[mirror_edk2.git] / MdeModulePkg / Universal / Acpi / FirmwarePerformanceDataTableSmm / FirmwarePerformanceSmm.c

/** @file\r
  This module collects performance data for SMM driver boot records and S3 Suspend Performance Record.\r
\r
  This module registers report status code listener to collect performance data\r
  for SMM driver boot records and S3 Suspend Performance Record.\r
\r
  Caution: This module requires additional review when modified.\r
  This driver will have external input - communicate buffer in SMM mode.\r
  This external input must be validated carefully to avoid security issue like\r
  buffer overflow, integer overflow.\r
\r
  FpdtSmiHandler() will receive untrusted input and do basic validation.\r
\r
  Copyright (c) 2011 - 2016, Intel Corporation. All rights reserved.<BR>\r
  This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#include <PiSmm.h>\r
\r
#include <Protocol/SmmReportStatusCodeHandler.h>\r
\r
#include <Guid/FirmwarePerformance.h>\r
\r
#include <Library/SmmServicesTableLib.h>\r
#include <Library/BaseLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/TimerLib.h>\r
#include <Library/LockBoxLib.h>\r
#include <Library/PcdLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
#include <Library/SynchronizationLib.h>\r
#include <Library/SmmMemLib.h>\r
\r
SMM_BOOT_PERFORMANCE_TABLE    *mSmmBootPerformanceTable = NULL;\r
\r
EFI_SMM_RSC_HANDLER_PROTOCOL  *mRscHandlerProtocol    = NULL;\r
UINT64                        mSuspendStartTime       = 0;\r
BOOLEAN                       mS3SuspendLockBoxSaved  = FALSE;\r
UINT32                        mBootRecordSize = 0;\r
UINT8                         *mBootRecordBuffer = NULL;\r
\r
SPIN_LOCK                     mSmmFpdtLock;\r
BOOLEAN                       mSmramIsOutOfResource = FALSE;\r
\r
/**\r
  Report status code listener for SMM. This is used to record the performance\r
  data for S3 Suspend Start and S3 Suspend End in FPDT.\r
\r
  @param[in]  CodeType            Indicates the type of status code being reported.\r
  @param[in]  Value               Describes the current status of a hardware or software entity.\r
                                  This included information about the class and subclass that is used to\r
                                  classify the entity as well as an operation.\r
  @param[in]  Instance            The enumeration of a hardware or software entity within\r
                                  the system. Valid instance numbers start with 1.\r
  @param[in]  CallerId            This optional parameter may be used to identify the caller.\r
                                  This parameter allows the status code driver to apply different rules to\r
                                  different callers.\r
  @param[in]  Data                This optional parameter may be used to pass additional data.\r
\r
  @retval EFI_SUCCESS             Status code is what we expected.\r
  @retval EFI_UNSUPPORTED         Status code not supported.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
FpdtStatusCodeListenerSmm (\r
  IN EFI_STATUS_CODE_TYPE     CodeType,\r
  IN EFI_STATUS_CODE_VALUE    Value,\r
  IN UINT32                   Instance,\r
  IN EFI_GUID                 *CallerId,\r
  IN EFI_STATUS_CODE_DATA     *Data\r
  )\r
{\r
  EFI_STATUS                           Status;\r
  UINT64                               CurrentTime;\r
  EFI_ACPI_5_0_FPDT_S3_SUSPEND_RECORD  S3SuspendRecord;\r
\r
  //\r
  // Check whether status code is what we are interested in.\r
  //\r
  if ((CodeType & EFI_STATUS_CODE_TYPE_MASK) != EFI_PROGRESS_CODE) {\r
    return EFI_UNSUPPORTED;\r
  }\r
  \r
  //\r
  // Collect one or more Boot records in boot time\r
  //\r
  if (Data != NULL && CompareGuid (&Data->Type, &gEdkiiFpdtExtendedFirmwarePerformanceGuid)) {\r
    AcquireSpinLock (&mSmmFpdtLock);\r
    //\r
    // Get the boot performance data.\r
    //\r
    CopyMem (&mSmmBootPerformanceTable, Data + 1, Data->Size);\r
    mBootRecordBuffer = ((UINT8 *) (mSmmBootPerformanceTable)) + sizeof (SMM_BOOT_PERFORMANCE_TABLE);\r
\r
    ReleaseSpinLock (&mSmmFpdtLock);\r
    return EFI_SUCCESS;\r
  }\r
\r
  if ((Value != PcdGet32 (PcdProgressCodeS3SuspendStart)) &&\r
      (Value != PcdGet32 (PcdProgressCodeS3SuspendEnd))) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  //\r
  // Retrieve current time.\r
  //\r
  CurrentTime = GetTimeInNanoSecond (GetPerformanceCounter ());\r
\r
  if (Value == PcdGet32 (PcdProgressCodeS3SuspendStart)) {\r
    //\r
    // S3 Suspend started, record the performance data and return.\r
    //\r
    mSuspendStartTime = CurrentTime;\r
    return EFI_SUCCESS;\r
  }\r
\r
  //\r
  // We are going to S3 sleep, record S3 Suspend End performance data.\r
  //\r
  S3SuspendRecord.SuspendStart = mSuspendStartTime;\r
  S3SuspendRecord.SuspendEnd   = CurrentTime;\r
\r
  //\r
  // Save S3 suspend performance data to lock box, it will be used by Firmware Performance PEIM.\r
  //\r
  if (!mS3SuspendLockBoxSaved) {\r
    Status = SaveLockBox (\r
               &gEfiFirmwarePerformanceGuid,\r
               &S3SuspendRecord,\r
               sizeof (EFI_ACPI_5_0_FPDT_S3_SUSPEND_RECORD)\r
               );\r
    ASSERT_EFI_ERROR (Status);\r
\r
    mS3SuspendLockBoxSaved = TRUE;\r
  } else {\r
    Status = UpdateLockBox (\r
               &gEfiFirmwarePerformanceGuid,\r
               0,\r
               &S3SuspendRecord,\r
               sizeof (EFI_ACPI_5_0_FPDT_S3_SUSPEND_RECORD)\r
               );\r
    ASSERT_EFI_ERROR (Status);\r
  }\r
\r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  Communication service SMI Handler entry.\r
\r
  This SMI handler provides services for report SMM boot records. \r
\r
  Caution: This function may receive untrusted input.\r
  Communicate buffer and buffer size are external input, so this function will do basic validation.\r
\r
  @param[in]     DispatchHandle  The unique handle assigned to this handler by SmiHandlerRegister().\r
  @param[in]     RegisterContext Points to an optional handler context which was specified when the\r
                                 handler was registered.\r
  @param[in, out] CommBuffer     A pointer to a collection of data in memory that will\r
                                 be conveyed from a non-SMM environment into an SMM environment.\r
  @param[in, out] CommBufferSize The size of the CommBuffer.\r
\r
  @retval EFI_SUCCESS                         The interrupt was handled and quiesced. No other handlers \r
                                              should still be called.\r
  @retval EFI_WARN_INTERRUPT_SOURCE_QUIESCED  The interrupt has been quiesced but other handlers should \r
                                              still be called.\r
  @retval EFI_WARN_INTERRUPT_SOURCE_PENDING   The interrupt is still pending and other handlers should still \r
                                              be called.\r
  @retval EFI_INTERRUPT_PENDING               The interrupt could not be quiesced.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
FpdtSmiHandler (\r
  IN     EFI_HANDLE                   DispatchHandle,\r
  IN     CONST VOID                   *RegisterContext,\r
  IN OUT VOID                         *CommBuffer,\r
  IN OUT UINTN                        *CommBufferSize\r
  )\r
{\r
  EFI_STATUS                   Status;\r
  SMM_BOOT_RECORD_COMMUNICATE  *SmmCommData;\r
  UINTN                        BootRecordOffset;\r
  UINTN                        BootRecordSize;\r
  VOID                         *BootRecordData;\r
  UINTN                        TempCommBufferSize;\r
\r
  //\r
  // If input is invalid, stop processing this SMI\r
  //\r
  if (CommBuffer == NULL || CommBufferSize == NULL) {\r
    return EFI_SUCCESS;\r
  }\r
\r
  TempCommBufferSize = *CommBufferSize;\r
\r
  if(TempCommBufferSize < sizeof (SMM_BOOT_RECORD_COMMUNICATE)) {\r
    return EFI_SUCCESS;\r
  }\r
  \r
  if (!SmmIsBufferOutsideSmmValid ((UINTN)CommBuffer, TempCommBufferSize)) {\r
    DEBUG ((EFI_D_ERROR, "FpdtSmiHandler: SMM communication data buffer in SMRAM or overflow!\n"));\r
    return EFI_SUCCESS;\r
  }\r
\r
  SmmCommData = (SMM_BOOT_RECORD_COMMUNICATE*)CommBuffer;\r
\r
  Status = EFI_SUCCESS;\r
\r
  switch (SmmCommData->Function) {\r
    case SMM_FPDT_FUNCTION_GET_BOOT_RECORD_SIZE :\r
      if (mSmmBootPerformanceTable != NULL) {\r
        mBootRecordSize = mSmmBootPerformanceTable->Header.Length - sizeof (SMM_BOOT_PERFORMANCE_TABLE);\r
      }\r
      SmmCommData->BootRecordSize = mBootRecordSize;\r
      break;\r
\r
    case SMM_FPDT_FUNCTION_GET_BOOT_RECORD_DATA :\r
      Status = EFI_UNSUPPORTED;\r
      break;\r
\r
    case SMM_FPDT_FUNCTION_GET_BOOT_RECORD_DATA_BY_OFFSET :\r
      BootRecordOffset = SmmCommData->BootRecordOffset;\r
      BootRecordData   = SmmCommData->BootRecordData;\r
      BootRecordSize   = SmmCommData->BootRecordSize;\r
      if (BootRecordData == NULL || BootRecordOffset >= mBootRecordSize) {\r
        Status = EFI_INVALID_PARAMETER;\r
        break;\r
      }\r
      \r
      //\r
      // Sanity check\r
      //\r
      if (BootRecordSize > mBootRecordSize - BootRecordOffset) {\r
        BootRecordSize = mBootRecordSize - BootRecordOffset;\r
      }\r
      SmmCommData->BootRecordSize = BootRecordSize;\r
      if (!SmmIsBufferOutsideSmmValid ((UINTN)BootRecordData, BootRecordSize)) {\r
        DEBUG ((EFI_D_ERROR, "FpdtSmiHandler: SMM Data buffer in SMRAM or overflow!\n"));\r
        Status = EFI_ACCESS_DENIED;\r
        break;\r
      }\r
      \r
      CopyMem (\r
       (UINT8*)BootRecordData, \r
       mBootRecordBuffer + BootRecordOffset, \r
       BootRecordSize\r
       );\r
      break;\r
\r
    default:\r
      Status = EFI_UNSUPPORTED;\r
  }\r
\r
  SmmCommData->ReturnStatus = Status;\r
  \r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  The module Entry Point of the Firmware Performance Data Table SMM driver.\r
\r
  @param[in]  ImageHandle    The firmware allocated handle for the EFI image.\r
  @param[in]  SystemTable    A pointer to the EFI System Table.\r
\r
  @retval EFI_SUCCESS    The entry point is executed successfully.\r
  @retval Other          Some error occurs when executing this entry point.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
FirmwarePerformanceSmmEntryPoint (\r
  IN EFI_HANDLE          ImageHandle,\r
  IN EFI_SYSTEM_TABLE    *SystemTable\r
  )\r
{\r
  EFI_STATUS                Status;\r
  EFI_HANDLE                Handle;\r
\r
  //\r
  // Initialize spin lock\r
  //\r
  InitializeSpinLock (&mSmmFpdtLock); \r
   \r
  //\r
  // Get SMM Report Status Code Handler Protocol.\r
  //\r
  Status = gSmst->SmmLocateProtocol (\r
                    &gEfiSmmRscHandlerProtocolGuid,\r
                    NULL,\r
                    (VOID **) &mRscHandlerProtocol\r
                    );\r
  ASSERT_EFI_ERROR (Status);\r
\r
  //\r
  // Register report status code listener for BootRecords and S3 Suspend Start and End.\r
  //\r
  Status = mRscHandlerProtocol->Register (FpdtStatusCodeListenerSmm);\r
  ASSERT_EFI_ERROR (Status);\r
\r
  //\r
  // Register SMI handler.\r
  //\r
  Handle = NULL;\r
  Status = gSmst->SmiHandlerRegister (FpdtSmiHandler, &gEfiFirmwarePerformanceGuid, &Handle);\r
  ASSERT_EFI_ERROR (Status);\r
\r
  return Status;\r
}\r
Commit	Line	Data
0284e90c	1	/** @file\r
1c0cc375	2	This module collects performance data for SMM driver boot records and S3 Suspend Performance Record.\r
0284e90c	3	\r
1c0cc375 LG	4	This module registers report status code listener to collect performance data\r
1c0cc375 LG	5	for SMM driver boot records and S3 Suspend Performance Record.\r
0284e90c	6	\r
ccd2f6b0	7	Caution: This module requires additional review when modified.\r
	8	This driver will have external input - communicate buffer in SMM mode.\r
	9	This external input must be validated carefully to avoid security issue like\r
	10	buffer overflow, integer overflow.\r
	11	\r
	12	FpdtSmiHandler() will receive untrusted input and do basic validation.\r
	13	\r
77a6e6c4	14	Copyright (c) 2011 - 2016, Intel Corporation. All rights reserved.<BR>\r
0284e90c LG	15	This program and the accompanying materials\r
	16	are licensed and made available under the terms and conditions of the BSD License\r
	17	which accompanies this distribution. The full text of the license may be found at\r
	18	http://opensource.org/licenses/bsd-license.php\r
	19	\r
	20	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	21	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	22	\r
	23	**/\r
	24	\r
	25	#include <PiSmm.h>\r
	26	\r
0284e90c LG	27	#include <Protocol/SmmReportStatusCodeHandler.h>\r
	28	\r
	29	#include <Guid/FirmwarePerformance.h>\r
	30	\r
	31	#include <Library/SmmServicesTableLib.h>\r
	32	#include <Library/BaseLib.h>\r
	33	#include <Library/DebugLib.h>\r
	34	#include <Library/TimerLib.h>\r
	35	#include <Library/LockBoxLib.h>\r
	36	#include <Library/PcdLib.h>\r
1c0cc375 LG	37	#include <Library/BaseMemoryLib.h>\r
	38	#include <Library/MemoryAllocationLib.h>\r
	39	#include <Library/UefiBootServicesTableLib.h>\r
	40	#include <Library/SynchronizationLib.h>\r
842b1242	41	#include <Library/SmmMemLib.h>\r
1c0cc375	42	\r
718a937e	43	SMM_BOOT_PERFORMANCE_TABLE *mSmmBootPerformanceTable = NULL;\r
0284e90c LG	44	\r
	45	EFI_SMM_RSC_HANDLER_PROTOCOL *mRscHandlerProtocol = NULL;\r
	46	UINT64 mSuspendStartTime = 0;\r
	47	BOOLEAN mS3SuspendLockBoxSaved = FALSE;\r
1c0cc375	48	UINT32 mBootRecordSize = 0;\r
1c0cc375 LG	49	UINT8 *mBootRecordBuffer = NULL;\r
1c0cc375 LG	50	\r
1c0cc375 LG	51	SPIN_LOCK mSmmFpdtLock;\r
1c0cc375 LG	52	BOOLEAN mSmramIsOutOfResource = FALSE;\r
0284e90c LG	53	\r
	54	/**\r
	55	Report status code listener for SMM. This is used to record the performance\r
	56	data for S3 Suspend Start and S3 Suspend End in FPDT.\r
	57	\r
	58	@param[in] CodeType Indicates the type of status code being reported.\r
	59	@param[in] Value Describes the current status of a hardware or software entity.\r
	60	This included information about the class and subclass that is used to\r
	61	classify the entity as well as an operation.\r
	62	@param[in] Instance The enumeration of a hardware or software entity within\r
	63	the system. Valid instance numbers start with 1.\r
	64	@param[in] CallerId This optional parameter may be used to identify the caller.\r
	65	This parameter allows the status code driver to apply different rules to\r
	66	different callers.\r
	67	@param[in] Data This optional parameter may be used to pass additional data.\r
	68	\r
	69	@retval EFI_SUCCESS Status code is what we expected.\r
	70	@retval EFI_UNSUPPORTED Status code not supported.\r
	71	\r
	72	**/\r
	73	EFI_STATUS\r
	74	EFIAPI\r
	75	FpdtStatusCodeListenerSmm (\r
	76	IN EFI_STATUS_CODE_TYPE CodeType,\r
	77	IN EFI_STATUS_CODE_VALUE Value,\r
	78	IN UINT32 Instance,\r
	79	IN EFI_GUID *CallerId,\r
	80	IN EFI_STATUS_CODE_DATA *Data\r
	81	)\r
	82	{\r
	83	EFI_STATUS Status;\r
	84	UINT64 CurrentTime;\r
	85	EFI_ACPI_5_0_FPDT_S3_SUSPEND_RECORD S3SuspendRecord;\r
	86	\r
	87	//\r
	88	// Check whether status code is what we are interested in.\r
	89	//\r
	90	if ((CodeType & EFI_STATUS_CODE_TYPE_MASK) != EFI_PROGRESS_CODE) {\r
	91	return EFI_UNSUPPORTED;\r
	92	}\r
1c0cc375 LG	93	\r
	94	//\r
	95	// Collect one or more Boot records in boot time\r
	96	//\r
718a937e	97	if (Data != NULL && CompareGuid (&Data->Type, &gEdkiiFpdtExtendedFirmwarePerformanceGuid)) {\r
1c0cc375	98	AcquireSpinLock (&mSmmFpdtLock);\r
1c0cc375	99	//\r
718a937e	100	// Get the boot performance data.\r
1c0cc375	101	//\r
718a937e DB	102	CopyMem (&mSmmBootPerformanceTable, Data + 1, Data->Size);\r
	103	mBootRecordBuffer = ((UINT8 *) (mSmmBootPerformanceTable)) + sizeof (SMM_BOOT_PERFORMANCE_TABLE);\r
	104	\r
1c0cc375 LG	105	ReleaseSpinLock (&mSmmFpdtLock);\r
	106	return EFI_SUCCESS;\r
	107	}\r
	108	\r
0284e90c LG	109	if ((Value != PcdGet32 (PcdProgressCodeS3SuspendStart)) &&\r
	110	(Value != PcdGet32 (PcdProgressCodeS3SuspendEnd))) {\r
	111	return EFI_UNSUPPORTED;\r
	112	}\r
	113	\r
	114	//\r
	115	// Retrieve current time.\r
	116	//\r
	117	CurrentTime = GetTimeInNanoSecond (GetPerformanceCounter ());\r
	118	\r
	119	if (Value == PcdGet32 (PcdProgressCodeS3SuspendStart)) {\r
	120	//\r
	121	// S3 Suspend started, record the performance data and return.\r
	122	//\r
	123	mSuspendStartTime = CurrentTime;\r
	124	return EFI_SUCCESS;\r
	125	}\r
	126	\r
	127	//\r
	128	// We are going to S3 sleep, record S3 Suspend End performance data.\r
	129	//\r
	130	S3SuspendRecord.SuspendStart = mSuspendStartTime;\r
	131	S3SuspendRecord.SuspendEnd = CurrentTime;\r
	132	\r
	133	//\r
	134	// Save S3 suspend performance data to lock box, it will be used by Firmware Performance PEIM.\r
	135	//\r
	136	if (!mS3SuspendLockBoxSaved) {\r
	137	Status = SaveLockBox (\r
	138	&gEfiFirmwarePerformanceGuid,\r
	139	&S3SuspendRecord,\r
	140	sizeof (EFI_ACPI_5_0_FPDT_S3_SUSPEND_RECORD)\r
	141	);\r
	142	ASSERT_EFI_ERROR (Status);\r
	143	\r
	144	mS3SuspendLockBoxSaved = TRUE;\r
	145	} else {\r
	146	Status = UpdateLockBox (\r
	147	&gEfiFirmwarePerformanceGuid,\r
	148	0,\r
	149	&S3SuspendRecord,\r
	150	sizeof (EFI_ACPI_5_0_FPDT_S3_SUSPEND_RECORD)\r
	151	);\r
	152	ASSERT_EFI_ERROR (Status);\r
	153	}\r
	154	\r
	155	return EFI_SUCCESS;\r
	156	}\r
	157	\r
1c0cc375 LG	158	/**\r
	159	Communication service SMI Handler entry.\r
	160	\r
	161	This SMI handler provides services for report SMM boot records. \r
	162	\r
ccd2f6b0	163	Caution: This function may receive untrusted input.\r
	164	Communicate buffer and buffer size are external input, so this function will do basic validation.\r
	165	\r
1c0cc375 LG	166	@param[in] DispatchHandle The unique handle assigned to this handler by SmiHandlerRegister().\r
	167	@param[in] RegisterContext Points to an optional handler context which was specified when the\r
	168	handler was registered.\r
	169	@param[in, out] CommBuffer A pointer to a collection of data in memory that will\r
	170	be conveyed from a non-SMM environment into an SMM environment.\r
	171	@param[in, out] CommBufferSize The size of the CommBuffer.\r
	172	\r
ccd2f6b0	173	@retval EFI_SUCCESS The interrupt was handled and quiesced. No other handlers \r
	174	should still be called.\r
	175	@retval EFI_WARN_INTERRUPT_SOURCE_QUIESCED The interrupt has been quiesced but other handlers should \r
	176	still be called.\r
	177	@retval EFI_WARN_INTERRUPT_SOURCE_PENDING The interrupt is still pending and other handlers should still \r
	178	be called.\r
	179	@retval EFI_INTERRUPT_PENDING The interrupt could not be quiesced.\r
	180	\r
1c0cc375 LG	181	**/\r
	182	EFI_STATUS\r
	183	EFIAPI\r
	184	FpdtSmiHandler (\r
	185	IN EFI_HANDLE DispatchHandle,\r
	186	IN CONST VOID *RegisterContext,\r
	187	IN OUT VOID *CommBuffer,\r
	188	IN OUT UINTN *CommBufferSize\r
	189	)\r
	190	{\r
	191	EFI_STATUS Status;\r
	192	SMM_BOOT_RECORD_COMMUNICATE *SmmCommData;\r
77a6e6c4	193	UINTN BootRecordOffset;\r
5e5bb2a9 SZ	194	UINTN BootRecordSize;\r
5e5bb2a9 SZ	195	VOID *BootRecordData;\r
164a9b67	196	UINTN TempCommBufferSize;\r
ccd2f6b0	197	\r
	198	//\r
	199	// If input is invalid, stop processing this SMI\r
	200	//\r
	201	if (CommBuffer == NULL \|\| CommBufferSize == NULL) {\r
	202	return EFI_SUCCESS;\r
	203	}\r
	204	\r
164a9b67 SZ	205	TempCommBufferSize = *CommBufferSize;\r
	206	\r
	207	if(TempCommBufferSize < sizeof (SMM_BOOT_RECORD_COMMUNICATE)) {\r
ccd2f6b0	208	return EFI_SUCCESS;\r
ccd2f6b0	209	}\r
1c0cc375	210	\r
842b1242	211	if (!SmmIsBufferOutsideSmmValid ((UINTN)CommBuffer, TempCommBufferSize)) {\r
5e5bb2a9	212	DEBUG ((EFI_D_ERROR, "FpdtSmiHandler: SMM communication data buffer in SMRAM or overflow!\n"));\r
ccd2f6b0	213	return EFI_SUCCESS;\r
1c0cc375 LG	214	}\r
1c0cc375 LG	215	\r
1c0cc375 LG	216	SmmCommData = (SMM_BOOT_RECORD_COMMUNICATE*)CommBuffer;\r
1c0cc375 LG	217	\r
ccd2f6b0	218	Status = EFI_SUCCESS;\r
ccd2f6b0	219	\r
1c0cc375 LG	220	switch (SmmCommData->Function) {\r
1c0cc375 LG	221	case SMM_FPDT_FUNCTION_GET_BOOT_RECORD_SIZE :\r
718a937e DB	222	if (mSmmBootPerformanceTable != NULL) {\r
	223	mBootRecordSize = mSmmBootPerformanceTable->Header.Length - sizeof (SMM_BOOT_PERFORMANCE_TABLE);\r
	224	}\r
77a6e6c4 LG	225	SmmCommData->BootRecordSize = mBootRecordSize;\r
77a6e6c4 LG	226	break;\r
1c0cc375 LG	227	\r
1c0cc375 LG	228	case SMM_FPDT_FUNCTION_GET_BOOT_RECORD_DATA :\r
77a6e6c4 LG	229	Status = EFI_UNSUPPORTED;\r
	230	break;\r
	231	\r
	232	case SMM_FPDT_FUNCTION_GET_BOOT_RECORD_DATA_BY_OFFSET :\r
	233	BootRecordOffset = SmmCommData->BootRecordOffset;\r
	234	BootRecordData = SmmCommData->BootRecordData;\r
	235	BootRecordSize = SmmCommData->BootRecordSize;\r
	236	if (BootRecordData == NULL \|\| BootRecordOffset >= mBootRecordSize) {\r
	237	Status = EFI_INVALID_PARAMETER;\r
	238	break;\r
	239	}\r
	240	\r
	241	//\r
	242	// Sanity check\r
	243	//\r
	244	if (BootRecordSize > mBootRecordSize - BootRecordOffset) {\r
	245	BootRecordSize = mBootRecordSize - BootRecordOffset;\r
	246	}\r
	247	SmmCommData->BootRecordSize = BootRecordSize;\r
	248	if (!SmmIsBufferOutsideSmmValid ((UINTN)BootRecordData, BootRecordSize)) {\r
	249	DEBUG ((EFI_D_ERROR, "FpdtSmiHandler: SMM Data buffer in SMRAM or overflow!\n"));\r
	250	Status = EFI_ACCESS_DENIED;\r
	251	break;\r
	252	}\r
	253	\r
	254	CopyMem (\r
	255	(UINT8*)BootRecordData, \r
	256	mBootRecordBuffer + BootRecordOffset, \r
	257	BootRecordSize\r
	258	);\r
	259	break;\r
1c0cc375 LG	260	\r
1c0cc375 LG	261	default:\r
77a6e6c4	262	Status = EFI_UNSUPPORTED;\r
1c0cc375 LG	263	}\r
	264	\r
	265	SmmCommData->ReturnStatus = Status;\r
ccd2f6b0	266	\r
1c0cc375 LG	267	return EFI_SUCCESS;\r
	268	}\r
	269	\r
0284e90c LG	270	/**\r
	271	The module Entry Point of the Firmware Performance Data Table SMM driver.\r
	272	\r
	273	@param[in] ImageHandle The firmware allocated handle for the EFI image.\r
	274	@param[in] SystemTable A pointer to the EFI System Table.\r
	275	\r
	276	@retval EFI_SUCCESS The entry point is executed successfully.\r
	277	@retval Other Some error occurs when executing this entry point.\r
	278	\r
	279	**/\r
	280	EFI_STATUS\r
	281	EFIAPI\r
	282	FirmwarePerformanceSmmEntryPoint (\r
	283	IN EFI_HANDLE ImageHandle,\r
	284	IN EFI_SYSTEM_TABLE *SystemTable\r
	285	)\r
	286	{\r
1c0cc375 LG	287	EFI_STATUS Status;\r
1c0cc375 LG	288	EFI_HANDLE Handle;\r
0284e90c	289	\r
1c0cc375 LG	290	//\r
	291	// Initialize spin lock\r
	292	//\r
	293	InitializeSpinLock (&mSmmFpdtLock); \r
	294	\r
	295	//\r
	296	// Get SMM Report Status Code Handler Protocol.\r
	297	//\r
	298	Status = gSmst->SmmLocateProtocol (\r
	299	&gEfiSmmRscHandlerProtocolGuid,\r
	300	NULL,\r
	301	(VOID **) &mRscHandlerProtocol\r
	302	);\r
	303	ASSERT_EFI_ERROR (Status);\r
0284e90c	304	\r
1c0cc375 LG	305	//\r
	306	// Register report status code listener for BootRecords and S3 Suspend Start and End.\r
	307	//\r
	308	Status = mRscHandlerProtocol->Register (FpdtStatusCodeListenerSmm);\r
	309	ASSERT_EFI_ERROR (Status);\r
0284e90c	310	\r
1c0cc375 LG	311	//\r
	312	// Register SMI handler.\r
	313	//\r
	314	Handle = NULL;\r
	315	Status = gSmst->SmiHandlerRegister (FpdtSmiHandler, &gEfiFirmwarePerformanceGuid, &Handle);\r
	316	ASSERT_EFI_ERROR (Status);\r
	317	\r
	318	return Status;\r
0284e90c	319	}\r