[mirror_edk2.git] / IntelFrameworkPkg / Library / FrameworkUefiLib / UefiNotTiano.c

/** @file\r
  Library functions that abstract areas of conflict between framework and UEFI 2.0.\r
\r
  Help Port Framework code that has conflicts with UEFI 2.0 by hiding the\r
  old conflicts 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. 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
\r
\r
#include "UefiLibInternal.h"\r
\r
/**\r
  An empty function to pass error checking of CreateEventEx ().\r
\r
  This empty function ensures that EVT_NOTIFY_SIGNAL_ALL is error\r
  checked correctly since it is now mapped into CreateEventEx() in UEFI 2.0.\r
 \r
  @param  Event                 Event whose notification function is being invoked.\r
  @param  Context               Pointer to the notification function's context,\r
                                which is implementation-dependent.\r
\r
**/\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
           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 | EVT_NOTIFY_SIGNAL,\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
                    EVT_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  ReadyToBootEvent   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
           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  ReadyToBootEvent  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
                    EVT_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
  // EFI Specification extension on Media Device Path. MEDIA_FW_VOL_FILEPATH_DEVICE_PATH is adopted by UEFI later and added in UEFI2.10. \r
  // In EdkCompatibility Package, we only support MEDIA_FW_VOL_FILEPATH_DEVICE_PATH that complies with\r
  // EFI 1.10 and UEFI 2.10.\r
  //\r
  if (DevicePathType (&FvDevicePathNode->Header) == MEDIA_DEVICE_PATH &&\r
      DevicePathSubType (&FvDevicePathNode->Header) == MEDIA_PIWG_FW_FILE_DP) {\r
    return (EFI_GUID *) &FvDevicePathNode->FvFileName;\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
  // EFI Specification extension on Media Device Path. MEDIA_FW_VOL_FILEPATH_DEVICE_PATH is adopted by UEFI later and added in UEFI2.10. \r
  // In EdkCompatibility Package, we only support MEDIA_FW_VOL_FILEPATH_DEVICE_PATH that complies with\r
  // EFI 1.10 and UEFI 2.10.\r
  //\r
  FvDevicePathNode->Header.Type     = MEDIA_DEVICE_PATH;\r
  FvDevicePathNode->Header.SubType  = MEDIA_PIWG_FW_FILE_DP;\r
  SetDevicePathNodeLength (&FvDevicePathNode->Header, sizeof (MEDIA_FW_VOL_FILEPATH_DEVICE_PATH));\r
  \r
  CopyGuid (&FvDevicePathNode->FvFileName, NameGuid);\r
}\r
\r
Commit	Line	Data
79964ac8	1	/** @file\r
bf428cb3	2	Library functions that abstract areas of conflict between framework and UEFI 2.0.\r
79964ac8	3	\r
bf428cb3	4	Help Port Framework code that has conflicts with UEFI 2.0 by hiding the\r
	5	old conflicts 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
79964ac8	7	it contains DXE enum extensions for EFI event services.\r
79964ac8	8	\r
2b3687db HT	9	Copyright (c) 2006 - 2007, Intel Corporation. All rights reserved.<BR>\r
2b3687db HT	10	This program and the accompanying materials\r
79964ac8	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
bf428cb3	20	\r
	21	\r
	22	#include "UefiLibInternal.h"\r
79964ac8	23	\r
	24	/**\r
	25	An empty function to pass error checking of CreateEventEx ().\r
	26	\r
bf428cb3	27	This empty function ensures that EVT_NOTIFY_SIGNAL_ALL is error\r
79964ac8	28	checked correctly since it is now mapped into CreateEventEx() in UEFI 2.0.\r
bf428cb3	29	\r
	30	@param Event Event whose notification function is being invoked.\r
	31	@param Context Pointer to the notification function's context,\r
	32	which is implementation-dependent.\r
79964ac8	33	\r
79964ac8	34	**/\r
79964ac8	35	VOID\r
	36	EFIAPI\r
	37	InternalEmptyFuntion (\r
	38	IN EFI_EVENT Event,\r
	39	IN VOID *Context\r
	40	)\r
	41	{\r
	42	return;\r
	43	}\r
	44	\r
	45	/**\r
	46	Create a Legacy Boot Event.\r
	47	\r
	48	Tiano extended the CreateEvent Type enum to add a legacy boot event type.\r
	49	This was bad as Tiano did not own the enum. In UEFI 2.0 CreateEventEx was\r
	50	added and now it's possible to not voilate the UEFI specification by\r
	51	declaring a GUID for the legacy boot event class. This library supports\r
	52	the EDK/EFI 1.10 form and EDK II/UEFI 2.0 form and allows common code to\r
	53	work both ways.\r
	54	\r
	55	@param LegacyBootEvent Returns the EFI event returned from gBS->CreateEvent(Ex).\r
	56	\r
	57	@retval EFI_SUCCESS Event was created.\r
	58	@retval Other Event was not created.\r
	59	\r
	60	**/\r
	61	EFI_STATUS\r
	62	EFIAPI\r
	63	EfiCreateEventLegacyBoot (\r
	64	OUT EFI_EVENT *LegacyBootEvent\r
	65	)\r
	66	{\r
	67	return EfiCreateEventLegacyBootEx (\r
93b0fbc8	68	TPL_CALLBACK,\r
79964ac8	69	InternalEmptyFuntion,\r
	70	NULL,\r
	71	LegacyBootEvent\r
	72	);\r
	73	}\r
	74	\r
	75	/**\r
	76	Create an EFI event in the Legacy Boot Event Group and allows\r
	77	the caller to specify a notification function.\r
	78	\r
	79	This function abstracts the creation of the Legacy Boot Event.\r
	80	The Framework moved from a proprietary to UEFI 2.0 based mechanism.\r
	81	This library abstracts the caller from how this event is created to prevent\r
	82	to code form having to change with the version of the specification supported.\r
	83	If LegacyBootEvent is NULL, then ASSERT().\r
	84	\r
	85	@param NotifyTpl The task priority level of the event.\r
	86	@param NotifyFunction The notification function to call when the event is signaled.\r
	87	@param NotifyContext The content to pass to NotifyFunction when the event is signaled.\r
	88	@param LegacyBootEvent Returns the EFI event returned from gBS->CreateEvent(Ex).\r
	89	\r
	90	@retval EFI_SUCCESS Event was created.\r
	91	@retval Other Event was not created.\r
	92	\r
	93	**/\r
	94	EFI_STATUS\r
	95	EFIAPI\r
	96	EfiCreateEventLegacyBootEx (\r
	97	IN EFI_TPL NotifyTpl,\r
	98	IN EFI_EVENT_NOTIFY NotifyFunction, OPTIONAL\r
	99	IN VOID *NotifyContext, OPTIONAL\r
	100	OUT EFI_EVENT *LegacyBootEvent\r
	101	)\r
	102	{\r
	103	EFI_STATUS Status;\r
	104	\r
	105	ASSERT (LegacyBootEvent != NULL);\r
	106	\r
	107	if (gST->Hdr.Revision < 0x00020000) {\r
	108	//\r
	109	// prior to UEFI 2.0 use Tiano extension to EFI\r
	110	//\r
	111	Status = gBS->CreateEvent (\r
39e0ae3b	112	EFI_EVENT_SIGNAL_LEGACY_BOOT \| EVT_NOTIFY_SIGNAL,\r
79964ac8	113	NotifyTpl,\r
	114	NotifyFunction,\r
	115	NotifyContext,\r
	116	LegacyBootEvent\r
	117	);\r
	118	} else {\r
	119	//\r
	120	// For UEFI 2.0 and the future use an Event Group\r
	121	//\r
	122	Status = gBS->CreateEventEx (\r
93b0fbc8	123	EVT_NOTIFY_SIGNAL,\r
79964ac8	124	NotifyTpl,\r
	125	NotifyFunction,\r
	126	NotifyContext,\r
	127	&gEfiEventLegacyBootGuid,\r
	128	LegacyBootEvent\r
	129	);\r
	130	}\r
	131	\r
	132	return Status;\r
	133	}\r
	134	\r
	135	/**\r
	136	Create a Read to Boot Event.\r
	137	\r
	138	Tiano extended the CreateEvent Type enum to add a ready to boot event type.\r
	139	This was bad as Tiano did not own the enum. In UEFI 2.0 CreateEventEx was\r
	140	added and now it's possible to not voilate the UEFI specification and use\r
	141	the ready to boot event class defined in UEFI 2.0. This library supports\r
	142	the EDK/EFI 1.10 form and EDK II/UEFI 2.0 form and allows common code to\r
	143	work both ways.\r
	144	\r
7459094d	145	@param ReadyToBootEvent Returns the EFI event returned from gBS->CreateEvent(Ex).\r
79964ac8	146	\r
	147	@retval EFI_SUCCESS Event was created.\r
	148	@retval Other Event was not created.\r
	149	\r
	150	**/\r
	151	EFI_STATUS\r
	152	EFIAPI\r
	153	EfiCreateEventReadyToBoot (\r
	154	OUT EFI_EVENT *ReadyToBootEvent\r
	155	)\r
	156	{\r
	157	return EfiCreateEventReadyToBootEx (\r
93b0fbc8	158	TPL_CALLBACK,\r
79964ac8	159	InternalEmptyFuntion,\r
	160	NULL,\r
	161	ReadyToBootEvent\r
	162	);\r
	163	}\r
	164	\r
	165	/**\r
	166	Create an EFI event in the Ready To Boot Event Group and allows\r
	167	the caller to specify a notification function.\r
	168	\r
	169	This function abstracts the creation of the Ready to Boot Event.\r
	170	The Framework moved from a proprietary to UEFI 2.0 based mechanism.\r
	171	This library abstracts the caller from how this event is created to prevent\r
	172	to code form having to change with the version of the specification supported.\r
	173	If ReadyToBootEvent is NULL, then ASSERT().\r
	174	\r
	175	@param NotifyTpl The task priority level of the event.\r
	176	@param NotifyFunction The notification function to call when the event is signaled.\r
	177	@param NotifyContext The content to pass to NotifyFunction when the event is signaled.\r
7459094d	178	@param ReadyToBootEvent Returns the EFI event returned from gBS->CreateEvent(Ex).\r
79964ac8	179	\r
	180	@retval EFI_SUCCESS Event was created.\r
	181	@retval Other Event was not created.\r
	182	\r
	183	**/\r
	184	EFI_STATUS\r
	185	EFIAPI\r
	186	EfiCreateEventReadyToBootEx (\r
	187	IN EFI_TPL NotifyTpl,\r
	188	IN EFI_EVENT_NOTIFY NotifyFunction, OPTIONAL\r
	189	IN VOID *NotifyContext, OPTIONAL\r
	190	OUT EFI_EVENT *ReadyToBootEvent\r
	191	)\r
	192	{\r
	193	EFI_STATUS Status;\r
	194	\r
	195	ASSERT (ReadyToBootEvent != NULL);\r
	196	\r
	197	if (gST->Hdr.Revision < 0x00020000) {\r
	198	//\r
	199	// prior to UEFI 2.0 use Tiano extension to EFI\r
	200	//\r
	201	Status = gBS->CreateEvent (\r
39e0ae3b	202	EFI_EVENT_SIGNAL_READY_TO_BOOT \| EFI_EVENT_NOTIFY_SIGNAL_ALL,\r
79964ac8	203	NotifyTpl,\r
	204	NotifyFunction,\r
	205	NotifyContext,\r
	206	ReadyToBootEvent\r
	207	);\r
	208	} else {\r
	209	//\r
	210	// For UEFI 2.0 and the future use an Event Group\r
	211	//\r
	212	Status = gBS->CreateEventEx (\r
93b0fbc8	213	EVT_NOTIFY_SIGNAL,\r
79964ac8	214	NotifyTpl,\r
	215	NotifyFunction,\r
	216	NotifyContext,\r
	217	&gEfiEventReadyToBootGuid,\r
	218	ReadyToBootEvent\r
	219	);\r
	220	}\r
	221	\r
	222	return Status;\r
	223	}\r
	224	\r
	225	\r
	226	/**\r
	227	Signal a Ready to Boot Event.\r
	228	\r
	229	Create a Ready to Boot Event. Signal it and close it. This causes other\r
	230	events of the same event group to be signaled in other modules.\r
	231	\r
	232	**/\r
	233	VOID\r
	234	EFIAPI\r
	235	EfiSignalEventReadyToBoot (\r
	236	VOID\r
	237	)\r
	238	{\r
	239	EFI_STATUS Status;\r
	240	EFI_EVENT ReadyToBootEvent;\r
	241	\r
	242	Status = EfiCreateEventReadyToBoot (&ReadyToBootEvent);\r
	243	if (!EFI_ERROR (Status)) {\r
	244	gBS->SignalEvent (ReadyToBootEvent);\r
	245	gBS->CloseEvent (ReadyToBootEvent);\r
	246	}\r
	247	}\r
	248	\r
	249	/**\r
	250	Signal a Legacy Boot Event.\r
	251	\r
	252	Create a legacy Boot Event. Signal it and close it. This causes other\r
	253	events of the same event group to be signaled in other modules.\r
	254	\r
	255	**/\r
	256	VOID\r
	257	EFIAPI\r
	258	EfiSignalEventLegacyBoot (\r
	259	VOID\r
	260	)\r
	261	{\r
	262	EFI_STATUS Status;\r
	263	EFI_EVENT LegacyBootEvent;\r
	264	\r
	265	Status = EfiCreateEventLegacyBoot (&LegacyBootEvent);\r
	266	if (!EFI_ERROR (Status)) {\r
	267	gBS->SignalEvent (LegacyBootEvent);\r
	268	gBS->CloseEvent (LegacyBootEvent);\r
	269	}\r
	270	}\r
	271	\r
	272	\r
	273	/**\r
	274	Check to see if the Firmware Volume (FV) Media Device Path is valid\r
	275	\r
	276	Tiano extended the EFI 1.10 device path nodes. Tiano does not own this enum\r
	277	so as we move to UEFI 2.0 support we must use a mechanism that conforms with\r
278	the UEFI 2.0 specification to define the FV device path. An UEFI GUIDed\r
279	device path is defined for Tiano extensions of device path. If the code\r
280	is compiled to conform with the UEFI 2.0 specification use the new device path\r
281	else use the old form for backwards compatability. The return value to this\r
282	function points to a location in FvDevicePathNode and it does not allocate\r
283	new memory for the GUID pointer that is returned.\r
284	\r
285	@param FvDevicePathNode Pointer to FV device path to check.\r
286	\r
287	@retval NULL FvDevicePathNode is not valid.\r
288	@retval Other FvDevicePathNode is valid and pointer to NameGuid was returned.\r
289	\r
290	**/\r
291	EFI_GUID *\r
292	EFIAPI\r
293	EfiGetNameGuidFromFwVolDevicePathNode (\r
294	IN CONST MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *FvDevicePathNode\r
295	)\r
296	{\r
297	ASSERT (FvDevicePathNode != NULL);\r
298	\r
299	//\r
84dcd70d LG	300	// EFI Specification extension on Media Device Path. MEDIA_FW_VOL_FILEPATH_DEVICE_PATH is adopted by UEFI later and added in UEFI2.10. \r
	301	// In EdkCompatibility Package, we only support MEDIA_FW_VOL_FILEPATH_DEVICE_PATH that complies with\r
	302	// EFI 1.10 and UEFI 2.10.\r
79964ac8	303	//\r
84dcd70d LG	304	if (DevicePathType (&FvDevicePathNode->Header) == MEDIA_DEVICE_PATH &&\r
	305	DevicePathSubType (&FvDevicePathNode->Header) == MEDIA_PIWG_FW_FILE_DP) {\r
	306	return (EFI_GUID *) &FvDevicePathNode->FvFileName;\r
79964ac8	307	}\r
	308	\r
	309	return NULL;\r
	310	}\r
	311	\r
	312	\r
	313	/**\r
	314	Initialize a Firmware Volume (FV) Media Device Path node.\r
	315	\r
	316	Tiano extended the EFI 1.10 device path nodes. Tiano does not own this enum\r
	317	so as we move to UEFI 2.0 support we must use a mechanism that conforms with\r
	318	the UEFI 2.0 specification to define the FV device path. An UEFI GUIDed\r
	319	device path is defined for Tiano extensions of device path. If the code\r
	320	is compiled to conform with the UEFI 2.0 specification use the new device path\r
	321	else use the old form for backwards compatability.\r
	322	\r
	323	@param FvDevicePathNode Pointer to a FV device path node to initialize\r
	324	@param NameGuid FV file name to use in FvDevicePathNode\r
	325	\r
	326	**/\r
	327	VOID\r
	328	EFIAPI\r
	329	EfiInitializeFwVolDevicepathNode (\r
	330	IN OUT MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *FvDevicePathNode,\r
3d6f81d7	331	IN CONST EFI_GUID *NameGuid\r
79964ac8	332	)\r
	333	{\r
	334	ASSERT (FvDevicePathNode != NULL);\r
	335	ASSERT (NameGuid != NULL);\r
	336	\r
79964ac8	337	//\r
84dcd70d LG	338	// EFI Specification extension on Media Device Path. MEDIA_FW_VOL_FILEPATH_DEVICE_PATH is adopted by UEFI later and added in UEFI2.10. \r
	339	// In EdkCompatibility Package, we only support MEDIA_FW_VOL_FILEPATH_DEVICE_PATH that complies with\r
	340	// EFI 1.10 and UEFI 2.10.\r
79964ac8	341	//\r
84dcd70d LG	342	FvDevicePathNode->Header.Type = MEDIA_DEVICE_PATH;\r
	343	FvDevicePathNode->Header.SubType = MEDIA_PIWG_FW_FILE_DP;\r
	344	SetDevicePathNodeLength (&FvDevicePathNode->Header, sizeof (MEDIA_FW_VOL_FILEPATH_DEVICE_PATH));\r
	345	\r
	346	CopyGuid (&FvDevicePathNode->FvFileName, NameGuid);\r
79964ac8	347	}\r
79964ac8	348	\r