ShellPkg: acpiview: Check if SBBR mandatory ACPI tables are installed

[mirror_edk2.git] / ShellPkg / Library / UefiShellAcpiViewCommandLib / AcpiView.c

/** @file\r
\r
  Copyright (c) 2016 - 2020, ARM Limited. All rights reserved.\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
  @par Glossary:\r
    - Sbbr or SBBR   - Server Base Boot Requirements\r
\r
  @par Reference(s):\r
    - Arm Server Base Boot Requirements 1.2, September 2019\r
**/\r
\r
#include <Library/PrintLib.h>\r
#include <Library/UefiLib.h>\r
#include <Library/ShellLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
#include "AcpiParser.h"\r
#include "AcpiTableParser.h"\r
#include "AcpiView.h"\r
#include "UefiShellAcpiViewCommandLib.h"\r
\r
#if defined(MDE_CPU_ARM) || defined (MDE_CPU_AARCH64)\r
#include "Arm/SbbrValidator.h"\r
#endif\r
\r
EFI_HII_HANDLE gShellAcpiViewHiiHandle = NULL;\r
\r
// Report variables\r
STATIC UINT32             mSelectedAcpiTable;\r
STATIC CONST CHAR16*      mSelectedAcpiTableName;\r
STATIC BOOLEAN            mSelectedAcpiTableFound;\r
STATIC EREPORT_OPTION     mReportType;\r
STATIC UINT32             mTableCount;\r
STATIC UINT32             mBinTableCount;\r
STATIC BOOLEAN            mConsistencyCheck;\r
STATIC BOOLEAN            mColourHighlighting;\r
STATIC BOOLEAN            mMandatoryTableValidate;\r
STATIC UINTN              mMandatoryTableSpec;\r
\r
/**\r
  An array of acpiview command line parameters.\r
**/\r
STATIC CONST SHELL_PARAM_ITEM ParamList[] = {\r
  {L"-q", TypeFlag},\r
  {L"-d", TypeFlag},\r
  {L"-h", TypeFlag},\r
  {L"-l", TypeFlag},\r
  {L"-s", TypeValue},\r
  {L"-r", TypeValue},\r
  {NULL, TypeMax}\r
};\r
\r
/**\r
  This function returns the colour highlighting status.\r
\r
  @retval TRUE if colour highlighting is enabled.\r
**/\r
BOOLEAN\r
GetColourHighlighting (\r
  VOID\r
  )\r
{\r
  return mColourHighlighting;\r
}\r
\r
/**\r
  This function sets the colour highlighting status.\r
\r
  @param  Highlight       The Highlight status.\r
\r
**/\r
VOID\r
SetColourHighlighting (\r
  BOOLEAN Highlight\r
  )\r
{\r
  mColourHighlighting = Highlight;\r
}\r
\r
/**\r
  This function returns the consistency checking status.\r
\r
  @retval TRUE if consistency checking is enabled.\r
**/\r
BOOLEAN\r
GetConsistencyChecking (\r
  VOID\r
  )\r
{\r
  return mConsistencyCheck;\r
}\r
\r
/**\r
  This function sets the consistency checking status.\r
\r
  @param  ConsistencyChecking   The consistency checking status.\r
\r
**/\r
VOID\r
SetConsistencyChecking (\r
  BOOLEAN ConsistencyChecking\r
  )\r
{\r
  mConsistencyCheck = ConsistencyChecking;\r
}\r
\r
/**\r
  This function returns the ACPI table requirements validation flag.\r
\r
  @retval TRUE if check for mandatory table presence should be performed.\r
**/\r
BOOLEAN\r
GetMandatoryTableValidate (\r
  VOID\r
  )\r
{\r
  return mMandatoryTableValidate;\r
}\r
\r
/**\r
  This function sets the ACPI table requirements validation flag.\r
\r
  @param  Validate    Enable/Disable ACPI table requirements validation.\r
**/\r
VOID\r
SetMandatoryTableValidate (\r
  BOOLEAN Validate\r
  )\r
{\r
  mMandatoryTableValidate = Validate;\r
}\r
\r
/**\r
  This function returns the identifier of specification to validate ACPI table\r
  requirements against.\r
\r
  @return   ID of specification listing mandatory tables.\r
**/\r
UINTN\r
GetMandatoryTableSpec (\r
  VOID\r
  )\r
{\r
  return mMandatoryTableSpec;\r
}\r
\r
/**\r
  This function sets the identifier of specification to validate ACPI table\r
  requirements against.\r
\r
  @param  Spec      ID of specification listing mandatory tables.\r
**/\r
VOID\r
SetMandatoryTableSpec (\r
  UINTN Spec\r
  )\r
{\r
  mMandatoryTableSpec = Spec;\r
}\r
\r
/**\r
  This function returns the report options.\r
\r
  @retval Returns the report option.\r
**/\r
STATIC\r
EREPORT_OPTION\r
GetReportOption (\r
  VOID\r
  )\r
{\r
  return mReportType;\r
}\r
\r
/**\r
  This function returns the selected ACPI table.\r
\r
  @retval Returns signature of the selected ACPI table.\r
**/\r
STATIC\r
UINT32\r
GetSelectedAcpiTable (\r
  VOID\r
  )\r
{\r
  return mSelectedAcpiTable;\r
}\r
\r
/**\r
  This function dumps the ACPI table to a file.\r
\r
  @param [in] Ptr       Pointer to the ACPI table data.\r
  @param [in] Length    The length of the ACPI table.\r
\r
  @retval TRUE          Success.\r
  @retval FALSE         Failure.\r
**/\r
STATIC\r
BOOLEAN\r
DumpAcpiTableToFile (\r
  IN CONST UINT8*  Ptr,\r
  IN CONST UINTN   Length\r
  )\r
{\r
  EFI_STATUS         Status;\r
  CHAR16             FileNameBuffer[MAX_FILE_NAME_LEN];\r
  SHELL_FILE_HANDLE  DumpFileHandle;\r
  UINTN              TransferBytes;\r
\r
  DumpFileHandle = NULL;\r
  TransferBytes = Length;\r
\r
  UnicodeSPrint (\r
    FileNameBuffer,\r
    sizeof (FileNameBuffer),\r
    L".\\%s%04d.bin",\r
    mSelectedAcpiTableName,\r
    mBinTableCount++\r
    );\r
\r
  Status = ShellOpenFileByName (\r
             FileNameBuffer,\r
             &DumpFileHandle,\r
             EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE | EFI_FILE_MODE_CREATE,\r
             0\r
             );\r
  if (EFI_ERROR (Status)) {\r
    ShellPrintHiiEx (\r
      -1,\r
      -1,\r
      NULL,\r
      STRING_TOKEN (STR_GEN_READONLY_MEDIA),\r
      gShellAcpiViewHiiHandle,\r
      L"acpiview"\r
      );\r
    return FALSE;\r
  }\r
\r
  Print (L"Dumping ACPI table to : %s ... ", FileNameBuffer);\r
\r
  Status = ShellWriteFile (\r
             DumpFileHandle,\r
             &TransferBytes,\r
             (VOID*)Ptr\r
             );\r
  if (EFI_ERROR (Status)) {\r
    Print (L"ERROR: Failed to dump table to binary file.\n");\r
    TransferBytes = 0;\r
  } else {\r
    Print (L"DONE.\n");\r
  }\r
\r
  ShellCloseFile (&DumpFileHandle);\r
  return (Length == TransferBytes);\r
}\r
\r
/**\r
  This function processes the table reporting options for the ACPI table.\r
\r
  @param [in] Signature The ACPI table Signature.\r
  @param [in] TablePtr  Pointer to the ACPI table data.\r
  @param [in] Length    The length fo the ACPI table.\r
\r
  @retval Returns TRUE if the ACPI table should be traced.\r
**/\r
BOOLEAN\r
ProcessTableReportOptions (\r
  IN CONST UINT32  Signature,\r
  IN CONST UINT8*  TablePtr,\r
  IN CONST UINT32  Length\r
  )\r
{\r
  UINTN   OriginalAttribute;\r
  UINT8*  SignaturePtr;\r
  BOOLEAN Log;\r
  BOOLEAN HighLight;\r
\r
  //\r
  // set local variables to suppress incorrect compiler/analyzer warnings\r
  //\r
  OriginalAttribute = 0;\r
  SignaturePtr = (UINT8*)(UINTN)&Signature;\r
  Log = FALSE;\r
  HighLight = GetColourHighlighting ();\r
\r
  switch (GetReportOption ()) {\r
    case ReportAll:\r
      Log = TRUE;\r
      break;\r
    case ReportSelected:\r
      if (Signature == GetSelectedAcpiTable ()) {\r
        Log = TRUE;\r
        mSelectedAcpiTableFound = TRUE;\r
      }\r
      break;\r
    case ReportTableList:\r
      if (mTableCount == 0) {\r
        if (HighLight) {\r
          OriginalAttribute = gST->ConOut->Mode->Attribute;\r
          gST->ConOut->SetAttribute (\r
                         gST->ConOut,\r
                         EFI_TEXT_ATTR(EFI_CYAN,\r
                           ((OriginalAttribute&(BIT4|BIT5|BIT6))>>4))\r
                         );\r
        }\r
        Print (L"\nInstalled Table(s):\n");\r
        if (HighLight) {\r
          gST->ConOut->SetAttribute (gST->ConOut, OriginalAttribute);\r
        }\r
      }\r
      Print (\r
        L"\t%4d. %c%c%c%c\n",\r
        ++mTableCount,\r
        SignaturePtr[0],\r
        SignaturePtr[1],\r
        SignaturePtr[2],\r
        SignaturePtr[3]\r
        );\r
      break;\r
    case ReportDumpBinFile:\r
      if (Signature == GetSelectedAcpiTable ()) {\r
        mSelectedAcpiTableFound = TRUE;\r
        DumpAcpiTableToFile (TablePtr, Length);\r
      }\r
      break;\r
    case ReportMax:\r
      // We should never be here.\r
      // This case is only present to prevent compiler warning.\r
      break;\r
  } // switch\r
\r
  if (Log) {\r
    if (HighLight) {\r
      OriginalAttribute = gST->ConOut->Mode->Attribute;\r
      gST->ConOut->SetAttribute (\r
                     gST->ConOut,\r
                     EFI_TEXT_ATTR(EFI_LIGHTBLUE,\r
                       ((OriginalAttribute&(BIT4|BIT5|BIT6))>>4))\r
                     );\r
    }\r
    Print (\r
      L"\n\n --------------- %c%c%c%c Table --------------- \n\n",\r
      SignaturePtr[0],\r
      SignaturePtr[1],\r
      SignaturePtr[2],\r
      SignaturePtr[3]\r
      );\r
    if (HighLight) {\r
      gST->ConOut->SetAttribute (gST->ConOut, OriginalAttribute);\r
    }\r
  }\r
\r
  return Log;\r
}\r
\r
/**\r
  This function converts a string to ACPI table signature.\r
\r
  @param [in] Str   Pointer to the string to be converted to the\r
                    ACPI table signature.\r
\r
  @retval The ACPI table signature.\r
**/\r
STATIC\r
UINT32\r
ConvertStrToAcpiSignature (\r
  IN  CONST CHAR16* Str\r
  )\r
{\r
  UINT8 Index;\r
  CHAR8 Ptr[4];\r
\r
  ZeroMem (Ptr, sizeof (Ptr));\r
  Index = 0;\r
\r
  // Convert to Upper case and convert to ASCII\r
  while ((Index < 4) && (Str[Index] != 0)) {\r
    if (Str[Index] >= L'a' && Str[Index] <= L'z') {\r
      Ptr[Index] = (CHAR8)(Str[Index] - (L'a' - L'A'));\r
    } else {\r
      Ptr[Index] = (CHAR8)Str[Index];\r
    }\r
    Index++;\r
  }\r
  return *(UINT32*)Ptr;\r
}\r
\r
/**\r
  This function iterates the configuration table entries in the\r
  system table, retrieves the RSDP pointer and starts parsing the ACPI tables.\r
\r
  @param [in] SystemTable Pointer to the EFI system table.\r
\r
  @retval Returns EFI_NOT_FOUND   if the RSDP pointer is not found.\r
          Returns EFI_UNSUPPORTED if the RSDP version is less than 2.\r
          Returns EFI_SUCCESS     if successful.\r
**/\r
STATIC\r
EFI_STATUS\r
EFIAPI\r
AcpiView (\r
  IN EFI_SYSTEM_TABLE* SystemTable\r
  )\r
{\r
  EFI_STATUS               Status;\r
  UINTN                    Index;\r
  EFI_CONFIGURATION_TABLE* EfiConfigurationTable;\r
  BOOLEAN                  FoundAcpiTable;\r
  UINTN                    OriginalAttribute;\r
  UINTN                    PrintAttribute;\r
  EREPORT_OPTION           ReportOption;\r
  UINT8*                   RsdpPtr;\r
  UINT32                   RsdpLength;\r
  UINT8                    RsdpRevision;\r
  PARSE_ACPI_TABLE_PROC    RsdpParserProc;\r
  BOOLEAN                  Trace;\r
\r
  //\r
  // set local variables to suppress incorrect compiler/analyzer warnings\r
  //\r
  EfiConfigurationTable = NULL;\r
  OriginalAttribute = 0;\r
\r
  // Search the table for an entry that matches the ACPI Table Guid\r
  FoundAcpiTable = FALSE;\r
  for (Index = 0; Index < SystemTable->NumberOfTableEntries; Index++) {\r
    if (CompareGuid (&gEfiAcpiTableGuid,\r
          &(SystemTable->ConfigurationTable[Index].VendorGuid))) {\r
      EfiConfigurationTable = &SystemTable->ConfigurationTable[Index];\r
      FoundAcpiTable = TRUE;\r
      break;\r
    }\r
  }\r
\r
  if (FoundAcpiTable) {\r
    RsdpPtr = (UINT8*)EfiConfigurationTable->VendorTable;\r
\r
    // The RSDP revision is 1 byte starting at offset 15\r
    RsdpRevision = *(RsdpPtr + RSDP_REVISION_OFFSET);\r
\r
    if (RsdpRevision < 2) {\r
      Print (\r
        L"ERROR: RSDP version less than 2 is not supported.\n"\r
        );\r
      return EFI_UNSUPPORTED;\r
    }\r
\r
#if defined(MDE_CPU_ARM) || defined (MDE_CPU_AARCH64)\r
    if (GetMandatoryTableValidate ()) {\r
      ArmSbbrResetTableCounts ();\r
    }\r
#endif\r
\r
    // The RSDP length is 4 bytes starting at offset 20\r
    RsdpLength = *(UINT32*)(RsdpPtr + RSDP_LENGTH_OFFSET);\r
\r
    Trace = ProcessTableReportOptions (RSDP_TABLE_INFO, RsdpPtr, RsdpLength);\r
\r
    Status = GetParser (RSDP_TABLE_INFO, &RsdpParserProc);\r
    if (EFI_ERROR (Status)) {\r
      Print (\r
        L"ERROR: No registered parser found for RSDP.\n"\r
        );\r
      return Status;\r
    }\r
\r
    RsdpParserProc (\r
      Trace,\r
      RsdpPtr,\r
      RsdpLength,\r
      RsdpRevision\r
      );\r
\r
  } else {\r
    IncrementErrorCount ();\r
    Print (\r
      L"ERROR: Failed to find ACPI Table Guid in System Configuration Table.\n"\r
      );\r
    return EFI_NOT_FOUND;\r
  }\r
\r
#if defined(MDE_CPU_ARM) || defined (MDE_CPU_AARCH64)\r
  if (GetMandatoryTableValidate ()) {\r
    ArmSbbrReqsValidate ((ARM_SBBR_VERSION)GetMandatoryTableSpec ());\r
  }\r
#endif\r
\r
  ReportOption = GetReportOption ();\r
  if (ReportTableList != ReportOption) {\r
    if (((ReportSelected == ReportOption)  ||\r
         (ReportDumpBinFile == ReportOption)) &&\r
        (!mSelectedAcpiTableFound)) {\r
      Print (L"\nRequested ACPI Table not found.\n");\r
    } else if (GetConsistencyChecking () &&\r
               (ReportDumpBinFile != ReportOption)) {\r
      OriginalAttribute = gST->ConOut->Mode->Attribute;\r
\r
      Print (L"\nTable Statistics:\n");\r
\r
      if (GetColourHighlighting ()) {\r
        PrintAttribute = (GetErrorCount () > 0) ?\r
                            EFI_TEXT_ATTR (\r
                              EFI_RED,\r
                              ((OriginalAttribute&(BIT4|BIT5|BIT6))>>4)\r
                              ) :\r
                            OriginalAttribute;\r
        gST->ConOut->SetAttribute (gST->ConOut, PrintAttribute);\r
      }\r
      Print (L"\t%d Error(s)\n", GetErrorCount ());\r
\r
      if (GetColourHighlighting ()) {\r
        PrintAttribute = (GetWarningCount () > 0) ?\r
                            EFI_TEXT_ATTR (\r
                              EFI_RED,\r
                              ((OriginalAttribute&(BIT4|BIT5|BIT6))>>4)\r
                              ) :\r
                            OriginalAttribute;\r
\r
        gST->ConOut->SetAttribute (gST->ConOut, PrintAttribute);\r
      }\r
      Print (L"\t%d Warning(s)\n", GetWarningCount ());\r
\r
      if (GetColourHighlighting ()) {\r
        gST->ConOut->SetAttribute (gST->ConOut, OriginalAttribute);\r
      }\r
    }\r
  }\r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  Function for 'acpiview' command.\r
\r
  @param[in] ImageHandle  Handle to the Image (NULL if Internal).\r
  @param[in] SystemTable  Pointer to the System Table (NULL if Internal).\r
**/\r
SHELL_STATUS\r
EFIAPI\r
ShellCommandRunAcpiView (\r
  IN EFI_HANDLE        ImageHandle,\r
  IN EFI_SYSTEM_TABLE* SystemTable\r
  )\r
{\r
  EFI_STATUS         Status;\r
  SHELL_STATUS       ShellStatus;\r
  LIST_ENTRY*        Package;\r
  CHAR16*            ProblemParam;\r
  SHELL_FILE_HANDLE  TmpDumpFileHandle;\r
  CONST CHAR16*      MandatoryTableSpecStr;\r
\r
  // Set Defaults\r
  mReportType = ReportAll;\r
  mTableCount = 0;\r
  mBinTableCount = 0;\r
  mSelectedAcpiTable = 0;\r
  mSelectedAcpiTableName = NULL;\r
  mSelectedAcpiTableFound = FALSE;\r
  mConsistencyCheck = TRUE;\r
  mMandatoryTableValidate = FALSE;\r
  mMandatoryTableSpec = 0;\r
\r
  ShellStatus = SHELL_SUCCESS;\r
  Package = NULL;\r
  TmpDumpFileHandle = NULL;\r
\r
  // Reset The error/warning counters\r
  ResetErrorCount ();\r
  ResetWarningCount ();\r
\r
  Status = ShellCommandLineParse (ParamList, &Package, &ProblemParam, TRUE);\r
  if (EFI_ERROR (Status)) {\r
    if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {\r
      ShellPrintHiiEx (\r
        -1,\r
        -1,\r
        NULL,\r
        STRING_TOKEN (STR_GEN_PROBLEM),\r
        gShellAcpiViewHiiHandle,\r
        L"acpiview",\r
        ProblemParam\r
        );\r
      FreePool (ProblemParam);\r
    } else {\r
      Print (L"acpiview: Error processing input parameter(s)\n");\r
    }\r
    ShellStatus = SHELL_INVALID_PARAMETER;\r
  } else {\r
    if (ShellCommandLineGetCount (Package) > 1) {\r
      ShellPrintHiiEx (\r
        -1,\r
        -1,\r
        NULL,\r
        STRING_TOKEN (STR_GEN_TOO_MANY),\r
        gShellAcpiViewHiiHandle,\r
        L"acpiview"\r
        );\r
      ShellStatus = SHELL_INVALID_PARAMETER;\r
    } else if (ShellCommandLineGetFlag (Package, L"-?")) {\r
      ShellPrintHiiEx (\r
        -1,\r
        -1,\r
        NULL,\r
        STRING_TOKEN (STR_GET_HELP_ACPIVIEW),\r
        gShellAcpiViewHiiHandle,\r
        L"acpiview"\r
        );\r
    } else if (ShellCommandLineGetFlag (Package, L"-s") &&\r
               ShellCommandLineGetValue (Package, L"-s") == NULL) {\r
      ShellPrintHiiEx (\r
        -1,\r
        -1,\r
        NULL,\r
        STRING_TOKEN (STR_GEN_NO_VALUE),\r
        gShellAcpiViewHiiHandle,\r
        L"acpiview",\r
        L"-s"\r
        );\r
      ShellStatus = SHELL_INVALID_PARAMETER;\r
    } else if (ShellCommandLineGetFlag (Package, L"-r") &&\r
               ShellCommandLineGetValue (Package, L"-r") == NULL) {\r
      ShellPrintHiiEx (\r
        -1,\r
        -1,\r
        NULL,\r
        STRING_TOKEN (STR_GEN_NO_VALUE),\r
        gShellAcpiViewHiiHandle,\r
        L"acpiview",\r
        L"-r"\r
        );\r
      ShellStatus = SHELL_INVALID_PARAMETER;\r
    } else if ((ShellCommandLineGetFlag (Package, L"-s") &&\r
                ShellCommandLineGetFlag (Package, L"-l"))) {\r
      ShellPrintHiiEx (\r
        -1,\r
        -1,\r
        NULL,\r
        STRING_TOKEN (STR_GEN_TOO_MANY),\r
        gShellAcpiViewHiiHandle,\r
        L"acpiview"\r
        );\r
      ShellStatus = SHELL_INVALID_PARAMETER;\r
    } else if (ShellCommandLineGetFlag (Package, L"-d") &&\r
               !ShellCommandLineGetFlag (Package, L"-s")) {\r
        ShellPrintHiiEx (\r
          -1,\r
          -1,\r
          NULL,\r
          STRING_TOKEN (STR_GEN_MISSING_OPTION),\r
          gShellAcpiViewHiiHandle,\r
          L"acpiview",\r
          L"-s",\r
          L"-d"\r
          );\r
        ShellStatus = SHELL_INVALID_PARAMETER;\r
    } else {\r
      // Turn on colour highlighting if requested\r
      SetColourHighlighting (ShellCommandLineGetFlag (Package, L"-h"));\r
\r
      // Surpress consistency checking if requested\r
      SetConsistencyChecking (!ShellCommandLineGetFlag (Package, L"-q"));\r
\r
      // Evaluate the parameters for mandatory ACPI table presence checks\r
      SetMandatoryTableValidate (ShellCommandLineGetFlag (Package, L"-r"));\r
      MandatoryTableSpecStr = ShellCommandLineGetValue (Package, L"-r");\r
\r
      if (MandatoryTableSpecStr != NULL) {\r
        SetMandatoryTableSpec (ShellHexStrToUintn (MandatoryTableSpecStr));\r
      }\r
\r
      if (ShellCommandLineGetFlag (Package, L"-l")) {\r
        mReportType = ReportTableList;\r
      } else {\r
        mSelectedAcpiTableName = ShellCommandLineGetValue (Package, L"-s");\r
        if (mSelectedAcpiTableName != NULL) {\r
          mSelectedAcpiTable = (UINT32)ConvertStrToAcpiSignature (\r
                                         mSelectedAcpiTableName\r
                                         );\r
          mReportType = ReportSelected;\r
\r
          if (ShellCommandLineGetFlag (Package, L"-d"))  {\r
            // Create a temporary file to check if the media is writable.\r
            CHAR16 FileNameBuffer[MAX_FILE_NAME_LEN];\r
            mReportType = ReportDumpBinFile;\r
\r
            UnicodeSPrint (\r
              FileNameBuffer,\r
              sizeof (FileNameBuffer),\r
              L".\\%s%04d.tmp",\r
              mSelectedAcpiTableName,\r
              mBinTableCount\r
              );\r
\r
            Status = ShellOpenFileByName (\r
                       FileNameBuffer,\r
                       &TmpDumpFileHandle,\r
                       EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE |\r
                       EFI_FILE_MODE_CREATE,\r
                       0\r
                       );\r
\r
            if (EFI_ERROR (Status)) {\r
              ShellStatus = SHELL_INVALID_PARAMETER;\r
              TmpDumpFileHandle = NULL;\r
              ShellPrintHiiEx (\r
                -1,\r
                -1,\r
                NULL,\r
                STRING_TOKEN (STR_GEN_READONLY_MEDIA),\r
                gShellAcpiViewHiiHandle,\r
                L"acpiview"\r
                );\r
              goto Done;\r
            }\r
            // Delete Temporary file.\r
            ShellDeleteFile (&TmpDumpFileHandle);\r
          } // -d\r
        } // -s\r
      }\r
\r
      // Parse ACPI Table information\r
      Status = AcpiView (SystemTable);\r
      if (EFI_ERROR (Status)) {\r
        ShellStatus = SHELL_NOT_FOUND;\r
      }\r
    }\r
  }\r
\r
Done:\r
  if (Package != NULL) {\r
    ShellCommandLineFreeVarList (Package);\r
  }\r
  return ShellStatus;\r
}\r