Intel Extensible Firmware Interface Instrukcja Użytkownika Strona 93
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EFI System Table
Version 1.10 12/01/02 4-15
//
// Use the EFI Runtime Services Table to get the current time and date.
//
Status = gRT->GetTime (&Time, NULL)
if (EFI_ERROR (Status)) {
return Status;
}
return Status;
}
The following example shows the EFI image entry point for an EFI Driver that does not follow the
EFI Driver Model. Since this driver returns EFI_SUCCESS, it will stay resident in memory after
it exits.
EFI_SYSTEM_TABLE *gST;
EFI_BOOT_SERVICES_TABLE *gBS;
EFI_RUNTIME_SERVICES_TABLE *gRT;
EfiDriverEntryPoint(
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
gST = SystemTable;
gBS = gST->BootServices;
gRT = gST->RuntimeServices;
//
// Implement driver initialization here.
//
return EFI_SUCCESS;
}
The following example shows the EFI image entry point for an EFI Driver that also does not follow
the EFI Driver Model. Since this driver returns EFI_DEVICE_ERROR, it will not stay resident in
memory after it exits.
EFI_SYSTEM_TABLE *gST;
EFI_BOOT_SERVICES_TABLE *gBS;
EFI_RUNTIME_SERVICES_TABLE *gRT;
EfiDriverEntryPoint(
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
gST = SystemTable;
gBS = gST->BootServices;
gRT = gST->RuntimeServices;
- Specification 1
- Acknowledgements 2
- History 3
- Contents 5
- Version 1.10 12/01/02 vii 7
- Version 1.10 12/01/02 ix 9
- Contents 11
- Version 1.10 12/01/02 xi 11
- Version 1.10 12/01/02 xv 15
- Version 1.10 12/01/02 xix 19
- Version 1.10 12/01/02 xxi 21
- Version 1.10 12/01/02 xxv 25
- Introduction 27
- 1-2 12/01/02 Version 1.10 28
- 1.2 Overview 29
- 1.3 Goals 32
- Version 1.10 12/01/02 1-7 33
- 1.4 Target Audience 34
- 1.5 EFI Design Overview 34
- 1.6 EFI Driver Model 35
- 1.6.1 EFI Driver Model Goals 36
- 1.7 Migration Requirements 37
- 1-12 12/01/02 Version 1.10 38
- Version 1.10 12/01/02 1-13 39
- 1.8.5 Pseudo-Code Conventions 40
- 1.8.6 Typographic Conventions 40
- Overview 41
- 2.1.1 EFI Images 42
- 2.1.2 EFI Applications 43
- 2.1.3 EFI OS Loaders 44
- 2.1.4 EFI Drivers 44
- 2.2.1 EFI Services 45
- 2.2.2 Runtime Services 46
- 2.3.1 Data Types 47
- NULL may be 48
- 2.3.2 IA-32 Platforms 49
- 2.3.2.1 Handoff State 50
- 2.3.3 Itanium 51
- -Based Platforms 51
- 2.4 Protocols 52
- Table 2-4. EFI Protocols 54
- 2.5 EFI Driver Model 55
- Figure 2-5. Desktop System 56
- Figure 2-6. Server System 56
- Version 1.10 12/01/02 2-17 57
- 2-18 12/01/02 Version 1.10 58
- Version 1.10 12/01/02 2-19 59
- 2.5.2 Driver Initialization 60
- 2.5.3 Host Bus Controllers 61
- 2.5.4 Device Drivers 63
- 2.5.5 Bus Drivers 64
- Bus Controller 65
- 2.5.6 Platform Components 66
- 2.5.7 Hot-Plug Events 67
- 2.6.1 Required Elements 68
- Version 1.10 12/01/02 2-29 69
- 2-30 12/01/02 Version 1.10 70
- Boot Manager 71
- Descriptor 73
- Table 3-1 Global Variables 75
- 3.4 Boot Mechanisms 77
- 3.4.2.1 Network Booting 78
- 3.4.2.2 Future Boot Media 78
- EFI System Table 79
- 4.2 EFI Table Header 81
- EFI_TABLE_HEADER 81
- 4.3 EFI System Table 82
- EFI_SYSTEM_TABLE 82
- EFI_BOOT_SERVICES 84
- EFI System Table 85
- EFI_RUNTIME_SERVICES 89
- EFI_CONFIGURATION_TABLE 91
- Table 5-2. TPL Usage 101
- Table 5-3. TPL Restrictions 102
- Prototype 103
- Parameters 103
- Related Definitions 103
- 5-6 12/01/02 Version 1.10 104
- Description 105
- Status Codes Returned 106
- ExitBootServices() 117
- Services — Boot Services 125
- Version 1.10 12/01/02 5-27 125
- 5.3 Protocol Handler Services 129
- 5-32 12/01/02 Version 1.10 130
- Version 1.10 12/01/02 5-33 131
- Figure 5-2. Handle Database 132
- Version 1.10 12/01/02 5-35 133
- EFI 1.10 Extension 136
- Examples 152
- 5.4 Image Services 174
- Table 5-9. Image Functions 175
- StartImage() 178
- UnloadImage() 179
- 5-94 12/01/02 Version 1.10 192
- 6.1 Variable Services 194
- GetVariable() 195
- Summary 195
- GetNextVariableName() 197
- SetVariable() 199
- 6.2 Time Services 201
- GetTime() 202
- 6.3 Virtual Memory Services 208
- SetVirtualAddressMap() 209
- ResetSystem() 213
- EFI_LOADED_IMAGE Protocol 217
- Version 1.10 12/01/02 7-3 219
- 8.1 Device Path Overview 221
- 8.2 EFI_DEVICE_PATH Protocol 222
- EFI_DEVICE_PATH Protocol 222
- 8.3 Device Path Nodes 223
- 8.3.2 Hardware Device Path 225
- 8.3.2.1 PCI Device Path 225
- 8.3.2.2 PCCARD Device Path 225
- 8.3.2.4 Vendor Device Path 226
- 8.3.3 ACPI Device Path 227
- Table 8-8. ACPI Device Path 228
- 8.3.4 Messaging Device Path 229
- 8.3.4.1 ATAPI Device Path 229
- 8.3.4.2 SCSI Device Path 230
- 8.3.4.4 1394 Device Path 230
- 8.3.4.5 USB Device Path 231
- 8.3.4.7 I 232
- O Device Path 232
- 8.3.4.9 IPv4 Device Path 232
- 8.3.4.10 IPv6 Device Path 233
- 8.3.4.12 UART Device Path 234
- 8.3.5 Media Device Path 236
- 8.3.5.1 Hard Drive 236
- 8.4.1 Housekeeping Rules 240
- 8.4.3 Rules with ACPI _ADR 241
- 8.4.6 Other Rules 242
- EFI_DRIVER_BINDING_PROTOCOL 243
- Protocol Interface Structure 244
- Version 1.10 12/01/02 9-5 247
- Pseudo Code 249
- 9-8 12/01/02 Version 1.10 250
- Chapter 4 251
- EFI_COMPONENT_NAME_PROTOCOL 289
- 10.1 Console I/O Protocol 295
- SIMPLE_INPUT_INTERFACE 297
- 10.2 Simple Input Protocol 298
- SIMPLE_INPUT 298
- Version 1.10 12/01/02 10-5 299
- SIMPLE_INPUT.ReadKeyStroke() 300
- SIMPLE_TEXT_OUTPUT Protocol 302
- 10.4.1 UGA ROM 318
- 10.4.2 UGA Draw Protocol 319
- 10.4.3 Blt Buffer 319
- 10.4.4 UGA I/O Protocol 320
- 10.4.5 Fallback Mode Driver 320
- 10.5 UGA Draw Protocol 321
- EFI_UGA_DRAW_PROTOCOL 321
- EFI_UGA_DRAW_PROTOCOL.Blt() 325
- 10.7 UGA I/O Protocol 329
- EFI_UGA_IO_PROTOCOL 329
- EFI_SIMPLE_POINTER_PROTOCOL 340
- 10.12 Serial I/O Protocol 349
- SERIAL_IO_PROTOCOL 349
- SERIAL_IO.SetAttributes() 353
- SERIAL_IO.SetControl() 355
- 11.1 LOAD_FILE Protocol 361
- LOAD_FILE Protocol 361
- LOAD_FILE.LoadFile() 362
- 11.2 File System Format 364
- 11.2.1.1 File System Format 365
- 11.2.1.2 File Names 365
- 11.2.1.3 Directory Structure 365
- 11.2.2 Partition Discovery 367
- Partition 369
- Table HDR 369
- 11.2.3 Media Formats 375
- 11.2.3.1 Removable Media 375
- 11.2.3.2 Diskette 375
- 11.2.3.3 Hard Drive 376
- 11.2.3.4 CD-ROM and DVD-ROM 376
- 11.2.3.5 Network 376
- 11.3 File System Protocol 377
- 11.4 EFI_FILE Protocol 380
- EFI_FILE Protocol 380
- EFI_FILE.Open() 382
- EFI_FILE.Write() 387
- EFI_FILE_INFO 393
- 11.5 DISK_IO Protocol 397
- DISK_IO Protocol 397
- 11.6 BLOCK_IO Protocol 401
- BLOCK_IO Protocol 401
- EFI_BLOCK_IO.ReadBlocks() 405
- EFI_BLOCK_IO.WriteBlocks() 407
- UNICODE_COLLATION Protocol 410
- 0 s1 is equivalent to s2 412
- UNICODE_COLLATION.StrLwr() 415
- UNICODE_COLLATION.StrUpr() 416
- UNICODE_COLLATION.FatToStr() 417
- Protocols-PCIBusSupport 419
- Core Chipset Components 420
- Front Side Bus 420
- Device Handle 421
- PCI Local Bus 422
- PCI Host Bus 422
- PCI Root Bridge 422
- PCI Segment 0 424
- PCI Segment 1 424
- 0x26 0x08 Address Length 459
- Image Handle 464
- EFI_LOADED_IMAGE_PROTOCOL 464
- 12.3.2 PCI Bus Drivers 467
- PCI Controller Device Handle 469
- 12.3.2.2 PCI Enumeration 471
- 12.3.3 PCI Device Drivers 471
- 12.4 EFI PCI I/O Protocol 473
- EFI_PCI_IO_PROTOCOL 474
- to the PCI Root Bridge 483
- for the 484
- for the width specified by 486
- , Width, and Count is not 488
- , Width, and Count 495
- , Width, and Count is 495
- EFI_PCI_IO_PROTOCOL.Map() 496
- , and Length 510
- 12.4.1 PCI Device Paths 512
- 12.4.2 PCI Option ROMs 514
- Byte Length Description 515
- to EFI Image 516
- to PCIR Data Structure 516
- PCI Device Driver Image 517
- 12.4.3 Nonvolatile Storage 519
- 12.4.4 PCI Hot-Plug Events 520
- EFI_SCSI_PASS_THRU Protocol 521
- Protocols - USB Support 541
- EFI_USB_HC_PROTOCOL 542
- 14-4 12/01/02 Version 1.10 544
- 14.2 USB Driver Model 574
- 14.2.3 USB Bus Driver 575
- 14.2.3.3 USB Hot-Plug Event 576
- 14.2.4 USB Device Driver 577
- EFI_USB_IO Protocol 578
- Status Code Returned 582
- Protocols — USB Support 599
- 14-62 12/01/02 Version 1.10 602
- 14.2.6 USB Device Paths 604
- EFI_SIMPLE_NETWORK Protocol 607
- IN UINTN BufferSize 624
- EFI_SIMPLE_NETWORK.Receive() 630
- Revision Number 632
- 15.3 PXE Base Code Protocol 635
- EFI_PXE_BASE_CODE Protocol 635
- DHCP Packet Data Types 642
- IP Receive Filter Settings 644
- ARP Cache Entries 644
- EFI_PXE_BASE_CODE.Start() 647
- EFI_PXE_BASE_CODE.Dhcp() 651
- EFI_PXE_BASE_CODE.Discover() 653
- EFI_PXE_BASE_CODE.Mtftp() 656
- EFI_PXE_BASE_CODE.UdpWrite() 660
- EFI_PXE_BASE_CODE.UdpRead() 662
- Protocols — Network Support 665
- Version 1.10 12/01/02 15-59 665
- EFI_BIS.Initialize() 678
- EFI_BIS.Shutdown() 682
- EFI_BIS.GetSignatureInfo() 688
- Digest-Algorithms: SHA-1 697
- EFI_BIS.VerifyBootObject() 701
- 16.1 Overview 715
- EFI_DEBUG_SUPPORT_PROTOCOL 717
- UINT16 Ds; 721
- 16.3 EFI Debugport Protocol 728
- EFI_DEBUGPORT_PROTOCOL 729
- 16.3.2 Debugport Device Path 734
- 16.4.1 Overview 736
- 16.4.3 EFI Image Info 738
- 17.2 Data Format 743
- Block Header 744
- Block Body 744
- Table 17-1 745
- 17.2.3.2 Block Body 747
- 17.3 Compressor Design 748
- 17.3.2 String Info Log 749
- 17.3.2.1 Data Structures 750
- 17.3.2.2 Searching the Tree 751
- 17.3.2.3 Adding String Info 751
- Figure 17-6. Node Split 752
- 17.3.3.3 Code Generation 754
- 17.4 Decompressor Design 755
- 17.5 Decompress Protocol 756
- EFI_DECOMPRESS_PROTOCOL 756
- Protocols-DeviceI/OProtocol 761
- 18.2 DEVICE_IO Protocol 762
- DEVICE_IO Protocol 762
- DEVICE_IO.Map() 768
- DEVICE_IO.AllocateBuffer() 771
- 19.1 Overview 775
- 19.1.2 OS Independent 776
- 19.1.3 EFI Compliant 776
- 19.1.5 Relocatable Image 776
- 19.2 Memory Ordering 777
- 19.4 Natural Indexing 779
- 19.4.3 Constant 780
- 19.4.4 Natural Units 780
- 19.5.1 Direct Operands 781
- 19.5.2 Indirect Operands 781
- 19.5.4 Immediate Operands 782
- 19.6 EBC Instruction Syntax 783
- 19.7 Instruction Encoding 783
- 19.8 EBC Instruction Set 785
- SYNTAX: 786
- DESCRIPTION: 786
- OPERATION: 786
- BEHAVIORS AND RESTRICTIONS: 786
- DESCRIPTION 789
- BEHAVIOR AND RESTRICTIONS: 793
- OPERATION 822
- STORESP 832
- 19.9.1 Calling Outside VM 835
- 19.9.2 Calling Inside VM 835
- 19.9.3 Parameter Passing 835
- 19.9.4 Return Values 835
- 19.9.5 Binary Format 835
- EFI_EBC_PROTOCOL 837
- 19.12 EBC Tools 844
- 19.12.8 Function Returns 845
- 19.12.10 Thunking 846
- 19.12.11 EBC Linker 848
- 19.12.12 Image Loader 848
- 19.12.13 Debug Support 848
- 19.13 VM Exception Handling 849
- 19.14 Option ROM Formats 850
- Appendix A 851
- GUID and Time Formats 851
- A-2 12/01/02 Version 1.10 852
- Appendix B 853
- Console 853
- B.2 SIMPLE_TEXT_OUTPUT 854
- SIMPLE_TEXT_OUTPUT 855
- Version 1.10 12/01/02 B-4 856
- C.1 Example Computer System 857
- C.2 Legacy Floppy 858
- C.3 IDE Disk 859
- C.5 ACPI Terms 862
- Device Path Examples 863
- Version 1.10 12/01/02 C-7 863
- C-8 12/01/02 Version 1.10 864
- Appendix D 865
- Status Codes 865
- Appendix E 867
- 32/64-Bit UNDI Specification 867
- E.1.3 OS Network Stacks 871
- Pro Con 872
- E.2 Overview 873
- E.2.2 UNDI Command Format 879
- E.3 UNDI C Definitions 881
- E.3.1.3 PXE_BUSTYPE 882
- E.3.1.4 PXE_SWAP_UINT16 882
- E.3.1.5 PXE_SWAP_UINT32 883
- E.3.1.6 PXE_SWAP_UINT64 883
- E.3.2 Miscellaneous Macros 884
- E.3.2.1 Miscellaneous 884
- E.3.3 Portability Types 884
- E.3.3.1 PXE_CONST 884
- E.3.3.2 PXE_VOLATILE 884
- E.3.4 Simple Types 886
- E.3.4.1 PXE_BOOL 886
- E.3.4.2 PXE_OPCODE 886
- E.3.4.3 PXE_OPFLAGS 887
- E.3.4.4 PXE_STATFLAGS 892
- E.3.4.5 PXE_STATCODE 896
- E.3.4.6 PXE_IFNUM 896
- E.3.4.7 PXE_CONTROL 897
- E.3.4.8 PXE_FRAME_TYPE 897
- E.3.4.9 PXE_IPV4 897
- E.3.4.10 PXE_IPV6 897
- E.3.4.11 PXE_MAC_ADDR 897
- E.3.4.12 PXE_IFTYPE 898
- E.3.5 Compound Types 899
- E.3.5.1 PXE_HW_UNDI 899
- E.3.5.2 PXE_SW_UNDI 901
- E.3.5.3 PXE_UNDI 901
- E.3.5.4 PXE_CDB 902
- E.3.5.5 PXE_IP_ADDR 903
- E.3.5.6 PXE_DEVICE 903
- E.4 UNDI Commands 904
- Figure E-7. Linked CDBs 905
- Figure E-8. Queued CDBs 906
- E.4.2 Get State 907
- E.4.2.1 Issuing the Command 907
- E.4.3 Start 909
- E.4.3.1 Issuing the Command 909
- Preparing the CPB 910
- E.4.4 Stop 914
- E.4.4.1 Issuing the Command 914
- E.4.5 Get Init Info 915
- E.4.5.1 Issuing the Command 915
- StatFlags 916
- E.4.6 Get Config Info 919
- E.4.6.1 Issuing the Command 919
- E.4.7 Initialize 922
- E.4.7.1 Issuing the Command 922
- Before Using the DB 925
- E.4.8 Reset 926
- E.4.8.1 Issuing the Command 926
- E.4.9 Shutdown 928
- E.4.9.1 Issuing the Command 928
- E.4.10 Interrupt Enables 930
- E.4.11 Receive Filters 932
- E.4.12 Station Address 935
- E.4.13 Statistics 937
- E.4.14 MCast IP To MAC 940
- E.4.15 NvData 942
- Bulk NvData CPB 943
- E.4.16 Get Status 945
- Using the DB 947
- E.4.17 Fill Header 948
- Fragmented Frame 949
- E.4.18 Transmit 951
- OpFlags 952
- Nonfragmented Frame 952
- E.4.19 Receive 955
- Appendix F 959
- Appendix G 961
- G-4 12/01/02 Version 1.10 964
- Appendix H 965
- Compression Source Code 965
- Appendix I 993
- Decompression Source Code 993
- Appendix J 1009
- Opcode Summary 1009
- Appendix K 1011
- Alphabetic Function Lists 1011
- RegisterPeriodicCallback() 1016
- RegisterExceptionCallback() 1016
- References 1043
- ACPI Specification 1047
- WfM Specification 1047
- Glossary 1049
- Glossary 1051
- Index 1069
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