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