-/** @file
- Implementation of the 6 PEI Ffs (FV) APIs in library form.
-
- Copyright (c) 2008 - 2009, Apple Inc. 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/BaseLib.h>
-#include <Library/PrePiLib.h>
-#include <Library/DebugLib.h>
-
-
-
-/**
- Allocates one or more 4KB pages of type EfiBootServicesData.
-
- Allocates the number of 4KB pages of MemoryType 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
- )
-{
- EFI_PEI_HOB_POINTERS Hob;
- EFI_PHYSICAL_ADDRESS Offset;
-
- Hob.Raw = GetHobList ();
-
- // Check to see if on 4k boundary
- Offset = Hob.HandoffInformationTable->EfiFreeMemoryTop & 0xFFF;
- if (Offset != 0) {
- // If not aligned, make the allocation aligned.
- Hob.HandoffInformationTable->EfiFreeMemoryTop -= Offset;
- }
-
- //
- // Verify that there is sufficient memory to satisfy the allocation
- //
- if (Hob.HandoffInformationTable->EfiFreeMemoryTop - ((Pages * EFI_PAGE_SIZE) + sizeof (EFI_HOB_MEMORY_ALLOCATION)) < Hob.HandoffInformationTable->EfiFreeMemoryBottom) {
- return 0;
- } else {
- //
- // Update the PHIT to reflect the memory usage
- //
- Hob.HandoffInformationTable->EfiFreeMemoryTop -= Pages * EFI_PAGE_SIZE;
-
- // This routine used to create a memory allocation HOB a la PEI, but that's not
- // necessary for us.
-
- //
- // Create a memory allocation HOB.
- //
- BuildMemoryAllocationHob (
- Hob.HandoffInformationTable->EfiFreeMemoryTop,
- Pages * EFI_PAGE_SIZE,
- EfiBootServicesData
- );
- return (VOID *)(UINTN)Hob.HandoffInformationTable->EfiFreeMemoryTop;
- }
-}
-
-
-/**
- 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
- )
-{
- 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 = (VOID *)(UINTN)AllocatePages (Pages + EFI_SIZE_TO_PAGES (Alignment));
- if (Alignment == 0) {
- AlignmentMask = Alignment;
- } else {
- AlignmentMask = Alignment - 1;
- }
- return (VOID *) (UINTN) (((UINTN) Memory + AlignmentMask) & ~AlignmentMask);
-}
-
-
-
-
-/**
- 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_HOB_MEMORY_POOL *Hob;
-
- Hob = GetHobList ();
-
-
- //
- // Verify that there is sufficient memory to satisfy the allocation
- //
- if (AllocationSize > 0x10000) {
- // Please call AllcoatePages for big allocations
- return 0;
- } else {
-
- Hob = (EFI_HOB_MEMORY_POOL *)CreateHob (EFI_HOB_TYPE_MEMORY_POOL, (UINT16)(sizeof (EFI_HOB_TYPE_MEMORY_POOL) + AllocationSize));
- return (VOID *)(Hob + 1);
- }
-}
-
-/**
- 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 Pointer to the buffer to free.
-
-**/
-VOID
-EFIAPI
-FreePool (
- IN VOID *Buffer
- )
-{
- // Not implemented yet
-}
+/** @file\r
+ Implementation of the 6 PEI Ffs (FV) APIs in library form.\r
+\r
+ Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r
+ \r
+ This program and the accompanying materials\r
+ are licensed and made available under the terms and conditions of the BSD License\r
+ which accompanies this distribution. The full text of the license may be found at\r
+ http://opensource.org/licenses/bsd-license.php\r
+\r
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+**/\r
+\r
+#include <PiPei.h>\r
+\r
+#include <Library/BaseLib.h>\r
+#include <Library/PrePiLib.h>\r
+#include <Library/DebugLib.h>\r
+\r
+\r
+\r
+/**\r
+ Allocates one or more 4KB pages of type EfiBootServicesData.\r
+\r
+ Allocates the number of 4KB pages of MemoryType and returns a pointer to the\r
+ allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL\r
+ is returned. If there is not enough memory remaining to satisfy the request, then NULL is\r
+ returned.\r
+\r
+ @param Pages The number of 4 KB pages to allocate.\r
+\r
+ @return A pointer to the allocated buffer or NULL if allocation fails.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+AllocatePages (\r
+ IN UINTN Pages\r
+ )\r
+{\r
+ EFI_PEI_HOB_POINTERS Hob;\r
+ EFI_PHYSICAL_ADDRESS Offset;\r
+\r
+ Hob.Raw = GetHobList ();\r
+\r
+ // Check to see if on 4k boundary\r
+ Offset = Hob.HandoffInformationTable->EfiFreeMemoryTop & 0xFFF;\r
+ if (Offset != 0) {\r
+ // If not aligned, make the allocation aligned.\r
+ Hob.HandoffInformationTable->EfiFreeMemoryTop -= Offset;\r
+ }\r
+\r
+ //\r
+ // Verify that there is sufficient memory to satisfy the allocation\r
+ //\r
+ if (Hob.HandoffInformationTable->EfiFreeMemoryTop - ((Pages * EFI_PAGE_SIZE) + sizeof (EFI_HOB_MEMORY_ALLOCATION)) < Hob.HandoffInformationTable->EfiFreeMemoryBottom) {\r
+ return 0;\r
+ } else {\r
+ //\r
+ // Update the PHIT to reflect the memory usage\r
+ //\r
+ Hob.HandoffInformationTable->EfiFreeMemoryTop -= Pages * EFI_PAGE_SIZE;\r
+\r
+ // This routine used to create a memory allocation HOB a la PEI, but that's not\r
+ // necessary for us.\r
+\r
+ //\r
+ // Create a memory allocation HOB.\r
+ //\r
+ BuildMemoryAllocationHob (\r
+ Hob.HandoffInformationTable->EfiFreeMemoryTop,\r
+ Pages * EFI_PAGE_SIZE,\r
+ EfiBootServicesData\r
+ );\r
+ return (VOID *)(UINTN)Hob.HandoffInformationTable->EfiFreeMemoryTop;\r
+ }\r
+}\r
+\r
+\r
+/**\r
+ Allocates one or more 4KB pages of type EfiBootServicesData at a specified alignment.\r
+\r
+ Allocates the number of 4KB pages specified by Pages of type EfiBootServicesData with an\r
+ alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is\r
+ returned. If there is not enough memory at the specified alignment remaining to satisfy the\r
+ request, then NULL is returned.\r
+ If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r
+\r
+ @param Pages The number of 4 KB pages to allocate.\r
+ @param Alignment The requested alignment of the allocation. Must be a power of two.\r
+ If Alignment is zero, then byte alignment is used.\r
+\r
+ @return A pointer to the allocated buffer or NULL if allocation fails.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+AllocateAlignedPages (\r
+ IN UINTN Pages,\r
+ IN UINTN Alignment\r
+ )\r
+{\r
+ VOID *Memory;\r
+ UINTN AlignmentMask;\r
+\r
+ //\r
+ // Alignment must be a power of two or zero.\r
+ //\r
+ ASSERT ((Alignment & (Alignment - 1)) == 0);\r
+\r
+ if (Pages == 0) {\r
+ return NULL;\r
+ }\r
+ //\r
+ // Make sure that Pages plus EFI_SIZE_TO_PAGES (Alignment) does not overflow.\r
+ //\r
+ ASSERT (Pages <= (MAX_ADDRESS - EFI_SIZE_TO_PAGES (Alignment)));\r
+ //\r
+ // We would rather waste some memory to save PEI code size.\r
+ //\r
+ Memory = (VOID *)(UINTN)AllocatePages (Pages + EFI_SIZE_TO_PAGES (Alignment));\r
+ if (Alignment == 0) {\r
+ AlignmentMask = Alignment;\r
+ } else {\r
+ AlignmentMask = Alignment - 1;\r
+ }\r
+ return (VOID *) (UINTN) (((UINTN) Memory + AlignmentMask) & ~AlignmentMask);\r
+}\r
+\r
+\r
+\r
+\r
+/**\r
+ Allocates a buffer of type EfiBootServicesData.\r
+\r
+ Allocates the number bytes specified by AllocationSize of type EfiBootServicesData and returns a\r
+ pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r
+ returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r
+\r
+ @param AllocationSize The number of bytes to allocate.\r
+\r
+ @return A pointer to the allocated buffer or NULL if allocation fails.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+AllocatePool (\r
+ IN UINTN AllocationSize\r
+ )\r
+{\r
+ EFI_HOB_MEMORY_POOL *Hob;\r
+\r
+ Hob = GetHobList ();\r
+\r
+ \r
+ //\r
+ // Verify that there is sufficient memory to satisfy the allocation\r
+ //\r
+ if (AllocationSize > 0x10000) {\r
+ // Please call AllcoatePages for big allocations\r
+ return 0;\r
+ } else {\r
+\r
+ Hob = (EFI_HOB_MEMORY_POOL *)CreateHob (EFI_HOB_TYPE_MEMORY_POOL, (UINT16)(sizeof (EFI_HOB_TYPE_MEMORY_POOL) + AllocationSize));\r
+ return (VOID *)(Hob + 1);\r
+ }\r
+}\r
+\r
+/**\r
+ Frees a buffer that was previously allocated with one of the pool allocation functions in the\r
+ Memory Allocation Library.\r
+\r
+ Frees the buffer specified by Buffer. Buffer must have been allocated on a previous call to the\r
+ pool allocation services of the Memory Allocation Library. If it is not possible to free pool\r
+ resources, then this function will perform no actions.\r
+\r
+ If Buffer was not allocated with a pool allocation function in the Memory Allocation Library,\r
+ then ASSERT().\r
+\r
+ @param Buffer Pointer to the buffer to free.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+FreePool (\r
+ IN VOID *Buffer\r
+ )\r
+{\r
+ // Not implemented yet\r
+}\r
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