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