |
| Configuration Table | Array of GUID-tagged pointers in the System Table (ACPI, SMBIOS, etc.) |
| HOB List | Hand-Off Block list – data passed from PEI to DXE describing memory, hardware, and resources |
| GCD Map | Global Coherency Domain map – DXE-phase memory and I/O space allocation database |
| EFI_MEMORY_DESCRIPTOR | Structure describing a single memory map entry (type, physical address, pages, attributes) |
| EFI_DEVICE_PATH_PROTOCOL | Linked list of typed nodes describing the hardware path to a device |
| EFI_LOAD_OPTION | Variable-length structure stored in Boot#### variables (attributes, device path, description) |
| EFI_CAPSULE_HEADER | Header for firmware update capsules delivered through UpdateCapsule() |
| EFI_FV_FILETYPE | Enumeration of file types within a firmware volume (DRIVER, APPLICATION, RAW, FREEFORM, etc.) |
| EFI_SECTION_TYPE | Enumeration of section types within FV files (PE32, DEPEX, UI, RAW, COMPRESSED, GUIDED) |
E.11 Network Protocol Terms
| Term | Description |
|---|---|
| SNP | Simple Network Protocol – low-level NIC abstraction for frame send/receive |
| MNP | Managed Network Protocol – data-link layer providing multicast and VLAN support |
| ARP | Address Resolution Protocol – resolves IP addresses to MAC addresses |
| DHCP4/DHCP6 | Dynamic Host Configuration Protocol – automatic IP address assignment |
| DNS4/DNS6 | Domain Name System Protocol – hostname to IP address resolution |
| HTTP | Hypertext Transfer Protocol – application-layer protocol for web communication |
| TCP4/TCP6 | Transmission Control Protocol – reliable, ordered byte stream delivery |
| UDP4/UDP6 | User Datagram Protocol – connectionless datagram delivery |
| IP4/IP6 | Internet Protocol – network-layer addressing and routing |
| PXE Base Code | Preboot Execution Environment protocol – network boot support |
| iSCSI | Internet Small Computer Systems Interface – network-attached storage protocol |
| TLS | Transport Layer Security protocol – encrypted network communication |
| MTFTP4 | Multicast Trivial File Transfer Protocol – multicast file distribution |
| WiFi | IEEE 802.11 wireless LAN – supported via EFI_WIRELESS_MAC_CONNECTION protocols |
E.12 ACPI Terms
| Term | Description |
|---|---|
| RSDP | Root System Description Pointer – initial structure for locating ACPI tables |
| XSDT | Extended System Description Table – 64-bit table of pointers to other ACPI tables |
| RSDT | Root System Description Table – 32-bit version of XSDT (legacy) |
| DSDT | Differentiated System Description Table – primary table describing platform hardware in AML |
| SSDT | Secondary System Description Table – supplementary AML tables |
| FADT | Fixed ACPI Description Table – describes fixed hardware features |
| MADT | Multiple APIC Description Table – describes interrupt controllers and processors |
| MCFG | Memory-Mapped Configuration Space – describes PCI Express ECAM base address |
| HPET | High Precision Event Timer Table – describes HPET hardware |
| DMAR | DMA Remapping Table – describes IOMMU (VT-d) configuration |
| BGRT | Boot Graphics Resource Table – describes boot splash screen image |
| SRAT | System Resource Affinity Table – describes NUMA topology |
| SLIT | System Locality Information Table – describes NUMA distances |
| Sx States | ACPI sleep states: S0 (working), S1-S3 (sleep), S4 (hibernate), S5 (off) |
| Cx States | ACPI CPU idle states: C0 (active), C1-Cn (progressively deeper idle) |
| Px States | ACPI CPU performance states: P0 (highest), P1-Pn (progressively lower frequency) |
E.13 Common UEFI Shell Commands
| Command | Description |
|---|---|
map |
Display or refresh filesystem and device mappings |
ls / dir |
List directory contents |
cd |
Change current directory |
cp / copy |
Copy files |
mv / move |
Move or rename files |
rm / del |
Delete files |
edit |
Simple text editor |
type |
Display file contents |
hexedit |
Hex editor for files |
drivers |
List installed UEFI drivers |
devices |
List device handles |
dh |
Display handle database |
devtree |
Display device tree |
connect |
Connect drivers to devices |
disconnect |
Disconnect drivers from devices |
reconnect |
Reconnect drivers to devices |
load |
Load a UEFI driver image |
unload |
Unload a UEFI driver |
memmap |
Display current memory map |
dmem |
Display memory at an address |
mm |
Read/write memory, I/O, or PCI config space |
pci |
Display PCI device information |
smbiosview |
Display SMBIOS table contents |
acpiview |
Display ACPI table contents |
dmpstore |
Dump or modify UEFI variables |
bcfg |
Manage boot and driver options |
ifconfig |
Configure network interfaces |
ping |
Send ICMP echo requests |
reset |
Reset the system |
exit |
Exit the Shell or a script |
set |
Set or display environment variables |
echo |
Print text to console |
for |
Looping construct in Shell scripts |
if / endif |
Conditional construct in Shell scripts |
goto |
Branch to a label in Shell scripts |
stall |
Pause for a specified number of microseconds |
Summary
This glossary covers the essential terminology for UEFI, PI, Project Mu, EDK2, ACPI, hardware buses, networking, security, and related standards. Use it as a quick reference when encountering unfamiliar acronyms or terms throughout this guide and in the broader firmware development ecosystem.