MdePkg/Include/Guid/RtPropertiesTable.h

   1 /** @file
   2 Guid & data structure for EFI_RT _PROPERTIES_TABLE, designed to be published by a
   3 platform if it no longer  supports all EFI runtime services once ExitBootServices()
   4 has been called by the OS. Introduced in UEFI 2.8a.
   5
   6
   7 Copyright (c) 2020, American Megatrends International LLC. All rights reserved.<BR>
   8 SPDX-License-Identifier: BSD-2-Clause-Patent
   9
  10 **/
  11
  12 #ifndef __RT_PROPERTIES_TABLE_GUID_H__
  13 #define __RT_PROPERTIES_TABLE_GUID_H__
  14
  15 //
  16 // Table, defined here, should be published by a platform if it no longer supports all EFI runtime
  17 // services once ExitBootServices() has been called by the OS. Note that this is merely a hint
  18 // to the OS, which it is free to ignore, and so the platform is still required to provide callable
  19 // implementations of unsupported runtime services that simply return EFI_UNSUPPORTED.
  20 //
  21 #define EFI_RT_PROPERTIES_TABLE_GUID \
  22     { 0xeb66918a, 0x7eef, 0x402a, \
  23     { 0x84, 0x2e, 0x93, 0x1d, 0x21, 0xc3, 0x8a, 0xe9 }}
  24
  25
  26
  27
  28 #pragma pack(1)
  29
  30 typedef struct {
  31   ///
  32   /// Version of the structure, must be 0x1.
  33   ///
  34   UINT16 Version;
  35
  36   ///
  37   /// Size in bytes of the entire EFI_RT_PROPERTIES_TABLE, must be 8.
  38   ///
  39   UINT16 Length;
  40
  41   ///
  42   /// Bitmask of which calls are or are not supported, where a bit set to 1 indicates
  43   /// that the call is supported, and 0 indicates that it is not.
  44   ///
  45   UINT32 RuntimeServicesSupported;
  46 } EFI_RT_PROPERTIES_TABLE;
  47
  48 #pragma pack()
  49
  50 #define EFI_RT_PROPERTIES_TABLE_VERSION 0x1
  51
  52 #define EFI_RT_SUPPORTED_GET_TIME                       0x0001
  53 #define EFI_RT_SUPPORTED_SET_TIME                       0x0002
  54 #define EFI_RT_SUPPORTED_GET_WAKEUP_TIME                0x0004
  55 #define EFI_RT_SUPPORTED_SET_WAKEUP_TIME                0x0008
  56 #define EFI_RT_SUPPORTED_GET_VARIABLE                   0x0010
  57 #define EFI_RT_SUPPORTED_GET_NEXT_VARIABLE_NAME         0x0020
  58 #define EFI_RT_SUPPORTED_SET_VARIABLE                   0x0040
  59 #define EFI_RT_SUPPORTED_SET_VIRTUAL_ADDRESS_MAP        0x0080
  60 #define EFI_RT_SUPPORTED_CONVERT_POINTER                0x0100
  61 #define EFI_RT_SUPPORTED_GET_NEXT_HIGH_MONOTONIC_COUNT  0x0200
  62 #define EFI_RT_SUPPORTED_RESET_SYSTEM                   0x0400
  63 #define EFI_RT_SUPPORTED_UPDATE_CAPSULE                 0x0800
  64 #define EFI_RT_SUPPORTED_QUERY_CAPSULE_CAPABILITIES     0x1000
  65 #define EFI_RT_SUPPORTED_QUERY_VARIABLE_INFO            0x2000
  66
  67 extern EFI_GUID gEfiRtPropertiesTableGuid;
  68
  69 #endif