SmiHandlerProfileInfo.c

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#include <PiDxe.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/DebugLib.h>
#include <Library/PrintLib.h>
#include <Library/UefiLib.h>
#include <Library/DevicePathLib.h>
#include <Library/DxeServicesLib.h>
#include <Protocol/SmmCommunication.h>
#include <Guid/PiSmmCommunicationRegionTable.h>
 
#include <Guid/SmiHandlerProfile.h>
 
#define PROFILE_NAME_STRING_LENGTH  64
CHAR8  mNameString[PROFILE_NAME_STRING_LENGTH + 1];
 
VOID   *mSmiHandlerProfileDatabase;
UINTN  mSmiHandlerProfileDatabaseSize;
 
VOID
InternalDumpData (
  IN UINT8  *Data,
  IN UINTN  Size
  )
{
  UINTN  Index;
 
  for (Index = 0; Index < Size; Index++) {
    Print (L"%02x", (UINTN)Data[Index]);
    if ((Index + 1) != Size) {
      Print (L" ");
    }
  }
}
 
VOID
GetSmiHandlerProfileDatabase (
  VOID
  )
{
  EFI_STATUS                                        Status;
  UINTN                                             CommSize;
  UINT8                                             *CommBuffer;
  EFI_SMM_COMMUNICATE_HEADER                        *CommHeader;
  SMI_HANDLER_PROFILE_PARAMETER_GET_INFO            *CommGetInfo;
  SMI_HANDLER_PROFILE_PARAMETER_GET_DATA_BY_OFFSET  *CommGetData;
  EFI_SMM_COMMUNICATION_PROTOCOL                    *SmmCommunication;
  UINTN                                             MinimalSizeNeeded;
  EDKII_PI_SMM_COMMUNICATION_REGION_TABLE           *PiSmmCommunicationRegionTable;
  UINT32                                            Index;
  EFI_MEMORY_DESCRIPTOR                             *Entry;
  VOID                                              *Buffer;
  UINTN                                             Size;
  UINTN                                             Offset;
 
  Status = gBS->LocateProtocol (&gEfiSmmCommunicationProtocolGuid, NULL, (VOID **)&SmmCommunication);
  if (EFI_ERROR (Status)) {
    Print (L"SmiHandlerProfile: Locate SmmCommunication protocol - %r\n", Status);
    return;
  }
 
  MinimalSizeNeeded = EFI_PAGE_SIZE;
 
  Status = EfiGetSystemConfigurationTable (
             &gEdkiiPiSmmCommunicationRegionTableGuid,
             (VOID **)&PiSmmCommunicationRegionTable
             );
  if (EFI_ERROR (Status)) {
    Print (L"SmiHandlerProfile: Get PiSmmCommunicationRegionTable - %r\n", Status);
    return;
  }
 
  ASSERT (PiSmmCommunicationRegionTable != NULL);
  Entry = (EFI_MEMORY_DESCRIPTOR *)(PiSmmCommunicationRegionTable + 1);
  Size  = 0;
  for (Index = 0; Index < PiSmmCommunicationRegionTable->NumberOfEntries; Index++) {
    if (Entry->Type == EfiConventionalMemory) {
      Size = EFI_PAGES_TO_SIZE ((UINTN)Entry->NumberOfPages);
      if (Size >= MinimalSizeNeeded) {
        break;
      }
    }
 
    Entry = (EFI_MEMORY_DESCRIPTOR *)((UINT8 *)Entry + PiSmmCommunicationRegionTable->DescriptorSize);
  }
 
  ASSERT (Index < PiSmmCommunicationRegionTable->NumberOfEntries);
  CommBuffer = (UINT8 *)(UINTN)Entry->PhysicalStart;
 
  //
  // Get Size
  //
  CommHeader = (EFI_SMM_COMMUNICATE_HEADER *)&CommBuffer[0];
  CopyMem (&CommHeader->HeaderGuid, &gSmiHandlerProfileGuid, sizeof (gSmiHandlerProfileGuid));
  CommHeader->MessageLength = sizeof (SMI_HANDLER_PROFILE_PARAMETER_GET_INFO);
 
  CommGetInfo                      = (SMI_HANDLER_PROFILE_PARAMETER_GET_INFO *)&CommBuffer[OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data)];
  CommGetInfo->Header.Command      = SMI_HANDLER_PROFILE_COMMAND_GET_INFO;
  CommGetInfo->Header.DataLength   = sizeof (*CommGetInfo);
  CommGetInfo->Header.ReturnStatus = (UINT64)-1;
  CommGetInfo->DataSize            = 0;
 
  CommSize = sizeof (EFI_GUID) + sizeof (UINTN) + CommHeader->MessageLength;
  Status   = SmmCommunication->Communicate (SmmCommunication, CommBuffer, &CommSize);
  if (EFI_ERROR (Status)) {
    Print (L"SmiHandlerProfile: SmmCommunication - %r\n", Status);
    return;
  }
 
  if (CommGetInfo->Header.ReturnStatus != 0) {
    Print (L"SmiHandlerProfile: GetInfo - 0x%0x\n", CommGetInfo->Header.ReturnStatus);
    return;
  }
 
  mSmiHandlerProfileDatabaseSize = (UINTN)CommGetInfo->DataSize;
 
  //
  // Get Data
  //
  mSmiHandlerProfileDatabase = AllocateZeroPool (mSmiHandlerProfileDatabaseSize);
  if (mSmiHandlerProfileDatabase == NULL) {
    Status = EFI_OUT_OF_RESOURCES;
    Print (L"SmiHandlerProfile: AllocateZeroPool (0x%x) for dump buffer - %r\n", mSmiHandlerProfileDatabaseSize, Status);
    return;
  }
 
  CommHeader = (EFI_SMM_COMMUNICATE_HEADER *)&CommBuffer[0];
  CopyMem (&CommHeader->HeaderGuid, &gSmiHandlerProfileGuid, sizeof (gSmiHandlerProfileGuid));
  CommHeader->MessageLength = sizeof (SMI_HANDLER_PROFILE_PARAMETER_GET_DATA_BY_OFFSET);
 
  CommGetData                      = (SMI_HANDLER_PROFILE_PARAMETER_GET_DATA_BY_OFFSET *)&CommBuffer[OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data)];
  CommGetData->Header.Command      = SMI_HANDLER_PROFILE_COMMAND_GET_DATA_BY_OFFSET;
  CommGetData->Header.DataLength   = sizeof (*CommGetData);
  CommGetData->Header.ReturnStatus = (UINT64)-1;
 
  CommSize = sizeof (EFI_GUID) + sizeof (UINTN) + CommHeader->MessageLength;
  Buffer   = (UINT8 *)CommHeader + CommSize;
  Size    -= CommSize;
 
  CommGetData->DataBuffer = (PHYSICAL_ADDRESS)(UINTN)Buffer;
  CommGetData->DataOffset = 0;
  while (CommGetData->DataOffset < mSmiHandlerProfileDatabaseSize) {
    Offset = (UINTN)CommGetData->DataOffset;
    if (Size <= (mSmiHandlerProfileDatabaseSize - CommGetData->DataOffset)) {
      CommGetData->DataSize = (UINT64)Size;
    } else {
      CommGetData->DataSize = (UINT64)(mSmiHandlerProfileDatabaseSize - CommGetData->DataOffset);
    }
 
    Status = SmmCommunication->Communicate (SmmCommunication, CommBuffer, &CommSize);
    ASSERT_EFI_ERROR (Status);
 
    if (CommGetData->Header.ReturnStatus != 0) {
      FreePool (mSmiHandlerProfileDatabase);
      mSmiHandlerProfileDatabase = NULL;
      Print (L"SmiHandlerProfile: GetData - 0x%x\n", CommGetData->Header.ReturnStatus);
      return;
    }
 
    CopyMem ((UINT8 *)mSmiHandlerProfileDatabase + Offset, (VOID *)(UINTN)CommGetData->DataBuffer, (UINTN)CommGetData->DataSize);
  }
 
  DEBUG ((DEBUG_INFO, "SmiHandlerProfileSize - 0x%x\n", mSmiHandlerProfileDatabaseSize));
 
  return;
}
 
VOID
GetShortPdbFileName (
  IN  CHAR8  *PdbFileName,
  OUT CHAR8  *AsciiBuffer
  )
{
  UINTN  IndexPdb;    // Current work location within a Pdb string.
  UINTN  IndexBuffer; // Current work location within a Buffer string.
  UINTN  StartIndex;
  UINTN  EndIndex;
 
  ZeroMem (AsciiBuffer, PROFILE_NAME_STRING_LENGTH + 1);
 
  if (PdbFileName == NULL) {
    AsciiStrnCpyS (AsciiBuffer, PROFILE_NAME_STRING_LENGTH + 1, " ", 1);
  } else {
    StartIndex = 0;
    for (EndIndex = 0; PdbFileName[EndIndex] != 0; EndIndex++) {
    }
 
    for (IndexPdb = 0; PdbFileName[IndexPdb] != 0; IndexPdb++) {
      if ((PdbFileName[IndexPdb] == '\\') || (PdbFileName[IndexPdb] == '/')) {
        StartIndex = IndexPdb + 1;
      }
 
      if (PdbFileName[IndexPdb] == '.') {
        EndIndex = IndexPdb;
      }
    }
 
    IndexBuffer = 0;
    for (IndexPdb = StartIndex; IndexPdb < EndIndex; IndexPdb++) {
      AsciiBuffer[IndexBuffer] = PdbFileName[IndexPdb];
      IndexBuffer++;
      if (IndexBuffer >= PROFILE_NAME_STRING_LENGTH) {
        AsciiBuffer[PROFILE_NAME_STRING_LENGTH] = 0;
        break;
      }
    }
  }
}
 
CHAR8 *
GetDriverNameString (
  IN SMM_CORE_IMAGE_DATABASE_STRUCTURE  *ImageStruct
  )
{
  EFI_STATUS  Status;
  CHAR16      *NameString;
  UINTN       StringSize;
 
  if (ImageStruct == NULL) {
    return "???";
  }
 
  //
  // Method 1: Get the name string from image PDB
  //
  if (ImageStruct->PdbStringOffset != 0) {
    GetShortPdbFileName ((CHAR8 *)((UINTN)ImageStruct + ImageStruct->PdbStringOffset), mNameString);
    return mNameString;
  }
 
  if (!IsZeroGuid (&ImageStruct->FileGuid)) {
    //
    // Try to get the image's FFS UI section by image GUID
    //
    NameString = NULL;
    StringSize = 0;
    Status     = GetSectionFromAnyFv (
                   &ImageStruct->FileGuid,
                   EFI_SECTION_USER_INTERFACE,
                   0,
                   (VOID **)&NameString,
                   &StringSize
                   );
    if (!EFI_ERROR (Status)) {
      //
      // Method 2: Get the name string from FFS UI section
      //
      if (StrLen (NameString) > PROFILE_NAME_STRING_LENGTH) {
        NameString[PROFILE_NAME_STRING_LENGTH] = 0;
      }
 
      UnicodeStrToAsciiStrS (NameString, mNameString, sizeof (mNameString));
      FreePool (NameString);
      return mNameString;
    }
  }
 
  //
  // Method 3: Get the name string from image GUID
  //
  AsciiSPrint (mNameString, sizeof (mNameString), "%g", &ImageStruct->FileGuid);
  return mNameString;
}
 
SMM_CORE_IMAGE_DATABASE_STRUCTURE *
GetImageFromRef (
  IN UINTN  ImageRef
  )
{
  SMM_CORE_IMAGE_DATABASE_STRUCTURE  *ImageStruct;
 
  ImageStruct = (VOID *)mSmiHandlerProfileDatabase;
  while ((UINTN)ImageStruct < (UINTN)mSmiHandlerProfileDatabase + mSmiHandlerProfileDatabaseSize) {
    if (ImageStruct->Header.Signature == SMM_CORE_IMAGE_DATABASE_SIGNATURE) {
      if (ImageStruct->ImageRef == ImageRef) {
        return ImageStruct;
      }
    }
 
    ImageStruct = (VOID *)((UINTN)ImageStruct + ImageStruct->Header.Length);
  }
 
  return NULL;
}
 
VOID
DumpSmmLoadedImage (
  VOID
  )
{
  SMM_CORE_IMAGE_DATABASE_STRUCTURE  *ImageStruct;
  CHAR8                              *PdbString;
  CHAR8                              *NameString;
 
  ImageStruct = (VOID *)mSmiHandlerProfileDatabase;
  while ((UINTN)ImageStruct < (UINTN)mSmiHandlerProfileDatabase + mSmiHandlerProfileDatabaseSize) {
    if (ImageStruct->Header.Signature == SMM_CORE_IMAGE_DATABASE_SIGNATURE) {
      NameString = GetDriverNameString (ImageStruct);
      Print (L"  <Image Name=\"%a\"", NameString);
      Print (L" Base=\"0x%lx\" Size=\"0x%lx\"", ImageStruct->ImageBase, ImageStruct->ImageSize);
      if (ImageStruct->EntryPoint != 0) {
        Print (L" EntryPoint=\"0x%lx\"", ImageStruct->EntryPoint);
      }
 
      Print (L" FvFile=\"%g\"", &ImageStruct->FileGuid);
      Print (L" RefId=\"0x%x\"", ImageStruct->ImageRef);
      Print (L">\n");
      if (ImageStruct->PdbStringOffset != 0) {
        PdbString = (CHAR8 *)((UINTN)ImageStruct + ImageStruct->PdbStringOffset);
        Print (L"    <Pdb>%a</Pdb>\n", PdbString);
      }
 
      Print (L"  </Image>\n");
    }
 
    ImageStruct = (VOID *)((UINTN)ImageStruct + ImageStruct->Header.Length);
  }
 
  return;
}
 
CHAR8  *mSxTypeString[] = {
  "SxS0",
  "SxS1",
  "SxS2",
  "SxS3",
  "SxS4",
  "SxS5",
};
 
CHAR8 *
SxTypeToString (
  IN EFI_SLEEP_TYPE  Type
  )
{
  if ((Type >= 0) && (Type < ARRAY_SIZE (mSxTypeString))) {
    return mSxTypeString[Type];
  } else {
    AsciiSPrint (mNameString, sizeof (mNameString), "0x%x", Type);
    return mNameString;
  }
}
 
CHAR8  *mSxPhaseString[] = {
  "SxEntry",
  "SxExit",
};
 
CHAR8 *
SxPhaseToString (
  IN EFI_SLEEP_PHASE  Phase
  )
{
  if ((Phase >= 0) && (Phase < ARRAY_SIZE (mSxPhaseString))) {
    return mSxPhaseString[Phase];
  } else {
    AsciiSPrint (mNameString, sizeof (mNameString), "0x%x", Phase);
    return mNameString;
  }
}
 
CHAR8  *mPowerButtonPhaseString[] = {
  "PowerButtonEntry",
  "PowerButtonExit",
};
 
CHAR8 *
PowerButtonPhaseToString (
  IN EFI_POWER_BUTTON_PHASE  Phase
  )
{
  if ((Phase >= 0) && (Phase < ARRAY_SIZE (mPowerButtonPhaseString))) {
    return mPowerButtonPhaseString[Phase];
  } else {
    AsciiSPrint (mNameString, sizeof (mNameString), "0x%x", Phase);
    return mNameString;
  }
}
 
CHAR8  *mStandbyButtonPhaseString[] = {
  "StandbyButtonEntry",
  "StandbyButtonExit",
};
 
CHAR8 *
StandbyButtonPhaseToString (
  IN EFI_STANDBY_BUTTON_PHASE  Phase
  )
{
  if ((Phase >= 0) && (Phase < ARRAY_SIZE (mStandbyButtonPhaseString))) {
    return mStandbyButtonPhaseString[Phase];
  } else {
    AsciiSPrint (mNameString, sizeof (mNameString), "0x%x", Phase);
    return mNameString;
  }
}
 
CHAR8  *mIoTrapTypeString[] = {
  "WriteTrap",
  "ReadTrap",
  "ReadWriteTrap",
};
 
CHAR8 *
IoTrapTypeToString (
  IN EFI_SMM_IO_TRAP_DISPATCH_TYPE  Type
  )
{
  if ((Type >= 0) && (Type < ARRAY_SIZE (mIoTrapTypeString))) {
    return mIoTrapTypeString[Type];
  } else {
    AsciiSPrint (mNameString, sizeof (mNameString), "0x%x", Type);
    return mNameString;
  }
}
 
CHAR8  *mUsbTypeString[] = {
  "UsbLegacy",
  "UsbWake",
};
 
CHAR8 *
UsbTypeToString (
  IN EFI_USB_SMI_TYPE  Type
  )
{
  if ((Type >= 0) && (Type < ARRAY_SIZE (mUsbTypeString))) {
    return mUsbTypeString[Type];
  } else {
    AsciiSPrint (mNameString, sizeof (mNameString), "0x%x", Type);
    return mNameString;
  }
}
 
VOID
DumpSmiChildContext (
  IN EFI_GUID  *HandlerType,
  IN VOID      *Context,
  IN UINTN     ContextSize
  )
{
  CHAR16  *Str;
 
  if (CompareGuid (HandlerType, &gEfiSmmSwDispatch2ProtocolGuid)) {
    Print (L" SwSmi=\"0x%lx\"", ((SMI_HANDLER_PROFILE_SW_REGISTER_CONTEXT *)Context)->SwSmiInputValue);
  } else if (CompareGuid (HandlerType, &gEfiSmmSxDispatch2ProtocolGuid)) {
    Print (L" SxType=\"%a\"", SxTypeToString (((EFI_SMM_SX_REGISTER_CONTEXT *)Context)->Type));
    Print (L" SxPhase=\"%a\"", SxPhaseToString (((EFI_SMM_SX_REGISTER_CONTEXT *)Context)->Phase));
  } else if (CompareGuid (HandlerType, &gEfiSmmPowerButtonDispatch2ProtocolGuid)) {
    Print (L" PowerButtonPhase=\"%a\"", PowerButtonPhaseToString (((EFI_SMM_POWER_BUTTON_REGISTER_CONTEXT *)Context)->Phase));
  } else if (CompareGuid (HandlerType, &gEfiSmmStandbyButtonDispatch2ProtocolGuid)) {
    Print (L" StandbyButtonPhase=\"%a\"", StandbyButtonPhaseToString (((EFI_SMM_STANDBY_BUTTON_REGISTER_CONTEXT *)Context)->Phase));
  } else if (CompareGuid (HandlerType, &gEfiSmmPeriodicTimerDispatch2ProtocolGuid)) {
    Print (L" PeriodicTimerPeriod=\"%ld\"", ((EFI_SMM_PERIODIC_TIMER_REGISTER_CONTEXT *)Context)->Period);
    Print (L" PeriodicTimerSmiTickInterval=\"%ld\"", ((EFI_SMM_PERIODIC_TIMER_REGISTER_CONTEXT *)Context)->SmiTickInterval);
  } else if (CompareGuid (HandlerType, &gEfiSmmGpiDispatch2ProtocolGuid)) {
    Print (L" GpiNum=\"0x%lx\"", ((EFI_SMM_GPI_REGISTER_CONTEXT *)Context)->GpiNum);
  } else if (CompareGuid (HandlerType, &gEfiSmmIoTrapDispatch2ProtocolGuid)) {
    Print (L" IoTrapAddress=\"0x%x\"", ((EFI_SMM_IO_TRAP_REGISTER_CONTEXT *)Context)->Address);
    Print (L" IoTrapLength=\"0x%x\"", ((EFI_SMM_IO_TRAP_REGISTER_CONTEXT *)Context)->Length);
    Print (L" IoTrapType=\"%a\"", IoTrapTypeToString (((EFI_SMM_IO_TRAP_REGISTER_CONTEXT *)Context)->Type));
  } else if (CompareGuid (HandlerType, &gEfiSmmUsbDispatch2ProtocolGuid)) {
    Print (L" UsbType=\"0x%x\"", UsbTypeToString (((SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT *)Context)->Type));
    Str = ConvertDevicePathToText ((EFI_DEVICE_PATH_PROTOCOL *)(((SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT *)Context) + 1), TRUE, TRUE);
    Print (L" UsbDevicePath=\"%s\"", Str);
    if (Str != NULL) {
      FreePool (Str);
    }
  } else {
    Print (L" Context=\"");
    InternalDumpData (Context, ContextSize);
    Print (L"\"");
  }
}
 
VOID
DumpSmiHandler (
  IN UINT32  HandlerCategory
  )
{
  SMM_CORE_SMI_DATABASE_STRUCTURE    *SmiStruct;
  SMM_CORE_SMI_HANDLER_STRUCTURE     *SmiHandlerStruct;
  UINTN                              Index;
  SMM_CORE_IMAGE_DATABASE_STRUCTURE  *ImageStruct;
  CHAR8                              *NameString;
 
  SmiStruct = (VOID *)mSmiHandlerProfileDatabase;
  while ((UINTN)SmiStruct < (UINTN)mSmiHandlerProfileDatabase + mSmiHandlerProfileDatabaseSize) {
    if ((SmiStruct->Header.Signature == SMM_CORE_SMI_DATABASE_SIGNATURE) && (SmiStruct->HandlerCategory == HandlerCategory)) {
      SmiHandlerStruct = (VOID *)(SmiStruct + 1);
      Print (L"  <SmiEntry");
      if (!IsZeroGuid (&SmiStruct->HandlerType)) {
        Print (L" HandlerType=\"%g\"", &SmiStruct->HandlerType);
      }
 
      Print (L">\n");
      for (Index = 0; Index < SmiStruct->HandlerCount; Index++) {
        Print (L"    <SmiHandler");
        if (SmiHandlerStruct->ContextBufferSize != 0) {
          DumpSmiChildContext (&SmiStruct->HandlerType, (UINT8 *)SmiHandlerStruct + SmiHandlerStruct->ContextBufferOffset, SmiHandlerStruct->ContextBufferSize);
        }
 
        Print (L">\n");
        ImageStruct = GetImageFromRef ((UINTN)SmiHandlerStruct->ImageRef);
        NameString  = GetDriverNameString (ImageStruct);
        Print (L"      <Module RefId=\"0x%x\" Name=\"%a\">\n", SmiHandlerStruct->ImageRef, NameString);
        if ((ImageStruct != NULL) && (ImageStruct->PdbStringOffset != 0)) {
          Print (L"      <Pdb>%a</Pdb>\n", (UINT8 *)ImageStruct + ImageStruct->PdbStringOffset);
        }
 
        Print (L"      </Module>\n");
        Print (L"      <Handler Address=\"0x%lx\">\n", SmiHandlerStruct->Handler);
        if (ImageStruct != NULL) {
          Print (L"         <RVA>0x%x</RVA>\n", (UINTN)(SmiHandlerStruct->Handler - ImageStruct->ImageBase));
        }
 
        Print (L"      </Handler>\n", SmiHandlerStruct->Handler);
        Print (L"      <Caller Address=\"0x%lx\">\n", SmiHandlerStruct->CallerAddr);
        if (ImageStruct != NULL) {
          Print (L"         <RVA>0x%x</RVA>\n", (UINTN)(SmiHandlerStruct->CallerAddr - ImageStruct->ImageBase));
        }
 
        Print (L"      </Caller>\n", SmiHandlerStruct->Handler);
        SmiHandlerStruct = (VOID *)((UINTN)SmiHandlerStruct + SmiHandlerStruct->Length);
        Print (L"    </SmiHandler>\n");
      }
 
      Print (L"  </SmiEntry>\n");
    }
 
    SmiStruct = (VOID *)((UINTN)SmiStruct + SmiStruct->Header.Length);
  }
 
  return;
}
 
EFI_STATUS
EFIAPI
SmiHandlerProfileInfoEntrypoint (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  )
{
  GetSmiHandlerProfileDatabase ();
 
  if (mSmiHandlerProfileDatabase == NULL) {
    return EFI_SUCCESS;
  }
 
  //
  // Dump all image
  //
  Print (L"<?xml version=\"1.0\" encoding=\"utf-16\"?>\n");
  Print (L"<SmiHandlerProfile>\n");
  Print (L"<ImageDatabase>\n");
  Print (L"  <!-- SMM image loaded -->\n");
  DumpSmmLoadedImage ();
  Print (L"</ImageDatabase>\n\n");
 
  //
  // Dump SMI Handler
  //
  Print (L"<SmiHandlerDatabase>\n");
  Print (L"  <!-- SMI Handler registered -->\n\n");
  Print (L"  <SmiHandlerCategory Name=\"RootSmi\">\n");
  Print (L"  <!-- The root SMI Handler registered by SmmCore -->\n");
  DumpSmiHandler (SmmCoreSmiHandlerCategoryRootHandler);
  Print (L"  </SmiHandlerCategory>\n\n");
 
  Print (L"  <SmiHandlerCategory Name=\"GuidSmi\">\n");
  Print (L"  <!-- The GUID SMI Handler registered by SmmCore -->\n");
  DumpSmiHandler (SmmCoreSmiHandlerCategoryGuidHandler);
  Print (L"  </SmiHandlerCategory>\n\n");
 
  Print (L"  <SmiHandlerCategory Name=\"HardwareSmi\">\n");
  Print (L"  <!-- The hardware SMI Handler registered by SmmChildDispatcher -->\n");
  DumpSmiHandler (SmmCoreSmiHandlerCategoryHardwareHandler);
  Print (L"  </SmiHandlerCategory>\n\n");
 
  Print (L"</SmiHandlerDatabase>\n");
  Print (L"</SmiHandlerProfile>\n");
 
  if (mSmiHandlerProfileDatabase != NULL) {
    FreePool (mSmiHandlerProfileDatabase);
  }
 
  return EFI_SUCCESS;
}