mirror of https://github.com/acidanthera/audk.git
128 lines
4.7 KiB
C
128 lines
4.7 KiB
C
/** @file
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PEI memory status code worker.
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Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "StatusCodeHandlerPei.h"
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/**
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Create the first memory status code GUID'ed HOB as initialization for memory status code worker.
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@retval EFI_SUCCESS The GUID'ed HOB is created successfully.
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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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//
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// Create memory status code GUID'ed HOB.
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//
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MEMORY_STATUSCODE_PACKET_HEADER *PacketHeader;
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//
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// Build GUID'ed HOB with PCD defined size.
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//
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PacketHeader = BuildGuidHob (
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&gMemoryStatusCodeRecordGuid,
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PcdGet16 (PcdStatusCodeMemorySize) * 1024 + sizeof (MEMORY_STATUSCODE_PACKET_HEADER)
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);
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ASSERT (PacketHeader != NULL);
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PacketHeader->MaxRecordsNumber = (PcdGet16 (PcdStatusCodeMemorySize) * 1024) / sizeof (MEMORY_STATUSCODE_RECORD);
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PacketHeader->PacketIndex = 0;
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PacketHeader->RecordIndex = 0;
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return EFI_SUCCESS;
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}
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/**
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Report status code into GUID'ed HOB.
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This function reports status code into GUID'ed HOB. If not all packets are full, then
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write status code into available entry. Otherwise, create a new packet for it.
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@param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.
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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
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software entity. This includes information about the class and
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subclass that is used to classify the entity as well as an operation.
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For progress codes, the operation is the current activity.
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For error codes, it is the exception.For debug codes,it is not defined at this time.
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@param Instance The enumeration of a hardware or software entity within
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the system. A system may contain multiple entities that match a class/subclass
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pairing. The instance differentiates between them. An instance of 0 indicates
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that instance information is unavailable, not meaningful, or not relevant.
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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 The function always return EFI_SUCCESS.
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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 CONST EFI_PEI_SERVICES **PeiServices,
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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 CONST EFI_GUID *CallerId,
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IN CONST EFI_STATUS_CODE_DATA *Data OPTIONAL
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)
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{
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EFI_PEI_HOB_POINTERS Hob;
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MEMORY_STATUSCODE_PACKET_HEADER *PacketHeader;
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MEMORY_STATUSCODE_RECORD *Record;
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//
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// Find GUID'ed HOBs to locate current record buffer.
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//
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Hob.Raw = GetFirstGuidHob (&gMemoryStatusCodeRecordGuid);
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ASSERT (Hob.Raw != NULL);
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PacketHeader = (MEMORY_STATUSCODE_PACKET_HEADER *) GET_GUID_HOB_DATA (Hob.Guid);
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Record = (MEMORY_STATUSCODE_RECORD *) (PacketHeader + 1);
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Record = &Record[PacketHeader->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->Instance = Instance;
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Record->Value = Value;
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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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if (PacketHeader->RecordIndex == PacketHeader->MaxRecordsNumber) {
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//
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// Wrap around record index.
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//
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PacketHeader->RecordIndex = 0;
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PacketHeader->PacketIndex ++;
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}
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return EFI_SUCCESS;
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}
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