diff options
Diffstat (limited to 'MdePkg/Library/PeiMemoryAllocationLib/MemoryAllocationLib.c')
| -rw-r--r-- | MdePkg/Library/PeiMemoryAllocationLib/MemoryAllocationLib.c | 938 |
1 files changed, 0 insertions, 938 deletions
diff --git a/MdePkg/Library/PeiMemoryAllocationLib/MemoryAllocationLib.c b/MdePkg/Library/PeiMemoryAllocationLib/MemoryAllocationLib.c deleted file mode 100644 index a6cce6c235..0000000000 --- a/MdePkg/Library/PeiMemoryAllocationLib/MemoryAllocationLib.c +++ /dev/null @@ -1,938 +0,0 @@ -/** @file
- Support routines for memory allocation routines
- based on PeiService for PEI phase drivers.
-
- Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>
- 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 <PiPei.h>
-
-
-#include <Library/MemoryAllocationLib.h>
-#include <Library/PeiServicesLib.h>
-#include <Library/BaseMemoryLib.h>
-#include <Library/DebugLib.h>
-#include <Library/HobLib.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 = PeiServicesAllocatePages (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 it is not possible to free allocated pages, then this function will
- perform no actions.
-
- 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 The 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
- )
-{
- ASSERT (Pages != 0);
- //
- // 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().
- If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, 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_PHYSICAL_ADDRESS Memory;
- EFI_PHYSICAL_ADDRESS AlignedMemory;
- EFI_PEI_HOB_POINTERS Hob;
- BOOLEAN SkipBeforeMemHob;
- BOOLEAN SkipAfterMemHob;
- EFI_PHYSICAL_ADDRESS HobBaseAddress;
- UINT64 HobLength;
- EFI_MEMORY_TYPE HobMemoryType;
- UINTN TotalPages;
-
- //
- // 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.
- // meaning in addition to the requested size for the aligned mem,
- // we simply reserve an overhead memory equal to Alignmemt(page-aligned), no matter what.
- // The overhead mem size could be reduced later with more involved malloc mechanisms
- // (e.g., somthing that can detect the alignment boundary before allocating memory or
- // can request that memory be allocated at a certain address that is aleady aligned).
- //
- TotalPages = Pages + (Alignment <= EFI_PAGE_SIZE ? 0 : EFI_SIZE_TO_PAGES(Alignment));
- Memory = (EFI_PHYSICAL_ADDRESS) (UINTN) InternalAllocatePages (MemoryType, TotalPages);
- if (Memory == 0) {
- DEBUG((DEBUG_INFO, "Out of memory resource! \n"));
- return NULL;
- }
- DEBUG ((DEBUG_INFO, "Allocated Memory unaligned: Address = 0x%LX, Pages = 0x%X, Type = %d \n", Memory, TotalPages, (UINTN) MemoryType));
-
- //
- // Alignment calculation
- //
- AlignedMemory = Memory;
- if (Alignment > EFI_PAGE_SIZE) {
- AlignedMemory = ALIGN_VALUE (Memory, Alignment);
- }
- DEBUG ((DEBUG_INFO, "After aligning to 0x%X bytes: Address = 0x%LX, Pages = 0x%X \n", Alignment, AlignedMemory, Pages));
-
- //
- // In general three HOBs cover the total allocated space.
- // The aligned portion is covered by the aligned mem HOB and
- // the unaligned(to be freed) portions before and after the aligned portion are covered by newly created HOBs.
- //
- // Before mem HOB covers the region between "Memory" and "AlignedMemory"
- // Aligned mem HOB covers the region between "AlignedMemory" and "AlignedMemory + EFI_PAGES_TO_SIZE(Pages)"
- // After mem HOB covers the region between "AlignedMemory + EFI_PAGES_TO_SIZE(Pages)" and "Memory + EFI_PAGES_TO_SIZE(TotalPages)"
- //
- // The before or after mem HOBs need to be skipped under special cases where the aligned portion
- // touches either the top or bottom of the original allocated space.
- //
- SkipBeforeMemHob = FALSE;
- SkipAfterMemHob = FALSE;
- if (Memory == AlignedMemory) {
- SkipBeforeMemHob = TRUE;
- }
- if ((Memory + EFI_PAGES_TO_SIZE(TotalPages)) == (AlignedMemory + EFI_PAGES_TO_SIZE(Pages))) {
- //
- // This condition is never met in the current implementation.
- // There is always some after-mem since the overhead mem(used in TotalPages)
- // is no less than Alignment.
- //
- SkipAfterMemHob = TRUE;
- }
-
- //
- // Search for the mem HOB referring to the original(unaligned) allocation
- // and update the size and type if needed.
- //
- Hob.Raw = GetFirstHob (EFI_HOB_TYPE_MEMORY_ALLOCATION);
- while (Hob.Raw != NULL) {
- if (Hob.MemoryAllocation->AllocDescriptor.MemoryBaseAddress == Memory) {
- break;
- }
- Hob.Raw = GET_NEXT_HOB (Hob);
- Hob.Raw = GetNextHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, Hob.Raw);
- }
- ASSERT (Hob.Raw != NULL);
- if (SkipBeforeMemHob) {
- //
- // Use this HOB as aligned mem HOB as there is no portion before it.
- //
- HobLength = EFI_PAGES_TO_SIZE(Pages);
- Hob.MemoryAllocation->AllocDescriptor.MemoryLength = HobLength;
- } else {
- //
- // Use this HOB as before mem HOB and create a new HOB for the aligned portion
- //
- HobLength = (AlignedMemory - Memory);
- Hob.MemoryAllocation->AllocDescriptor.MemoryLength = HobLength;
- Hob.MemoryAllocation->AllocDescriptor.MemoryType = EfiConventionalMemory;
- }
-
- HobBaseAddress = Hob.MemoryAllocation->AllocDescriptor.MemoryBaseAddress;
- HobMemoryType = Hob.MemoryAllocation->AllocDescriptor.MemoryType;
-
- //
- // Build the aligned mem HOB if needed
- //
- if (!SkipBeforeMemHob) {
- DEBUG((DEBUG_INFO, "Updated before-mem HOB with BaseAddress = %LX, Length = %LX, MemoryType = %d \n",
- HobBaseAddress, HobLength, (UINTN) HobMemoryType));
-
- HobBaseAddress = AlignedMemory;
- HobLength = EFI_PAGES_TO_SIZE(Pages);
- HobMemoryType = MemoryType;
-
- BuildMemoryAllocationHob (
- HobBaseAddress,
- HobLength,
- HobMemoryType
- );
-
- DEBUG((DEBUG_INFO, "Created aligned-mem HOB with BaseAddress = %LX, Length = %LX, MemoryType = %d \n",
- HobBaseAddress, HobLength, (UINTN) HobMemoryType));
- } else {
- if (HobBaseAddress != 0) {
- DEBUG((DEBUG_INFO, "Updated aligned-mem HOB with BaseAddress = %LX, Length = %LX, MemoryType = %d \n",
- HobBaseAddress, HobLength, (UINTN) HobMemoryType));
- }
- }
-
-
- //
- // Build the after mem HOB if needed
- //
- if (!SkipAfterMemHob) {
- HobBaseAddress = AlignedMemory + EFI_PAGES_TO_SIZE(Pages);
- HobLength = (Memory + EFI_PAGES_TO_SIZE(TotalPages)) - (AlignedMemory + EFI_PAGES_TO_SIZE(Pages));
- HobMemoryType = EfiConventionalMemory;
-
- BuildMemoryAllocationHob (
- HobBaseAddress,
- HobLength,
- HobMemoryType
- );
-
- DEBUG((DEBUG_INFO, "Created after-mem HOB with BaseAddress = %LX, Length = %LX, MemoryType = %d \n",
- HobBaseAddress, HobLength, (UINTN) HobMemoryType));
- }
-
- return (VOID *) (UINTN) 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().
- If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, 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().
- If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, 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().
- If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, 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 it is not possible to free allocated pages, then this function will
- perform no actions.
-
- 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 The 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
- )
-{
- ASSERT (Pages != 0);
- //
- // 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;
- VOID *Buffer;
-
- Status = PeiServicesAllocatePool (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 EfiReservedMemoryType.
-
- Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType 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 certain pool type.
-
- Allocates the number bytes specified by AllocationSize of a certain 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 certain pool type.
-
- Allocates the number bytes specified by AllocationSize of a certain 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);
-}
-
-/**
- Reallocates a buffer of a specified memory type.
-
- Allocates and zeros the number bytes specified by NewSize from memory of the type
- specified by PoolType. If OldBuffer is not NULL, then the smaller of OldSize and
- NewSize bytes are copied from OldBuffer to the newly allocated buffer, and
- OldBuffer is freed. A pointer to the newly allocated buffer is returned.
- If NewSize 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 the allocation of the new buffer is successful and the smaller of NewSize and OldSize
- is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().
-
- @param PoolType The type of pool to allocate.
- @param OldSize The size, in bytes, of OldBuffer.
- @param NewSize The size, in bytes, of the buffer to reallocate.
- @param OldBuffer The buffer to copy to the allocated buffer. This is an
- optional parameter that may be NULL.
-
- @return A pointer to the allocated buffer or NULL if allocation fails.
-
-**/
-VOID *
-InternalReallocatePool (
- IN EFI_MEMORY_TYPE PoolType,
- IN UINTN OldSize,
- IN UINTN NewSize,
- IN VOID *OldBuffer OPTIONAL
- )
-{
- VOID *NewBuffer;
-
- NewBuffer = InternalAllocateZeroPool (PoolType, NewSize);
- if (NewBuffer != NULL && OldBuffer != NULL) {
- CopyMem (NewBuffer, OldBuffer, MIN (OldSize, NewSize));
- FreePool (OldBuffer);
- }
- return NewBuffer;
-}
-
-/**
- Reallocates a buffer of type EfiBootServicesData.
-
- Allocates and zeros the number bytes specified by NewSize from memory of type
- EfiBootServicesData. If OldBuffer is not NULL, then the smaller of OldSize and
- NewSize bytes are copied from OldBuffer to the newly allocated buffer, and
- OldBuffer is freed. A pointer to the newly allocated buffer is returned.
- If NewSize 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 the allocation of the new buffer is successful and the smaller of NewSize and OldSize
- is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().
-
- @param OldSize The size, in bytes, of OldBuffer.
- @param NewSize The size, in bytes, of the buffer to reallocate.
- @param OldBuffer The buffer to copy to the allocated buffer. This is an optional
- parameter that may be NULL.
-
- @return A pointer to the allocated buffer or NULL if allocation fails.
-
-**/
-VOID *
-EFIAPI
-ReallocatePool (
- IN UINTN OldSize,
- IN UINTN NewSize,
- IN VOID *OldBuffer OPTIONAL
- )
-{
- return InternalReallocatePool (EfiBootServicesData, OldSize, NewSize, OldBuffer);
-}
-
-/**
- Reallocates a buffer of type EfiRuntimeServicesData.
-
- Allocates and zeros the number bytes specified by NewSize from memory of type
- EfiRuntimeServicesData. If OldBuffer is not NULL, then the smaller of OldSize and
- NewSize bytes are copied from OldBuffer to the newly allocated buffer, and
- OldBuffer is freed. A pointer to the newly allocated buffer is returned.
- If NewSize 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 the allocation of the new buffer is successful and the smaller of NewSize and OldSize
- is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().
-
- @param OldSize The size, in bytes, of OldBuffer.
- @param NewSize The size, in bytes, of the buffer to reallocate.
- @param OldBuffer The buffer to copy to the allocated buffer. This is an optional
- parameter that may be NULL.
-
- @return A pointer to the allocated buffer or NULL if allocation fails.
-
-**/
-VOID *
-EFIAPI
-ReallocateRuntimePool (
- IN UINTN OldSize,
- IN UINTN NewSize,
- IN VOID *OldBuffer OPTIONAL
- )
-{
- return InternalReallocatePool (EfiRuntimeServicesData, OldSize, NewSize, OldBuffer);
-}
-
-/**
- Reallocates a buffer of type EfiReservedMemoryType.
-
- Allocates and zeros the number bytes specified by NewSize from memory of type
- EfiReservedMemoryType. If OldBuffer is not NULL, then the smaller of OldSize and
- NewSize bytes are copied from OldBuffer to the newly allocated buffer, and
- OldBuffer is freed. A pointer to the newly allocated buffer is returned.
- If NewSize 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 the allocation of the new buffer is successful and the smaller of NewSize and OldSize
- is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().
-
- @param OldSize The size, in bytes, of OldBuffer.
- @param NewSize The size, in bytes, of the buffer to reallocate.
- @param OldBuffer The buffer to copy to the allocated buffer. This is an
- optional parameter that may be NULL.
-
- @return A pointer to the allocated buffer or NULL if allocation fails.
-
-**/
-VOID *
-EFIAPI
-ReallocateReservedPool (
- IN UINTN OldSize,
- IN UINTN NewSize,
- IN VOID *OldBuffer OPTIONAL
- )
-{
- return InternalReallocatePool (EfiReservedMemoryType, OldSize, NewSize, OldBuffer);
-}
-
-/**
- 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 it is not possible to free pool
- resources, then this function will perform no actions.
-
- If Buffer was not allocated with a pool allocation function in the Memory Allocation Library,
- then ASSERT().
-
- @param Buffer The 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.
- //
-}
-
-
|