/** @file
  DevicePathFromText protocol as defined in the UEFI 2.0 specification.

Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#include "UefiDevicePathLib.h"

/**

  Duplicates a string.

  @param  Src  Source string.

  @return The duplicated string.

**/
CHAR16 *
UefiDevicePathLibStrDuplicate (
  IN CONST CHAR16  *Src
  )
{
  return AllocateCopyPool(StrSize (Src), Src);
}

/**

  Get parameter in a pair of parentheses follow the given node name.
  For example, given the "Pci(0,1)" and NodeName "Pci", it returns "0,1".

  @param  Str      Device Path Text.
  @param  NodeName Name of the node.

  @return Parameter text for the node.

**/
CHAR16 *
GetParamByNodeName (
  IN CHAR16 *Str,
  IN CHAR16 *NodeName
  )
{
  CHAR16  *ParamStr;
  CHAR16  *StrPointer;
  UINTN   NodeNameLength;
  UINTN   ParameterLength;

  //
  // Check whether the node name matchs
  //
  NodeNameLength = StrLen (NodeName);
  if (StrnCmp (Str, NodeName, NodeNameLength) != 0) {
    return NULL;
  }

  ParamStr = Str + NodeNameLength;
  if (!IS_LEFT_PARENTH (*ParamStr)) {
    return NULL;
  }

  //
  // Skip the found '(' and find first occurrence of ')'
  //
  ParamStr++;
  ParameterLength = 0;
  StrPointer = ParamStr;
  while (!IS_NULL (*StrPointer)) {
    if (IS_RIGHT_PARENTH (*StrPointer)) {
      break;
    }
    StrPointer++;
    ParameterLength++;
  }
  if (IS_NULL (*StrPointer)) {
    //
    // ')' not found
    //
    return NULL;
  }

  ParamStr = AllocateCopyPool((ParameterLength + 1) * sizeof (CHAR16), ParamStr);
  if (ParamStr == NULL) {
    return NULL;
  }
  //
  // Terminate the parameter string
  //
  ParamStr[ParameterLength] = L'\0';

  return ParamStr;
}

/**
  Gets current sub-string from a string list, before return
  the list header is moved to next sub-string. The sub-string is separated
  by the specified character. For example, the separator is ',', the string
  list is "2,0,3", it returns "2", the remain list move to "0,3"

  @param  List        A string list separated by the specified separator
  @param  Separator   The separator character

  @return A pointer to the current sub-string

**/
CHAR16 *
SplitStr (
  IN OUT CHAR16 **List,
  IN     CHAR16 Separator
  )
{
  CHAR16  *Str;
  CHAR16  *ReturnStr;

  Str = *List;
  ReturnStr = Str;

  if (IS_NULL (*Str)) {
    return ReturnStr;
  }

  //
  // Find first occurrence of the separator
  //
  while (!IS_NULL (*Str)) {
    if (*Str == Separator) {
      break;
    }
    Str++;
  }

  if (*Str == Separator) {
    //
    // Find a sub-string, terminate it
    //
    *Str = L'\0';
    Str++;
  }

  //
  // Move to next sub-string
  //
  *List = Str;

  return ReturnStr;
}

/**
  Gets the next parameter string from the list.

  @param List            A string list separated by the specified separator

  @return A pointer to the current sub-string

**/
CHAR16 *
GetNextParamStr (
  IN OUT CHAR16 **List
  )
{
  //
  // The separator is comma
  //
  return SplitStr (List, L',');
}

/**
  Get one device node from entire device path text.

  @param DevicePath      On input, the current Device Path node; on output, the next device path node
  @param IsInstanceEnd   This node is the end of a device path instance

  @return A device node text or NULL if no more device node available

**/
CHAR16 *
GetNextDeviceNodeStr (
  IN OUT CHAR16   **DevicePath,
  OUT    BOOLEAN  *IsInstanceEnd
  )
{
  CHAR16  *Str;
  CHAR16  *ReturnStr;
  UINTN   ParenthesesStack;

  Str = *DevicePath;
  if (IS_NULL (*Str)) {
    return NULL;
  }

  //
  // Skip the leading '/', '(', ')' and ','
  //
  while (!IS_NULL (*Str)) {
    if (!IS_SLASH (*Str) &&
        !IS_COMMA (*Str) &&
        !IS_LEFT_PARENTH (*Str) &&
        !IS_RIGHT_PARENTH (*Str)) {
      break;
    }
    Str++;
  }

  ReturnStr = Str;

  //
  // Scan for the separator of this device node, '/' or ','
  //
  ParenthesesStack = 0;
  while (!IS_NULL (*Str)) {
    if ((IS_COMMA (*Str) || IS_SLASH (*Str)) && (ParenthesesStack == 0)) {
      break;
    }

    if (IS_LEFT_PARENTH (*Str)) {
      ParenthesesStack++;
    } else if (IS_RIGHT_PARENTH (*Str)) {
      ParenthesesStack--;
    }

    Str++;
  }

  if (ParenthesesStack != 0) {
    //
    // The '(' doesn't pair with ')', invalid device path text
    //
    return NULL;
  }

  if (IS_COMMA (*Str)) {
    *IsInstanceEnd = TRUE;
    *Str = L'\0';
    Str++;
  } else {
    *IsInstanceEnd = FALSE;
    if (!IS_NULL (*Str)) {
      *Str = L'\0';
      Str++;
    }
  }

  *DevicePath = Str;

  return ReturnStr;
}


/**
  Return whether the integer string is a hex string.

  @param Str             The integer string

  @retval TRUE   Hex string
  @retval FALSE  Decimal string

**/
BOOLEAN
IsHexStr (
  IN CHAR16   *Str
  )
{
  //
  // skip preceeding white space
  //
  while ((*Str != 0) && *Str == L' ') {
    Str ++;
  }
  //
  // skip preceeding zeros
  //
  while ((*Str != 0) && *Str == L'0') {
    Str ++;
  }

  return (BOOLEAN) (*Str == L'x' || *Str == L'X');
}

/**

  Convert integer string to uint.

  @param Str             The integer string. If leading with "0x" or "0X", it's hexadecimal.

  @return A UINTN value represented by Str

**/
UINTN
Strtoi (
  IN CHAR16  *Str
  )
{
  if (IsHexStr (Str)) {
    return StrHexToUintn (Str);
  } else {
    return StrDecimalToUintn (Str);
  }
}

/**

  Convert integer string to 64 bit data.

  @param Str             The integer string. If leading with "0x" or "0X", it's hexadecimal.
  @param Data            A pointer to the UINT64 value represented by Str

**/
VOID
Strtoi64 (
  IN  CHAR16  *Str,
  OUT UINT64  *Data
  )
{
  if (IsHexStr (Str)) {
    *Data = StrHexToUint64 (Str);
  } else {
    *Data = StrDecimalToUint64 (Str);
  }
}

/**
  Converts a Unicode string to ASCII string.

  @param Str             The equivalent Unicode string
  @param AsciiStr        On input, it points to destination ASCII string buffer; on output, it points
                         to the next ASCII string next to it

**/
VOID
StrToAscii (
  IN     CHAR16 *Str,
  IN OUT CHAR8  **AsciiStr
  )
{
  CHAR8 *Dest;

  Dest = *AsciiStr;
  while (!IS_NULL (*Str)) {
    *(Dest++) = (CHAR8) *(Str++);
  }
  *Dest = 0;

  //
  // Return the string next to it
  //
  *AsciiStr = Dest + 1;
}

/**
  Converts a generic text device path node to device path structure.

  @param Type            The type of the device path node.
  @param TextDeviceNode  The input text device path node.

  @return A pointer to device path structure.
**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextGenericPath (
  IN UINT8  Type,
  IN CHAR16 *TextDeviceNode
  )
{
  EFI_DEVICE_PATH_PROTOCOL *Node;
  CHAR16                   *SubtypeStr;
  CHAR16                   *DataStr;
  UINTN                    DataLength;

  SubtypeStr = GetNextParamStr (&TextDeviceNode);
  DataStr    = GetNextParamStr (&TextDeviceNode);

  if (DataStr == NULL) {
    DataLength = 0;
  } else {
    DataLength = StrLen (DataStr) / 2;
  }
  Node = CreateDeviceNode (
           Type,
           (UINT8) Strtoi (SubtypeStr),
           (UINT16) (sizeof (EFI_DEVICE_PATH_PROTOCOL) + DataLength)
           );

  StrHexToBytes (DataStr, DataLength * 2, (UINT8 *) (Node + 1), DataLength);
  return Node;
}

/**
  Converts a generic text device path node to device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextPath (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                   *TypeStr;

  TypeStr    = GetNextParamStr (&TextDeviceNode);

  return DevPathFromTextGenericPath ((UINT8) Strtoi (TypeStr), TextDeviceNode);
}

/**
  Converts a generic hardware text device path node to Hardware device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to Hardware device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextHardwarePath (
  IN CHAR16 *TextDeviceNode
  )
{
  return DevPathFromTextGenericPath (HARDWARE_DEVICE_PATH, TextDeviceNode);
}

/**
  Converts a text device path node to Hardware PCI device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to Hardware PCI device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextPci (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16          *FunctionStr;
  CHAR16          *DeviceStr;
  PCI_DEVICE_PATH *Pci;

  DeviceStr   = GetNextParamStr (&TextDeviceNode);
  FunctionStr = GetNextParamStr (&TextDeviceNode);
  Pci         = (PCI_DEVICE_PATH *) CreateDeviceNode (
                                      HARDWARE_DEVICE_PATH,
                                      HW_PCI_DP,
                                      (UINT16) sizeof (PCI_DEVICE_PATH)
                                      );

  Pci->Function = (UINT8) Strtoi (FunctionStr);
  Pci->Device   = (UINT8) Strtoi (DeviceStr);

  return (EFI_DEVICE_PATH_PROTOCOL *) Pci;
}

/**
  Converts a text device path node to Hardware PC card device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to Hardware PC card device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextPcCard (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16              *FunctionNumberStr;
  PCCARD_DEVICE_PATH  *Pccard;

  FunctionNumberStr = GetNextParamStr (&TextDeviceNode);
  Pccard            = (PCCARD_DEVICE_PATH *) CreateDeviceNode (
                                               HARDWARE_DEVICE_PATH,
                                               HW_PCCARD_DP,
                                               (UINT16) sizeof (PCCARD_DEVICE_PATH)
                                               );

  Pccard->FunctionNumber  = (UINT8) Strtoi (FunctionNumberStr);

  return (EFI_DEVICE_PATH_PROTOCOL *) Pccard;
}

/**
  Converts a text device path node to Hardware memory map device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to Hardware memory map device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextMemoryMapped (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16              *MemoryTypeStr;
  CHAR16              *StartingAddressStr;
  CHAR16              *EndingAddressStr;
  MEMMAP_DEVICE_PATH  *MemMap;

  MemoryTypeStr      = GetNextParamStr (&TextDeviceNode);
  StartingAddressStr = GetNextParamStr (&TextDeviceNode);
  EndingAddressStr   = GetNextParamStr (&TextDeviceNode);
  MemMap             = (MEMMAP_DEVICE_PATH *) CreateDeviceNode (
                                               HARDWARE_DEVICE_PATH,
                                               HW_MEMMAP_DP,
                                               (UINT16) sizeof (MEMMAP_DEVICE_PATH)
                                               );

  MemMap->MemoryType = (UINT32) Strtoi (MemoryTypeStr);
  Strtoi64 (StartingAddressStr, &MemMap->StartingAddress);
  Strtoi64 (EndingAddressStr, &MemMap->EndingAddress);

  return (EFI_DEVICE_PATH_PROTOCOL *) MemMap;
}

/**
  Converts a text device path node to Vendor device path structure based on the input Type
  and SubType.

  @param TextDeviceNode  The input Text device path node.
  @param Type            The type of device path node.
  @param SubType         The subtype of device path node.

  @return A pointer to the newly-created Vendor device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
ConvertFromTextVendor (
  IN CHAR16 *TextDeviceNode,
  IN UINT8  Type,
  IN UINT8  SubType
  )
{
  CHAR16              *GuidStr;
  CHAR16              *DataStr;
  UINTN               Length;
  VENDOR_DEVICE_PATH  *Vendor;

  GuidStr = GetNextParamStr (&TextDeviceNode);

  DataStr = GetNextParamStr (&TextDeviceNode);
  Length  = StrLen (DataStr);
  //
  // Two hex characters make up 1 buffer byte
  //
  Length  = (Length + 1) / 2;

  Vendor  = (VENDOR_DEVICE_PATH *) CreateDeviceNode (
                                     Type,
                                     SubType,
                                     (UINT16) (sizeof (VENDOR_DEVICE_PATH) + Length)
                                     );

  StrToGuid (GuidStr, &Vendor->Guid);
  StrHexToBytes (DataStr, Length * 2, (UINT8 *) (Vendor + 1), Length);

  return (EFI_DEVICE_PATH_PROTOCOL *) Vendor;
}

/**
  Converts a text device path node to Vendor Hardware device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Vendor Hardware device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextVenHw (
  IN CHAR16 *TextDeviceNode
  )
{
  return ConvertFromTextVendor (
           TextDeviceNode,
           HARDWARE_DEVICE_PATH,
           HW_VENDOR_DP
           );
}

/**
  Converts a text device path node to Hardware Controller device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Hardware Controller device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextCtrl (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                  *ControllerStr;
  CONTROLLER_DEVICE_PATH  *Controller;

  ControllerStr = GetNextParamStr (&TextDeviceNode);
  Controller    = (CONTROLLER_DEVICE_PATH *) CreateDeviceNode (
                                               HARDWARE_DEVICE_PATH,
                                               HW_CONTROLLER_DP,
                                               (UINT16) sizeof (CONTROLLER_DEVICE_PATH)
                                               );
  Controller->ControllerNumber = (UINT32) Strtoi (ControllerStr);

  return (EFI_DEVICE_PATH_PROTOCOL *) Controller;
}

/**
  Converts a text device path node to BMC device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created BMC device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextBmc (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                *InterfaceTypeStr;
  CHAR16                *BaseAddressStr;
  BMC_DEVICE_PATH       *BmcDp;

  InterfaceTypeStr = GetNextParamStr (&TextDeviceNode);
  BaseAddressStr   = GetNextParamStr (&TextDeviceNode);
  BmcDp            = (BMC_DEVICE_PATH *) CreateDeviceNode (
                                           HARDWARE_DEVICE_PATH,
                                           HW_BMC_DP,
                                           (UINT16) sizeof (BMC_DEVICE_PATH)
                                           );

  BmcDp->InterfaceType = (UINT8) Strtoi (InterfaceTypeStr);
  WriteUnaligned64 (
    (UINT64 *) (&BmcDp->BaseAddress),
    StrHexToUint64 (BaseAddressStr)
    );

  return (EFI_DEVICE_PATH_PROTOCOL *) BmcDp;
}

/**
  Converts a generic ACPI text device path node to ACPI device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to ACPI device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextAcpiPath (
  IN CHAR16 *TextDeviceNode
  )
{
  return DevPathFromTextGenericPath (ACPI_DEVICE_PATH, TextDeviceNode);
}

/**
  Converts a string to EisaId.

  @param Text   The input string.

  @return UINT32 EISA ID.
**/
UINT32
EisaIdFromText (
  IN CHAR16 *Text
  )
{
  return (((Text[0] - 'A' + 1) & 0x1f) << 10)
       + (((Text[1] - 'A' + 1) & 0x1f) <<  5)
       + (((Text[2] - 'A' + 1) & 0x1f) <<  0)
       + (UINT32) (StrHexToUintn (&Text[3]) << 16)
       ;
}

/**
  Converts a text device path node to ACPI HID device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created ACPI HID device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextAcpi (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                *HIDStr;
  CHAR16                *UIDStr;
  ACPI_HID_DEVICE_PATH  *Acpi;

  HIDStr = GetNextParamStr (&TextDeviceNode);
  UIDStr = GetNextParamStr (&TextDeviceNode);
  Acpi   = (ACPI_HID_DEVICE_PATH *) CreateDeviceNode (
                                      ACPI_DEVICE_PATH,
                                      ACPI_DP,
                                      (UINT16) sizeof (ACPI_HID_DEVICE_PATH)
                                      );

  Acpi->HID = EisaIdFromText (HIDStr);
  Acpi->UID = (UINT32) Strtoi (UIDStr);

  return (EFI_DEVICE_PATH_PROTOCOL *) Acpi;
}

/**
  Converts a text device path node to ACPI HID device path structure.

  @param TextDeviceNode  The input Text device path node.
  @param PnPId           The input plug and play identification.

  @return A pointer to the newly-created ACPI HID device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
ConvertFromTextAcpi (
  IN CHAR16 *TextDeviceNode,
  IN UINT32  PnPId
  )
{
  CHAR16                *UIDStr;
  ACPI_HID_DEVICE_PATH  *Acpi;

  UIDStr = GetNextParamStr (&TextDeviceNode);
  Acpi   = (ACPI_HID_DEVICE_PATH *) CreateDeviceNode (
                                      ACPI_DEVICE_PATH,
                                      ACPI_DP,
                                      (UINT16) sizeof (ACPI_HID_DEVICE_PATH)
                                      );

  Acpi->HID = EFI_PNP_ID (PnPId);
  Acpi->UID = (UINT32) Strtoi (UIDStr);

  return (EFI_DEVICE_PATH_PROTOCOL *) Acpi;
}

/**
  Converts a text device path node to PCI root device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created PCI root device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextPciRoot (
  IN CHAR16 *TextDeviceNode
  )
{
  return ConvertFromTextAcpi (TextDeviceNode, 0x0a03);
}

/**
  Converts a text device path node to PCIE root device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created PCIE root device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextPcieRoot (
  IN CHAR16 *TextDeviceNode
  )
{
  return ConvertFromTextAcpi (TextDeviceNode, 0x0a08);
}

/**
  Converts a text device path node to Floppy device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Floppy device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextFloppy (
  IN CHAR16 *TextDeviceNode
  )
{
  return ConvertFromTextAcpi (TextDeviceNode, 0x0604);
}

/**
  Converts a text device path node to Keyboard device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created  Keyboard device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextKeyboard (
  IN CHAR16 *TextDeviceNode
  )
{
  return ConvertFromTextAcpi (TextDeviceNode, 0x0301);
}

/**
  Converts a text device path node to Serial device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Serial device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextSerial (
  IN CHAR16 *TextDeviceNode
  )
{
  return ConvertFromTextAcpi (TextDeviceNode, 0x0501);
}

/**
  Converts a text device path node to Parallel Port device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Parallel Port device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextParallelPort (
  IN CHAR16 *TextDeviceNode
  )
{
  return ConvertFromTextAcpi (TextDeviceNode, 0x0401);
}

/**
  Converts a text device path node to ACPI extension device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created ACPI extension device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextAcpiEx (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                         *HIDStr;
  CHAR16                         *CIDStr;
  CHAR16                         *UIDStr;
  CHAR16                         *HIDSTRStr;
  CHAR16                         *CIDSTRStr;
  CHAR16                         *UIDSTRStr;
  CHAR8                          *AsciiStr;
  UINT16                         Length;
  ACPI_EXTENDED_HID_DEVICE_PATH  *AcpiEx;

  HIDStr    = GetNextParamStr (&TextDeviceNode);
  CIDStr    = GetNextParamStr (&TextDeviceNode);
  UIDStr    = GetNextParamStr (&TextDeviceNode);
  HIDSTRStr = GetNextParamStr (&TextDeviceNode);
  CIDSTRStr = GetNextParamStr (&TextDeviceNode);
  UIDSTRStr = GetNextParamStr (&TextDeviceNode);

  Length    = (UINT16) (sizeof (ACPI_EXTENDED_HID_DEVICE_PATH) + StrLen (HIDSTRStr) + 1);
  Length    = (UINT16) (Length + StrLen (UIDSTRStr) + 1);
  Length    = (UINT16) (Length + StrLen (CIDSTRStr) + 1);
  AcpiEx = (ACPI_EXTENDED_HID_DEVICE_PATH *) CreateDeviceNode (
                                               ACPI_DEVICE_PATH,
                                               ACPI_EXTENDED_DP,
                                               Length
                                               );

  AcpiEx->HID = EisaIdFromText (HIDStr);
  AcpiEx->CID = EisaIdFromText (CIDStr);
  AcpiEx->UID = (UINT32) Strtoi (UIDStr);

  AsciiStr = (CHAR8 *) ((UINT8 *)AcpiEx + sizeof (ACPI_EXTENDED_HID_DEVICE_PATH));
  StrToAscii (HIDSTRStr, &AsciiStr);
  StrToAscii (UIDSTRStr, &AsciiStr);
  StrToAscii (CIDSTRStr, &AsciiStr);

  return (EFI_DEVICE_PATH_PROTOCOL *) AcpiEx;
}

/**
  Converts a text device path node to ACPI extension device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created ACPI extension device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextAcpiExp (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                         *HIDStr;
  CHAR16                         *CIDStr;
  CHAR16                         *UIDSTRStr;
  CHAR8                          *AsciiStr;
  UINT16                         Length;
  ACPI_EXTENDED_HID_DEVICE_PATH  *AcpiEx;

  HIDStr    = GetNextParamStr (&TextDeviceNode);
  CIDStr    = GetNextParamStr (&TextDeviceNode);
  UIDSTRStr = GetNextParamStr (&TextDeviceNode);
  Length    = (UINT16) (sizeof (ACPI_EXTENDED_HID_DEVICE_PATH) + StrLen (UIDSTRStr) + 3);
  AcpiEx    = (ACPI_EXTENDED_HID_DEVICE_PATH *) CreateDeviceNode (
                                                  ACPI_DEVICE_PATH,
                                                  ACPI_EXTENDED_DP,
                                                  Length
                                                  );

  AcpiEx->HID = EisaIdFromText (HIDStr);
  //
  // According to UEFI spec, the CID parametr is optional and has a default value of 0.
  // So when the CID parametr is not specified or specified as 0 in the text device node.
  // Set the CID to 0 in the ACPI extension device path structure.
  //
  if (*CIDStr == L'\0' || *CIDStr == L'0') {
    AcpiEx->CID = 0;
  } else {
    AcpiEx->CID = EisaIdFromText (CIDStr);
  }
  AcpiEx->UID = 0;

  AsciiStr = (CHAR8 *) ((UINT8 *)AcpiEx + sizeof (ACPI_EXTENDED_HID_DEVICE_PATH));
  //
  // HID string is NULL
  //
  *AsciiStr = '\0';
  //
  // Convert UID string
  //
  AsciiStr++;
  StrToAscii (UIDSTRStr, &AsciiStr);
  //
  // CID string is NULL
  //
  *AsciiStr = '\0';

  return (EFI_DEVICE_PATH_PROTOCOL *) AcpiEx;
}

/**
  Converts a text device path node to ACPI _ADR device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created ACPI _ADR device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextAcpiAdr (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                *DisplayDeviceStr;
  ACPI_ADR_DEVICE_PATH  *AcpiAdr;
  UINTN                 Index;
  UINTN                 Length;

  AcpiAdr = (ACPI_ADR_DEVICE_PATH *) CreateDeviceNode (
                                       ACPI_DEVICE_PATH,
                                       ACPI_ADR_DP,
                                       (UINT16) sizeof (ACPI_ADR_DEVICE_PATH)
                                       );
  ASSERT (AcpiAdr != NULL);

  for (Index = 0; ; Index++) {
    DisplayDeviceStr = GetNextParamStr (&TextDeviceNode);
    if (IS_NULL (*DisplayDeviceStr)) {
      break;
    }
    if (Index > 0) {
      Length  = DevicePathNodeLength (AcpiAdr);
      AcpiAdr = ReallocatePool (
                  Length,
                  Length + sizeof (UINT32),
                  AcpiAdr
                  );
      ASSERT (AcpiAdr != NULL);
      SetDevicePathNodeLength (AcpiAdr, Length + sizeof (UINT32));
    }

    (&AcpiAdr->ADR)[Index] = (UINT32) Strtoi (DisplayDeviceStr);
  }

  return (EFI_DEVICE_PATH_PROTOCOL *) AcpiAdr;
}

/**
  Converts a generic messaging text device path node to messaging device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to messaging device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextMsg (
  IN CHAR16 *TextDeviceNode
  )
{
  return DevPathFromTextGenericPath (MESSAGING_DEVICE_PATH, TextDeviceNode);
}

/**
  Converts a text device path node to Parallel Port device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Parallel Port device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextAta (
IN CHAR16 *TextDeviceNode
)
{
  CHAR16            *PrimarySecondaryStr;
  CHAR16            *SlaveMasterStr;
  CHAR16            *LunStr;
  ATAPI_DEVICE_PATH *Atapi;

  Atapi = (ATAPI_DEVICE_PATH *) CreateDeviceNode (
    MESSAGING_DEVICE_PATH,
    MSG_ATAPI_DP,
    (UINT16) sizeof (ATAPI_DEVICE_PATH)
    );

  PrimarySecondaryStr = GetNextParamStr (&TextDeviceNode);
  SlaveMasterStr      = GetNextParamStr (&TextDeviceNode);
  LunStr              = GetNextParamStr (&TextDeviceNode);

  if (StrCmp (PrimarySecondaryStr, L"Primary") == 0) {
    Atapi->PrimarySecondary = 0;
  } else if (StrCmp (PrimarySecondaryStr, L"Secondary") == 0) {
    Atapi->PrimarySecondary = 1;
  } else {
    Atapi->PrimarySecondary = (UINT8) Strtoi (PrimarySecondaryStr);
  }
  if (StrCmp (SlaveMasterStr, L"Master") == 0) {
    Atapi->SlaveMaster      = 0;
  } else if (StrCmp (SlaveMasterStr, L"Slave") == 0) {
    Atapi->SlaveMaster      = 1;
  } else {
    Atapi->SlaveMaster      = (UINT8) Strtoi (SlaveMasterStr);
  }

  Atapi->Lun                = (UINT16) Strtoi (LunStr);

  return (EFI_DEVICE_PATH_PROTOCOL *) Atapi;
}

/**
  Converts a text device path node to SCSI device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created SCSI device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextScsi (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16            *PunStr;
  CHAR16            *LunStr;
  SCSI_DEVICE_PATH  *Scsi;

  PunStr = GetNextParamStr (&TextDeviceNode);
  LunStr = GetNextParamStr (&TextDeviceNode);
  Scsi   = (SCSI_DEVICE_PATH *) CreateDeviceNode (
                                   MESSAGING_DEVICE_PATH,
                                   MSG_SCSI_DP,
                                   (UINT16) sizeof (SCSI_DEVICE_PATH)
                                   );

  Scsi->Pun = (UINT16) Strtoi (PunStr);
  Scsi->Lun = (UINT16) Strtoi (LunStr);

  return (EFI_DEVICE_PATH_PROTOCOL *) Scsi;
}

/**
  Converts a text device path node to Fibre device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Fibre device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextFibre (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                    *WWNStr;
  CHAR16                    *LunStr;
  FIBRECHANNEL_DEVICE_PATH  *Fibre;

  WWNStr = GetNextParamStr (&TextDeviceNode);
  LunStr = GetNextParamStr (&TextDeviceNode);
  Fibre  = (FIBRECHANNEL_DEVICE_PATH *) CreateDeviceNode (
                                          MESSAGING_DEVICE_PATH,
                                          MSG_FIBRECHANNEL_DP,
                                          (UINT16) sizeof (FIBRECHANNEL_DEVICE_PATH)
                                          );

  Fibre->Reserved = 0;
  Strtoi64 (WWNStr, &Fibre->WWN);
  Strtoi64 (LunStr, &Fibre->Lun);

  return (EFI_DEVICE_PATH_PROTOCOL *) Fibre;
}

/**
  Converts a text device path node to FibreEx device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created FibreEx device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextFibreEx (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                      *WWNStr;
  CHAR16                      *LunStr;
  FIBRECHANNELEX_DEVICE_PATH  *FibreEx;

  WWNStr  = GetNextParamStr (&TextDeviceNode);
  LunStr  = GetNextParamStr (&TextDeviceNode);
  FibreEx = (FIBRECHANNELEX_DEVICE_PATH *) CreateDeviceNode (
                                             MESSAGING_DEVICE_PATH,
                                             MSG_FIBRECHANNELEX_DP,
                                             (UINT16) sizeof (FIBRECHANNELEX_DEVICE_PATH)
                                             );

  FibreEx->Reserved = 0;
  Strtoi64 (WWNStr, (UINT64 *) (&FibreEx->WWN));
  Strtoi64 (LunStr, (UINT64 *) (&FibreEx->Lun));

  *(UINT64 *) (&FibreEx->WWN) = SwapBytes64 (*(UINT64 *) (&FibreEx->WWN));
  *(UINT64 *) (&FibreEx->Lun) = SwapBytes64 (*(UINT64 *) (&FibreEx->Lun));

  return (EFI_DEVICE_PATH_PROTOCOL *) FibreEx;
}

/**
  Converts a text device path node to 1394 device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created 1394 device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromText1394 (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16            *GuidStr;
  F1394_DEVICE_PATH *F1394DevPath;

  GuidStr = GetNextParamStr (&TextDeviceNode);
  F1394DevPath  = (F1394_DEVICE_PATH *) CreateDeviceNode (
                                          MESSAGING_DEVICE_PATH,
                                          MSG_1394_DP,
                                          (UINT16) sizeof (F1394_DEVICE_PATH)
                                          );

  F1394DevPath->Reserved = 0;
  F1394DevPath->Guid     = StrHexToUint64 (GuidStr);

  return (EFI_DEVICE_PATH_PROTOCOL *) F1394DevPath;
}

/**
  Converts a text device path node to USB device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created USB device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextUsb (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16          *PortStr;
  CHAR16          *InterfaceStr;
  USB_DEVICE_PATH *Usb;

  PortStr               = GetNextParamStr (&TextDeviceNode);
  InterfaceStr          = GetNextParamStr (&TextDeviceNode);
  Usb                   = (USB_DEVICE_PATH *) CreateDeviceNode (
                                                MESSAGING_DEVICE_PATH,
                                                MSG_USB_DP,
                                                (UINT16) sizeof (USB_DEVICE_PATH)
                                                );

  Usb->ParentPortNumber = (UINT8) Strtoi (PortStr);
  Usb->InterfaceNumber  = (UINT8) Strtoi (InterfaceStr);

  return (EFI_DEVICE_PATH_PROTOCOL *) Usb;
}

/**
  Converts a text device path node to I20 device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created I20 device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextI2O (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16          *TIDStr;
  I2O_DEVICE_PATH *I2ODevPath;

  TIDStr     = GetNextParamStr (&TextDeviceNode);
  I2ODevPath = (I2O_DEVICE_PATH *) CreateDeviceNode (
                                    MESSAGING_DEVICE_PATH,
                                    MSG_I2O_DP,
                                    (UINT16) sizeof (I2O_DEVICE_PATH)
                                    );

  I2ODevPath->Tid  = (UINT32) Strtoi (TIDStr);

  return (EFI_DEVICE_PATH_PROTOCOL *) I2ODevPath;
}

/**
  Converts a text device path node to Infini Band device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Infini Band device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextInfiniband (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                  *FlagsStr;
  CHAR16                  *GuidStr;
  CHAR16                  *SidStr;
  CHAR16                  *TidStr;
  CHAR16                  *DidStr;
  INFINIBAND_DEVICE_PATH  *InfiniBand;

  FlagsStr   = GetNextParamStr (&TextDeviceNode);
  GuidStr    = GetNextParamStr (&TextDeviceNode);
  SidStr     = GetNextParamStr (&TextDeviceNode);
  TidStr     = GetNextParamStr (&TextDeviceNode);
  DidStr     = GetNextParamStr (&TextDeviceNode);
  InfiniBand = (INFINIBAND_DEVICE_PATH *) CreateDeviceNode (
                                            MESSAGING_DEVICE_PATH,
                                            MSG_INFINIBAND_DP,
                                            (UINT16) sizeof (INFINIBAND_DEVICE_PATH)
                                            );

  InfiniBand->ResourceFlags = (UINT32) Strtoi (FlagsStr);
  StrToGuid (GuidStr, (EFI_GUID *) InfiniBand->PortGid);
  Strtoi64 (SidStr, &InfiniBand->ServiceId);
  Strtoi64 (TidStr, &InfiniBand->TargetPortId);
  Strtoi64 (DidStr, &InfiniBand->DeviceId);

  return (EFI_DEVICE_PATH_PROTOCOL *) InfiniBand;
}

/**
  Converts a text device path node to Vendor-Defined Messaging device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Vendor-Defined Messaging device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextVenMsg (
  IN CHAR16 *TextDeviceNode
  )
{
  return ConvertFromTextVendor (
            TextDeviceNode,
            MESSAGING_DEVICE_PATH,
            MSG_VENDOR_DP
            );
}

/**
  Converts a text device path node to Vendor defined PC-ANSI device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Vendor defined PC-ANSI device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextVenPcAnsi (
  IN CHAR16 *TextDeviceNode
  )
{
  VENDOR_DEVICE_PATH  *Vendor;

  Vendor = (VENDOR_DEVICE_PATH *) CreateDeviceNode (
                                    MESSAGING_DEVICE_PATH,
                                    MSG_VENDOR_DP,
                                    (UINT16) sizeof (VENDOR_DEVICE_PATH));
  CopyGuid (&Vendor->Guid, &gEfiPcAnsiGuid);

  return (EFI_DEVICE_PATH_PROTOCOL *) Vendor;
}

/**
  Converts a text device path node to Vendor defined VT100 device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Vendor defined VT100 device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextVenVt100 (
  IN CHAR16 *TextDeviceNode
  )
{
  VENDOR_DEVICE_PATH  *Vendor;

  Vendor = (VENDOR_DEVICE_PATH *) CreateDeviceNode (
                                    MESSAGING_DEVICE_PATH,
                                    MSG_VENDOR_DP,
                                    (UINT16) sizeof (VENDOR_DEVICE_PATH));
  CopyGuid (&Vendor->Guid, &gEfiVT100Guid);

  return (EFI_DEVICE_PATH_PROTOCOL *) Vendor;
}

/**
  Converts a text device path node to Vendor defined VT100 Plus device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Vendor defined VT100 Plus device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextVenVt100Plus (
  IN CHAR16 *TextDeviceNode
  )
{
  VENDOR_DEVICE_PATH  *Vendor;

  Vendor = (VENDOR_DEVICE_PATH *) CreateDeviceNode (
                                    MESSAGING_DEVICE_PATH,
                                    MSG_VENDOR_DP,
                                    (UINT16) sizeof (VENDOR_DEVICE_PATH));
  CopyGuid (&Vendor->Guid, &gEfiVT100PlusGuid);

  return (EFI_DEVICE_PATH_PROTOCOL *) Vendor;
}

/**
  Converts a text device path node to Vendor defined UTF8 device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Vendor defined UTF8 device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextVenUtf8 (
  IN CHAR16 *TextDeviceNode
  )
{
  VENDOR_DEVICE_PATH  *Vendor;

  Vendor = (VENDOR_DEVICE_PATH *) CreateDeviceNode (
                                    MESSAGING_DEVICE_PATH,
                                    MSG_VENDOR_DP,
                                    (UINT16) sizeof (VENDOR_DEVICE_PATH));
  CopyGuid (&Vendor->Guid, &gEfiVTUTF8Guid);

  return (EFI_DEVICE_PATH_PROTOCOL *) Vendor;
}

/**
  Converts a text device path node to UART Flow Control device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created UART Flow Control device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextUartFlowCtrl (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                        *ValueStr;
  UART_FLOW_CONTROL_DEVICE_PATH *UartFlowControl;

  ValueStr        = GetNextParamStr (&TextDeviceNode);
  UartFlowControl = (UART_FLOW_CONTROL_DEVICE_PATH *) CreateDeviceNode (
                                                        MESSAGING_DEVICE_PATH,
                                                        MSG_VENDOR_DP,
                                                        (UINT16) sizeof (UART_FLOW_CONTROL_DEVICE_PATH)
                                                        );

  CopyGuid (&UartFlowControl->Guid, &gEfiUartDevicePathGuid);
  if (StrCmp (ValueStr, L"XonXoff") == 0) {
    UartFlowControl->FlowControlMap = 2;
  } else if (StrCmp (ValueStr, L"Hardware") == 0) {
    UartFlowControl->FlowControlMap = 1;
  } else {
    UartFlowControl->FlowControlMap = 0;
  }

  return (EFI_DEVICE_PATH_PROTOCOL *) UartFlowControl;
}

/**
  Converts a text device path node to Serial Attached SCSI device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Serial Attached SCSI device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextSAS (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16          *AddressStr;
  CHAR16          *LunStr;
  CHAR16          *RTPStr;
  CHAR16          *SASSATAStr;
  CHAR16          *LocationStr;
  CHAR16          *ConnectStr;
  CHAR16          *DriveBayStr;
  CHAR16          *ReservedStr;
  UINT16          Info;
  UINT16          Uint16;
  SAS_DEVICE_PATH *Sas;

  AddressStr  = GetNextParamStr (&TextDeviceNode);
  LunStr      = GetNextParamStr (&TextDeviceNode);
  RTPStr      = GetNextParamStr (&TextDeviceNode);
  SASSATAStr  = GetNextParamStr (&TextDeviceNode);
  LocationStr = GetNextParamStr (&TextDeviceNode);
  ConnectStr  = GetNextParamStr (&TextDeviceNode);
  DriveBayStr = GetNextParamStr (&TextDeviceNode);
  ReservedStr = GetNextParamStr (&TextDeviceNode);
  Sas         = (SAS_DEVICE_PATH *) CreateDeviceNode (
                                       MESSAGING_DEVICE_PATH,
                                       MSG_VENDOR_DP,
                                       (UINT16) sizeof (SAS_DEVICE_PATH)
                                       );

  CopyGuid (&Sas->Guid, &gEfiSasDevicePathGuid);
  Strtoi64 (AddressStr, &Sas->SasAddress);
  Strtoi64 (LunStr, &Sas->Lun);
  Sas->RelativeTargetPort = (UINT16) Strtoi (RTPStr);

  if (StrCmp (SASSATAStr, L"NoTopology") == 0) {
    Info = 0x0;

  } else if ((StrCmp (SASSATAStr, L"SATA") == 0) || (StrCmp (SASSATAStr, L"SAS") == 0)) {

    Uint16 = (UINT16) Strtoi (DriveBayStr);
    if (Uint16 == 0) {
      Info = 0x1;
    } else {
      Info = (UINT16) (0x2 | ((Uint16 - 1) << 8));
    }

    if (StrCmp (SASSATAStr, L"SATA") == 0) {
      Info |= BIT4;
    }

    //
    // Location is an integer between 0 and 1 or else
    // the keyword Internal (0) or External (1).
    //
    if (StrCmp (LocationStr, L"External") == 0) {
      Uint16 = 1;
    } else if (StrCmp (LocationStr, L"Internal") == 0) {
      Uint16 = 0;
    } else {
      Uint16 = ((UINT16) Strtoi (LocationStr) & BIT0);
    }
    Info |= (Uint16 << 5);

    //
    // Connect is an integer between 0 and 3 or else
    // the keyword Direct (0) or Expanded (1).
    //
    if (StrCmp (ConnectStr, L"Expanded") == 0) {
      Uint16 = 1;
    } else if (StrCmp (ConnectStr, L"Direct") == 0) {
      Uint16 = 0;
    } else {
      Uint16 = ((UINT16) Strtoi (ConnectStr) & (BIT0 | BIT1));
    }
    Info |= (Uint16 << 6);

  } else {
    Info = (UINT16) Strtoi (SASSATAStr);
  }

  Sas->DeviceTopology = Info;
  Sas->Reserved       = (UINT32) Strtoi (ReservedStr);

  return (EFI_DEVICE_PATH_PROTOCOL *) Sas;
}

/**
  Converts a text device path node to Serial Attached SCSI Ex device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Serial Attached SCSI Ex device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextSasEx (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16            *AddressStr;
  CHAR16            *LunStr;
  CHAR16            *RTPStr;
  CHAR16            *SASSATAStr;
  CHAR16            *LocationStr;
  CHAR16            *ConnectStr;
  CHAR16            *DriveBayStr;
  UINT16            Info;
  UINT16            Uint16;
  UINT64            SasAddress;
  UINT64            Lun;
  SASEX_DEVICE_PATH *SasEx;

  AddressStr  = GetNextParamStr (&TextDeviceNode);
  LunStr      = GetNextParamStr (&TextDeviceNode);
  RTPStr      = GetNextParamStr (&TextDeviceNode);
  SASSATAStr  = GetNextParamStr (&TextDeviceNode);
  LocationStr = GetNextParamStr (&TextDeviceNode);
  ConnectStr  = GetNextParamStr (&TextDeviceNode);
  DriveBayStr = GetNextParamStr (&TextDeviceNode);
  SasEx       = (SASEX_DEVICE_PATH *) CreateDeviceNode (
                                        MESSAGING_DEVICE_PATH,
                                        MSG_SASEX_DP,
                                        (UINT16) sizeof (SASEX_DEVICE_PATH)
                                        );

  Strtoi64 (AddressStr, &SasAddress);
  Strtoi64 (LunStr,     &Lun);
  WriteUnaligned64 ((UINT64 *) &SasEx->SasAddress, SwapBytes64 (SasAddress));
  WriteUnaligned64 ((UINT64 *) &SasEx->Lun,        SwapBytes64 (Lun));
  SasEx->RelativeTargetPort      = (UINT16) Strtoi (RTPStr);

  if (StrCmp (SASSATAStr, L"NoTopology") == 0) {
    Info = 0x0;

  } else if ((StrCmp (SASSATAStr, L"SATA") == 0) || (StrCmp (SASSATAStr, L"SAS") == 0)) {

    Uint16 = (UINT16) Strtoi (DriveBayStr);
    if (Uint16 == 0) {
      Info = 0x1;
    } else {
      Info = (UINT16) (0x2 | ((Uint16 - 1) << 8));
    }

    if (StrCmp (SASSATAStr, L"SATA") == 0) {
      Info |= BIT4;
    }

    //
    // Location is an integer between 0 and 1 or else
    // the keyword Internal (0) or External (1).
    //
    if (StrCmp (LocationStr, L"External") == 0) {
      Uint16 = 1;
    } else if (StrCmp (LocationStr, L"Internal") == 0) {
      Uint16 = 0;
    } else {
      Uint16 = ((UINT16) Strtoi (LocationStr) & BIT0);
    }
    Info |= (Uint16 << 5);

    //
    // Connect is an integer between 0 and 3 or else
    // the keyword Direct (0) or Expanded (1).
    //
    if (StrCmp (ConnectStr, L"Expanded") == 0) {
      Uint16 = 1;
    } else if (StrCmp (ConnectStr, L"Direct") == 0) {
      Uint16 = 0;
    } else {
      Uint16 = ((UINT16) Strtoi (ConnectStr) & (BIT0 | BIT1));
    }
    Info |= (Uint16 << 6);

  } else {
    Info = (UINT16) Strtoi (SASSATAStr);
  }

  SasEx->DeviceTopology = Info;

  return (EFI_DEVICE_PATH_PROTOCOL *) SasEx;
}

/**
  Converts a text device path node to NVM Express Namespace device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created NVM Express Namespace device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextNVMe (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                     *NamespaceIdStr;
  CHAR16                     *NamespaceUuidStr;
  NVME_NAMESPACE_DEVICE_PATH *Nvme;
  UINT8                      *Uuid;
  UINTN                      Index;

  NamespaceIdStr   = GetNextParamStr (&TextDeviceNode);
  NamespaceUuidStr = GetNextParamStr (&TextDeviceNode);
  Nvme = (NVME_NAMESPACE_DEVICE_PATH *) CreateDeviceNode (
    MESSAGING_DEVICE_PATH,
    MSG_NVME_NAMESPACE_DP,
    (UINT16) sizeof (NVME_NAMESPACE_DEVICE_PATH)
    );

  Nvme->NamespaceId = (UINT32) Strtoi (NamespaceIdStr);
  Uuid = (UINT8 *) &Nvme->NamespaceUuid;

  Index = sizeof (Nvme->NamespaceUuid) / sizeof (UINT8);
  while (Index-- != 0) {
    Uuid[Index] = (UINT8) StrHexToUintn (SplitStr (&NamespaceUuidStr, L'-'));
  }

  return (EFI_DEVICE_PATH_PROTOCOL *) Nvme;
}

/**
  Converts a text device path node to UFS device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created UFS device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextUfs (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16            *PunStr;
  CHAR16            *LunStr;
  UFS_DEVICE_PATH   *Ufs;

  PunStr = GetNextParamStr (&TextDeviceNode);
  LunStr = GetNextParamStr (&TextDeviceNode);
  Ufs    = (UFS_DEVICE_PATH *) CreateDeviceNode (
                                 MESSAGING_DEVICE_PATH,
                                 MSG_UFS_DP,
                                 (UINT16) sizeof (UFS_DEVICE_PATH)
                                 );

  Ufs->Pun = (UINT8) Strtoi (PunStr);
  Ufs->Lun = (UINT8) Strtoi (LunStr);

  return (EFI_DEVICE_PATH_PROTOCOL *) Ufs;
}

/**
  Converts a text device path node to SD (Secure Digital) device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created SD device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextSd (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16            *SlotNumberStr;
  SD_DEVICE_PATH    *Sd;

  SlotNumberStr = GetNextParamStr (&TextDeviceNode);
  Sd            = (SD_DEVICE_PATH *) CreateDeviceNode (
                                       MESSAGING_DEVICE_PATH,
                                       MSG_SD_DP,
                                       (UINT16) sizeof (SD_DEVICE_PATH)
                                       );

  Sd->SlotNumber = (UINT8) Strtoi (SlotNumberStr);

  return (EFI_DEVICE_PATH_PROTOCOL *) Sd;
}

/**
  Converts a text device path node to EMMC (Embedded MMC) device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created EMMC device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextEmmc (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16            *SlotNumberStr;
  EMMC_DEVICE_PATH  *Emmc;

  SlotNumberStr = GetNextParamStr (&TextDeviceNode);
  Emmc          = (EMMC_DEVICE_PATH *) CreateDeviceNode (
                                       MESSAGING_DEVICE_PATH,
                                       MSG_EMMC_DP,
                                       (UINT16) sizeof (EMMC_DEVICE_PATH)
                                       );

  Emmc->SlotNumber = (UINT8) Strtoi (SlotNumberStr);

  return (EFI_DEVICE_PATH_PROTOCOL *) Emmc;
}

/**
  Converts a text device path node to Debug Port device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Debug Port device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextDebugPort (
  IN CHAR16 *TextDeviceNode
  )
{
  VENDOR_DEVICE_PATH  *Vend;

  Vend = (VENDOR_DEVICE_PATH *) CreateDeviceNode (
                                                    MESSAGING_DEVICE_PATH,
                                                    MSG_VENDOR_DP,
                                                    (UINT16) sizeof (VENDOR_DEVICE_PATH)
                                                    );

  CopyGuid (&Vend->Guid, &gEfiDebugPortProtocolGuid);

  return (EFI_DEVICE_PATH_PROTOCOL *) Vend;
}

/**
  Converts a text device path node to MAC device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created MAC device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextMAC (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                *AddressStr;
  CHAR16                *IfTypeStr;
  UINTN                 Length;
  MAC_ADDR_DEVICE_PATH  *MACDevPath;

  AddressStr    = GetNextParamStr (&TextDeviceNode);
  IfTypeStr     = GetNextParamStr (&TextDeviceNode);
  MACDevPath    = (MAC_ADDR_DEVICE_PATH *) CreateDeviceNode (
                                              MESSAGING_DEVICE_PATH,
                                              MSG_MAC_ADDR_DP,
                                              (UINT16) sizeof (MAC_ADDR_DEVICE_PATH)
                                              );

  MACDevPath->IfType   = (UINT8) Strtoi (IfTypeStr);

  Length = sizeof (EFI_MAC_ADDRESS);
  if (MACDevPath->IfType == 0x01 || MACDevPath->IfType == 0x00) {
    Length = 6;
  }

  StrHexToBytes (AddressStr, Length * 2, MACDevPath->MacAddress.Addr, Length);

  return (EFI_DEVICE_PATH_PROTOCOL *) MACDevPath;
}


/**
  Converts a text format to the network protocol ID.

  @param Text  String of protocol field.

  @return Network protocol ID .

**/
UINTN
NetworkProtocolFromText (
  IN CHAR16 *Text
  )
{
  if (StrCmp (Text, L"UDP") == 0) {
    return RFC_1700_UDP_PROTOCOL;
  }

  if (StrCmp (Text, L"TCP") == 0) {
    return RFC_1700_TCP_PROTOCOL;
  }

  return Strtoi (Text);
}


/**
  Converts a text device path node to IPV4 device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created IPV4 device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextIPv4 (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16            *RemoteIPStr;
  CHAR16            *ProtocolStr;
  CHAR16            *TypeStr;
  CHAR16            *LocalIPStr;
  CHAR16            *GatewayIPStr;
  CHAR16            *SubnetMaskStr;
  IPv4_DEVICE_PATH  *IPv4;

  RemoteIPStr           = GetNextParamStr (&TextDeviceNode);
  ProtocolStr           = GetNextParamStr (&TextDeviceNode);
  TypeStr               = GetNextParamStr (&TextDeviceNode);
  LocalIPStr            = GetNextParamStr (&TextDeviceNode);
  GatewayIPStr          = GetNextParamStr (&TextDeviceNode);
  SubnetMaskStr         = GetNextParamStr (&TextDeviceNode);
  IPv4                  = (IPv4_DEVICE_PATH *) CreateDeviceNode (
                                                 MESSAGING_DEVICE_PATH,
                                                 MSG_IPv4_DP,
                                                 (UINT16) sizeof (IPv4_DEVICE_PATH)
                                                 );

  StrToIpv4Address (RemoteIPStr, NULL, &IPv4->RemoteIpAddress, NULL);
  IPv4->Protocol = (UINT16) NetworkProtocolFromText (ProtocolStr);
  if (StrCmp (TypeStr, L"Static") == 0) {
    IPv4->StaticIpAddress = TRUE;
  } else {
    IPv4->StaticIpAddress = FALSE;
  }

  StrToIpv4Address (LocalIPStr, NULL, &IPv4->LocalIpAddress, NULL);
  if (!IS_NULL (*GatewayIPStr) && !IS_NULL (*SubnetMaskStr)) {
    StrToIpv4Address (GatewayIPStr,  NULL, &IPv4->GatewayIpAddress, NULL);
    StrToIpv4Address (SubnetMaskStr, NULL, &IPv4->SubnetMask,       NULL);
  } else {
    ZeroMem (&IPv4->GatewayIpAddress, sizeof (IPv4->GatewayIpAddress));
    ZeroMem (&IPv4->SubnetMask,    sizeof (IPv4->SubnetMask));
  }

  IPv4->LocalPort       = 0;
  IPv4->RemotePort      = 0;

  return (EFI_DEVICE_PATH_PROTOCOL *) IPv4;
}

/**
  Converts a text device path node to IPV6 device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created IPV6 device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextIPv6 (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16            *RemoteIPStr;
  CHAR16            *ProtocolStr;
  CHAR16            *TypeStr;
  CHAR16            *LocalIPStr;
  CHAR16            *GatewayIPStr;
  CHAR16            *PrefixLengthStr;
  IPv6_DEVICE_PATH  *IPv6;

  RemoteIPStr           = GetNextParamStr (&TextDeviceNode);
  ProtocolStr           = GetNextParamStr (&TextDeviceNode);
  TypeStr               = GetNextParamStr (&TextDeviceNode);
  LocalIPStr            = GetNextParamStr (&TextDeviceNode);
  PrefixLengthStr       = GetNextParamStr (&TextDeviceNode);
  GatewayIPStr          = GetNextParamStr (&TextDeviceNode);
  IPv6                  = (IPv6_DEVICE_PATH *) CreateDeviceNode (
                                                 MESSAGING_DEVICE_PATH,
                                                 MSG_IPv6_DP,
                                                 (UINT16) sizeof (IPv6_DEVICE_PATH)
                                                 );

  StrToIpv6Address (RemoteIPStr, NULL, &IPv6->RemoteIpAddress, NULL);
  IPv6->Protocol        = (UINT16) NetworkProtocolFromText (ProtocolStr);
  if (StrCmp (TypeStr, L"Static") == 0) {
    IPv6->IpAddressOrigin = 0;
  } else if (StrCmp (TypeStr, L"StatelessAutoConfigure") == 0) {
    IPv6->IpAddressOrigin = 1;
  } else {
    IPv6->IpAddressOrigin = 2;
  }

  StrToIpv6Address (LocalIPStr, NULL, &IPv6->LocalIpAddress, NULL);
  if (!IS_NULL (*GatewayIPStr) && !IS_NULL (*PrefixLengthStr)) {
    StrToIpv6Address (GatewayIPStr, NULL, &IPv6->GatewayIpAddress, NULL);
    IPv6->PrefixLength = (UINT8) Strtoi (PrefixLengthStr);
  } else {
    ZeroMem (&IPv6->GatewayIpAddress, sizeof (IPv6->GatewayIpAddress));
    IPv6->PrefixLength = 0;
  }

  IPv6->LocalPort       = 0;
  IPv6->RemotePort      = 0;

  return (EFI_DEVICE_PATH_PROTOCOL *) IPv6;
}

/**
  Converts a text device path node to UART device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created UART device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextUart (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16            *BaudStr;
  CHAR16            *DataBitsStr;
  CHAR16            *ParityStr;
  CHAR16            *StopBitsStr;
  UART_DEVICE_PATH  *Uart;

  BaudStr         = GetNextParamStr (&TextDeviceNode);
  DataBitsStr     = GetNextParamStr (&TextDeviceNode);
  ParityStr       = GetNextParamStr (&TextDeviceNode);
  StopBitsStr     = GetNextParamStr (&TextDeviceNode);
  Uart            = (UART_DEVICE_PATH *) CreateDeviceNode (
                                           MESSAGING_DEVICE_PATH,
                                           MSG_UART_DP,
                                           (UINT16) sizeof (UART_DEVICE_PATH)
                                           );

  if (StrCmp (BaudStr, L"DEFAULT") == 0) {
    Uart->BaudRate = 115200;
  } else {
    Strtoi64 (BaudStr, &Uart->BaudRate);
  }
  Uart->DataBits  = (UINT8) ((StrCmp (DataBitsStr, L"DEFAULT") == 0) ? 8 : Strtoi (DataBitsStr));
  switch (*ParityStr) {
  case L'D':
    Uart->Parity = 0;
    break;

  case L'N':
    Uart->Parity = 1;
    break;

  case L'E':
    Uart->Parity = 2;
    break;

  case L'O':
    Uart->Parity = 3;
    break;

  case L'M':
    Uart->Parity = 4;
    break;

  case L'S':
    Uart->Parity = 5;
    break;

  default:
    Uart->Parity = (UINT8) Strtoi (ParityStr);
    break;
  }

  if (StrCmp (StopBitsStr, L"D") == 0) {
    Uart->StopBits = (UINT8) 0;
  } else if (StrCmp (StopBitsStr, L"1") == 0) {
    Uart->StopBits = (UINT8) 1;
  } else if (StrCmp (StopBitsStr, L"1.5") == 0) {
    Uart->StopBits = (UINT8) 2;
  } else if (StrCmp (StopBitsStr, L"2") == 0) {
    Uart->StopBits = (UINT8) 3;
  } else {
    Uart->StopBits = (UINT8) Strtoi (StopBitsStr);
  }

  return (EFI_DEVICE_PATH_PROTOCOL *) Uart;
}

/**
  Converts a text device path node to USB class device path structure.

  @param TextDeviceNode  The input Text device path node.
  @param UsbClassText    A pointer to USB_CLASS_TEXT structure to be integrated to USB Class Text.

  @return A pointer to the newly-created USB class device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
ConvertFromTextUsbClass (
  IN CHAR16         *TextDeviceNode,
  IN USB_CLASS_TEXT *UsbClassText
  )
{
  CHAR16                *VIDStr;
  CHAR16                *PIDStr;
  CHAR16                *ClassStr;
  CHAR16                *SubClassStr;
  CHAR16                *ProtocolStr;
  USB_CLASS_DEVICE_PATH *UsbClass;

  UsbClass    = (USB_CLASS_DEVICE_PATH *) CreateDeviceNode (
                                            MESSAGING_DEVICE_PATH,
                                            MSG_USB_CLASS_DP,
                                            (UINT16) sizeof (USB_CLASS_DEVICE_PATH)
                                            );

  VIDStr      = GetNextParamStr (&TextDeviceNode);
  PIDStr      = GetNextParamStr (&TextDeviceNode);
  if (UsbClassText->ClassExist) {
    ClassStr = GetNextParamStr (&TextDeviceNode);
    if (*ClassStr == L'\0') {
      UsbClass->DeviceClass = 0xFF;
    } else {
      UsbClass->DeviceClass = (UINT8) Strtoi (ClassStr);
    }
  } else {
    UsbClass->DeviceClass = UsbClassText->Class;
  }
  if (UsbClassText->SubClassExist) {
    SubClassStr = GetNextParamStr (&TextDeviceNode);
    if (*SubClassStr == L'\0') {
      UsbClass->DeviceSubClass = 0xFF;
    } else {
      UsbClass->DeviceSubClass = (UINT8) Strtoi (SubClassStr);
    }
  } else {
    UsbClass->DeviceSubClass = UsbClassText->SubClass;
  }

  ProtocolStr = GetNextParamStr (&TextDeviceNode);

  if (*VIDStr == L'\0') {
    UsbClass->VendorId        = 0xFFFF;
  } else {
    UsbClass->VendorId        = (UINT16) Strtoi (VIDStr);
  }
  if (*PIDStr == L'\0') {
    UsbClass->ProductId       = 0xFFFF;
  } else {
    UsbClass->ProductId       = (UINT16) Strtoi (PIDStr);
  }
  if (*ProtocolStr == L'\0') {
    UsbClass->DeviceProtocol  = 0xFF;
  } else {
    UsbClass->DeviceProtocol  = (UINT8) Strtoi (ProtocolStr);
  }

  return (EFI_DEVICE_PATH_PROTOCOL *) UsbClass;
}


/**
  Converts a text device path node to USB class device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created USB class device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextUsbClass (
  IN CHAR16 *TextDeviceNode
  )
{
  USB_CLASS_TEXT  UsbClassText;

  UsbClassText.ClassExist    = TRUE;
  UsbClassText.SubClassExist = TRUE;

  return ConvertFromTextUsbClass (TextDeviceNode, &UsbClassText);
}

/**
  Converts a text device path node to USB audio device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created USB audio device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextUsbAudio (
  IN CHAR16 *TextDeviceNode
  )
{
  USB_CLASS_TEXT  UsbClassText;

  UsbClassText.ClassExist    = FALSE;
  UsbClassText.Class         = USB_CLASS_AUDIO;
  UsbClassText.SubClassExist = TRUE;

  return ConvertFromTextUsbClass (TextDeviceNode, &UsbClassText);
}

/**
  Converts a text device path node to USB CDC Control device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created USB CDC Control device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextUsbCDCControl (
  IN CHAR16 *TextDeviceNode
  )
{
  USB_CLASS_TEXT  UsbClassText;

  UsbClassText.ClassExist    = FALSE;
  UsbClassText.Class         = USB_CLASS_CDCCONTROL;
  UsbClassText.SubClassExist = TRUE;

  return ConvertFromTextUsbClass (TextDeviceNode, &UsbClassText);
}

/**
  Converts a text device path node to USB HID device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created USB HID device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextUsbHID (
  IN CHAR16 *TextDeviceNode
  )
{
  USB_CLASS_TEXT  UsbClassText;

  UsbClassText.ClassExist    = FALSE;
  UsbClassText.Class         = USB_CLASS_HID;
  UsbClassText.SubClassExist = TRUE;

  return ConvertFromTextUsbClass (TextDeviceNode, &UsbClassText);
}

/**
  Converts a text device path node to USB Image device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created USB Image device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextUsbImage (
  IN CHAR16 *TextDeviceNode
  )
{
  USB_CLASS_TEXT  UsbClassText;

  UsbClassText.ClassExist    = FALSE;
  UsbClassText.Class         = USB_CLASS_IMAGE;
  UsbClassText.SubClassExist = TRUE;

  return ConvertFromTextUsbClass (TextDeviceNode, &UsbClassText);
}

/**
  Converts a text device path node to USB Print device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created USB Print device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextUsbPrinter (
  IN CHAR16 *TextDeviceNode
  )
{
  USB_CLASS_TEXT  UsbClassText;

  UsbClassText.ClassExist    = FALSE;
  UsbClassText.Class         = USB_CLASS_PRINTER;
  UsbClassText.SubClassExist = TRUE;

  return ConvertFromTextUsbClass (TextDeviceNode, &UsbClassText);
}

/**
  Converts a text device path node to USB mass storage device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created USB mass storage device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextUsbMassStorage (
  IN CHAR16 *TextDeviceNode
  )
{
  USB_CLASS_TEXT  UsbClassText;

  UsbClassText.ClassExist    = FALSE;
  UsbClassText.Class         = USB_CLASS_MASS_STORAGE;
  UsbClassText.SubClassExist = TRUE;

  return ConvertFromTextUsbClass (TextDeviceNode, &UsbClassText);
}

/**
  Converts a text device path node to USB HUB device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created USB HUB device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextUsbHub (
  IN CHAR16 *TextDeviceNode
  )
{
  USB_CLASS_TEXT  UsbClassText;

  UsbClassText.ClassExist    = FALSE;
  UsbClassText.Class         = USB_CLASS_HUB;
  UsbClassText.SubClassExist = TRUE;

  return ConvertFromTextUsbClass (TextDeviceNode, &UsbClassText);
}

/**
  Converts a text device path node to USB CDC data device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created USB CDC data device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextUsbCDCData (
  IN CHAR16 *TextDeviceNode
  )
{
  USB_CLASS_TEXT  UsbClassText;

  UsbClassText.ClassExist    = FALSE;
  UsbClassText.Class         = USB_CLASS_CDCDATA;
  UsbClassText.SubClassExist = TRUE;

  return ConvertFromTextUsbClass (TextDeviceNode, &UsbClassText);
}

/**
  Converts a text device path node to USB smart card device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created USB smart card device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextUsbSmartCard (
  IN CHAR16 *TextDeviceNode
  )
{
  USB_CLASS_TEXT  UsbClassText;

  UsbClassText.ClassExist    = FALSE;
  UsbClassText.Class         = USB_CLASS_SMART_CARD;
  UsbClassText.SubClassExist = TRUE;

  return ConvertFromTextUsbClass (TextDeviceNode, &UsbClassText);
}

/**
  Converts a text device path node to USB video device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created USB video device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextUsbVideo (
  IN CHAR16 *TextDeviceNode
  )
{
  USB_CLASS_TEXT  UsbClassText;

  UsbClassText.ClassExist    = FALSE;
  UsbClassText.Class         = USB_CLASS_VIDEO;
  UsbClassText.SubClassExist = TRUE;

  return ConvertFromTextUsbClass (TextDeviceNode, &UsbClassText);
}

/**
  Converts a text device path node to USB diagnostic device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created USB diagnostic device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextUsbDiagnostic (
  IN CHAR16 *TextDeviceNode
  )
{
  USB_CLASS_TEXT  UsbClassText;

  UsbClassText.ClassExist    = FALSE;
  UsbClassText.Class         = USB_CLASS_DIAGNOSTIC;
  UsbClassText.SubClassExist = TRUE;

  return ConvertFromTextUsbClass (TextDeviceNode, &UsbClassText);
}

/**
  Converts a text device path node to USB wireless device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created USB wireless device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextUsbWireless (
  IN CHAR16 *TextDeviceNode
  )
{
  USB_CLASS_TEXT  UsbClassText;

  UsbClassText.ClassExist    = FALSE;
  UsbClassText.Class         = USB_CLASS_WIRELESS;
  UsbClassText.SubClassExist = TRUE;

  return ConvertFromTextUsbClass (TextDeviceNode, &UsbClassText);
}

/**
  Converts a text device path node to USB device firmware update device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created USB device firmware update device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextUsbDeviceFirmwareUpdate (
  IN CHAR16 *TextDeviceNode
  )
{
  USB_CLASS_TEXT  UsbClassText;

  UsbClassText.ClassExist    = FALSE;
  UsbClassText.Class         = USB_CLASS_RESERVE;
  UsbClassText.SubClassExist = FALSE;
  UsbClassText.SubClass      = USB_SUBCLASS_FW_UPDATE;

  return ConvertFromTextUsbClass (TextDeviceNode, &UsbClassText);
}

/**
  Converts a text device path node to USB IRDA bridge device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created USB IRDA bridge device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextUsbIrdaBridge (
  IN CHAR16 *TextDeviceNode
  )
{
  USB_CLASS_TEXT  UsbClassText;

  UsbClassText.ClassExist    = FALSE;
  UsbClassText.Class         = USB_CLASS_RESERVE;
  UsbClassText.SubClassExist = FALSE;
  UsbClassText.SubClass      = USB_SUBCLASS_IRDA_BRIDGE;

  return ConvertFromTextUsbClass (TextDeviceNode, &UsbClassText);
}

/**
  Converts a text device path node to USB text and measurement device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created USB text and measurement device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextUsbTestAndMeasurement (
  IN CHAR16 *TextDeviceNode
  )
{
  USB_CLASS_TEXT  UsbClassText;

  UsbClassText.ClassExist    = FALSE;
  UsbClassText.Class         = USB_CLASS_RESERVE;
  UsbClassText.SubClassExist = FALSE;
  UsbClassText.SubClass      = USB_SUBCLASS_TEST;

  return ConvertFromTextUsbClass (TextDeviceNode, &UsbClassText);
}

/**
  Converts a text device path node to USB WWID device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created USB WWID device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextUsbWwid (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                *VIDStr;
  CHAR16                *PIDStr;
  CHAR16                *InterfaceNumStr;
  CHAR16                *SerialNumberStr;
  USB_WWID_DEVICE_PATH  *UsbWwid;
  UINTN                 SerialNumberStrLen;

  VIDStr                   = GetNextParamStr (&TextDeviceNode);
  PIDStr                   = GetNextParamStr (&TextDeviceNode);
  InterfaceNumStr          = GetNextParamStr (&TextDeviceNode);
  SerialNumberStr          = GetNextParamStr (&TextDeviceNode);
  SerialNumberStrLen       = StrLen (SerialNumberStr);
  if (SerialNumberStrLen >= 2 &&
      SerialNumberStr[0] == L'\"' &&
      SerialNumberStr[SerialNumberStrLen - 1] == L'\"'
    ) {
    SerialNumberStr[SerialNumberStrLen - 1] = L'\0';
    SerialNumberStr++;
    SerialNumberStrLen -= 2;
  }
  UsbWwid                  = (USB_WWID_DEVICE_PATH *) CreateDeviceNode (
                                                         MESSAGING_DEVICE_PATH,
                                                         MSG_USB_WWID_DP,
                                                         (UINT16) (sizeof (USB_WWID_DEVICE_PATH) + SerialNumberStrLen * sizeof (CHAR16))
                                                         );
  UsbWwid->VendorId        = (UINT16) Strtoi (VIDStr);
  UsbWwid->ProductId       = (UINT16) Strtoi (PIDStr);
  UsbWwid->InterfaceNumber = (UINT16) Strtoi (InterfaceNumStr);

  //
  // There is no memory allocated in UsbWwid for the '\0' in SerialNumberStr.
  // Therefore, the '\0' will not be copied.
  //
  CopyMem(
    (UINT8 *) UsbWwid + sizeof (USB_WWID_DEVICE_PATH),
    SerialNumberStr,
    SerialNumberStrLen * sizeof (CHAR16)
    );

  return (EFI_DEVICE_PATH_PROTOCOL *) UsbWwid;
}

/**
  Converts a text device path node to Logic Unit device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Logic Unit device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextUnit (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                          *LunStr;
  DEVICE_LOGICAL_UNIT_DEVICE_PATH *LogicalUnit;

  LunStr      = GetNextParamStr (&TextDeviceNode);
  LogicalUnit = (DEVICE_LOGICAL_UNIT_DEVICE_PATH *) CreateDeviceNode (
                                                      MESSAGING_DEVICE_PATH,
                                                      MSG_DEVICE_LOGICAL_UNIT_DP,
                                                      (UINT16) sizeof (DEVICE_LOGICAL_UNIT_DEVICE_PATH)
                                                      );

  LogicalUnit->Lun  = (UINT8) Strtoi (LunStr);

  return (EFI_DEVICE_PATH_PROTOCOL *) LogicalUnit;
}

/**
  Converts a text device path node to iSCSI device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created iSCSI device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextiSCSI (
  IN CHAR16 *TextDeviceNode
  )
{
  UINT16                      Options;
  CHAR16                      *NameStr;
  CHAR16                      *PortalGroupStr;
  CHAR16                      *LunStr;
  CHAR16                      *HeaderDigestStr;
  CHAR16                      *DataDigestStr;
  CHAR16                      *AuthenticationStr;
  CHAR16                      *ProtocolStr;
  CHAR8                       *AsciiStr;
  ISCSI_DEVICE_PATH_WITH_NAME *ISCSIDevPath;
  UINT64                      Lun;

  NameStr           = GetNextParamStr (&TextDeviceNode);
  PortalGroupStr    = GetNextParamStr (&TextDeviceNode);
  LunStr            = GetNextParamStr (&TextDeviceNode);
  HeaderDigestStr   = GetNextParamStr (&TextDeviceNode);
  DataDigestStr     = GetNextParamStr (&TextDeviceNode);
  AuthenticationStr = GetNextParamStr (&TextDeviceNode);
  ProtocolStr       = GetNextParamStr (&TextDeviceNode);
  ISCSIDevPath      = (ISCSI_DEVICE_PATH_WITH_NAME *) CreateDeviceNode (
                                                        MESSAGING_DEVICE_PATH,
                                                        MSG_ISCSI_DP,
                                                        (UINT16) (sizeof (ISCSI_DEVICE_PATH_WITH_NAME) + StrLen (NameStr))
                                                        );

  AsciiStr = ISCSIDevPath->TargetName;
  StrToAscii (NameStr, &AsciiStr);

  ISCSIDevPath->TargetPortalGroupTag = (UINT16) Strtoi (PortalGroupStr);
  Strtoi64 (LunStr, &Lun);
  WriteUnaligned64 ((UINT64 *) &ISCSIDevPath->Lun, SwapBytes64 (Lun));

  Options = 0x0000;
  if (StrCmp (HeaderDigestStr, L"CRC32C") == 0) {
    Options |= 0x0002;
  }

  if (StrCmp (DataDigestStr, L"CRC32C") == 0) {
    Options |= 0x0008;
  }

  if (StrCmp (AuthenticationStr, L"None") == 0) {
    Options |= 0x0800;
  }

  if (StrCmp (AuthenticationStr, L"CHAP_UNI") == 0) {
    Options |= 0x1000;
  }

  ISCSIDevPath->LoginOption      = (UINT16) Options;

  if (IS_NULL (*ProtocolStr) || (StrCmp (ProtocolStr, L"TCP") == 0)) {
    ISCSIDevPath->NetworkProtocol = 0;
  } else {
    //
    // Undefined and reserved.
    //
    ISCSIDevPath->NetworkProtocol = 1;
  }

  return (EFI_DEVICE_PATH_PROTOCOL *) ISCSIDevPath;
}

/**
  Converts a text device path node to VLAN device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created VLAN device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextVlan (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16            *VlanStr;
  VLAN_DEVICE_PATH  *Vlan;

  VlanStr = GetNextParamStr (&TextDeviceNode);
  Vlan    = (VLAN_DEVICE_PATH *) CreateDeviceNode (
                                   MESSAGING_DEVICE_PATH,
                                   MSG_VLAN_DP,
                                   (UINT16) sizeof (VLAN_DEVICE_PATH)
                                   );

  Vlan->VlanId = (UINT16) Strtoi (VlanStr);

  return (EFI_DEVICE_PATH_PROTOCOL *) Vlan;
}

/**
  Converts a text device path node to Bluetooth device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Bluetooth device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextBluetooth (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                  *BluetoothStr;
  BLUETOOTH_DEVICE_PATH   *BluetoothDp;

  BluetoothStr = GetNextParamStr (&TextDeviceNode);
  BluetoothDp  = (BLUETOOTH_DEVICE_PATH *) CreateDeviceNode (
                                             MESSAGING_DEVICE_PATH,
                                             MSG_BLUETOOTH_DP,
                                             (UINT16) sizeof (BLUETOOTH_DEVICE_PATH)
                                             );
  StrHexToBytes (
    BluetoothStr,
    sizeof (BLUETOOTH_ADDRESS) * 2,
    BluetoothDp->BD_ADDR.Address,
    sizeof (BLUETOOTH_ADDRESS)
    );
  return (EFI_DEVICE_PATH_PROTOCOL *) BluetoothDp;
}

/**
  Converts a text device path node to Wi-Fi device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Wi-Fi device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextWiFi (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                *SSIdStr;
  CHAR8                 AsciiStr[33];
  UINTN                 DataLen;
  WIFI_DEVICE_PATH      *WiFiDp;

  SSIdStr = GetNextParamStr (&TextDeviceNode);
  WiFiDp  = (WIFI_DEVICE_PATH *) CreateDeviceNode (
                                   MESSAGING_DEVICE_PATH,
                                   MSG_WIFI_DP,
                                   (UINT16) sizeof (WIFI_DEVICE_PATH)
                                   );

  if (NULL != SSIdStr) {
    DataLen = StrLen (SSIdStr);
    if (StrLen (SSIdStr) > 32) {
      SSIdStr[32] = L'\0';
      DataLen     = 32;
    }

    UnicodeStrToAsciiStrS (SSIdStr, AsciiStr, sizeof (AsciiStr));
    CopyMem(WiFiDp->SSId, AsciiStr, DataLen);
  }

  return (EFI_DEVICE_PATH_PROTOCOL *) WiFiDp;
}

/**
  Converts a text device path node to Bluetooth LE device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Bluetooth LE device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextBluetoothLE (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                     *BluetoothLeAddrStr;
  CHAR16                     *BluetoothLeAddrTypeStr;
  BLUETOOTH_LE_DEVICE_PATH   *BluetoothLeDp;

  BluetoothLeAddrStr     = GetNextParamStr (&TextDeviceNode);
  BluetoothLeAddrTypeStr = GetNextParamStr (&TextDeviceNode);
  BluetoothLeDp = (BLUETOOTH_LE_DEVICE_PATH *) CreateDeviceNode (
                                                 MESSAGING_DEVICE_PATH,
                                                 MSG_BLUETOOTH_LE_DP,
                                                 (UINT16) sizeof (BLUETOOTH_LE_DEVICE_PATH)
                                                 );

  BluetoothLeDp->Address.Type = (UINT8) Strtoi (BluetoothLeAddrTypeStr);
  StrHexToBytes (
    BluetoothLeAddrStr, sizeof (BluetoothLeDp->Address.Address) * 2,
    BluetoothLeDp->Address.Address, sizeof (BluetoothLeDp->Address.Address)
    );
  return (EFI_DEVICE_PATH_PROTOCOL *) BluetoothLeDp;
}

/**
  Converts a text device path node to DNS device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created DNS device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextDns (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16            *DeviceNodeStr;
  CHAR16            *DeviceNodeStrPtr;
  UINT32            DnsServerIpCount;
  UINT16            DnsDeviceNodeLength;
  DNS_DEVICE_PATH   *DnsDeviceNode;
  UINT32            DnsServerIpIndex;
  CHAR16            *DnsServerIp;


  //
  // Count the DNS server address number.
  //
  DeviceNodeStr = UefiDevicePathLibStrDuplicate (TextDeviceNode);
  if (DeviceNodeStr == NULL) {
    return NULL;
  }

  DeviceNodeStrPtr = DeviceNodeStr;

  DnsServerIpCount = 0;
  while (DeviceNodeStrPtr != NULL && *DeviceNodeStrPtr != L'\0') {
    GetNextParamStr (&DeviceNodeStrPtr);
    DnsServerIpCount ++;
  }

  FreePool(DeviceNodeStr);
  DeviceNodeStr = NULL;

  //
  // One or more instances of the DNS server address in EFI_IP_ADDRESS,
  // otherwise, NULL will be returned.
  //
  if (DnsServerIpCount == 0) {
    return NULL;
  }

  //
  // Create the DNS DeviceNode.
  //
  DnsDeviceNodeLength = (UINT16) (sizeof (EFI_DEVICE_PATH_PROTOCOL) + sizeof (UINT8) + DnsServerIpCount * sizeof (EFI_IP_ADDRESS));
  DnsDeviceNode       = (DNS_DEVICE_PATH *) CreateDeviceNode (
                                              MESSAGING_DEVICE_PATH,
                                              MSG_DNS_DP,
                                              DnsDeviceNodeLength
                                              );
  if (DnsDeviceNode == NULL) {
    return NULL;
  }

  //
  // Confirm the DNS server address is IPv4 or IPv6 type.
  //
  DeviceNodeStrPtr = TextDeviceNode;
  while (!IS_NULL (*DeviceNodeStrPtr)) {
    if (*DeviceNodeStrPtr == L'.') {
      DnsDeviceNode->IsIPv6 = 0x00;
      break;
    }

    if (*DeviceNodeStrPtr == L':') {
      DnsDeviceNode->IsIPv6 = 0x01;
      break;
    }

    DeviceNodeStrPtr++;
  }

  for (DnsServerIpIndex = 0; DnsServerIpIndex < DnsServerIpCount; DnsServerIpIndex++) {
    DnsServerIp = GetNextParamStr (&TextDeviceNode);
    if (DnsDeviceNode->IsIPv6 == 0x00) {
      StrToIpv4Address (DnsServerIp,  NULL, &(DnsDeviceNode->DnsServerIp[DnsServerIpIndex].v4), NULL);
    } else {
      StrToIpv6Address (DnsServerIp, NULL, &(DnsDeviceNode->DnsServerIp[DnsServerIpIndex].v6), NULL);
    }
  }

  return (EFI_DEVICE_PATH_PROTOCOL *) DnsDeviceNode;
}

/**
  Converts a text device path node to URI device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created URI device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextUri (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16           *UriStr;
  UINTN            UriLength;
  URI_DEVICE_PATH  *Uri;

  UriStr = GetNextParamStr (&TextDeviceNode);
  UriLength = StrnLenS (UriStr, MAX_UINT16 - sizeof (URI_DEVICE_PATH));
  Uri    = (URI_DEVICE_PATH *) CreateDeviceNode (
                                 MESSAGING_DEVICE_PATH,
                                 MSG_URI_DP,
                                 (UINT16) (sizeof (URI_DEVICE_PATH) + UriLength)
                                 );

  while (UriLength-- != 0) {
    Uri->Uri[UriLength] = (CHAR8) UriStr[UriLength];
  }

  return (EFI_DEVICE_PATH_PROTOCOL *) Uri;
}

/**
  Converts a media text device path node to media device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to media device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextMediaPath (
  IN CHAR16 *TextDeviceNode
  )
{
  return DevPathFromTextGenericPath (MEDIA_DEVICE_PATH, TextDeviceNode);
}

/**
  Converts a text device path node to HD device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created HD device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextHD (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                *PartitionStr;
  CHAR16                *TypeStr;
  CHAR16                *SignatureStr;
  CHAR16                *StartStr;
  CHAR16                *SizeStr;
  UINT32                Signature32;
  HARDDRIVE_DEVICE_PATH *Hd;

  PartitionStr        = GetNextParamStr (&TextDeviceNode);
  TypeStr             = GetNextParamStr (&TextDeviceNode);
  SignatureStr        = GetNextParamStr (&TextDeviceNode);
  StartStr            = GetNextParamStr (&TextDeviceNode);
  SizeStr             = GetNextParamStr (&TextDeviceNode);
  Hd                  = (HARDDRIVE_DEVICE_PATH *) CreateDeviceNode (
                                                    MEDIA_DEVICE_PATH,
                                                    MEDIA_HARDDRIVE_DP,
                                                    (UINT16) sizeof (HARDDRIVE_DEVICE_PATH)
                                                    );

  Hd->PartitionNumber = (UINT32) Strtoi (PartitionStr);

  ZeroMem (Hd->Signature, 16);
  Hd->MBRType = (UINT8) 0;

  if (StrCmp (TypeStr, L"MBR") == 0) {
    Hd->SignatureType = SIGNATURE_TYPE_MBR;
    Hd->MBRType       = 0x01;

    Signature32       = (UINT32) Strtoi (SignatureStr);
    CopyMem(Hd->Signature, &Signature32, sizeof (UINT32));
  } else if (StrCmp (TypeStr, L"GPT") == 0) {
    Hd->SignatureType = SIGNATURE_TYPE_GUID;
    Hd->MBRType       = 0x02;

    StrToGuid (SignatureStr, (EFI_GUID *) Hd->Signature);
  } else {
    Hd->SignatureType = (UINT8) Strtoi (TypeStr);
  }

  Strtoi64 (StartStr, &Hd->PartitionStart);
  Strtoi64 (SizeStr, &Hd->PartitionSize);

  return (EFI_DEVICE_PATH_PROTOCOL *) Hd;
}

/**
  Converts a text device path node to CDROM device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created CDROM device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextCDROM (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16            *EntryStr;
  CHAR16            *StartStr;
  CHAR16            *SizeStr;
  CDROM_DEVICE_PATH *CDROMDevPath;

  EntryStr              = GetNextParamStr (&TextDeviceNode);
  StartStr              = GetNextParamStr (&TextDeviceNode);
  SizeStr               = GetNextParamStr (&TextDeviceNode);
  CDROMDevPath          = (CDROM_DEVICE_PATH *) CreateDeviceNode (
                                                  MEDIA_DEVICE_PATH,
                                                  MEDIA_CDROM_DP,
                                                  (UINT16) sizeof (CDROM_DEVICE_PATH)
                                                  );

  CDROMDevPath->BootEntry = (UINT32) Strtoi (EntryStr);
  Strtoi64 (StartStr, &CDROMDevPath->PartitionStart);
  Strtoi64 (SizeStr, &CDROMDevPath->PartitionSize);

  return (EFI_DEVICE_PATH_PROTOCOL *) CDROMDevPath;
}

/**
  Converts a text device path node to Vendor-defined media device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Vendor-defined media device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextVenMedia (
  IN CHAR16 *TextDeviceNode
  )
{
  return ConvertFromTextVendor (
           TextDeviceNode,
           MEDIA_DEVICE_PATH,
           MEDIA_VENDOR_DP
           );
}

/**
  Converts a text device path node to File device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created File device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextFilePath (
  IN CHAR16 *TextDeviceNode
  )
{
  FILEPATH_DEVICE_PATH  *File;

  File = (FILEPATH_DEVICE_PATH *) CreateDeviceNode (
                                    MEDIA_DEVICE_PATH,
                                    MEDIA_FILEPATH_DP,
                                    (UINT16) (sizeof (FILEPATH_DEVICE_PATH) + StrLen (TextDeviceNode) * 2)
                                    );

  StrCpyS (File->PathName, StrLen (TextDeviceNode) + 1, TextDeviceNode);

  return (EFI_DEVICE_PATH_PROTOCOL *) File;
}

/**
  Converts a text device path node to Media protocol device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Media protocol device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextMedia (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                      *GuidStr;
  MEDIA_PROTOCOL_DEVICE_PATH  *Media;

  GuidStr = GetNextParamStr (&TextDeviceNode);
  Media   = (MEDIA_PROTOCOL_DEVICE_PATH *) CreateDeviceNode (
                                             MEDIA_DEVICE_PATH,
                                             MEDIA_PROTOCOL_DP,
                                             (UINT16) sizeof (MEDIA_PROTOCOL_DEVICE_PATH)
                                             );

  StrToGuid (GuidStr, &Media->Protocol);

  return (EFI_DEVICE_PATH_PROTOCOL *) Media;
}

/**
  Converts a text device path node to firmware volume device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created firmware volume device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextFv (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                    *GuidStr;
  MEDIA_FW_VOL_DEVICE_PATH  *Fv;

  GuidStr = GetNextParamStr (&TextDeviceNode);
  Fv      = (MEDIA_FW_VOL_DEVICE_PATH *) CreateDeviceNode (
                                           MEDIA_DEVICE_PATH,
                                           MEDIA_PIWG_FW_VOL_DP,
                                           (UINT16) sizeof (MEDIA_FW_VOL_DEVICE_PATH)
                                           );

  StrToGuid (GuidStr, &Fv->FvName);

  return (EFI_DEVICE_PATH_PROTOCOL *) Fv;
}

/**
  Converts a text device path node to firmware file device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created firmware file device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextFvFile (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                             *GuidStr;
  MEDIA_FW_VOL_FILEPATH_DEVICE_PATH  *FvFile;

  GuidStr = GetNextParamStr (&TextDeviceNode);
  FvFile  = (MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *) CreateDeviceNode (
                                                    MEDIA_DEVICE_PATH,
                                                    MEDIA_PIWG_FW_FILE_DP,
                                                    (UINT16) sizeof (MEDIA_FW_VOL_FILEPATH_DEVICE_PATH)
                                                    );

  StrToGuid (GuidStr, &FvFile->FvFileName);

  return (EFI_DEVICE_PATH_PROTOCOL *) FvFile;
}

/**
  Converts a text device path node to text relative offset device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Text device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextRelativeOffsetRange (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                                  *StartingOffsetStr;
  CHAR16                                  *EndingOffsetStr;
  MEDIA_RELATIVE_OFFSET_RANGE_DEVICE_PATH *Offset;

  StartingOffsetStr = GetNextParamStr (&TextDeviceNode);
  EndingOffsetStr   = GetNextParamStr (&TextDeviceNode);
  Offset            = (MEDIA_RELATIVE_OFFSET_RANGE_DEVICE_PATH *) CreateDeviceNode (
                                                                    MEDIA_DEVICE_PATH,
                                                                    MEDIA_RELATIVE_OFFSET_RANGE_DP,
                                                                    (UINT16) sizeof (MEDIA_RELATIVE_OFFSET_RANGE_DEVICE_PATH)
                                                                    );

  Strtoi64 (StartingOffsetStr, &Offset->StartingOffset);
  Strtoi64 (EndingOffsetStr, &Offset->EndingOffset);

  return (EFI_DEVICE_PATH_PROTOCOL *) Offset;
}

/**
  Converts a text device path node to text ram disk device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Text device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextRamDisk (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                                  *StartingAddrStr;
  CHAR16                                  *EndingAddrStr;
  CHAR16                                  *TypeGuidStr;
  CHAR16                                  *InstanceStr;
  MEDIA_RAM_DISK_DEVICE_PATH              *RamDisk;
  UINT64                                  StartingAddr;
  UINT64                                  EndingAddr;

  StartingAddrStr = GetNextParamStr (&TextDeviceNode);
  EndingAddrStr   = GetNextParamStr (&TextDeviceNode);
  InstanceStr     = GetNextParamStr (&TextDeviceNode);
  TypeGuidStr     = GetNextParamStr (&TextDeviceNode);
  RamDisk         = (MEDIA_RAM_DISK_DEVICE_PATH *) CreateDeviceNode (
                                                     MEDIA_DEVICE_PATH,
                                                     MEDIA_RAM_DISK_DP,
                                                     (UINT16) sizeof (MEDIA_RAM_DISK_DEVICE_PATH)
                                                     );

  Strtoi64 (StartingAddrStr, &StartingAddr);
  WriteUnaligned64 ((UINT64 *) &(RamDisk->StartingAddr[0]), StartingAddr);
  Strtoi64 (EndingAddrStr, &EndingAddr);
  WriteUnaligned64 ((UINT64 *) &(RamDisk->EndingAddr[0]), EndingAddr);
  RamDisk->Instance = (UINT16) Strtoi (InstanceStr);
  StrToGuid (TypeGuidStr, &RamDisk->TypeGuid);

  return (EFI_DEVICE_PATH_PROTOCOL *) RamDisk;
}

/**
  Converts a text device path node to text virtual disk device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Text device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextVirtualDisk (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                                  *StartingAddrStr;
  CHAR16                                  *EndingAddrStr;
  CHAR16                                  *InstanceStr;
  MEDIA_RAM_DISK_DEVICE_PATH              *RamDisk;
  UINT64                                  StartingAddr;
  UINT64                                  EndingAddr;

  StartingAddrStr = GetNextParamStr (&TextDeviceNode);
  EndingAddrStr   = GetNextParamStr (&TextDeviceNode);
  InstanceStr     = GetNextParamStr (&TextDeviceNode);

  RamDisk         = (MEDIA_RAM_DISK_DEVICE_PATH *) CreateDeviceNode (
                                                     MEDIA_DEVICE_PATH,
                                                     MEDIA_RAM_DISK_DP,
                                                     (UINT16) sizeof (MEDIA_RAM_DISK_DEVICE_PATH)
                                                     );

  Strtoi64 (StartingAddrStr, &StartingAddr);
  WriteUnaligned64 ((UINT64 *) &(RamDisk->StartingAddr[0]), StartingAddr);
  Strtoi64 (EndingAddrStr, &EndingAddr);
  WriteUnaligned64 ((UINT64 *) &(RamDisk->EndingAddr[0]), EndingAddr);
  RamDisk->Instance = (UINT16) Strtoi (InstanceStr);
  CopyGuid (&RamDisk->TypeGuid, &gEfiVirtualDiskGuid);

  return (EFI_DEVICE_PATH_PROTOCOL *) RamDisk;
}

/**
  Converts a text device path node to text virtual cd device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Text device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextVirtualCd (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                                  *StartingAddrStr;
  CHAR16                                  *EndingAddrStr;
  CHAR16                                  *InstanceStr;
  MEDIA_RAM_DISK_DEVICE_PATH              *RamDisk;
  UINT64                                  StartingAddr;
  UINT64                                  EndingAddr;

  StartingAddrStr = GetNextParamStr (&TextDeviceNode);
  EndingAddrStr   = GetNextParamStr (&TextDeviceNode);
  InstanceStr     = GetNextParamStr (&TextDeviceNode);

  RamDisk         = (MEDIA_RAM_DISK_DEVICE_PATH *) CreateDeviceNode (
                                                     MEDIA_DEVICE_PATH,
                                                     MEDIA_RAM_DISK_DP,
                                                     (UINT16) sizeof (MEDIA_RAM_DISK_DEVICE_PATH)
                                                     );

  Strtoi64 (StartingAddrStr, &StartingAddr);
  WriteUnaligned64 ((UINT64 *) &(RamDisk->StartingAddr[0]), StartingAddr);
  Strtoi64 (EndingAddrStr, &EndingAddr);
  WriteUnaligned64 ((UINT64 *) &(RamDisk->EndingAddr[0]), EndingAddr);
  RamDisk->Instance = (UINT16) Strtoi (InstanceStr);
  CopyGuid (&RamDisk->TypeGuid, &gEfiVirtualCdGuid);

  return (EFI_DEVICE_PATH_PROTOCOL *) RamDisk;
}

/**
  Converts a text device path node to text persistent virtual disk device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Text device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextPersistentVirtualDisk (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                                  *StartingAddrStr;
  CHAR16                                  *EndingAddrStr;
  CHAR16                                  *InstanceStr;
  MEDIA_RAM_DISK_DEVICE_PATH              *RamDisk;
  UINT64                                  StartingAddr;
  UINT64                                  EndingAddr;

  StartingAddrStr = GetNextParamStr (&TextDeviceNode);
  EndingAddrStr   = GetNextParamStr (&TextDeviceNode);
  InstanceStr     = GetNextParamStr (&TextDeviceNode);

  RamDisk         = (MEDIA_RAM_DISK_DEVICE_PATH *) CreateDeviceNode (
                                                     MEDIA_DEVICE_PATH,
                                                     MEDIA_RAM_DISK_DP,
                                                     (UINT16) sizeof (MEDIA_RAM_DISK_DEVICE_PATH)
                                                     );

  Strtoi64 (StartingAddrStr, &StartingAddr);
  WriteUnaligned64 ((UINT64 *) &(RamDisk->StartingAddr[0]), StartingAddr);
  Strtoi64 (EndingAddrStr, &EndingAddr);
  WriteUnaligned64 ((UINT64 *) &(RamDisk->EndingAddr[0]), EndingAddr);
  RamDisk->Instance = (UINT16) Strtoi (InstanceStr);
  CopyGuid (&RamDisk->TypeGuid, &gEfiPersistentVirtualDiskGuid);

  return (EFI_DEVICE_PATH_PROTOCOL *) RamDisk;
}

/**
  Converts a text device path node to text persistent virtual cd device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created Text device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextPersistentVirtualCd (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16                                  *StartingAddrStr;
  CHAR16                                  *EndingAddrStr;
  CHAR16                                  *InstanceStr;
  MEDIA_RAM_DISK_DEVICE_PATH              *RamDisk;
  UINT64                                  StartingAddr;
  UINT64                                  EndingAddr;

  StartingAddrStr = GetNextParamStr (&TextDeviceNode);
  EndingAddrStr   = GetNextParamStr (&TextDeviceNode);
  InstanceStr     = GetNextParamStr (&TextDeviceNode);

  RamDisk         = (MEDIA_RAM_DISK_DEVICE_PATH *) CreateDeviceNode (
                                                     MEDIA_DEVICE_PATH,
                                                     MEDIA_RAM_DISK_DP,
                                                     (UINT16) sizeof (MEDIA_RAM_DISK_DEVICE_PATH)
                                                     );

  Strtoi64 (StartingAddrStr, &StartingAddr);
  WriteUnaligned64 ((UINT64 *) &(RamDisk->StartingAddr[0]), StartingAddr);
  Strtoi64 (EndingAddrStr, &EndingAddr);
  WriteUnaligned64 ((UINT64 *) &(RamDisk->EndingAddr[0]), EndingAddr);
  RamDisk->Instance = (UINT16) Strtoi (InstanceStr);
  CopyGuid (&RamDisk->TypeGuid, &gEfiPersistentVirtualCdGuid);

  return (EFI_DEVICE_PATH_PROTOCOL *) RamDisk;
}

/**
  Converts a BBS text device path node to BBS device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to BBS device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextBbsPath (
  IN CHAR16 *TextDeviceNode
  )
{
  return DevPathFromTextGenericPath (BBS_DEVICE_PATH, TextDeviceNode);
}

/**
  Converts a text device path node to BIOS Boot Specification device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created BIOS Boot Specification device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextBBS (
  IN CHAR16 *TextDeviceNode
  )
{
  CHAR16              *TypeStr;
  CHAR16              *IdStr;
  CHAR16              *FlagsStr;
  CHAR8               *AsciiStr;
  BBS_BBS_DEVICE_PATH *Bbs;

  TypeStr   = GetNextParamStr (&TextDeviceNode);
  IdStr     = GetNextParamStr (&TextDeviceNode);
  FlagsStr  = GetNextParamStr (&TextDeviceNode);
  Bbs       = (BBS_BBS_DEVICE_PATH *) CreateDeviceNode (
                                        BBS_DEVICE_PATH,
                                        BBS_BBS_DP,
                                        (UINT16) (sizeof (BBS_BBS_DEVICE_PATH) + StrLen (IdStr))
                                        );

  if (StrCmp (TypeStr, L"Floppy") == 0) {
    Bbs->DeviceType = BBS_TYPE_FLOPPY;
  } else if (StrCmp (TypeStr, L"HD") == 0) {
    Bbs->DeviceType = BBS_TYPE_HARDDRIVE;
  } else if (StrCmp (TypeStr, L"CDROM") == 0) {
    Bbs->DeviceType = BBS_TYPE_CDROM;
  } else if (StrCmp (TypeStr, L"PCMCIA") == 0) {
    Bbs->DeviceType = BBS_TYPE_PCMCIA;
  } else if (StrCmp (TypeStr, L"USB") == 0) {
    Bbs->DeviceType = BBS_TYPE_USB;
  } else if (StrCmp (TypeStr, L"Network") == 0) {
    Bbs->DeviceType = BBS_TYPE_EMBEDDED_NETWORK;
  } else {
    Bbs->DeviceType = (UINT16) Strtoi (TypeStr);
  }

  AsciiStr = Bbs->String;
  StrToAscii (IdStr, &AsciiStr);

  Bbs->StatusFlag = (UINT16) Strtoi (FlagsStr);

  return (EFI_DEVICE_PATH_PROTOCOL *) Bbs;
}

/**
  Converts a text device path node to SATA device path structure.

  @param TextDeviceNode  The input Text device path node.

  @return A pointer to the newly-created SATA device path structure.

**/
EFI_DEVICE_PATH_PROTOCOL *
DevPathFromTextSata (
  IN CHAR16 *TextDeviceNode
  )
{
  SATA_DEVICE_PATH *Sata;
  CHAR16           *Param1;
  CHAR16           *Param2;
  CHAR16           *Param3;

  Param1 = GetNextParamStr (&TextDeviceNode);
  Param2 = GetNextParamStr (&TextDeviceNode);
  Param3 = GetNextParamStr (&TextDeviceNode);

  Sata = (SATA_DEVICE_PATH *) CreateDeviceNode (
                                MESSAGING_DEVICE_PATH,
                                MSG_SATA_DP,
                                (UINT16) sizeof (SATA_DEVICE_PATH)
                                );
  Sata->HBAPortNumber            = (UINT16) Strtoi (Param1);

  //
  // According to UEFI spec, if PMPN is not provided, the default is 0xFFFF
  //
  if (*Param2 == L'\0' ) {
    Sata->PortMultiplierPortNumber = 0xFFFF;
  } else {
    Sata->PortMultiplierPortNumber = (UINT16) Strtoi (Param2);
  }
  Sata->Lun                      = (UINT16) Strtoi (Param3);

  return (EFI_DEVICE_PATH_PROTOCOL *) Sata;
}

GLOBAL_REMOVE_IF_UNREFERENCED DEVICE_PATH_FROM_TEXT_TABLE mUefiDevicePathLibDevPathFromTextTable[] = {
  {L"Path",                    DevPathFromTextPath                    },

  {L"HardwarePath",            DevPathFromTextHardwarePath            },
  {L"Pci",                     DevPathFromTextPci                     },
  {L"PcCard",                  DevPathFromTextPcCard                  },
  {L"MemoryMapped",            DevPathFromTextMemoryMapped            },
  {L"VenHw",                   DevPathFromTextVenHw                   },
  {L"Ctrl",                    DevPathFromTextCtrl                    },
  {L"BMC",                     DevPathFromTextBmc                     },

  {L"AcpiPath",                DevPathFromTextAcpiPath                },
  {L"Acpi",                    DevPathFromTextAcpi                    },
  {L"PciRoot",                 DevPathFromTextPciRoot                 },
  {L"PcieRoot",                DevPathFromTextPcieRoot                },
  {L"Floppy",                  DevPathFromTextFloppy                  },
  {L"Keyboard",                DevPathFromTextKeyboard                },
  {L"Serial",                  DevPathFromTextSerial                  },
  {L"ParallelPort",            DevPathFromTextParallelPort            },
  {L"AcpiEx",                  DevPathFromTextAcpiEx                  },
  {L"AcpiExp",                 DevPathFromTextAcpiExp                 },
  {L"AcpiAdr",                 DevPathFromTextAcpiAdr                 },

  {L"Msg",                     DevPathFromTextMsg                     },
  {L"Ata",                     DevPathFromTextAta                     },
  {L"Scsi",                    DevPathFromTextScsi                    },
  {L"Fibre",                   DevPathFromTextFibre                   },
  {L"FibreEx",                 DevPathFromTextFibreEx                 },
  {L"I1394",                   DevPathFromText1394                    },
  {L"USB",                     DevPathFromTextUsb                     },
  {L"I2O",                     DevPathFromTextI2O                     },
  {L"Infiniband",              DevPathFromTextInfiniband              },
  {L"VenMsg",                  DevPathFromTextVenMsg                  },
  {L"VenPcAnsi",               DevPathFromTextVenPcAnsi               },
  {L"VenVt100",                DevPathFromTextVenVt100                },
  {L"VenVt100Plus",            DevPathFromTextVenVt100Plus            },
  {L"VenUtf8",                 DevPathFromTextVenUtf8                 },
  {L"UartFlowCtrl",            DevPathFromTextUartFlowCtrl            },
  {L"SAS",                     DevPathFromTextSAS                     },
  {L"SasEx",                   DevPathFromTextSasEx                   },
  {L"NVMe",                    DevPathFromTextNVMe                    },
  {L"UFS",                     DevPathFromTextUfs                     },
  {L"SD",                      DevPathFromTextSd                      },
  {L"eMMC",                    DevPathFromTextEmmc                    },
  {L"DebugPort",               DevPathFromTextDebugPort               },
  {L"MAC",                     DevPathFromTextMAC                     },
  {L"IPv4",                    DevPathFromTextIPv4                    },
  {L"IPv6",                    DevPathFromTextIPv6                    },
  {L"Uart",                    DevPathFromTextUart                    },
  {L"UsbClass",                DevPathFromTextUsbClass                },
  {L"UsbAudio",                DevPathFromTextUsbAudio                },
  {L"UsbCDCControl",           DevPathFromTextUsbCDCControl           },
  {L"UsbHID",                  DevPathFromTextUsbHID                  },
  {L"UsbImage",                DevPathFromTextUsbImage                },
  {L"UsbPrinter",              DevPathFromTextUsbPrinter              },
  {L"UsbMassStorage",          DevPathFromTextUsbMassStorage          },
  {L"UsbHub",                  DevPathFromTextUsbHub                  },
  {L"UsbCDCData",              DevPathFromTextUsbCDCData              },
  {L"UsbSmartCard",            DevPathFromTextUsbSmartCard            },
  {L"UsbVideo",                DevPathFromTextUsbVideo                },
  {L"UsbDiagnostic",           DevPathFromTextUsbDiagnostic           },
  {L"UsbWireless",             DevPathFromTextUsbWireless             },
  {L"UsbDeviceFirmwareUpdate", DevPathFromTextUsbDeviceFirmwareUpdate },
  {L"UsbIrdaBridge",           DevPathFromTextUsbIrdaBridge           },
  {L"UsbTestAndMeasurement",   DevPathFromTextUsbTestAndMeasurement   },
  {L"UsbWwid",                 DevPathFromTextUsbWwid                 },
  {L"Unit",                    DevPathFromTextUnit                    },
  {L"iSCSI",                   DevPathFromTextiSCSI                   },
  {L"Vlan",                    DevPathFromTextVlan                    },
  {L"Dns",                     DevPathFromTextDns                     },
  {L"Uri",                     DevPathFromTextUri                     },
  {L"Bluetooth",               DevPathFromTextBluetooth               },
  {L"Wi-Fi",                   DevPathFromTextWiFi                    },
  {L"BluetoothLE",             DevPathFromTextBluetoothLE             },
  {L"MediaPath",               DevPathFromTextMediaPath               },
  {L"HD",                      DevPathFromTextHD                      },
  {L"CDROM",                   DevPathFromTextCDROM                   },
  {L"VenMedia",                DevPathFromTextVenMedia                },
  {L"Media",                   DevPathFromTextMedia                   },
  {L"Fv",                      DevPathFromTextFv                      },
  {L"FvFile",                  DevPathFromTextFvFile                  },
  {L"Offset",                  DevPathFromTextRelativeOffsetRange     },
  {L"RamDisk",                 DevPathFromTextRamDisk                 },
  {L"VirtualDisk",             DevPathFromTextVirtualDisk             },
  {L"VirtualCD",               DevPathFromTextVirtualCd               },
  {L"PersistentVirtualDisk",   DevPathFromTextPersistentVirtualDisk   },
  {L"PersistentVirtualCD",     DevPathFromTextPersistentVirtualCd     },

  {L"BbsPath",                 DevPathFromTextBbsPath                 },
  {L"BBS",                     DevPathFromTextBBS                     },
  {L"Sata",                    DevPathFromTextSata                    },
  {NULL, NULL}
};

/**
  Convert text to the binary representation of a device node.

  @param TextDeviceNode  TextDeviceNode points to the text representation of a device
                         node. Conversion starts with the first character and continues
                         until the first non-device node character.

  @return A pointer to the EFI device node or NULL if TextDeviceNode is NULL or there was
          insufficient memory or text unsupported.

**/
EFI_DEVICE_PATH_PROTOCOL *
EFIAPI
UefiDevicePathLibConvertTextToDeviceNode (
  IN CONST CHAR16 *TextDeviceNode
  )
{
  DEVICE_PATH_FROM_TEXT    FromText;
  CHAR16                   *ParamStr;
  EFI_DEVICE_PATH_PROTOCOL *DeviceNode;
  CHAR16                   *DeviceNodeStr;
  UINTN                    Index;

  if ((TextDeviceNode == NULL) || (IS_NULL (*TextDeviceNode))) {
    return NULL;
  }

  ParamStr      = NULL;
  FromText      = NULL;
  DeviceNodeStr = UefiDevicePathLibStrDuplicate (TextDeviceNode);
  ASSERT (DeviceNodeStr != NULL);

  for (Index = 0; mUefiDevicePathLibDevPathFromTextTable[Index].Function != NULL; Index++) {
    ParamStr = GetParamByNodeName (DeviceNodeStr, mUefiDevicePathLibDevPathFromTextTable[Index].DevicePathNodeText);
    if (ParamStr != NULL) {
      FromText = mUefiDevicePathLibDevPathFromTextTable[Index].Function;
      break;
    }
  }

  if (FromText == NULL) {
    //
    // A file path
    //
    FromText = DevPathFromTextFilePath;
    DeviceNode = FromText (DeviceNodeStr);
  } else {
    DeviceNode = FromText (ParamStr);
    FreePool(ParamStr);
  }

  FreePool(DeviceNodeStr);

  return DeviceNode;
}

/**
  Convert text to the binary representation of a device path.


  @param TextDevicePath  TextDevicePath points to the text representation of a device
                         path. Conversion starts with the first character and continues
                         until the first non-device node character.

  @return A pointer to the allocated device path or NULL if TextDeviceNode is NULL or
          there was insufficient memory.

**/
EFI_DEVICE_PATH_PROTOCOL *
EFIAPI
UefiDevicePathLibConvertTextToDevicePath (
  IN CONST CHAR16 *TextDevicePath
  )
{
  EFI_DEVICE_PATH_PROTOCOL *DeviceNode;
  EFI_DEVICE_PATH_PROTOCOL *NewDevicePath;
  CHAR16                   *DevicePathStr;
  CHAR16                   *Str;
  CHAR16                   *DeviceNodeStr;
  BOOLEAN                  IsInstanceEnd;
  EFI_DEVICE_PATH_PROTOCOL *DevicePath;

  if ((TextDevicePath == NULL) || (IS_NULL (*TextDevicePath))) {
    return NULL;
  }

  DevicePath = (EFI_DEVICE_PATH_PROTOCOL *) AllocatePool (END_DEVICE_PATH_LENGTH);
  ASSERT (DevicePath != NULL);
  SetDevicePathEndNode (DevicePath);

  DevicePathStr = UefiDevicePathLibStrDuplicate (TextDevicePath);

  Str           = DevicePathStr;
  while ((DeviceNodeStr = GetNextDeviceNodeStr (&Str, &IsInstanceEnd)) != NULL) {
    DeviceNode = UefiDevicePathLibConvertTextToDeviceNode (DeviceNodeStr);

    NewDevicePath = AppendDevicePathNode (DevicePath, DeviceNode);
    FreePool(DevicePath);
    FreePool(DeviceNode);
    DevicePath = NewDevicePath;

    if (IsInstanceEnd) {
      DeviceNode = (EFI_DEVICE_PATH_PROTOCOL *) AllocatePool (END_DEVICE_PATH_LENGTH);
      ASSERT (DeviceNode != NULL);
      SetDevicePathEndNode (DeviceNode);
      DeviceNode->SubType = END_INSTANCE_DEVICE_PATH_SUBTYPE;

      NewDevicePath = AppendDevicePathNode (DevicePath, DeviceNode);
      FreePool(DevicePath);
      FreePool(DeviceNode);
      DevicePath = NewDevicePath;
    }
  }

  FreePool(DevicePathStr);
  return DevicePath;
}