/** @file
  Tools of clarify the content of the smbios table.

  (C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>
  Copyright (c) 2005 - 2018, Intel Corporation. All rights reserved.<BR>
  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#include "UefiShellDebug1CommandsLib.h"
#include "LibSmbiosView.h"
#include "SmbiosView.h"
#include "PrintInfo.h"
#include "QueryTable.h"

UINT8                       gShowType         = SHOW_DETAIL;
STATIC STRUCTURE_STATISTICS *mStatisticsTable = NULL;
STATIC STRUCTURE_STATISTICS *mSmbios64BitStatisticsTable = NULL;

UINT8  SmbiosMajorVersion;
UINT8  SmbiosMinorVersion;

UINTN  mNumberOfSmbios64BitStructures;
UINTN  mSmbios64BitTableLength;

STATIC CONST SHELL_PARAM_ITEM ParamList[] = {
  {L"-t", TypeValue},
  {L"-h", TypeValue},
  {L"-s", TypeFlag},
  {L"-a", TypeFlag},
  {NULL, TypeMax}
  };

/**
  Function for 'smbiosview' command.

  @param[in] ImageHandle  Handle to the Image (NULL if Internal).
  @param[in] SystemTable  Pointer to the System Table (NULL if Internal).
**/
SHELL_STATUS
EFIAPI
ShellCommandRunSmbiosView (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  )
{
  UINT8               StructType;
  UINT16              StructHandle;
  EFI_STATUS          Status;
  EFI_STATUS          Status1;
  EFI_STATUS          Status2;
  BOOLEAN             RandomView;
  LIST_ENTRY          *Package;
  CHAR16              *ProblemParam;
  SHELL_STATUS        ShellStatus;
  CONST CHAR16        *Temp;

  mStatisticsTable            = NULL;
  mSmbios64BitStatisticsTable = NULL;
  Package                     = NULL;
  ShellStatus                 = SHELL_SUCCESS;

  Status = ShellCommandLineParse (ParamList, &Package, &ProblemParam, TRUE);
  if (EFI_ERROR(Status)) {
    if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {
      ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellDebug1HiiHandle, L"smbiosview", ProblemParam);
      FreePool(ProblemParam);
      ShellStatus = SHELL_INVALID_PARAMETER;
    } else {
      ASSERT(FALSE);
    }
  } else {
    if (ShellCommandLineGetCount(Package) > 1) {
      ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_MANY), gShellDebug1HiiHandle, L"smbiosview");
      ShellStatus = SHELL_INVALID_PARAMETER;
    } else if (ShellCommandLineGetFlag(Package, L"-t") && ShellCommandLineGetValue(Package, L"-t") == NULL) {
      ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_NO_VALUE), gShellDebug1HiiHandle, L"smbiosview", L"-t");
      ShellStatus = SHELL_INVALID_PARAMETER;
    } else if (ShellCommandLineGetFlag(Package, L"-h") && ShellCommandLineGetValue(Package, L"-h") == NULL) {
      ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_NO_VALUE), gShellDebug1HiiHandle,  L"smbiosview", L"-h");
      ShellStatus = SHELL_INVALID_PARAMETER;
    } else if (
        (ShellCommandLineGetFlag(Package, L"-t") && ShellCommandLineGetFlag(Package, L"-h")) ||
        (ShellCommandLineGetFlag(Package, L"-t") && ShellCommandLineGetFlag(Package, L"-s")) ||
        (ShellCommandLineGetFlag(Package, L"-t") && ShellCommandLineGetFlag(Package, L"-a")) ||
        (ShellCommandLineGetFlag(Package, L"-h") && ShellCommandLineGetFlag(Package, L"-s")) ||
        (ShellCommandLineGetFlag(Package, L"-h") && ShellCommandLineGetFlag(Package, L"-a")) ||
        (ShellCommandLineGetFlag(Package, L"-s") && ShellCommandLineGetFlag(Package, L"-a"))
      ) {
      ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_MANY), gShellDebug1HiiHandle, L"smbiosview");
      ShellStatus = SHELL_INVALID_PARAMETER;
    } else {

      //
      // Init Lib
      //
      Status1 = LibSmbiosInit ();
      Status2 = LibSmbios64BitInit ();
      if (EFI_ERROR (Status1) && EFI_ERROR (Status2)) {
        ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_LIBSMBIOSVIEW_CANNOT_GET_TABLE), gShellDebug1HiiHandle);
        ShellStatus = SHELL_NOT_FOUND;
        goto Done;
      }

      StructType    = STRUCTURE_TYPE_RANDOM;
      RandomView    = TRUE;

      Temp          = ShellCommandLineGetValue(Package, L"-t");
      if (Temp != NULL) {
        StructType = (UINT8) ShellStrToUintn (Temp);
      }

      if (ShellCommandLineGetFlag(Package, L"-a")) {
        gShowType = SHOW_ALL;
      }

      if (!EFI_ERROR (Status1)) {
        //
        // Initialize the StructHandle to be the first handle
        //
        StructHandle  = INVALID_HANDLE;
        LibGetSmbiosStructure (&StructHandle, NULL, NULL);

        Temp = ShellCommandLineGetValue(Package, L"-h");
        if (Temp != NULL) {
          RandomView   = FALSE;
          StructHandle = (UINT16) ShellStrToUintn(Temp);
        }
        //
        // build statistics table
        //
        Status = InitSmbiosTableStatistics ();
        if (EFI_ERROR (Status)) {
          ShellStatus = SHELL_NOT_FOUND;
          goto Done;
        }

        if (ShellCommandLineGetFlag(Package, L"-s")) {
          Status = DisplayStatisticsTable (SHOW_DETAIL);
          if (EFI_ERROR(Status)) {
            ShellStatus = SHELL_NOT_FOUND;
          }
          goto Show64Bit;
        }

        //
        // Show SMBIOS structure information
        //
        Status = SMBiosView (StructType, StructHandle, gShowType, RandomView);
        if (EFI_ERROR(Status)) {
          ShellStatus = SHELL_NOT_FOUND;
          goto Done;
        }
      }

Show64Bit:
      if (!EFI_ERROR (Status2)) {
        //
        // build statistics table
        //
        Status = InitSmbios64BitTableStatistics ();
        if (EFI_ERROR (Status)) {
          ShellStatus = SHELL_NOT_FOUND;
          goto Done;
        }
        //
        // Initialize the StructHandle to be the first handle
        //
        StructHandle  = INVALID_HANDLE;
        LibGetSmbios64BitStructure (&StructHandle, NULL, NULL);

        Temp = ShellCommandLineGetValue(Package, L"-h");
        if (Temp != NULL) {
          RandomView   = FALSE;
          StructHandle = (UINT16) ShellStrToUintn(Temp);
        }

        if (ShellCommandLineGetFlag(Package, L"-s")) {
          Status = DisplaySmbios64BitStatisticsTable (SHOW_DETAIL);
          if (EFI_ERROR(Status)) {
            ShellStatus = SHELL_NOT_FOUND;
          }
          goto Done;
        }

        //
        // Show SMBIOS structure information
        //
        Status = SMBios64View (StructType, StructHandle, gShowType, RandomView);
        if (EFI_ERROR(Status)) {
          ShellStatus = SHELL_NOT_FOUND;
        }
      }
    }
  }
Done:
  //
  // Release resources
  //
  if (mStatisticsTable != NULL) {
    //
    // Release statistics table
    //
    FreePool (mStatisticsTable);
    mStatisticsTable = NULL;
  }

  if (mSmbios64BitStatisticsTable != NULL) {
    //
    // Release statistics table
    //
    FreePool (mSmbios64BitStatisticsTable);
    mSmbios64BitStatisticsTable = NULL;
  }

  if (Package != NULL) {
    ShellCommandLineFreeVarList (Package);
  }

  LibSmbiosCleanup ();
  LibSmbios64BitCleanup ();

  return ShellStatus;
}

/**
  Query all structures Data from SMBIOS table and Display
  the information to users as required display option.

  @param[in] QueryType      Structure type to view.
  @param[in] QueryHandle    Structure handle to view.
  @param[in] Option         Display option: none,outline,normal,detail.
  @param[in] RandomView     Support for -h parameter.

  @retval EFI_SUCCESS           print is successful.
  @retval EFI_BAD_BUFFER_SIZE   structure is out of the range of SMBIOS table.
**/
EFI_STATUS
SMBiosView (
  IN  UINT8   QueryType,
  IN  UINT16  QueryHandle,
  IN  UINT8   Option,
  IN  BOOLEAN RandomView
  )
{
  UINT16                    Handle;
  UINT8                     *Buffer;
  UINT16                    Length;
  UINTN                     Index;

  SMBIOS_STRUCTURE_POINTER  SmbiosStruct;
  SMBIOS_TABLE_ENTRY_POINT  *SMBiosTable;

  SMBiosTable = NULL;
  LibSmbiosGetEPS (&SMBiosTable);
  if (SMBiosTable == NULL) {
    ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_CANNOT_ACCESS_TABLE), gShellDebug1HiiHandle);
    return EFI_BAD_BUFFER_SIZE;
  }

  if (CompareMem (SMBiosTable->AnchorString, "_SM_", 4) == 0) {
    //
    // Have got SMBIOS table
    //
    SmbiosPrintEPSInfo (SMBiosTable, Option);

    SmbiosMajorVersion = SMBiosTable->MajorVersion;
    SmbiosMinorVersion = SMBiosTable->MinorVersion;

    ShellPrintEx(-1,-1,L"=========================================================\n");
    ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_QUERY_STRUCT_COND), gShellDebug1HiiHandle);

    if (QueryType == STRUCTURE_TYPE_RANDOM) {
      ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_QUERYTYPE_RANDOM), gShellDebug1HiiHandle);
    } else {
      ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_QUERYTYPE), gShellDebug1HiiHandle, QueryType);
    }

    if (RandomView) {
      ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_QUERYHANDLE_RANDOM), gShellDebug1HiiHandle);
    } else {
      ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_QUERYHANDLE), gShellDebug1HiiHandle, QueryHandle);
    }

    ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_SHOWTYPE), gShellDebug1HiiHandle);
    ShellPrintEx(-1,-1,GetShowTypeString (gShowType));
    ShellPrintEx(-1,-1,L"\n\n");

/*
    //
    // Get internal commands, such as change options.
    //
    Status = WaitEnter ();
    if (EFI_ERROR (Status)) {
      if (Status == EFI_ABORTED) {
        return EFI_SUCCESS;
      }

      return Status;
    }
*/

    //
    // Searching and display structure info
    //
    Handle    = QueryHandle;
    for (Index = 0; Index < SMBiosTable->NumberOfSmbiosStructures; Index++) {
      //
      // if reach the end of table, break..
      //
      if (Handle == INVALID_HANDLE) {
        break;
      }
      //
      // handle then point to the next!
      //
      if (LibGetSmbiosStructure (&Handle, &Buffer, &Length) != DMI_SUCCESS) {
        break;
      }

      SmbiosStruct.Raw = Buffer;

      //
      // if QueryType==Random, print this structure.
      // if QueryType!=Random, but Hdr->Type==QueryType, also print it.
      // only if QueryType != Random and Hdr->Type != QueryType, skiped it.
      //
      if (QueryType != STRUCTURE_TYPE_RANDOM && SmbiosStruct.Hdr->Type != QueryType) {
        continue;
      }

      ShellPrintEx(-1,-1,L"\n=========================================================\n");
      ShellPrintHiiEx(-1,-1,NULL,
        STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_TYPE_HANDLE_DUMP_STRUCT),
        gShellDebug1HiiHandle,
        SmbiosStruct.Hdr->Type,
        SmbiosStruct.Hdr->Handle
       );
      ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_INDEX_LENGTH), gShellDebug1HiiHandle, Index, Length);
      //
      // Addr of structure in structure in table
      //
      ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_ADDR), gShellDebug1HiiHandle, (UINTN) Buffer);
      DumpHex (0, 0, Length, Buffer);

/*
      //
      // Get internal commands, such as change options.
      //
      Status = WaitEnter ();
      if (EFI_ERROR (Status)) {
        if (Status == EFI_ABORTED) {
          return EFI_SUCCESS;
        }

        return Status;
      }
*/

      if (gShowType != SHOW_NONE) {
        //
        // Print structure information
        //
        SmbiosPrintStructure (&SmbiosStruct, gShowType);
        ShellPrintEx(-1,-1,L"\n");

/*
        //
        // Get internal commands, such as change options.
        //
        Status = WaitEnter ();
        if (EFI_ERROR (Status)) {
          if (Status == EFI_ABORTED) {
            return EFI_SUCCESS;
          }

          return Status;
        }
*/
      }
      if (!RandomView) {
        break;
      }
      //
      // Support Execution Interrupt.
      //
      if (ShellGetExecutionBreakFlag ()) {
        return EFI_ABORTED;
      }
    }

    ShellPrintEx(-1,-1,L"\n=========================================================\n");
    return EFI_SUCCESS;
  }

  return EFI_BAD_BUFFER_SIZE;
}

/**
  Query all structures Data from SMBIOS table and Display
  the information to users as required display option.

  @param[in] QueryType      Structure type to view.
  @param[in] QueryHandle    Structure handle to view.
  @param[in] Option         Display option: none,outline,normal,detail.
  @param[in] RandomView     Support for -h parameter.

  @retval EFI_SUCCESS           print is successful.
  @retval EFI_BAD_BUFFER_SIZE   structure is out of the range of SMBIOS table.
**/
EFI_STATUS
SMBios64View (
  IN  UINT8   QueryType,
  IN  UINT16  QueryHandle,
  IN  UINT8   Option,
  IN  BOOLEAN RandomView
  )
{
  UINT16                        Handle;
  UINT8                         *Buffer;
  UINT16                        Length;
  UINTN                         Index;
  SMBIOS_STRUCTURE_POINTER      SmbiosStruct;
  SMBIOS_TABLE_3_0_ENTRY_POINT  *SMBiosTable;

  SMBiosTable = NULL;
  LibSmbios64BitGetEPS (&SMBiosTable);
  if (SMBiosTable == NULL) {
    ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_CANNOT_ACCESS_TABLE), gShellDebug1HiiHandle);
    return EFI_BAD_BUFFER_SIZE;
  }

  if (CompareMem (SMBiosTable->AnchorString, "_SM3_", 5) == 0) {
    //
    // Have got SMBIOS table
    //
    Smbios64BitPrintEPSInfo (SMBiosTable, Option);

    SmbiosMajorVersion = SMBiosTable->MajorVersion;
    SmbiosMinorVersion = SMBiosTable->MinorVersion;

    ShellPrintEx(-1,-1,L"=========================================================\n");
    ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_QUERY_STRUCT_COND), gShellDebug1HiiHandle);

    if (QueryType == STRUCTURE_TYPE_RANDOM) {
      ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_QUERYTYPE_RANDOM), gShellDebug1HiiHandle);
    } else {
      ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_QUERYTYPE), gShellDebug1HiiHandle, QueryType);
    }

    if (RandomView) {
      ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_QUERYHANDLE_RANDOM), gShellDebug1HiiHandle);
    } else {
      ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_QUERYHANDLE), gShellDebug1HiiHandle, QueryHandle);
    }

    ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_SHOWTYPE), gShellDebug1HiiHandle);
    ShellPrintEx(-1,-1,GetShowTypeString (gShowType));
    ShellPrintEx(-1,-1,L"\n\n");

/*
    //
    // Get internal commands, such as change options.
    //
    Status = WaitEnter ();
    if (EFI_ERROR (Status)) {
      if (Status == EFI_ABORTED) {
        return EFI_SUCCESS;
      }

      return Status;
    }
*/

    //
    // Searching and display structure info
    //
    Handle    = QueryHandle;
    for (Index = 0; Index < mNumberOfSmbios64BitStructures; Index++) {
      //
      // if reach the end of table, break..
      //
      if (Handle == INVALID_HANDLE) {
        break;
      }
      //
      // handle then point to the next!
      //
      if (LibGetSmbios64BitStructure (&Handle, &Buffer, &Length) != DMI_SUCCESS) {
        break;
      }

      SmbiosStruct.Raw = Buffer;

      //
      // if QueryType==Random, print this structure.
      // if QueryType!=Random, but Hdr->Type==QueryType, also print it.
      // only if QueryType != Random and Hdr->Type != QueryType, skiped it.
      //
      if (QueryType != STRUCTURE_TYPE_RANDOM && SmbiosStruct.Hdr->Type != QueryType) {
        continue;
      }

      ShellPrintEx(-1,-1,L"\n=========================================================\n");
      ShellPrintHiiEx(-1,-1,NULL,
        STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_TYPE_HANDLE_DUMP_STRUCT),
        gShellDebug1HiiHandle,
        SmbiosStruct.Hdr->Type,
        SmbiosStruct.Hdr->Handle
       );
      ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_INDEX_LENGTH), gShellDebug1HiiHandle, Index, Length);
      //
      // Addr of structure in structure in table
      //
      ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_ADDR), gShellDebug1HiiHandle, (UINTN) Buffer);
      DumpHex (0, 0, Length, Buffer);

/*
      //
      // Get internal commands, such as change options.
      //
      Status = WaitEnter ();
      if (EFI_ERROR (Status)) {
        if (Status == EFI_ABORTED) {
          return EFI_SUCCESS;
        }

        return Status;
      }
*/

      if (gShowType != SHOW_NONE) {
        //
        // Print structure information
        //
        SmbiosPrintStructure (&SmbiosStruct, gShowType);
        ShellPrintEx(-1,-1,L"\n");

/*
        //
        // Get internal commands, such as change options.
        //
        Status = WaitEnter ();
        if (EFI_ERROR (Status)) {
          if (Status == EFI_ABORTED) {
            return EFI_SUCCESS;
          }

          return Status;
        }
*/
      }
      if (!RandomView) {
        break;
      }
      //
      // Support Execution Interrupt.
      //
      if (ShellGetExecutionBreakFlag ()) {
        return EFI_ABORTED;
      }
    }

    ShellPrintEx(-1,-1,L"\n=========================================================\n");
    return EFI_SUCCESS;
  }

  return EFI_BAD_BUFFER_SIZE;
}

/**
  Function to initialize the global mStatisticsTable object.

  @retval EFI_SUCCESS           print is successful.
**/
EFI_STATUS
InitSmbiosTableStatistics (
  VOID
  )
{
  UINT16                    Handle;
  UINT8                     *Buffer;
  UINT16                    Length;
  UINT16                    Offset;
  UINT16                    Index;

  SMBIOS_STRUCTURE_POINTER  SmbiosStruct;
  SMBIOS_TABLE_ENTRY_POINT  *SMBiosTable;
  STRUCTURE_STATISTICS      *StatisticsPointer;

  SMBiosTable = NULL;
  LibSmbiosGetEPS (&SMBiosTable);
  if (SMBiosTable == NULL) {
    ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_CANNOT_ACCESS_TABLE), gShellDebug1HiiHandle);
    return EFI_NOT_FOUND;
  }

  if (CompareMem (SMBiosTable->AnchorString, "_SM_", 4) != 0) {
    ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_SMBIOS_TABLE), gShellDebug1HiiHandle);
    return EFI_INVALID_PARAMETER;
  }
  //
  // Allocate memory to mStatisticsTable
  //
  if (mStatisticsTable != NULL) {
    FreePool (mStatisticsTable);
    mStatisticsTable = NULL;
  }

  mStatisticsTable = (STRUCTURE_STATISTICS *) AllocateZeroPool (SMBiosTable->NumberOfSmbiosStructures * sizeof (STRUCTURE_STATISTICS));

  if (mStatisticsTable == NULL) {
    ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_OUT_OF_MEM), gShellDebug1HiiHandle);
    return EFI_OUT_OF_RESOURCES;
  }

  Offset      = 0;
  StatisticsPointer = mStatisticsTable;

  //
  // search from the first one
  //
  Handle = INVALID_HANDLE;
  LibGetSmbiosStructure (&Handle, NULL, NULL);
  for (Index = 1; Index <= SMBiosTable->NumberOfSmbiosStructures; Index++) {
    //
    // If reach the end of table, break..
    //
    if (Handle == INVALID_HANDLE) {
      break;
    }
    //
    // After LibGetSmbiosStructure(), handle then point to the next!
    //
    if (LibGetSmbiosStructure (&Handle, &Buffer, &Length) != DMI_SUCCESS) {
      break;
    }

    SmbiosStruct.Raw = Buffer;

    //
    // general statistics
    //
    StatisticsPointer->Index  = Index;
    StatisticsPointer->Type   = SmbiosStruct.Hdr->Type;
    StatisticsPointer->Handle = SmbiosStruct.Hdr->Handle;
    StatisticsPointer->Length = Length;
    StatisticsPointer->Addr   = Offset;

    Offset = (UINT16) (Offset + Length);

    StatisticsPointer         = &mStatisticsTable[Index];
  }

  return EFI_SUCCESS;
}

/**
  @param[in]  Smbios64EntryPoint          SMBIOS 64-bit entry point.
  @param[out] NumberOfSmbios64Structures  The number of structures in 64-bit SMBIOS table.
  @param[out] Smbios64TableLength         The total length of 64-bit SMBIOS table.

  @retval EFI_SUCCESS                     Calculation was successful.
**/
EFI_STATUS
CalculateSmbios64BitStructureCountAndLength (
  SMBIOS_TABLE_3_0_ENTRY_POINT    *Smbios64EntryPoint,
  UINTN                           *NumberOfSmbios64Structures,
  UINTN                           *Smbios64TableLength
)
{
  SMBIOS_STRUCTURE_POINTER        Smbios;
  UINT8                           *Raw;

  *Smbios64TableLength = 0;
  *NumberOfSmbios64Structures = 0;

  Smbios.Raw = (UINT8 *)(UINTN)(Smbios64EntryPoint->TableAddress);
  while (TRUE) {
    if (Smbios.Hdr->Type == 127) {
      //
      // Reach the end of table type 127
      //
      (*NumberOfSmbios64Structures)++;
      (*Smbios64TableLength) += sizeof (SMBIOS_STRUCTURE);
      return EFI_SUCCESS;
    }

    Raw = Smbios.Raw;
    //
    // Walk to next structure
    //
    LibGetSmbiosString (&Smbios, (UINT16) (-1));
    //
    // Length = Next structure head - this structure head
    //
    (*Smbios64TableLength) += ((UINTN) Smbios.Raw - (UINTN) Raw);
    if ((*Smbios64TableLength) > Smbios64EntryPoint->TableMaximumSize) {
      //
      // The actual table length exceeds maximum table size,
      // There should be something wrong with SMBIOS table.
      //
      return EFI_INVALID_PARAMETER;
    }
    (*NumberOfSmbios64Structures)++;
  }
}

/**
  Function to initialize the global mSmbios64BitStatisticsTable object.

  @retval EFI_SUCCESS           print is successful.
**/
EFI_STATUS
InitSmbios64BitTableStatistics (
  VOID
  )
{
  UINT16                    Handle;
  UINT8                     *Buffer;
  UINT16                    Length;
  UINT16                    Offset;
  UINT16                    Index;
  EFI_STATUS                Status;
  SMBIOS_STRUCTURE_POINTER      SmbiosStruct;
  SMBIOS_TABLE_3_0_ENTRY_POINT  *SMBiosTable;
  STRUCTURE_STATISTICS          *StatisticsPointer;

  SMBiosTable = NULL;
  LibSmbios64BitGetEPS (&SMBiosTable);
  if (SMBiosTable == NULL) {
    ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_CANNOT_ACCESS_TABLE), gShellDebug1HiiHandle);
    return EFI_NOT_FOUND;
  }

  if (CompareMem (SMBiosTable->AnchorString, "_SM3_", 5) != 0) {
    ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_SMBIOS_TABLE), gShellDebug1HiiHandle);
    return EFI_INVALID_PARAMETER;
  }
  //
  // Allocate memory to mSmbios64BitStatisticsTable
  //
  if (mSmbios64BitStatisticsTable != NULL) {
    FreePool (mSmbios64BitStatisticsTable);
    mSmbios64BitStatisticsTable = NULL;
  }
  //
  // Calculate number of smbios structures
  //
  Status = CalculateSmbios64BitStructureCountAndLength (SMBiosTable, &mNumberOfSmbios64BitStructures, &mSmbios64BitTableLength);
  if ((EFI_ERROR (Status)) || (mSmbios64BitTableLength > SMBiosTable->TableMaximumSize)) {
    return EFI_INVALID_PARAMETER;
  }

  mSmbios64BitStatisticsTable = (STRUCTURE_STATISTICS *) AllocateZeroPool (mNumberOfSmbios64BitStructures * sizeof (STRUCTURE_STATISTICS));

  if (mSmbios64BitStatisticsTable == NULL) {
    ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_OUT_OF_MEM), gShellDebug1HiiHandle);
    return EFI_OUT_OF_RESOURCES;
  }

  Offset      = 0;
  StatisticsPointer = mSmbios64BitStatisticsTable;

  //
  // search from the first one
  //
  Handle = INVALID_HANDLE;
  LibGetSmbios64BitStructure (&Handle, NULL, NULL);
  for (Index = 1; Index <= mNumberOfSmbios64BitStructures; Index++) {
    //
    // If reach the end of table, break..
    //
    if (Handle == INVALID_HANDLE) {
      break;
    }
    //
    // After LibGetSmbios64BitStructure(), handle then point to the next!
    //
    if (LibGetSmbios64BitStructure (&Handle, &Buffer, &Length) != DMI_SUCCESS) {
      break;
    }

    SmbiosStruct.Raw = Buffer;

    //
    // general statistics
    //
    StatisticsPointer->Index  = Index;
    StatisticsPointer->Type   = SmbiosStruct.Hdr->Type;
    StatisticsPointer->Handle = SmbiosStruct.Hdr->Handle;
    StatisticsPointer->Length = Length;
    StatisticsPointer->Addr   = Offset;

    Offset = (UINT16) (Offset + Length);

    StatisticsPointer         = &mSmbios64BitStatisticsTable[Index];
  }

  return EFI_SUCCESS;
}

/**
  Function to display the global mStatisticsTable object.

  @param[in] Option             ECHO, NORMAL, or DETAIL control the amount of detail displayed.

  @retval EFI_SUCCESS           print is successful.
**/
EFI_STATUS
DisplayStatisticsTable (
  IN   UINT8   Option
  )
{
  UINTN                    Index;
  UINTN                    Num;
  STRUCTURE_STATISTICS     *StatisticsPointer;
  SMBIOS_TABLE_ENTRY_POINT *SMBiosTable;

  SMBiosTable = NULL;
  if (Option < SHOW_OUTLINE) {
    return EFI_SUCCESS;
  }
  //
  // display EPS information firstly
  //
  LibSmbiosGetEPS (&SMBiosTable);
  if (SMBiosTable == NULL) {
    ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_CANNOT_ACCESS_TABLE), gShellDebug1HiiHandle);
    return EFI_UNSUPPORTED;
  }

  ShellPrintEx(-1,-1,L"\n============================================================\n");
  SmbiosPrintEPSInfo (SMBiosTable, Option);

  if (Option < SHOW_NORMAL) {
    return EFI_SUCCESS;
  }

  if (mStatisticsTable == NULL) {
    ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_CANNOT_ACCESS_STATS), gShellDebug1HiiHandle);
    return EFI_NOT_FOUND;
  }

  ShellPrintEx(-1,-1,L"============================================================\n");
  StatisticsPointer = &mStatisticsTable[0];
  Num         = SMBiosTable->NumberOfSmbiosStructures;
  //
  // display statistics table content
  //
  for (Index = 1; Index <= Num; Index++) {
    ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_INDEX), gShellDebug1HiiHandle, StatisticsPointer->Index);
    ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_TYPE), gShellDebug1HiiHandle, StatisticsPointer->Type);
    ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_HANDLE), gShellDebug1HiiHandle, StatisticsPointer->Handle);
    if (Option >= SHOW_DETAIL) {
      ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_OFFSET), gShellDebug1HiiHandle, StatisticsPointer->Addr);
      ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_LENGTH), gShellDebug1HiiHandle, StatisticsPointer->Length);
    }

    ShellPrintEx(-1,-1,L"\n");
    StatisticsPointer = &mStatisticsTable[Index];
/*
    //
    // Display 20 lines and wait for a page break
    //
    if (Index % 20 == 0) {
      ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_ENTER_CONTINUE), gShellDebug1HiiHandle);
      Status = WaitEnter ();
      if (EFI_ERROR (Status)) {
        if (Status == EFI_ABORTED) {
          return EFI_SUCCESS;
        }

        return Status;
      }
    }
*/
  }

  return EFI_SUCCESS;
}

/**
  Function to display the global mSmbios64BitStatisticsTable object.

  @param[in] Option             ECHO, NORMAL, or DETAIL control the amount of detail displayed.

  @retval EFI_SUCCESS           print is successful.
**/
EFI_STATUS
DisplaySmbios64BitStatisticsTable (
  IN   UINT8   Option
  )
{
  UINTN                    Index;
  UINTN                    Num;
  STRUCTURE_STATISTICS     *StatisticsPointer;
  SMBIOS_TABLE_3_0_ENTRY_POINT *SMBiosTable;

  SMBiosTable = NULL;
  if (Option < SHOW_OUTLINE) {
    return EFI_SUCCESS;
  }
  //
  // display EPS information firstly
  //
  LibSmbios64BitGetEPS (&SMBiosTable);
  if (SMBiosTable == NULL) {
    ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_CANNOT_ACCESS_TABLE), gShellDebug1HiiHandle);
    return EFI_UNSUPPORTED;
  }

  ShellPrintEx(-1,-1,L"\n============================================================\n");
  Smbios64BitPrintEPSInfo (SMBiosTable, Option);

  if (Option < SHOW_NORMAL) {
    return EFI_SUCCESS;
  }

  if (mSmbios64BitStatisticsTable == NULL) {
    ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_CANNOT_ACCESS_STATS), gShellDebug1HiiHandle);
    return EFI_NOT_FOUND;
  }

  ShellPrintEx(-1,-1,L"============================================================\n");
  StatisticsPointer = &mSmbios64BitStatisticsTable[0];
  Num         = mNumberOfSmbios64BitStructures;
  //
  // display statistics table content
  //
  for (Index = 1; Index <= Num; Index++) {
    ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_INDEX), gShellDebug1HiiHandle, StatisticsPointer->Index);
    ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_TYPE), gShellDebug1HiiHandle, StatisticsPointer->Type);
    ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_HANDLE), gShellDebug1HiiHandle, StatisticsPointer->Handle);
    if (Option >= SHOW_DETAIL) {
      ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_OFFSET), gShellDebug1HiiHandle, StatisticsPointer->Addr);
      ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_LENGTH), gShellDebug1HiiHandle, StatisticsPointer->Length);
    }

    ShellPrintEx(-1,-1,L"\n");
    StatisticsPointer = &mSmbios64BitStatisticsTable[Index];
/*
    //
    // Display 20 lines and wait for a page break
    //
    if (Index % 20 == 0) {
      ShellPrintHiiEx(-1,-1,NULL,STRING_TOKEN (STR_SMBIOSVIEW_SMBIOSVIEW_ENTER_CONTINUE), gShellDebug1HiiHandle);
      Status = WaitEnter ();
      if (EFI_ERROR (Status)) {
        if (Status == EFI_ABORTED) {
          return EFI_SUCCESS;
        }

        return Status;
      }
    }
*/
  }

  return EFI_SUCCESS;
}

/**
  function to return a string of the detail level.

  @param[in] ShowType         The detail level whose name is desired in clear text.

  @return   A pointer to a string representing the ShowType (or 'undefined type' if not known).
**/
CHAR16 *
GetShowTypeString (
  UINT8 ShowType
  )
{
  //
  // show type
  //
  switch (ShowType) {

  case SHOW_NONE:
    return L"SHOW_NONE";

  case SHOW_OUTLINE:
    return L"SHOW_OUTLINE";

  case SHOW_NORMAL:
    return L"SHOW_NORMAL";

  case SHOW_DETAIL:
    return L"SHOW_DETAIL";

  case SHOW_ALL:
    return L"SHOW_ALL";

  default:
    return L"Undefined type";
  }
}