--- /dev/null
+/** @file\r
+ Support routines for memory allocation routines based on Standalone MM Core internal functions.\r
+\r
+ Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>\r
+ Copyright (c) 2016 - 2018, ARM Limited. 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 <PiMm.h>\r
+\r
+#include <Guid/MmramMemoryReserve.h>\r
+#include <Library/MemoryAllocationLib.h>\r
+#include <Library/BaseMemoryLib.h>\r
+#include <Library/DebugLib.h>\r
+#include <Library/HobLib.h>\r
+#include "StandaloneMmCoreMemoryAllocationServices.h"\r
+\r
+EFI_MM_SYSTEM_TABLE *gMmst = NULL;\r
+\r
+/**\r
+ Allocates one or more 4KB pages of a certain memory type.\r
+\r
+ Allocates the number of 4KB pages of a certain memory type and returns a pointer to the allocated\r
+ buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL is returned.\r
+ If there is not enough memory remaining to satisfy the request, then NULL is returned.\r
+\r
+ @param MemoryType The type of memory to allocate.\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
+InternalAllocatePages (\r
+ IN EFI_MEMORY_TYPE MemoryType,\r
+ IN UINTN Pages\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_PHYSICAL_ADDRESS Memory;\r
+\r
+ if (Pages == 0) {\r
+ return NULL;\r
+ }\r
+\r
+ Status = gMmst->MmAllocatePages (AllocateAnyPages, MemoryType, Pages, &Memory);\r
+ if (EFI_ERROR (Status)) {\r
+ return NULL;\r
+ }\r
+ return (VOID *) (UINTN) Memory;\r
+}\r
+\r
+/**\r
+ Allocates one or more 4KB pages of type EfiBootServicesData.\r
+\r
+ Allocates the number of 4KB pages of type EfiBootServicesData 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
+ return InternalAllocatePages (EfiRuntimeServicesData, Pages);\r
+}\r
+\r
+/**\r
+ Allocates one or more 4KB pages of type EfiRuntimeServicesData.\r
+\r
+ Allocates the number of 4KB pages of type EfiRuntimeServicesData 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
+AllocateRuntimePages (\r
+ IN UINTN Pages\r
+ )\r
+{\r
+ return InternalAllocatePages (EfiRuntimeServicesData, Pages);\r
+}\r
+\r
+/**\r
+ Allocates one or more 4KB pages of type EfiReservedMemoryType.\r
+\r
+ Allocates the number of 4KB pages of type EfiReservedMemoryType 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
+AllocateReservedPages (\r
+ IN UINTN Pages\r
+ )\r
+{\r
+ return NULL;\r
+}\r
+\r
+/**\r
+ Frees one or more 4KB pages that were previously allocated with one of the page allocation\r
+ functions in the Memory Allocation Library.\r
+\r
+ Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer. Buffer\r
+ must have been allocated on a previous call to the page allocation services of the Memory\r
+ Allocation Library. If it is not possible to free allocated pages, then this function will\r
+ perform no actions.\r
+\r
+ If Buffer was not allocated with a page allocation function in the Memory Allocation Library,\r
+ then ASSERT().\r
+ If Pages is zero, then ASSERT().\r
+\r
+ @param Buffer Pointer to the buffer of pages to free.\r
+ @param Pages The number of 4 KB pages to free.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+FreePages (\r
+ IN VOID *Buffer,\r
+ IN UINTN Pages\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+\r
+ ASSERT (Pages != 0);\r
+ Status = gMmst->MmFreePages ((EFI_PHYSICAL_ADDRESS) (UINTN) Buffer, Pages);\r
+ ASSERT_EFI_ERROR (Status);\r
+}\r
+\r
+/**\r
+ Allocates one or more 4KB pages of a certain memory type at a specified alignment.\r
+\r
+ Allocates the number of 4KB pages specified by Pages of a certain memory type with an alignment\r
+ specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is returned.\r
+ If there is not enough memory at the specified alignment remaining to satisfy the request, then\r
+ NULL is returned.\r
+ If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r
+ If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().\r
+\r
+ @param MemoryType The type of memory to allocate.\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
+InternalAllocateAlignedPages (\r
+ IN EFI_MEMORY_TYPE MemoryType,\r
+ IN UINTN Pages,\r
+ IN UINTN Alignment\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_PHYSICAL_ADDRESS Memory;\r
+ UINTN AlignedMemory;\r
+ UINTN AlignmentMask;\r
+ UINTN UnalignedPages;\r
+ UINTN RealPages;\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
+ if (Alignment > EFI_PAGE_SIZE) {\r
+ //\r
+ // Calculate the total number of pages since alignment is larger than page size.\r
+ //\r
+ AlignmentMask = Alignment - 1;\r
+ RealPages = Pages + EFI_SIZE_TO_PAGES (Alignment);\r
+ //\r
+ // Make sure that Pages plus EFI_SIZE_TO_PAGES (Alignment) does not overflow.\r
+ //\r
+ ASSERT (RealPages > Pages);\r
+\r
+ Status = gMmst->MmAllocatePages (AllocateAnyPages, MemoryType, RealPages, &Memory);\r
+ if (EFI_ERROR (Status)) {\r
+ return NULL;\r
+ }\r
+ AlignedMemory = ((UINTN) Memory + AlignmentMask) & ~AlignmentMask;\r
+ UnalignedPages = EFI_SIZE_TO_PAGES (AlignedMemory - (UINTN) Memory);\r
+ if (UnalignedPages > 0) {\r
+ //\r
+ // Free first unaligned page(s).\r
+ //\r
+ Status = gMmst->MmFreePages (Memory, UnalignedPages);\r
+ ASSERT_EFI_ERROR (Status);\r
+ }\r
+ Memory = (EFI_PHYSICAL_ADDRESS) (AlignedMemory + EFI_PAGES_TO_SIZE (Pages));\r
+ UnalignedPages = RealPages - Pages - UnalignedPages;\r
+ if (UnalignedPages > 0) {\r
+ //\r
+ // Free last unaligned page(s).\r
+ //\r
+ Status = gMmst->MmFreePages (Memory, UnalignedPages);\r
+ ASSERT_EFI_ERROR (Status);\r
+ }\r
+ } else {\r
+ //\r
+ // Do not over-allocate pages in this case.\r
+ //\r
+ Status = gMmst->MmAllocatePages (AllocateAnyPages, MemoryType, Pages, &Memory);\r
+ if (EFI_ERROR (Status)) {\r
+ return NULL;\r
+ }\r
+ AlignedMemory = (UINTN) Memory;\r
+ }\r
+ return (VOID *) AlignedMemory;\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
+\r
+ If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r
+ If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, 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
+ return InternalAllocateAlignedPages (EfiRuntimeServicesData, Pages, Alignment);\r
+}\r
+\r
+/**\r
+ Allocates one or more 4KB pages of type EfiRuntimeServicesData at a specified alignment.\r
+\r
+ Allocates the number of 4KB pages specified by Pages of type EfiRuntimeServicesData 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
+\r
+ If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r
+ If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, 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
+AllocateAlignedRuntimePages (\r
+ IN UINTN Pages,\r
+ IN UINTN Alignment\r
+ )\r
+{\r
+ return InternalAllocateAlignedPages (EfiRuntimeServicesData, Pages, Alignment);\r
+}\r
+\r
+/**\r
+ Allocates one or more 4KB pages of type EfiReservedMemoryType at a specified alignment.\r
+\r
+ Allocates the number of 4KB pages specified by Pages of type EfiReservedMemoryType 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
+\r
+ If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r
+ If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, 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
+AllocateAlignedReservedPages (\r
+ IN UINTN Pages,\r
+ IN UINTN Alignment\r
+ )\r
+{\r
+ return NULL;\r
+}\r
+\r
+/**\r
+ Frees one or more 4KB pages that were previously allocated with one of the aligned page\r
+ allocation functions in the Memory Allocation Library.\r
+\r
+ Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer. Buffer\r
+ must have been allocated on a previous call to the aligned page allocation services of the Memory\r
+ Allocation Library. If it is not possible to free allocated pages, then this function will\r
+ perform no actions.\r
+\r
+ If Buffer was not allocated with an aligned page allocation function in the Memory Allocation\r
+ Library, then ASSERT().\r
+ If Pages is zero, then ASSERT().\r
+\r
+ @param Buffer Pointer to the buffer of pages to free.\r
+ @param Pages The number of 4 KB pages to free.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+FreeAlignedPages (\r
+ IN VOID *Buffer,\r
+ IN UINTN Pages\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+\r
+ ASSERT (Pages != 0);\r
+ Status = gMmst->MmFreePages ((EFI_PHYSICAL_ADDRESS) (UINTN) Buffer, Pages);\r
+ ASSERT_EFI_ERROR (Status);\r
+}\r
+\r
+/**\r
+ Allocates a buffer of a certain pool type.\r
+\r
+ Allocates the number bytes specified by AllocationSize of a certain pool type 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 MemoryType The type of memory to allocate.\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
+InternalAllocatePool (\r
+ IN EFI_MEMORY_TYPE MemoryType,\r
+ IN UINTN AllocationSize\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ VOID *Memory;\r
+\r
+ Memory = NULL;\r
+\r
+ Status = gMmst->MmAllocatePool (MemoryType, AllocationSize, &Memory);\r
+ if (EFI_ERROR (Status)) {\r
+ Memory = NULL;\r
+ }\r
+ return Memory;\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
+ return InternalAllocatePool (EfiRuntimeServicesData, AllocationSize);\r
+}\r
+\r
+/**\r
+ Allocates a buffer of type EfiRuntimeServicesData.\r
+\r
+ Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData and returns\r
+ a 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
+AllocateRuntimePool (\r
+ IN UINTN AllocationSize\r
+ )\r
+{\r
+ return InternalAllocatePool (EfiRuntimeServicesData, AllocationSize);\r
+}\r
+\r
+/**\r
+ Allocates a buffer of type EfiReservedMemoryType.\r
+\r
+ Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType and returns\r
+ a 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
+AllocateReservedPool (\r
+ IN UINTN AllocationSize\r
+ )\r
+{\r
+ return NULL;\r
+}\r
+\r
+/**\r
+ Allocates and zeros a buffer of a certain pool type.\r
+\r
+ Allocates the number bytes specified by AllocationSize of a certain pool type, clears the buffer\r
+ with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a valid\r
+ buffer of 0 size is returned. If there is not enough memory remaining to satisfy the request,\r
+ then NULL is returned.\r
+\r
+ @param PoolType The type of memory to allocate.\r
+ @param AllocationSize The number of bytes to allocate and zero.\r
+\r
+ @return A pointer to the allocated buffer or NULL if allocation fails.\r
+\r
+**/\r
+VOID *\r
+InternalAllocateZeroPool (\r
+ IN EFI_MEMORY_TYPE PoolType,\r
+ IN UINTN AllocationSize\r
+ )\r
+{\r
+ VOID *Memory;\r
+\r
+ Memory = InternalAllocatePool (PoolType, AllocationSize);\r
+ if (Memory != NULL) {\r
+ Memory = ZeroMem (Memory, AllocationSize);\r
+ }\r
+ return Memory;\r
+}\r
+\r
+/**\r
+ Allocates and zeros a buffer of type EfiBootServicesData.\r
+\r
+ Allocates the number bytes specified by AllocationSize of type EfiBootServicesData, clears the\r
+ buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a\r
+ valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the\r
+ request, then NULL is returned.\r
+\r
+ @param AllocationSize The number of bytes to allocate and zero.\r
+\r
+ @return A pointer to the allocated buffer or NULL if allocation fails.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+AllocateZeroPool (\r
+ IN UINTN AllocationSize\r
+ )\r
+{\r
+ return InternalAllocateZeroPool (EfiRuntimeServicesData, AllocationSize);\r
+}\r
+\r
+/**\r
+ Allocates and zeros a buffer of type EfiRuntimeServicesData.\r
+\r
+ Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, clears the\r
+ buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a\r
+ valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the\r
+ request, then NULL is returned.\r
+\r
+ @param AllocationSize The number of bytes to allocate and zero.\r
+\r
+ @return A pointer to the allocated buffer or NULL if allocation fails.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+AllocateRuntimeZeroPool (\r
+ IN UINTN AllocationSize\r
+ )\r
+{\r
+ return InternalAllocateZeroPool (EfiRuntimeServicesData, AllocationSize);\r
+}\r
+\r
+/**\r
+ Allocates and zeros a buffer of type EfiReservedMemoryType.\r
+\r
+ Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType, clears the\r
+ buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a\r
+ valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the\r
+ request, then NULL is returned.\r
+\r
+ @param AllocationSize The number of bytes to allocate and zero.\r
+\r
+ @return A pointer to the allocated buffer or NULL if allocation fails.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+AllocateReservedZeroPool (\r
+ IN UINTN AllocationSize\r
+ )\r
+{\r
+ return NULL;\r
+}\r
+\r
+/**\r
+ Copies a buffer to an allocated buffer of a certain pool type.\r
+\r
+ Allocates the number bytes specified by AllocationSize of a certain pool type, copies\r
+ AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r
+ allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r
+ is not enough memory remaining to satisfy the request, then NULL is returned.\r
+ If Buffer is NULL, then ASSERT().\r
+ If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r
+\r
+ @param PoolType The type of pool to allocate.\r
+ @param AllocationSize The number of bytes to allocate and zero.\r
+ @param Buffer The buffer to copy to the allocated buffer.\r
+\r
+ @return A pointer to the allocated buffer or NULL if allocation fails.\r
+\r
+**/\r
+VOID *\r
+InternalAllocateCopyPool (\r
+ IN EFI_MEMORY_TYPE PoolType,\r
+ IN UINTN AllocationSize,\r
+ IN CONST VOID *Buffer\r
+ )\r
+{\r
+ VOID *Memory;\r
+\r
+ ASSERT (Buffer != NULL);\r
+ ASSERT (AllocationSize <= (MAX_ADDRESS - (UINTN) Buffer + 1));\r
+\r
+ Memory = InternalAllocatePool (PoolType, AllocationSize);\r
+ if (Memory != NULL) {\r
+ Memory = CopyMem (Memory, Buffer, AllocationSize);\r
+ }\r
+ return Memory;\r
+}\r
+\r
+/**\r
+ Copies a buffer to an allocated buffer of type EfiBootServicesData.\r
+\r
+ Allocates the number bytes specified by AllocationSize of type EfiBootServicesData, copies\r
+ AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r
+ allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r
+ is not enough memory remaining to satisfy the request, then NULL is returned.\r
+\r
+ If Buffer is NULL, then ASSERT().\r
+ If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r
+\r
+ @param AllocationSize The number of bytes to allocate and zero.\r
+ @param Buffer The buffer to copy to the allocated buffer.\r
+\r
+ @return A pointer to the allocated buffer or NULL if allocation fails.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+AllocateCopyPool (\r
+ IN UINTN AllocationSize,\r
+ IN CONST VOID *Buffer\r
+ )\r
+{\r
+ return InternalAllocateCopyPool (EfiRuntimeServicesData, AllocationSize, Buffer);\r
+}\r
+\r
+/**\r
+ Copies a buffer to an allocated buffer of type EfiRuntimeServicesData.\r
+\r
+ Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, copies\r
+ AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r
+ allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r
+ is not enough memory remaining to satisfy the request, then NULL is returned.\r
+\r
+ If Buffer is NULL, then ASSERT().\r
+ If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r
+\r
+ @param AllocationSize The number of bytes to allocate and zero.\r
+ @param Buffer The buffer to copy to the allocated buffer.\r
+\r
+ @return A pointer to the allocated buffer or NULL if allocation fails.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+AllocateRuntimeCopyPool (\r
+ IN UINTN AllocationSize,\r
+ IN CONST VOID *Buffer\r
+ )\r
+{\r
+ return InternalAllocateCopyPool (EfiRuntimeServicesData, AllocationSize, Buffer);\r
+}\r
+\r
+/**\r
+ Copies a buffer to an allocated buffer of type EfiReservedMemoryType.\r
+\r
+ Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType, copies\r
+ AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r
+ allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r
+ is not enough memory remaining to satisfy the request, then NULL is returned.\r
+\r
+ If Buffer is NULL, then ASSERT().\r
+ If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r
+\r
+ @param AllocationSize The number of bytes to allocate and zero.\r
+ @param Buffer The buffer to copy to the allocated buffer.\r
+\r
+ @return A pointer to the allocated buffer or NULL if allocation fails.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+AllocateReservedCopyPool (\r
+ IN UINTN AllocationSize,\r
+ IN CONST VOID *Buffer\r
+ )\r
+{\r
+ return NULL;\r
+}\r
+\r
+/**\r
+ Reallocates a buffer of a specified memory type.\r
+\r
+ Allocates and zeros the number bytes specified by NewSize from memory of the type\r
+ specified by PoolType. If OldBuffer is not NULL, then the smaller of OldSize and\r
+ NewSize bytes are copied from OldBuffer to the newly allocated buffer, and\r
+ OldBuffer is freed. A pointer to the newly allocated buffer is returned.\r
+ If NewSize is 0, then a valid buffer of 0 size is returned. If there is not\r
+ enough memory remaining to satisfy the request, then NULL is returned.\r
+\r
+ If the allocation of the new buffer is successful and the smaller of NewSize and OldSize\r
+ is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().\r
+\r
+ @param PoolType The type of pool to allocate.\r
+ @param OldSize The size, in bytes, of OldBuffer.\r
+ @param NewSize The size, in bytes, of the buffer to reallocate.\r
+ @param OldBuffer The buffer to copy to the allocated buffer. This is an optional\r
+ parameter that may be NULL.\r
+\r
+ @return A pointer to the allocated buffer or NULL if allocation fails.\r
+\r
+**/\r
+VOID *\r
+InternalReallocatePool (\r
+ IN EFI_MEMORY_TYPE PoolType,\r
+ IN UINTN OldSize,\r
+ IN UINTN NewSize,\r
+ IN VOID *OldBuffer OPTIONAL\r
+ )\r
+{\r
+ VOID *NewBuffer;\r
+\r
+ NewBuffer = InternalAllocateZeroPool (PoolType, NewSize);\r
+ if (NewBuffer != NULL && OldBuffer != NULL) {\r
+ CopyMem (NewBuffer, OldBuffer, MIN (OldSize, NewSize));\r
+ FreePool (OldBuffer);\r
+ }\r
+ return NewBuffer;\r
+}\r
+\r
+/**\r
+ Reallocates a buffer of type EfiBootServicesData.\r
+\r
+ Allocates and zeros the number bytes specified by NewSize from memory of type\r
+ EfiBootServicesData. If OldBuffer is not NULL, then the smaller of OldSize and\r
+ NewSize bytes are copied from OldBuffer to the newly allocated buffer, and\r
+ OldBuffer is freed. A pointer to the newly allocated buffer is returned.\r
+ If NewSize is 0, then a valid buffer of 0 size is returned. If there is not\r
+ enough memory remaining to satisfy the request, then NULL is returned.\r
+\r
+ If the allocation of the new buffer is successful and the smaller of NewSize and OldSize\r
+ is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().\r
+\r
+ @param OldSize The size, in bytes, of OldBuffer.\r
+ @param NewSize The size, in bytes, of the buffer to reallocate.\r
+ @param OldBuffer The buffer to copy to the allocated buffer. This is an optional\r
+ parameter that may be NULL.\r
+\r
+ @return A pointer to the allocated buffer or NULL if allocation fails.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+ReallocatePool (\r
+ IN UINTN OldSize,\r
+ IN UINTN NewSize,\r
+ IN VOID *OldBuffer OPTIONAL\r
+ )\r
+{\r
+ return InternalReallocatePool (EfiRuntimeServicesData, OldSize, NewSize, OldBuffer);\r
+}\r
+\r
+/**\r
+ Reallocates a buffer of type EfiRuntimeServicesData.\r
+\r
+ Allocates and zeros the number bytes specified by NewSize from memory of type\r
+ EfiRuntimeServicesData. If OldBuffer is not NULL, then the smaller of OldSize and\r
+ NewSize bytes are copied from OldBuffer to the newly allocated buffer, and\r
+ OldBuffer is freed. A pointer to the newly allocated buffer is returned.\r
+ If NewSize is 0, then a valid buffer of 0 size is returned. If there is not\r
+ enough memory remaining to satisfy the request, then NULL is returned.\r
+\r
+ If the allocation of the new buffer is successful and the smaller of NewSize and OldSize\r
+ is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().\r
+\r
+ @param OldSize The size, in bytes, of OldBuffer.\r
+ @param NewSize The size, in bytes, of the buffer to reallocate.\r
+ @param OldBuffer The buffer to copy to the allocated buffer. This is an optional\r
+ parameter that may be NULL.\r
+\r
+ @return A pointer to the allocated buffer or NULL if allocation fails.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+ReallocateRuntimePool (\r
+ IN UINTN OldSize,\r
+ IN UINTN NewSize,\r
+ IN VOID *OldBuffer OPTIONAL\r
+ )\r
+{\r
+ return InternalReallocatePool (EfiRuntimeServicesData, OldSize, NewSize, OldBuffer);\r
+}\r
+\r
+/**\r
+ Reallocates a buffer of type EfiReservedMemoryType.\r
+\r
+ Allocates and zeros the number bytes specified by NewSize from memory of type\r
+ EfiReservedMemoryType. If OldBuffer is not NULL, then the smaller of OldSize and\r
+ NewSize bytes are copied from OldBuffer to the newly allocated buffer, and\r
+ OldBuffer is freed. A pointer to the newly allocated buffer is returned.\r
+ If NewSize is 0, then a valid buffer of 0 size is returned. If there is not\r
+ enough memory remaining to satisfy the request, then NULL is returned.\r
+\r
+ If the allocation of the new buffer is successful and the smaller of NewSize and OldSize\r
+ is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().\r
+\r
+ @param OldSize The size, in bytes, of OldBuffer.\r
+ @param NewSize The size, in bytes, of the buffer to reallocate.\r
+ @param OldBuffer The buffer to copy to the allocated buffer. This is an optional\r
+ parameter that may be NULL.\r
+\r
+ @return A pointer to the allocated buffer or NULL if allocation fails.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+ReallocateReservedPool (\r
+ IN UINTN OldSize,\r
+ IN UINTN NewSize,\r
+ IN VOID *OldBuffer OPTIONAL\r
+ )\r
+{\r
+ return NULL;\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
+ EFI_STATUS Status;\r
+\r
+ Status = gMmst->MmFreePool (Buffer);\r
+ ASSERT_EFI_ERROR (Status);\r
+}\r
+\r
+/**\r
+ The constructor function calls MmInitializeMemoryServices to initialize\r
+ memory in MMRAM and caches EFI_MM_SYSTEM_TABLE pointer.\r
+\r
+ @param ImageHandle The firmware allocated handle for the EFI image.\r
+ @param SystemTable A pointer to the Management mode System Table.\r
+\r
+ @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+MemoryAllocationLibConstructor (\r
+ IN EFI_HANDLE ImageHandle,\r
+ IN EFI_MM_SYSTEM_TABLE *MmSystemTable\r
+ )\r
+{\r
+ MM_CORE_PRIVATE_DATA *MmCorePrivate;\r
+ EFI_HOB_GUID_TYPE *GuidHob;\r
+ MM_CORE_DATA_HOB_DATA *DataInHob;\r
+ VOID *HobStart;\r
+ EFI_MMRAM_HOB_DESCRIPTOR_BLOCK *MmramRangesHobData;\r
+ EFI_MMRAM_DESCRIPTOR *MmramRanges;\r
+ UINT32 MmramRangeCount;\r
+ EFI_HOB_GUID_TYPE *MmramRangesHob;\r
+\r
+ HobStart = GetHobList ();\r
+ DEBUG ((DEBUG_INFO, "StandaloneMmCoreMemoryAllocationLibConstructor - 0x%x\n", HobStart));\r
+\r
+ //\r
+ // Extract MM Core Private context from the Hob. If absent search for\r
+ // a Hob containing the MMRAM ranges\r
+ //\r
+ GuidHob = GetNextGuidHob (&gMmCoreDataHobGuid, HobStart);\r
+ if (GuidHob == NULL) {\r
+ MmramRangesHob = GetNextGuidHob (&gEfiMmPeiMmramMemoryReserveGuid, HobStart);\r
+ if (MmramRangesHob == NULL) {\r
+ return EFI_UNSUPPORTED;\r
+ }\r
+\r
+ MmramRangesHobData = GET_GUID_HOB_DATA (MmramRangesHob);\r
+ if (MmramRangesHobData == NULL) {\r
+ return EFI_UNSUPPORTED;\r
+ }\r
+\r
+ MmramRanges = MmramRangesHobData->Descriptor;\r
+ if (MmramRanges == NULL) {\r
+ return EFI_UNSUPPORTED;\r
+ }\r
+\r
+ MmramRangeCount = MmramRangesHobData->NumberOfMmReservedRegions;\r
+ if (MmramRanges == NULL) {\r
+ return EFI_UNSUPPORTED;\r
+ }\r
+\r
+ } else {\r
+ DataInHob = GET_GUID_HOB_DATA (GuidHob);\r
+ MmCorePrivate = (MM_CORE_PRIVATE_DATA *)(UINTN)DataInHob->Address;\r
+ MmramRanges = (EFI_MMRAM_DESCRIPTOR *)(UINTN)MmCorePrivate->MmramRanges;\r
+ MmramRangeCount = MmCorePrivate->MmramRangeCount;\r
+ }\r
+\r
+ {\r
+ UINTN Index;\r
+\r
+ DEBUG ((DEBUG_INFO, "MmramRangeCount - 0x%x\n", MmramRangeCount));\r
+ for (Index = 0; Index < MmramRangeCount; Index++) {\r
+ DEBUG ((DEBUG_INFO, "MmramRanges[%d]: 0x%016lx - 0x%016lx\n",\r
+ Index, MmramRanges[Index].CpuStart, MmramRanges[Index].PhysicalSize));\r
+ }\r
+ }\r
+\r
+ //\r
+ // Initialize memory service using free MMRAM\r
+ //\r
+ DEBUG ((DEBUG_INFO, "MmInitializeMemoryServices\n"));\r
+ MmInitializeMemoryServices ((UINTN)MmramRangeCount, (VOID *)(UINTN)MmramRanges);\r
+\r
+ // Initialize MM Services Table\r
+ gMmst = MmSystemTable;\r
+ return EFI_SUCCESS;\r
+}\r
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