[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, 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 enusres that EFI_EVENT_NOTIFY_SIGNAL_ALL is error
  checked correctly since it is now mapped into CreateEventEx() in UEFI 2.0.
  \r
**/\r
VOID
EFIAPI
InternalEmptyFuntion (
  IN EFI_EVENT                Event,
  IN VOID                     *Context
  )
{
  return;
}\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 ((EDK_RELEASE_VERSION != 0) && (EFI_SPECIFICATION_VERSION < 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
#elif (EFI_SPECIFICATION_VERSION >= 0x00020000)\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
#else\r
  //\r
  // For EFI 1.10 with no Tiano extensions return unsupported\r
  //\r
  Status = EFI_UNSUPORTED;\r
#endif\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 ((EDK_RELEASE_VERSION != 0) && (EFI_SPECIFICATION_VERSION < 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
#elif (EFI_SPECIFICATION_VERSION >= 0x00020000)\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
#else\r
  //\r
  // For EFI 1.10 with no Tiano extensions return unsupported\r
  //\r
  Status = EFI_UNSUPORTED;\r
#endif\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
#if ((EDK_RELEASE_VERSION != 0) && (EFI_SPECIFICATION_VERSION < 0x00020000))\r
  //\r
  // Use old Device Path that conflicts with UEFI\r
  //\r
  if (DevicePathType (&FvDevicePathNode->Header) == MEDIA_DEVICE_PATH ||\r
      DevicePathSubType (&FvDevicePathNode->Header) == MEDIA_FV_FILEPATH_DP) {\r
    return (EFI_GUID *) &FvDevicePathNode->NameGuid;\r
  }\r
\r
#elif ((EDK_RELEASE_VERSION != 0) && (EFI_SPECIFICATION_VERSION >= 0x00020000))\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
#endif  \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
#if (EFI_SPECIFICATION_VERSION < 0x00020000) \r
  //\r
  // Use old Device Path that conflicts with UEFI\r
  //\r
  FvDevicePathNode->Header.Type     = MEDIA_DEVICE_PATH;\r
  FvDevicePathNode->Header.SubType  = MEDIA_FV_FILEPATH_DP;\r
  SetDevicePathNodeLength (&FvDevicePathNode->Header, sizeof (MEDIA_FW_VOL_FILEPATH_DEVICE_PATH));\r
  \r
#else\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
#endif\r
\r
  CopyGuid (&FvDevicePathNode->NameGuid, NameGuid);\r
\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, 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 enusres that EFI_EVENT_NOTIFY_SIGNAL_ALL is error
	25	checked correctly since it is now mapped into CreateEventEx() in UEFI 2.0.
	26	\r
	27	**/\r
	28	VOID
	29	EFIAPI
	30	InternalEmptyFuntion (
	31	IN EFI_EVENT Event,
	32	IN VOID *Context
	33	)
	34	{
	35	return;
	36	}\r
	37	\r
	38	/**\r
	39	Create a Legacy Boot Event. \r
	40	\r
	41	Tiano extended the CreateEvent Type enum to add a legacy boot event type. \r
	42	This was bad as Tiano did not own the enum. In UEFI 2.0 CreateEventEx was\r
	43	added and now it's possible to not voilate the UEFI specification by \r
	44	declaring a GUID for the legacy boot event class. This library supports\r
	45	the EDK/EFI 1.10 form and EDK II/UEFI 2.0 form and allows common code to \r
	46	work both ways.\r
	47	\r
	48	@param LegacyBootEvent Returns the EFI event returned from gBS->CreateEvent(Ex).\r
	49	\r
	50	@retval EFI_SUCCESS Event was created.\r
	51	@retval Other Event was not created.\r
	52	\r
	53	**/\r
	54	EFI_STATUS\r
	55	EFIAPI\r
	56	EfiCreateEventLegacyBoot (\r
	57	OUT EFI_EVENT *LegacyBootEvent\r
	58	)\r
	59	{\r
	60	return EfiCreateEventLegacyBootEx (\r
	61	EFI_TPL_CALLBACK,\r
	62	InternalEmptyFuntion,\r
	63	NULL,\r
	64	LegacyBootEvent\r
	65	);\r
	66	}\r
	67	\r
	68	/**\r
	69	Create an EFI event in the Legacy Boot Event Group and allows\r
	70	the caller to specify a notification function. \r
	71	\r
	72	This function abstracts the creation of the Legacy Boot Event.\r
	73	The Framework moved from a proprietary to UEFI 2.0 based mechanism.\r
	74	This library abstracts the caller from how this event is created to prevent\r
	75	to code form having to change with the version of the specification supported.\r
	76	If LegacyBootEvent is NULL, then ASSERT().\r
	77	\r
	78	@param NotifyTpl The task priority level of the event.\r
	79	@param NotifyFunction The notification function to call when the event is signaled.\r
	80	@param NotifyContext The content to pass to NotifyFunction when the event is signaled.\r
	81	@param LegacyBootEvent Returns the EFI event returned from gBS->CreateEvent(Ex).\r
	82	\r
	83	@retval EFI_SUCCESS Event was created.\r
	84	@retval Other Event was not created.\r
	85	\r
	86	**/\r
	87	EFI_STATUS\r
	88	EFIAPI\r
	89	EfiCreateEventLegacyBootEx (\r
	90	IN EFI_TPL NotifyTpl,\r
	91	IN EFI_EVENT_NOTIFY NotifyFunction, OPTIONAL\r
	92	IN VOID *NotifyContext, OPTIONAL\r
	93	OUT EFI_EVENT *LegacyBootEvent\r
	94	)\r
	95	{\r
	96	EFI_STATUS Status;\r
	97	\r
	98	ASSERT (LegacyBootEvent != NULL);\r
	99	\r
	100	#if ((EDK_RELEASE_VERSION != 0) && (EFI_SPECIFICATION_VERSION < 0x00020000))\r
	101	//\r
	102	// prior to UEFI 2.0 use Tiano extension to EFI\r
	103	//\r
	104	Status = gBS->CreateEvent (\r
	105	EFI_EVENT_SIGNAL_LEGACY_BOOT \| EFI_EVENT_NOTIFY_SIGNAL_ALL,\r
	106	NotifyTpl,\r
	107	NotifyFunction,\r
	108	NotifyContext,\r
	109	LegacyBootEvent\r
	110	);\r
	111	#elif (EFI_SPECIFICATION_VERSION >= 0x00020000)\r
	112	//\r
	113	// For UEFI 2.0 and the future use an Event Group\r
	114	//\r
	115	Status = gBS->CreateEventEx (\r
	116	EVENT_NOTIFY_SIGNAL,\r
	117	NotifyTpl,\r
	118	NotifyFunction,\r
	119	NotifyContext,\r
	120	&gEfiEventLegacyBootGuid,\r
	121	LegacyBootEvent\r
	122	);\r
	123	#else\r
	124	//\r
	125	// For EFI 1.10 with no Tiano extensions return unsupported\r
	126	//\r
	127	Status = EFI_UNSUPORTED;\r
	128	#endif\r
	129	\r
	130	return Status;\r
	131	}\r
	132	\r
	133	/**\r
	134	Create a Read to Boot Event. \r
	135	\r
	136	Tiano extended the CreateEvent Type enum to add a ready to boot event type. \r
	137	This was bad as Tiano did not own the enum. In UEFI 2.0 CreateEventEx was\r
	138	added and now it's possible to not voilate the UEFI specification and use \r
	139	the ready to boot event class defined in UEFI 2.0. This library supports\r
	140	the EDK/EFI 1.10 form and EDK II/UEFI 2.0 form and allows common code to \r
	141	work both ways.\r
	142	\r
	143	@param LegacyBootEvent Returns the EFI event returned from gBS->CreateEvent(Ex).\r
	144	\r
	145	@retval EFI_SUCCESS Event was created.\r
	146	@retval Other Event was not created.\r
	147	\r
	148	**/\r
	149	EFI_STATUS\r
	150	EFIAPI\r
	151	EfiCreateEventReadyToBoot (\r
	152	OUT EFI_EVENT *ReadyToBootEvent\r
	153	)\r
	154	{\r
	155	return EfiCreateEventReadyToBootEx (\r
	156	EFI_TPL_CALLBACK,\r
	157	InternalEmptyFuntion,\r
	158	NULL,\r
	159	ReadyToBootEvent\r
	160	);\r
	161	}\r
	162	\r
	163	/**\r
	164	Create an EFI event in the Ready To Boot Event Group and allows\r
	165	the caller to specify a notification function. \r
	166	\r
	167	This function abstracts the creation of the Ready to Boot Event.\r
	168	The Framework moved from a proprietary to UEFI 2.0 based mechanism.\r
	169	This library abstracts the caller from how this event is created to prevent\r
	170	to code form having to change with the version of the specification supported.\r
	171	If ReadyToBootEvent is NULL, then ASSERT().\r
	172	\r
	173	@param NotifyTpl The task priority level of the event.\r
	174	@param NotifyFunction The notification function to call when the event is signaled.\r
	175	@param NotifyContext The content to pass to NotifyFunction when the event is signaled.\r
	176	@param LegacyBootEvent Returns the EFI event returned from gBS->CreateEvent(Ex).\r
	177	\r
	178	@retval EFI_SUCCESS Event was created.\r
	179	@retval Other Event was not created.\r
	180	\r
	181	**/\r
	182	EFI_STATUS\r
	183	EFIAPI\r
	184	EfiCreateEventReadyToBootEx (\r
	185	IN EFI_TPL NotifyTpl,\r
	186	IN EFI_EVENT_NOTIFY NotifyFunction, OPTIONAL\r
	187	IN VOID *NotifyContext, OPTIONAL\r
	188	OUT EFI_EVENT *ReadyToBootEvent\r
	189	)\r
	190	{\r
	191	EFI_STATUS Status;\r
	192	\r
	193	ASSERT (ReadyToBootEvent != NULL);\r
	194	\r
	195	#if ((EDK_RELEASE_VERSION != 0) && (EFI_SPECIFICATION_VERSION < 0x00020000))\r
	196	//\r
	197	// prior to UEFI 2.0 use Tiano extension to EFI\r
	198	//\r
	199	Status = gBS->CreateEvent (\r
	200	EFI_EVENT_SIGNAL_READY_TO_BOOT \| EFI_EVENT_NOTIFY_SIGNAL_ALL,\r
	201	NotifyTpl,\r
	202	NotifyFunction,\r
	203	NotifyContext,\r
	204	ReadyToBootEvent\r
	205	);\r
	206	#elif (EFI_SPECIFICATION_VERSION >= 0x00020000)\r
	207	//\r
	208	// For UEFI 2.0 and the future use an Event Group\r
	209	//\r
	210	Status = gBS->CreateEventEx (\r
	211	EVENT_NOTIFY_SIGNAL,\r
	212	NotifyTpl,\r
	213	NotifyFunction,\r
	214	NotifyContext,\r
	215	&gEfiEventReadyToBootGuid,\r
	216	ReadyToBootEvent\r
	217	);\r
	218	#else\r
	219	//\r
	220	// For EFI 1.10 with no Tiano extensions return unsupported\r
	221	//\r
	222	Status = EFI_UNSUPORTED;\r
	223	#endif\r
	224	\r
	225	return Status;\r
	226	}\r
	227	\r
	228	\r
	229	/**\r
	230	Signal a Ready to Boot Event. \r
	231	\r
	232	Create a Ready to Boot Event. Signal it and close it. This causes other \r
	233	events of the same event group to be signaled in other modules. \r
	234	\r
	235	**/\r
	236	VOID\r
	237	EFIAPI\r
	238	EfiSignalEventReadyToBoot (\r
	239	VOID\r
	240	)\r
	241	{\r
	242	EFI_STATUS Status;\r
	243	EFI_EVENT ReadyToBootEvent;\r
	244	\r
	245	Status = EfiCreateEventReadyToBoot (&ReadyToBootEvent);\r
	246	if (!EFI_ERROR (Status)) {\r
	247	gBS->SignalEvent (ReadyToBootEvent);\r
	248	gBS->CloseEvent (ReadyToBootEvent);\r
	249	}\r
	250	}\r
	251	\r
	252	/**\r
	253	Signal a Legacy Boot Event. \r
	254	\r
	255	Create a legacy Boot Event. Signal it and close it. This causes other \r
	256	events of the same event group to be signaled in other modules. \r
	257	\r
	258	**/\r
	259	VOID\r
	260	EFIAPI\r
	261	EfiSignalEventLegacyBoot (\r
	262	VOID\r
	263	)\r
	264	{\r
	265	EFI_STATUS Status;\r
	266	EFI_EVENT LegacyBootEvent;\r
	267	\r
	268	Status = EfiCreateEventLegacyBoot (&LegacyBootEvent);\r
	269	if (!EFI_ERROR (Status)) {\r
	270	gBS->SignalEvent (LegacyBootEvent);\r
	271	gBS->CloseEvent (LegacyBootEvent);\r
	272	}\r
	273	}\r
	274	\r
	275	\r
	276	/**\r
	277	Check to see if the Firmware Volume (FV) Media Device Path is valid \r
	278	\r
	279	Tiano extended the EFI 1.10 device path nodes. Tiano does not own this enum\r
	280	so as we move to UEFI 2.0 support we must use a mechanism that conforms with\r
	281	the UEFI 2.0 specification to define the FV device path. An UEFI GUIDed \r
	282	device path is defined for Tiano extensions of device path. If the code \r
	283	is compiled to conform with the UEFI 2.0 specification use the new device path\r
	284	else use the old form for backwards compatability. The return value to this\r
	285	function points to a location in FvDevicePathNode and it does not allocate\r
	286	new memory for the GUID pointer that is returned.\r
	287	\r
	288	@param FvDevicePathNode Pointer to FV device path to check.\r
	289	\r
	290	@retval NULL FvDevicePathNode is not valid.\r
	291	@retval Other FvDevicePathNode is valid and pointer to NameGuid was returned.\r
	292	\r
	293	**/\r
	294	EFI_GUID *\r
	295	EFIAPI\r
	296	EfiGetNameGuidFromFwVolDevicePathNode (\r
	297	IN CONST MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *FvDevicePathNode\r
	298	)\r
	299	{\r
	300	ASSERT (FvDevicePathNode != NULL);\r
	301	\r
	302	#if ((EDK_RELEASE_VERSION != 0) && (EFI_SPECIFICATION_VERSION < 0x00020000))\r
	303	//\r
	304	// Use old Device Path that conflicts with UEFI\r
	305	//\r
	306	if (DevicePathType (&FvDevicePathNode->Header) == MEDIA_DEVICE_PATH \|\|\r
	307	DevicePathSubType (&FvDevicePathNode->Header) == MEDIA_FV_FILEPATH_DP) {\r
	308	return (EFI_GUID *) &FvDevicePathNode->NameGuid;\r
	309	}\r
	310	\r
	311	#elif ((EDK_RELEASE_VERSION != 0) && (EFI_SPECIFICATION_VERSION >= 0x00020000))\r
	312	//\r
	313	// Use the new Device path that does not conflict with the UEFI\r
	314	//\r
	315	if (FvDevicePathNode->Tiano.Header.Type == MEDIA_DEVICE_PATH \|\|\r
	316	FvDevicePathNode->Tiano.Header.SubType == MEDIA_VENDOR_DP) {\r
	317	if (CompareGuid (&gEfiFrameworkDevicePathGuid, &FvDevicePathNode->Tiano.TianoSpecificDevicePath)) {\r
	318	if (FvDevicePathNode->Tiano.Type == TIANO_MEDIA_FW_VOL_FILEPATH_DEVICE_PATH_TYPE) {\r
	319	return (EFI_GUID *) &FvDevicePathNode->NameGuid;\r
	320	}\r
	321	}\r
	322	}\r
	323	#endif \r
	324	return NULL;\r
	325	}\r
	326	\r
	327	\r
	328	/**\r
	329	Initialize a Firmware Volume (FV) Media Device Path node.\r
	330	\r
	331	Tiano extended the EFI 1.10 device path nodes. Tiano does not own this enum\r
	332	so as we move to UEFI 2.0 support we must use a mechanism that conforms with\r
	333	the UEFI 2.0 specification to define the FV device path. An UEFI GUIDed \r
	334	device path is defined for Tiano extensions of device path. If the code \r
	335	is compiled to conform with the UEFI 2.0 specification use the new device path\r
	336	else use the old form for backwards compatability.\r
	337	\r
	338	@param FvDevicePathNode Pointer to a FV device path node to initialize\r
	339	@param NameGuid FV file name to use in FvDevicePathNode\r
	340	\r
	341	**/\r
	342	VOID\r
	343	EFIAPI\r
	344	EfiInitializeFwVolDevicepathNode (\r
	345	IN OUT MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *FvDevicePathNode,\r
	346	IN CONST EFI_GUID *NameGuid\r
	347	)\r
	348	{\r
	349	ASSERT (FvDevicePathNode != NULL);\r
	350	ASSERT (NameGuid != NULL);\r
	351	\r
	352	#if (EFI_SPECIFICATION_VERSION < 0x00020000) \r
	353	//\r
	354	// Use old Device Path that conflicts with UEFI\r
	355	//\r
	356	FvDevicePathNode->Header.Type = MEDIA_DEVICE_PATH;\r
	357	FvDevicePathNode->Header.SubType = MEDIA_FV_FILEPATH_DP;\r
	358	SetDevicePathNodeLength (&FvDevicePathNode->Header, sizeof (MEDIA_FW_VOL_FILEPATH_DEVICE_PATH));\r
	359	\r
	360	#else\r
	361	//\r
	362	// Use the new Device path that does not conflict with the UEFI\r
	363	//\r
	364	FvDevicePathNode->Tiano.Header.Type = MEDIA_DEVICE_PATH;\r
	365	FvDevicePathNode->Tiano.Header.SubType = MEDIA_VENDOR_DP;\r
	366	SetDevicePathNodeLength (&FvDevicePathNode->Tiano.Header, sizeof (MEDIA_FW_VOL_FILEPATH_DEVICE_PATH));\r
	367	\r
	368	//\r
	369	// Add the GUID for generic Tiano device paths\r
	370	//\r
	371	CopyGuid (&FvDevicePathNode->Tiano.TianoSpecificDevicePath, &gEfiFrameworkDevicePathGuid);\r
	372	\r
	373	//\r
	374	// Add in the FW Vol File Path Tiano defined information\r
	375	//\r
	376	FvDevicePathNode->Tiano.Type = TIANO_MEDIA_FW_VOL_FILEPATH_DEVICE_PATH_TYPE;\r
	377	\r
	378	#endif\r
	379	\r
	380	CopyGuid (&FvDevicePathNode->NameGuid, NameGuid);\r
	381	\r
	382	}\r
	383	\r