diff options
Diffstat (limited to 'OldMdePkg/Library/PeiMemoryAllocationLib/MemoryAllocationLib.c')
| -rw-r--r-- | OldMdePkg/Library/PeiMemoryAllocationLib/MemoryAllocationLib.c | 1074 |
1 files changed, 0 insertions, 1074 deletions
diff --git a/OldMdePkg/Library/PeiMemoryAllocationLib/MemoryAllocationLib.c b/OldMdePkg/Library/PeiMemoryAllocationLib/MemoryAllocationLib.c deleted file mode 100644 index ece64d3dd7..0000000000 --- a/OldMdePkg/Library/PeiMemoryAllocationLib/MemoryAllocationLib.c +++ /dev/null @@ -1,1074 +0,0 @@ -/** @file
- Support routines for memory allocation routines for use with drivers.
-
- Copyright (c) 2006, 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.
-
- Module Name: MemoryAllocationLib.c
-
-**/
-
-#include "MemoryAllocationLibInternals.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;
- EFI_PEI_SERVICES **PeiServices;
-
- if (Pages == 0) {
- return NULL;
- }
-
- PeiServices = GetPeiServicesTablePointer ();
- Status = (*PeiServices)->AllocatePages (PeiServices, MemoryType, Pages, &Memory);
- if (EFI_ERROR (Status)) {
- Memory = 0;
- }
- 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
- )
-{
- //
- // PEI phase does not support to free pages, so leave it as NOP.
- //
-}
-
-/**
- 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
- )
-{
- VOID *Memory;
- UINTN AlignmentMask;
-
- //
- // Alignment must be a power of two or zero.
- //
- ASSERT ((Alignment & (Alignment - 1)) == 0);
-
- if (Pages == 0) {
- return NULL;
- }
- //
- // Make sure that Pages plus EFI_SIZE_TO_PAGES (Alignment) does not overflow.
- //
- ASSERT (Pages <= (MAX_ADDRESS - EFI_SIZE_TO_PAGES (Alignment)));
- //
- // We would rather waste some memory to save PEI code size.
- //
- Memory = InternalAllocatePages (MemoryType, Pages + EFI_SIZE_TO_PAGES (Alignment));
- if (Alignment == 0) {
- AlignmentMask = Alignment;
- } else {
- AlignmentMask = Alignment - 1;
- }
- return (VOID *) (UINTN) (((UINTN) Memory + AlignmentMask) & ~AlignmentMask);
-}
-
-/**
- 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
- )
-{
- //
- // PEI phase does not support to free pages, so leave it as NOP.
- //
-}
-
-/**
- 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
- )
-{
- //
- // If we need lots of small runtime/reserved memory type from PEI in the future,
- // we can consider providing a more complex algorithm that allocates runtime pages and
- // provide pool allocations from those pages.
- //
- return InternalAllocatePages (MemoryType, EFI_SIZE_TO_PAGES (AllocationSize));
-}
-
-/**
- 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
- )
-{
- EFI_STATUS Status;
- EFI_PEI_SERVICES **PeiServices;
- VOID *Buffer;
-
- PeiServices = GetPeiServicesTablePointer ();
-
- Status = (*PeiServices)->AllocatePool (PeiServices, AllocationSize, &Buffer);
- if (EFI_ERROR (Status)) {
- Buffer = NULL;
- }
- return Buffer;
-}
-
-/**
- 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
- )
-{
- VOID *Memory;
-
- Memory = AllocatePool (AllocationSize);
- if (Memory != NULL) {
- Memory = ZeroMem (Memory, AllocationSize);
- }
- return Memory;
-}
-
-/**
- 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
- )
-{
- VOID *Memory;
-
- ASSERT (Buffer != NULL);
- ASSERT (AllocationSize <= (MAX_ADDRESS - (UINTN) Buffer + 1));
-
- Memory = AllocatePool (AllocationSize);
- if (Memory != NULL) {
- Memory = CopyMem (Memory, Buffer, AllocationSize);
- }
- return Memory;
-}
-
-/**
- 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
- )
-{
- //
- // 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.
-
- 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
- )
-{
- 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 = InternalAllocatePool (PoolType, AllocationSize + AlignmentMask);
-
- AlignedAddress = ((UINTN) RawAddress + AlignmentMask) & ~AlignmentMask;
-
- return (VOID *) AlignedAddress;
-}
-
-/**
- Allocates a buffer of type EfiBootServicesData at a specified alignment.
-
- Allocates the number bytes specified by AllocationSize of type EfiBootServicesData 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 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 *
-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.
-
- Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData 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 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 *
-EFIAPI
-AllocateAlignedRuntimePool (
- IN UINTN AllocationSize,
- IN UINTN Alignment
- )
-{
- return InternalAllocateAlignedPool (EfiRuntimeServicesData, AllocationSize, Alignment);
-}
-
-/**
- Allocates a buffer of type EfieservedMemoryType at a specified alignment.
-
- Allocates the number bytes specified by AllocationSize of type EfieservedMemoryType 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 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 *
-EFIAPI
-AllocateAlignedReservedPool (
- IN UINTN AllocationSize,
- IN UINTN Alignment
- )
-{
- return InternalAllocateAlignedPool (EfiReservedMemoryType, AllocationSize, 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
- )
-{
- 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.
-
- Allocates the number bytes specified by AllocationSize of type EfiBootServicesData 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 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 *
-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.
-
- Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData 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 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 *
-EFIAPI
-AllocateAlignedRuntimeZeroPool (
- IN UINTN AllocationSize,
- IN UINTN Alignment
- )
-{
- return InternalAllocateAlignedZeroPool (EfiRuntimeServicesData, AllocationSize, Alignment);
-}
-
-/**
- Allocates and zeros a buffer of type EfieservedMemoryType at a specified alignment.
-
- Allocates the number bytes specified by AllocationSize of type EfieservedMemoryType 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 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 *
-EFIAPI
-AllocateAlignedReservedZeroPool (
- IN UINTN AllocationSize,
- IN UINTN Alignment
- )
-{
- return InternalAllocateAlignedZeroPool (EfiReservedMemoryType, AllocationSize, 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
- )
-{
- 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.
-
- Allocates the number bytes specified by AllocationSize of type EfiBootServicesData 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 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 *
-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.
-
- Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData 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 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 *
-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.
-
- Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType 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 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 *
-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.
-
- Frees the buffer specified by Buffer. Buffer must have been allocated on a previous call to the
- aligned pool allocation services of the Memory Allocation Library.
- If Buffer was not allocated with an aligned pool allocation function in the Memory Allocation
- Library, then ASSERT().
-
- @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.
- //
-}
|