/** @file | |
Runtime memory status code worker. | |
Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR> | |
This program and the accompanying materials | |
are licensed and made available under the terms and conditions of the BSD License | |
which accompanies this distribution. The full text of the license may be found at | |
http://opensource.org/licenses/bsd-license.php | |
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
**/ | |
#include "StatusCodeRuntimeDxe.h" | |
RUNTIME_MEMORY_STATUSCODE_HEADER *mRtMemoryStatusCodeTable; | |
/** | |
Initialize runtime memory status code table as initialization for runtime memory status code worker | |
@retval EFI_SUCCESS Runtime memory status code table successfully initialized. | |
**/ | |
EFI_STATUS | |
RtMemoryStatusCodeInitializeWorker ( | |
VOID | |
) | |
{ | |
// | |
// Allocate runtime memory status code pool. | |
// | |
mRtMemoryStatusCodeTable = AllocateRuntimePool ( | |
sizeof (RUNTIME_MEMORY_STATUSCODE_HEADER) + | |
PcdGet16 (PcdStatusCodeMemorySize) * 1024 | |
); | |
ASSERT (mRtMemoryStatusCodeTable != NULL); | |
mRtMemoryStatusCodeTable->RecordIndex = 0; | |
mRtMemoryStatusCodeTable->NumberOfRecords = 0; | |
mRtMemoryStatusCodeTable->MaxRecordsNumber = | |
(PcdGet16 (PcdStatusCodeMemorySize) * 1024) / sizeof (MEMORY_STATUSCODE_RECORD); | |
return EFI_SUCCESS; | |
} | |
/** | |
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. | |
@retval EFI_SUCCESS Status code successfully recorded in runtime memory status code table. | |
**/ | |
EFI_STATUS | |
RtMemoryStatusCodeReportWorker ( | |
IN EFI_STATUS_CODE_TYPE CodeType, | |
IN EFI_STATUS_CODE_VALUE Value, | |
IN UINT32 Instance | |
) | |
{ | |
MEMORY_STATUSCODE_RECORD *Record; | |
// | |
// Locate current record buffer. | |
// | |
Record = (MEMORY_STATUSCODE_RECORD *) (mRtMemoryStatusCodeTable + 1); | |
Record = &Record[mRtMemoryStatusCodeTable->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. | |
// | |
mRtMemoryStatusCodeTable->NumberOfRecords++; | |
if (mRtMemoryStatusCodeTable->RecordIndex == mRtMemoryStatusCodeTable->MaxRecordsNumber) { | |
// | |
// Wrap around record index. | |
// | |
mRtMemoryStatusCodeTable->RecordIndex = 0; | |
} | |
return EFI_SUCCESS; | |
} | |