1 files changed, 182 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Core/Dxe/Mem/Imem.h b/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Core/Dxe/Mem/Imem.h
new file mode 100644
index 00000000..357cbfc8
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Core/Dxe/Mem/Imem.h
@@ -0,0 +1,182 @@
+/** @file
+  Data structure and functions to allocate and free memory space.
+
+Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef _IMEM_H_
+#define _IMEM_H_
+
+//
+// +---------------------------------------------------+
+// | 0..(EfiMaxMemoryType - 1)    - Normal memory type |
+// +---------------------------------------------------+
+// | EfiMaxMemoryType..0x6FFFFFFF - Invalid            |
+// +---------------------------------------------------+
+// | 0x70000000..0x7FFFFFFF       - OEM reserved       |
+// +---------------------------------------------------+
+// | 0x80000000..0xFFFFFFFF       - OS reserved        |
+// +---------------------------------------------------+
+//
+#define MEMORY_TYPE_OS_RESERVED_MIN                 0x80000000
+#define MEMORY_TYPE_OS_RESERVED_MAX                 0xFFFFFFFF
+#define MEMORY_TYPE_OEM_RESERVED_MIN                0x70000000
+#define MEMORY_TYPE_OEM_RESERVED_MAX                0x7FFFFFFF
+
+//
+// MEMORY_MAP_ENTRY
+//
+
+#define MEMORY_MAP_SIGNATURE   SIGNATURE_32('m','m','a','p')
+typedef struct {
+  UINTN           Signature;
+  LIST_ENTRY      Link;
+  BOOLEAN         FromPages;
+
+  EFI_MEMORY_TYPE Type;
+  UINT64          Start;
+  UINT64          End;
+
+  UINT64          VirtualStart;
+  UINT64          Attribute;
+} MEMORY_MAP;
+
+//
+// Internal prototypes
+//
+
+
+/**
+  Internal function.  Used by the pool functions to allocate pages
+  to back pool allocation requests.
+
+  @param  PoolType               The type of memory for the new pool pages
+  @param  NumberOfPages          No of pages to allocate
+  @param  Alignment              Bits to align.
+  @param  NeedGuard              Flag to indicate Guard page is needed or not
+
+  @return The allocated memory, or NULL
+
+**/
+VOID *
+CoreAllocatePoolPages (
+  IN EFI_MEMORY_TYPE    PoolType,
+  IN UINTN              NumberOfPages,
+  IN UINTN              Alignment,
+  IN BOOLEAN            NeedGuard
+  );
+
+
+
+/**
+  Internal function.  Frees pool pages allocated via AllocatePoolPages ()
+
+  @param  Memory                 The base address to free
+  @param  NumberOfPages          The number of pages to free
+
+**/
+VOID
+CoreFreePoolPages (
+  IN EFI_PHYSICAL_ADDRESS   Memory,
+  IN UINTN                  NumberOfPages
+  );
+
+
+
+/**
+  Internal function to allocate pool of a particular type.
+  Caller must have the memory lock held
+
+  @param  PoolType               Type of pool to allocate
+  @param  Size                   The amount of pool to allocate
+  @param  NeedGuard              Flag to indicate Guard page is needed or not
+
+  @return The allocate pool, or NULL
+
+**/
+VOID *
+CoreAllocatePoolI (
+  IN EFI_MEMORY_TYPE  PoolType,
+  IN UINTN            Size,
+  IN BOOLEAN          NeedGuard
+  );
+
+
+
+/**
+  Internal function to free a pool entry.
+  Caller must have the memory lock held
+
+  @param  Buffer                 The allocated pool entry to free
+  @param  PoolType               Pointer to pool type
+
+  @retval EFI_INVALID_PARAMETER  Buffer not valid
+  @retval EFI_SUCCESS            Buffer successfully freed.
+
+**/
+EFI_STATUS
+CoreFreePoolI (
+  IN VOID               *Buffer,
+  OUT EFI_MEMORY_TYPE   *PoolType OPTIONAL
+  );
+
+
+
+/**
+  Enter critical section by gaining lock on gMemoryLock.
+
+**/
+VOID
+CoreAcquireMemoryLock (
+  VOID
+  );
+
+
+/**
+  Exit critical section by releasing lock on gMemoryLock.
+
+**/
+VOID
+CoreReleaseMemoryLock (
+  VOID
+  );
+
+/**
+  Allocates pages from the memory map.
+
+  @param  Type                   The type of allocation to perform
+  @param  MemoryType             The type of memory to turn the allocated pages
+                                 into
+  @param  NumberOfPages          The number of pages to allocate
+  @param  Memory                 A pointer to receive the base allocated memory
+                                 address
+  @param  NeedGuard              Flag to indicate Guard page is needed or not
+
+  @return Status. On success, Memory is filled in with the base address allocated
+  @retval EFI_INVALID_PARAMETER  Parameters violate checking rules defined in
+                                 spec.
+  @retval EFI_NOT_FOUND          Could not allocate pages match the requirement.
+  @retval EFI_OUT_OF_RESOURCES   No enough pages to allocate.
+  @retval EFI_SUCCESS            Pages successfully allocated.
+
+**/
+EFI_STATUS
+EFIAPI
+CoreInternalAllocatePages (
+  IN EFI_ALLOCATE_TYPE      Type,
+  IN EFI_MEMORY_TYPE        MemoryType,
+  IN UINTN                  NumberOfPages,
+  IN OUT EFI_PHYSICAL_ADDRESS  *Memory,
+  IN BOOLEAN                NeedGuard
+  );
+
+//
+// Internal Global data
+//
+
+extern EFI_LOCK           gMemoryLock;
+extern LIST_ENTRY         gMemoryMap;
+extern LIST_ENTRY         mGcdMemorySpaceMap;
+#endif