Unified EFI Forum

UEFI Forum, Inc. is a nonprofit industry alliance formed to coordinate the development, maintenance, promotion, and adoption of firmware standards for modern computing platforms. Its central responsibility is the Unified Extensible Firmware Interface, or UEFI, a standardized firmware environment and interface that operates between a computer’s platform firmware and its operating system. UEFI was developed as the successor to the legacy PC BIOS model, providing a more extensible framework for boot services, runtime services, hardware initialization, device support, and operating-system handoff. The forum’s work grew out of Intel’s earlier Extensible Firmware Interface specification. Intel’s EFI technology served as the starting point for a broader, multi-company standardization effort, which produced the UEFI specifications and established the forum as the organization responsible for their ongoing administration and promotion. Rather than selling consumer hardware or operating systems, the forum operates as a standards body whose work is implemented by firmware vendors, computer manufacturers, processor companies, operating-system developers, and other members of the technology ecosystem. The organization’s scope extends beyond the core UEFI specification. It also manages the UEFI Platform Initialization specification, which describes the internal architecture of platform firmware and the interfaces between firmware components and hardware. This work addresses how a system initializes its processors, memory, buses, devices, and other platform elements before control is transferred to an operating system. The forum additionally maintains self-certification test suites intended to help implementers evaluate whether their products conform to the specifications. In October 2013, responsibility for the Advanced Configuration and Power Interface assets was transferred to the UEFI Forum. ACPI defines standardized static tables and dynamic control methods used by operating systems and system firmware to describe hardware configuration, manage power, and support reliability, availability, and serviceability functions. The forum therefore became responsible not only for the boot and firmware-to-operating-system interface represented by UEFI, but also for a major portion of the standardized configuration and power-management interface used by contemporary computers. The forum is governed by a board representing twelve promoter companies: AMD, American Megatrends, Arm, Apple, Dell, Hewlett Packard Enterprise, HP Inc., Insyde Software, Intel, Lenovo, Microsoft, and Phoenix Technologies. These companies span processor design, firmware development, personal-computer manufacturing, enterprise technology, and operating-system software. Their participation reflects the cross-industry nature of firmware standards, which must work across components and products made by many different organizations. The forum publishes formal specifications and related technical materials rather than conventional branded products. Published work has included UEFI Specification 2.8, UEFI Shell Specification 2.2, UEFI Platform Initialization Specification 1.7, the UEFI Platform Initialization Distribution Packaging Specification 1.1, and ACPI Specification 6.4. Earlier UEFI and platform-initialization releases remain part of the specification’s historical lineage, although some versions are identified as obsolete. Through these standards, testing resources, and industry coordination, the UEFI Forum supports interoperability among firmware, hardware, and operating systems across the global computing market.

The UEFI Forum emerged from the need to replace the aging PC BIOS model with a more capable and extensible firmware interface. Intel initially developed the Extensible Firmware Interface as a technology for connecting platform firmware with an operating system. EFI provided the foundation for subsequent industry collaboration, but a widely adopted successor required coordination among processor companies, firmware developers, computer manufacturers, operating-system vendors, and other platform participants. The UEFI Forum was established as a nonprofit industry alliance to manage that collaboration. Its principal task became the development and promotion of the Unified Extensible Firmware Interface specification. UEFI defines services and interfaces used during system startup and, in some cases, after the operating system has taken control. Compared with traditional BIOS conventions, it provides a more structured and extensible environment for boot management, firmware drivers, hardware discovery, and communication between platform firmware and operating systems. The forum’s remit expanded through the creation and administration of the UEFI Platform Initialization specification. PI addresses the internal organization of platform firmware and the interfaces used during hardware initialization. This allows different firmware components and platform technologies to work within a common architectural framework. The organization also developed self-certification test suites to support conformance assessment by implementers and to encourage interoperability among products based on the standards. The forum’s governance reflects the importance of cross-vendor compatibility. Its board includes representatives from AMD, American Megatrends, Arm, Apple, Dell, Hewlett Packard Enterprise, HP Inc., Insyde Software, Intel, Lenovo, Microsoft, and Phoenix Technologies. These promoter companies represent multiple layers of the computing stack, including processors, firmware, personal computers, enterprise hardware, and operating systems. A major expansion occurred in October 2013, when the Advanced Configuration and Power Interface assets were transferred to the forum. ACPI provides standardized tables and control methods through which system firmware and operating systems describe platform hardware, manage power, and support reliability, availability, and serviceability capabilities. The transfer made the UEFI Forum a steward of both the system-boot interface and a central system-configuration and power-management standard. ACPI Revision 5.0 served as the starting point for future versions developed under the forum’s management. The forum has continued to publish successive versions of its technical specifications. Documented releases include UEFI Specification 2.8 from March 2019, UEFI Platform Initialization Specification 1.7 from January 2019, and ACPI Specification 6.4 from January 2021. It has also maintained the UEFI Shell Specification and distribution-packaging documentation for platform initialization. Older UEFI and PI versions remain part of the technology’s development history but are classified as obsolete in the forum’s published specification record. Today, the UEFI Forum functions primarily as a standards and industry-coordination body. Its influence comes from the adoption of its specifications in computer firmware, operating systems, development environments, and hardware platforms rather than from direct consumer sales. UEFI and ACPI implementations are used throughout the modern personal-computer and server ecosystem, making the forum’s work a foundational part of system startup, platform initialization, device description, and power management.

• 2021

  ACPI Specification 6.4 published

  [1]UEFI Forumen.wikipedia.org

  The forum published ACPI Specification 6.4, continuing the evolution of its configuration, power-management, and reliability interface standards.

• 2019

  UEFI and PI specifications advanced

  [1]UEFI Forumen.wikipedia.org

  UEFI Specification 2.8 and UEFI Platform Initialization Specification 1.7 were published during 2019.

• 2016

  UEFI Shell and PI packaging specifications documented

  [1]UEFI Forumen.wikipedia.org

  The forum's published specification record included UEFI Shell Specification 2.2 and UEFI Platform Initialization Distribution Packaging Specification 1.1.

• 2013

  ACPI stewardship transferred to the forum

  [1]UEFI Forumen.wikipedia.org

  In October 2013, management and promotion of ACPI assets moved to the UEFI Forum, broadening its responsibilities to include system configuration and power-management standards.

• Intel EFI became the foundation for UEFI development

  [1]UEFI Forumen.wikipedia.org

  Intel's earlier Extensible Firmware Interface specification served as the technical starting point for the industry-developed UEFI specifications.

A cross-industry, nonprofit standards organization for firmware, boot, hardware-initialization, configuration, and power-management interoperability.

• Firmware interface standard

  UEFI Specification

  The core UEFI specification defines the standardized firmware environment and services that mediate between a computer platform and its operating system. It was developed as an industry successor to the legacy PC BIOS approach and supports boot management, platform services, firmware drivers, hardware discovery, and operating-system handoff. The documented 2.8 release was published in March 2019.

• Firmware architecture standard

  UEFI Platform Initialization Specification

  The PI specification describes the internal architecture of platform firmware and the interfaces linking firmware components with hardware. It provides an architectural framework for processor, memory, bus, and device initialization before the operating system begins execution. Version 1.7 was published in January 2019.

• Firmware shell standard

  UEFI Shell Specification

  The UEFI Shell specification defines a standardized shell environment for interacting with firmware services and platform components. It supports firmware-level commands and utilities used in system administration, diagnostics, deployment, and development. The documented 2.2 release was published in January 2016.

• Conformance testing

  Self-Certification Test Suites

  The forum's self-certification test suites help implementers assess whether firmware and related products conform to the specifications managed by the organization. They are intended to promote interoperability and give developers a practical means of checking implementation behavior against the relevant standards.

• System configuration and power-management standard

  Advanced Configuration and Power Interface

  ACPI provides static tables and dynamic control methods through which operating systems and firmware describe hardware configuration, manage power, and implement reliability, availability, and serviceability functions. The UEFI Forum assumed responsibility for the ACPI assets in October 2013. ACPI Specification 6.4 was published in January 2021.

• 2019

  Publish UEFI Specification 2.8Product launch

  Background

  The forum periodically revises its core firmware interface standard to support continued implementation across the computing industry.

  Action taken

  The organization published UEFI Specification version 2.8 in March 2019.

  Aftermath

  The release became part of the forum's published specification lineage for implementers of firmware and operating-system platforms.

  Source

• 2013

  Expand standards stewardship through ACPI transferStrategy

  Background

  The forum already managed UEFI and platform-initialization standards, while ACPI governed complementary interfaces for hardware description, power management, and reliability functions.

  Action taken

  In October 2013, ACPI assets were transferred to the UEFI Forum for ongoing management and promotion, with ACPI Revision 5.0 serving as the starting point for future development.

  Aftermath

  The transfer expanded the forum's role from firmware boot and initialization standards to a broader set of interfaces connecting operating systems, firmware, and platform configuration.

  Source

1. 1UEFI Forumen.wikipedia.org
2. 2UEFI Forum official websiteuefi.org