Intel Extensible Firmware Interface User Manual

Extensible firmware interface specification

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Extensible Firmware Interface

Specification

Version 1.10

December 1, 2002

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Table of contents

Document Outline

Extensible Firmware Interface Specification
Disclaimer
Revision History
Contents
1 Introduction
- 1.1 EFI Driver Model Extensions
- 1.2 Overview
- 1.3 Goals
- 1.4 Target Audience
- 1.5 EFI Design Overview
- 1.6 EFI Driver Model
  - 1.6.1 EFI Driver Model Goals
  - 1.6.2 Legacy Option ROM Issues
- 1.7 Migration Requirements
  - 1.7.1 Legacy Operating System Support
  - 1.7.2 Supporting the EFI Specification on a Legacy Platform
- 1.8 Conventions Used in This Document
2 Overview
- 2.1 Boot Manager
- 2.2 Firmware Core
  - 2.2.1 EFI Services
  - 2.2.2 Runtime Services
- 2.3 Calling Conventions
- 2.4 Protocols
- 2.5 EFI Driver Model
- 2.6 Requirements
3 Boot Manager
- 3.1 Firmware Boot Manager
- 3.2 Globally-Defined Variables
- 3.3 Boot Option Variables Default Behavior
- 3.4 Boot Mechanisms
  - 3.4.1 Boot via Simple File Protocol
    - 3.4.1.1 Removable Media Boot Behavior
  - 3.4.2 Boot via LOAD_FILE Protocol
    - 3.4.2.1 Network Booting
    - 3.4.2.2 Future Boot Media
4 EFI System Table
- 4.1 EFI Image Entry Point
  - EFI_IMAGE_ENTRY_POINT
- 4.2 EFI Table Header
  - EFI_TABLE_HEADER
- 4.3 EFI System Table
  - EFI_SYSTEM_TABLE
- 4.4 EFI Boot Services Table
  - EFI_BOOT_SERVICES
- 4.5 EFI Runtime Services Table
  - EFI_RUNTIME_SERVICES
- 4.6 EFI Configuration Table
  - EFI_CONFIGURATION_TABLE
- 4.7 EFI Image Entry Point Examples
5 Services - Boot Services
- 5.1 Event, Timer, and Task Priority Services
- 5.2 Memory Allocation Services
- 5.3 Protocol Handler Services
  - 5.3.1 Driver Model Boot Services
- 5.4 Image Services
- 5.5 Miscellaneous Boot Services
6 Services - Runtime Services
- 6.1 Variable Services
- 6.2 Time Services
- 6.3 Virtual Memory Services
  - SetVirtualAddressMap()
  - ConvertPointer()
- 6.4 Miscellaneous Runtime Services
  - ResetSystem()
  - GetNextHighMonotonicCount()
7 Protocols - EFI Loaded Image
- EFI_LOADED_IMAGE Protocol
  - LOADED_IMAGE.Unload()
8 Protocols - Device Path Protocol
- 8.1 Device Path Overview
- 8.2 EFI_DEVICE_PATH Protocol
  - EFI_DEVICE_PATH Protocol
- 8.3 Device Path Nodes
- 8.4 Device Path Generation Rules
9 Protocols - EFI Driver Model
- 9.1 EFI Driver Binding Protocol
  - EFI_DRIVER_BINDING_PROTOCOL
- 9.2 EFI Platform Driver Override Protocol
  - EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL
- 9.3 EFI Bus Specific Driver Override Protocol
  - EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL
    - EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL.GetDriver()
- 9.4 EFI Driver Configuration Protocol
  - EFI_DRIVER_CONFIGURATION_PROTOCOL
- 9.5 EFI Driver Diagnostics Protocol
  - EFI_DRIVER_DIAGNOSTICS_PROTOCOL
    - EFI_DRIVER_DIAGNOSTICS_PROTOCOL.RunDiagnostics()
- 9.6 EFI Component Name Protocol
  - EFI_COMPONENT_NAME_PROTOCOL
    - EFI_COMPONENT_NAME_PROTOCOL.GetDriverName()
    - EFI_COMPONENT_NAME_PROTOCOL.GetControllerName()
10 Protocols - Console Support
- 10.1 Console I/O Protocol
  - 10.1.1 Overview
  - 10.1.2 ConsoleIn Definition
- 10.2 Simple Input Protocol
  - SIMPLE_INPUT
    - SIMPLE_INPUT.Reset()
    - SIMPLE_INPUT.ReadKeyStroke()
  - 10.2.1 ConsoleOut or StandardError
- 10.3 Simple Text Output Protocol
  - SIMPLE_TEXT_OUTPUT Protocol
- 10.4 Universal Graphics Adapter Protocols
- 10.5 UGA Draw Protocol
  - EFI_UGA_DRAW_PROTOCOL
- 10.6 Rules for PCI/AGP Devices
- 10.7 UGA I/O Protocol
  - EFI_UGA_IO_PROTOCOL
- 10.8 Implementation Rules for an EFI UGA Driver
- 10.9 UGA Draw Protocol to UGA I/O Protocol Mapping
- 10.10 Simple Pointer Protocol
  - EFI_SIMPLE_POINTER_PROTOCOL
    - EFI_SIMPLE_POINTER.Reset()
    - EFI_SIMPLE_POINTER.GetState()
- 10.11 EFI Simple Pointer Device Paths
- 10.12 Serial I/O Protocol
  - SERIAL_IO_PROTOCOL
11 Protocols - Bootable Image Support
- 11.1 LOAD_FILE Protocol
  - LOAD_FILE Protocol
    - LOAD_FILE.LoadFile()
- 11.2 File System Format
- 11.3 File System Protocol
  - Simple File System Protocol
    - EFI_FILE_IO_INTERFACE.OpenVolume()
- 11.4 EFI_FILE Protocol
  - EFI_FILE Protocol
- 11.5 DISK_IO Protocol
  - DISK_IO Protocol
    - EFI_DISK_IO.ReadDisk()
    - EFI_DISK_IO.WriteDisk()
- 11.6 BLOCK_IO Protocol
  - BLOCK_IO Protocol
- 11.7 UNICODE_COLLATION Protocol
  - UNICODE_COLLATION Protocol
12 Protocols - PCI Bus Support
- 12.1 PCI Root Bridge I/O Support
  - 12.1.1 PCI Root Bridge I/O Overview
    - 12.1.1.1 Sample PCI Architectures
- 12.2 PCI Root Bridge I/O Protocol
  - EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL
  - 12.2.1 PCI Root Bridge Device Paths
- 12.3 PCI Driver Model
- 12.4 EFI PCI I/O Protocol
13 Protocols - SCSI Bus Support
- 13.1 SCSI Pass Thru Protocol
  - EFI_SCSI_PASS_THRU Protocol
- 13.2 SCSI Pass Thru Device Paths
14 Protocols - USB Support
- 14.1 USB Host Controller Protocol
  - 14.1.1 USB Host Controller Protocol Overview
    - EFI_USB_HC_PROTOCOL
- 14.2 USB Driver Model
15 Protocols - Network Support
- 15.1 EFI_SIMPLE_NETWORK Protocol
  - EFI_SIMPLE_NETWORK Protocol
- 15.2 NETWORK_INTERFACE_IDENTIFIER Protocol
  - EFI_NETWORK_INTERFACE_IDENTIFIER_PROTOCOL
- 15.3 PXE Base Code Protocol
  - EFI_PXE_BASE_CODE Protocol
- 15.4 PXE Base Code Callback Protocol
  - EFI_PXE_BASE_CODE_CALLBACK Protocol
    - EFI_PXE_BASE_CODE_CALLBACK.Callback()
- 15.5 Boot Integrity Services Protocol
  - EFI_BIS_PROTOCOL
16 Protocols - Debugger Support
- 16.1 Overview
- 16.2 EFI Debug Support Protocol
  - 16.2.1 EFI Debug Support Protocol Overview
    - EFI_DEBUG_SUPPORT_PROTOCOL
- 16.3 EFI Debugport Protocol
- 16.4 EFI Debug Support Table
17 Protocols - Compression Algorithm Specification
- 17.1 Algorithm Overview
- 17.2 Data Format
- 17.3 Compressor Design
- 17.4 Decompressor Design
- 17.5 Decompress Protocol
  - EFI_DECOMPRESS_PROTOCOL
    - EFI_DECOMPRESS_PROTOCOL.GetInfo()
    - EFI_DECOMPRESS_PROTOCOL.Decompress()
18 Protocols - Device I/O Protocol
- 18.1 Device I/O Overview
- 18.2 DEVICE_IO Protocol
  - DEVICE_IO Protocol
19 EFI Byte Code Virtual Machine
- 19.1 Overview
- 19.2 Memory Ordering
- 19.3 Virtual Machine Registers
- 19.4 Natural Indexing
- 19.5 EBC Instruction Operands
- 19.6 EBC Instruction Syntax
- 19.7 Instruction Encoding
- 19.8 EBC Instruction Set
  - ADD
  - AND
  - ASHR
  - BREAK
  - CALL
  - CMP
  - CMPI
  - DIV
  - DIVU
  - EXTNDB
  - EXTNDD
  - EXTNDW
  - JMP
  - JMP8
  - MOD
  - MODU
  - MOV
  - MOVI
  - MOVIn
  - MOVn
  - MOVREL
  - MOVsn
  - MUL
  - MULU
  - NEG
  - NOT
  - OR
  - POP
  - POPn
  - PUSH
  - PUSHn
  - RET
  - SHL
  - SHR
  - STORESP
  - SUB
  - XOR
- 19.9 Runtime and Software Conventions
- 19.10 Architectural Requirements
- 19.11 EBC Interpreter Protocol
  - EFI_EBC_PROTOCOL
- 19.12 EBC Tools
- 19.13 VM Exception Handling
- 19.14 Option ROM Formats
  - 19.14.1 EFI Drivers for PCI Add-in Cards
  - 19.14.2 Non-PCI Bus Support
Appendix A GUID and Time Formats
Appendix B Console
- B.1 SIMPLE_INPUT
- B.2 SIMPLE_TEXT_OUTPUT
Appendix C Device Path Examples
- C.1 Example Computer System
- C.2 Legacy Floppy
- C.3 IDE Disk
- C.4 Secondary Root PCI Bus with PCI to PCI Bridge
- C.5 ACPI Terms
- C.6 EFI Device Path as a Name Space
Appendix D Status Codes
Appendix E 32/64-Bit UNDI Specification
- E.1 Introduction
- E.2 Overview
  - E.2.1 32/64-bit UNDI Interface
  - E.2.2 UNDI Command Format
- E.3 UNDI C Definitions
- E.4 UNDI Commands
- E.5 UNDI as an EFI Runtime Driver
Appendix F Using the Simple Pointer Protocol
Appendix G Using the EFI SCSI Pass Thru Protocol
Appendix H Compression Source Code
Appendix I Decompression Source Code
Appendix J EFI Byte Code Virtual Machine Opcode Summary
Appendix K Alphabetic Function Lists
References
Glossary
Index

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