/** @file
  Contains function prototypes for Memory Services in DxeCore.

  This header file borrows the DxeCore Memory Allocation services as the primitive
  for memory allocation. 

  Copyright (c) 2008, Intel Corporation. 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.             

**/

#ifndef _DXE_CORE_MEMORY_ALLOCATION_SERVICES_H_
#define _DXE_CORE_MEMORY_ALLOCATION_SERVICES_H_


/**
  Allocates pages from the memory map.

  @param  Type                   The type of allocation to perform
  @param  MemoryType             The type of memory to turn the allocated pages
                                 into
  @param  NumberOfPages          The number of pages to allocate
  @param  Memory                 A pointer to receive the base allocated memory
                                 address

  @return Status. On success, Memory is filled in with the base address allocated
  @retval EFI_INVALID_PARAMETER  Parameters violate checking rules defined in
                                 spec.
  @retval EFI_NOT_FOUND          Could not allocate pages match the requirement.
  @retval EFI_OUT_OF_RESOURCES   No enough pages to allocate.
  @retval EFI_SUCCESS            Pages successfully allocated.

**/
EFI_STATUS
EFIAPI
CoreAllocatePages (
  IN EFI_ALLOCATE_TYPE      Type,
  IN EFI_MEMORY_TYPE        MemoryType,
  IN UINTN                  NumberOfPages,
  IN OUT EFI_PHYSICAL_ADDRESS  *Memory
  );



/**
  Frees previous allocated pages.

  @param  Memory                 Base address of memory being freed
  @param  NumberOfPages          The number of pages to free

  @retval EFI_NOT_FOUND          Could not find the entry that covers the range
  @retval EFI_INVALID_PARAMETER  Address not aligned
  @return EFI_SUCCESS         -Pages successfully freed.

**/
EFI_STATUS
EFIAPI
CoreFreePages (
  IN EFI_PHYSICAL_ADDRESS   Memory,
  IN UINTN                  NumberOfPages
  );


/**
  Allocate pool of a particular type.

  @param  PoolType               Type of pool to allocate
  @param  Size                   The amount of pool to allocate
  @param  Buffer                 The address to return a pointer to the allocated
                                 pool

  @retval EFI_INVALID_PARAMETER  PoolType not valid
  @retval EFI_OUT_OF_RESOURCES   Size exceeds max pool size or allocation failed.
  @retval EFI_SUCCESS            Pool successfully allocated.

**/
EFI_STATUS
EFIAPI
CoreAllocatePool (
  IN EFI_MEMORY_TYPE  PoolType,
  IN UINTN            Size,
  OUT VOID            **Buffer
  );

/**
  Frees pool.

  @param  Buffer                 The allocated pool entry to free

  @retval EFI_INVALID_PARAMETER  Buffer is not a valid value.
  @retval EFI_SUCCESS            Pool successfully freed.

**/
EFI_STATUS
EFIAPI
CoreFreePool (
  IN VOID        *Buffer
  );

#endif
