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108 lines
3.8 KiB
C
108 lines
3.8 KiB
C
/** @file
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Runtime memory status code worker.
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Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
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(C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include "StatusCodeHandlerSmm.h"
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RUNTIME_MEMORY_STATUSCODE_HEADER *mSmmMemoryStatusCodeTable;
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/**
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Initialize SMM memory status code table as initialization for memory status code worker
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@retval EFI_SUCCESS SMM memory status code table successfully initialized.
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@retval others Errors from gSmst->SmmInstallConfigurationTable().
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**/
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EFI_STATUS
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MemoryStatusCodeInitializeWorker (
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VOID
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)
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{
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EFI_STATUS Status;
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//
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// Allocate SMM memory status code pool.
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//
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mSmmMemoryStatusCodeTable = (RUNTIME_MEMORY_STATUSCODE_HEADER *)AllocateZeroPool(sizeof (RUNTIME_MEMORY_STATUSCODE_HEADER) + PcdGet16 (PcdStatusCodeMemorySize) * 1024);
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ASSERT (mSmmMemoryStatusCodeTable != NULL);
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mSmmMemoryStatusCodeTable->MaxRecordsNumber = (PcdGet16 (PcdStatusCodeMemorySize) * 1024) / sizeof (MEMORY_STATUSCODE_RECORD);
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Status = gSmst->SmmInstallConfigurationTable (
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gSmst,
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&gMemoryStatusCodeRecordGuid,
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&mSmmMemoryStatusCodeTable,
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sizeof (mSmmMemoryStatusCodeTable)
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);
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return Status;
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}
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/**
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Report status code into runtime memory. If the runtime pool is full, roll back to the
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first record and overwrite it.
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@param CodeType Indicates the type of status code being reported.
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@param Value Describes the current status of a hardware or software entity.
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This included information about the class and subclass that is used to
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classify the entity as well as an operation.
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@param Instance The enumeration of a hardware or software entity within
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the system. Valid instance numbers start with 1.
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@param CallerId This optional parameter may be used to identify the caller.
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This parameter allows the status code driver to apply different rules to
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different callers.
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@param Data This optional parameter may be used to pass additional data.
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@retval EFI_SUCCESS Status code successfully recorded in runtime memory status code table.
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**/
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EFI_STATUS
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EFIAPI
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MemoryStatusCodeReportWorker (
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IN EFI_STATUS_CODE_TYPE CodeType,
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IN EFI_STATUS_CODE_VALUE Value,
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IN UINT32 Instance,
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IN EFI_GUID *CallerId,
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IN EFI_STATUS_CODE_DATA *Data OPTIONAL
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)
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{
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MEMORY_STATUSCODE_RECORD *Record;
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//
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// Locate current record buffer.
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//
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Record = (MEMORY_STATUSCODE_RECORD *) (mSmmMemoryStatusCodeTable + 1);
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Record = &Record[mSmmMemoryStatusCodeTable->RecordIndex++];
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//
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// Save status code.
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//
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Record->CodeType = CodeType;
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Record->Value = Value;
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Record->Instance = Instance;
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//
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// If record index equals to max record number, then wrap around record index to zero.
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//
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// The reader of status code should compare the number of records with max records number,
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// If it is equal to or larger than the max number, then the wrap-around had happened,
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// so the first record is pointed by record index.
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// If it is less then max number, index of the first record is zero.
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//
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mSmmMemoryStatusCodeTable->NumberOfRecords++;
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if (mSmmMemoryStatusCodeTable->RecordIndex == mSmmMemoryStatusCodeTable->MaxRecordsNumber) {
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//
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// Wrap around record index.
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//
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mSmmMemoryStatusCodeTable->RecordIndex = 0;
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}
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return EFI_SUCCESS;
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}
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