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/** @file
Internal include file of PEI Memory Allocation Library.
Copyright (c) 2006, 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.
Module Name: MemoryAllocationLibInternals.h
**/
#ifndef __PEI_MEMORY_ALLOCATION_LIB_INTERNALS_H__
#define __PEI_MEMORY_ALLOCATION_LIB_INTERNALS_H__
/**
Allocates one or more 4KB pages of a certain memory type.
Allocates the number of 4KB pages of a certain memory type 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 MemoryType The type of memory to allocate.
@param Pages The number of 4 KB pages to allocate.
@return A pointer to the allocated buffer or NULL if allocation fails.
**/
VOID *
InternalAllocatePages (
IN EFI_MEMORY_TYPE MemoryType,
IN UINTN Pages
);
/**
Allocates one or more 4KB pages of a certain memory type at a specified alignment.
Allocates the number of 4KB pages specified by Pages of a certain memory type 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().
@param MemoryType The type of memory to allocate.
@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 *
InternalAllocateAlignedPages (
IN EFI_MEMORY_TYPE MemoryType,
IN UINTN Pages,
IN UINTN Alignment
);
/**
Allocates a buffer of a certain pool type.
Allocates the number bytes specified by AllocationSize of a certain pool type 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 MemoryType The type of memory to allocate.
@param AllocationSize The number of bytes to allocate.
@return A pointer to the allocated buffer or NULL if allocation fails.
**/
VOID *
InternalAllocatePool (
IN EFI_MEMORY_TYPE MemoryType,
IN UINTN AllocationSize
);
/**
Allocates and zeros a buffer of a certian pool type.
Allocates the number bytes specified by AllocationSize of a certian pool type, 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 PoolType The type of memory to allocate.
@param AllocationSize The number of bytes to allocate and zero.
@return A pointer to the allocated buffer or NULL if allocation fails.
**/
VOID *
InternalAllocateZeroPool (
IN EFI_MEMORY_TYPE PoolType,
IN UINTN AllocationSize
);
/**
Copies a buffer to an allocated buffer of a certian pool type.
Allocates the number bytes specified by AllocationSize of a certian pool type, 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 PoolType The type of pool to allocate.
@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 *
InternalAllocateCopyPool (
IN EFI_MEMORY_TYPE PoolType,
IN UINTN AllocationSize,
IN CONST VOID *Buffer
);
/**
Allocates a buffer of a certain pool type at a specified alignment.
Allocates the number bytes specified by AllocationSize of a certain pool type with an alignment
specified by Alignment. The allocated buffer is returned. If AllocationSize is 0, then a valid
buffer of 0 size 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().
@param PoolType The type of pool to allocate.
@param AllocationSize The number of bytes 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.
If Alignment is zero, then byte alignment is used.
@return A pointer to the allocated buffer or NULL if allocation fails.
**/
VOID *
InternalAllocateAlignedPool (
IN EFI_MEMORY_TYPE PoolType,
IN UINTN AllocationSize,
IN UINTN Alignment
);
/**
Allocates and zeros a buffer of a certain pool type at a specified alignment.
Allocates the number bytes specified by AllocationSize of a certain pool type with an alignment
specified by Alignment, 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 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().
@param PoolType The type of pool to allocate.
@param AllocationSize The number of bytes 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 *
InternalAllocateAlignedZeroPool (
IN EFI_MEMORY_TYPE PoolType,
IN UINTN AllocationSize,
IN UINTN Alignment
);
/**
Copies a buffer to an allocated buffer of a certain pool type at a specified alignment.
Allocates the number bytes specified by AllocationSize of a certain pool type with an alignment
specified by Alignment. The allocated buffer is returned. If AllocationSize is 0, then a valid
buffer of 0 size 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().
@param PoolType The type of pool to allocate.
@param AllocationSize The number of bytes to allocate.
@param Buffer The buffer to copy to the allocated buffer.
@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 *
InternalAllocateAlignedCopyPool (
IN EFI_MEMORY_TYPE PoolType,
IN UINTN AllocationSize,
IN CONST VOID *Buffer,
IN UINTN Alignment
);
#endif
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