mirror of https://github.com/acidanthera/audk.git
905 lines
26 KiB
C
905 lines
26 KiB
C
/** @file
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Support routines for memory allocation routines for use with drivers.
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Copyright (c) 2006, Intel Corporation<BR>
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name: MemoryAllocationLib.c
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**/
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/**
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Allocates the number of 4KB pages specified by Pages of a certain memory type.
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@param MemoryType The type of memory to allocate.
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@param Pages The number of 4 KB pages to allocate.
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@return A pointer to the allocated buffer. The buffer returned is aligned on a 4KB boundary.
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If Pages is 0, then NULL is returned.
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If there is not enough memory remaining to satisfy the request, then NULL is returned.
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**/
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VOID *
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InternalAllocatePages (
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IN EFI_MEMORY_TYPE MemoryType,
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IN UINTN Pages
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)
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{
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EFI_STATUS Status;
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EFI_PHYSICAL_ADDRESS Memory;
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EFI_PEI_SERVICES **PeiServices;
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if (Pages == 0) {
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return NULL;
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}
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PeiServices = GetPeiServicesTablePointer ();
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Status = (*PeiServices)->AllocatePages (PeiServices, MemoryType, Pages, &Memory);
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if (EFI_ERROR (Status)) {
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Memory = 0;
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}
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return (VOID *) (UINTN) Memory;
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}
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/**
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Allocates the number of 4KB pages specified by Pages of type EfiBootServicesData.
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@param Pages The number of 4 KB pages to allocate.
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@return A pointer to the allocated buffer. The buffer returned is aligned on a 4KB boundary.
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If Pages is 0, then NULL is returned.
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If there is not enough memory remaining to satisfy the request, then NULL is returned.
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**/
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VOID *
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EFIAPI
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AllocatePages (
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IN UINTN Pages
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)
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{
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return InternalAllocatePages (EfiBootServicesData, Pages);
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}
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/**
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Allocates the number of 4KB pages specified by Pages of type EfiRuntimeServicesData.
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@param Pages The number of 4 KB pages to allocate.
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@return A pointer to the allocated buffer. The buffer returned is aligned on a 4KB boundary.
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If Pages is 0, then NULL is returned.
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If there is not enough memory remaining to satisfy the request, then NULL is returned.
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**/
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VOID *
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EFIAPI
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AllocateRuntimePages (
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IN UINTN Pages
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)
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{
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return InternalAllocatePages (EfiRuntimeServicesData, Pages);
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}
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/**
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Allocates the number of 4KB pages specified by Pages of type EfiReservedMemoryType.
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@param Pages The number of 4 KB pages to allocate.
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@return A pointer to the allocated buffer. The buffer returned is aligned on a 4KB boundary.
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If Pages is 0, then NULL is returned.
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If there is not enough memory remaining to satisfy the request, then NULL is returned.
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**/
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VOID *
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EFIAPI
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AllocateReservedPages (
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IN UINTN Pages
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)
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{
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return InternalAllocatePages (EfiReservedMemoryType, Pages);
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}
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/**
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Frees one or more 4KB pages that were previously allocated with
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one of the page allocation functions in the Memory Allocation Library.
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@param Buffer Pointer to the buffer of pages to free.
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@param Pages The number of 4 KB pages to free.
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**/
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VOID
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EFIAPI
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FreePages (
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IN VOID *Buffer,
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IN UINTN Pages
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)
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{
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//
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// PEI phase does not support to free pages, so leave it as NOP.
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//
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}
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/**
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Allocates the number of 4KB pages specified by Pages of a certian memory type
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with an alignment specified by Alignment.
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@param MemoryType The type of memory to allocate.
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@param Pages The number of 4 KB pages to allocate.
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@param Alignment The requested alignment of the allocation. Must be a power of two.
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If Alignment is zero, then byte alignment is used.
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@return The allocated buffer is returned. If Pages is 0, then NULL is returned.
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If there is not enough memory at the specified alignment remaining to satisfy the request, then NULL is returned.
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**/
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VOID *
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InternalAllocateAlignedPages (
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IN EFI_MEMORY_TYPE MemoryType,
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IN UINTN Pages,
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IN UINTN Alignment
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)
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{
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VOID *Memory;
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UINTN AlignmentMask;
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//
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// Alignment must be a power of two or zero.
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//
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ASSERT ((Alignment & (Alignment - 1)) == 0);
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if (Pages == 0) {
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return NULL;
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}
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//
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// Make sure that Pages plus EFI_SIZE_TO_PAGES (Alignment) does not overflow.
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//
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ASSERT (Pages <= (MAX_ADDRESS - EFI_SIZE_TO_PAGES (Alignment)));
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//
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// We would rather waste some memory to save PEI code size.
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//
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Memory = InternalAllocatePages (MemoryType, Pages + EFI_SIZE_TO_PAGES (Alignment));
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if (Alignment == 0) {
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AlignmentMask = Alignment;
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} else {
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AlignmentMask = Alignment - 1;
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}
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return (VOID *) (UINTN) (((UINTN) Memory + AlignmentMask) & ~AlignmentMask);
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}
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/**
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Allocates the number of 4KB pages specified by Pages of type EfiBootServicesData
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with an alignment specified by Alignment.
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@param Pages The number of 4 KB pages to allocate.
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@param Alignment The requested alignment of the allocation. Must be a power of two.
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If Alignment is zero, then byte alignment is used.
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@return The allocated buffer is returned. If Pages is 0, then NULL is returned.
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If there is not enough memory at the specified alignment remaining to satisfy the request, then NULL is returned.
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**/
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VOID *
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EFIAPI
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AllocateAlignedPages (
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IN UINTN Pages,
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IN UINTN Alignment
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)
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{
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return InternalAllocateAlignedPages (EfiBootServicesData, Pages, Alignment);
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}
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/**
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Allocates the number of 4KB pages specified by Pages of type EfiRuntimeServicesData
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with an alignment specified by Alignment.
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@param Pages The number of 4 KB pages to allocate.
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@param Alignment The requested alignment of the allocation. Must be a power of two.
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If Alignment is zero, then byte alignment is used.
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@return The allocated buffer is returned. If Pages is 0, then NULL is returned.
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If there is not enough memory at the specified alignment remaining to satisfy the request, then NULL is returned.
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**/
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VOID *
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EFIAPI
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AllocateAlignedRuntimePages (
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IN UINTN Pages,
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IN UINTN Alignment
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)
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{
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return InternalAllocateAlignedPages (EfiRuntimeServicesData, Pages, Alignment);
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}
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/**
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Allocates one or more 4KB pages of type EfiReservedMemoryType at a specified alignment.
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@param Pages The number of 4 KB pages to allocate.
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@param Alignment The requested alignment of the allocation. Must be a power of two.
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If Alignment is zero, then byte alignment is used.
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@return The allocated buffer is returned. If Pages is 0, then NULL is returned.
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If there is not enough memory at the specified alignment remaining to satisfy the request, then NULL is returned.
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**/
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VOID *
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EFIAPI
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AllocateAlignedReservedPages (
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IN UINTN Pages,
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IN UINTN Alignment
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)
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{
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return InternalAllocateAlignedPages (EfiReservedMemoryType, Pages, Alignment);
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}
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/**
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Frees one or more 4KB pages that were previously allocated with
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one of the aligned page allocation functions in the Memory Allocation Library.
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@param Buffer Pointer to the buffer of pages to free.
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@param Pages The number of 4 KB pages to free.
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**/
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VOID
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EFIAPI
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FreeAlignedPages (
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IN VOID *Buffer,
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IN UINTN Pages
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)
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{
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//
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// PEI phase does not support to free pages, so leave it as NOP.
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//
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}
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/**
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Allocates a buffer of a certain memory type.
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@param MemoryType The type of memory to allocate.
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@param AllocationSize The number of bytes to allocate.
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@return A pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned.
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If there is not enough memory remaining to satisfy the request, then NULL is returned.
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**/
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VOID *
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InternalAllocatePool (
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IN EFI_MEMORY_TYPE MemoryType,
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IN UINTN AllocationSize
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)
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{
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//
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// If we need lots of small runtime/reserved memory type from PEI in the future,
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// we can consider providing a more complex algorithm that allocates runtime pages and
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// provide pool allocations from those pages.
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//
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return InternalAllocatePages (MemoryType, EFI_SIZE_TO_PAGES (AllocationSize));
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}
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/**
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Allocates a buffer of type EfiBootServicesData.
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@param AllocationSize The number of bytes to allocate.
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@return A pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned.
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If there is not enough memory remaining to satisfy the request, then NULL is returned.
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**/
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VOID *
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EFIAPI
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AllocatePool (
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IN UINTN AllocationSize
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)
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{
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EFI_STATUS Status;
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EFI_PEI_SERVICES **PeiServices;
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VOID *Buffer;
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PeiServices = GetPeiServicesTablePointer ();
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Status = (*PeiServices)->AllocatePool (PeiServices, AllocationSize, &Buffer);
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if (EFI_ERROR (Status)) {
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Buffer = NULL;
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}
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return Buffer;
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}
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/**
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Allocates a buffer of type EfiRuntimeServicesData.
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@param AllocationSize The number of bytes to allocate.
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@return A pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned.
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If there is not enough memory remaining to satisfy the request, then NULL is returned.
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**/
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VOID *
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EFIAPI
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AllocateRuntimePool (
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IN UINTN AllocationSize
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)
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{
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return InternalAllocatePool (EfiRuntimeServicesData, AllocationSize);
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}
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/**
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Allocates a buffer of type EfiReservedMemoryType.
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@param AllocationSize The number of bytes to allocate.
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@return A pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned.
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If there is not enough memory remaining to satisfy the request, then NULL is returned.
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**/
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VOID *
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EFIAPI
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AllocateReservedPool (
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IN UINTN AllocationSize
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)
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{
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return InternalAllocatePool (EfiReservedMemoryType, AllocationSize);
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}
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/**
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Allocates and zeros a buffer of a certian pool type.
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@param PoolType The type of memory to allocate.
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@param AllocationSize The number of bytes to allocate and zero.
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@return A pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned.
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If there is not enough memory remaining to satisfy the request, then NULL is returned.
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**/
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VOID *
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InternalAllocateZeroPool (
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IN EFI_MEMORY_TYPE PoolType,
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IN UINTN AllocationSize
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)
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{
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VOID *Memory;
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Memory = InternalAllocatePool (PoolType, AllocationSize);
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if (Memory != NULL) {
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Memory = ZeroMem (Memory, AllocationSize);
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}
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return Memory;
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}
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/**
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Allocates and zeros a buffer of type EfiBootServicesData.
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@param AllocationSize The number of bytes to allocate and zero.
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@return A pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned.
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If there is not enough memory remaining to satisfy the request, then NULL is returned.
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**/
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VOID *
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EFIAPI
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AllocateZeroPool (
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IN UINTN AllocationSize
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)
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{
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VOID *Memory;
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Memory = AllocatePool (AllocationSize);
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if (Memory != NULL) {
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Memory = ZeroMem (Memory, AllocationSize);
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}
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return Memory;
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}
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/**
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Allocates and zeros a buffer of type EfiRuntimeServicesData.
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@param AllocationSize The number of bytes to allocate and zero.
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@return A pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned.
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If there is not enough memory remaining to satisfy the request, then NULL is returned.
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**/
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VOID *
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EFIAPI
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AllocateRuntimeZeroPool (
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IN UINTN AllocationSize
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)
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{
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return InternalAllocateZeroPool (EfiRuntimeServicesData, AllocationSize);
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}
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/**
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Allocates and zeros a buffer of type EfiReservedMemoryType.
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@param AllocationSize The number of bytes to allocate and zero.
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@return A pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned.
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If there is not enough memory remaining to satisfy the request, then NULL is returned.
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**/
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VOID *
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EFIAPI
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AllocateReservedZeroPool (
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IN UINTN AllocationSize
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)
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{
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return InternalAllocateZeroPool (EfiReservedMemoryType, AllocationSize);
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}
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/**
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Copies a buffer to an allocated buffer of a certian memory type.
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@param MemoryType The type of pool to allocate.
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@param AllocationSize The number of bytes to allocate and zero.
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@param Buffer The buffer to copy to the allocated buffer.
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@return A pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned.
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If there is not enough memory remaining to satisfy the request, then NULL is returned.
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**/
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VOID *
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InternalAllocateCopyPool (
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IN EFI_MEMORY_TYPE PoolType,
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IN UINTN AllocationSize,
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IN CONST VOID *Buffer
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)
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{
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VOID *Memory;
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ASSERT (Buffer != NULL);
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ASSERT (AllocationSize <= (MAX_ADDRESS - (UINTN) Buffer + 1));
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Memory = InternalAllocatePool (PoolType, AllocationSize);
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if (Memory != NULL) {
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Memory = CopyMem (Memory, Buffer, AllocationSize);
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}
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return Memory;
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}
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/**
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Copies a buffer to an allocated buffer of type EfiBootServicesData.
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@param AllocationSize The number of bytes to allocate.
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@param Buffer The buffer to copy to the allocated buffer.
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@return A pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned.
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If there is not enough memory remaining to satisfy the request, then NULL is returned.
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**/
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VOID *
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EFIAPI
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AllocateCopyPool (
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IN UINTN AllocationSize,
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IN CONST VOID *Buffer
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)
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{
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VOID *Memory;
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ASSERT (Buffer != NULL);
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ASSERT (AllocationSize <= (MAX_ADDRESS - (UINTN) Buffer + 1));
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Memory = AllocatePool (AllocationSize);
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if (Memory != NULL) {
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Memory = CopyMem (Memory, Buffer, AllocationSize);
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}
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return Memory;
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}
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|
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/**
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Copies a buffer to an allocated buffer of type EfiRuntimeServicesData.
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|
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|
@param AllocationSize The number of bytes to allocate.
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@param Buffer The buffer to copy to the allocated buffer.
|
|
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|
@return A pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned.
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|
If there is not enough memory remaining to satisfy the request, then NULL is returned.
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|
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|
**/
|
|
VOID *
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EFIAPI
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AllocateRuntimeCopyPool (
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IN UINTN AllocationSize,
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IN CONST VOID *Buffer
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)
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{
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return InternalAllocateCopyPool (EfiRuntimeServicesData, AllocationSize, Buffer);
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}
|
|
|
|
/**
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Copies a buffer to an allocated buffer of type EfiReservedMemoryType.
|
|
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|
@param AllocationSize The number of bytes to allocate.
|
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@param Buffer The buffer to copy to the allocated buffer.
|
|
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|
@return A pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned.
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|
If there is not enough memory remaining to satisfy the request, then NULL is returned.
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|
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|
**/
|
|
VOID *
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EFIAPI
|
|
AllocateReservedCopyPool (
|
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IN UINTN AllocationSize,
|
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IN CONST VOID *Buffer
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)
|
|
{
|
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return InternalAllocateCopyPool (EfiReservedMemoryType, AllocationSize, Buffer);
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}
|
|
|
|
/**
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Copies a buffer to an allocated buffer of type EfiReservedMemoryType at a specified alignment.
|
|
|
|
@param Buffer Pointer to the buffer to free.
|
|
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|
**/
|
|
VOID
|
|
EFIAPI
|
|
FreePool (
|
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IN VOID *Buffer
|
|
)
|
|
{
|
|
//
|
|
// PEI phase does not support to free pool, so leave it as NOP.
|
|
//
|
|
}
|
|
|
|
/**
|
|
Allocates a buffer of a certain pool type at a specified alignment.
|
|
|
|
@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. 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.
|
|
|
|
**/
|
|
VOID *
|
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InternalAllocateAlignedPool (
|
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IN EFI_MEMORY_TYPE PoolType,
|
|
IN UINTN AllocationSize,
|
|
IN UINTN Alignment
|
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)
|
|
{
|
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VOID *RawAddress;
|
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UINTN AlignedAddress;
|
|
UINTN AlignmentMask;
|
|
|
|
//
|
|
// Alignment must be a power of two or zero.
|
|
//
|
|
ASSERT ((Alignment & (Alignment - 1)) == 0);
|
|
|
|
if (Alignment == 0) {
|
|
AlignmentMask = Alignment;
|
|
} else {
|
|
AlignmentMask = Alignment - 1;
|
|
}
|
|
//
|
|
// Make sure that AllocationSize plus AlignmentMask does not overflow.
|
|
//
|
|
ASSERT (AllocationSize <= (MAX_ADDRESS - AlignmentMask));
|
|
|
|
RawAddress = InternalAllocatePool (PoolType, AllocationSize + AlignmentMask);
|
|
|
|
AlignedAddress = ((UINTN) RawAddress + AlignmentMask) & ~AlignmentMask;
|
|
|
|
return (VOID *) AlignedAddress;
|
|
}
|
|
|
|
/**
|
|
Allocates a buffer of type EfiBootServicesData at a specified alignment.
|
|
|
|
@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. 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.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
AllocateAlignedPool (
|
|
IN UINTN AllocationSize,
|
|
IN UINTN Alignment
|
|
)
|
|
{
|
|
VOID *RawAddress;
|
|
UINTN AlignedAddress;
|
|
UINTN AlignmentMask;
|
|
|
|
//
|
|
// Alignment must be a power of two or zero.
|
|
//
|
|
ASSERT ((Alignment & (Alignment - 1)) == 0);
|
|
|
|
if (Alignment == 0) {
|
|
AlignmentMask = Alignment;
|
|
} else {
|
|
AlignmentMask = Alignment - 1;
|
|
}
|
|
|
|
//
|
|
// Make sure that AllocationSize plus AlignmentMask does not overflow.
|
|
//
|
|
ASSERT (AllocationSize <= (MAX_ADDRESS - AlignmentMask));
|
|
|
|
RawAddress = AllocatePool (AllocationSize + AlignmentMask);
|
|
|
|
AlignedAddress = ((UINTN) RawAddress + AlignmentMask) & ~AlignmentMask;
|
|
|
|
return (VOID *) AlignedAddress;
|
|
}
|
|
|
|
/**
|
|
Allocates a buffer of type EfiRuntimeServicesData at a specified alignment.
|
|
|
|
@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. 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.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
AllocateAlignedRuntimePool (
|
|
IN UINTN AllocationSize,
|
|
IN UINTN Alignment
|
|
)
|
|
{
|
|
return InternalAllocateAlignedPool (EfiRuntimeServicesData, AllocationSize, Alignment);
|
|
}
|
|
|
|
/**
|
|
Allocates a buffer of type EfiReservedMemoryType at a specified alignment.
|
|
|
|
@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. 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.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
AllocateAlignedReservedPool (
|
|
IN UINTN AllocationSize,
|
|
IN UINTN Alignment
|
|
)
|
|
{
|
|
return InternalAllocateAlignedPool (EfiReservedMemoryType, AllocationSize, Alignment);
|
|
}
|
|
|
|
/**
|
|
Allocates and zeros a buffer of type EfiBootServicesData at a specified alignment.
|
|
|
|
@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. 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.
|
|
|
|
**/
|
|
VOID *
|
|
InternalAllocateAlignedZeroPool (
|
|
IN EFI_MEMORY_TYPE PoolType,
|
|
IN UINTN AllocationSize,
|
|
IN UINTN Alignment
|
|
)
|
|
{
|
|
VOID *Memory;
|
|
|
|
Memory = InternalAllocateAlignedPool (PoolType, AllocationSize, Alignment);
|
|
if (Memory != NULL) {
|
|
Memory = ZeroMem (Memory, AllocationSize);
|
|
}
|
|
return Memory;
|
|
}
|
|
|
|
/**
|
|
Allocates and zeros a buffer of type EfiBootServicesData at a specified alignment.
|
|
|
|
@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. 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.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
AllocateAlignedZeroPool (
|
|
IN UINTN AllocationSize,
|
|
IN UINTN Alignment
|
|
)
|
|
{
|
|
VOID *Memory;
|
|
|
|
Memory = AllocateAlignedPool (AllocationSize, Alignment);
|
|
if (Memory != NULL) {
|
|
Memory = ZeroMem (Memory, AllocationSize);
|
|
}
|
|
return Memory;
|
|
}
|
|
|
|
/**
|
|
Allocates and zeros a buffer of type EfiRuntimeServicesData at a specified alignment.
|
|
|
|
@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. 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.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
AllocateAlignedRuntimeZeroPool (
|
|
IN UINTN AllocationSize,
|
|
IN UINTN Alignment
|
|
)
|
|
{
|
|
return InternalAllocateAlignedZeroPool (EfiRuntimeServicesData, AllocationSize, Alignment);
|
|
}
|
|
|
|
/**
|
|
Allocates and zeros a buffer of type EfiReservedMemoryType at a specified alignment.
|
|
|
|
@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. 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.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
AllocateAlignedReservedZeroPool (
|
|
IN UINTN AllocationSize,
|
|
IN UINTN Alignment
|
|
)
|
|
{
|
|
return InternalAllocateAlignedZeroPool (EfiReservedMemoryType, AllocationSize, Alignment);
|
|
}
|
|
|
|
/**
|
|
Copies a buffer to an allocated buffer of type EfiBootServicesData at a specified alignment.
|
|
|
|
@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. 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.
|
|
|
|
**/
|
|
VOID *
|
|
InternalAllocateAlignedCopyPool (
|
|
IN EFI_MEMORY_TYPE PoolType,
|
|
IN UINTN AllocationSize,
|
|
IN CONST VOID *Buffer,
|
|
IN UINTN Alignment
|
|
)
|
|
{
|
|
VOID *Memory;
|
|
|
|
ASSERT (Buffer != NULL);
|
|
ASSERT (AllocationSize <= (MAX_ADDRESS - (UINTN) Buffer + 1));
|
|
|
|
Memory = InternalAllocateAlignedPool (PoolType, AllocationSize, Alignment);
|
|
if (Memory != NULL) {
|
|
Memory = CopyMem (Memory, Buffer, AllocationSize);
|
|
}
|
|
return Memory;
|
|
}
|
|
|
|
/**
|
|
Copies a buffer to an allocated buffer of type EfiBootServicesData at a specified alignment.
|
|
|
|
@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. 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.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
AllocateAlignedCopyPool (
|
|
IN UINTN AllocationSize,
|
|
IN CONST VOID *Buffer,
|
|
IN UINTN Alignment
|
|
)
|
|
{
|
|
VOID *Memory;
|
|
|
|
ASSERT (Buffer != NULL);
|
|
ASSERT (AllocationSize <= (MAX_ADDRESS - (UINTN) Buffer + 1));
|
|
|
|
Memory = AllocateAlignedPool (AllocationSize, Alignment);
|
|
if (Memory != NULL) {
|
|
Memory = CopyMem (Memory, Buffer, AllocationSize);
|
|
}
|
|
return Memory;
|
|
}
|
|
|
|
/**
|
|
Copies a buffer to an allocated buffer of type EfiRuntimeServicesData at a specified alignment.
|
|
|
|
@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. 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.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
AllocateAlignedRuntimeCopyPool (
|
|
IN UINTN AllocationSize,
|
|
IN CONST VOID *Buffer,
|
|
IN UINTN Alignment
|
|
)
|
|
{
|
|
return InternalAllocateAlignedCopyPool (EfiRuntimeServicesData, AllocationSize, Buffer, Alignment);
|
|
}
|
|
|
|
/**
|
|
Copies a buffer to an allocated buffer of type EfiReservedMemoryType at a specified alignment.
|
|
|
|
@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. 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.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
AllocateAlignedReservedCopyPool (
|
|
IN UINTN AllocationSize,
|
|
IN CONST VOID *Buffer,
|
|
IN UINTN Alignment
|
|
)
|
|
{
|
|
return InternalAllocateAlignedCopyPool (EfiReservedMemoryType, AllocationSize, Buffer, Alignment);
|
|
}
|
|
|
|
/**
|
|
Frees a buffer that was previously allocated with one of the aligned pool allocation functions
|
|
in the Memory Allocation Library.
|
|
|
|
@param Buffer Pointer to the buffer to free.
|
|
|
|
**/
|
|
VOID
|
|
EFIAPI
|
|
FreeAlignedPool (
|
|
IN VOID *Buffer
|
|
)
|
|
{
|
|
//
|
|
// PEI phase does not support to free pool, so leave it as NOP.
|
|
//
|
|
}
|