Intel Extensible Firmware Interface Table of Contents

Version 1.02 12/12/00 v

Table of Contents

1.1 Overview.................................................................................................... 2

1.2 Goals......................................................................................................... 3

1.3 Target Audience........................................................................................ 5

1.4 Related Information................................................................................... 6

1.5 Prerequisite Specifications ........................................................................8

1.5.1 ACPI Specification............................................................................. 8

1.5.2 WfM Specification.............................................................................. 8

1.5.3 Additional Considerations for Itanium™-based Platforms.................. 9

1.6 EFI Design Overview................................................................................. 9

1.7 Migration Requirements........................................................................... 11

1.7.1 Legacy Operating System Support..................................................11

1.7.2 Supporting the EFI Specification on a Legacy Platform...................11

1.8 Conventions Used in This Document.......................................................12

1.8.1 Data Structure Descriptions.............................................................12

1.8.2 Typographic Conventions................................................................ 12

1.9 Guidelines for Use of the Term “Extensible Firmware Interface”.............12

2.1 Boot Manager.......................................................................................... 14

2.2 Firmware Core......................................................................................... 14

2.2.1 EFI Services.................................................................................... 14

2.2.2 Runtime Services............................................................................ 15

2.3 Calling Conventions................................................................................. 16

2.3.1 Data Types...................................................................................... 16

2.3.2 IA-32 Platforms................................................................................ 18

2.3.3 Itanium-based Platforms..................................................................18

2.4 Protocols.................................................................................................. 19

2.5 Requirements.......................................................................................... 21

2.5.1 Required Elements.......................................................................... 21

2.5.2 Optional Elements........................................................................... 22

2.5.3 Appendixes...................................................................................... 23