[mirror_edk2.git] / MdeModulePkg / Universal / ResetSystemRuntimeDxe / ResetSystem.c

/** @file\r
  Reset Architectural and Reset Notification protocols implementation.\r
\r
  Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
\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 "ResetSystem.h"\r
\r
GLOBAL_REMOVE_IF_UNREFERENCED CHAR16 *mResetTypeStr[] = {\r
  L"Cold", L"Warm", L"Shutdown", L"PlatformSpecific"\r
};\r
\r
//\r
// The current ResetSystem() notification recursion depth\r
//\r
UINTN  mResetNotifyDepth = 0;\r
\r
/**\r
  Register a notification function to be called when ResetSystem() is called.\r
\r
  The RegisterResetNotify() function registers a notification function that is called when\r
  ResetSystem()is called and prior to completing the reset of the platform.\r
  The registered functions must not perform a platform reset themselves. These\r
  notifications are intended only for the notification of components which may need some\r
  special-purpose maintenance prior to the platform resetting.\r
  The list of registered reset notification functions are processed if ResetSystem()is called\r
  before ExitBootServices(). The list of registered reset notification functions is ignored if\r
  ResetSystem()is called after ExitBootServices().\r
\r
  @param[in]  This              A pointer to the EFI_RESET_NOTIFICATION_PROTOCOL instance.\r
  @param[in]  ResetFunction     Points to the function to be called when a ResetSystem() is executed.\r
\r
  @retval EFI_SUCCESS           The reset notification function was successfully registered.\r
  @retval EFI_INVALID_PARAMETER ResetFunction is NULL.\r
  @retval EFI_OUT_OF_RESOURCES  There are not enough resources available to register the reset notification function.\r
  @retval EFI_ALREADY_STARTED   The reset notification function specified by ResetFunction has already been registered.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
RegisterResetNotify (\r
  IN EFI_RESET_NOTIFICATION_PROTOCOL *This,\r
  IN EFI_RESET_SYSTEM                ResetFunction\r
  )\r
{\r
  RESET_NOTIFICATION_INSTANCE        *Instance;\r
  LIST_ENTRY                         *Link;\r
  RESET_NOTIFY_ENTRY                 *Entry;\r
\r
  if (ResetFunction == NULL) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  Instance = RESET_NOTIFICATION_INSTANCE_FROM_THIS (This);\r
\r
  for ( Link = GetFirstNode (&Instance->ResetNotifies)\r
      ; !IsNull (&Instance->ResetNotifies, Link)\r
      ; Link = GetNextNode (&Instance->ResetNotifies, Link)\r
      ) {\r
    Entry = RESET_NOTIFY_ENTRY_FROM_LINK (Link);\r
    if (Entry->ResetNotify == ResetFunction) {\r
      return EFI_ALREADY_STARTED;\r
    }\r
  }\r
\r
  ASSERT (IsNull (&Instance->ResetNotifies, Link));\r
  Entry = AllocatePool (sizeof (*Entry));\r
  if (Entry == NULL) {\r
    return EFI_OUT_OF_RESOURCES;\r
  }\r
  Entry->Signature   = RESET_NOTIFY_ENTRY_SIGNATURE;\r
  Entry->ResetNotify = ResetFunction;\r
  InsertTailList (&Instance->ResetNotifies, &Entry->Link);\r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  Unregister a notification function.\r
\r
  The UnregisterResetNotify() function removes the previously registered\r
  notification using RegisterResetNotify().\r
\r
  @param[in]  This              A pointer to the EFI_RESET_NOTIFICATION_PROTOCOL instance.\r
  @param[in]  ResetFunction     The pointer to the ResetFunction being unregistered.\r
\r
  @retval EFI_SUCCESS           The reset notification function was unregistered.\r
  @retval EFI_INVALID_PARAMETER ResetFunction is NULL.\r
  @retval EFI_INVALID_PARAMETER The reset notification function specified by ResetFunction was not previously\r
                                registered using RegisterResetNotify().\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
UnregisterResetNotify (\r
  IN EFI_RESET_NOTIFICATION_PROTOCOL *This,\r
  IN EFI_RESET_SYSTEM                ResetFunction\r
  )\r
{\r
  RESET_NOTIFICATION_INSTANCE        *Instance;\r
  LIST_ENTRY                         *Link;\r
  RESET_NOTIFY_ENTRY                 *Entry;\r
\r
  if (ResetFunction == NULL) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  Instance = RESET_NOTIFICATION_INSTANCE_FROM_THIS (This);\r
\r
  for ( Link = GetFirstNode (&Instance->ResetNotifies)\r
      ; !IsNull (&Instance->ResetNotifies, Link)\r
      ; Link = GetNextNode (&Instance->ResetNotifies, Link)\r
      ) {\r
    Entry = RESET_NOTIFY_ENTRY_FROM_LINK (Link);\r
    if (Entry->ResetNotify == ResetFunction) {\r
      RemoveEntryList (&Entry->Link);\r
      FreePool (Entry);\r
      return EFI_SUCCESS;\r
    }\r
  }\r
\r
  return EFI_INVALID_PARAMETER;\r
}\r
\r
RESET_NOTIFICATION_INSTANCE mResetNotification = {\r
  RESET_NOTIFICATION_INSTANCE_SIGNATURE,\r
  {\r
    RegisterResetNotify,\r
    UnregisterResetNotify\r
  },\r
  INITIALIZE_LIST_HEAD_VARIABLE (mResetNotification.ResetNotifies)\r
};\r
\r
RESET_NOTIFICATION_INSTANCE mPlatformSpecificResetFilter = {\r
  RESET_NOTIFICATION_INSTANCE_SIGNATURE,\r
  {\r
    RegisterResetNotify,\r
    UnregisterResetNotify\r
  },\r
  INITIALIZE_LIST_HEAD_VARIABLE (mPlatformSpecificResetFilter.ResetNotifies)\r
};\r
\r
RESET_NOTIFICATION_INSTANCE mPlatformSpecificResetHandler = {\r
  RESET_NOTIFICATION_INSTANCE_SIGNATURE,\r
  {\r
    RegisterResetNotify,\r
    UnregisterResetNotify\r
  },\r
  INITIALIZE_LIST_HEAD_VARIABLE (mPlatformSpecificResetHandler.ResetNotifies)\r
};\r
\r
/**\r
  The driver's entry point.\r
\r
  It initializes the Reset Architectural Protocol.\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           Cannot install ResetArch protocol.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
InitializeResetSystem (\r
  IN EFI_HANDLE        ImageHandle,\r
  IN EFI_SYSTEM_TABLE  *SystemTable\r
  )\r
{\r
  EFI_STATUS  Status;\r
  EFI_HANDLE  Handle;\r
\r
  //\r
  // Make sure the Reset Architectural Protocol is not already installed in the system\r
  //\r
  ASSERT_PROTOCOL_ALREADY_INSTALLED (NULL, &gEfiResetArchProtocolGuid);\r
\r
  //\r
  // Hook the runtime service table\r
  //\r
  gRT->ResetSystem = ResetSystem;\r
\r
  //\r
  // Now install the Reset RT AP on a new handle\r
  //\r
  Handle = NULL;\r
  Status = gBS->InstallMultipleProtocolInterfaces (\r
                  &Handle,\r
                  &gEfiResetArchProtocolGuid,         NULL,\r
                  &gEfiResetNotificationProtocolGuid, &mResetNotification.ResetNotification,\r
                  &gEdkiiPlatformSpecificResetFilterProtocolGuid, &mPlatformSpecificResetFilter.ResetNotification,\r
                  &gEdkiiPlatformSpecificResetHandlerProtocolGuid, &mPlatformSpecificResetHandler.ResetNotification,\r
                  NULL\r
                  );\r
  ASSERT_EFI_ERROR (Status);\r
\r
  return Status;\r
}\r
\r
/**\r
  Put the system into S3 power state.\r
**/\r
VOID\r
DoS3 (\r
  VOID\r
  )\r
{\r
  EnterS3WithImmediateWake ();\r
\r
  //\r
  // Should not return\r
  //\r
  CpuDeadLoop ();\r
}\r
\r
/**\r
  Resets the entire platform.\r
\r
  @param[in] ResetType          The type of reset to perform.\r
  @param[in] ResetStatus        The status code for the reset.\r
  @param[in] DataSize           The size, in bytes, of ResetData.\r
  @param[in] ResetData          For a ResetType of EfiResetCold, EfiResetWarm, or\r
                                EfiResetShutdown the data buffer starts with a Null-terminated\r
                                string, optionally followed by additional binary data.\r
                                The string is a description that the caller may use to further\r
                                indicate the reason for the system reset. ResetData is only\r
                                valid if ResetStatus is something other than EFI_SUCCESS\r
                                unless the ResetType is EfiResetPlatformSpecific\r
                                where a minimum amount of ResetData is always required.\r
                                For a ResetType of EfiResetPlatformSpecific the data buffer\r
                                also starts with a Null-terminated string that is followed\r
                                by an EFI_GUID that describes the specific type of reset to perform.\r
**/\r
VOID\r
EFIAPI\r
ResetSystem (\r
  IN EFI_RESET_TYPE   ResetType,\r
  IN EFI_STATUS       ResetStatus,\r
  IN UINTN            DataSize,\r
  IN VOID             *ResetData OPTIONAL\r
  )\r
{\r
  EFI_STATUS          Status;\r
  UINTN               Size;\r
  UINTN               CapsuleDataPtr;\r
  LIST_ENTRY          *Link;\r
  RESET_NOTIFY_ENTRY  *Entry;\r
\r
  //\r
  // Only do REPORT_STATUS_CODE() on first call to ResetSystem()\r
  //\r
  if (mResetNotifyDepth == 0) {\r
    //\r
    // Indicate reset system runtime service is called.\r
    //\r
    REPORT_STATUS_CODE (EFI_PROGRESS_CODE, (EFI_SOFTWARE_EFI_RUNTIME_SERVICE | EFI_SW_RS_PC_RESET_SYSTEM));\r
  }\r
\r
  mResetNotifyDepth++;\r
  DEBUG ((\r
    DEBUG_INFO, "DXE ResetSystem2: ResetType %s, Call Depth = %d.\n",\r
    mResetTypeStr[ResetType], mResetNotifyDepth\r
    ));\r
\r
  if (mResetNotifyDepth <= MAX_RESET_NOTIFY_DEPTH) {\r
    if (!EfiAtRuntime ()) {\r
      //\r
      // Call reset notification functions registered through the\r
      // EDKII_PLATFORM_SPECIFIC_RESET_FILTER_PROTOCOL.\r
      //\r
      for ( Link = GetFirstNode (&mPlatformSpecificResetFilter.ResetNotifies)\r
          ; !IsNull (&mPlatformSpecificResetFilter.ResetNotifies, Link)\r
          ; Link = GetNextNode (&mPlatformSpecificResetFilter.ResetNotifies, Link)\r
          ) {\r
        Entry = RESET_NOTIFY_ENTRY_FROM_LINK (Link);\r
        Entry->ResetNotify (ResetType, ResetStatus, DataSize, ResetData);\r
      }\r
      //\r
      // Call reset notification functions registered through the\r
      // EFI_RESET_NOTIFICATION_PROTOCOL.\r
      //\r
      for ( Link = GetFirstNode (&mResetNotification.ResetNotifies)\r
          ; !IsNull (&mResetNotification.ResetNotifies, Link)\r
          ; Link = GetNextNode (&mResetNotification.ResetNotifies, Link)\r
          ) {\r
        Entry = RESET_NOTIFY_ENTRY_FROM_LINK (Link);\r
        Entry->ResetNotify (ResetType, ResetStatus, DataSize, ResetData);\r
      }\r
      //\r
      // call reset notification functions registered through the\r
      // EDKII_PLATFORM_SPECIFIC_RESET_HANDLER_PROTOCOL.\r
      //\r
      for ( Link = GetFirstNode (&mPlatformSpecificResetHandler.ResetNotifies)\r
          ; !IsNull (&mPlatformSpecificResetHandler.ResetNotifies, Link)\r
          ; Link = GetNextNode (&mPlatformSpecificResetHandler.ResetNotifies, Link)\r
          ) {\r
        Entry = RESET_NOTIFY_ENTRY_FROM_LINK (Link);\r
        Entry->ResetNotify (ResetType, ResetStatus, DataSize, ResetData);\r
      }\r
    }\r
  } else {\r
    ASSERT (ResetType < ARRAY_SIZE (mResetTypeStr));\r
    DEBUG ((DEBUG_ERROR, "DXE ResetSystem2: Maximum reset call depth is met. Use the current reset type: %s!\n", mResetTypeStr[ResetType]));\r
  }\r
\r
  switch (ResetType) {\r
  case EfiResetWarm:\r
\r
    //\r
    //Check if there are pending capsules to process\r
    //\r
    Size = sizeof (CapsuleDataPtr);\r
    Status =  EfiGetVariable (\r
                 EFI_CAPSULE_VARIABLE_NAME,\r
                 &gEfiCapsuleVendorGuid,\r
                 NULL,\r
                 &Size,\r
                 (VOID *) &CapsuleDataPtr\r
                 );\r
\r
    if (Status == EFI_SUCCESS) {\r
      //\r
      //Process capsules across a system reset.\r
      //\r
      DoS3();\r
    }\r
\r
    ResetWarm ();\r
    break;\r
\r
 case EfiResetCold:\r
    ResetCold ();\r
    break;\r
\r
  case EfiResetShutdown:\r
    ResetShutdown ();\r
    return ;\r
\r
  case EfiResetPlatformSpecific:\r
    ResetPlatformSpecific (DataSize, ResetData);\r
    return;\r
\r
  default:\r
    return ;\r
  }\r
\r
  //\r
  // Given we should have reset getting here would be bad\r
  //\r
  ASSERT (FALSE);\r
}\r
Commit	Line	Data
51a0c5f2	1	/** @file\r
cf6da556	2	Reset Architectural and Reset Notification protocols implementation.\r
51a0c5f2	3	\r
d1102dba	4	Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
51a0c5f2	5	\r
	6	This program and the accompanying materials\r
	7	are licensed and made available under the terms and conditions of the BSD License\r
	8	which accompanies this distribution. The full text of the license may be found at\r
	9	http://opensource.org/licenses/bsd-license.php\r
	10	\r
	11	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	12	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	13	\r
	14	**/\r
	15	\r
	16	#include "ResetSystem.h"\r
	17	\r
4bf95a9f RN	18	GLOBAL_REMOVE_IF_UNREFERENCED CHAR16 *mResetTypeStr[] = {\r
	19	L"Cold", L"Warm", L"Shutdown", L"PlatformSpecific"\r
	20	};\r
	21	\r
99a6529e MK	22	//\r
	23	// The current ResetSystem() notification recursion depth\r
	24	//\r
	25	UINTN mResetNotifyDepth = 0;\r
	26	\r
cf6da556 RN	27	/**\r
	28	Register a notification function to be called when ResetSystem() is called.\r
	29	\r
	30	The RegisterResetNotify() function registers a notification function that is called when\r
	31	ResetSystem()is called and prior to completing the reset of the platform.\r
	32	The registered functions must not perform a platform reset themselves. These\r
	33	notifications are intended only for the notification of components which may need some\r
	34	special-purpose maintenance prior to the platform resetting.\r
	35	The list of registered reset notification functions are processed if ResetSystem()is called\r
	36	before ExitBootServices(). The list of registered reset notification functions is ignored if\r
	37	ResetSystem()is called after ExitBootServices().\r
	38	\r
	39	@param[in] This A pointer to the EFI_RESET_NOTIFICATION_PROTOCOL instance.\r
	40	@param[in] ResetFunction Points to the function to be called when a ResetSystem() is executed.\r
	41	\r
	42	@retval EFI_SUCCESS The reset notification function was successfully registered.\r
	43	@retval EFI_INVALID_PARAMETER ResetFunction is NULL.\r
	44	@retval EFI_OUT_OF_RESOURCES There are not enough resources available to register the reset notification function.\r
	45	@retval EFI_ALREADY_STARTED The reset notification function specified by ResetFunction has already been registered.\r
	46	\r
	47	**/\r
	48	EFI_STATUS\r
	49	EFIAPI\r
	50	RegisterResetNotify (\r
	51	IN EFI_RESET_NOTIFICATION_PROTOCOL *This,\r
	52	IN EFI_RESET_SYSTEM ResetFunction\r
	53	)\r
	54	{\r
	55	RESET_NOTIFICATION_INSTANCE *Instance;\r
	56	LIST_ENTRY *Link;\r
	57	RESET_NOTIFY_ENTRY *Entry;\r
	58	\r
	59	if (ResetFunction == NULL) {\r
	60	return EFI_INVALID_PARAMETER;\r
	61	}\r
	62	\r
	63	Instance = RESET_NOTIFICATION_INSTANCE_FROM_THIS (This);\r
	64	\r
	65	for ( Link = GetFirstNode (&Instance->ResetNotifies)\r
	66	; !IsNull (&Instance->ResetNotifies, Link)\r
	67	; Link = GetNextNode (&Instance->ResetNotifies, Link)\r
	68	) {\r
	69	Entry = RESET_NOTIFY_ENTRY_FROM_LINK (Link);\r
	70	if (Entry->ResetNotify == ResetFunction) {\r
	71	return EFI_ALREADY_STARTED;\r
	72	}\r
	73	}\r
	74	\r
	75	ASSERT (IsNull (&Instance->ResetNotifies, Link));\r
	76	Entry = AllocatePool (sizeof (*Entry));\r
	77	if (Entry == NULL) {\r
	78	return EFI_OUT_OF_RESOURCES;\r
	79	}\r
	80	Entry->Signature = RESET_NOTIFY_ENTRY_SIGNATURE;\r
	81	Entry->ResetNotify = ResetFunction;\r
	82	InsertTailList (&Instance->ResetNotifies, &Entry->Link);\r
	83	return EFI_SUCCESS;\r
	84	}\r
	85	\r
	86	/**\r
	87	Unregister a notification function.\r
	88	\r
	89	The UnregisterResetNotify() function removes the previously registered\r
	90	notification using RegisterResetNotify().\r
91	\r
92	@param[in] This A pointer to the EFI_RESET_NOTIFICATION_PROTOCOL instance.\r
93	@param[in] ResetFunction The pointer to the ResetFunction being unregistered.\r
94	\r
95	@retval EFI_SUCCESS The reset notification function was unregistered.\r
96	@retval EFI_INVALID_PARAMETER ResetFunction is NULL.\r
97	@retval EFI_INVALID_PARAMETER The reset notification function specified by ResetFunction was not previously\r
98	registered using RegisterResetNotify().\r
99	\r
100	**/\r
101	EFI_STATUS\r
102	EFIAPI\r
103	UnregisterResetNotify (\r
104	IN EFI_RESET_NOTIFICATION_PROTOCOL *This,\r
105	IN EFI_RESET_SYSTEM ResetFunction\r
106	)\r
107	{\r
108	RESET_NOTIFICATION_INSTANCE *Instance;\r
109	LIST_ENTRY *Link;\r
110	RESET_NOTIFY_ENTRY *Entry;\r
111	\r
112	if (ResetFunction == NULL) {\r
113	return EFI_INVALID_PARAMETER;\r
114	}\r
115	\r
116	Instance = RESET_NOTIFICATION_INSTANCE_FROM_THIS (This);\r
117	\r
118	for ( Link = GetFirstNode (&Instance->ResetNotifies)\r
119	; !IsNull (&Instance->ResetNotifies, Link)\r
120	; Link = GetNextNode (&Instance->ResetNotifies, Link)\r
121	) {\r
122	Entry = RESET_NOTIFY_ENTRY_FROM_LINK (Link);\r
123	if (Entry->ResetNotify == ResetFunction) {\r
124	RemoveEntryList (&Entry->Link);\r
125	FreePool (Entry);\r
126	return EFI_SUCCESS;\r
127	}\r
128	}\r
129	\r
130	return EFI_INVALID_PARAMETER;\r
131	}\r
132	\r
133	RESET_NOTIFICATION_INSTANCE mResetNotification = {\r
134	RESET_NOTIFICATION_INSTANCE_SIGNATURE,\r
135	{\r
136	RegisterResetNotify,\r
137	UnregisterResetNotify\r
138	},\r
139	INITIALIZE_LIST_HEAD_VARIABLE (mResetNotification.ResetNotifies)\r
140	};\r
141	\r
99a6529e MK	142	RESET_NOTIFICATION_INSTANCE mPlatformSpecificResetFilter = {\r
	143	RESET_NOTIFICATION_INSTANCE_SIGNATURE,\r
	144	{\r
	145	RegisterResetNotify,\r
	146	UnregisterResetNotify\r
	147	},\r
	148	INITIALIZE_LIST_HEAD_VARIABLE (mPlatformSpecificResetFilter.ResetNotifies)\r
	149	};\r
	150	\r
	151	RESET_NOTIFICATION_INSTANCE mPlatformSpecificResetHandler = {\r
	152	RESET_NOTIFICATION_INSTANCE_SIGNATURE,\r
	153	{\r
	154	RegisterResetNotify,\r
	155	UnregisterResetNotify\r
	156	},\r
	157	INITIALIZE_LIST_HEAD_VARIABLE (mPlatformSpecificResetHandler.ResetNotifies)\r
	158	};\r
	159	\r
51a0c5f2	160	/**\r
	161	The driver's entry point.\r
	162	\r
	163	It initializes the Reset Architectural Protocol.\r
	164	\r
d1102dba	165	@param[in] ImageHandle The firmware allocated handle for the EFI image.\r
51a0c5f2	166	@param[in] SystemTable A pointer to the EFI System Table.\r
d1102dba	167	\r
51a0c5f2	168	@retval EFI_SUCCESS The entry point is executed successfully.\r
	169	@retval other Cannot install ResetArch protocol.\r
	170	\r
	171	**/\r
	172	EFI_STATUS\r
	173	EFIAPI\r
	174	InitializeResetSystem (\r
	175	IN EFI_HANDLE ImageHandle,\r
	176	IN EFI_SYSTEM_TABLE *SystemTable\r
	177	)\r
	178	{\r
	179	EFI_STATUS Status;\r
34861f43	180	EFI_HANDLE Handle;\r
51a0c5f2	181	\r
	182	//\r
	183	// Make sure the Reset Architectural Protocol is not already installed in the system\r
	184	//\r
	185	ASSERT_PROTOCOL_ALREADY_INSTALLED (NULL, &gEfiResetArchProtocolGuid);\r
	186	\r
	187	//\r
	188	// Hook the runtime service table\r
	189	//\r
	190	gRT->ResetSystem = ResetSystem;\r
	191	\r
	192	//\r
	193	// Now install the Reset RT AP on a new handle\r
	194	//\r
34861f43	195	Handle = NULL;\r
51a0c5f2	196	Status = gBS->InstallMultipleProtocolInterfaces (\r
34861f43	197	&Handle,\r
cf6da556 RN	198	&gEfiResetArchProtocolGuid, NULL,\r
cf6da556 RN	199	&gEfiResetNotificationProtocolGuid, &mResetNotification.ResetNotification,\r
99a6529e MK	200	&gEdkiiPlatformSpecificResetFilterProtocolGuid, &mPlatformSpecificResetFilter.ResetNotification,\r
99a6529e MK	201	&gEdkiiPlatformSpecificResetHandlerProtocolGuid, &mPlatformSpecificResetHandler.ResetNotification,\r
51a0c5f2	202	NULL\r
	203	);\r
	204	ASSERT_EFI_ERROR (Status);\r
	205	\r
	206	return Status;\r
	207	}\r
	208	\r
51a0c5f2	209	/**\r
d1102dba	210	Put the system into S3 power state.\r
51a0c5f2	211	**/\r
	212	VOID\r
	213	DoS3 (\r
	214	VOID\r
	215	)\r
	216	{\r
	217	EnterS3WithImmediateWake ();\r
	218	\r
	219	//\r
	220	// Should not return\r
	221	//\r
	222	CpuDeadLoop ();\r
	223	}\r
	224	\r
	225	/**\r
	226	Resets the entire platform.\r
	227	\r
	228	@param[in] ResetType The type of reset to perform.\r
	229	@param[in] ResetStatus The status code for the reset.\r
37078045	230	@param[in] DataSize The size, in bytes, of ResetData.\r
51a0c5f2	231	@param[in] ResetData For a ResetType of EfiResetCold, EfiResetWarm, or\r
	232	EfiResetShutdown the data buffer starts with a Null-terminated\r
	233	string, optionally followed by additional binary data.\r
37078045 RN	234	The string is a description that the caller may use to further\r
	235	indicate the reason for the system reset. ResetData is only\r
	236	valid if ResetStatus is something other than EFI_SUCCESS\r
	237	unless the ResetType is EfiResetPlatformSpecific\r
	238	where a minimum amount of ResetData is always required.\r
eeeabe40 SZ	239	For a ResetType of EfiResetPlatformSpecific the data buffer\r
	240	also starts with a Null-terminated string that is followed\r
	241	by an EFI_GUID that describes the specific type of reset to perform.\r
51a0c5f2	242	**/\r
	243	VOID\r
	244	EFIAPI\r
	245	ResetSystem (\r
	246	IN EFI_RESET_TYPE ResetType,\r
	247	IN EFI_STATUS ResetStatus,\r
	248	IN UINTN DataSize,\r
	249	IN VOID *ResetData OPTIONAL\r
	250	)\r
	251	{\r
cf6da556 RN	252	EFI_STATUS Status;\r
	253	UINTN Size;\r
	254	UINTN CapsuleDataPtr;\r
	255	LIST_ENTRY *Link;\r
	256	RESET_NOTIFY_ENTRY *Entry;\r
99a6529e	257	\r
37623a5c	258	//\r
99a6529e	259	// Only do REPORT_STATUS_CODE() on first call to ResetSystem()\r
37623a5c	260	//\r
99a6529e MK	261	if (mResetNotifyDepth == 0) {\r
	262	//\r
	263	// Indicate reset system runtime service is called.\r
	264	//\r
	265	REPORT_STATUS_CODE (EFI_PROGRESS_CODE, (EFI_SOFTWARE_EFI_RUNTIME_SERVICE \| EFI_SW_RS_PC_RESET_SYSTEM));\r
	266	}\r
51a0c5f2	267	\r
99a6529e	268	mResetNotifyDepth++;\r
9c227e07 RN	269	DEBUG ((\r
	270	DEBUG_INFO, "DXE ResetSystem2: ResetType %s, Call Depth = %d.\n",\r
	271	mResetTypeStr[ResetType], mResetNotifyDepth\r
	272	));\r
4bf95a9f RN	273	\r
	274	if (mResetNotifyDepth <= MAX_RESET_NOTIFY_DEPTH) {\r
	275	if (!EfiAtRuntime ()) {\r
	276	//\r
	277	// Call reset notification functions registered through the\r
	278	// EDKII_PLATFORM_SPECIFIC_RESET_FILTER_PROTOCOL.\r
	279	//\r
	280	for ( Link = GetFirstNode (&mPlatformSpecificResetFilter.ResetNotifies)\r
	281	; !IsNull (&mPlatformSpecificResetFilter.ResetNotifies, Link)\r
	282	; Link = GetNextNode (&mPlatformSpecificResetFilter.ResetNotifies, Link)\r
	283	) {\r
	284	Entry = RESET_NOTIFY_ENTRY_FROM_LINK (Link);\r
	285	Entry->ResetNotify (ResetType, ResetStatus, DataSize, ResetData);\r
	286	}\r
	287	//\r
	288	// Call reset notification functions registered through the\r
	289	// EFI_RESET_NOTIFICATION_PROTOCOL.\r
	290	//\r
	291	for ( Link = GetFirstNode (&mResetNotification.ResetNotifies)\r
	292	; !IsNull (&mResetNotification.ResetNotifies, Link)\r
	293	; Link = GetNextNode (&mResetNotification.ResetNotifies, Link)\r
	294	) {\r
	295	Entry = RESET_NOTIFY_ENTRY_FROM_LINK (Link);\r
	296	Entry->ResetNotify (ResetType, ResetStatus, DataSize, ResetData);\r
	297	}\r
	298	//\r
d1102dba	299	// call reset notification functions registered through the\r
4bf95a9f RN	300	// EDKII_PLATFORM_SPECIFIC_RESET_HANDLER_PROTOCOL.\r
	301	//\r
	302	for ( Link = GetFirstNode (&mPlatformSpecificResetHandler.ResetNotifies)\r
	303	; !IsNull (&mPlatformSpecificResetHandler.ResetNotifies, Link)\r
	304	; Link = GetNextNode (&mPlatformSpecificResetHandler.ResetNotifies, Link)\r
	305	) {\r
	306	Entry = RESET_NOTIFY_ENTRY_FROM_LINK (Link);\r
	307	Entry->ResetNotify (ResetType, ResetStatus, DataSize, ResetData);\r
	308	}\r
cf6da556	309	}\r
4bf95a9f RN	310	} else {\r
	311	ASSERT (ResetType < ARRAY_SIZE (mResetTypeStr));\r
	312	DEBUG ((DEBUG_ERROR, "DXE ResetSystem2: Maximum reset call depth is met. Use the current reset type: %s!\n", mResetTypeStr[ResetType]));\r
cf6da556 RN	313	}\r
cf6da556 RN	314	\r
51a0c5f2	315	switch (ResetType) {\r
	316	case EfiResetWarm:\r
	317	\r
	318	//\r
	319	//Check if there are pending capsules to process\r
	320	//\r
	321	Size = sizeof (CapsuleDataPtr);\r
	322	Status = EfiGetVariable (\r
	323	EFI_CAPSULE_VARIABLE_NAME,\r
	324	&gEfiCapsuleVendorGuid,\r
	325	NULL,\r
	326	&Size,\r
	327	(VOID *) &CapsuleDataPtr\r
	328	);\r
	329	\r
	330	if (Status == EFI_SUCCESS) {\r
	331	//\r
	332	//Process capsules across a system reset.\r
	333	//\r
	334	DoS3();\r
	335	}\r
	336	\r
	337	ResetWarm ();\r
51a0c5f2	338	break;\r
	339	\r
	340	case EfiResetCold:\r
	341	ResetCold ();\r
	342	break;\r
	343	\r
	344	case EfiResetShutdown:\r
	345	ResetShutdown ();\r
	346	return ;\r
	347	\r
37078045 RN	348	case EfiResetPlatformSpecific:\r
	349	ResetPlatformSpecific (DataSize, ResetData);\r
	350	return;\r
	351	\r
51a0c5f2	352	default:\r
	353	return ;\r
	354	}\r
	355	\r
	356	//\r
	357	// Given we should have reset getting here would be bad\r
	358	//\r
	359	ASSERT (FALSE);\r
	360	}\r