DevicePath.h

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#ifndef __EFI_DEVICE_PATH_PROTOCOL_H__
#define __EFI_DEVICE_PATH_PROTOCOL_H__
 
#include <Guid/PcAnsi.h>
#include <IndustryStandard/Bluetooth.h>
#include <IndustryStandard/Acpi60.h>
 
#define EFI_DEVICE_PATH_PROTOCOL_GUID \
  { \
    0x9576e91, 0x6d3f, 0x11d2, {0x8e, 0x39, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b } \
  }
 
#define DEVICE_PATH_PROTOCOL  EFI_DEVICE_PATH_PROTOCOL_GUID
 
#pragma pack(1)
 
typedef struct {
  UINT8    Type;    
 
  UINT8    SubType; 
 
  UINT8    Length[2]; 
} EFI_DEVICE_PATH_PROTOCOL;
 
typedef EFI_DEVICE_PATH_PROTOCOL EFI_DEVICE_PATH;
 
#define HARDWARE_DEVICE_PATH  0x01
 
#define HW_PCI_DP  0x01
 
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT8                       Function;
  UINT8                       Device;
} PCI_DEVICE_PATH;
 
#define HW_PCCARD_DP  0x02
 
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT8                       FunctionNumber;
} PCCARD_DEVICE_PATH;
 
#define HW_MEMMAP_DP  0x03
 
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT32                      MemoryType;
  EFI_PHYSICAL_ADDRESS        StartingAddress;
  EFI_PHYSICAL_ADDRESS        EndingAddress;
} MEMMAP_DEVICE_PATH;
 
#define HW_VENDOR_DP  0x04
 
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  EFI_GUID                    Guid;
} VENDOR_DEVICE_PATH;
 
#define HW_CONTROLLER_DP  0x05
 
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT32                      ControllerNumber;
} CONTROLLER_DEVICE_PATH;
 
#define HW_BMC_DP  0x06
 
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT8                       InterfaceType;
  UINT8                       BaseAddress[8];
} BMC_DEVICE_PATH;
 
#define ACPI_DEVICE_PATH  0x02
 
#define ACPI_DP  0x01
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT32                      HID;
  UINT32                      UID;
} ACPI_HID_DEVICE_PATH;
 
#define ACPI_EXTENDED_DP  0x02
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT32                      HID;
  UINT32                      UID;
  UINT32                      CID;
} ACPI_EXTENDED_HID_DEVICE_PATH;
 
//
//  EISA ID Macro
//  EISA ID Definition 32-bits
//   bits[15:0] - three character compressed ASCII EISA ID.
//   bits[31:16] - binary number
//    Compressed ASCII is 5 bits per character 0b00001 = 'A' 0b11010 = 'Z'
//
#define PNP_EISA_ID_CONST  0x41d0
#define EISA_ID(_Name, _Num)  ((UINT32)((_Name) | (_Num) << 16))
#define EISA_PNP_ID(_PNPId)   (EISA_ID(PNP_EISA_ID_CONST, (_PNPId)))
#define EFI_PNP_ID(_PNPId)    (EISA_ID(PNP_EISA_ID_CONST, (_PNPId)))
 
#define PNP_EISA_ID_MASK  0xffff
#define EISA_ID_TO_NUM(_Id)  ((_Id) >> 16)
 
#define ACPI_ADR_DP  0x03
 
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT32                      ADR;
  //
  // This device path may optionally contain more than one _ADR entry.
  //
} ACPI_ADR_DEVICE_PATH;
 
#define ACPI_NVDIMM_DP  0x04
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT32                      NFITDeviceHandle;
} ACPI_NVDIMM_DEVICE_PATH;
 
#define ACPI_ADR_DISPLAY_TYPE_OTHER             0
#define ACPI_ADR_DISPLAY_TYPE_VGA               1
#define ACPI_ADR_DISPLAY_TYPE_TV                2
#define ACPI_ADR_DISPLAY_TYPE_EXTERNAL_DIGITAL  3
#define ACPI_ADR_DISPLAY_TYPE_INTERNAL_DIGITAL  4
 
#define ACPI_DISPLAY_ADR(_DeviceIdScheme, _HeadId, _NonVgaOutput, _BiosCanDetect, _VendorInfo, _Type, _Port, _Index) \
          ((UINT32)(  ((UINT32)((_DeviceIdScheme) & 0x1) << 31) |  \
                      (((_HeadId)                 & 0x7) << 18) |  \
                      (((_NonVgaOutput)           & 0x1) << 17) |  \
                      (((_BiosCanDetect)          & 0x1) << 16) |  \
                      (((_VendorInfo)             & 0xf) << 12) |  \
                      (((_Type)                   & 0xf) << 8)  |  \
                      (((_Port)                   & 0xf) << 4)  |  \
                       ((_Index)                  & 0xf) ))
 
#define MESSAGING_DEVICE_PATH  0x03
 
#define MSG_ATAPI_DP  0x01
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT8                       PrimarySecondary;
  UINT8                       SlaveMaster;
  UINT16                      Lun;
} ATAPI_DEVICE_PATH;
 
#define MSG_SCSI_DP  0x02
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT16                      Pun;
  UINT16                      Lun;
} SCSI_DEVICE_PATH;
 
#define MSG_FIBRECHANNEL_DP  0x03
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT32                      Reserved;
  UINT64                      WWN;
  UINT64                      Lun;
} FIBRECHANNEL_DEVICE_PATH;
 
#define MSG_FIBRECHANNELEX_DP  0x15
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT32                      Reserved;
  UINT8                       WWN[8];
  UINT8                       Lun[8];
} FIBRECHANNELEX_DEVICE_PATH;
 
#define MSG_1394_DP  0x04
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT32                      Reserved;
  UINT64                      Guid;
} F1394_DEVICE_PATH;
 
#define MSG_USB_DP  0x05
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT8                       ParentPortNumber;
  UINT8                       InterfaceNumber;
} USB_DEVICE_PATH;
 
#define MSG_USB_CLASS_DP  0x0f
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT16                      VendorId;
  UINT16                      ProductId;
  UINT8                       DeviceClass;
  UINT8                       DeviceSubClass;
  UINT8                       DeviceProtocol;
} USB_CLASS_DEVICE_PATH;
 
#define MSG_USB_WWID_DP  0x10
 
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT16                      InterfaceNumber;
  UINT16                      VendorId;
  UINT16                      ProductId;
} USB_WWID_DEVICE_PATH;
 
#define MSG_DEVICE_LOGICAL_UNIT_DP  0x11
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT8                       Lun;
} DEVICE_LOGICAL_UNIT_DEVICE_PATH;
 
#define MSG_SATA_DP  0x12
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT16                      HBAPortNumber;
  UINT16                      PortMultiplierPortNumber;
  UINT16                      Lun;
} SATA_DEVICE_PATH;
 
#define SATA_HBA_DIRECT_CONNECT_FLAG  0x8000
 
#define MSG_I2O_DP  0x06
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT32                      Tid;
} I2O_DEVICE_PATH;
 
#define MSG_MAC_ADDR_DP  0x0b
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  EFI_MAC_ADDRESS             MacAddress;
  UINT8                       IfType;
} MAC_ADDR_DEVICE_PATH;
 
#define MSG_IPv4_DP  0x0c
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  EFI_IPv4_ADDRESS            LocalIpAddress;
  EFI_IPv4_ADDRESS            RemoteIpAddress;
  UINT16                      LocalPort;
  UINT16                      RemotePort;
  UINT16                      Protocol;
  BOOLEAN                     StaticIpAddress;
  EFI_IPv4_ADDRESS            GatewayIpAddress;
  EFI_IPv4_ADDRESS            SubnetMask;
} IPv4_DEVICE_PATH;
 
#define MSG_IPv6_DP  0x0d
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  EFI_IPv6_ADDRESS            LocalIpAddress;
  EFI_IPv6_ADDRESS            RemoteIpAddress;
  UINT16                      LocalPort;
  UINT16                      RemotePort;
  UINT16                      Protocol;
  UINT8                       IpAddressOrigin;
  UINT8                       PrefixLength;
  EFI_IPv6_ADDRESS            GatewayIpAddress;
} IPv6_DEVICE_PATH;
 
#define MSG_INFINIBAND_DP  0x09
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT32    ResourceFlags;
  UINT8     PortGid[16];
  UINT64    ServiceId;
  UINT64    TargetPortId;
  UINT64    DeviceId;
} INFINIBAND_DEVICE_PATH;
 
#define INFINIBAND_RESOURCE_FLAG_IOC_SERVICE                0x01
#define INFINIBAND_RESOURCE_FLAG_EXTENDED_BOOT_ENVIRONMENT  0x02
#define INFINIBAND_RESOURCE_FLAG_CONSOLE_PROTOCOL           0x04
#define INFINIBAND_RESOURCE_FLAG_STORAGE_PROTOCOL           0x08
#define INFINIBAND_RESOURCE_FLAG_NETWORK_PROTOCOL           0x10
 
#define MSG_UART_DP  0x0e
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT32                      Reserved;
  UINT64                      BaudRate;
  UINT8                       DataBits;
  UINT8    Parity;
  UINT8    StopBits;
} UART_DEVICE_PATH;
 
#define NVDIMM_NAMESPACE_DP  0x20
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  EFI_GUID                    Uuid;
} NVDIMM_NAMESPACE_DEVICE_PATH;
 
//
// Use VENDOR_DEVICE_PATH struct
//
#define MSG_VENDOR_DP  0x0a
typedef VENDOR_DEVICE_PATH VENDOR_DEFINED_DEVICE_PATH;
 
#define DEVICE_PATH_MESSAGING_PC_ANSI      EFI_PC_ANSI_GUID
#define DEVICE_PATH_MESSAGING_VT_100       EFI_VT_100_GUID
#define DEVICE_PATH_MESSAGING_VT_100_PLUS  EFI_VT_100_PLUS_GUID
#define DEVICE_PATH_MESSAGING_VT_UTF8      EFI_VT_UTF8_GUID
 
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  EFI_GUID                    Guid;
  UINT32                      FlowControlMap;
} UART_FLOW_CONTROL_DEVICE_PATH;
 
#define UART_FLOW_CONTROL_HARDWARE  0x00000001
#define UART_FLOW_CONTROL_XON_XOFF  0x00000010
 
#define DEVICE_PATH_MESSAGING_SAS  EFI_SAS_DEVICE_PATH_GUID
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  EFI_GUID                    Guid;
  UINT32                      Reserved;
  UINT64                      SasAddress;
  UINT64                      Lun;
  UINT16                      DeviceTopology;
  UINT16                      RelativeTargetPort;
} SAS_DEVICE_PATH;
 
#define MSG_SASEX_DP  0x16
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT8                       SasAddress[8];
  UINT8                       Lun[8];
  UINT16                      DeviceTopology;
  UINT16                      RelativeTargetPort;
} SASEX_DEVICE_PATH;
 
#define MSG_NVME_NAMESPACE_DP  0x17
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT32                      NamespaceId;
  UINT64                      NamespaceUuid;
} NVME_NAMESPACE_DEVICE_PATH;
 
#define MSG_NVME_OF_NAMESPACE_DP  0x22
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT8                       NamespaceIdType;
  UINT8                       NamespaceId[16];
  CHAR8                       SubsystemNqn[];
} NVME_OF_NAMESPACE_DEVICE_PATH;
 
#define MSG_DNS_DP  0x1F
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT8                       IsIPv6;
  EFI_IP_ADDRESS              DnsServerIp[];
} DNS_DEVICE_PATH;
 
#define MSG_URI_DP  0x18
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  CHAR8                       Uri[];
} URI_DEVICE_PATH;
 
#define MSG_UFS_DP  0x19
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT8                       Pun;
  UINT8                       Lun;
} UFS_DEVICE_PATH;
 
#define MSG_SD_DP  0x1A
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT8                       SlotNumber;
} SD_DEVICE_PATH;
 
#define MSG_EMMC_DP  0x1D
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT8                       SlotNumber;
} EMMC_DEVICE_PATH;
 
#define MSG_ISCSI_DP  0x13
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT16                      NetworkProtocol;
  UINT16                      LoginOption;
  UINT64                      Lun;
  UINT16                      TargetPortalGroupTag;
} ISCSI_DEVICE_PATH;
 
#define ISCSI_LOGIN_OPTION_NO_HEADER_DIGEST            0x0000
#define ISCSI_LOGIN_OPTION_HEADER_DIGEST_USING_CRC32C  0x0002
#define ISCSI_LOGIN_OPTION_NO_DATA_DIGEST              0x0000
#define ISCSI_LOGIN_OPTION_DATA_DIGEST_USING_CRC32C    0x0008
#define ISCSI_LOGIN_OPTION_AUTHMETHOD_CHAP             0x0000
#define ISCSI_LOGIN_OPTION_AUTHMETHOD_NON              0x1000
#define ISCSI_LOGIN_OPTION_CHAP_BI                     0x0000
#define ISCSI_LOGIN_OPTION_CHAP_UNI                    0x2000
 
#define MSG_VLAN_DP  0x14
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT16                      VlanId;
} VLAN_DEVICE_PATH;
 
#define MSG_BLUETOOTH_DP  0x1b
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  BLUETOOTH_ADDRESS           BD_ADDR;
} BLUETOOTH_DEVICE_PATH;
 
#define MSG_WIFI_DP  0x1C
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT8                       SSId[32];
} WIFI_DEVICE_PATH;
 
#define MSG_BLUETOOTH_LE_DP  0x1E
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  BLUETOOTH_LE_ADDRESS        Address;
} BLUETOOTH_LE_DEVICE_PATH;
 
//
// Media Device Path
//
#define MEDIA_DEVICE_PATH  0x04
 
#define MEDIA_HARDDRIVE_DP  0x01
 
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT32                      PartitionNumber;
  UINT64                      PartitionStart;
  UINT64                      PartitionSize;
  UINT8                       Signature[16];
  UINT8                       MBRType;
  UINT8                       SignatureType;
} HARDDRIVE_DEVICE_PATH;
 
#define MBR_TYPE_PCAT                        0x01
#define MBR_TYPE_EFI_PARTITION_TABLE_HEADER  0x02
 
#define NO_DISK_SIGNATURE    0x00
#define SIGNATURE_TYPE_MBR   0x01
#define SIGNATURE_TYPE_GUID  0x02
 
#define MEDIA_CDROM_DP  0x02
 
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT32                      BootEntry;
  UINT64                      PartitionStart;
  UINT64                      PartitionSize;
} CDROM_DEVICE_PATH;
 
//
// Use VENDOR_DEVICE_PATH struct
//
#define MEDIA_VENDOR_DP  0x03           
 
#define MEDIA_FILEPATH_DP  0x04
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  CHAR16                      PathName[1];
} FILEPATH_DEVICE_PATH;
 
#define SIZE_OF_FILEPATH_DEVICE_PATH  OFFSET_OF(FILEPATH_DEVICE_PATH,PathName)
 
#define MEDIA_PROTOCOL_DP  0x05
 
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  EFI_GUID                    Protocol;
} MEDIA_PROTOCOL_DEVICE_PATH;
 
#define MEDIA_PIWG_FW_FILE_DP  0x06
 
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  EFI_GUID                    FvFileName;
} MEDIA_FW_VOL_FILEPATH_DEVICE_PATH;
 
#define MEDIA_PIWG_FW_VOL_DP  0x07
 
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  EFI_GUID                    FvName;
} MEDIA_FW_VOL_DEVICE_PATH;
 
#define MEDIA_RELATIVE_OFFSET_RANGE_DP  0x08
 
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT32                      Reserved;
  UINT64                      StartingOffset;
  UINT64                      EndingOffset;
} MEDIA_RELATIVE_OFFSET_RANGE_DEVICE_PATH;
 
#define EFI_VIRTUAL_DISK_GUID  EFI_ACPI_6_0_NFIT_GUID_RAM_DISK_SUPPORTING_VIRTUAL_DISK_REGION_VOLATILE
 
extern  EFI_GUID  gEfiVirtualDiskGuid;
 
#define EFI_VIRTUAL_CD_GUID  EFI_ACPI_6_0_NFIT_GUID_RAM_DISK_SUPPORTING_VIRTUAL_CD_REGION_VOLATILE
 
extern  EFI_GUID  gEfiVirtualCdGuid;
 
#define EFI_PERSISTENT_VIRTUAL_DISK_GUID  EFI_ACPI_6_0_NFIT_GUID_RAM_DISK_SUPPORTING_VIRTUAL_DISK_REGION_PERSISTENT
 
extern  EFI_GUID  gEfiPersistentVirtualDiskGuid;
 
#define EFI_PERSISTENT_VIRTUAL_CD_GUID  EFI_ACPI_6_0_NFIT_GUID_RAM_DISK_SUPPORTING_VIRTUAL_CD_REGION_PERSISTENT
 
extern  EFI_GUID  gEfiPersistentVirtualCdGuid;
 
#define MEDIA_RAM_DISK_DP  0x09
 
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT32                      StartingAddr[2];
  UINT32                      EndingAddr[2];
  EFI_GUID                    TypeGuid;
  UINT16                      Instance;
} MEDIA_RAM_DISK_DEVICE_PATH;
 
#define BBS_DEVICE_PATH  0x05
 
#define BBS_BBS_DP  0x01
 
typedef struct {
  EFI_DEVICE_PATH_PROTOCOL    Header;
  UINT16                      DeviceType;
  UINT16                      StatusFlag;
  CHAR8                       String[1];
} BBS_BBS_DEVICE_PATH;
 
//
// DeviceType definitions - from BBS specification
//
#define BBS_TYPE_FLOPPY            0x01
#define BBS_TYPE_HARDDRIVE         0x02
#define BBS_TYPE_CDROM             0x03
#define BBS_TYPE_PCMCIA            0x04
#define BBS_TYPE_USB               0x05
#define BBS_TYPE_EMBEDDED_NETWORK  0x06
#define BBS_TYPE_BEV               0x80
#define BBS_TYPE_UNKNOWN           0xFF
 
typedef union {
  EFI_DEVICE_PATH_PROTOCOL                   DevPath;
  PCI_DEVICE_PATH                            Pci;
  PCCARD_DEVICE_PATH                         PcCard;
  MEMMAP_DEVICE_PATH                         MemMap;
  VENDOR_DEVICE_PATH                         Vendor;
 
  CONTROLLER_DEVICE_PATH                     Controller;
  BMC_DEVICE_PATH                            Bmc;
  ACPI_HID_DEVICE_PATH                       Acpi;
  ACPI_EXTENDED_HID_DEVICE_PATH              ExtendedAcpi;
  ACPI_ADR_DEVICE_PATH                       AcpiAdr;
 
  ATAPI_DEVICE_PATH                          Atapi;
  SCSI_DEVICE_PATH                           Scsi;
  ISCSI_DEVICE_PATH                          Iscsi;
  FIBRECHANNEL_DEVICE_PATH                   FibreChannel;
  FIBRECHANNELEX_DEVICE_PATH                 FibreChannelEx;
 
  F1394_DEVICE_PATH                          F1394;
  USB_DEVICE_PATH                            Usb;
  SATA_DEVICE_PATH                           Sata;
  USB_CLASS_DEVICE_PATH                      UsbClass;
  USB_WWID_DEVICE_PATH                       UsbWwid;
  DEVICE_LOGICAL_UNIT_DEVICE_PATH            LogicUnit;
  I2O_DEVICE_PATH                            I2O;
  MAC_ADDR_DEVICE_PATH                       MacAddr;
  IPv4_DEVICE_PATH                           Ipv4;
  IPv6_DEVICE_PATH                           Ipv6;
  VLAN_DEVICE_PATH                           Vlan;
  INFINIBAND_DEVICE_PATH                     InfiniBand;
  UART_DEVICE_PATH                           Uart;
  UART_FLOW_CONTROL_DEVICE_PATH              UartFlowControl;
  SAS_DEVICE_PATH                            Sas;
  SASEX_DEVICE_PATH                          SasEx;
  NVME_NAMESPACE_DEVICE_PATH                 NvmeNamespace;
  NVME_OF_NAMESPACE_DEVICE_PATH              NvmeOfNamespace;
  DNS_DEVICE_PATH                            Dns;
  URI_DEVICE_PATH                            Uri;
  BLUETOOTH_DEVICE_PATH                      Bluetooth;
  WIFI_DEVICE_PATH                           WiFi;
  UFS_DEVICE_PATH                            Ufs;
  SD_DEVICE_PATH                             Sd;
  EMMC_DEVICE_PATH                           Emmc;
  HARDDRIVE_DEVICE_PATH                      HardDrive;
  CDROM_DEVICE_PATH                          CD;
 
  FILEPATH_DEVICE_PATH                       FilePath;
  MEDIA_PROTOCOL_DEVICE_PATH                 MediaProtocol;
 
  MEDIA_FW_VOL_DEVICE_PATH                   FirmwareVolume;
  MEDIA_FW_VOL_FILEPATH_DEVICE_PATH          FirmwareFile;
  MEDIA_RELATIVE_OFFSET_RANGE_DEVICE_PATH    Offset;
  MEDIA_RAM_DISK_DEVICE_PATH                 RamDisk;
  BBS_BBS_DEVICE_PATH                        Bbs;
} EFI_DEV_PATH;
 
typedef union {
  EFI_DEVICE_PATH_PROTOCOL                   *DevPath;
  PCI_DEVICE_PATH                            *Pci;
  PCCARD_DEVICE_PATH                         *PcCard;
  MEMMAP_DEVICE_PATH                         *MemMap;
  VENDOR_DEVICE_PATH                         *Vendor;
 
  CONTROLLER_DEVICE_PATH                     *Controller;
  BMC_DEVICE_PATH                            *Bmc;
  ACPI_HID_DEVICE_PATH                       *Acpi;
  ACPI_EXTENDED_HID_DEVICE_PATH              *ExtendedAcpi;
  ACPI_ADR_DEVICE_PATH                       *AcpiAdr;
 
  ATAPI_DEVICE_PATH                          *Atapi;
  SCSI_DEVICE_PATH                           *Scsi;
  ISCSI_DEVICE_PATH                          *Iscsi;
  FIBRECHANNEL_DEVICE_PATH                   *FibreChannel;
  FIBRECHANNELEX_DEVICE_PATH                 *FibreChannelEx;
 
  F1394_DEVICE_PATH                          *F1394;
  USB_DEVICE_PATH                            *Usb;
  SATA_DEVICE_PATH                           *Sata;
  USB_CLASS_DEVICE_PATH                      *UsbClass;
  USB_WWID_DEVICE_PATH                       *UsbWwid;
  DEVICE_LOGICAL_UNIT_DEVICE_PATH            *LogicUnit;
  I2O_DEVICE_PATH                            *I2O;
  MAC_ADDR_DEVICE_PATH                       *MacAddr;
  IPv4_DEVICE_PATH                           *Ipv4;
  IPv6_DEVICE_PATH                           *Ipv6;
  VLAN_DEVICE_PATH                           *Vlan;
  INFINIBAND_DEVICE_PATH                     *InfiniBand;
  UART_DEVICE_PATH                           *Uart;
  UART_FLOW_CONTROL_DEVICE_PATH              *UartFlowControl;
  SAS_DEVICE_PATH                            *Sas;
  SASEX_DEVICE_PATH                          *SasEx;
  NVME_NAMESPACE_DEVICE_PATH                 *NvmeNamespace;
  NVME_OF_NAMESPACE_DEVICE_PATH              *NvmeOfNamespace;
  DNS_DEVICE_PATH                            *Dns;
  URI_DEVICE_PATH                            *Uri;
  BLUETOOTH_DEVICE_PATH                      *Bluetooth;
  WIFI_DEVICE_PATH                           *WiFi;
  UFS_DEVICE_PATH                            *Ufs;
  SD_DEVICE_PATH                             *Sd;
  EMMC_DEVICE_PATH                           *Emmc;
  HARDDRIVE_DEVICE_PATH                      *HardDrive;
  CDROM_DEVICE_PATH                          *CD;
 
  FILEPATH_DEVICE_PATH                       *FilePath;
  MEDIA_PROTOCOL_DEVICE_PATH                 *MediaProtocol;
 
  MEDIA_FW_VOL_DEVICE_PATH                   *FirmwareVolume;
  MEDIA_FW_VOL_FILEPATH_DEVICE_PATH          *FirmwareFile;
  MEDIA_RELATIVE_OFFSET_RANGE_DEVICE_PATH    *Offset;
  MEDIA_RAM_DISK_DEVICE_PATH                 *RamDisk;
  BBS_BBS_DEVICE_PATH                        *Bbs;
  UINT8                                      *Raw;
} EFI_DEV_PATH_PTR;
 
#pragma pack()
 
#define END_DEVICE_PATH_TYPE              0x7f
#define END_ENTIRE_DEVICE_PATH_SUBTYPE    0xFF
#define END_INSTANCE_DEVICE_PATH_SUBTYPE  0x01
 
extern EFI_GUID  gEfiDevicePathProtocolGuid;
 
#endif