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/** @file
Data structure and functions to allocate and free memory space.
Copyright (c) 2006 - 2008, Intel Corporation
All rights reserved. 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 _IMEM_H_
#define _IMEM_H_
#if defined (MDE_CPU_IPF)
//
// For Itanium machines make the default allocations 8K aligned
//
#define EFI_ACPI_RUNTIME_PAGE_ALLOCATION_ALIGNMENT (EFI_PAGE_SIZE * 2)
#define DEFAULT_PAGE_ALLOCATION (EFI_PAGE_SIZE * 2)
#else
//
// For genric EFI machines make the default allocations 4K aligned
//
#define EFI_ACPI_RUNTIME_PAGE_ALLOCATION_ALIGNMENT (EFI_PAGE_SIZE)
#define DEFAULT_PAGE_ALLOCATION (EFI_PAGE_SIZE)
#endif
//
// MEMORY_MAP_ENTRY
//
#define MEMORY_MAP_SIGNATURE EFI_SIGNATURE_32('m','m','a','p')
typedef struct {
UINTN Signature;
LIST_ENTRY Link;
BOOLEAN FromPages;
EFI_MEMORY_TYPE Type;
UINT64 Start;
UINT64 End;
UINT64 VirtualStart;
UINT64 Attribute;
} MEMORY_MAP;
//
// Internal prototypes
//
VOID *
CoreAllocatePoolPages (
IN EFI_MEMORY_TYPE PoolType,
IN UINTN NumberOfPages,
IN UINTN Alignment
)
/*++
Routine Description:
Internal function. Used by the pool functions to allocate pages
to back pool allocation requests.
Arguments:
PoolType - The type of memory for the new pool pages
NumberOfPages - No of pages to allocate
Alignment - Bits to align.
Returns:
The allocated memory, or NULL
--*/
;
VOID
CoreFreePoolPages (
IN EFI_PHYSICAL_ADDRESS Memory,
IN UINTN NumberOfPages
)
/*++
Routine Description:
Internal function. Frees pool pages allocated via AllocatePoolPages ()
Arguments:
Memory - The base address to free
NumberOfPages - The number of pages to free
Returns:
None
--*/
;
VOID *
CoreAllocatePoolI (
IN EFI_MEMORY_TYPE PoolType,
IN UINTN Size
)
/*++
Routine Description:
Internal function to allocate pool of a particular type.
Caller must have the memory lock held
Arguments:
PoolType - Type of pool to allocate
Size - The amount of pool to allocate
Returns:
The allocate pool, or NULL
--*/
;
EFI_STATUS
CoreFreePoolI (
IN VOID *Buffer
)
/*++
Routine Description:
Internal function to free a pool entry.
Caller must have the memory lock held
Arguments:
Buffer - The allocated pool entry to free
Returns:
EFI_INVALID_PARAMETER - Buffer not valid
EFI_SUCCESS - Buffer successfully freed.
--*/
;
VOID
CoreAcquireMemoryLock (
VOID
)
/*++
Routine Description:
Enter critical section by gaining lock on gMemoryLock
Arguments:
None
Returns:
None
--*/
;
VOID
CoreReleaseMemoryLock (
VOID
)
/*++
Routine Description:
Exit critical section by releasing lock on gMemoryLock
Arguments:
None
Returns:
None
--*/
;
//
// Internal Global data
//
extern EFI_LOCK gMemoryLock;
extern LIST_ENTRY gMemoryMap;
extern MEMORY_MAP *gMemoryLastConvert;
extern LIST_ENTRY mGcdMemorySpaceMap;
#endif
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