1 /** @file 2 Guid & data structure used for EFI System Resource Table (ESRT) 3 4 Copyright (c) 2015, Intel Corporation. All rights reserved.<BR> 5 SPDX-License-Identifier: BSD-2-Clause-Patent 6 7 @par Revision Reference: 8 GUIDs defined in UEFI 2.5 spec. 9 10 **/ 11 12 13 #ifndef _SYSTEM_RESOURCE_TABLE_H__ 14 #define _SYSTEM_RESOURCE_TABLE_H__ 15 16 #define EFI_SYSTEM_RESOURCE_TABLE_GUID \ 17 { \ 18 0xb122a263, 0x3661, 0x4f68, {0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80 } \ 19 } 20 21 /// 22 /// Current Entry Version 23 /// 24 #define EFI_SYSTEM_RESOURCE_TABLE_FIRMWARE_RESOURCE_VERSION 1 25 26 /// 27 /// Firmware Type Definitions 28 /// 29 #define ESRT_FW_TYPE_UNKNOWN 0x00000000 30 #define ESRT_FW_TYPE_SYSTEMFIRMWARE 0x00000001 31 #define ESRT_FW_TYPE_DEVICEFIRMWARE 0x00000002 32 #define ESRT_FW_TYPE_UEFIDRIVER 0x00000003 33 34 /// 35 /// Last Attempt Status Values 36 /// 37 #define LAST_ATTEMPT_STATUS_SUCCESS 0x00000000 38 #define LAST_ATTEMPT_STATUS_ERROR_UNSUCCESSFUL 0x00000001 39 #define LAST_ATTEMPT_STATUS_ERROR_INSUFFICIENT_RESOURCES 0x00000002 40 #define LAST_ATTEMPT_STATUS_ERROR_INCORRECT_VERSION 0x00000003 41 #define LAST_ATTEMPT_STATUS_ERROR_INVALID_FORMAT 0x00000004 42 #define LAST_ATTEMPT_STATUS_ERROR_AUTH_ERROR 0x00000005 43 #define LAST_ATTEMPT_STATUS_ERROR_PWR_EVT_AC 0x00000006 44 #define LAST_ATTEMPT_STATUS_ERROR_PWR_EVT_BATT 0x00000007 45 46 typedef struct { 47 /// 48 /// The firmware class field contains a GUID that identifies a firmware component 49 /// that can be updated via UpdateCapsule(). This GUID must be unique within all 50 /// entries of the ESRT. 51 /// 52 EFI_GUID FwClass; 53 /// 54 /// Identifies the type of firmware resource. 55 /// 56 UINT32 FwType; 57 /// 58 /// The firmware version field represents the current version of the firmware 59 /// resource, value must always increase as a larger number represents a newer 60 /// version. 61 /// 62 UINT32 FwVersion; 63 /// 64 /// The lowest firmware resource version to which a firmware resource can be 65 /// rolled back for the given system/device. Generally this is used to protect 66 /// against known and fixed security issues. 67 /// 68 UINT32 LowestSupportedFwVersion; 69 /// 70 /// The capsule flags field contains the CapsuleGuid flags (bits 0- 15) as defined 71 /// in the EFI_CAPSULE_HEADER that will be set in the capsule header. 72 /// 73 UINT32 CapsuleFlags; 74 /// 75 /// The last attempt version field describes the last firmware version for which 76 /// an update was attempted (uses the same format as Firmware Version). 77 /// Last Attempt Version is updated each time an UpdateCapsule() is attempted for 78 /// an ESRT entry and is preserved across reboots (non-volatile). However, in 79 /// cases where the attempt version is not recorded due to limitations in the 80 /// update process, the field shall set to zero after a failed update. Similarly, 81 /// in the case of a removable device, this value is set to 0 in cases where the 82 /// device has not been updated since being added to the system. 83 /// 84 UINT32 LastAttemptVersion; 85 /// 86 /// The last attempt status field describes the result of the last firmware update 87 /// attempt for the firmware resource entry. 88 /// LastAttemptStatus is updated each time an UpdateCapsule() is attempted for an 89 /// ESRT entry and is preserved across reboots (non-volatile). 90 /// If a firmware update has never been attempted or is unknown, for example after 91 /// fresh insertion of a removable device, LastAttemptStatus must be set to Success. 92 /// 93 UINT32 LastAttemptStatus; 94 } EFI_SYSTEM_RESOURCE_ENTRY; 95 96 typedef struct { 97 /// 98 /// The number of firmware resources in the table, must not be zero. 99 /// 100 UINT32 FwResourceCount; 101 /// 102 /// The maximum number of resource array entries that can be within the table 103 /// without reallocating the table, must not be zero. 104 /// 105 UINT32 FwResourceCountMax; 106 /// 107 /// The version of the EFI_SYSTEM_RESOURCE_ENTRY entities used in this table. 108 /// This field should be set to 1. 109 /// 110 UINT64 FwResourceVersion; 111 /// 112 /// Array of EFI_SYSTEM_RESOURCE_ENTRY 113 /// 114 //EFI_SYSTEM_RESOURCE_ENTRY Entries[]; 115 } EFI_SYSTEM_RESOURCE_TABLE; 116 117 extern EFI_GUID gEfiSystemResourceTableGuid; 118 119 #endif 120