[mirror_edk2.git] / MdePkg / Library / UefiLib / UefiNotTiano.c

/** @file\r
  Library functions that abstract areas of conflict between Tiano an UEFI 2.0.\r
\r
  Help Port Framework/Tinao code that has conflicts with UEFI 2.0 by hiding the\r
  oldconflicts with library functions and supporting implementations of the old\r
  (EDK/EFI 1.10) and new (EDK II/UEFI 2.0) way. This module is a DXE driver as\r
  it contains DXE enum extensions for EFI event services.\r
\r
Copyright (c) 2006 - 2007, Intel Corporation<BR>\r
All rights reserved. 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
\r
/**\r
  An empty function to pass error checking of CreateEventEx ().\r
\r
  This empty function ensures that EFI_EVENT_NOTIFY_SIGNAL_ALL is error\r
  checked correctly since it is now mapped into CreateEventEx() in UEFI 2.0.\r
\r
**/\r
STATIC\r
VOID\r
EFIAPI\r
InternalEmptyFuntion (\r
  IN EFI_EVENT                Event,\r
  IN VOID                     *Context\r
  )\r
{\r
  return;\r
}\r
\r
/**\r
  Create a Legacy Boot Event.\r
\r
  Tiano extended the CreateEvent Type enum to add a legacy boot event type.\r
  This was bad as Tiano did not own the enum. In UEFI 2.0 CreateEventEx was\r
  added and now it's possible to not voilate the UEFI specification by\r
  declaring a GUID for the legacy boot event class. This library supports\r
  the EDK/EFI 1.10 form and EDK II/UEFI 2.0 form and allows common code to\r
  work both ways.\r
\r
  @param  LegacyBootEvent   Returns the EFI event returned from gBS->CreateEvent(Ex).\r
\r
  @retval EFI_SUCCESS       Event was created.\r
  @retval Other             Event was not created.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
EfiCreateEventLegacyBoot (\r
  OUT EFI_EVENT  *LegacyBootEvent\r
  )\r
{\r
  return EfiCreateEventLegacyBootEx (\r
           EFI_TPL_CALLBACK,\r
           InternalEmptyFuntion,\r
           NULL,\r
           LegacyBootEvent\r
           );\r
}\r
\r
/**\r
  Create an EFI event in the Legacy Boot Event Group and allows\r
  the caller to specify a notification function.\r
\r
  This function abstracts the creation of the Legacy Boot Event.\r
  The Framework moved from a proprietary to UEFI 2.0 based mechanism.\r
  This library abstracts the caller from how this event is created to prevent\r
  to code form having to change with the version of the specification supported.\r
  If LegacyBootEvent is NULL, then ASSERT().\r
\r
  @param  NotifyTpl         The task priority level of the event.\r
  @param  NotifyFunction    The notification function to call when the event is signaled.\r
  @param  NotifyContext     The content to pass to NotifyFunction when the event is signaled.\r
  @param  LegacyBootEvent   Returns the EFI event returned from gBS->CreateEvent(Ex).\r
\r
  @retval EFI_SUCCESS       Event was created.\r
  @retval Other             Event was not created.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
EfiCreateEventLegacyBootEx (\r
  IN  EFI_TPL           NotifyTpl,\r
  IN  EFI_EVENT_NOTIFY  NotifyFunction,  OPTIONAL\r
  IN  VOID              *NotifyContext,  OPTIONAL\r
  OUT EFI_EVENT         *LegacyBootEvent\r
  )\r
{\r
  EFI_STATUS    Status;\r
\r
  ASSERT (LegacyBootEvent != NULL);\r
\r
  if (gST->Hdr.Revision < 0x00020000) {\r
    //\r
    // prior to UEFI 2.0 use Tiano extension to EFI\r
    //\r
    Status = gBS->CreateEvent (\r
                    EFI_EVENT_SIGNAL_LEGACY_BOOT | EFI_EVENT_NOTIFY_SIGNAL_ALL,\r
                    NotifyTpl,\r
                    NotifyFunction,\r
                    NotifyContext,\r
                    LegacyBootEvent\r
                    );\r
  } else {\r
    //\r
    // For UEFI 2.0 and the future use an Event Group\r
    //\r
    Status = gBS->CreateEventEx (\r
                    EVENT_NOTIFY_SIGNAL,\r
                    NotifyTpl,\r
                    NotifyFunction,\r
                    NotifyContext,\r
                    &gEfiEventLegacyBootGuid,\r
                    LegacyBootEvent\r
                    );\r
  }\r
\r
  return Status;\r
}\r
\r
/**\r
  Create a Read to Boot Event.\r
\r
  Tiano extended the CreateEvent Type enum to add a ready to boot event type.\r
  This was bad as Tiano did not own the enum. In UEFI 2.0 CreateEventEx was\r
  added and now it's possible to not voilate the UEFI specification and use\r
  the ready to boot event class defined in UEFI 2.0. This library supports\r
  the EDK/EFI 1.10 form and EDK II/UEFI 2.0 form and allows common code to\r
  work both ways.\r
\r
  @param  LegacyBootEvent   Returns the EFI event returned from gBS->CreateEvent(Ex).\r
\r
  @retval EFI_SUCCESS       Event was created.\r
  @retval Other             Event was not created.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
EfiCreateEventReadyToBoot (\r
  OUT EFI_EVENT  *ReadyToBootEvent\r
  )\r
{\r
  return EfiCreateEventReadyToBootEx (\r
           EFI_TPL_CALLBACK,\r
           InternalEmptyFuntion,\r
           NULL,\r
           ReadyToBootEvent\r
           );\r
}\r
\r
/**\r
  Create an EFI event in the Ready To Boot Event Group and allows\r
  the caller to specify a notification function.\r
\r
  This function abstracts the creation of the Ready to Boot Event.\r
  The Framework moved from a proprietary to UEFI 2.0 based mechanism.\r
  This library abstracts the caller from how this event is created to prevent\r
  to code form having to change with the version of the specification supported.\r
  If ReadyToBootEvent is NULL, then ASSERT().\r
\r
  @param  NotifyTpl         The task priority level of the event.\r
  @param  NotifyFunction    The notification function to call when the event is signaled.\r
  @param  NotifyContext     The content to pass to NotifyFunction when the event is signaled.\r
  @param  LegacyBootEvent   Returns the EFI event returned from gBS->CreateEvent(Ex).\r
\r
  @retval EFI_SUCCESS       Event was created.\r
  @retval Other             Event was not created.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
EfiCreateEventReadyToBootEx (\r
  IN  EFI_TPL           NotifyTpl,\r
  IN  EFI_EVENT_NOTIFY  NotifyFunction,  OPTIONAL\r
  IN  VOID              *NotifyContext,  OPTIONAL\r
  OUT EFI_EVENT         *ReadyToBootEvent\r
  )\r
{\r
  EFI_STATUS    Status;\r
\r
  ASSERT (ReadyToBootEvent != NULL);\r
\r
  if (gST->Hdr.Revision < 0x00020000) {\r
    //\r
    // prior to UEFI 2.0 use Tiano extension to EFI\r
    //\r
    Status = gBS->CreateEvent (\r
                    EFI_EVENT_SIGNAL_READY_TO_BOOT | EFI_EVENT_NOTIFY_SIGNAL_ALL,\r
                    NotifyTpl,\r
                    NotifyFunction,\r
                    NotifyContext,\r
                    ReadyToBootEvent\r
                    );\r
  } else {\r
    //\r
    // For UEFI 2.0 and the future use an Event Group\r
    //\r
    Status = gBS->CreateEventEx (\r
                    EVENT_NOTIFY_SIGNAL,\r
                    NotifyTpl,\r
                    NotifyFunction,\r
                    NotifyContext,\r
                    &gEfiEventReadyToBootGuid,\r
                    ReadyToBootEvent\r
                    );\r
  }\r
\r
  return Status;\r
}\r
\r
\r
/**\r
  Signal a Ready to Boot Event.\r
\r
  Create a Ready to Boot Event. Signal it and close it. This causes other\r
  events of the same event group to be signaled in other modules.\r
\r
**/\r
VOID\r
EFIAPI\r
EfiSignalEventReadyToBoot (\r
  VOID\r
  )\r
{\r
  EFI_STATUS    Status;\r
  EFI_EVENT     ReadyToBootEvent;\r
\r
  Status = EfiCreateEventReadyToBoot (&ReadyToBootEvent);\r
  if (!EFI_ERROR (Status)) {\r
    gBS->SignalEvent (ReadyToBootEvent);\r
    gBS->CloseEvent (ReadyToBootEvent);\r
  }\r
}\r
\r
/**\r
  Signal a Legacy Boot Event.\r
\r
  Create a legacy Boot Event. Signal it and close it. This causes other\r
  events of the same event group to be signaled in other modules.\r
\r
**/\r
VOID\r
EFIAPI\r
EfiSignalEventLegacyBoot (\r
  VOID\r
  )\r
{\r
  EFI_STATUS    Status;\r
  EFI_EVENT     LegacyBootEvent;\r
\r
  Status = EfiCreateEventLegacyBoot (&LegacyBootEvent);\r
  if (!EFI_ERROR (Status)) {\r
    gBS->SignalEvent (LegacyBootEvent);\r
    gBS->CloseEvent (LegacyBootEvent);\r
  }\r
}\r
\r
\r
/**\r
  Check to see if the Firmware Volume (FV) Media Device Path is valid\r
\r
  Tiano extended the EFI 1.10 device path nodes. Tiano does not own this enum\r
  so as we move to UEFI 2.0 support we must use a mechanism that conforms with\r
  the UEFI 2.0 specification to define the FV device path. An UEFI GUIDed\r
  device path is defined for Tiano extensions of device path. If the code\r
  is compiled to conform with the UEFI 2.0 specification use the new device path\r
  else use the old form for backwards compatability. The return value to this\r
  function points to a location in FvDevicePathNode and it does not allocate\r
  new memory for the GUID pointer that is returned.\r
\r
  @param  FvDevicePathNode  Pointer to FV device path to check.\r
\r
  @retval NULL              FvDevicePathNode is not valid.\r
  @retval Other             FvDevicePathNode is valid and pointer to NameGuid was returned.\r
\r
**/\r
EFI_GUID *\r
EFIAPI\r
EfiGetNameGuidFromFwVolDevicePathNode (\r
  IN CONST MEDIA_FW_VOL_FILEPATH_DEVICE_PATH  *FvDevicePathNode\r
  )\r
{\r
  ASSERT (FvDevicePathNode != NULL);\r
\r
  //\r
  // Use the new Device path that does not conflict with the UEFI\r
  //\r
  if (FvDevicePathNode->Tiano.Header.Type == MEDIA_DEVICE_PATH ||\r
      FvDevicePathNode->Tiano.Header.SubType == MEDIA_VENDOR_DP) {\r
    if (CompareGuid (&gEfiFrameworkDevicePathGuid, &FvDevicePathNode->Tiano.TianoSpecificDevicePath)) {\r
      if (FvDevicePathNode->Tiano.Type == TIANO_MEDIA_FW_VOL_FILEPATH_DEVICE_PATH_TYPE) {\r
        return (EFI_GUID *) &FvDevicePathNode->NameGuid;\r
      }\r
    }\r
  }\r
\r
  return NULL;\r
}\r
\r
\r
/**\r
  Initialize a Firmware Volume (FV) Media Device Path node.\r
\r
  Tiano extended the EFI 1.10 device path nodes. Tiano does not own this enum\r
  so as we move to UEFI 2.0 support we must use a mechanism that conforms with\r
  the UEFI 2.0 specification to define the FV device path. An UEFI GUIDed\r
  device path is defined for Tiano extensions of device path. If the code\r
  is compiled to conform with the UEFI 2.0 specification use the new device path\r
  else use the old form for backwards compatability.\r
\r
  @param  FvDevicePathNode  Pointer to a FV device path node to initialize\r
  @param  NameGuid          FV file name to use in FvDevicePathNode\r
\r
**/\r
VOID\r
EFIAPI\r
EfiInitializeFwVolDevicepathNode (\r
  IN OUT MEDIA_FW_VOL_FILEPATH_DEVICE_PATH  *FvDevicePathNode,\r
  IN CONST EFI_GUID                         *NameGuid\r
  )\r
{\r
  ASSERT (FvDevicePathNode  != NULL);\r
  ASSERT (NameGuid          != NULL);\r
\r
  //\r
  // Use the new Device path that does not conflict with the UEFI\r
  //\r
  FvDevicePathNode->Tiano.Header.Type     = MEDIA_DEVICE_PATH;\r
  FvDevicePathNode->Tiano.Header.SubType  = MEDIA_VENDOR_DP;\r
  SetDevicePathNodeLength (&FvDevicePathNode->Tiano.Header, sizeof (MEDIA_FW_VOL_FILEPATH_DEVICE_PATH));\r
\r
  //\r
  // Add the GUID for generic Tiano device paths\r
  //\r
  CopyGuid (&FvDevicePathNode->Tiano.TianoSpecificDevicePath, &gEfiFrameworkDevicePathGuid);\r
\r
  //\r
  // Add in the FW Vol File Path Tiano defined information\r
  //\r
  FvDevicePathNode->Tiano.Type = TIANO_MEDIA_FW_VOL_FILEPATH_DEVICE_PATH_TYPE;\r
\r
  CopyGuid (&FvDevicePathNode->NameGuid, NameGuid);\r
}\r
\r
Commit	Line	Data
	1	/** @file\r
	2	Library functions that abstract areas of conflict between Tiano an UEFI 2.0.\r
	3	\r
	4	Help Port Framework/Tinao code that has conflicts with UEFI 2.0 by hiding the\r
	5	oldconflicts with library functions and supporting implementations of the old\r
	6	(EDK/EFI 1.10) and new (EDK II/UEFI 2.0) way. This module is a DXE driver as\r
	7	it contains DXE enum extensions for EFI event services.\r
	8	\r
	9	Copyright (c) 2006 - 2007, Intel Corporation<BR>\r
	10	All rights reserved. This program and the accompanying materials\r
	11	are licensed and made available under the terms and conditions of the BSD License\r
	12	which accompanies this distribution. The full text of the license may be found at\r
	13	http://opensource.org/licenses/bsd-license.php\r
	14	\r
	15	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	16	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	17	\r
	18	**/\r
	19	\r
	20	\r
	21	/**\r
	22	An empty function to pass error checking of CreateEventEx ().\r
	23	\r
	24	This empty function ensures that EFI_EVENT_NOTIFY_SIGNAL_ALL is error\r
	25	checked correctly since it is now mapped into CreateEventEx() in UEFI 2.0.\r
	26	\r
	27	**/\r
	28	STATIC\r
	29	VOID\r
	30	EFIAPI\r
	31	InternalEmptyFuntion (\r
	32	IN EFI_EVENT Event,\r
	33	IN VOID *Context\r
	34	)\r
	35	{\r
	36	return;\r
	37	}\r
	38	\r
	39	/**\r
	40	Create a Legacy Boot Event.\r
	41	\r
	42	Tiano extended the CreateEvent Type enum to add a legacy boot event type.\r
	43	This was bad as Tiano did not own the enum. In UEFI 2.0 CreateEventEx was\r
	44	added and now it's possible to not voilate the UEFI specification by\r
	45	declaring a GUID for the legacy boot event class. This library supports\r
	46	the EDK/EFI 1.10 form and EDK II/UEFI 2.0 form and allows common code to\r
	47	work both ways.\r
	48	\r
	49	@param LegacyBootEvent Returns the EFI event returned from gBS->CreateEvent(Ex).\r
	50	\r
	51	@retval EFI_SUCCESS Event was created.\r
	52	@retval Other Event was not created.\r
	53	\r
	54	**/\r
	55	EFI_STATUS\r
	56	EFIAPI\r
	57	EfiCreateEventLegacyBoot (\r
	58	OUT EFI_EVENT *LegacyBootEvent\r
	59	)\r
	60	{\r
	61	return EfiCreateEventLegacyBootEx (\r
	62	EFI_TPL_CALLBACK,\r
	63	InternalEmptyFuntion,\r
	64	NULL,\r
	65	LegacyBootEvent\r
	66	);\r
	67	}\r
	68	\r
	69	/**\r
	70	Create an EFI event in the Legacy Boot Event Group and allows\r
	71	the caller to specify a notification function.\r
	72	\r
	73	This function abstracts the creation of the Legacy Boot Event.\r
	74	The Framework moved from a proprietary to UEFI 2.0 based mechanism.\r
	75	This library abstracts the caller from how this event is created to prevent\r
	76	to code form having to change with the version of the specification supported.\r
	77	If LegacyBootEvent is NULL, then ASSERT().\r
	78	\r
	79	@param NotifyTpl The task priority level of the event.\r
	80	@param NotifyFunction The notification function to call when the event is signaled.\r
	81	@param NotifyContext The content to pass to NotifyFunction when the event is signaled.\r
	82	@param LegacyBootEvent Returns the EFI event returned from gBS->CreateEvent(Ex).\r
	83	\r
	84	@retval EFI_SUCCESS Event was created.\r
	85	@retval Other Event was not created.\r
	86	\r
	87	**/\r
	88	EFI_STATUS\r
	89	EFIAPI\r
	90	EfiCreateEventLegacyBootEx (\r
	91	IN EFI_TPL NotifyTpl,\r
	92	IN EFI_EVENT_NOTIFY NotifyFunction, OPTIONAL\r
	93	IN VOID *NotifyContext, OPTIONAL\r
	94	OUT EFI_EVENT *LegacyBootEvent\r
	95	)\r
	96	{\r
	97	EFI_STATUS Status;\r
	98	\r
	99	ASSERT (LegacyBootEvent != NULL);\r
	100	\r
	101	if (gST->Hdr.Revision < 0x00020000) {\r
	102	//\r
	103	// prior to UEFI 2.0 use Tiano extension to EFI\r
	104	//\r
	105	Status = gBS->CreateEvent (\r
	106	EFI_EVENT_SIGNAL_LEGACY_BOOT \| EFI_EVENT_NOTIFY_SIGNAL_ALL,\r
	107	NotifyTpl,\r
	108	NotifyFunction,\r
	109	NotifyContext,\r
	110	LegacyBootEvent\r
	111	);\r
	112	} else {\r
	113	//\r
	114	// For UEFI 2.0 and the future use an Event Group\r
	115	//\r
	116	Status = gBS->CreateEventEx (\r
	117	EVENT_NOTIFY_SIGNAL,\r
	118	NotifyTpl,\r
	119	NotifyFunction,\r
	120	NotifyContext,\r
	121	&gEfiEventLegacyBootGuid,\r
	122	LegacyBootEvent\r
	123	);\r
	124	}\r
	125	\r
	126	return Status;\r
	127	}\r
	128	\r
	129	/**\r
	130	Create a Read to Boot Event.\r
	131	\r
	132	Tiano extended the CreateEvent Type enum to add a ready to boot event type.\r
	133	This was bad as Tiano did not own the enum. In UEFI 2.0 CreateEventEx was\r
	134	added and now it's possible to not voilate the UEFI specification and use\r
	135	the ready to boot event class defined in UEFI 2.0. This library supports\r
	136	the EDK/EFI 1.10 form and EDK II/UEFI 2.0 form and allows common code to\r
	137	work both ways.\r
	138	\r
	139	@param LegacyBootEvent Returns the EFI event returned from gBS->CreateEvent(Ex).\r
	140	\r
	141	@retval EFI_SUCCESS Event was created.\r
	142	@retval Other Event was not created.\r
	143	\r
	144	**/\r
	145	EFI_STATUS\r
	146	EFIAPI\r
	147	EfiCreateEventReadyToBoot (\r
	148	OUT EFI_EVENT *ReadyToBootEvent\r
	149	)\r
	150	{\r
	151	return EfiCreateEventReadyToBootEx (\r
	152	EFI_TPL_CALLBACK,\r
	153	InternalEmptyFuntion,\r
	154	NULL,\r
	155	ReadyToBootEvent\r
	156	);\r
	157	}\r
	158	\r
	159	/**\r
	160	Create an EFI event in the Ready To Boot Event Group and allows\r
	161	the caller to specify a notification function.\r
	162	\r
	163	This function abstracts the creation of the Ready to Boot Event.\r
	164	The Framework moved from a proprietary to UEFI 2.0 based mechanism.\r
	165	This library abstracts the caller from how this event is created to prevent\r
	166	to code form having to change with the version of the specification supported.\r
	167	If ReadyToBootEvent is NULL, then ASSERT().\r
	168	\r
	169	@param NotifyTpl The task priority level of the event.\r
	170	@param NotifyFunction The notification function to call when the event is signaled.\r
	171	@param NotifyContext The content to pass to NotifyFunction when the event is signaled.\r
	172	@param LegacyBootEvent Returns the EFI event returned from gBS->CreateEvent(Ex).\r
	173	\r
	174	@retval EFI_SUCCESS Event was created.\r
	175	@retval Other Event was not created.\r
	176	\r
	177	**/\r
	178	EFI_STATUS\r
	179	EFIAPI\r
	180	EfiCreateEventReadyToBootEx (\r
	181	IN EFI_TPL NotifyTpl,\r
	182	IN EFI_EVENT_NOTIFY NotifyFunction, OPTIONAL\r
	183	IN VOID *NotifyContext, OPTIONAL\r
	184	OUT EFI_EVENT *ReadyToBootEvent\r
	185	)\r
	186	{\r
	187	EFI_STATUS Status;\r
	188	\r
	189	ASSERT (ReadyToBootEvent != NULL);\r
	190	\r
	191	if (gST->Hdr.Revision < 0x00020000) {\r
	192	//\r
	193	// prior to UEFI 2.0 use Tiano extension to EFI\r
	194	//\r
	195	Status = gBS->CreateEvent (\r
	196	EFI_EVENT_SIGNAL_READY_TO_BOOT \| EFI_EVENT_NOTIFY_SIGNAL_ALL,\r
	197	NotifyTpl,\r
	198	NotifyFunction,\r
	199	NotifyContext,\r
	200	ReadyToBootEvent\r
	201	);\r
	202	} else {\r
	203	//\r
	204	// For UEFI 2.0 and the future use an Event Group\r
	205	//\r
	206	Status = gBS->CreateEventEx (\r
	207	EVENT_NOTIFY_SIGNAL,\r
	208	NotifyTpl,\r
	209	NotifyFunction,\r
	210	NotifyContext,\r
	211	&gEfiEventReadyToBootGuid,\r
	212	ReadyToBootEvent\r
	213	);\r
	214	}\r
	215	\r
	216	return Status;\r
	217	}\r
	218	\r
	219	\r
	220	/**\r
	221	Signal a Ready to Boot Event.\r
	222	\r
	223	Create a Ready to Boot Event. Signal it and close it. This causes other\r
	224	events of the same event group to be signaled in other modules.\r
	225	\r
	226	**/\r
	227	VOID\r
	228	EFIAPI\r
	229	EfiSignalEventReadyToBoot (\r
	230	VOID\r
	231	)\r
	232	{\r
	233	EFI_STATUS Status;\r
	234	EFI_EVENT ReadyToBootEvent;\r
	235	\r
	236	Status = EfiCreateEventReadyToBoot (&ReadyToBootEvent);\r
	237	if (!EFI_ERROR (Status)) {\r
	238	gBS->SignalEvent (ReadyToBootEvent);\r
	239	gBS->CloseEvent (ReadyToBootEvent);\r
	240	}\r
	241	}\r
	242	\r
	243	/**\r
	244	Signal a Legacy Boot Event.\r
	245	\r
	246	Create a legacy Boot Event. Signal it and close it. This causes other\r
	247	events of the same event group to be signaled in other modules.\r
	248	\r
	249	**/\r
	250	VOID\r
	251	EFIAPI\r
	252	EfiSignalEventLegacyBoot (\r
	253	VOID\r
	254	)\r
	255	{\r
	256	EFI_STATUS Status;\r
	257	EFI_EVENT LegacyBootEvent;\r
	258	\r
	259	Status = EfiCreateEventLegacyBoot (&LegacyBootEvent);\r
	260	if (!EFI_ERROR (Status)) {\r
	261	gBS->SignalEvent (LegacyBootEvent);\r
	262	gBS->CloseEvent (LegacyBootEvent);\r
	263	}\r
	264	}\r
	265	\r
	266	\r
	267	/**\r
	268	Check to see if the Firmware Volume (FV) Media Device Path is valid\r
	269	\r
	270	Tiano extended the EFI 1.10 device path nodes. Tiano does not own this enum\r
	271	so as we move to UEFI 2.0 support we must use a mechanism that conforms with\r
	272	the UEFI 2.0 specification to define the FV device path. An UEFI GUIDed\r
	273	device path is defined for Tiano extensions of device path. If the code\r
	274	is compiled to conform with the UEFI 2.0 specification use the new device path\r
	275	else use the old form for backwards compatability. The return value to this\r
	276	function points to a location in FvDevicePathNode and it does not allocate\r
	277	new memory for the GUID pointer that is returned.\r
	278	\r
	279	@param FvDevicePathNode Pointer to FV device path to check.\r
	280	\r
	281	@retval NULL FvDevicePathNode is not valid.\r
	282	@retval Other FvDevicePathNode is valid and pointer to NameGuid was returned.\r
	283	\r
	284	**/\r
	285	EFI_GUID *\r
	286	EFIAPI\r
	287	EfiGetNameGuidFromFwVolDevicePathNode (\r
	288	IN CONST MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *FvDevicePathNode\r
	289	)\r
	290	{\r
	291	ASSERT (FvDevicePathNode != NULL);\r
	292	\r
	293	//\r
	294	// Use the new Device path that does not conflict with the UEFI\r
	295	//\r
	296	if (FvDevicePathNode->Tiano.Header.Type == MEDIA_DEVICE_PATH \|\|\r
	297	FvDevicePathNode->Tiano.Header.SubType == MEDIA_VENDOR_DP) {\r
	298	if (CompareGuid (&gEfiFrameworkDevicePathGuid, &FvDevicePathNode->Tiano.TianoSpecificDevicePath)) {\r
	299	if (FvDevicePathNode->Tiano.Type == TIANO_MEDIA_FW_VOL_FILEPATH_DEVICE_PATH_TYPE) {\r
	300	return (EFI_GUID *) &FvDevicePathNode->NameGuid;\r
	301	}\r
	302	}\r
	303	}\r
	304	\r
	305	return NULL;\r
	306	}\r
	307	\r
	308	\r
	309	/**\r
	310	Initialize a Firmware Volume (FV) Media Device Path node.\r
	311	\r
	312	Tiano extended the EFI 1.10 device path nodes. Tiano does not own this enum\r
	313	so as we move to UEFI 2.0 support we must use a mechanism that conforms with\r
	314	the UEFI 2.0 specification to define the FV device path. An UEFI GUIDed\r
	315	device path is defined for Tiano extensions of device path. If the code\r
	316	is compiled to conform with the UEFI 2.0 specification use the new device path\r
	317	else use the old form for backwards compatability.\r
	318	\r
	319	@param FvDevicePathNode Pointer to a FV device path node to initialize\r
	320	@param NameGuid FV file name to use in FvDevicePathNode\r
	321	\r
	322	**/\r
	323	VOID\r
	324	EFIAPI\r
	325	EfiInitializeFwVolDevicepathNode (\r
	326	IN OUT MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *FvDevicePathNode,\r
	327	IN CONST EFI_GUID *NameGuid\r
	328	)\r
	329	{\r
	330	ASSERT (FvDevicePathNode != NULL);\r
	331	ASSERT (NameGuid != NULL);\r
	332	\r
	333	//\r
	334	// Use the new Device path that does not conflict with the UEFI\r
	335	//\r
	336	FvDevicePathNode->Tiano.Header.Type = MEDIA_DEVICE_PATH;\r
	337	FvDevicePathNode->Tiano.Header.SubType = MEDIA_VENDOR_DP;\r
	338	SetDevicePathNodeLength (&FvDevicePathNode->Tiano.Header, sizeof (MEDIA_FW_VOL_FILEPATH_DEVICE_PATH));\r
	339	\r
	340	//\r
	341	// Add the GUID for generic Tiano device paths\r
	342	//\r
	343	CopyGuid (&FvDevicePathNode->Tiano.TianoSpecificDevicePath, &gEfiFrameworkDevicePathGuid);\r
	344	\r
	345	//\r
	346	// Add in the FW Vol File Path Tiano defined information\r
	347	//\r
	348	FvDevicePathNode->Tiano.Type = TIANO_MEDIA_FW_VOL_FILEPATH_DEVICE_PATH_TYPE;\r
	349	\r
	350	CopyGuid (&FvDevicePathNode->NameGuid, NameGuid);\r
	351	}\r
	352	\r