Platform Initialization Specification

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The Platform Initialization Specification (PI Specification) is a specification published by the Unified EFI Forum that describes the internal interfaces between different parts of computer platform firmware.[1] This allows for more interoperability between firmware components from different sources. This specification is normally, but not by requirement, used in conjunction with the UEFI specification.

Current version[edit]

Platform Initialization Specification 1.3 Released March 2013


As of version 1.3, the PI specification contains five volumes:

  • Volume 1: Pre-EFI Initialization Core Interface
  • Volume 2: Driver Execution Environment Core Interface
  • Volume 3: Shared Architectural Elements
  • Volume 4: System Management Mode Core Interface
  • Volume 5: Standards


External links[edit]