/** @file
  Support routines for UEFI memory profile.

  Copyright (c) 2014 - 2018, Intel Corporation. All rights reserved.<BR>
  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#include "DxeMain.h"
#include "Imem.h"

#define IS_UEFI_MEMORY_PROFILE_ENABLED  ((PcdGet8 (PcdMemoryProfilePropertyMask) & BIT0) != 0)

#define GET_OCCUPIED_SIZE(ActualSize, Alignment) \
  ((ActualSize) + (((Alignment) - ((ActualSize) & ((Alignment) - 1))) & ((Alignment) - 1)))

typedef struct {
  UINT32                    Signature;
  MEMORY_PROFILE_CONTEXT    Context;
  LIST_ENTRY                *DriverInfoList;
} MEMORY_PROFILE_CONTEXT_DATA;

typedef struct {
  UINT32                        Signature;
  MEMORY_PROFILE_DRIVER_INFO    DriverInfo;
  LIST_ENTRY                    *AllocInfoList;
  CHAR8                         *PdbString;
  LIST_ENTRY                    Link;
} MEMORY_PROFILE_DRIVER_INFO_DATA;

typedef struct {
  UINT32                       Signature;
  MEMORY_PROFILE_ALLOC_INFO    AllocInfo;
  CHAR8                        *ActionString;
  LIST_ENTRY                   Link;
} MEMORY_PROFILE_ALLOC_INFO_DATA;

GLOBAL_REMOVE_IF_UNREFERENCED LIST_ENTRY                   mImageQueue           = INITIALIZE_LIST_HEAD_VARIABLE (mImageQueue);
GLOBAL_REMOVE_IF_UNREFERENCED MEMORY_PROFILE_CONTEXT_DATA  mMemoryProfileContext = {
  MEMORY_PROFILE_CONTEXT_SIGNATURE,
  {
    {
      MEMORY_PROFILE_CONTEXT_SIGNATURE,
      sizeof (MEMORY_PROFILE_CONTEXT),
      MEMORY_PROFILE_CONTEXT_REVISION
    },
    0,
    0,
    { 0 },
    { 0 },
    0,
    0,
    0
  },
  &mImageQueue,
};
GLOBAL_REMOVE_IF_UNREFERENCED MEMORY_PROFILE_CONTEXT_DATA  *mMemoryProfileContextPtr = NULL;

GLOBAL_REMOVE_IF_UNREFERENCED EFI_LOCK                  mMemoryProfileLock            = EFI_INITIALIZE_LOCK_VARIABLE (TPL_NOTIFY);
GLOBAL_REMOVE_IF_UNREFERENCED BOOLEAN                   mMemoryProfileGettingStatus   = FALSE;
GLOBAL_REMOVE_IF_UNREFERENCED BOOLEAN                   mMemoryProfileRecordingEnable = MEMORY_PROFILE_RECORDING_DISABLE;
GLOBAL_REMOVE_IF_UNREFERENCED EFI_DEVICE_PATH_PROTOCOL  *mMemoryProfileDriverPath;
GLOBAL_REMOVE_IF_UNREFERENCED UINTN                     mMemoryProfileDriverPathSize;

/**
  Get memory profile data.

  @param[in]      This              The EDKII_MEMORY_PROFILE_PROTOCOL instance.
  @param[in, out] ProfileSize       On entry, points to the size in bytes of the ProfileBuffer.
                                    On return, points to the size of the data returned in ProfileBuffer.
  @param[out]     ProfileBuffer     Profile buffer.

  @return EFI_SUCCESS               Get the memory profile data successfully.
  @return EFI_UNSUPPORTED           Memory profile is unsupported.
  @return EFI_BUFFER_TO_SMALL       The ProfileSize is too small for the resulting data.
                                    ProfileSize is updated with the size required.

**/
EFI_STATUS
EFIAPI
ProfileProtocolGetData (
  IN     EDKII_MEMORY_PROFILE_PROTOCOL  *This,
  IN OUT UINT64                         *ProfileSize,
  OUT VOID                              *ProfileBuffer
  );

/**
  Register image to memory profile.

  @param[in] This               The EDKII_MEMORY_PROFILE_PROTOCOL instance.
  @param[in] FilePath           File path of the image.
  @param[in] ImageBase          Image base address.
  @param[in] ImageSize          Image size.
  @param[in] FileType           File type of the image.

  @return EFI_SUCCESS           Register successfully.
  @return EFI_UNSUPPORTED       Memory profile is unsupported,
                                or memory profile for the image is not required.
  @return EFI_OUT_OF_RESOURCE   No enough resource for this register.

**/
EFI_STATUS
EFIAPI
ProfileProtocolRegisterImage (
  IN EDKII_MEMORY_PROFILE_PROTOCOL  *This,
  IN EFI_DEVICE_PATH_PROTOCOL       *FilePath,
  IN PHYSICAL_ADDRESS               ImageBase,
  IN UINT64                         ImageSize,
  IN EFI_FV_FILETYPE                FileType
  );

/**
  Unregister image from memory profile.

  @param[in] This               The EDKII_MEMORY_PROFILE_PROTOCOL instance.
  @param[in] FilePath           File path of the image.
  @param[in] ImageBase          Image base address.
  @param[in] ImageSize          Image size.

  @return EFI_SUCCESS           Unregister successfully.
  @return EFI_UNSUPPORTED       Memory profile is unsupported,
                                or memory profile for the image is not required.
  @return EFI_NOT_FOUND         The image is not found.

**/
EFI_STATUS
EFIAPI
ProfileProtocolUnregisterImage (
  IN EDKII_MEMORY_PROFILE_PROTOCOL  *This,
  IN EFI_DEVICE_PATH_PROTOCOL       *FilePath,
  IN PHYSICAL_ADDRESS               ImageBase,
  IN UINT64                         ImageSize
  );

/**
  Get memory profile recording state.

  @param[in]  This              The EDKII_MEMORY_PROFILE_PROTOCOL instance.
  @param[out] RecordingState    Recording state.

  @return EFI_SUCCESS           Memory profile recording state is returned.
  @return EFI_UNSUPPORTED       Memory profile is unsupported.
  @return EFI_INVALID_PARAMETER RecordingState is NULL.

**/
EFI_STATUS
EFIAPI
ProfileProtocolGetRecordingState (
  IN EDKII_MEMORY_PROFILE_PROTOCOL  *This,
  OUT BOOLEAN                       *RecordingState
  );

/**
  Set memory profile recording state.

  @param[in] This               The EDKII_MEMORY_PROFILE_PROTOCOL instance.
  @param[in] RecordingState     Recording state.

  @return EFI_SUCCESS           Set memory profile recording state successfully.
  @return EFI_UNSUPPORTED       Memory profile is unsupported.

**/
EFI_STATUS
EFIAPI
ProfileProtocolSetRecordingState (
  IN EDKII_MEMORY_PROFILE_PROTOCOL  *This,
  IN BOOLEAN                        RecordingState
  );

/**
  Record memory profile of multilevel caller.

  @param[in] This               The EDKII_MEMORY_PROFILE_PROTOCOL instance.
  @param[in] CallerAddress      Address of caller.
  @param[in] Action             Memory profile action.
  @param[in] MemoryType         Memory type.
                                EfiMaxMemoryType means the MemoryType is unknown.
  @param[in] Buffer             Buffer address.
  @param[in] Size               Buffer size.
  @param[in] ActionString       String for memory profile action.
                                Only needed for user defined allocate action.

  @return EFI_SUCCESS           Memory profile is updated.
  @return EFI_UNSUPPORTED       Memory profile is unsupported,
                                or memory profile for the image is not required,
                                or memory profile for the memory type is not required.
  @return EFI_ACCESS_DENIED     It is during memory profile data getting.
  @return EFI_ABORTED           Memory profile recording is not enabled.
  @return EFI_OUT_OF_RESOURCES  No enough resource to update memory profile for allocate action.
  @return EFI_NOT_FOUND         No matched allocate info found for free action.

**/
EFI_STATUS
EFIAPI
ProfileProtocolRecord (
  IN EDKII_MEMORY_PROFILE_PROTOCOL  *This,
  IN PHYSICAL_ADDRESS               CallerAddress,
  IN MEMORY_PROFILE_ACTION          Action,
  IN EFI_MEMORY_TYPE                MemoryType,
  IN VOID                           *Buffer,
  IN UINTN                          Size,
  IN CHAR8                          *ActionString OPTIONAL
  );

GLOBAL_REMOVE_IF_UNREFERENCED EDKII_MEMORY_PROFILE_PROTOCOL  mProfileProtocol = {
  ProfileProtocolGetData,
  ProfileProtocolRegisterImage,
  ProfileProtocolUnregisterImage,
  ProfileProtocolGetRecordingState,
  ProfileProtocolSetRecordingState,
  ProfileProtocolRecord,
};

/**
  Acquire lock on mMemoryProfileLock.
**/
VOID
CoreAcquireMemoryProfileLock (
  VOID
  )
{
  CoreAcquireLock (&mMemoryProfileLock);
}

/**
  Release lock on mMemoryProfileLock.
**/
VOID
CoreReleaseMemoryProfileLock (
  VOID
  )
{
  CoreReleaseLock (&mMemoryProfileLock);
}

/**
  Return memory profile context.

  @return Memory profile context.

**/
MEMORY_PROFILE_CONTEXT_DATA *
GetMemoryProfileContext (
  VOID
  )
{
  return mMemoryProfileContextPtr;
}

/**
  Retrieves and returns the Subsystem of a PE/COFF image that has been loaded into system memory.
  If Pe32Data is NULL, then ASSERT().

  @param Pe32Data   The pointer to the PE/COFF image that is loaded in system memory.

  @return The Subsystem of the PE/COFF image.

**/
UINT16
InternalPeCoffGetSubsystem (
  IN VOID  *Pe32Data
  )
{
  EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION  Hdr;
  EFI_IMAGE_DOS_HEADER                 *DosHdr;
  UINT16                               Magic;

  ASSERT (Pe32Data != NULL);

  DosHdr = (EFI_IMAGE_DOS_HEADER *)Pe32Data;
  if (DosHdr->e_magic == EFI_IMAGE_DOS_SIGNATURE) {
    //
    // DOS image header is present, so read the PE header after the DOS image header.
    //
    Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN)Pe32Data + (UINTN)((DosHdr->e_lfanew) & 0x0ffff));
  } else {
    //
    // DOS image header is not present, so PE header is at the image base.
    //
    Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)Pe32Data;
  }

  if (Hdr.Te->Signature == EFI_TE_IMAGE_HEADER_SIGNATURE) {
    return Hdr.Te->Subsystem;
  } else if (Hdr.Pe32->Signature == EFI_IMAGE_NT_SIGNATURE) {
    Magic = Hdr.Pe32->OptionalHeader.Magic;
    if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
      return Hdr.Pe32->OptionalHeader.Subsystem;
    } else if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC) {
      return Hdr.Pe32Plus->OptionalHeader.Subsystem;
    }
  }

  return 0x0000;
}

/**
  Retrieves and returns a pointer to the entry point to a PE/COFF image that has been loaded
  into system memory with the PE/COFF Loader Library functions.

  Retrieves the entry point to the PE/COFF image specified by Pe32Data and returns this entry
  point in EntryPoint.  If the entry point could not be retrieved from the PE/COFF image, then
  return RETURN_INVALID_PARAMETER.  Otherwise return RETURN_SUCCESS.
  If Pe32Data is NULL, then ASSERT().
  If EntryPoint is NULL, then ASSERT().

  @param  Pe32Data                  The pointer to the PE/COFF image that is loaded in system memory.
  @param  EntryPoint                The pointer to entry point to the PE/COFF image to return.

  @retval RETURN_SUCCESS            EntryPoint was returned.
  @retval RETURN_INVALID_PARAMETER  The entry point could not be found in the PE/COFF image.

**/
RETURN_STATUS
InternalPeCoffGetEntryPoint (
  IN  VOID  *Pe32Data,
  OUT VOID  **EntryPoint
  )
{
  EFI_IMAGE_DOS_HEADER                 *DosHdr;
  EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION  Hdr;

  ASSERT (Pe32Data   != NULL);
  ASSERT (EntryPoint != NULL);

  DosHdr = (EFI_IMAGE_DOS_HEADER *)Pe32Data;
  if (DosHdr->e_magic == EFI_IMAGE_DOS_SIGNATURE) {
    //
    // DOS image header is present, so read the PE header after the DOS image header.
    //
    Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN)Pe32Data + (UINTN)((DosHdr->e_lfanew) & 0x0ffff));
  } else {
    //
    // DOS image header is not present, so PE header is at the image base.
    //
    Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)Pe32Data;
  }

  //
  // Calculate the entry point relative to the start of the image.
  // AddressOfEntryPoint is common for PE32 & PE32+
  //
  if (Hdr.Te->Signature == EFI_TE_IMAGE_HEADER_SIGNATURE) {
    *EntryPoint = (VOID *)((UINTN)Pe32Data + (UINTN)(Hdr.Te->AddressOfEntryPoint & 0x0ffffffff) + sizeof (EFI_TE_IMAGE_HEADER) - Hdr.Te->StrippedSize);
    return RETURN_SUCCESS;
  } else if (Hdr.Pe32->Signature == EFI_IMAGE_NT_SIGNATURE) {
    *EntryPoint = (VOID *)((UINTN)Pe32Data + (UINTN)(Hdr.Pe32->OptionalHeader.AddressOfEntryPoint & 0x0ffffffff));
    return RETURN_SUCCESS;
  }

  return RETURN_UNSUPPORTED;
}

/**
  Build driver info.

  @param ContextData    Memory profile context.
  @param FileName       File name of the image.
  @param ImageBase      Image base address.
  @param ImageSize      Image size.
  @param EntryPoint     Entry point of the image.
  @param ImageSubsystem Image subsystem of the image.
  @param FileType       File type of the image.

  @return Pointer to memory profile driver info.

**/
MEMORY_PROFILE_DRIVER_INFO_DATA *
BuildDriverInfo (
  IN MEMORY_PROFILE_CONTEXT_DATA  *ContextData,
  IN EFI_GUID                     *FileName,
  IN PHYSICAL_ADDRESS             ImageBase,
  IN UINT64                       ImageSize,
  IN PHYSICAL_ADDRESS             EntryPoint,
  IN UINT16                       ImageSubsystem,
  IN EFI_FV_FILETYPE              FileType
  )
{
  EFI_STATUS                       Status;
  MEMORY_PROFILE_DRIVER_INFO       *DriverInfo;
  MEMORY_PROFILE_DRIVER_INFO_DATA  *DriverInfoData;
  VOID                             *EntryPointInImage;
  CHAR8                            *PdbString;
  UINTN                            PdbSize;
  UINTN                            PdbOccupiedSize;

  PdbSize         = 0;
  PdbOccupiedSize = 0;
  PdbString       = NULL;
  if (ImageBase != 0) {
    PdbString = PeCoffLoaderGetPdbPointer ((VOID *)(UINTN)ImageBase);
    if (PdbString != NULL) {
      PdbSize         = AsciiStrSize (PdbString);
      PdbOccupiedSize = GET_OCCUPIED_SIZE (PdbSize, sizeof (UINT64));
    }
  }

  //
  // Use CoreInternalAllocatePool() that will not update profile for this AllocatePool action.
  //
  Status = CoreInternalAllocatePool (
             EfiBootServicesData,
             sizeof (*DriverInfoData) + sizeof (LIST_ENTRY) + PdbSize,
             (VOID **)&DriverInfoData
             );
  if (EFI_ERROR (Status)) {
    return NULL;
  }

  ASSERT (DriverInfoData != NULL);

  ZeroMem (DriverInfoData, sizeof (*DriverInfoData));

  DriverInfo                   = &DriverInfoData->DriverInfo;
  DriverInfoData->Signature    = MEMORY_PROFILE_DRIVER_INFO_SIGNATURE;
  DriverInfo->Header.Signature = MEMORY_PROFILE_DRIVER_INFO_SIGNATURE;
  DriverInfo->Header.Length    = (UINT16)(sizeof (MEMORY_PROFILE_DRIVER_INFO) + PdbOccupiedSize);
  DriverInfo->Header.Revision  = MEMORY_PROFILE_DRIVER_INFO_REVISION;
  if (FileName != NULL) {
    CopyMem (&DriverInfo->FileName, FileName, sizeof (EFI_GUID));
  }

  DriverInfo->ImageBase      = ImageBase;
  DriverInfo->ImageSize      = ImageSize;
  DriverInfo->EntryPoint     = EntryPoint;
  DriverInfo->ImageSubsystem = ImageSubsystem;
  if ((EntryPoint != 0) && ((EntryPoint < ImageBase) || (EntryPoint >= (ImageBase + ImageSize)))) {
    //
    // If the EntryPoint is not in the range of image buffer, it should come from emulation environment.
    // So patch ImageBuffer here to align the EntryPoint.
    //
    Status = InternalPeCoffGetEntryPoint ((VOID *)(UINTN)ImageBase, &EntryPointInImage);
    ASSERT_EFI_ERROR (Status);
    DriverInfo->ImageBase = ImageBase + EntryPoint - (PHYSICAL_ADDRESS)(UINTN)EntryPointInImage;
  }

  DriverInfo->FileType          = FileType;
  DriverInfoData->AllocInfoList = (LIST_ENTRY *)(DriverInfoData + 1);
  InitializeListHead (DriverInfoData->AllocInfoList);
  DriverInfo->CurrentUsage     = 0;
  DriverInfo->PeakUsage        = 0;
  DriverInfo->AllocRecordCount = 0;
  if (PdbSize != 0) {
    DriverInfo->PdbStringOffset = (UINT16)sizeof (MEMORY_PROFILE_DRIVER_INFO);
    DriverInfoData->PdbString   = (CHAR8 *)(DriverInfoData->AllocInfoList + 1);
    CopyMem (DriverInfoData->PdbString, PdbString, PdbSize);
  } else {
    DriverInfo->PdbStringOffset = 0;
    DriverInfoData->PdbString   = NULL;
  }

  InsertTailList (ContextData->DriverInfoList, &DriverInfoData->Link);
  ContextData->Context.ImageCount++;
  ContextData->Context.TotalImageSize += DriverInfo->ImageSize;

  return DriverInfoData;
}

/**
  Return if record for this driver is needed..

  @param DriverFilePath     Driver file path.

  @retval TRUE              Record for this driver is needed.
  @retval FALSE             Record for this driver is not needed.

**/
BOOLEAN
NeedRecordThisDriver (
  IN EFI_DEVICE_PATH_PROTOCOL  *DriverFilePath
  )
{
  EFI_DEVICE_PATH_PROTOCOL  *TmpDevicePath;
  EFI_DEVICE_PATH_PROTOCOL  *DevicePathInstance;
  UINTN                     DevicePathSize;
  UINTN                     FilePathSize;

  if (!IsDevicePathValid (mMemoryProfileDriverPath, mMemoryProfileDriverPathSize)) {
    //
    // Invalid Device Path means record all.
    //
    return TRUE;
  }

  //
  // Record FilePath without END node.
  //
  FilePathSize = GetDevicePathSize (DriverFilePath) - sizeof (EFI_DEVICE_PATH_PROTOCOL);

  DevicePathInstance = mMemoryProfileDriverPath;
  do {
    //
    // Find END node (it might be END_ENTIRE or END_INSTANCE).
    //
    TmpDevicePath = DevicePathInstance;
    while (!IsDevicePathEndType (TmpDevicePath)) {
      TmpDevicePath = NextDevicePathNode (TmpDevicePath);
    }

    //
    // Do not compare END node.
    //
    DevicePathSize = (UINTN)TmpDevicePath - (UINTN)DevicePathInstance;
    if ((FilePathSize == DevicePathSize) &&
        (CompareMem (DriverFilePath, DevicePathInstance, DevicePathSize) == 0))
    {
      return TRUE;
    }

    //
    // Get next instance.
    //
    DevicePathInstance = (EFI_DEVICE_PATH_PROTOCOL *)((UINTN)DevicePathInstance + DevicePathSize + DevicePathNodeLength (TmpDevicePath));
  } while (DevicePathSubType (TmpDevicePath) != END_ENTIRE_DEVICE_PATH_SUBTYPE);

  return FALSE;
}

/**
  Register DXE Core to memory profile.

  @param HobStart       The start address of the HOB.
  @param ContextData    Memory profile context.

  @retval TRUE      Register success.
  @retval FALSE     Register fail.

**/
BOOLEAN
RegisterDxeCore (
  IN VOID                         *HobStart,
  IN MEMORY_PROFILE_CONTEXT_DATA  *ContextData
  )
{
  EFI_PEI_HOB_POINTERS               DxeCoreHob;
  MEMORY_PROFILE_DRIVER_INFO_DATA    *DriverInfoData;
  PHYSICAL_ADDRESS                   ImageBase;
  UINT8                              TempBuffer[sizeof (MEDIA_FW_VOL_FILEPATH_DEVICE_PATH) + sizeof (EFI_DEVICE_PATH_PROTOCOL)];
  MEDIA_FW_VOL_FILEPATH_DEVICE_PATH  *FilePath;

  ASSERT (ContextData != NULL);

  //
  // Searching for image hob
  //
  DxeCoreHob.Raw = HobStart;
  while ((DxeCoreHob.Raw = GetNextHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, DxeCoreHob.Raw)) != NULL) {
    if (CompareGuid (&DxeCoreHob.MemoryAllocationModule->MemoryAllocationHeader.Name, &gEfiHobMemoryAllocModuleGuid)) {
      //
      // Find Dxe Core HOB
      //
      if (CompareGuid (&DxeCoreHob.MemoryAllocationModule->ModuleName, &gEfiCallerIdGuid)) {
        break;
      }
    }

    DxeCoreHob.Raw = GET_NEXT_HOB (DxeCoreHob);
  }

  ASSERT (DxeCoreHob.Raw != NULL);

  FilePath = (MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *)TempBuffer;
  EfiInitializeFwVolDevicepathNode (FilePath, &DxeCoreHob.MemoryAllocationModule->ModuleName);
  SetDevicePathEndNode (FilePath + 1);

  if (!NeedRecordThisDriver ((EFI_DEVICE_PATH_PROTOCOL *)FilePath)) {
    return FALSE;
  }

  ImageBase      = DxeCoreHob.MemoryAllocationModule->MemoryAllocationHeader.MemoryBaseAddress;
  DriverInfoData = BuildDriverInfo (
                     ContextData,
                     &DxeCoreHob.MemoryAllocationModule->ModuleName,
                     ImageBase,
                     DxeCoreHob.MemoryAllocationModule->MemoryAllocationHeader.MemoryLength,
                     DxeCoreHob.MemoryAllocationModule->EntryPoint,
                     InternalPeCoffGetSubsystem ((VOID *)(UINTN)ImageBase),
                     EFI_FV_FILETYPE_DXE_CORE
                     );
  if (DriverInfoData == NULL) {
    return FALSE;
  }

  return TRUE;
}

/**
  Initialize memory profile.

  @param HobStart   The start address of the HOB.

**/
VOID
MemoryProfileInit (
  IN VOID  *HobStart
  )
{
  MEMORY_PROFILE_CONTEXT_DATA  *ContextData;

  if (!IS_UEFI_MEMORY_PROFILE_ENABLED) {
    return;
  }

  ContextData = GetMemoryProfileContext ();
  if (ContextData != NULL) {
    return;
  }

  mMemoryProfileGettingStatus = FALSE;
  if ((PcdGet8 (PcdMemoryProfilePropertyMask) & BIT7) != 0) {
    mMemoryProfileRecordingEnable = MEMORY_PROFILE_RECORDING_DISABLE;
  } else {
    mMemoryProfileRecordingEnable = MEMORY_PROFILE_RECORDING_ENABLE;
  }

  mMemoryProfileDriverPathSize = PcdGetSize (PcdMemoryProfileDriverPath);
  mMemoryProfileDriverPath     = AllocateCopyPool (mMemoryProfileDriverPathSize, PcdGetPtr (PcdMemoryProfileDriverPath));
  mMemoryProfileContextPtr     = &mMemoryProfileContext;

  RegisterDxeCore (HobStart, &mMemoryProfileContext);

  DEBUG ((DEBUG_INFO, "MemoryProfileInit MemoryProfileContext - 0x%x\n", &mMemoryProfileContext));
}

/**
  Install memory profile protocol.

**/
VOID
MemoryProfileInstallProtocol (
  VOID
  )
{
  EFI_HANDLE  Handle;
  EFI_STATUS  Status;

  if (!IS_UEFI_MEMORY_PROFILE_ENABLED) {
    return;
  }

  Handle = NULL;
  Status = CoreInstallMultipleProtocolInterfaces (
             &Handle,
             &gEdkiiMemoryProfileGuid,
             &mProfileProtocol,
             NULL
             );
  ASSERT_EFI_ERROR (Status);
}

/**
  Get the GUID file name from the file path.

  @param FilePath  File path.

  @return The GUID file name from the file path.

**/
EFI_GUID *
GetFileNameFromFilePath (
  IN EFI_DEVICE_PATH_PROTOCOL  *FilePath
  )
{
  MEDIA_FW_VOL_FILEPATH_DEVICE_PATH  *ThisFilePath;
  EFI_GUID                           *FileName;

  FileName = NULL;
  if (FilePath != NULL) {
    ThisFilePath = (MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *)FilePath;
    while (!IsDevicePathEnd (ThisFilePath)) {
      FileName = EfiGetNameGuidFromFwVolDevicePathNode (ThisFilePath);
      if (FileName != NULL) {
        break;
      }

      ThisFilePath = (MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *)NextDevicePathNode (ThisFilePath);
    }
  }

  return FileName;
}

/**
  Register image to memory profile.

  @param DriverEntry    Image info.
  @param FileType       Image file type.

  @return EFI_SUCCESS           Register successfully.
  @return EFI_UNSUPPORTED       Memory profile is unsupported,
                                or memory profile for the image is not required.
  @return EFI_OUT_OF_RESOURCES  No enough resource for this register.

**/
EFI_STATUS
RegisterMemoryProfileImage (
  IN LOADED_IMAGE_PRIVATE_DATA  *DriverEntry,
  IN EFI_FV_FILETYPE            FileType
  )
{
  MEMORY_PROFILE_CONTEXT_DATA      *ContextData;
  MEMORY_PROFILE_DRIVER_INFO_DATA  *DriverInfoData;

  if (!IS_UEFI_MEMORY_PROFILE_ENABLED) {
    return EFI_UNSUPPORTED;
  }

  if (!NeedRecordThisDriver (DriverEntry->Info.FilePath)) {
    return EFI_UNSUPPORTED;
  }

  ContextData = GetMemoryProfileContext ();
  if (ContextData == NULL) {
    return EFI_UNSUPPORTED;
  }

  DriverInfoData = BuildDriverInfo (
                     ContextData,
                     GetFileNameFromFilePath (DriverEntry->Info.FilePath),
                     DriverEntry->ImageContext.ImageAddress,
                     DriverEntry->ImageContext.ImageSize,
                     DriverEntry->ImageContext.EntryPoint,
                     DriverEntry->ImageContext.ImageType,
                     FileType
                     );
  if (DriverInfoData == NULL) {
    return EFI_OUT_OF_RESOURCES;
  }

  return EFI_SUCCESS;
}

/**
  Search image from memory profile.

  @param ContextData    Memory profile context.
  @param FileName       Image file name.
  @param Address        Image Address.

  @return Pointer to memory profile driver info.

**/
MEMORY_PROFILE_DRIVER_INFO_DATA *
GetMemoryProfileDriverInfoByFileNameAndAddress (
  IN MEMORY_PROFILE_CONTEXT_DATA  *ContextData,
  IN EFI_GUID                     *FileName,
  IN PHYSICAL_ADDRESS             Address
  )
{
  MEMORY_PROFILE_DRIVER_INFO       *DriverInfo;
  MEMORY_PROFILE_DRIVER_INFO_DATA  *DriverInfoData;
  LIST_ENTRY                       *DriverLink;
  LIST_ENTRY                       *DriverInfoList;

  DriverInfoList = ContextData->DriverInfoList;

  for (DriverLink = DriverInfoList->ForwardLink;
       DriverLink != DriverInfoList;
       DriverLink = DriverLink->ForwardLink)
  {
    DriverInfoData = CR (
                       DriverLink,
                       MEMORY_PROFILE_DRIVER_INFO_DATA,
                       Link,
                       MEMORY_PROFILE_DRIVER_INFO_SIGNATURE
                       );
    DriverInfo = &DriverInfoData->DriverInfo;
    if ((CompareGuid (&DriverInfo->FileName, FileName)) &&
        (Address >= DriverInfo->ImageBase) &&
        (Address < (DriverInfo->ImageBase + DriverInfo->ImageSize)))
    {
      return DriverInfoData;
    }
  }

  return NULL;
}

/**
  Search image from memory profile.
  It will return image, if (Address >= ImageBuffer) AND (Address < ImageBuffer + ImageSize).

  @param ContextData    Memory profile context.
  @param Address        Image or Function address.

  @return Pointer to memory profile driver info.

**/
MEMORY_PROFILE_DRIVER_INFO_DATA *
GetMemoryProfileDriverInfoFromAddress (
  IN MEMORY_PROFILE_CONTEXT_DATA  *ContextData,
  IN PHYSICAL_ADDRESS             Address
  )
{
  MEMORY_PROFILE_DRIVER_INFO       *DriverInfo;
  MEMORY_PROFILE_DRIVER_INFO_DATA  *DriverInfoData;
  LIST_ENTRY                       *DriverLink;
  LIST_ENTRY                       *DriverInfoList;

  DriverInfoList = ContextData->DriverInfoList;

  for (DriverLink = DriverInfoList->ForwardLink;
       DriverLink != DriverInfoList;
       DriverLink = DriverLink->ForwardLink)
  {
    DriverInfoData = CR (
                       DriverLink,
                       MEMORY_PROFILE_DRIVER_INFO_DATA,
                       Link,
                       MEMORY_PROFILE_DRIVER_INFO_SIGNATURE
                       );
    DriverInfo = &DriverInfoData->DriverInfo;
    if ((Address >= DriverInfo->ImageBase) &&
        (Address < (DriverInfo->ImageBase + DriverInfo->ImageSize)))
    {
      return DriverInfoData;
    }
  }

  return NULL;
}

/**
  Unregister image from memory profile.

  @param DriverEntry    Image info.

  @return EFI_SUCCESS           Unregister successfully.
  @return EFI_UNSUPPORTED       Memory profile is unsupported,
                                or memory profile for the image is not required.
  @return EFI_NOT_FOUND         The image is not found.

**/
EFI_STATUS
UnregisterMemoryProfileImage (
  IN LOADED_IMAGE_PRIVATE_DATA  *DriverEntry
  )
{
  EFI_STATUS                       Status;
  MEMORY_PROFILE_CONTEXT_DATA      *ContextData;
  MEMORY_PROFILE_DRIVER_INFO_DATA  *DriverInfoData;
  EFI_GUID                         *FileName;
  PHYSICAL_ADDRESS                 ImageAddress;
  VOID                             *EntryPointInImage;

  if (!IS_UEFI_MEMORY_PROFILE_ENABLED) {
    return EFI_UNSUPPORTED;
  }

  if (!NeedRecordThisDriver (DriverEntry->Info.FilePath)) {
    return EFI_UNSUPPORTED;
  }

  ContextData = GetMemoryProfileContext ();
  if (ContextData == NULL) {
    return EFI_UNSUPPORTED;
  }

  DriverInfoData = NULL;
  FileName       = GetFileNameFromFilePath (DriverEntry->Info.FilePath);
  ImageAddress   = DriverEntry->ImageContext.ImageAddress;
  if ((DriverEntry->ImageContext.EntryPoint < ImageAddress) || (DriverEntry->ImageContext.EntryPoint >= (ImageAddress + DriverEntry->ImageContext.ImageSize))) {
    //
    // If the EntryPoint is not in the range of image buffer, it should come from emulation environment.
    // So patch ImageAddress here to align the EntryPoint.
    //
    Status = InternalPeCoffGetEntryPoint ((VOID *)(UINTN)ImageAddress, &EntryPointInImage);
    ASSERT_EFI_ERROR (Status);
    ImageAddress = ImageAddress + (UINTN)DriverEntry->ImageContext.EntryPoint - (UINTN)EntryPointInImage;
  }

  if (FileName != NULL) {
    DriverInfoData = GetMemoryProfileDriverInfoByFileNameAndAddress (ContextData, FileName, ImageAddress);
  }

  if (DriverInfoData == NULL) {
    DriverInfoData = GetMemoryProfileDriverInfoFromAddress (ContextData, ImageAddress);
  }

  if (DriverInfoData == NULL) {
    return EFI_NOT_FOUND;
  }

  ContextData->Context.TotalImageSize -= DriverInfoData->DriverInfo.ImageSize;

  // Keep the ImageBase for RVA calculation in Application.
  // DriverInfoData->DriverInfo.ImageBase = 0;
  DriverInfoData->DriverInfo.ImageSize = 0;

  if (DriverInfoData->DriverInfo.PeakUsage == 0) {
    ContextData->Context.ImageCount--;
    RemoveEntryList (&DriverInfoData->Link);
    //
    // Use CoreInternalFreePool() that will not update profile for this FreePool action.
    //
    CoreInternalFreePool (DriverInfoData, NULL);
  }

  return EFI_SUCCESS;
}

/**
  Return if this memory type needs to be recorded into memory profile.
  If BIOS memory type (0 ~ EfiMaxMemoryType - 1), it checks bit (1 << MemoryType).
  If OS memory type (0x80000000 ~ 0xFFFFFFFF), it checks bit63 - 0x8000000000000000.
  If OEM memory type (0x70000000 ~ 0x7FFFFFFF), it checks bit62 - 0x4000000000000000.

  @param MemoryType     Memory type.

  @retval TRUE          This memory type need to be recorded.
  @retval FALSE         This memory type need not to be recorded.

**/
BOOLEAN
CoreNeedRecordProfile (
  IN EFI_MEMORY_TYPE  MemoryType
  )
{
  UINT64  TestBit;

  if ((UINT32)MemoryType >= MEMORY_TYPE_OS_RESERVED_MIN) {
    TestBit = BIT63;
  } else if ((UINT32)MemoryType >= MEMORY_TYPE_OEM_RESERVED_MIN) {
    TestBit = BIT62;
  } else {
    TestBit = LShiftU64 (1, MemoryType);
  }

  if ((PcdGet64 (PcdMemoryProfileMemoryType) & TestBit) != 0) {
    return TRUE;
  } else {
    return FALSE;
  }
}

/**
  Convert EFI memory type to profile memory index. The rule is:
  If BIOS memory type (0 ~ EfiMaxMemoryType - 1), ProfileMemoryIndex = MemoryType.
  If OS memory type (0x80000000 ~ 0xFFFFFFFF), ProfileMemoryIndex = EfiMaxMemoryType.
  If OEM memory type (0x70000000 ~ 0x7FFFFFFF), ProfileMemoryIndex = EfiMaxMemoryType + 1.

  @param MemoryType     Memory type.

  @return Profile memory index.

**/
UINTN
GetProfileMemoryIndex (
  IN EFI_MEMORY_TYPE  MemoryType
  )
{
  if ((UINT32)MemoryType >= MEMORY_TYPE_OS_RESERVED_MIN) {
    return EfiMaxMemoryType;
  } else if ((UINT32)MemoryType >= MEMORY_TYPE_OEM_RESERVED_MIN) {
    return EfiMaxMemoryType + 1;
  } else {
    return MemoryType;
  }
}

/**
  Update memory profile Allocate information.

  @param CallerAddress  Address of caller who call Allocate.
  @param Action         This Allocate action.
  @param MemoryType     Memory type.
  @param Size           Buffer size.
  @param Buffer         Buffer address.
  @param ActionString   String for memory profile action.

  @return EFI_SUCCESS           Memory profile is updated.
  @return EFI_UNSUPPORTED       Memory profile is unsupported,
                                or memory profile for the image is not required.
  @return EFI_OUT_OF_RESOURCES  No enough resource to update memory profile for allocate action.

**/
EFI_STATUS
CoreUpdateProfileAllocate (
  IN PHYSICAL_ADDRESS       CallerAddress,
  IN MEMORY_PROFILE_ACTION  Action,
  IN EFI_MEMORY_TYPE        MemoryType,
  IN UINTN                  Size,
  IN VOID                   *Buffer,
  IN CHAR8                  *ActionString OPTIONAL
  )
{
  EFI_STATUS                       Status;
  MEMORY_PROFILE_CONTEXT           *Context;
  MEMORY_PROFILE_DRIVER_INFO       *DriverInfo;
  MEMORY_PROFILE_ALLOC_INFO        *AllocInfo;
  MEMORY_PROFILE_CONTEXT_DATA      *ContextData;
  MEMORY_PROFILE_DRIVER_INFO_DATA  *DriverInfoData;
  MEMORY_PROFILE_ALLOC_INFO_DATA   *AllocInfoData;
  UINTN                            ProfileMemoryIndex;
  MEMORY_PROFILE_ACTION            BasicAction;
  UINTN                            ActionStringSize;
  UINTN                            ActionStringOccupiedSize;

  BasicAction = Action & MEMORY_PROFILE_ACTION_BASIC_MASK;

  ContextData = GetMemoryProfileContext ();
  if (ContextData == NULL) {
    return EFI_UNSUPPORTED;
  }

  DriverInfoData = GetMemoryProfileDriverInfoFromAddress (ContextData, CallerAddress);
  if (DriverInfoData == NULL) {
    return EFI_UNSUPPORTED;
  }

  ActionStringSize         = 0;
  ActionStringOccupiedSize = 0;
  if (ActionString != NULL) {
    ActionStringSize         = AsciiStrSize (ActionString);
    ActionStringOccupiedSize = GET_OCCUPIED_SIZE (ActionStringSize, sizeof (UINT64));
  }

  //
  // Use CoreInternalAllocatePool() that will not update profile for this AllocatePool action.
  //
  AllocInfoData = NULL;
  Status        = CoreInternalAllocatePool (
                    EfiBootServicesData,
                    sizeof (*AllocInfoData) + ActionStringSize,
                    (VOID **)&AllocInfoData
                    );
  if (EFI_ERROR (Status)) {
    return EFI_OUT_OF_RESOURCES;
  }

  ASSERT (AllocInfoData != NULL);

  //
  // Only update SequenceCount if and only if it is basic action.
  //
  if (Action == BasicAction) {
    ContextData->Context.SequenceCount++;
  }

  AllocInfo                   = &AllocInfoData->AllocInfo;
  AllocInfoData->Signature    = MEMORY_PROFILE_ALLOC_INFO_SIGNATURE;
  AllocInfo->Header.Signature = MEMORY_PROFILE_ALLOC_INFO_SIGNATURE;
  AllocInfo->Header.Length    = (UINT16)(sizeof (MEMORY_PROFILE_ALLOC_INFO) + ActionStringOccupiedSize);
  AllocInfo->Header.Revision  = MEMORY_PROFILE_ALLOC_INFO_REVISION;
  AllocInfo->CallerAddress    = CallerAddress;
  AllocInfo->SequenceId       = ContextData->Context.SequenceCount;
  AllocInfo->Action           = Action;
  AllocInfo->MemoryType       = MemoryType;
  AllocInfo->Buffer           = (PHYSICAL_ADDRESS)(UINTN)Buffer;
  AllocInfo->Size             = Size;
  if (ActionString != NULL) {
    AllocInfo->ActionStringOffset = (UINT16)sizeof (MEMORY_PROFILE_ALLOC_INFO);
    AllocInfoData->ActionString   = (CHAR8 *)(AllocInfoData + 1);
    CopyMem (AllocInfoData->ActionString, ActionString, ActionStringSize);
  } else {
    AllocInfo->ActionStringOffset = 0;
    AllocInfoData->ActionString   = NULL;
  }

  InsertTailList (DriverInfoData->AllocInfoList, &AllocInfoData->Link);

  Context    = &ContextData->Context;
  DriverInfo = &DriverInfoData->DriverInfo;
  DriverInfo->AllocRecordCount++;

  //
  // Update summary if and only if it is basic action.
  //
  if (Action == BasicAction) {
    ProfileMemoryIndex = GetProfileMemoryIndex (MemoryType);

    DriverInfo->CurrentUsage += Size;
    if (DriverInfo->PeakUsage < DriverInfo->CurrentUsage) {
      DriverInfo->PeakUsage = DriverInfo->CurrentUsage;
    }

    DriverInfo->CurrentUsageByType[ProfileMemoryIndex] += Size;
    if (DriverInfo->PeakUsageByType[ProfileMemoryIndex] < DriverInfo->CurrentUsageByType[ProfileMemoryIndex]) {
      DriverInfo->PeakUsageByType[ProfileMemoryIndex] = DriverInfo->CurrentUsageByType[ProfileMemoryIndex];
    }

    Context->CurrentTotalUsage += Size;
    if (Context->PeakTotalUsage < Context->CurrentTotalUsage) {
      Context->PeakTotalUsage = Context->CurrentTotalUsage;
    }

    Context->CurrentTotalUsageByType[ProfileMemoryIndex] += Size;
    if (Context->PeakTotalUsageByType[ProfileMemoryIndex] < Context->CurrentTotalUsageByType[ProfileMemoryIndex]) {
      Context->PeakTotalUsageByType[ProfileMemoryIndex] = Context->CurrentTotalUsageByType[ProfileMemoryIndex];
    }
  }

  return EFI_SUCCESS;
}

/**
  Get memory profile alloc info from memory profile.

  @param DriverInfoData     Driver info.
  @param BasicAction        This Free basic action.
  @param Size               Buffer size.
  @param Buffer             Buffer address.

  @return Pointer to memory profile alloc info.

**/
MEMORY_PROFILE_ALLOC_INFO_DATA *
GetMemoryProfileAllocInfoFromAddress (
  IN MEMORY_PROFILE_DRIVER_INFO_DATA  *DriverInfoData,
  IN MEMORY_PROFILE_ACTION            BasicAction,
  IN UINTN                            Size,
  IN VOID                             *Buffer
  )
{
  LIST_ENTRY                      *AllocInfoList;
  LIST_ENTRY                      *AllocLink;
  MEMORY_PROFILE_ALLOC_INFO       *AllocInfo;
  MEMORY_PROFILE_ALLOC_INFO_DATA  *AllocInfoData;

  AllocInfoList = DriverInfoData->AllocInfoList;

  for (AllocLink = AllocInfoList->ForwardLink;
       AllocLink != AllocInfoList;
       AllocLink = AllocLink->ForwardLink)
  {
    AllocInfoData = CR (
                      AllocLink,
                      MEMORY_PROFILE_ALLOC_INFO_DATA,
                      Link,
                      MEMORY_PROFILE_ALLOC_INFO_SIGNATURE
                      );
    AllocInfo = &AllocInfoData->AllocInfo;
    if ((AllocInfo->Action & MEMORY_PROFILE_ACTION_BASIC_MASK) != BasicAction) {
      continue;
    }

    switch (BasicAction) {
      case MemoryProfileActionAllocatePages:
        if ((AllocInfo->Buffer <= (PHYSICAL_ADDRESS)(UINTN)Buffer) &&
            ((AllocInfo->Buffer + AllocInfo->Size) >= ((PHYSICAL_ADDRESS)(UINTN)Buffer + Size)))
        {
          return AllocInfoData;
        }

        break;
      case MemoryProfileActionAllocatePool:
        if (AllocInfo->Buffer == (PHYSICAL_ADDRESS)(UINTN)Buffer) {
          return AllocInfoData;
        }

        break;
      default:
        ASSERT (FALSE);
        break;
    }
  }

  return NULL;
}

/**
  Update memory profile Free information.

  @param CallerAddress  Address of caller who call Free.
  @param Action         This Free action.
  @param Size           Buffer size.
  @param Buffer         Buffer address.

  @return EFI_SUCCESS           Memory profile is updated.
  @return EFI_UNSUPPORTED       Memory profile is unsupported.
  @return EFI_NOT_FOUND         No matched allocate info found for free action.

**/
EFI_STATUS
CoreUpdateProfileFree (
  IN PHYSICAL_ADDRESS       CallerAddress,
  IN MEMORY_PROFILE_ACTION  Action,
  IN UINTN                  Size,
  IN VOID                   *Buffer
  )
{
  MEMORY_PROFILE_CONTEXT           *Context;
  MEMORY_PROFILE_DRIVER_INFO       *DriverInfo;
  MEMORY_PROFILE_ALLOC_INFO        *AllocInfo;
  MEMORY_PROFILE_CONTEXT_DATA      *ContextData;
  MEMORY_PROFILE_DRIVER_INFO_DATA  *DriverInfoData;
  LIST_ENTRY                       *DriverLink;
  LIST_ENTRY                       *DriverInfoList;
  MEMORY_PROFILE_DRIVER_INFO_DATA  *ThisDriverInfoData;
  MEMORY_PROFILE_ALLOC_INFO_DATA   *AllocInfoData;
  UINTN                            ProfileMemoryIndex;
  MEMORY_PROFILE_ACTION            BasicAction;
  BOOLEAN                          Found;

  BasicAction = Action & MEMORY_PROFILE_ACTION_BASIC_MASK;

  ContextData = GetMemoryProfileContext ();
  if (ContextData == NULL) {
    return EFI_UNSUPPORTED;
  }

  DriverInfoData = GetMemoryProfileDriverInfoFromAddress (ContextData, CallerAddress);

  //
  // Do not return if DriverInfoData == NULL here,
  // because driver A might free memory allocated by driver B.
  //

  //
  // Need use do-while loop to find all possible records,
  // because one address might be recorded multiple times.
  //
  Found         = FALSE;
  AllocInfoData = NULL;
  do {
    if (DriverInfoData != NULL) {
      switch (BasicAction) {
        case MemoryProfileActionFreePages:
          AllocInfoData = GetMemoryProfileAllocInfoFromAddress (DriverInfoData, MemoryProfileActionAllocatePages, Size, Buffer);
          break;
        case MemoryProfileActionFreePool:
          AllocInfoData = GetMemoryProfileAllocInfoFromAddress (DriverInfoData, MemoryProfileActionAllocatePool, 0, Buffer);
          break;
        default:
          ASSERT (FALSE);
          AllocInfoData = NULL;
          break;
      }
    }

    if (AllocInfoData == NULL) {
      //
      // Legal case, because driver A might free memory allocated by driver B, by some protocol.
      //
      DriverInfoList = ContextData->DriverInfoList;

      for (DriverLink = DriverInfoList->ForwardLink;
           DriverLink != DriverInfoList;
           DriverLink = DriverLink->ForwardLink)
      {
        ThisDriverInfoData = CR (
                               DriverLink,
                               MEMORY_PROFILE_DRIVER_INFO_DATA,
                               Link,
                               MEMORY_PROFILE_DRIVER_INFO_SIGNATURE
                               );
        switch (BasicAction) {
          case MemoryProfileActionFreePages:
            AllocInfoData = GetMemoryProfileAllocInfoFromAddress (ThisDriverInfoData, MemoryProfileActionAllocatePages, Size, Buffer);
            break;
          case MemoryProfileActionFreePool:
            AllocInfoData = GetMemoryProfileAllocInfoFromAddress (ThisDriverInfoData, MemoryProfileActionAllocatePool, 0, Buffer);
            break;
          default:
            ASSERT (FALSE);
            AllocInfoData = NULL;
            break;
        }

        if (AllocInfoData != NULL) {
          DriverInfoData = ThisDriverInfoData;
          break;
        }
      }

      if (AllocInfoData == NULL) {
        //
        // If (!Found), no matched allocate info is found for this free action.
        // It is because the specified memory type allocate actions have been filtered by
        // CoreNeedRecordProfile(), but free actions may have no memory type information,
        // they can not be filtered by CoreNeedRecordProfile(). Then, they will be
        // filtered here.
        //
        // If (Found), it is normal exit path.
        return (Found ? EFI_SUCCESS : EFI_NOT_FOUND);
      }
    }

    if ((DriverInfoData == NULL) || (AllocInfoData == NULL)) {
      ASSERT (DriverInfoData != NULL);
      ASSERT (AllocInfoData != NULL);
      return EFI_NOT_FOUND;
    }

    Found = TRUE;

    Context    = &ContextData->Context;
    DriverInfo = &DriverInfoData->DriverInfo;
    AllocInfo  = &AllocInfoData->AllocInfo;

    DriverInfo->AllocRecordCount--;
    //
    // Update summary if and only if it is basic action.
    //
    if (AllocInfo->Action == (AllocInfo->Action & MEMORY_PROFILE_ACTION_BASIC_MASK)) {
      ProfileMemoryIndex = GetProfileMemoryIndex (AllocInfo->MemoryType);

      Context->CurrentTotalUsage                           -= AllocInfo->Size;
      Context->CurrentTotalUsageByType[ProfileMemoryIndex] -= AllocInfo->Size;

      DriverInfo->CurrentUsage                           -= AllocInfo->Size;
      DriverInfo->CurrentUsageByType[ProfileMemoryIndex] -= AllocInfo->Size;
    }

    RemoveEntryList (&AllocInfoData->Link);

    if (BasicAction == MemoryProfileActionFreePages) {
      if (AllocInfo->Buffer != (PHYSICAL_ADDRESS)(UINTN)Buffer) {
        CoreUpdateProfileAllocate (
          AllocInfo->CallerAddress,
          AllocInfo->Action,
          AllocInfo->MemoryType,
          (UINTN)((PHYSICAL_ADDRESS)(UINTN)Buffer - AllocInfo->Buffer),
          (VOID *)(UINTN)AllocInfo->Buffer,
          AllocInfoData->ActionString
          );
      }

      if (AllocInfo->Buffer + AllocInfo->Size != ((PHYSICAL_ADDRESS)(UINTN)Buffer + Size)) {
        CoreUpdateProfileAllocate (
          AllocInfo->CallerAddress,
          AllocInfo->Action,
          AllocInfo->MemoryType,
          (UINTN)((AllocInfo->Buffer + AllocInfo->Size) - ((PHYSICAL_ADDRESS)(UINTN)Buffer + Size)),
          (VOID *)((UINTN)Buffer + Size),
          AllocInfoData->ActionString
          );
      }
    }

    //
    // Use CoreInternalFreePool() that will not update profile for this FreePool action.
    //
    CoreInternalFreePool (AllocInfoData, NULL);
  } while (TRUE);
}

/**
  Update memory profile information.

  @param CallerAddress  Address of caller who call Allocate or Free.
  @param Action         This Allocate or Free action.
  @param MemoryType     Memory type.
                        EfiMaxMemoryType means the MemoryType is unknown.
  @param Size           Buffer size.
  @param Buffer         Buffer address.
  @param ActionString   String for memory profile action.
                        Only needed for user defined allocate action.

  @return EFI_SUCCESS           Memory profile is updated.
  @return EFI_UNSUPPORTED       Memory profile is unsupported,
                                or memory profile for the image is not required,
                                or memory profile for the memory type is not required.
  @return EFI_ACCESS_DENIED     It is during memory profile data getting.
  @return EFI_ABORTED           Memory profile recording is not enabled.
  @return EFI_OUT_OF_RESOURCES  No enough resource to update memory profile for allocate action.
  @return EFI_NOT_FOUND         No matched allocate info found for free action.

**/
EFI_STATUS
EFIAPI
CoreUpdateProfile (
  IN PHYSICAL_ADDRESS       CallerAddress,
  IN MEMORY_PROFILE_ACTION  Action,
  IN EFI_MEMORY_TYPE        MemoryType,
  IN UINTN                  Size,       // Valid for AllocatePages/FreePages/AllocatePool
  IN VOID                   *Buffer,
  IN CHAR8                  *ActionString OPTIONAL
  )
{
  EFI_STATUS                   Status;
  MEMORY_PROFILE_CONTEXT_DATA  *ContextData;
  MEMORY_PROFILE_ACTION        BasicAction;

  if (!IS_UEFI_MEMORY_PROFILE_ENABLED) {
    return EFI_UNSUPPORTED;
  }

  if (mMemoryProfileGettingStatus) {
    return EFI_ACCESS_DENIED;
  }

  if (!mMemoryProfileRecordingEnable) {
    return EFI_ABORTED;
  }

  //
  // Get the basic action to know how to process the record
  //
  BasicAction = Action & MEMORY_PROFILE_ACTION_BASIC_MASK;

  //
  // EfiMaxMemoryType means the MemoryType is unknown.
  //
  if (MemoryType != EfiMaxMemoryType) {
    //
    // Only record limited MemoryType.
    //
    if (!CoreNeedRecordProfile (MemoryType)) {
      return EFI_UNSUPPORTED;
    }
  }

  ContextData = GetMemoryProfileContext ();
  if (ContextData == NULL) {
    return EFI_UNSUPPORTED;
  }

  CoreAcquireMemoryProfileLock ();
  switch (BasicAction) {
    case MemoryProfileActionAllocatePages:
      Status = CoreUpdateProfileAllocate (CallerAddress, Action, MemoryType, Size, Buffer, ActionString);
      break;
    case MemoryProfileActionFreePages:
      Status = CoreUpdateProfileFree (CallerAddress, Action, Size, Buffer);
      break;
    case MemoryProfileActionAllocatePool:
      Status = CoreUpdateProfileAllocate (CallerAddress, Action, MemoryType, Size, Buffer, ActionString);
      break;
    case MemoryProfileActionFreePool:
      Status = CoreUpdateProfileFree (CallerAddress, Action, 0, Buffer);
      break;
    default:
      ASSERT (FALSE);
      Status = EFI_UNSUPPORTED;
      break;
  }

  CoreReleaseMemoryProfileLock ();

  return Status;
}

////////////////////

/**
  Get memory profile data size.

  @return Memory profile data size.

**/
UINTN
MemoryProfileGetDataSize (
  VOID
  )
{
  MEMORY_PROFILE_CONTEXT_DATA      *ContextData;
  MEMORY_PROFILE_DRIVER_INFO_DATA  *DriverInfoData;
  MEMORY_PROFILE_ALLOC_INFO_DATA   *AllocInfoData;
  LIST_ENTRY                       *DriverInfoList;
  LIST_ENTRY                       *DriverLink;
  LIST_ENTRY                       *AllocInfoList;
  LIST_ENTRY                       *AllocLink;
  UINTN                            TotalSize;

  ContextData = GetMemoryProfileContext ();
  if (ContextData == NULL) {
    return 0;
  }

  TotalSize = sizeof (MEMORY_PROFILE_CONTEXT);

  DriverInfoList = ContextData->DriverInfoList;
  for (DriverLink = DriverInfoList->ForwardLink;
       DriverLink != DriverInfoList;
       DriverLink = DriverLink->ForwardLink)
  {
    DriverInfoData = CR (
                       DriverLink,
                       MEMORY_PROFILE_DRIVER_INFO_DATA,
                       Link,
                       MEMORY_PROFILE_DRIVER_INFO_SIGNATURE
                       );
    TotalSize += DriverInfoData->DriverInfo.Header.Length;

    AllocInfoList = DriverInfoData->AllocInfoList;
    for (AllocLink = AllocInfoList->ForwardLink;
         AllocLink != AllocInfoList;
         AllocLink = AllocLink->ForwardLink)
    {
      AllocInfoData = CR (
                        AllocLink,
                        MEMORY_PROFILE_ALLOC_INFO_DATA,
                        Link,
                        MEMORY_PROFILE_ALLOC_INFO_SIGNATURE
                        );
      TotalSize += AllocInfoData->AllocInfo.Header.Length;
    }
  }

  return TotalSize;
}

/**
  Copy memory profile data.

  @param ProfileBuffer  The buffer to hold memory profile data.

**/
VOID
MemoryProfileCopyData (
  IN VOID  *ProfileBuffer
  )
{
  MEMORY_PROFILE_CONTEXT           *Context;
  MEMORY_PROFILE_DRIVER_INFO       *DriverInfo;
  MEMORY_PROFILE_ALLOC_INFO        *AllocInfo;
  MEMORY_PROFILE_CONTEXT_DATA      *ContextData;
  MEMORY_PROFILE_DRIVER_INFO_DATA  *DriverInfoData;
  MEMORY_PROFILE_ALLOC_INFO_DATA   *AllocInfoData;
  LIST_ENTRY                       *DriverInfoList;
  LIST_ENTRY                       *DriverLink;
  LIST_ENTRY                       *AllocInfoList;
  LIST_ENTRY                       *AllocLink;
  UINTN                            PdbSize;
  UINTN                            ActionStringSize;

  ContextData = GetMemoryProfileContext ();
  if (ContextData == NULL) {
    return;
  }

  Context = ProfileBuffer;
  CopyMem (Context, &ContextData->Context, sizeof (MEMORY_PROFILE_CONTEXT));
  DriverInfo = (MEMORY_PROFILE_DRIVER_INFO *)(Context + 1);

  DriverInfoList = ContextData->DriverInfoList;
  for (DriverLink = DriverInfoList->ForwardLink;
       DriverLink != DriverInfoList;
       DriverLink = DriverLink->ForwardLink)
  {
    DriverInfoData = CR (
                       DriverLink,
                       MEMORY_PROFILE_DRIVER_INFO_DATA,
                       Link,
                       MEMORY_PROFILE_DRIVER_INFO_SIGNATURE
                       );
    CopyMem (DriverInfo, &DriverInfoData->DriverInfo, sizeof (MEMORY_PROFILE_DRIVER_INFO));
    if (DriverInfo->PdbStringOffset != 0) {
      PdbSize = AsciiStrSize (DriverInfoData->PdbString);
      CopyMem ((VOID *)((UINTN)DriverInfo + DriverInfo->PdbStringOffset), DriverInfoData->PdbString, PdbSize);
    }

    AllocInfo = (MEMORY_PROFILE_ALLOC_INFO *)((UINTN)DriverInfo + DriverInfo->Header.Length);

    AllocInfoList = DriverInfoData->AllocInfoList;
    for (AllocLink = AllocInfoList->ForwardLink;
         AllocLink != AllocInfoList;
         AllocLink = AllocLink->ForwardLink)
    {
      AllocInfoData = CR (
                        AllocLink,
                        MEMORY_PROFILE_ALLOC_INFO_DATA,
                        Link,
                        MEMORY_PROFILE_ALLOC_INFO_SIGNATURE
                        );
      CopyMem (AllocInfo, &AllocInfoData->AllocInfo, sizeof (MEMORY_PROFILE_ALLOC_INFO));
      if (AllocInfo->ActionStringOffset != 0) {
        ActionStringSize = AsciiStrSize (AllocInfoData->ActionString);
        CopyMem ((VOID *)((UINTN)AllocInfo + AllocInfo->ActionStringOffset), AllocInfoData->ActionString, ActionStringSize);
      }

      AllocInfo = (MEMORY_PROFILE_ALLOC_INFO *)((UINTN)AllocInfo + AllocInfo->Header.Length);
    }

    DriverInfo = (MEMORY_PROFILE_DRIVER_INFO *)AllocInfo;
  }
}

/**
  Get memory profile data.

  @param[in]      This              The EDKII_MEMORY_PROFILE_PROTOCOL instance.
  @param[in, out] ProfileSize       On entry, points to the size in bytes of the ProfileBuffer.
                                    On return, points to the size of the data returned in ProfileBuffer.
  @param[out]     ProfileBuffer     Profile buffer.

  @return EFI_SUCCESS               Get the memory profile data successfully.
  @return EFI_UNSUPPORTED           Memory profile is unsupported.
  @return EFI_BUFFER_TO_SMALL       The ProfileSize is too small for the resulting data.
                                    ProfileSize is updated with the size required.

**/
EFI_STATUS
EFIAPI
ProfileProtocolGetData (
  IN     EDKII_MEMORY_PROFILE_PROTOCOL  *This,
  IN OUT UINT64                         *ProfileSize,
  OUT VOID                              *ProfileBuffer
  )
{
  UINTN                        Size;
  MEMORY_PROFILE_CONTEXT_DATA  *ContextData;
  BOOLEAN                      MemoryProfileGettingStatus;

  ContextData = GetMemoryProfileContext ();
  if (ContextData == NULL) {
    return EFI_UNSUPPORTED;
  }

  MemoryProfileGettingStatus  = mMemoryProfileGettingStatus;
  mMemoryProfileGettingStatus = TRUE;

  Size = MemoryProfileGetDataSize ();

  if (*ProfileSize < Size) {
    *ProfileSize                = Size;
    mMemoryProfileGettingStatus = MemoryProfileGettingStatus;
    return EFI_BUFFER_TOO_SMALL;
  }

  *ProfileSize = Size;
  MemoryProfileCopyData (ProfileBuffer);

  mMemoryProfileGettingStatus = MemoryProfileGettingStatus;
  return EFI_SUCCESS;
}

/**
  Register image to memory profile.

  @param[in] This               The EDKII_MEMORY_PROFILE_PROTOCOL instance.
  @param[in] FilePath           File path of the image.
  @param[in] ImageBase          Image base address.
  @param[in] ImageSize          Image size.
  @param[in] FileType           File type of the image.

  @return EFI_SUCCESS           Register successfully.
  @return EFI_UNSUPPORTED       Memory profile is unsupported,
                                or memory profile for the image is not required.
  @return EFI_OUT_OF_RESOURCES  No enough resource for this register.

**/
EFI_STATUS
EFIAPI
ProfileProtocolRegisterImage (
  IN EDKII_MEMORY_PROFILE_PROTOCOL  *This,
  IN EFI_DEVICE_PATH_PROTOCOL       *FilePath,
  IN PHYSICAL_ADDRESS               ImageBase,
  IN UINT64                         ImageSize,
  IN EFI_FV_FILETYPE                FileType
  )
{
  EFI_STATUS                 Status;
  LOADED_IMAGE_PRIVATE_DATA  DriverEntry;
  VOID                       *EntryPointInImage;

  ZeroMem (&DriverEntry, sizeof (DriverEntry));
  DriverEntry.Info.FilePath             = FilePath;
  DriverEntry.ImageContext.ImageAddress = ImageBase;
  DriverEntry.ImageContext.ImageSize    = ImageSize;
  Status                                = InternalPeCoffGetEntryPoint ((VOID *)(UINTN)ImageBase, &EntryPointInImage);
  ASSERT_EFI_ERROR (Status);
  DriverEntry.ImageContext.EntryPoint = (PHYSICAL_ADDRESS)(UINTN)EntryPointInImage;
  DriverEntry.ImageContext.ImageType  = InternalPeCoffGetSubsystem ((VOID *)(UINTN)ImageBase);

  return RegisterMemoryProfileImage (&DriverEntry, FileType);
}

/**
  Unregister image from memory profile.

  @param[in] This               The EDKII_MEMORY_PROFILE_PROTOCOL instance.
  @param[in] FilePath           File path of the image.
  @param[in] ImageBase          Image base address.
  @param[in] ImageSize          Image size.

  @return EFI_SUCCESS           Unregister successfully.
  @return EFI_UNSUPPORTED       Memory profile is unsupported,
                                or memory profile for the image is not required.
  @return EFI_NOT_FOUND         The image is not found.

**/
EFI_STATUS
EFIAPI
ProfileProtocolUnregisterImage (
  IN EDKII_MEMORY_PROFILE_PROTOCOL  *This,
  IN EFI_DEVICE_PATH_PROTOCOL       *FilePath,
  IN PHYSICAL_ADDRESS               ImageBase,
  IN UINT64                         ImageSize
  )
{
  EFI_STATUS                 Status;
  LOADED_IMAGE_PRIVATE_DATA  DriverEntry;
  VOID                       *EntryPointInImage;

  ZeroMem (&DriverEntry, sizeof (DriverEntry));
  DriverEntry.Info.FilePath             = FilePath;
  DriverEntry.ImageContext.ImageAddress = ImageBase;
  DriverEntry.ImageContext.ImageSize    = ImageSize;
  Status                                = InternalPeCoffGetEntryPoint ((VOID *)(UINTN)ImageBase, &EntryPointInImage);
  ASSERT_EFI_ERROR (Status);
  DriverEntry.ImageContext.EntryPoint = (PHYSICAL_ADDRESS)(UINTN)EntryPointInImage;

  return UnregisterMemoryProfileImage (&DriverEntry);
}

/**
  Get memory profile recording state.

  @param[in]  This              The EDKII_MEMORY_PROFILE_PROTOCOL instance.
  @param[out] RecordingState    Recording state.

  @return EFI_SUCCESS           Memory profile recording state is returned.
  @return EFI_UNSUPPORTED       Memory profile is unsupported.
  @return EFI_INVALID_PARAMETER RecordingState is NULL.

**/
EFI_STATUS
EFIAPI
ProfileProtocolGetRecordingState (
  IN EDKII_MEMORY_PROFILE_PROTOCOL  *This,
  OUT BOOLEAN                       *RecordingState
  )
{
  MEMORY_PROFILE_CONTEXT_DATA  *ContextData;

  ContextData = GetMemoryProfileContext ();
  if (ContextData == NULL) {
    return EFI_UNSUPPORTED;
  }

  if (RecordingState == NULL) {
    return EFI_INVALID_PARAMETER;
  }

  *RecordingState = mMemoryProfileRecordingEnable;
  return EFI_SUCCESS;
}

/**
  Set memory profile recording state.

  @param[in] This               The EDKII_MEMORY_PROFILE_PROTOCOL instance.
  @param[in] RecordingState     Recording state.

  @return EFI_SUCCESS           Set memory profile recording state successfully.
  @return EFI_UNSUPPORTED       Memory profile is unsupported.

**/
EFI_STATUS
EFIAPI
ProfileProtocolSetRecordingState (
  IN EDKII_MEMORY_PROFILE_PROTOCOL  *This,
  IN BOOLEAN                        RecordingState
  )
{
  MEMORY_PROFILE_CONTEXT_DATA  *ContextData;

  ContextData = GetMemoryProfileContext ();
  if (ContextData == NULL) {
    return EFI_UNSUPPORTED;
  }

  mMemoryProfileRecordingEnable = RecordingState;
  return EFI_SUCCESS;
}

/**
  Record memory profile of multilevel caller.

  @param[in] This               The EDKII_MEMORY_PROFILE_PROTOCOL instance.
  @param[in] CallerAddress      Address of caller.
  @param[in] Action             Memory profile action.
  @param[in] MemoryType         Memory type.
                                EfiMaxMemoryType means the MemoryType is unknown.
  @param[in] Buffer             Buffer address.
  @param[in] Size               Buffer size.
  @param[in] ActionString       String for memory profile action.
                                Only needed for user defined allocate action.

  @return EFI_SUCCESS           Memory profile is updated.
  @return EFI_UNSUPPORTED       Memory profile is unsupported,
                                or memory profile for the image is not required,
                                or memory profile for the memory type is not required.
  @return EFI_ACCESS_DENIED     It is during memory profile data getting.
  @return EFI_ABORTED           Memory profile recording is not enabled.
  @return EFI_OUT_OF_RESOURCES  No enough resource to update memory profile for allocate action.
  @return EFI_NOT_FOUND         No matched allocate info found for free action.

**/
EFI_STATUS
EFIAPI
ProfileProtocolRecord (
  IN EDKII_MEMORY_PROFILE_PROTOCOL  *This,
  IN PHYSICAL_ADDRESS               CallerAddress,
  IN MEMORY_PROFILE_ACTION          Action,
  IN EFI_MEMORY_TYPE                MemoryType,
  IN VOID                           *Buffer,
  IN UINTN                          Size,
  IN CHAR8                          *ActionString OPTIONAL
  )
{
  return CoreUpdateProfile (CallerAddress, Action, MemoryType, Size, Buffer, ActionString);
}

////////////////////
