[edk2,v2,13/17] MdeModulePkg: implement NULL instance of MemoryAllocationLib library class

Message ID 20190114132758.24054-14-ard.biesheuvel@linaro.org
State New
Headers show
Series
  • implement standalone MM versions of the variable runtime drivers
Related show

Commit Message

Ard Biesheuvel Jan. 14, 2019, 1:27 p.m.
In order to permit MM_STANDALONE modules to be built without relying
on StandaloneMmPkg, provide a BASE type NULL implementation of
MemoryAllocationLib.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

---
 MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.inf |  38 ++
 MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.c   | 575 ++++++++++++++++++++
 MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.uni |  20 +
 3 files changed, 633 insertions(+)

-- 
2.20.1

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Comments

Zeng, Star Jan. 16, 2019, 5:09 a.m. | #1
On 2019/1/14 21:27, Ard Biesheuvel wrote:
> In order to permit MM_STANDALONE modules to be built without relying

> on StandaloneMmPkg, provide a BASE type NULL implementation of

> MemoryAllocationLib.

> 

> Contributed-under: TianoCore Contribution Agreement 1.1

> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

> ---

>   MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.inf |  38 ++

>   MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.c   | 575 ++++++++++++++++++++

>   MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.uni |  20 +

>   3 files changed, 633 insertions(+)

> 

> diff --git a/MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.inf b/MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.inf

> new file mode 100644

> index 000000000000..c231cd0e271b

> --- /dev/null

> +++ b/MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.inf

> @@ -0,0 +1,38 @@

> +## @file

> +# Null instance of Memory Allocation Library.

> +#

> +# Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>

> +# Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR>

> +#

> +#  This program and the accompanying materials

> +#  are licensed and made available under the terms and conditions of the BSD License

> +#  which accompanies this distribution. The full text of the license may be found at

> +#  http://opensource.org/licenses/bsd-license.php.

> +#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,

> +#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

> +#

> +#

> +##

> +

> +[Defines]

> +  INF_VERSION                    = 0x0001001B

> +  BASE_NAME                      = BaseMemoryAllocationLibNull

> +  MODULE_UNI_FILE                = BaseMemoryAllocationLibNull.uni

> +  FILE_GUID                      = fd56f5d6-f194-448f-be69-c0cbb0c281af

> +  MODULE_TYPE                    = BASE

> +  VERSION_STRING                 = 1.0

> +  LIBRARY_CLASS                  = MemoryAllocationLib

> +

> +

> +#

> +#  VALID_ARCHITECTURES           = IA32 X64 ARM AARCH64

> +#

> +

> +[Sources]

> +  BaseMemoryAllocationLibNull.c

> +

> +[Packages]

> +  MdePkg/MdePkg.dec

> +

> +[LibraryClasses]

> +  DebugLib

> diff --git a/MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.c b/MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.c

> new file mode 100644

> index 000000000000..16812d3f9bb3

> --- /dev/null

> +++ b/MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.c

> @@ -0,0 +1,575 @@

> +/** @file

> +  DUmmy support routines for memory allocation


Should be "Dummy" here?

With it handled, Reviewed-by: Star Zeng <star.zeng@intel.com>.

Thanks,
Star

> +

> +  Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>

> +  Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR>

> +  This program and the accompanying materials

> +  are licensed and made available under the terms and conditions of the BSD License

> +  which accompanies this distribution.  The full text of the license may be found at

> +  http://opensource.org/licenses/bsd-license.php.

> +

> +  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,

> +  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

> +

> +**/

> +

> +

> +#include <Uefi/UefiBaseType.h>

> +

> +#include <Library/DebugLib.h>

> +#include <Library/MemoryAllocationLib.h>

> +

> +

> +/**

> +  Allocates one or more 4KB pages of type EfiBootServicesData.

> +

> +  Allocates the number of 4KB pages of type EfiBootServicesData and returns a pointer to the

> +  allocated buffer.  The buffer returned is aligned on a 4KB boundary.  If Pages is 0, then NULL

> +  is returned.  If there is not enough memory remaining to satisfy the request, then NULL is

> +  returned.

> +

> +  @param  Pages                 The number of 4 KB pages to allocate.

> +

> +  @return A pointer to the allocated buffer or NULL if allocation fails.

> +

> +**/

> +VOID *

> +EFIAPI

> +AllocatePages (

> +  IN UINTN  Pages

> +  )

> +{

> +  ASSERT (FALSE);

> +  return NULL;

> +}

> +

> +/**

> +  Allocates one or more 4KB pages of type EfiRuntimeServicesData.

> +

> +  Allocates the number of 4KB pages of type EfiRuntimeServicesData and returns a pointer to the

> +  allocated buffer.  The buffer returned is aligned on a 4KB boundary.  If Pages is 0, then NULL

> +  is returned.  If there is not enough memory remaining to satisfy the request, then NULL is

> +  returned.

> +

> +  @param  Pages                 The number of 4 KB pages to allocate.

> +

> +  @return A pointer to the allocated buffer or NULL if allocation fails.

> +

> +**/

> +VOID *

> +EFIAPI

> +AllocateRuntimePages (

> +  IN UINTN  Pages

> +  )

> +{

> +  ASSERT (FALSE);

> +  return NULL;

> +}

> +

> +/**

> +  Allocates one or more 4KB pages of type EfiReservedMemoryType.

> +

> +  Allocates the number of 4KB pages of type EfiReservedMemoryType and returns a pointer to the

> +  allocated buffer.  The buffer returned is aligned on a 4KB boundary.  If Pages is 0, then NULL

> +  is returned.  If there is not enough memory remaining to satisfy the request, then NULL is

> +  returned.

> +

> +  @param  Pages                 The number of 4 KB pages to allocate.

> +

> +  @return A pointer to the allocated buffer or NULL if allocation fails.

> +

> +**/

> +VOID *

> +EFIAPI

> +AllocateReservedPages (

> +  IN UINTN  Pages

> +  )

> +{

> +  ASSERT (FALSE);

> +  return NULL;

> +}

> +

> +/**

> +  Frees one or more 4KB pages that were previously allocated with one of the page allocation

> +  functions in the Memory Allocation Library.

> +

> +  Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer.  Buffer

> +  must have been allocated on a previous call to the page allocation services of the Memory

> +  Allocation Library.  If it is not possible to free allocated pages, then this function will

> +  perform no actions.

> +

> +  If Buffer was not allocated with a page allocation function in the Memory Allocation Library,

> +  then ASSERT().

> +  If Pages is zero, then ASSERT().

> +

> +  @param  Buffer                The pointer to the buffer of pages to free.

> +  @param  Pages                 The number of 4 KB pages to free.

> +

> +**/

> +VOID

> +EFIAPI

> +FreePages (

> +  IN VOID   *Buffer,

> +  IN UINTN  Pages

> +  )

> +{

> +  ASSERT (FALSE);

> +}

> +

> +/**

> +  Allocates one or more 4KB pages of type EfiBootServicesData at a specified alignment.

> +

> +  Allocates the number of 4KB pages specified by Pages of type EfiBootServicesData with an

> +  alignment specified by Alignment.  The allocated buffer is returned.  If Pages is 0, then NULL is

> +  returned.  If there is not enough memory at the specified alignment remaining to satisfy the

> +  request, then NULL is returned.

> +

> +  If Alignment is not a power of two and Alignment is not zero, then ASSERT().

> +  If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().

> +

> +  @param  Pages                 The number of 4 KB pages to allocate.

> +  @param  Alignment             The requested alignment of the allocation.

> +                                Must be a power of two.

> +                                If Alignment is zero, then byte alignment is used.

> +

> +  @return A pointer to the allocated buffer or NULL if allocation fails.

> +

> +**/

> +VOID *

> +EFIAPI

> +AllocateAlignedPages (

> +  IN UINTN  Pages,

> +  IN UINTN  Alignment

> +  )

> +{

> +  ASSERT (FALSE);

> +  return NULL;

> +}

> +

> +/**

> +  Allocates one or more 4KB pages of type EfiRuntimeServicesData at a specified alignment.

> +

> +  Allocates the number of 4KB pages specified by Pages of type EfiRuntimeServicesData with an

> +  alignment specified by Alignment.  The allocated buffer is returned.  If Pages is 0, then NULL is

> +  returned.  If there is not enough memory at the specified alignment remaining to satisfy the

> +  request, then NULL is returned.

> +

> +  If Alignment is not a power of two and Alignment is not zero, then ASSERT().

> +  If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().

> +

> +  @param  Pages                 The number of 4 KB pages to allocate.

> +  @param  Alignment             The requested alignment of the allocation.

> +                                Must be a power of two.

> +                                If Alignment is zero, then byte alignment is used.

> +

> +  @return A pointer to the allocated buffer or NULL if allocation fails.

> +

> +**/

> +VOID *

> +EFIAPI

> +AllocateAlignedRuntimePages (

> +  IN UINTN  Pages,

> +  IN UINTN  Alignment

> +  )

> +{

> +  ASSERT (FALSE);

> +  return NULL;

> +}

> +

> +/**

> +  Allocates one or more 4KB pages of type EfiReservedMemoryType at a specified alignment.

> +

> +  Allocates the number of 4KB pages specified by Pages of type EfiReservedMemoryType with an

> +  alignment specified by Alignment.  The allocated buffer is returned.  If Pages is 0, then NULL is

> +  returned.  If there is not enough memory at the specified alignment remaining to satisfy the

> +  request, then NULL is returned.

> +

> +  If Alignment is not a power of two and Alignment is not zero, then ASSERT().

> +  If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().

> +

> +  @param  Pages                 The number of 4 KB pages to allocate.

> +  @param  Alignment             The requested alignment of the allocation.

> +                                Must be a power of two.

> +                                If Alignment is zero, then byte alignment is used.

> +

> +  @return A pointer to the allocated buffer or NULL if allocation fails.

> +

> +**/

> +VOID *

> +EFIAPI

> +AllocateAlignedReservedPages (

> +  IN UINTN  Pages,

> +  IN UINTN  Alignment

> +  )

> +{

> +  ASSERT (FALSE);

> +  return NULL;

> +}

> +

> +/**

> +  Frees one or more 4KB pages that were previously allocated with one of the aligned page

> +  allocation functions in the Memory Allocation Library.

> +

> +  Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer.  Buffer

> +  must have been allocated on a previous call to the aligned page allocation services of the Memory

> +  Allocation Library.  If it is not possible to free allocated pages, then this function will

> +  perform no actions.

> +

> +  If Buffer was not allocated with an aligned page allocation function in the Memory Allocation

> +  Library, then ASSERT().

> +  If Pages is zero, then ASSERT().

> +

> +  @param  Buffer                The pointer to the buffer of pages to free.

> +  @param  Pages                 The number of 4 KB pages to free.

> +

> +**/

> +VOID

> +EFIAPI

> +FreeAlignedPages (

> +  IN VOID   *Buffer,

> +  IN UINTN  Pages

> +  )

> +{

> +  ASSERT (FALSE);

> +}

> +

> +/**

> +  Allocates a buffer of type EfiBootServicesData.

> +

> +  Allocates the number bytes specified by AllocationSize of type EfiBootServicesData and returns a

> +  pointer to the allocated buffer.  If AllocationSize is 0, then a valid buffer of 0 size is

> +  returned.  If there is not enough memory remaining to satisfy the request, then NULL is returned.

> +

> +  @param  AllocationSize        The number of bytes to allocate.

> +

> +  @return A pointer to the allocated buffer or NULL if allocation fails.

> +

> +**/

> +VOID *

> +EFIAPI

> +AllocatePool (

> +  IN UINTN  AllocationSize

> +  )

> +{

> +  ASSERT (FALSE);

> +  return NULL;

> +}

> +

> +/**

> +  Allocates a buffer of type EfiRuntimeServicesData.

> +

> +  Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData and returns

> +  a pointer to the allocated buffer.  If AllocationSize is 0, then a valid buffer of 0 size is

> +  returned.  If there is not enough memory remaining to satisfy the request, then NULL is returned.

> +

> +  @param  AllocationSize        The number of bytes to allocate.

> +

> +  @return A pointer to the allocated buffer or NULL if allocation fails.

> +

> +**/

> +VOID *

> +EFIAPI

> +AllocateRuntimePool (

> +  IN UINTN  AllocationSize

> +  )

> +{

> +  ASSERT (FALSE);

> +  return NULL;

> +}

> +

> +/**

> +  Allocates a buffer of type EfiReservedMemoryType.

> +

> +  Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType and returns

> +  a pointer to the allocated buffer.  If AllocationSize is 0, then a valid buffer of 0 size is

> +  returned.  If there is not enough memory remaining to satisfy the request, then NULL is returned.

> +

> +  @param  AllocationSize        The number of bytes to allocate.

> +

> +  @return A pointer to the allocated buffer or NULL if allocation fails.

> +

> +**/

> +VOID *

> +EFIAPI

> +AllocateReservedPool (

> +  IN UINTN  AllocationSize

> +  )

> +{

> +  ASSERT (FALSE);

> +  return NULL;

> +}

> +

> +/**

> +  Allocates and zeros a buffer of type EfiBootServicesData.

> +

> +  Allocates the number bytes specified by AllocationSize of type EfiBootServicesData, clears the

> +  buffer with zeros, and returns a pointer to the allocated buffer.  If AllocationSize is 0, then a

> +  valid buffer of 0 size is returned.  If there is not enough memory remaining to satisfy the

> +  request, then NULL is returned.

> +

> +  @param  AllocationSize        The number of bytes to allocate and zero.

> +

> +  @return A pointer to the allocated buffer or NULL if allocation fails.

> +

> +**/

> +VOID *

> +EFIAPI

> +AllocateZeroPool (

> +  IN UINTN  AllocationSize

> +  )

> +{

> +  ASSERT (FALSE);

> +  return NULL;

> +}

> +

> +/**

> +  Allocates and zeros a buffer of type EfiRuntimeServicesData.

> +

> +  Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, clears the

> +  buffer with zeros, and returns a pointer to the allocated buffer.  If AllocationSize is 0, then a

> +  valid buffer of 0 size is returned.  If there is not enough memory remaining to satisfy the

> +  request, then NULL is returned.

> +

> +  @param  AllocationSize        The number of bytes to allocate and zero.

> +

> +  @return A pointer to the allocated buffer or NULL if allocation fails.

> +

> +**/

> +VOID *

> +EFIAPI

> +AllocateRuntimeZeroPool (

> +  IN UINTN  AllocationSize

> +  )

> +{

> +  ASSERT (FALSE);

> +  return NULL;

> +}

> +

> +/**

> +  Allocates and zeros a buffer of type EfiReservedMemoryType.

> +

> +  Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType, clears the

> +  buffer with zeros, and returns a pointer to the allocated buffer.  If AllocationSize is 0, then a

> +  valid buffer of 0 size is returned.  If there is not enough memory remaining to satisfy the

> +  request, then NULL is returned.

> +

> +  @param  AllocationSize        The number of bytes to allocate and zero.

> +

> +  @return A pointer to the allocated buffer or NULL if allocation fails.

> +

> +**/

> +VOID *

> +EFIAPI

> +AllocateReservedZeroPool (

> +  IN UINTN  AllocationSize

> +  )

> +{

> +  ASSERT (FALSE);

> +  return NULL;

> +}

> +

> +/**

> +  Copies a buffer to an allocated buffer of type EfiBootServicesData.

> +

> +  Allocates the number bytes specified by AllocationSize of type EfiBootServicesData, copies

> +  AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the

> +  allocated buffer.  If AllocationSize is 0, then a valid buffer of 0 size is returned.  If there

> +  is not enough memory remaining to satisfy the request, then NULL is returned.

> +

> +  If Buffer is NULL, then ASSERT().

> +  If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().

> +

> +  @param  AllocationSize        The number of bytes to allocate and zero.

> +  @param  Buffer                The buffer to copy to the allocated buffer.

> +

> +  @return A pointer to the allocated buffer or NULL if allocation fails.

> +

> +**/

> +VOID *

> +EFIAPI

> +AllocateCopyPool (

> +  IN UINTN       AllocationSize,

> +  IN CONST VOID  *Buffer

> +  )

> +{

> +  ASSERT (FALSE);

> +  return NULL;

> +}

> +

> +/**

> +  Copies a buffer to an allocated buffer of type EfiRuntimeServicesData.

> +

> +  Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, copies

> +  AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the

> +  allocated buffer.  If AllocationSize is 0, then a valid buffer of 0 size is returned.  If there

> +  is not enough memory remaining to satisfy the request, then NULL is returned.

> +

> +  If Buffer is NULL, then ASSERT().

> +  If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().

> +

> +  @param  AllocationSize        The number of bytes to allocate and zero.

> +  @param  Buffer                The buffer to copy to the allocated buffer.

> +

> +  @return A pointer to the allocated buffer or NULL if allocation fails.

> +

> +**/

> +VOID *

> +EFIAPI

> +AllocateRuntimeCopyPool (

> +  IN UINTN       AllocationSize,

> +  IN CONST VOID  *Buffer

> +  )

> +{

> +  ASSERT (FALSE);

> +  return NULL;

> +}

> +

> +/**

> +  Copies a buffer to an allocated buffer of type EfiReservedMemoryType.

> +

> +  Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType, copies

> +  AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the

> +  allocated buffer.  If AllocationSize is 0, then a valid buffer of 0 size is returned.  If there

> +  is not enough memory remaining to satisfy the request, then NULL is returned.

> +

> +  If Buffer is NULL, then ASSERT().

> +  If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().

> +

> +  @param  AllocationSize        The number of bytes to allocate and zero.

> +  @param  Buffer                The buffer to copy to the allocated buffer.

> +

> +  @return A pointer to the allocated buffer or NULL if allocation fails.

> +

> +**/

> +VOID *

> +EFIAPI

> +AllocateReservedCopyPool (

> +  IN UINTN       AllocationSize,

> +  IN CONST VOID  *Buffer

> +  )

> +{

> +  ASSERT (FALSE);

> +  return NULL;

> +}

> +

> +/**

> +  Reallocates a buffer of type EfiBootServicesData.

> +

> +  Allocates and zeros the number bytes specified by NewSize from memory of type

> +  EfiBootServicesData.  If OldBuffer is not NULL, then the smaller of OldSize and

> +  NewSize bytes are copied from OldBuffer to the newly allocated buffer, and

> +  OldBuffer is freed.  A pointer to the newly allocated buffer is returned.

> +  If NewSize is 0, then a valid buffer of 0 size is  returned.  If there is not

> +  enough memory remaining to satisfy the request, then NULL is returned.

> +

> +  If the allocation of the new buffer is successful and the smaller of NewSize and OldSize

> +  is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().

> +

> +  @param  OldSize        The size, in bytes, of OldBuffer.

> +  @param  NewSize        The size, in bytes, of the buffer to reallocate.

> +  @param  OldBuffer      The buffer to copy to the allocated buffer.  This is an optional

> +                         parameter that may be NULL.

> +

> +  @return A pointer to the allocated buffer or NULL if allocation fails.

> +

> +**/

> +VOID *

> +EFIAPI

> +ReallocatePool (

> +  IN UINTN  OldSize,

> +  IN UINTN  NewSize,

> +  IN VOID   *OldBuffer  OPTIONAL

> +  )

> +{

> +  ASSERT (FALSE);

> +  return NULL;

> +}

> +

> +/**

> +  Reallocates a buffer of type EfiRuntimeServicesData.

> +

> +  Allocates and zeros the number bytes specified by NewSize from memory of type

> +  EfiRuntimeServicesData.  If OldBuffer is not NULL, then the smaller of OldSize and

> +  NewSize bytes are copied from OldBuffer to the newly allocated buffer, and

> +  OldBuffer is freed.  A pointer to the newly allocated buffer is returned.

> +  If NewSize is 0, then a valid buffer of 0 size is  returned.  If there is not

> +  enough memory remaining to satisfy the request, then NULL is returned.

> +

> +  If the allocation of the new buffer is successful and the smaller of NewSize and OldSize

> +  is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().

> +

> +  @param  OldSize        The size, in bytes, of OldBuffer.

> +  @param  NewSize        The size, in bytes, of the buffer to reallocate.

> +  @param  OldBuffer      The buffer to copy to the allocated buffer.  This is an optional

> +                         parameter that may be NULL.

> +

> +  @return A pointer to the allocated buffer or NULL if allocation fails.

> +

> +**/

> +VOID *

> +EFIAPI

> +ReallocateRuntimePool (

> +  IN UINTN  OldSize,

> +  IN UINTN  NewSize,

> +  IN VOID   *OldBuffer  OPTIONAL

> +  )

> +{

> +  ASSERT (FALSE);

> +  return NULL;

> +}

> +

> +/**

> +  Reallocates a buffer of type EfiReservedMemoryType.

> +

> +  Allocates and zeros the number bytes specified by NewSize from memory of type

> +  EfiReservedMemoryType.  If OldBuffer is not NULL, then the smaller of OldSize and

> +  NewSize bytes are copied from OldBuffer to the newly allocated buffer, and

> +  OldBuffer is freed.  A pointer to the newly allocated buffer is returned.

> +  If NewSize is 0, then a valid buffer of 0 size is  returned.  If there is not

> +  enough memory remaining to satisfy the request, then NULL is returned.

> +

> +  If the allocation of the new buffer is successful and the smaller of NewSize and OldSize

> +  is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().

> +

> +  @param  OldSize        The size, in bytes, of OldBuffer.

> +  @param  NewSize        The size, in bytes, of the buffer to reallocate.

> +  @param  OldBuffer      The buffer to copy to the allocated buffer.  This is an

> +                         optional parameter that may be NULL.

> +

> +  @return A pointer to the allocated buffer or NULL if allocation fails.

> +

> +**/

> +VOID *

> +EFIAPI

> +ReallocateReservedPool (

> +  IN UINTN  OldSize,

> +  IN UINTN  NewSize,

> +  IN VOID   *OldBuffer  OPTIONAL

> +  )

> +{

> +  ASSERT (FALSE);

> +  return NULL;

> +}

> +

> +/**

> +  Frees a buffer that was previously allocated with one of the pool allocation functions in the

> +  Memory Allocation Library.

> +

> +  Frees the buffer specified by Buffer.  Buffer must have been allocated on a previous call to the

> +  pool allocation services of the Memory Allocation Library.  If it is not possible to free pool

> +  resources, then this function will perform no actions.

> +

> +  If Buffer was not allocated with a pool allocation function in the Memory Allocation Library,

> +  then ASSERT().

> +

> +  @param  Buffer                The pointer to the buffer to free.

> +

> +**/

> +VOID

> +EFIAPI

> +FreePool (

> +  IN VOID   *Buffer

> +  )

> +{

> +  ASSERT (FALSE);

> +}

> diff --git a/MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.uni b/MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.uni

> new file mode 100644

> index 000000000000..9acf17bc2038

> --- /dev/null

> +++ b/MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.uni

> @@ -0,0 +1,20 @@

> +// /** @file

> +// Null instance of Memory Allocation Library

> +//

> +// Copyright (c) 2007 - 2014, Intel Corporation. All rights reserved.<BR>

> +// Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR>

> +//

> +// This program and the accompanying materials

> +// are licensed and made available under the terms and conditions of the BSD License

> +// which accompanies this distribution. The full text of the license may be found at

> +// http://opensource.org/licenses/bsd-license.php.

> +// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,

> +// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

> +//

> +// **/

> +

> +

> +#string STR_MODULE_ABSTRACT             #language en-US "Null instance of Memory Allocation Library"

> +

> +#string STR_MODULE_DESCRIPTION          #language en-US "Memory Allocation Library for build testing only."

> +

> 


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Patch

diff --git a/MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.inf b/MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.inf
new file mode 100644
index 000000000000..c231cd0e271b
--- /dev/null
+++ b/MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.inf
@@ -0,0 +1,38 @@ 
+## @file
+# Null instance of Memory Allocation Library.
+#
+# Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR>
+#
+#  This program and the accompanying materials
+#  are licensed and made available under the terms and conditions of the BSD License
+#  which accompanies this distribution. The full text of the license may be found at
+#  http://opensource.org/licenses/bsd-license.php.
+#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+#
+##
+
+[Defines]
+  INF_VERSION                    = 0x0001001B
+  BASE_NAME                      = BaseMemoryAllocationLibNull
+  MODULE_UNI_FILE                = BaseMemoryAllocationLibNull.uni
+  FILE_GUID                      = fd56f5d6-f194-448f-be69-c0cbb0c281af
+  MODULE_TYPE                    = BASE
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = MemoryAllocationLib
+
+
+#
+#  VALID_ARCHITECTURES           = IA32 X64 ARM AARCH64
+#
+
+[Sources]
+  BaseMemoryAllocationLibNull.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+
+[LibraryClasses]
+  DebugLib
diff --git a/MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.c b/MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.c
new file mode 100644
index 000000000000..16812d3f9bb3
--- /dev/null
+++ b/MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.c
@@ -0,0 +1,575 @@ 
+/** @file
+  DUmmy support routines for memory allocation
+
+  Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR>
+  This program and the accompanying materials
+  are licensed and made available under the terms and conditions of the BSD License
+  which accompanies this distribution.  The full text of the license may be found at
+  http://opensource.org/licenses/bsd-license.php.
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+
+#include <Uefi/UefiBaseType.h>
+
+#include <Library/DebugLib.h>
+#include <Library/MemoryAllocationLib.h>
+
+
+/**
+  Allocates one or more 4KB pages of type EfiBootServicesData.
+
+  Allocates the number of 4KB pages of type EfiBootServicesData and returns a pointer to the
+  allocated buffer.  The buffer returned is aligned on a 4KB boundary.  If Pages is 0, then NULL
+  is returned.  If there is not enough memory remaining to satisfy the request, then NULL is
+  returned.
+
+  @param  Pages                 The number of 4 KB pages to allocate.
+
+  @return A pointer to the allocated buffer or NULL if allocation fails.
+
+**/
+VOID *
+EFIAPI
+AllocatePages (
+  IN UINTN  Pages
+  )
+{
+  ASSERT (FALSE);
+  return NULL;
+}
+
+/**
+  Allocates one or more 4KB pages of type EfiRuntimeServicesData.
+
+  Allocates the number of 4KB pages of type EfiRuntimeServicesData and returns a pointer to the
+  allocated buffer.  The buffer returned is aligned on a 4KB boundary.  If Pages is 0, then NULL
+  is returned.  If there is not enough memory remaining to satisfy the request, then NULL is
+  returned.
+
+  @param  Pages                 The number of 4 KB pages to allocate.
+
+  @return A pointer to the allocated buffer or NULL if allocation fails.
+
+**/
+VOID *
+EFIAPI
+AllocateRuntimePages (
+  IN UINTN  Pages
+  )
+{
+  ASSERT (FALSE);
+  return NULL;
+}
+
+/**
+  Allocates one or more 4KB pages of type EfiReservedMemoryType.
+
+  Allocates the number of 4KB pages of type EfiReservedMemoryType and returns a pointer to the
+  allocated buffer.  The buffer returned is aligned on a 4KB boundary.  If Pages is 0, then NULL
+  is returned.  If there is not enough memory remaining to satisfy the request, then NULL is
+  returned.
+
+  @param  Pages                 The number of 4 KB pages to allocate.
+
+  @return A pointer to the allocated buffer or NULL if allocation fails.
+
+**/
+VOID *
+EFIAPI
+AllocateReservedPages (
+  IN UINTN  Pages
+  )
+{
+  ASSERT (FALSE);
+  return NULL;
+}
+
+/**
+  Frees one or more 4KB pages that were previously allocated with one of the page allocation
+  functions in the Memory Allocation Library.
+
+  Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer.  Buffer
+  must have been allocated on a previous call to the page allocation services of the Memory
+  Allocation Library.  If it is not possible to free allocated pages, then this function will
+  perform no actions.
+
+  If Buffer was not allocated with a page allocation function in the Memory Allocation Library,
+  then ASSERT().
+  If Pages is zero, then ASSERT().
+
+  @param  Buffer                The pointer to the buffer of pages to free.
+  @param  Pages                 The number of 4 KB pages to free.
+
+**/
+VOID
+EFIAPI
+FreePages (
+  IN VOID   *Buffer,
+  IN UINTN  Pages
+  )
+{
+  ASSERT (FALSE);
+}
+
+/**
+  Allocates one or more 4KB pages of type EfiBootServicesData at a specified alignment.
+
+  Allocates the number of 4KB pages specified by Pages of type EfiBootServicesData with an
+  alignment specified by Alignment.  The allocated buffer is returned.  If Pages is 0, then NULL is
+  returned.  If there is not enough memory at the specified alignment remaining to satisfy the
+  request, then NULL is returned.
+
+  If Alignment is not a power of two and Alignment is not zero, then ASSERT().
+  If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().
+
+  @param  Pages                 The number of 4 KB pages to allocate.
+  @param  Alignment             The requested alignment of the allocation.
+                                Must be a power of two.
+                                If Alignment is zero, then byte alignment is used.
+
+  @return A pointer to the allocated buffer or NULL if allocation fails.
+
+**/
+VOID *
+EFIAPI
+AllocateAlignedPages (
+  IN UINTN  Pages,
+  IN UINTN  Alignment
+  )
+{
+  ASSERT (FALSE);
+  return NULL;
+}
+
+/**
+  Allocates one or more 4KB pages of type EfiRuntimeServicesData at a specified alignment.
+
+  Allocates the number of 4KB pages specified by Pages of type EfiRuntimeServicesData with an
+  alignment specified by Alignment.  The allocated buffer is returned.  If Pages is 0, then NULL is
+  returned.  If there is not enough memory at the specified alignment remaining to satisfy the
+  request, then NULL is returned.
+
+  If Alignment is not a power of two and Alignment is not zero, then ASSERT().
+  If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().
+
+  @param  Pages                 The number of 4 KB pages to allocate.
+  @param  Alignment             The requested alignment of the allocation.
+                                Must be a power of two.
+                                If Alignment is zero, then byte alignment is used.
+
+  @return A pointer to the allocated buffer or NULL if allocation fails.
+
+**/
+VOID *
+EFIAPI
+AllocateAlignedRuntimePages (
+  IN UINTN  Pages,
+  IN UINTN  Alignment
+  )
+{
+  ASSERT (FALSE);
+  return NULL;
+}
+
+/**
+  Allocates one or more 4KB pages of type EfiReservedMemoryType at a specified alignment.
+
+  Allocates the number of 4KB pages specified by Pages of type EfiReservedMemoryType with an
+  alignment specified by Alignment.  The allocated buffer is returned.  If Pages is 0, then NULL is
+  returned.  If there is not enough memory at the specified alignment remaining to satisfy the
+  request, then NULL is returned.
+
+  If Alignment is not a power of two and Alignment is not zero, then ASSERT().
+  If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().
+
+  @param  Pages                 The number of 4 KB pages to allocate.
+  @param  Alignment             The requested alignment of the allocation.
+                                Must be a power of two.
+                                If Alignment is zero, then byte alignment is used.
+
+  @return A pointer to the allocated buffer or NULL if allocation fails.
+
+**/
+VOID *
+EFIAPI
+AllocateAlignedReservedPages (
+  IN UINTN  Pages,
+  IN UINTN  Alignment
+  )
+{
+  ASSERT (FALSE);
+  return NULL;
+}
+
+/**
+  Frees one or more 4KB pages that were previously allocated with one of the aligned page
+  allocation functions in the Memory Allocation Library.
+
+  Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer.  Buffer
+  must have been allocated on a previous call to the aligned page allocation services of the Memory
+  Allocation Library.  If it is not possible to free allocated pages, then this function will
+  perform no actions.
+
+  If Buffer was not allocated with an aligned page allocation function in the Memory Allocation
+  Library, then ASSERT().
+  If Pages is zero, then ASSERT().
+
+  @param  Buffer                The pointer to the buffer of pages to free.
+  @param  Pages                 The number of 4 KB pages to free.
+
+**/
+VOID
+EFIAPI
+FreeAlignedPages (
+  IN VOID   *Buffer,
+  IN UINTN  Pages
+  )
+{
+  ASSERT (FALSE);
+}
+
+/**
+  Allocates a buffer of type EfiBootServicesData.
+
+  Allocates the number bytes specified by AllocationSize of type EfiBootServicesData and returns a
+  pointer to the allocated buffer.  If AllocationSize is 0, then a valid buffer of 0 size is
+  returned.  If there is not enough memory remaining to satisfy the request, then NULL is returned.
+
+  @param  AllocationSize        The number of bytes to allocate.
+
+  @return A pointer to the allocated buffer or NULL if allocation fails.
+
+**/
+VOID *
+EFIAPI
+AllocatePool (
+  IN UINTN  AllocationSize
+  )
+{
+  ASSERT (FALSE);
+  return NULL;
+}
+
+/**
+  Allocates a buffer of type EfiRuntimeServicesData.
+
+  Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData and returns
+  a pointer to the allocated buffer.  If AllocationSize is 0, then a valid buffer of 0 size is
+  returned.  If there is not enough memory remaining to satisfy the request, then NULL is returned.
+
+  @param  AllocationSize        The number of bytes to allocate.
+
+  @return A pointer to the allocated buffer or NULL if allocation fails.
+
+**/
+VOID *
+EFIAPI
+AllocateRuntimePool (
+  IN UINTN  AllocationSize
+  )
+{
+  ASSERT (FALSE);
+  return NULL;
+}
+
+/**
+  Allocates a buffer of type EfiReservedMemoryType.
+
+  Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType and returns
+  a pointer to the allocated buffer.  If AllocationSize is 0, then a valid buffer of 0 size is
+  returned.  If there is not enough memory remaining to satisfy the request, then NULL is returned.
+
+  @param  AllocationSize        The number of bytes to allocate.
+
+  @return A pointer to the allocated buffer or NULL if allocation fails.
+
+**/
+VOID *
+EFIAPI
+AllocateReservedPool (
+  IN UINTN  AllocationSize
+  )
+{
+  ASSERT (FALSE);
+  return NULL;
+}
+
+/**
+  Allocates and zeros a buffer of type EfiBootServicesData.
+
+  Allocates the number bytes specified by AllocationSize of type EfiBootServicesData, clears the
+  buffer with zeros, and returns a pointer to the allocated buffer.  If AllocationSize is 0, then a
+  valid buffer of 0 size is returned.  If there is not enough memory remaining to satisfy the
+  request, then NULL is returned.
+
+  @param  AllocationSize        The number of bytes to allocate and zero.
+
+  @return A pointer to the allocated buffer or NULL if allocation fails.
+
+**/
+VOID *
+EFIAPI
+AllocateZeroPool (
+  IN UINTN  AllocationSize
+  )
+{
+  ASSERT (FALSE);
+  return NULL;
+}
+
+/**
+  Allocates and zeros a buffer of type EfiRuntimeServicesData.
+
+  Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, clears the
+  buffer with zeros, and returns a pointer to the allocated buffer.  If AllocationSize is 0, then a
+  valid buffer of 0 size is returned.  If there is not enough memory remaining to satisfy the
+  request, then NULL is returned.
+
+  @param  AllocationSize        The number of bytes to allocate and zero.
+
+  @return A pointer to the allocated buffer or NULL if allocation fails.
+
+**/
+VOID *
+EFIAPI
+AllocateRuntimeZeroPool (
+  IN UINTN  AllocationSize
+  )
+{
+  ASSERT (FALSE);
+  return NULL;
+}
+
+/**
+  Allocates and zeros a buffer of type EfiReservedMemoryType.
+
+  Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType, clears the
+  buffer with zeros, and returns a pointer to the allocated buffer.  If AllocationSize is 0, then a
+  valid buffer of 0 size is returned.  If there is not enough memory remaining to satisfy the
+  request, then NULL is returned.
+
+  @param  AllocationSize        The number of bytes to allocate and zero.
+
+  @return A pointer to the allocated buffer or NULL if allocation fails.
+
+**/
+VOID *
+EFIAPI
+AllocateReservedZeroPool (
+  IN UINTN  AllocationSize
+  )
+{
+  ASSERT (FALSE);
+  return NULL;
+}
+
+/**
+  Copies a buffer to an allocated buffer of type EfiBootServicesData.
+
+  Allocates the number bytes specified by AllocationSize of type EfiBootServicesData, copies
+  AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the
+  allocated buffer.  If AllocationSize is 0, then a valid buffer of 0 size is returned.  If there
+  is not enough memory remaining to satisfy the request, then NULL is returned.
+
+  If Buffer is NULL, then ASSERT().
+  If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
+
+  @param  AllocationSize        The number of bytes to allocate and zero.
+  @param  Buffer                The buffer to copy to the allocated buffer.
+
+  @return A pointer to the allocated buffer or NULL if allocation fails.
+
+**/
+VOID *
+EFIAPI
+AllocateCopyPool (
+  IN UINTN       AllocationSize,
+  IN CONST VOID  *Buffer
+  )
+{
+  ASSERT (FALSE);
+  return NULL;
+}
+
+/**
+  Copies a buffer to an allocated buffer of type EfiRuntimeServicesData.
+
+  Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, copies
+  AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the
+  allocated buffer.  If AllocationSize is 0, then a valid buffer of 0 size is returned.  If there
+  is not enough memory remaining to satisfy the request, then NULL is returned.
+
+  If Buffer is NULL, then ASSERT().
+  If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
+
+  @param  AllocationSize        The number of bytes to allocate and zero.
+  @param  Buffer                The buffer to copy to the allocated buffer.
+
+  @return A pointer to the allocated buffer or NULL if allocation fails.
+
+**/
+VOID *
+EFIAPI
+AllocateRuntimeCopyPool (
+  IN UINTN       AllocationSize,
+  IN CONST VOID  *Buffer
+  )
+{
+  ASSERT (FALSE);
+  return NULL;
+}
+
+/**
+  Copies a buffer to an allocated buffer of type EfiReservedMemoryType.
+
+  Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType, copies
+  AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the
+  allocated buffer.  If AllocationSize is 0, then a valid buffer of 0 size is returned.  If there
+  is not enough memory remaining to satisfy the request, then NULL is returned.
+
+  If Buffer is NULL, then ASSERT().
+  If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
+
+  @param  AllocationSize        The number of bytes to allocate and zero.
+  @param  Buffer                The buffer to copy to the allocated buffer.
+
+  @return A pointer to the allocated buffer or NULL if allocation fails.
+
+**/
+VOID *
+EFIAPI
+AllocateReservedCopyPool (
+  IN UINTN       AllocationSize,
+  IN CONST VOID  *Buffer
+  )
+{
+  ASSERT (FALSE);
+  return NULL;
+}
+
+/**
+  Reallocates a buffer of type EfiBootServicesData.
+
+  Allocates and zeros the number bytes specified by NewSize from memory of type
+  EfiBootServicesData.  If OldBuffer is not NULL, then the smaller of OldSize and
+  NewSize bytes are copied from OldBuffer to the newly allocated buffer, and
+  OldBuffer is freed.  A pointer to the newly allocated buffer is returned.
+  If NewSize is 0, then a valid buffer of 0 size is  returned.  If there is not
+  enough memory remaining to satisfy the request, then NULL is returned.
+
+  If the allocation of the new buffer is successful and the smaller of NewSize and OldSize
+  is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().
+
+  @param  OldSize        The size, in bytes, of OldBuffer.
+  @param  NewSize        The size, in bytes, of the buffer to reallocate.
+  @param  OldBuffer      The buffer to copy to the allocated buffer.  This is an optional
+                         parameter that may be NULL.
+
+  @return A pointer to the allocated buffer or NULL if allocation fails.
+
+**/
+VOID *
+EFIAPI
+ReallocatePool (
+  IN UINTN  OldSize,
+  IN UINTN  NewSize,
+  IN VOID   *OldBuffer  OPTIONAL
+  )
+{
+  ASSERT (FALSE);
+  return NULL;
+}
+
+/**
+  Reallocates a buffer of type EfiRuntimeServicesData.
+
+  Allocates and zeros the number bytes specified by NewSize from memory of type
+  EfiRuntimeServicesData.  If OldBuffer is not NULL, then the smaller of OldSize and
+  NewSize bytes are copied from OldBuffer to the newly allocated buffer, and
+  OldBuffer is freed.  A pointer to the newly allocated buffer is returned.
+  If NewSize is 0, then a valid buffer of 0 size is  returned.  If there is not
+  enough memory remaining to satisfy the request, then NULL is returned.
+
+  If the allocation of the new buffer is successful and the smaller of NewSize and OldSize
+  is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().
+
+  @param  OldSize        The size, in bytes, of OldBuffer.
+  @param  NewSize        The size, in bytes, of the buffer to reallocate.
+  @param  OldBuffer      The buffer to copy to the allocated buffer.  This is an optional
+                         parameter that may be NULL.
+
+  @return A pointer to the allocated buffer or NULL if allocation fails.
+
+**/
+VOID *
+EFIAPI
+ReallocateRuntimePool (
+  IN UINTN  OldSize,
+  IN UINTN  NewSize,
+  IN VOID   *OldBuffer  OPTIONAL
+  )
+{
+  ASSERT (FALSE);
+  return NULL;
+}
+
+/**
+  Reallocates a buffer of type EfiReservedMemoryType.
+
+  Allocates and zeros the number bytes specified by NewSize from memory of type
+  EfiReservedMemoryType.  If OldBuffer is not NULL, then the smaller of OldSize and
+  NewSize bytes are copied from OldBuffer to the newly allocated buffer, and
+  OldBuffer is freed.  A pointer to the newly allocated buffer is returned.
+  If NewSize is 0, then a valid buffer of 0 size is  returned.  If there is not
+  enough memory remaining to satisfy the request, then NULL is returned.
+
+  If the allocation of the new buffer is successful and the smaller of NewSize and OldSize
+  is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().
+
+  @param  OldSize        The size, in bytes, of OldBuffer.
+  @param  NewSize        The size, in bytes, of the buffer to reallocate.
+  @param  OldBuffer      The buffer to copy to the allocated buffer.  This is an
+                         optional parameter that may be NULL.
+
+  @return A pointer to the allocated buffer or NULL if allocation fails.
+
+**/
+VOID *
+EFIAPI
+ReallocateReservedPool (
+  IN UINTN  OldSize,
+  IN UINTN  NewSize,
+  IN VOID   *OldBuffer  OPTIONAL
+  )
+{
+  ASSERT (FALSE);
+  return NULL;
+}
+
+/**
+  Frees a buffer that was previously allocated with one of the pool allocation functions in the
+  Memory Allocation Library.
+
+  Frees the buffer specified by Buffer.  Buffer must have been allocated on a previous call to the
+  pool allocation services of the Memory Allocation Library.  If it is not possible to free pool
+  resources, then this function will perform no actions.
+
+  If Buffer was not allocated with a pool allocation function in the Memory Allocation Library,
+  then ASSERT().
+
+  @param  Buffer                The pointer to the buffer to free.
+
+**/
+VOID
+EFIAPI
+FreePool (
+  IN VOID   *Buffer
+  )
+{
+  ASSERT (FALSE);
+}
diff --git a/MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.uni b/MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.uni
new file mode 100644
index 000000000000..9acf17bc2038
--- /dev/null
+++ b/MdeModulePkg/Library/BaseMemoryAllocationLibNull/BaseMemoryAllocationLibNull.uni
@@ -0,0 +1,20 @@ 
+// /** @file
+// Null instance of Memory Allocation Library
+//
+// Copyright (c) 2007 - 2014, Intel Corporation. All rights reserved.<BR>
+// Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR>
+//
+// This program and the accompanying materials
+// are licensed and made available under the terms and conditions of the BSD License
+// which accompanies this distribution. The full text of the license may be found at
+// http://opensource.org/licenses/bsd-license.php.
+// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+//
+// **/
+
+
+#string STR_MODULE_ABSTRACT             #language en-US "Null instance of Memory Allocation Library"
+
+#string STR_MODULE_DESCRIPTION          #language en-US "Memory Allocation Library for build testing only."
+