1 /** @file 2 The device path protocol as defined in UEFI 2.0. 3 4 The device path represents a programmatic path to a device, 5 from a software point of view. The path must persist from boot to boot, so 6 it can not contain things like PCI bus numbers that change from boot to boot. 7 8 Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR> 9 This program and the accompanying materials are licensed and made available under 10 the terms and conditions of the BSD License that accompanies this distribution. 11 The full text of the license may be found at 12 http://opensource.org/licenses/bsd-license.php. 13 14 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 15 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 16 17 **/ 18 19 #ifndef __EFI_DEVICE_PATH_PROTOCOL_H__ 20 #define __EFI_DEVICE_PATH_PROTOCOL_H__ 21 22 FILE_LICENCE ( BSD3 ); 23 24 #include <ipxe/efi/Guid/PcAnsi.h> 25 #include <ipxe/efi/IndustryStandard/Bluetooth.h> 26 #include <ipxe/efi/IndustryStandard/Acpi60.h> 27 28 /// 29 /// Device Path protocol. 30 /// 31 #define EFI_DEVICE_PATH_PROTOCOL_GUID \ 32 { \ 33 0x9576e91, 0x6d3f, 0x11d2, {0x8e, 0x39, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b } \ 34 } 35 36 /// 37 /// Device Path guid definition for backward-compatible with EFI1.1. 38 /// 39 #define DEVICE_PATH_PROTOCOL EFI_DEVICE_PATH_PROTOCOL_GUID 40 41 #pragma pack(1) 42 43 /** 44 This protocol can be used on any device handle to obtain generic path/location 45 information concerning the physical device or logical device. If the handle does 46 not logically map to a physical device, the handle may not necessarily support 47 the device path protocol. The device path describes the location of the device 48 the handle is for. The size of the Device Path can be determined from the structures 49 that make up the Device Path. 50 **/ 51 typedef struct { 52 UINT8 Type; ///< 0x01 Hardware Device Path. 53 ///< 0x02 ACPI Device Path. 54 ///< 0x03 Messaging Device Path. 55 ///< 0x04 Media Device Path. 56 ///< 0x05 BIOS Boot Specification Device Path. 57 ///< 0x7F End of Hardware Device Path. 58 59 UINT8 SubType; ///< Varies by Type 60 ///< 0xFF End Entire Device Path, or 61 ///< 0x01 End This Instance of a Device Path and start a new 62 ///< Device Path. 63 64 UINT8 Length[2]; ///< Specific Device Path data. Type and Sub-Type define 65 ///< type of data. Size of data is included in Length. 66 67 } EFI_DEVICE_PATH_PROTOCOL; 68 69 /// 70 /// Device Path protocol definition for backward-compatible with EFI1.1. 71 /// 72 typedef EFI_DEVICE_PATH_PROTOCOL EFI_DEVICE_PATH; 73 74 /// 75 /// Hardware Device Paths. 76 /// 77 #define HARDWARE_DEVICE_PATH 0x01 78 79 /// 80 /// PCI Device Path SubType. 81 /// 82 #define HW_PCI_DP 0x01 83 84 /// 85 /// PCI Device Path. 86 /// 87 typedef struct { 88 EFI_DEVICE_PATH_PROTOCOL Header; 89 /// 90 /// PCI Function Number. 91 /// 92 UINT8 Function; 93 /// 94 /// PCI Device Number. 95 /// 96 UINT8 Device; 97 } PCI_DEVICE_PATH; 98 99 /// 100 /// PCCARD Device Path SubType. 101 /// 102 #define HW_PCCARD_DP 0x02 103 104 /// 105 /// PCCARD Device Path. 106 /// 107 typedef struct { 108 EFI_DEVICE_PATH_PROTOCOL Header; 109 /// 110 /// Function Number (0 = First Function). 111 /// 112 UINT8 FunctionNumber; 113 } PCCARD_DEVICE_PATH; 114 115 /// 116 /// Memory Mapped Device Path SubType. 117 /// 118 #define HW_MEMMAP_DP 0x03 119 120 /// 121 /// Memory Mapped Device Path. 122 /// 123 typedef struct { 124 EFI_DEVICE_PATH_PROTOCOL Header; 125 /// 126 /// EFI_MEMORY_TYPE 127 /// 128 UINT32 MemoryType; 129 /// 130 /// Starting Memory Address. 131 /// 132 EFI_PHYSICAL_ADDRESS StartingAddress; 133 /// 134 /// Ending Memory Address. 135 /// 136 EFI_PHYSICAL_ADDRESS EndingAddress; 137 } MEMMAP_DEVICE_PATH; 138 139 /// 140 /// Hardware Vendor Device Path SubType. 141 /// 142 #define HW_VENDOR_DP 0x04 143 144 /// 145 /// The Vendor Device Path allows the creation of vendor-defined Device Paths. A vendor must 146 /// allocate a Vendor GUID for a Device Path. The Vendor GUID can then be used to define the 147 /// contents on the n bytes that follow in the Vendor Device Path node. 148 /// 149 typedef struct { 150 EFI_DEVICE_PATH_PROTOCOL Header; 151 /// 152 /// Vendor-assigned GUID that defines the data that follows. 153 /// 154 EFI_GUID Guid; 155 /// 156 /// Vendor-defined variable size data. 157 /// 158 } VENDOR_DEVICE_PATH; 159 160 /// 161 /// Controller Device Path SubType. 162 /// 163 #define HW_CONTROLLER_DP 0x05 164 165 /// 166 /// Controller Device Path. 167 /// 168 typedef struct { 169 EFI_DEVICE_PATH_PROTOCOL Header; 170 /// 171 /// Controller number. 172 /// 173 UINT32 ControllerNumber; 174 } CONTROLLER_DEVICE_PATH; 175 176 /// 177 /// BMC Device Path SubType. 178 /// 179 #define HW_BMC_DP 0x06 180 181 /// 182 /// BMC Device Path. 183 /// 184 typedef struct { 185 EFI_DEVICE_PATH_PROTOCOL Header; 186 /// 187 /// Interface Type. 188 /// 189 UINT8 InterfaceType; 190 /// 191 /// Base Address. 192 /// 193 UINT8 BaseAddress[8]; 194 } BMC_DEVICE_PATH; 195 196 /// 197 /// ACPI Device Paths. 198 /// 199 #define ACPI_DEVICE_PATH 0x02 200 201 /// 202 /// ACPI Device Path SubType. 203 /// 204 #define ACPI_DP 0x01 205 typedef struct { 206 EFI_DEVICE_PATH_PROTOCOL Header; 207 /// 208 /// Device's PnP hardware ID stored in a numeric 32-bit 209 /// compressed EISA-type ID. This value must match the 210 /// corresponding _HID in the ACPI name space. 211 /// 212 UINT32 HID; 213 /// 214 /// Unique ID that is required by ACPI if two devices have the 215 /// same _HID. This value must also match the corresponding 216 /// _UID/_HID pair in the ACPI name space. Only the 32-bit 217 /// numeric value type of _UID is supported. Thus, strings must 218 /// not be used for the _UID in the ACPI name space. 219 /// 220 UINT32 UID; 221 } ACPI_HID_DEVICE_PATH; 222 223 /// 224 /// Expanded ACPI Device Path SubType. 225 /// 226 #define ACPI_EXTENDED_DP 0x02 227 typedef struct { 228 EFI_DEVICE_PATH_PROTOCOL Header; 229 /// 230 /// Device's PnP hardware ID stored in a numeric 32-bit 231 /// compressed EISA-type ID. This value must match the 232 /// corresponding _HID in the ACPI name space. 233 /// 234 UINT32 HID; 235 /// 236 /// Unique ID that is required by ACPI if two devices have the 237 /// same _HID. This value must also match the corresponding 238 /// _UID/_HID pair in the ACPI name space. 239 /// 240 UINT32 UID; 241 /// 242 /// Device's compatible PnP hardware ID stored in a numeric 243 /// 32-bit compressed EISA-type ID. This value must match at 244 /// least one of the compatible device IDs returned by the 245 /// corresponding _CID in the ACPI name space. 246 /// 247 UINT32 CID; 248 /// 249 /// Optional variable length _HIDSTR. 250 /// Optional variable length _UIDSTR. 251 /// Optional variable length _CIDSTR. 252 /// 253 } ACPI_EXTENDED_HID_DEVICE_PATH; 254 255 // 256 // EISA ID Macro 257 // EISA ID Definition 32-bits 258 // bits[15:0] - three character compressed ASCII EISA ID. 259 // bits[31:16] - binary number 260 // Compressed ASCII is 5 bits per character 0b00001 = 'A' 0b11010 = 'Z' 261 // 262 #define PNP_EISA_ID_CONST 0x41d0 263 #define EISA_ID(_Name, _Num) ((UINT32)((_Name) | (_Num) << 16)) 264 #define EISA_PNP_ID(_PNPId) (EISA_ID(PNP_EISA_ID_CONST, (_PNPId))) 265 #define EFI_PNP_ID(_PNPId) (EISA_ID(PNP_EISA_ID_CONST, (_PNPId))) 266 267 #define PNP_EISA_ID_MASK 0xffff 268 #define EISA_ID_TO_NUM(_Id) ((_Id) >> 16) 269 270 /// 271 /// ACPI _ADR Device Path SubType. 272 /// 273 #define ACPI_ADR_DP 0x03 274 275 /// 276 /// The _ADR device path is used to contain video output device attributes to support the Graphics 277 /// Output Protocol. The device path can contain multiple _ADR entries if multiple video output 278 /// devices are displaying the same output. 279 /// 280 typedef struct { 281 EFI_DEVICE_PATH_PROTOCOL Header; 282 /// 283 /// _ADR value. For video output devices the value of this 284 /// field comes from Table B-2 of the ACPI 3.0 specification. At 285 /// least one _ADR value is required. 286 /// 287 UINT32 ADR; 288 // 289 // This device path may optionally contain more than one _ADR entry. 290 // 291 } ACPI_ADR_DEVICE_PATH; 292 293 #define ACPI_ADR_DISPLAY_TYPE_OTHER 0 294 #define ACPI_ADR_DISPLAY_TYPE_VGA 1 295 #define ACPI_ADR_DISPLAY_TYPE_TV 2 296 #define ACPI_ADR_DISPLAY_TYPE_EXTERNAL_DIGITAL 3 297 #define ACPI_ADR_DISPLAY_TYPE_INTERNAL_DIGITAL 4 298 299 #define ACPI_DISPLAY_ADR(_DeviceIdScheme, _HeadId, _NonVgaOutput, _BiosCanDetect, _VendorInfo, _Type, _Port, _Index) \ 300 ((UINT32)( ((UINT32)((_DeviceIdScheme) & 0x1) << 31) | \ 301 (((_HeadId) & 0x7) << 18) | \ 302 (((_NonVgaOutput) & 0x1) << 17) | \ 303 (((_BiosCanDetect) & 0x1) << 16) | \ 304 (((_VendorInfo) & 0xf) << 12) | \ 305 (((_Type) & 0xf) << 8) | \ 306 (((_Port) & 0xf) << 4) | \ 307 ((_Index) & 0xf) )) 308 309 /// 310 /// Messaging Device Paths. 311 /// This Device Path is used to describe the connection of devices outside the resource domain of the 312 /// system. This Device Path can describe physical messaging information like SCSI ID, or abstract 313 /// information like networking protocol IP addresses. 314 /// 315 #define MESSAGING_DEVICE_PATH 0x03 316 317 /// 318 /// ATAPI Device Path SubType 319 /// 320 #define MSG_ATAPI_DP 0x01 321 typedef struct { 322 EFI_DEVICE_PATH_PROTOCOL Header; 323 /// 324 /// Set to zero for primary, or one for secondary. 325 /// 326 UINT8 PrimarySecondary; 327 /// 328 /// Set to zero for master, or one for slave mode. 329 /// 330 UINT8 SlaveMaster; 331 /// 332 /// Logical Unit Number. 333 /// 334 UINT16 Lun; 335 } ATAPI_DEVICE_PATH; 336 337 /// 338 /// SCSI Device Path SubType. 339 /// 340 #define MSG_SCSI_DP 0x02 341 typedef struct { 342 EFI_DEVICE_PATH_PROTOCOL Header; 343 /// 344 /// Target ID on the SCSI bus (PUN). 345 /// 346 UINT16 Pun; 347 /// 348 /// Logical Unit Number (LUN). 349 /// 350 UINT16 Lun; 351 } SCSI_DEVICE_PATH; 352 353 /// 354 /// Fibre Channel SubType. 355 /// 356 #define MSG_FIBRECHANNEL_DP 0x03 357 typedef struct { 358 EFI_DEVICE_PATH_PROTOCOL Header; 359 /// 360 /// Reserved for the future. 361 /// 362 UINT32 Reserved; 363 /// 364 /// Fibre Channel World Wide Number. 365 /// 366 UINT64 WWN; 367 /// 368 /// Fibre Channel Logical Unit Number. 369 /// 370 UINT64 Lun; 371 } FIBRECHANNEL_DEVICE_PATH; 372 373 /// 374 /// Fibre Channel Ex SubType. 375 /// 376 #define MSG_FIBRECHANNELEX_DP 0x15 377 typedef struct { 378 EFI_DEVICE_PATH_PROTOCOL Header; 379 /// 380 /// Reserved for the future. 381 /// 382 UINT32 Reserved; 383 /// 384 /// 8 byte array containing Fibre Channel End Device Port Name. 385 /// 386 UINT8 WWN[8]; 387 /// 388 /// 8 byte array containing Fibre Channel Logical Unit Number. 389 /// 390 UINT8 Lun[8]; 391 } FIBRECHANNELEX_DEVICE_PATH; 392 393 /// 394 /// 1394 Device Path SubType 395 /// 396 #define MSG_1394_DP 0x04 397 typedef struct { 398 EFI_DEVICE_PATH_PROTOCOL Header; 399 /// 400 /// Reserved for the future. 401 /// 402 UINT32 Reserved; 403 /// 404 /// 1394 Global Unique ID (GUID). 405 /// 406 UINT64 Guid; 407 } F1394_DEVICE_PATH; 408 409 /// 410 /// USB Device Path SubType. 411 /// 412 #define MSG_USB_DP 0x05 413 typedef struct { 414 EFI_DEVICE_PATH_PROTOCOL Header; 415 /// 416 /// USB Parent Port Number. 417 /// 418 UINT8 ParentPortNumber; 419 /// 420 /// USB Interface Number. 421 /// 422 UINT8 InterfaceNumber; 423 } USB_DEVICE_PATH; 424 425 /// 426 /// USB Class Device Path SubType. 427 /// 428 #define MSG_USB_CLASS_DP 0x0f 429 typedef struct { 430 EFI_DEVICE_PATH_PROTOCOL Header; 431 /// 432 /// Vendor ID assigned by USB-IF. A value of 0xFFFF will 433 /// match any Vendor ID. 434 /// 435 UINT16 VendorId; 436 /// 437 /// Product ID assigned by USB-IF. A value of 0xFFFF will 438 /// match any Product ID. 439 /// 440 UINT16 ProductId; 441 /// 442 /// The class code assigned by the USB-IF. A value of 0xFF 443 /// will match any class code. 444 /// 445 UINT8 DeviceClass; 446 /// 447 /// The subclass code assigned by the USB-IF. A value of 448 /// 0xFF will match any subclass code. 449 /// 450 UINT8 DeviceSubClass; 451 /// 452 /// The protocol code assigned by the USB-IF. A value of 453 /// 0xFF will match any protocol code. 454 /// 455 UINT8 DeviceProtocol; 456 } USB_CLASS_DEVICE_PATH; 457 458 /// 459 /// USB WWID Device Path SubType. 460 /// 461 #define MSG_USB_WWID_DP 0x10 462 463 /// 464 /// This device path describes a USB device using its serial number. 465 /// 466 typedef struct { 467 EFI_DEVICE_PATH_PROTOCOL Header; 468 /// 469 /// USB interface number. 470 /// 471 UINT16 InterfaceNumber; 472 /// 473 /// USB vendor id of the device. 474 /// 475 UINT16 VendorId; 476 /// 477 /// USB product id of the device. 478 /// 479 UINT16 ProductId; 480 /// 481 /// Last 64-or-fewer UTF-16 characters of the USB 482 /// serial number. The length of the string is 483 /// determined by the Length field less the offset of the 484 /// Serial Number field (10) 485 /// 486 /// CHAR16 SerialNumber[...]; 487 } USB_WWID_DEVICE_PATH; 488 489 /// 490 /// Device Logical Unit SubType. 491 /// 492 #define MSG_DEVICE_LOGICAL_UNIT_DP 0x11 493 typedef struct { 494 EFI_DEVICE_PATH_PROTOCOL Header; 495 /// 496 /// Logical Unit Number for the interface. 497 /// 498 UINT8 Lun; 499 } DEVICE_LOGICAL_UNIT_DEVICE_PATH; 500 501 /// 502 /// SATA Device Path SubType. 503 /// 504 #define MSG_SATA_DP 0x12 505 typedef struct { 506 EFI_DEVICE_PATH_PROTOCOL Header; 507 /// 508 /// The HBA port number that facilitates the connection to the 509 /// device or a port multiplier. The value 0xFFFF is reserved. 510 /// 511 UINT16 HBAPortNumber; 512 /// 513 /// The Port multiplier port number that facilitates the connection 514 /// to the device. Must be set to 0xFFFF if the device is directly 515 /// connected to the HBA. 516 /// 517 UINT16 PortMultiplierPortNumber; 518 /// 519 /// Logical Unit Number. 520 /// 521 UINT16 Lun; 522 } SATA_DEVICE_PATH; 523 524 /// 525 /// Flag for if the device is directly connected to the HBA. 526 /// 527 #define SATA_HBA_DIRECT_CONNECT_FLAG 0x8000 528 529 /// 530 /// I2O Device Path SubType. 531 /// 532 #define MSG_I2O_DP 0x06 533 typedef struct { 534 EFI_DEVICE_PATH_PROTOCOL Header; 535 /// 536 /// Target ID (TID) for a device. 537 /// 538 UINT32 Tid; 539 } I2O_DEVICE_PATH; 540 541 /// 542 /// MAC Address Device Path SubType. 543 /// 544 #define MSG_MAC_ADDR_DP 0x0b 545 typedef struct { 546 EFI_DEVICE_PATH_PROTOCOL Header; 547 /// 548 /// The MAC address for a network interface padded with 0s. 549 /// 550 EFI_MAC_ADDRESS MacAddress; 551 /// 552 /// Network interface type(i.e. 802.3, FDDI). 553 /// 554 UINT8 IfType; 555 } MAC_ADDR_DEVICE_PATH; 556 557 /// 558 /// IPv4 Device Path SubType 559 /// 560 #define MSG_IPv4_DP 0x0c 561 typedef struct { 562 EFI_DEVICE_PATH_PROTOCOL Header; 563 /// 564 /// The local IPv4 address. 565 /// 566 EFI_IPv4_ADDRESS LocalIpAddress; 567 /// 568 /// The remote IPv4 address. 569 /// 570 EFI_IPv4_ADDRESS RemoteIpAddress; 571 /// 572 /// The local port number. 573 /// 574 UINT16 LocalPort; 575 /// 576 /// The remote port number. 577 /// 578 UINT16 RemotePort; 579 /// 580 /// The network protocol(i.e. UDP, TCP). 581 /// 582 UINT16 Protocol; 583 /// 584 /// 0x00 - The Source IP Address was assigned though DHCP. 585 /// 0x01 - The Source IP Address is statically bound. 586 /// 587 BOOLEAN StaticIpAddress; 588 /// 589 /// The gateway IP address 590 /// 591 EFI_IPv4_ADDRESS GatewayIpAddress; 592 /// 593 /// The subnet mask 594 /// 595 EFI_IPv4_ADDRESS SubnetMask; 596 } IPv4_DEVICE_PATH; 597 598 /// 599 /// IPv6 Device Path SubType. 600 /// 601 #define MSG_IPv6_DP 0x0d 602 typedef struct { 603 EFI_DEVICE_PATH_PROTOCOL Header; 604 /// 605 /// The local IPv6 address. 606 /// 607 EFI_IPv6_ADDRESS LocalIpAddress; 608 /// 609 /// The remote IPv6 address. 610 /// 611 EFI_IPv6_ADDRESS RemoteIpAddress; 612 /// 613 /// The local port number. 614 /// 615 UINT16 LocalPort; 616 /// 617 /// The remote port number. 618 /// 619 UINT16 RemotePort; 620 /// 621 /// The network protocol(i.e. UDP, TCP). 622 /// 623 UINT16 Protocol; 624 /// 625 /// 0x00 - The Local IP Address was manually configured. 626 /// 0x01 - The Local IP Address is assigned through IPv6 627 /// stateless auto-configuration. 628 /// 0x02 - The Local IP Address is assigned through IPv6 629 /// stateful configuration. 630 /// 631 UINT8 IpAddressOrigin; 632 /// 633 /// The prefix length 634 /// 635 UINT8 PrefixLength; 636 /// 637 /// The gateway IP address 638 /// 639 EFI_IPv6_ADDRESS GatewayIpAddress; 640 } IPv6_DEVICE_PATH; 641 642 /// 643 /// InfiniBand Device Path SubType. 644 /// 645 #define MSG_INFINIBAND_DP 0x09 646 typedef struct { 647 EFI_DEVICE_PATH_PROTOCOL Header; 648 /// 649 /// Flags to help identify/manage InfiniBand device path elements: 650 /// Bit 0 - IOC/Service (0b = IOC, 1b = Service). 651 /// Bit 1 - Extend Boot Environment. 652 /// Bit 2 - Console Protocol. 653 /// Bit 3 - Storage Protocol. 654 /// Bit 4 - Network Protocol. 655 /// All other bits are reserved. 656 /// 657 UINT32 ResourceFlags; 658 /// 659 /// 128-bit Global Identifier for remote fabric port. 660 /// 661 UINT8 PortGid[16]; 662 /// 663 /// 64-bit unique identifier to remote IOC or server process. 664 /// Interpretation of field specified by Resource Flags (bit 0). 665 /// 666 UINT64 ServiceId; 667 /// 668 /// 64-bit persistent ID of remote IOC port. 669 /// 670 UINT64 TargetPortId; 671 /// 672 /// 64-bit persistent ID of remote device. 673 /// 674 UINT64 DeviceId; 675 } INFINIBAND_DEVICE_PATH; 676 677 #define INFINIBAND_RESOURCE_FLAG_IOC_SERVICE 0x01 678 #define INFINIBAND_RESOURCE_FLAG_EXTENDED_BOOT_ENVIRONMENT 0x02 679 #define INFINIBAND_RESOURCE_FLAG_CONSOLE_PROTOCOL 0x04 680 #define INFINIBAND_RESOURCE_FLAG_STORAGE_PROTOCOL 0x08 681 #define INFINIBAND_RESOURCE_FLAG_NETWORK_PROTOCOL 0x10 682 683 /// 684 /// UART Device Path SubType. 685 /// 686 #define MSG_UART_DP 0x0e 687 typedef struct { 688 EFI_DEVICE_PATH_PROTOCOL Header; 689 /// 690 /// Reserved. 691 /// 692 UINT32 Reserved; 693 /// 694 /// The baud rate setting for the UART style device. A value of 0 695 /// means that the device's default baud rate will be used. 696 /// 697 UINT64 BaudRate; 698 /// 699 /// The number of data bits for the UART style device. A value 700 /// of 0 means that the device's default number of data bits will be used. 701 /// 702 UINT8 DataBits; 703 /// 704 /// The parity setting for the UART style device. 705 /// Parity 0x00 - Default Parity. 706 /// Parity 0x01 - No Parity. 707 /// Parity 0x02 - Even Parity. 708 /// Parity 0x03 - Odd Parity. 709 /// Parity 0x04 - Mark Parity. 710 /// Parity 0x05 - Space Parity. 711 /// 712 UINT8 Parity; 713 /// 714 /// The number of stop bits for the UART style device. 715 /// Stop Bits 0x00 - Default Stop Bits. 716 /// Stop Bits 0x01 - 1 Stop Bit. 717 /// Stop Bits 0x02 - 1.5 Stop Bits. 718 /// Stop Bits 0x03 - 2 Stop Bits. 719 /// 720 UINT8 StopBits; 721 } UART_DEVICE_PATH; 722 723 // 724 // Use VENDOR_DEVICE_PATH struct 725 // 726 #define MSG_VENDOR_DP 0x0a 727 typedef VENDOR_DEVICE_PATH VENDOR_DEFINED_DEVICE_PATH; 728 729 #define DEVICE_PATH_MESSAGING_PC_ANSI EFI_PC_ANSI_GUID 730 #define DEVICE_PATH_MESSAGING_VT_100 EFI_VT_100_GUID 731 #define DEVICE_PATH_MESSAGING_VT_100_PLUS EFI_VT_100_PLUS_GUID 732 #define DEVICE_PATH_MESSAGING_VT_UTF8 EFI_VT_UTF8_GUID 733 734 /// 735 /// A new device path node is defined to declare flow control characteristics. 736 /// UART Flow Control Messaging Device Path 737 /// 738 typedef struct { 739 EFI_DEVICE_PATH_PROTOCOL Header; 740 /// 741 /// DEVICE_PATH_MESSAGING_UART_FLOW_CONTROL GUID. 742 /// 743 EFI_GUID Guid; 744 /// 745 /// Bitmap of supported flow control types. 746 /// Bit 0 set indicates hardware flow control. 747 /// Bit 1 set indicates Xon/Xoff flow control. 748 /// All other bits are reserved and are clear. 749 /// 750 UINT32 FlowControlMap; 751 } UART_FLOW_CONTROL_DEVICE_PATH; 752 753 #define UART_FLOW_CONTROL_HARDWARE 0x00000001 754 #define UART_FLOW_CONTROL_XON_XOFF 0x00000010 755 756 #define DEVICE_PATH_MESSAGING_SAS EFI_SAS_DEVICE_PATH_GUID 757 /// 758 /// Serial Attached SCSI (SAS) Device Path. 759 /// 760 typedef struct { 761 EFI_DEVICE_PATH_PROTOCOL Header; 762 /// 763 /// DEVICE_PATH_MESSAGING_SAS GUID. 764 /// 765 EFI_GUID Guid; 766 /// 767 /// Reserved for future use. 768 /// 769 UINT32 Reserved; 770 /// 771 /// SAS Address for Serial Attached SCSI Target. 772 /// 773 UINT64 SasAddress; 774 /// 775 /// SAS Logical Unit Number. 776 /// 777 UINT64 Lun; 778 /// 779 /// More Information about the device and its interconnect. 780 /// 781 UINT16 DeviceTopology; 782 /// 783 /// Relative Target Port (RTP). 784 /// 785 UINT16 RelativeTargetPort; 786 } SAS_DEVICE_PATH; 787 788 /// 789 /// Serial Attached SCSI (SAS) Ex Device Path SubType 790 /// 791 #define MSG_SASEX_DP 0x16 792 typedef struct { 793 EFI_DEVICE_PATH_PROTOCOL Header; 794 /// 795 /// 8-byte array of the SAS Address for Serial Attached SCSI Target Port. 796 /// 797 UINT8 SasAddress[8]; 798 /// 799 /// 8-byte array of the SAS Logical Unit Number. 800 /// 801 UINT8 Lun[8]; 802 /// 803 /// More Information about the device and its interconnect. 804 /// 805 UINT16 DeviceTopology; 806 /// 807 /// Relative Target Port (RTP). 808 /// 809 UINT16 RelativeTargetPort; 810 } SASEX_DEVICE_PATH; 811 812 /// 813 /// NvmExpress Namespace Device Path SubType. 814 /// 815 #define MSG_NVME_NAMESPACE_DP 0x17 816 typedef struct { 817 EFI_DEVICE_PATH_PROTOCOL Header; 818 UINT32 NamespaceId; 819 UINT64 NamespaceUuid; 820 } NVME_NAMESPACE_DEVICE_PATH; 821 822 /// 823 /// Uniform Resource Identifiers (URI) Device Path SubType 824 /// 825 #define MSG_URI_DP 0x18 826 typedef struct { 827 EFI_DEVICE_PATH_PROTOCOL Header; 828 /// 829 /// Instance of the URI pursuant to RFC 3986. 830 /// 831 CHAR8 Uri[]; 832 } URI_DEVICE_PATH; 833 834 /// 835 /// Universal Flash Storage (UFS) Device Path SubType. 836 /// 837 #define MSG_UFS_DP 0x19 838 typedef struct { 839 EFI_DEVICE_PATH_PROTOCOL Header; 840 /// 841 /// Target ID on the UFS bus (PUN). 842 /// 843 UINT8 Pun; 844 /// 845 /// Logical Unit Number (LUN). 846 /// 847 UINT8 Lun; 848 } UFS_DEVICE_PATH; 849 850 /// 851 /// SD (Secure Digital) Device Path SubType. 852 /// 853 #define MSG_SD_DP 0x1A 854 typedef struct { 855 EFI_DEVICE_PATH_PROTOCOL Header; 856 UINT8 SlotNumber; 857 } SD_DEVICE_PATH; 858 859 /// 860 /// EMMC (Embedded MMC) Device Path SubType. 861 /// 862 #define MSG_EMMC_DP 0x1D 863 typedef struct { 864 EFI_DEVICE_PATH_PROTOCOL Header; 865 UINT8 SlotNumber; 866 } EMMC_DEVICE_PATH; 867 868 /// 869 /// iSCSI Device Path SubType 870 /// 871 #define MSG_ISCSI_DP 0x13 872 typedef struct { 873 EFI_DEVICE_PATH_PROTOCOL Header; 874 /// 875 /// Network Protocol (0 = TCP, 1+ = reserved). 876 /// 877 UINT16 NetworkProtocol; 878 /// 879 /// iSCSI Login Options. 880 /// 881 UINT16 LoginOption; 882 /// 883 /// iSCSI Logical Unit Number. 884 /// 885 UINT64 Lun; 886 /// 887 /// iSCSI Target Portal group tag the initiator intends 888 /// to establish a session with. 889 /// 890 UINT16 TargetPortalGroupTag; 891 /// 892 /// iSCSI NodeTarget Name. The length of the name 893 /// is determined by subtracting the offset of this field from Length. 894 /// 895 /// CHAR8 iSCSI Target Name. 896 } ISCSI_DEVICE_PATH; 897 898 #define ISCSI_LOGIN_OPTION_NO_HEADER_DIGEST 0x0000 899 #define ISCSI_LOGIN_OPTION_HEADER_DIGEST_USING_CRC32C 0x0002 900 #define ISCSI_LOGIN_OPTION_NO_DATA_DIGEST 0x0000 901 #define ISCSI_LOGIN_OPTION_DATA_DIGEST_USING_CRC32C 0x0008 902 #define ISCSI_LOGIN_OPTION_AUTHMETHOD_CHAP 0x0000 903 #define ISCSI_LOGIN_OPTION_AUTHMETHOD_NON 0x1000 904 #define ISCSI_LOGIN_OPTION_CHAP_BI 0x0000 905 #define ISCSI_LOGIN_OPTION_CHAP_UNI 0x2000 906 907 /// 908 /// VLAN Device Path SubType. 909 /// 910 #define MSG_VLAN_DP 0x14 911 typedef struct { 912 EFI_DEVICE_PATH_PROTOCOL Header; 913 /// 914 /// VLAN identifier (0-4094). 915 /// 916 UINT16 VlanId; 917 } VLAN_DEVICE_PATH; 918 919 /// 920 /// Bluetooth Device Path SubType. 921 /// 922 #define MSG_BLUETOOTH_DP 0x1b 923 typedef struct { 924 EFI_DEVICE_PATH_PROTOCOL Header; 925 /// 926 /// 48bit Bluetooth device address. 927 /// 928 BLUETOOTH_ADDRESS BD_ADDR; 929 } BLUETOOTH_DEVICE_PATH; 930 931 /// 932 /// Wi-Fi Device Path SubType. 933 /// 934 #define MSG_WIFI_DP 0x1C 935 typedef struct { 936 EFI_DEVICE_PATH_PROTOCOL Header; 937 /// 938 /// Service set identifier. A 32-byte octets string. 939 /// 940 UINT8 SSId[32]; 941 } WIFI_DEVICE_PATH; 942 943 // 944 // Media Device Path 945 // 946 #define MEDIA_DEVICE_PATH 0x04 947 948 /// 949 /// Hard Drive Media Device Path SubType. 950 /// 951 #define MEDIA_HARDDRIVE_DP 0x01 952 953 /// 954 /// The Hard Drive Media Device Path is used to represent a partition on a hard drive. 955 /// 956 typedef struct { 957 EFI_DEVICE_PATH_PROTOCOL Header; 958 /// 959 /// Describes the entry in a partition table, starting with entry 1. 960 /// Partition number zero represents the entire device. Valid 961 /// partition numbers for a MBR partition are [1, 4]. Valid 962 /// partition numbers for a GPT partition are [1, NumberOfPartitionEntries]. 963 /// 964 UINT32 PartitionNumber; 965 /// 966 /// Starting LBA of the partition on the hard drive. 967 /// 968 UINT64 PartitionStart; 969 /// 970 /// Size of the partition in units of Logical Blocks. 971 /// 972 UINT64 PartitionSize; 973 /// 974 /// Signature unique to this partition: 975 /// If SignatureType is 0, this field has to be initialized with 16 zeros. 976 /// If SignatureType is 1, the MBR signature is stored in the first 4 bytes of this field. 977 /// The other 12 bytes are initialized with zeros. 978 /// If SignatureType is 2, this field contains a 16 byte signature. 979 /// 980 UINT8 Signature[16]; 981 /// 982 /// Partition Format: (Unused values reserved). 983 /// 0x01 - PC-AT compatible legacy MBR. 984 /// 0x02 - GUID Partition Table. 985 /// 986 UINT8 MBRType; 987 /// 988 /// Type of Disk Signature: (Unused values reserved). 989 /// 0x00 - No Disk Signature. 990 /// 0x01 - 32-bit signature from address 0x1b8 of the type 0x01 MBR. 991 /// 0x02 - GUID signature. 992 /// 993 UINT8 SignatureType; 994 } HARDDRIVE_DEVICE_PATH; 995 996 #define MBR_TYPE_PCAT 0x01 997 #define MBR_TYPE_EFI_PARTITION_TABLE_HEADER 0x02 998 999 #define NO_DISK_SIGNATURE 0x00 1000 #define SIGNATURE_TYPE_MBR 0x01 1001 #define SIGNATURE_TYPE_GUID 0x02 1002 1003 /// 1004 /// CD-ROM Media Device Path SubType. 1005 /// 1006 #define MEDIA_CDROM_DP 0x02 1007 1008 /// 1009 /// The CD-ROM Media Device Path is used to define a system partition that exists on a CD-ROM. 1010 /// 1011 typedef struct { 1012 EFI_DEVICE_PATH_PROTOCOL Header; 1013 /// 1014 /// Boot Entry number from the Boot Catalog. The Initial/Default entry is defined as zero. 1015 /// 1016 UINT32 BootEntry; 1017 /// 1018 /// Starting RBA of the partition on the medium. CD-ROMs use Relative logical Block Addressing. 1019 /// 1020 UINT64 PartitionStart; 1021 /// 1022 /// Size of the partition in units of Blocks, also called Sectors. 1023 /// 1024 UINT64 PartitionSize; 1025 } CDROM_DEVICE_PATH; 1026 1027 // 1028 // Use VENDOR_DEVICE_PATH struct 1029 // 1030 #define MEDIA_VENDOR_DP 0x03 ///< Media vendor device path subtype. 1031 1032 /// 1033 /// File Path Media Device Path SubType 1034 /// 1035 #define MEDIA_FILEPATH_DP 0x04 1036 typedef struct { 1037 EFI_DEVICE_PATH_PROTOCOL Header; 1038 /// 1039 /// A NULL-terminated Path string including directory and file names. 1040 /// 1041 CHAR16 PathName[1]; 1042 } FILEPATH_DEVICE_PATH; 1043 1044 #define SIZE_OF_FILEPATH_DEVICE_PATH OFFSET_OF(FILEPATH_DEVICE_PATH,PathName) 1045 1046 /// 1047 /// Media Protocol Device Path SubType. 1048 /// 1049 #define MEDIA_PROTOCOL_DP 0x05 1050 1051 /// 1052 /// The Media Protocol Device Path is used to denote the protocol that is being 1053 /// used in a device path at the location of the path specified. 1054 /// Many protocols are inherent to the style of device path. 1055 /// 1056 typedef struct { 1057 EFI_DEVICE_PATH_PROTOCOL Header; 1058 /// 1059 /// The ID of the protocol. 1060 /// 1061 EFI_GUID Protocol; 1062 } MEDIA_PROTOCOL_DEVICE_PATH; 1063 1064 /// 1065 /// PIWG Firmware File SubType. 1066 /// 1067 #define MEDIA_PIWG_FW_FILE_DP 0x06 1068 1069 /// 1070 /// This device path is used by systems implementing the UEFI PI Specification 1.0 to describe a firmware file. 1071 /// 1072 typedef struct { 1073 EFI_DEVICE_PATH_PROTOCOL Header; 1074 /// 1075 /// Firmware file name 1076 /// 1077 EFI_GUID FvFileName; 1078 } MEDIA_FW_VOL_FILEPATH_DEVICE_PATH; 1079 1080 /// 1081 /// PIWG Firmware Volume Device Path SubType. 1082 /// 1083 #define MEDIA_PIWG_FW_VOL_DP 0x07 1084 1085 /// 1086 /// This device path is used by systems implementing the UEFI PI Specification 1.0 to describe a firmware volume. 1087 /// 1088 typedef struct { 1089 EFI_DEVICE_PATH_PROTOCOL Header; 1090 /// 1091 /// Firmware volume name. 1092 /// 1093 EFI_GUID FvName; 1094 } MEDIA_FW_VOL_DEVICE_PATH; 1095 1096 /// 1097 /// Media relative offset range device path. 1098 /// 1099 #define MEDIA_RELATIVE_OFFSET_RANGE_DP 0x08 1100 1101 /// 1102 /// Used to describe the offset range of media relative. 1103 /// 1104 typedef struct { 1105 EFI_DEVICE_PATH_PROTOCOL Header; 1106 UINT32 Reserved; 1107 UINT64 StartingOffset; 1108 UINT64 EndingOffset; 1109 } MEDIA_RELATIVE_OFFSET_RANGE_DEVICE_PATH; 1110 1111 /// 1112 /// This GUID defines a RAM Disk supporting a raw disk format in volatile memory. 1113 /// 1114 #define EFI_VIRTUAL_DISK_GUID EFI_ACPI_6_0_NFIT_GUID_RAM_DISK_SUPPORTING_VIRTUAL_DISK_REGION_VOLATILE 1115 1116 extern EFI_GUID gEfiVirtualDiskGuid; 1117 1118 /// 1119 /// This GUID defines a RAM Disk supporting an ISO image in volatile memory. 1120 /// 1121 #define EFI_VIRTUAL_CD_GUID EFI_ACPI_6_0_NFIT_GUID_RAM_DISK_SUPPORTING_VIRTUAL_CD_REGION_VOLATILE 1122 1123 extern EFI_GUID gEfiVirtualCdGuid; 1124 1125 /// 1126 /// This GUID defines a RAM Disk supporting a raw disk format in persistent memory. 1127 /// 1128 #define EFI_PERSISTENT_VIRTUAL_DISK_GUID EFI_ACPI_6_0_NFIT_GUID_RAM_DISK_SUPPORTING_VIRTUAL_DISK_REGION_PERSISTENT 1129 1130 extern EFI_GUID gEfiPersistentVirtualDiskGuid; 1131 1132 /// 1133 /// This GUID defines a RAM Disk supporting an ISO image in persistent memory. 1134 /// 1135 #define EFI_PERSISTENT_VIRTUAL_CD_GUID EFI_ACPI_6_0_NFIT_GUID_RAM_DISK_SUPPORTING_VIRTUAL_CD_REGION_PERSISTENT 1136 1137 extern EFI_GUID gEfiPersistentVirtualCdGuid; 1138 1139 /// 1140 /// Media ram disk device path. 1141 /// 1142 #define MEDIA_RAM_DISK_DP 0x09 1143 1144 /// 1145 /// Used to describe the ram disk device path. 1146 /// 1147 typedef struct { 1148 EFI_DEVICE_PATH_PROTOCOL Header; 1149 /// 1150 /// Starting Memory Address. 1151 /// 1152 UINT32 StartingAddr[2]; 1153 /// 1154 /// Ending Memory Address. 1155 /// 1156 UINT32 EndingAddr[2]; 1157 /// 1158 /// GUID that defines the type of the RAM Disk. 1159 /// 1160 EFI_GUID TypeGuid; 1161 /// 1162 /// RAM Diskinstance number, if supported. The default value is zero. 1163 /// 1164 UINT16 Instance; 1165 } MEDIA_RAM_DISK_DEVICE_PATH; 1166 1167 /// 1168 /// BIOS Boot Specification Device Path. 1169 /// 1170 #define BBS_DEVICE_PATH 0x05 1171 1172 /// 1173 /// BIOS Boot Specification Device Path SubType. 1174 /// 1175 #define BBS_BBS_DP 0x01 1176 1177 /// 1178 /// This Device Path is used to describe the booting of non-EFI-aware operating systems. 1179 /// 1180 typedef struct { 1181 EFI_DEVICE_PATH_PROTOCOL Header; 1182 /// 1183 /// Device Type as defined by the BIOS Boot Specification. 1184 /// 1185 UINT16 DeviceType; 1186 /// 1187 /// Status Flags as defined by the BIOS Boot Specification. 1188 /// 1189 UINT16 StatusFlag; 1190 /// 1191 /// Null-terminated ASCII string that describes the boot device to a user. 1192 /// 1193 CHAR8 String[1]; 1194 } BBS_BBS_DEVICE_PATH; 1195 1196 // 1197 // DeviceType definitions - from BBS specification 1198 // 1199 #define BBS_TYPE_FLOPPY 0x01 1200 #define BBS_TYPE_HARDDRIVE 0x02 1201 #define BBS_TYPE_CDROM 0x03 1202 #define BBS_TYPE_PCMCIA 0x04 1203 #define BBS_TYPE_USB 0x05 1204 #define BBS_TYPE_EMBEDDED_NETWORK 0x06 1205 #define BBS_TYPE_BEV 0x80 1206 #define BBS_TYPE_UNKNOWN 0xFF 1207 1208 1209 /// 1210 /// Union of all possible Device Paths and pointers to Device Paths. 1211 /// 1212 typedef union { 1213 EFI_DEVICE_PATH_PROTOCOL DevPath; 1214 PCI_DEVICE_PATH Pci; 1215 PCCARD_DEVICE_PATH PcCard; 1216 MEMMAP_DEVICE_PATH MemMap; 1217 VENDOR_DEVICE_PATH Vendor; 1218 1219 CONTROLLER_DEVICE_PATH Controller; 1220 BMC_DEVICE_PATH Bmc; 1221 ACPI_HID_DEVICE_PATH Acpi; 1222 ACPI_EXTENDED_HID_DEVICE_PATH ExtendedAcpi; 1223 ACPI_ADR_DEVICE_PATH AcpiAdr; 1224 1225 ATAPI_DEVICE_PATH Atapi; 1226 SCSI_DEVICE_PATH Scsi; 1227 ISCSI_DEVICE_PATH Iscsi; 1228 FIBRECHANNEL_DEVICE_PATH FibreChannel; 1229 FIBRECHANNELEX_DEVICE_PATH FibreChannelEx; 1230 1231 F1394_DEVICE_PATH F1394; 1232 USB_DEVICE_PATH Usb; 1233 SATA_DEVICE_PATH Sata; 1234 USB_CLASS_DEVICE_PATH UsbClass; 1235 USB_WWID_DEVICE_PATH UsbWwid; 1236 DEVICE_LOGICAL_UNIT_DEVICE_PATH LogicUnit; 1237 I2O_DEVICE_PATH I2O; 1238 MAC_ADDR_DEVICE_PATH MacAddr; 1239 IPv4_DEVICE_PATH Ipv4; 1240 IPv6_DEVICE_PATH Ipv6; 1241 VLAN_DEVICE_PATH Vlan; 1242 INFINIBAND_DEVICE_PATH InfiniBand; 1243 UART_DEVICE_PATH Uart; 1244 UART_FLOW_CONTROL_DEVICE_PATH UartFlowControl; 1245 SAS_DEVICE_PATH Sas; 1246 SASEX_DEVICE_PATH SasEx; 1247 NVME_NAMESPACE_DEVICE_PATH NvmeNamespace; 1248 URI_DEVICE_PATH Uri; 1249 BLUETOOTH_DEVICE_PATH Bluetooth; 1250 WIFI_DEVICE_PATH WiFi; 1251 UFS_DEVICE_PATH Ufs; 1252 SD_DEVICE_PATH Sd; 1253 EMMC_DEVICE_PATH Emmc; 1254 HARDDRIVE_DEVICE_PATH HardDrive; 1255 CDROM_DEVICE_PATH CD; 1256 1257 FILEPATH_DEVICE_PATH FilePath; 1258 MEDIA_PROTOCOL_DEVICE_PATH MediaProtocol; 1259 1260 MEDIA_FW_VOL_DEVICE_PATH FirmwareVolume; 1261 MEDIA_FW_VOL_FILEPATH_DEVICE_PATH FirmwareFile; 1262 MEDIA_RELATIVE_OFFSET_RANGE_DEVICE_PATH Offset; 1263 MEDIA_RAM_DISK_DEVICE_PATH RamDisk; 1264 BBS_BBS_DEVICE_PATH Bbs; 1265 } EFI_DEV_PATH; 1266 1267 1268 1269 typedef union { 1270 EFI_DEVICE_PATH_PROTOCOL *DevPath; 1271 PCI_DEVICE_PATH *Pci; 1272 PCCARD_DEVICE_PATH *PcCard; 1273 MEMMAP_DEVICE_PATH *MemMap; 1274 VENDOR_DEVICE_PATH *Vendor; 1275 1276 CONTROLLER_DEVICE_PATH *Controller; 1277 BMC_DEVICE_PATH *Bmc; 1278 ACPI_HID_DEVICE_PATH *Acpi; 1279 ACPI_EXTENDED_HID_DEVICE_PATH *ExtendedAcpi; 1280 ACPI_ADR_DEVICE_PATH *AcpiAdr; 1281 1282 ATAPI_DEVICE_PATH *Atapi; 1283 SCSI_DEVICE_PATH *Scsi; 1284 ISCSI_DEVICE_PATH *Iscsi; 1285 FIBRECHANNEL_DEVICE_PATH *FibreChannel; 1286 FIBRECHANNELEX_DEVICE_PATH *FibreChannelEx; 1287 1288 F1394_DEVICE_PATH *F1394; 1289 USB_DEVICE_PATH *Usb; 1290 SATA_DEVICE_PATH *Sata; 1291 USB_CLASS_DEVICE_PATH *UsbClass; 1292 USB_WWID_DEVICE_PATH *UsbWwid; 1293 DEVICE_LOGICAL_UNIT_DEVICE_PATH *LogicUnit; 1294 I2O_DEVICE_PATH *I2O; 1295 MAC_ADDR_DEVICE_PATH *MacAddr; 1296 IPv4_DEVICE_PATH *Ipv4; 1297 IPv6_DEVICE_PATH *Ipv6; 1298 VLAN_DEVICE_PATH *Vlan; 1299 INFINIBAND_DEVICE_PATH *InfiniBand; 1300 UART_DEVICE_PATH *Uart; 1301 UART_FLOW_CONTROL_DEVICE_PATH *UartFlowControl; 1302 SAS_DEVICE_PATH *Sas; 1303 SASEX_DEVICE_PATH *SasEx; 1304 NVME_NAMESPACE_DEVICE_PATH *NvmeNamespace; 1305 URI_DEVICE_PATH *Uri; 1306 BLUETOOTH_DEVICE_PATH *Bluetooth; 1307 WIFI_DEVICE_PATH *WiFi; 1308 UFS_DEVICE_PATH *Ufs; 1309 SD_DEVICE_PATH *Sd; 1310 EMMC_DEVICE_PATH *Emmc; 1311 HARDDRIVE_DEVICE_PATH *HardDrive; 1312 CDROM_DEVICE_PATH *CD; 1313 1314 FILEPATH_DEVICE_PATH *FilePath; 1315 MEDIA_PROTOCOL_DEVICE_PATH *MediaProtocol; 1316 1317 MEDIA_FW_VOL_DEVICE_PATH *FirmwareVolume; 1318 MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *FirmwareFile; 1319 MEDIA_RELATIVE_OFFSET_RANGE_DEVICE_PATH *Offset; 1320 MEDIA_RAM_DISK_DEVICE_PATH *RamDisk; 1321 BBS_BBS_DEVICE_PATH *Bbs; 1322 UINT8 *Raw; 1323 } EFI_DEV_PATH_PTR; 1324 1325 #pragma pack() 1326 1327 #define END_DEVICE_PATH_TYPE 0x7f 1328 #define END_ENTIRE_DEVICE_PATH_SUBTYPE 0xFF 1329 #define END_INSTANCE_DEVICE_PATH_SUBTYPE 0x01 1330 1331 extern EFI_GUID gEfiDevicePathProtocolGuid; 1332 1333 #endif 1334