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RSS订阅Plug and Play BIOS Specification
1.0 Overview 3
1.1 Goals of a Plug and Play System BIOS 4
1.2 Enhancements to the current BIOS architecture 5
1.3 Elements of the Plug and Play BIOS architecture 6
1.3.1 Bi-modal functionality 6
1.3.2 OS Independence 6
1.3.3 Expandability 6
1.4 Installation Structure 7
2.0 System BIOS Initialization 7
2.1 System BIOS POST Requirements 7
2.1.1 System Board Storage Requirements 8
2.1.2 System BIOS Resource Management 9
2.1.3 Isolating Committed Resources 9
2.1.4 System BIOS Resource Allocation 9
2.2 Plug and Play ISA Card Support 11
2.2.1 Assigning CSN to Plug and Play ISA cards 11
2.2.2 Initializing Plug and Play ISA Cards 11
2.3 BIOS POST Option ROM Initialization 12
2.4 Transferring Control to the Operating System 13
2.5 POST Execution flow 13
3.0 Option ROM Support 16
3.1 Option ROM Header 16
3.2 Expansion Header for Plug and Play 17
3.3 Option ROM Initialization 22
3.4 Option ROM Initialization flow 23
3.5 ISA Option ROMs and Resource Mapping 24
3.6 Error Recovery: Returning to the Boot flow 24
4.0 Configuration Support 25
4.1 System Device Configuration List 25
4.2 System Device Node Definition 25
4.3 Plug and Play BIOS Functions 29
4.4 Plug and Play Installation Check 29
4.4.1 System BIOS Plug and Play Compliance - "$PnP" 32
4.5 System Configuration Interface 34
4.5.1 Function 0 - Get Number of System Device Nodes 35
4.5.2 Function 1 - Get System Device Node 36
4.5.3 Function 2 - Set System Device Node 38
4.6 Event Notification Interface 40
4.6.1 Function 3 - Get Event 42
4.6.2 Function 4 - Send Message 43
4.6.3 Function 5 - Get Docking Station Information 47
4.6.4 Function 6 - Reserved 49
4.6.5 Function 7 - Reserved 49
4.6.6 Function 8 - Reserved 49
4.7 Extended Configuration Services 50
4.7.1 Function 9 - Set Statically Allocated Resource Information 51
4.7.2 Function 0Ah - Get Statically Allocated Resource Information 53
4.7.3 Function 40h - Get Plug & Play ISA Configuration Structure 54
4.7.4 Function 41h - Get Extend
2010-06-04
BIOS Boot Specification
Compaq Computer Corporation
Phoenix Technologies Ltd.
Intel Corporation
BIOS Boot Specification
1.0 INTRODUCTION 5
1.1 REVISION HISTORY 5
1.2 RELATED DOCUMENTS 5
1.3 PURPOSE 5
1.4 TERMS 6
2.0 OVERVIEW 9
2.1 DESCRIPTION 9
3.0 IPL DEVICES 10
3.1 REQUIREMENTS FOR IPL DEVICES 10
3.1.1 IPL TABLE 10
3.1.2 PRODUCT NAME STRING 10
3.2 BAIDS 11
3.3 DEVICES WITH PNP EXPANSION HEADERS 11
3.4 LEGACY IPL DEVICES 12
3.5 IDENTIFYING IPL DEVICES 13
3.5.1 BAIDS 13
3.5.2 PNP EXPANSION HEADER 13
3.5.3 PCI DEVICES 13
3.5.4 IDENTICAL IPL DEVICES 14
4.0 IPL PRIORITY 15
4.1 MAINTAINING THE IPL PRIORITY 15
4.2 IPL PRIORITY PSEUDOCODE 17
5.0 BCV PRIORITY 18
5.1 INTRODUCTION 18
5.2 INT 13H DEVICE CONTROLLERS 18
5.2.1 ATA DRIVE SUPPORT IN THE BIOS 18
5.2.2 PNP CARDS WITH BCVS 19
5.2.3 LEGACY CARDS WITH OPTION ROMS 19
5.2.4 HARD DRIVE BAID 19
5.2.5 CONTROLLER INSTALLATION GUIDELINES 19
5.2.6 NOTES ON INT 13H DEVICES 20
5.3 INSTALLATION ORDERING 20
5.4 POST PSEUDOCODE 22
6.0 POST SEQUENCE 23
6.1 POWER-ON INITIALIZATION 23
6.1.1 INITIALIZING BAIDS 23
6.1.2 PNP BOOT DEVICES 23
6.2 PNP OPTION ROM INITIALIZATION 23
6.3 CHECK IPL PRIORITY AND BCV PRIORITY 24
6.4 INT 13H DEVICE CONTROLLER INSTALLATION 24
6.4.1 BOOT CONNECTION VECTORS 25
6.4.2 DISCONNECT VECTOR 25
6.4.3 LEGACY ROM SCAN 26
6.4.4 ON-BOARD ATA SUPPORT 26
6.5 INT 19H PROCESSING 26
6.5.1 BOOTING FROM BAIDS 27
6.5.2 BOOTING FROM BEVS 27
6.6 INT 19H PSEUDOCODE 28
6.7 INT 18H PSEUDOCODE 28
6.8 NOTES ON THE POST PROCESS 29
APPENDIX A: DATA STRUCTURES 30
A.1 IPL TABLE AND BCV TABLE ENTRY DATA STRUCTURE 30
A.2 PNP OPTION ROM HEADER 31
A.3 PNP EXPANSION HEADER 31
A.4 PCI DATA STRUCTURE 31
APPENDIX B: RUN-TIME FUNCTIONS (OPTIONAL) 32
FUNCTION 60H - GET VERSION AND INSTALLATION CHECK 32
FUNCTION 61H - GET DEVICE COUNT 33
FUNCTION 62H - GET PRIORITY AND TABLE 34
FUNCTION 63H - SET PRIORITY 35
FUNCTION 64H - GET IPL DEVICE FROM LAST BOOT 36
APPENDIX C: BOOT MENU (OPTIONAL) 37
C.1 BOOT MENU POP-UP 37
C.2 BOOT MENU INT 19H PSEUDOCODE 37
C.3 BOOT FIRST RUN-TIME FUNCTIONS 38
FUNCTION 65H - GET BOOT FIRST 38
FUNCTION 66H - SET BOOT FIRST 38
APPENDIX D: RECOMMENDED BOOT SECTOR CHANGES (OPTIONAL) 39
D.1 USE DL FOR DRIVE NUMBER 39
D.2 INT 18H ON BOOT FAILURE 39
APPENDIX E: PCI WITH MULTIPLE PNP HEADERS (OPTIONAL) 40
E.1 DESCRIPTION 40
E.2 REQUIREMENTS 40
E.3 OPTION ROM INITIALIZATION 40
E.3.1 BEFORE OPTION ROM PLACEMENT 40
E.3.2 PLACING THE PCI OPTION ROM 40
E.3.3 CALLING THE PCI OPTION ROM 41
E.3.4 NO DEVICES PRESENT 41
E.3.5 DEVICES ARE PRESENT 41
E.4 ENUMERATING PNP EXPANSION HEADERS 42
E.5 CALLING THE BCVS 42
2010-06-04
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