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Add DxeCoreMemoryAllocationLib instance dedicated to DxeCore use. 

The implementation borrows the DxeCore Memory Allocation services as the primitive
for memory allocation instead of using UEFI boot servces in an indirect way.
It is assumed that this library instance must be linked with DxeCore in this package. 

 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5737 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
qhuang8 2008-08-27 13:38:01 +00:00
parent 7b25a79dc8
commit 0ac727136e
3 changed files with 823 additions and 0 deletions
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48
MdeModulePkg/Library/DxeCoreMemoryAllocationLib/DxeCoreMemoryAllocationLib.inf Normal file
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#/** @file
# Component description file for DxeCore Memory Allocation Library
#
# Memory Allocation Library instance dedicated to DXE Core.
# The implementation borrows the DxeCore Memory Allocation services as the primitive
# for memory allocation instead of using UEFI boot servces in an indirect way.
# It is assumed that this library instance must be linked with DxeCore in this package.
#
# Copyright (c) 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.
#
#
#**/
[Defines]
INF_VERSION = 0x00010005
BASE_NAME = DxeCoreMemoryAllocationLib
FILE_GUID = 632F3FAC-1CA4-4725-BAA2-BDECCF9A111C
MODULE_TYPE = DXE_CORE
VERSION_STRING = 1.0
LIBRARY_CLASS = MemoryAllocationLib|DXE_CORE
EDK_RELEASE_VERSION = 0x00020000
EFI_SPECIFICATION_VERSION = 0x00020000
#
# VALID_ARCHITECTURES = IA32 X64 IPF EBC
#
[Sources.common]
MemoryAllocationLib.c
DxeCoreMemoryAllocationServices.h
[Packages]
MdePkg/MdePkg.dec
[LibraryClasses]
DebugLib
BaseMemoryLib

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MdeModulePkg/Library/DxeCoreMemoryAllocationLib/DxeCoreMemoryAllocationServices.h Normal file
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/** @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<BR>
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 _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

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MdeModulePkg/Library/DxeCoreMemoryAllocationLib/MemoryAllocationLib.c Normal file
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/** @file
Support routines for memory allocation routines based
on boot services for Dxe phase drivers.
Copyright (c) 2006 - 2008, Intel Corporation<BR>
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.
**/
#include <PiDxe.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include "DxeCoreMemoryAllocationServices.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
)
{
EFI_STATUS Status;
EFI_PHYSICAL_ADDRESS Memory;
if (Pages == 0) {
return NULL;
}
Status = CoreAllocatePages (AllocateAnyPages, MemoryType, Pages, &Memory);
if (EFI_ERROR (Status)) {
return NULL;
}
return (VOID *) (UINTN) Memory;
}
/**
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
)
{
return InternalAllocatePages (EfiBootServicesData, Pages);
}
/**
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
)
{
return InternalAllocatePages (EfiRuntimeServicesData, Pages);
}
/**
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
)
{
return InternalAllocatePages (EfiReservedMemoryType, Pages);
}
/**
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 Buffer was not allocated with a page allocation function in the Memory Allocation Library,
then ASSERT().
If Pages is zero, then ASSERT().
@param Buffer 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
)
{
EFI_STATUS Status;
ASSERT (Pages != 0);
Status = CoreFreePages ((EFI_PHYSICAL_ADDRESS) (UINTN) Buffer, Pages);
ASSERT_EFI_ERROR (Status);
}
/**
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
)
{
EFI_STATUS Status;
EFI_PHYSICAL_ADDRESS Memory;
UINTN AlignedMemory;
UINTN AlignmentMask;
UINTN UnalignedPages;
UINTN RealPages;
//
// Alignment must be a power of two or zero.
//
ASSERT ((Alignment & (Alignment - 1)) == 0);
if (Pages == 0) {
return NULL;
}
if (Alignment > EFI_PAGE_SIZE) {
//
// Caculate the total number of pages since alignment is larger than page size.
//
AlignmentMask = Alignment - 1;
RealPages = Pages + EFI_SIZE_TO_PAGES (Alignment);
//
// Make sure that Pages plus EFI_SIZE_TO_PAGES (Alignment) does not overflow.
//
ASSERT (RealPages > Pages);
Status = CoreAllocatePages (AllocateAnyPages, MemoryType, RealPages, &Memory);
if (EFI_ERROR (Status)) {
return NULL;
}
AlignedMemory = ((UINTN) Memory + AlignmentMask) & ~AlignmentMask;
UnalignedPages = EFI_SIZE_TO_PAGES (AlignedMemory - (UINTN) Memory);
if (UnalignedPages > 0) {
//
// Free first unaligned page(s).
//
Status = CoreFreePages (Memory, UnalignedPages);
ASSERT_EFI_ERROR (Status);
}
Memory = (EFI_PHYSICAL_ADDRESS) (AlignedMemory + EFI_PAGES_TO_SIZE (Pages));
UnalignedPages = RealPages - Pages - UnalignedPages;
if (UnalignedPages > 0) {
//
// Free last unaligned page(s).
//
Status = CoreFreePages (Memory, UnalignedPages);
ASSERT_EFI_ERROR (Status);
}
} else {
//
// Do not over-allocate pages in this case.
//
Status = CoreAllocatePages (AllocateAnyPages, MemoryType, Pages, &Memory);
if (EFI_ERROR (Status)) {
return NULL;
}
AlignedMemory = (UINTN) Memory;
}
return (VOID *) AlignedMemory;
}
/**
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().
@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
)
{
return InternalAllocateAlignedPages (EfiBootServicesData, Pages, Alignment);
}
/**
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().
@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
)
{
return InternalAllocateAlignedPages (EfiRuntimeServicesData, Pages, Alignment);
}
/**
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().
@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
)
{
return InternalAllocateAlignedPages (EfiReservedMemoryType, Pages, Alignment);
}
/**
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 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 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
)
{
EFI_STATUS Status;
ASSERT (Pages != 0);
Status = CoreFreePages ((EFI_PHYSICAL_ADDRESS) (UINTN) Buffer, Pages);
ASSERT_EFI_ERROR (Status);
}
/**
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
)
{
EFI_STATUS Status;
VOID *Memory;
Status = CoreAllocatePool (MemoryType, AllocationSize, &Memory);
if (EFI_ERROR (Status)) {
Memory = NULL;
}
return Memory;
}
/**
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
)
{
return InternalAllocatePool (EfiBootServicesData, AllocationSize);
}
/**
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
)
{
return InternalAllocatePool (EfiRuntimeServicesData, AllocationSize);
}
/**
Allocates a buffer of type EfieservedMemoryType.
Allocates the number bytes specified by AllocationSize of type EfieservedMemoryType 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
)
{
return InternalAllocatePool (EfiReservedMemoryType, 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
)
{
VOID *Memory;
Memory = InternalAllocatePool (PoolType, AllocationSize);
if (Memory != NULL) {
Memory = ZeroMem (Memory, AllocationSize);
}
return Memory;
}
/**
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
)
{
return InternalAllocateZeroPool (EfiBootServicesData, AllocationSize);
}
/**
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
)
{
return InternalAllocateZeroPool (EfiRuntimeServicesData, AllocationSize);
}
/**
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
)
{
return InternalAllocateZeroPool (EfiReservedMemoryType, 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
)
{
VOID *Memory;
ASSERT (Buffer != NULL);
ASSERT (AllocationSize <= (MAX_ADDRESS - (UINTN) Buffer + 1));
Memory = InternalAllocatePool (PoolType, AllocationSize);
if (Memory != NULL) {
Memory = CopyMem (Memory, Buffer, AllocationSize);
}
return Memory;
}
/**
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
)
{
return InternalAllocateCopyPool (EfiBootServicesData, AllocationSize, Buffer);
}
/**
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
)
{
return InternalAllocateCopyPool (EfiRuntimeServicesData, AllocationSize, Buffer);
}
/**
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
)
{
return InternalAllocateCopyPool (EfiReservedMemoryType, AllocationSize, Buffer);
}
/**
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 Buffer was not allocated with a pool allocation function in the Memory Allocation Library,
then ASSERT().
@param Buffer Pointer to the buffer to free.
**/
VOID
EFIAPI
FreePool (
IN VOID *Buffer
)
{
EFI_STATUS Status;
Status = CoreFreePool (Buffer);
ASSERT_EFI_ERROR (Status);
}