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/** @file
Interface header file for the Enhanced warning log library class.
@copyright
INTEL CONFIDENTIAL
Copyright 2018 - 2021 Intel Corporation. <BR>
The source code contained or described herein and all documents related to the
source code ("Material") are owned by Intel Corporation or its suppliers or
licensors. Title to the Material remains with Intel Corporation or its suppliers
and licensors. The Material may contain trade secrets and proprietary and
confidential information of Intel Corporation and its suppliers and licensors,
and is protected by worldwide copyright and trade secret laws and treaty
provisions. No part of the Material may be used, copied, reproduced, modified,
published, uploaded, posted, transmitted, distributed, or disclosed in any way
without Intel's prior express written permission.
No license under any patent, copyright, trade secret or other intellectual
property right is granted to or conferred upon you by disclosure or delivery
of the Materials, either expressly, by implication, inducement, estoppel or
otherwise. Any license under such intellectual property rights must be
express and approved by Intel in writing.
Unless otherwise agreed by Intel in writing, you may not remove or alter
this notice or any other notice embedded in Materials by Intel or
Intel's suppliers or licensors in any way.
**/
#ifndef _ENHANCED_WARNING_LOG_LIB_
#define _ENHANCED_WARNING_LOG_LIB_
#define FSP_RESERVED_LEN 12
#pragma pack(1)
///
/// Enhanced Warning Log Header
///
typedef struct {
EFI_GUID EwlGuid; /// GUID that uniquely identifies the EWL revision
UINT32 Size; /// Total size in bytes including the header and buffer
UINT32 FreeOffset; /// Offset of the beginning of the free space from byte 0
/// of the buffer immediately following this structure
/// Can be used to determine if buffer has sufficient space for next entry
UINT32 Crc; /// 32-bit CRC generated over the whole size minus this crc field
/// Note: UEFI 32-bit CRC implementation (CalculateCrc32) (References [7])
/// Consumers can ignore CRC check if not needed.
UINT32 Reserved; /// Reserved for future use, must be initialized to 0
} EWL_HEADER;
///
/// List of all entry types supported by this revision of EWL
///
typedef enum {
EwlType0 = 0,
EwlType1 = 1,
EwlType2 = 2,
EwlType3 = 3,
EwlType4 = 4,
EwlType5 = 5,
EwlType6 = 6,
EwlType7 = 7,
EwlType8 = 8,
EwlType9 = 9,
EwlType10 = 10,
EwlType11 = 11,
EwlType12 = 12,
EwlType13 = 13,
EwlType14 = 14,
EwlType15 = 15,
EwlType16 = 16,
EwlType17 = 17,
EwlType18 = 18,
EwlType19 = 19,
EwlType20 = 20,
EwlType21 = 21,
EwlType22 = 22,
EwlType23 = 23,
EwlType24 = 24,
EwlType25 = 25,
EwlType26 = 26,
EwlType27 = 27,
EwlType28 = 28,
EwlType29 = 29,
EwlType30 = 30,
EwlType31 = 31,
EwlType32 = 32,
EwlTypeMax,
EwlTypeOem = 0x8000,
EwlTypeDelim = MAX_INT32
} EWL_TYPE;
///
/// EWL severities
///
typedef enum {
EwlSeverityInfo,
EwlSeverityWarning,
EwlSeverityFatal,
EwlSeverityMax,
EwlSeverityDelim = MAX_INT32
} EWL_SEVERITY;
///
/// Generic entry header for parsing the log
///
typedef struct {
EWL_TYPE Type;
UINT16 Size; /// Entries will be packed by byte in contiguous space
EWL_SEVERITY Severity; /// Warning, error, informational, this may be extended in the future
} EWL_ENTRY_HEADER;
///
/// Legacy content provides context of the warning
///
typedef struct {
UINT8 MajorCheckpoint; // EWL Spec - Appendix B
UINT8 MinorCheckpoint;
UINT8 MajorWarningCode; // EWL Spec - Appendix A
UINT8 MinorWarningCode;
} EWL_ENTRY_CONTEXT;
///
/// Legacy content to specify memory location
///
typedef struct {
UINT8 Socket; /// 0xFF = n/a
UINT8 Channel; /// 0xFF = n/a
UINT8 PseudoChannel; /// 0xFF = n/a
UINT8 Dimm; /// 0xFF = n/a
UINT8 Rank; /// 0xFF = n/a
} EWL_ENTRY_MEMORY_LOCATION;
///
/// Type 3 = Enhanced type for command, control IO errors
///
typedef struct {
EWL_ENTRY_HEADER Header;
EWL_ENTRY_CONTEXT Context;
EWL_ENTRY_MEMORY_LOCATION MemoryLocation;
UINT8 reserved1[FSP_RESERVED_LEN]; // MRC_LT Level; MRC_GT Group; GSM_CSN Signal;
UINT8 EyeSize; // 0xFF = n/a
} EWL_ENTRY_TYPE3;
#pragma pack()
///
/// Enhanced Warning Log Spec defined data log structure
///
typedef struct {
EWL_HEADER Header; /// The size will vary by implementation and should not be assumed
UINT8 Buffer[4 * 1024]; /// The spec requirement is that the buffer follow the header
} EWL_PUBLIC_DATA;
///
/// EWL private data structure. This is going to be implementation dependent
/// When we separate OEM hooks via a PPI, we can remove this
///
typedef struct {
UINT32 bufSizeOverflow; // Number of bytes that could not be added to buffer
UINT32 numEntries; // Number of entries currently logged
EWL_PUBLIC_DATA status; // Spec defined EWL
} EWL_PRIVATE_DATA;
#endif // #ifndef _ENHANCED_WARNING_LOG_LIB_
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