audk/MdePkg/Include/Protocol/Runtime.h

/** @file
  Runtime Architectural Protocol as defined in PI Specification VOLUME 2 DXE

  Allows the runtime functionality of the DXE Foundation to be contained 
  in a separate driver. It also provides hooks for the DXE Foundation to 
  export information that is needed at runtime. As such, this protocol allows 
  services to the DXE Foundation to manage runtime drivers and events. 
  This protocol also implies that the runtime services required to transition 
  to virtual mode, SetVirtualAddressMap() and ConvertPointer(), have been 
  registered into the UEFI Runtime Table in the UEFI System Table. This protocol 
  must be produced by a runtime DXE driver and may only be consumed by the DXE Foundation.

  Copyright (c) 2006 - 2008, Intel Corporation                                                         
  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.             

**/

#ifndef __ARCH_PROTOCOL_RUNTIME_H__
#define __ARCH_PROTOCOL_RUNTIME_H__

///
/// Global ID for the Runtime Architectural Protocol
///
#define EFI_RUNTIME_ARCH_PROTOCOL_GUID \
  { 0xb7dfb4e1, 0x52f, 0x449f, {0x87, 0xbe, 0x98, 0x18, 0xfc, 0x91, 0xb7, 0x33 } }

typedef struct _EFI_RUNTIME_ARCH_PROTOCOL  EFI_RUNTIME_ARCH_PROTOCOL;

///
/// LIST_ENTRY from BaseType 
///
typedef LIST_ENTRY EFI_LIST_ENTRY;

typedef struct _EFI_RUNTIME_IMAGE_ENTRY  EFI_RUNTIME_IMAGE_ENTRY;

///
/// EFI_RUNTIME_IMAGE_ENTRY
///
struct _EFI_RUNTIME_IMAGE_ENTRY {
  ///
  /// Start of image that has been loaded in memory. It is a pointer 
  /// to either the DOS header or PE header of the image.
  ///
  VOID                    *ImageBase;
  ///
  /// Size in bytes of the image represented by ImageBase.
  ///
  UINT64                  ImageSize;
  ///
  /// Information about the fix-ups that were performed on ImageBase when it was
  /// loaded into memory.
  ///
  VOID                    *RelocationData;
  ///
  /// The ImageHandle passed into ImageBase when it was loaded.
  ///
  EFI_HANDLE              Handle;
  ///
  /// Entry for this node in the EFI_RUNTIME_ARCHITECTURE_PROTOCOL.ImageHead list.
  ///
  EFI_LIST_ENTRY          Link;
};

typedef struct _EFI_RUNTIME_EVENT_ENTRY  EFI_RUNTIME_EVENT_ENTRY;

///
/// EFI_RUNTIME_EVENT_ENTRY
///
struct _EFI_RUNTIME_EVENT_ENTRY {
  ///
  /// The same as Type passed into CreateEvent().
  ///
  UINT32                  Type;
  ///
  /// The same as NotifyTpl passed into CreateEvent().
  ///
  EFI_TPL                 NotifyTpl;
  ///
  /// The same as NotifyFunction passed into CreateEvent().
  ///
  EFI_EVENT_NOTIFY        NotifyFunction;
  ///
  /// The same as NotifyContext passed into CreateEvent().
  ///
  VOID                    *NotifyContext;
  ///
  /// The EFI_EVENT returned by CreateEvent(). Event must be in runtime memory.
  ///
  EFI_EVENT               *Event;
  ///
  /// Entry for this node in the
  /// EFI_RUNTIME_ARCHITECTURE_PROTOCOL.EventHead list.
  ///
  EFI_LIST_ENTRY          Link;
};

///
/// Allows the runtime functionality of the DXE Foundation to be contained in a 
/// separate driver. It also provides hooks for the DXE Foundation to export 
/// information that is needed at runtime. As such, this protocol allows the DXE 
/// Foundation to manage runtime drivers and events. This protocol also implies 
/// that the runtime services required to transition to virtual mode, 
/// SetVirtualAddressMap() and ConvertPointer(), have been registered into the 
/// EFI Runtime Table in the EFI System Partition.  This protocol must be produced 
/// by a runtime DXE driver and may only be consumed by the DXE Foundation.
///
struct _EFI_RUNTIME_ARCH_PROTOCOL {
  EFI_LIST_ENTRY          ImageHead;    ///< A list of type EFI_RUNTIME_IMAGE_ENTRY.
  EFI_LIST_ENTRY          EventHead;    ///< A list of type EFI_RUNTIME_EVENT_ENTRY.
  UINTN                   MemoryDescriptorSize;   ///< Size of a memory descriptor that is return by GetMemoryMap().
  UINT32                  MemoryDesciptorVersion; ///< Version of a memory descriptor that is return by GetMemoryMap().
  UINTN                   MemoryMapSize;///< Size of the memory map in bytes contained in MemoryMapPhysical and MemoryMapVirtual. 
  EFI_MEMORY_DESCRIPTOR   *MemoryMapPhysical;     ///< Pointer to a runtime buffer that contains a copy of 
                                                  ///< the memory map returned via GetMemoryMap().
  EFI_MEMORY_DESCRIPTOR   *MemoryMapVirtual;      ///< Pointer to MemoryMapPhysical that is updated to virtual mode after SetVirtualAddressMap().
  BOOLEAN                 VirtualMode;  ///< Boolean that is TRUE if SetVirtualAddressMap() has been called.
  BOOLEAN                 AtRuntime;    ///< Boolean that is TRUE if ExitBootServices () has been called.
};

extern EFI_GUID gEfiRuntimeArchProtocolGuid;

#endif