[mirror_edk2.git] / MdeModulePkg / Library / GenericBdsLib / BdsConsole.c

/** @file\r
  BDS Lib functions which contain all the code to connect console device\r
\r
Copyright (c) 2004 - 2008, 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
#include "InternalBdsLib.h"\r
\r
BOOLEAN\r
IsNvNeed (\r
  IN CHAR16 *ConVarName\r
  )\r
{\r
  CHAR16 *Ptr;\r
\r
  Ptr = ConVarName;\r
\r
  //\r
  // If the variable includes "Dev" at last, we consider\r
  // it does not support NV attribute.\r
  //\r
  while (*Ptr) {\r
    Ptr++;\r
  }\r
\r
  if ((*(Ptr-3) == 'D') && (*(Ptr-2) == 'e') && (*(Ptr-1) == 'v')) {\r
    return FALSE;\r
  } else {\r
    return TRUE;\r
  }\r
}\r
\r
\r
/**\r
  This function update console variable based on ConVarName, it can\r
  add or remove one specific console device path from the variable\r
\r
  @param  ConVarName               Console related variable name, ConIn, ConOut,\r
                                   ErrOut.\r
  @param  CustomizedConDevicePath  The console device path which will be added to\r
                                   the console variable ConVarName, this parameter\r
                                   can not be multi-instance.\r
  @param  ExclusiveDevicePath      The console device path which will be removed\r
                                   from the console variable ConVarName, this\r
                                   parameter can not be multi-instance.\r
\r
  @retval EFI_UNSUPPORTED          Add or remove the same device path.\r
  @retval EFI_SUCCESS              Success add or remove the device path from  the\r
                                   console variable.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsLibUpdateConsoleVariable (\r
  IN  CHAR16                    *ConVarName,\r
  IN  EFI_DEVICE_PATH_PROTOCOL  *CustomizedConDevicePath,\r
  IN  EFI_DEVICE_PATH_PROTOCOL  *ExclusiveDevicePath\r
  )\r
{\r
  EFI_DEVICE_PATH_PROTOCOL  *VarConsole;\r
  UINTN                     DevicePathSize;\r
  EFI_DEVICE_PATH_PROTOCOL  *NewDevicePath;\r
  EFI_DEVICE_PATH_PROTOCOL  *TempNewDevicePath;\r
  UINT32                    Attributes;\r
\r
  VarConsole      = NULL;\r
  DevicePathSize  = 0;\r
\r
  //\r
  // Notes: check the device path point, here should check\r
  // with compare memory\r
  //\r
  if (CustomizedConDevicePath == ExclusiveDevicePath) {\r
    return EFI_UNSUPPORTED;\r
  }\r
  //\r
  // Delete the ExclusiveDevicePath from current default console\r
  //\r
  VarConsole = BdsLibGetVariableAndSize (\r
                ConVarName,\r
                &gEfiGlobalVariableGuid,\r
                &DevicePathSize\r
                );\r
\r
  //\r
  // Initialize NewDevicePath\r
  //\r
  NewDevicePath  = VarConsole;\r
\r
  //\r
  // If ExclusiveDevicePath is even the part of the instance in VarConsole, delete it.\r
  // In the end, NewDevicePath is the final device path.\r
  //\r
  if (ExclusiveDevicePath != NULL && VarConsole != NULL) {\r
      NewDevicePath = BdsLibDelPartMatchInstance (VarConsole, ExclusiveDevicePath);\r
  }\r
  //\r
  // Try to append customized device path to NewDevicePath.\r
  //\r
  if (CustomizedConDevicePath != NULL) {\r
    if (!BdsLibMatchDevicePaths (NewDevicePath, CustomizedConDevicePath)) {\r
      //\r
      // Check if there is part of CustomizedConDevicePath in NewDevicePath, delete it.\r
      //\r
      NewDevicePath = BdsLibDelPartMatchInstance (NewDevicePath, CustomizedConDevicePath);\r
      //\r
      // In the first check, the default console variable will be _ModuleEntryPoint,\r
      // just append current customized device path\r
      //\r
      TempNewDevicePath = NewDevicePath;\r
      NewDevicePath = AppendDevicePathInstance (NewDevicePath, CustomizedConDevicePath);\r
      SafeFreePool(TempNewDevicePath);\r
    }\r
  }\r
\r
  //\r
  // The attribute for ConInDev, ConOutDev and ErrOutDev does not include NV.\r
  //\r
  if (IsNvNeed(ConVarName)) {\r
    //\r
    // ConVarName has NV attribute.\r
    //\r
    Attributes = EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE;\r
  } else {\r
    //\r
    // ConVarName does not have NV attribute.\r
    //\r
    Attributes = EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS;\r
  }\r
\r
  //\r
  // Finally, Update the variable of the default console by NewDevicePath\r
  //\r
  gRT->SetVariable (\r
        ConVarName,\r
        &gEfiGlobalVariableGuid,\r
        Attributes,\r
        GetDevicePathSize (NewDevicePath),\r
        NewDevicePath\r
        );\r
\r
  if (VarConsole == NewDevicePath) {\r
    SafeFreePool(VarConsole);\r
  } else {\r
    SafeFreePool(VarConsole);\r
    SafeFreePool(NewDevicePath);\r
  }\r
\r
  return EFI_SUCCESS;\r
\r
}\r
\r
\r
/**\r
  Connect the console device base on the variable ConVarName, if\r
  device path of the ConVarName is multi-instance device path, if\r
  anyone of the instances is connected success, then this function\r
  will return success.\r
\r
  @param  ConVarName               Console related variable name, ConIn, ConOut,\r
                                   ErrOut.\r
\r
  @retval EFI_NOT_FOUND            There is not any console devices connected\r
                                   success\r
  @retval EFI_SUCCESS              Success connect any one instance of the console\r
                                   device path base on the variable ConVarName.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsLibConnectConsoleVariable (\r
  IN  CHAR16                 *ConVarName\r
  )\r
{\r
  EFI_STATUS                Status;\r
  EFI_DEVICE_PATH_PROTOCOL  *StartDevicePath;\r
  UINTN                     VariableSize;\r
  EFI_DEVICE_PATH_PROTOCOL  *Instance;\r
  EFI_DEVICE_PATH_PROTOCOL  *Next;\r
  EFI_DEVICE_PATH_PROTOCOL  *CopyOfDevicePath;\r
  UINTN                     Size;\r
  BOOLEAN                   DeviceExist;\r
\r
  Status      = EFI_SUCCESS;\r
  DeviceExist = FALSE;\r
\r
  //\r
  // Check if the console variable exist\r
  //\r
  StartDevicePath = BdsLibGetVariableAndSize (\r
                      ConVarName,\r
                      &gEfiGlobalVariableGuid,\r
                      &VariableSize\r
                      );\r
  if (StartDevicePath == NULL) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  CopyOfDevicePath = StartDevicePath;\r
  do {\r
    //\r
    // Check every instance of the console variable\r
    //\r
    Instance  = GetNextDevicePathInstance (&CopyOfDevicePath, &Size);\r
    Next      = Instance;\r
    while (!IsDevicePathEndType (Next)) {\r
      Next = NextDevicePathNode (Next);\r
    }\r
\r
    SetDevicePathEndNode (Next);\r
    //\r
    // Check USB1.1 console\r
    //\r
    if ((DevicePathType (Instance) == MESSAGING_DEVICE_PATH) &&\r
       ((DevicePathSubType (Instance) == MSG_USB_CLASS_DP)\r
       || (DevicePathSubType (Instance) == MSG_USB_WWID_DP)\r
       )) {\r
      //\r
      // Check the Usb console in Usb2.0 bus firstly, then Usb1.1 bus\r
      //\r
      Status = BdsLibConnectUsbDevByShortFormDP (PCI_CLASSC_PI_EHCI, Instance);\r
      if (!EFI_ERROR (Status)) {\r
        DeviceExist = TRUE;\r
      }\r
\r
      Status = BdsLibConnectUsbDevByShortFormDP (PCI_CLASSC_PI_UHCI, Instance);\r
      if (!EFI_ERROR (Status)) {\r
        DeviceExist = TRUE;\r
      }\r
    } else {\r
      //\r
      // Connect the instance device path\r
      //\r
      Status = BdsLibConnectDevicePath (Instance);\r
      if (EFI_ERROR (Status)) {\r
        //\r
        // Delete the instance from the console varialbe\r
        //\r
        BdsLibUpdateConsoleVariable (ConVarName, NULL, Instance);\r
      } else {\r
        DeviceExist = TRUE;\r
      }\r
    }\r
    SafeFreePool(Instance);\r
  } while (CopyOfDevicePath != NULL);\r
\r
  gBS->FreePool (StartDevicePath);\r
\r
  if (!DeviceExist) {\r
    return EFI_NOT_FOUND;\r
  }\r
\r
  return EFI_SUCCESS;\r
}\r
\r
\r
/**\r
  This function will search every simpletxt devive in current system,\r
  and make every simpletxt device as pertantial console device.\r
\r
**/\r
VOID\r
EFIAPI\r
BdsLibConnectAllConsoles (\r
  VOID\r
  )\r
{\r
  UINTN                     Index;\r
  EFI_DEVICE_PATH_PROTOCOL  *ConDevicePath;\r
  UINTN                     HandleCount;\r
  EFI_HANDLE                *HandleBuffer;\r
\r
  Index         = 0;\r
  HandleCount   = 0;\r
  HandleBuffer  = NULL;\r
  ConDevicePath = NULL;\r
\r
  //\r
  // Update all the console varables\r
  //\r
  gBS->LocateHandleBuffer (\r
          ByProtocol,\r
          &gEfiSimpleTextInProtocolGuid,\r
          NULL,\r
          &HandleCount,\r
          &HandleBuffer\r
          );\r
  \r
  for (Index = 0; Index < HandleCount; Index++) {\r
    gBS->HandleProtocol (\r
            HandleBuffer[Index],\r
            &gEfiDevicePathProtocolGuid,\r
            (VOID **) &ConDevicePath\r
            );\r
    BdsLibUpdateConsoleVariable (L"ConIn", ConDevicePath, NULL);\r
  }\r
\r
  SafeFreePool(HandleBuffer);\r
\r
  gBS->LocateHandleBuffer (\r
          ByProtocol,\r
          &gEfiSimpleTextOutProtocolGuid,\r
          NULL,\r
          &HandleCount,\r
          &HandleBuffer\r
          );\r
  for (Index = 0; Index < HandleCount; Index++) {\r
    gBS->HandleProtocol (\r
            HandleBuffer[Index],\r
            &gEfiDevicePathProtocolGuid,\r
            (VOID **) &ConDevicePath\r
            );\r
    BdsLibUpdateConsoleVariable (L"ConOut", ConDevicePath, NULL);\r
    BdsLibUpdateConsoleVariable (L"ErrOut", ConDevicePath, NULL);\r
  }\r
\r
  SafeFreePool(HandleBuffer);\r
\r
  //\r
  // Connect all console variables\r
  //\r
  BdsLibConnectAllDefaultConsoles ();\r
\r
}\r
\r
\r
/**\r
  This function will connect console device base on the console\r
  device variable ConIn, ConOut and ErrOut.\r
\r
  @retval EFI_SUCCESS              At least one of the ConIn and ConOut device have\r
                                   been connected success.\r
  @retval EFI_STATUS               Return the status of\r
                                   BdsLibConnectConsoleVariable ().\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BdsLibConnectAllDefaultConsoles (\r
  VOID\r
  )\r
{\r
  EFI_STATUS                Status;\r
\r
  //\r
  // Connect all default console variables\r
  //\r
\r
  //\r
  // It seems impossible not to have any ConOut device on platform,\r
  // so we check the status here.\r
  //\r
  Status = BdsLibConnectConsoleVariable (L"ConOut");\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  //\r
  // Insert the performance probe for Console Out\r
  //\r
  PERF_START (NULL, "ConOut", "BDS", 1);\r
  PERF_END (NULL, "ConOut", "BDS", 0);\r
\r
  //\r
  // Because possibly the platform is legacy free, in such case,\r
  // ConIn devices (Serial Port and PS2 Keyboard ) does not exist,\r
  // so we need not check the status.\r
  //\r
  BdsLibConnectConsoleVariable (L"ConIn");\r
\r
  //\r
  // The _ModuleEntryPoint err out var is legal.\r
  //\r
  BdsLibConnectConsoleVariable (L"ErrOut");\r
\r
  return EFI_SUCCESS;\r
\r
}\r
Commit	Line	Data
897f0eee	1	/** @file\r
	2	BDS Lib functions which contain all the code to connect console device\r
	3	\r
	4	Copyright (c) 2004 - 2008, Intel Corporation. <BR>\r
	5	All rights reserved. This program and the accompanying materials\r
	6	are licensed and made available under the terms and conditions of the BSD License\r
	7	which accompanies this distribution. The full text of the license may be found at\r
	8	http://opensource.org/licenses/bsd-license.php\r
	9	\r
	10	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	11	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	12	\r
	13	**/\r
	14	\r
	15	#include "InternalBdsLib.h"\r
	16	\r
	17	BOOLEAN\r
	18	IsNvNeed (\r
	19	IN CHAR16 *ConVarName\r
	20	)\r
	21	{\r
	22	CHAR16 *Ptr;\r
	23	\r
	24	Ptr = ConVarName;\r
	25	\r
	26	//\r
	27	// If the variable includes "Dev" at last, we consider\r
	28	// it does not support NV attribute.\r
	29	//\r
	30	while (*Ptr) {\r
	31	Ptr++;\r
	32	}\r
	33	\r
	34	if (((Ptr-3) == 'D') && ((Ptr-2) == 'e') && (*(Ptr-1) == 'v')) {\r
	35	return FALSE;\r
	36	} else {\r
	37	return TRUE;\r
	38	}\r
	39	}\r
	40	\r
	41	\r
	42	/**\r
	43	This function update console variable based on ConVarName, it can\r
	44	add or remove one specific console device path from the variable\r
	45	\r
	46	@param ConVarName Console related variable name, ConIn, ConOut,\r
	47	ErrOut.\r
	48	@param CustomizedConDevicePath The console device path which will be added to\r
	49	the console variable ConVarName, this parameter\r
	50	can not be multi-instance.\r
	51	@param ExclusiveDevicePath The console device path which will be removed\r
	52	from the console variable ConVarName, this\r
	53	parameter can not be multi-instance.\r
	54	\r
	55	@retval EFI_UNSUPPORTED Add or remove the same device path.\r
	56	@retval EFI_SUCCESS Success add or remove the device path from the\r
	57	console variable.\r
	58	\r
	59	**/\r
	60	EFI_STATUS\r
	61	EFIAPI\r
	62	BdsLibUpdateConsoleVariable (\r
	63	IN CHAR16 *ConVarName,\r
	64	IN EFI_DEVICE_PATH_PROTOCOL *CustomizedConDevicePath,\r
65	IN EFI_DEVICE_PATH_PROTOCOL *ExclusiveDevicePath\r
66	)\r
67	{\r
68	EFI_DEVICE_PATH_PROTOCOL *VarConsole;\r
69	UINTN DevicePathSize;\r
70	EFI_DEVICE_PATH_PROTOCOL *NewDevicePath;\r
71	EFI_DEVICE_PATH_PROTOCOL *TempNewDevicePath;\r
72	UINT32 Attributes;\r
73	\r
74	VarConsole = NULL;\r
75	DevicePathSize = 0;\r
76	\r
77	//\r
78	// Notes: check the device path point, here should check\r
79	// with compare memory\r
80	//\r
81	if (CustomizedConDevicePath == ExclusiveDevicePath) {\r
82	return EFI_UNSUPPORTED;\r
83	}\r
84	//\r
85	// Delete the ExclusiveDevicePath from current default console\r
86	//\r
87	VarConsole = BdsLibGetVariableAndSize (\r
88	ConVarName,\r
89	&gEfiGlobalVariableGuid,\r
90	&DevicePathSize\r
91	);\r
92	\r
93	//\r
94	// Initialize NewDevicePath\r
95	//\r
96	NewDevicePath = VarConsole;\r
97	\r
98	//\r
99	// If ExclusiveDevicePath is even the part of the instance in VarConsole, delete it.\r
100	// In the end, NewDevicePath is the final device path.\r
101	//\r
102	if (ExclusiveDevicePath != NULL && VarConsole != NULL) {\r
103	NewDevicePath = BdsLibDelPartMatchInstance (VarConsole, ExclusiveDevicePath);\r
104	}\r
105	//\r
106	// Try to append customized device path to NewDevicePath.\r
107	//\r
108	if (CustomizedConDevicePath != NULL) {\r
109	if (!BdsLibMatchDevicePaths (NewDevicePath, CustomizedConDevicePath)) {\r
110	//\r
111	// Check if there is part of CustomizedConDevicePath in NewDevicePath, delete it.\r
112	//\r
113	NewDevicePath = BdsLibDelPartMatchInstance (NewDevicePath, CustomizedConDevicePath);\r
114	//\r
115	// In the first check, the default console variable will be _ModuleEntryPoint,\r
116	// just append current customized device path\r
117	//\r
118	TempNewDevicePath = NewDevicePath;\r
119	NewDevicePath = AppendDevicePathInstance (NewDevicePath, CustomizedConDevicePath);\r
120	SafeFreePool(TempNewDevicePath);\r
121	}\r
122	}\r
123	\r
124	//\r
125	// The attribute for ConInDev, ConOutDev and ErrOutDev does not include NV.\r
126	//\r
127	if (IsNvNeed(ConVarName)) {\r
128	//\r
129	// ConVarName has NV attribute.\r
130	//\r
131	Attributes = EFI_VARIABLE_BOOTSERVICE_ACCESS \| EFI_VARIABLE_RUNTIME_ACCESS \| EFI_VARIABLE_NON_VOLATILE;\r
132	} else {\r
133	//\r
134	// ConVarName does not have NV attribute.\r
135	//\r
136	Attributes = EFI_VARIABLE_BOOTSERVICE_ACCESS \| EFI_VARIABLE_RUNTIME_ACCESS;\r
137	}\r
138	\r
139	//\r
140	// Finally, Update the variable of the default console by NewDevicePath\r
141	//\r
142	gRT->SetVariable (\r
143	ConVarName,\r
144	&gEfiGlobalVariableGuid,\r
145	Attributes,\r
146	GetDevicePathSize (NewDevicePath),\r
147	NewDevicePath\r
148	);\r
149	\r
150	if (VarConsole == NewDevicePath) {\r
151	SafeFreePool(VarConsole);\r
152	} else {\r
153	SafeFreePool(VarConsole);\r
154	SafeFreePool(NewDevicePath);\r
155	}\r
156	\r
157	return EFI_SUCCESS;\r
158	\r
159	}\r
160	\r
161	\r
162	/**\r
163	Connect the console device base on the variable ConVarName, if\r
164	device path of the ConVarName is multi-instance device path, if\r
165	anyone of the instances is connected success, then this function\r
166	will return success.\r
167	\r
168	@param ConVarName Console related variable name, ConIn, ConOut,\r
169	ErrOut.\r
170	\r
171	@retval EFI_NOT_FOUND There is not any console devices connected\r
172	success\r
173	@retval EFI_SUCCESS Success connect any one instance of the console\r
174	device path base on the variable ConVarName.\r
175	\r
176	**/\r
177	EFI_STATUS\r
178	EFIAPI\r
179	BdsLibConnectConsoleVariable (\r
180	IN CHAR16 *ConVarName\r
181	)\r
182	{\r
183	EFI_STATUS Status;\r
184	EFI_DEVICE_PATH_PROTOCOL *StartDevicePath;\r
185	UINTN VariableSize;\r
186	EFI_DEVICE_PATH_PROTOCOL *Instance;\r
187	EFI_DEVICE_PATH_PROTOCOL *Next;\r
188	EFI_DEVICE_PATH_PROTOCOL *CopyOfDevicePath;\r
189	UINTN Size;\r
190	BOOLEAN DeviceExist;\r
191	\r
192	Status = EFI_SUCCESS;\r
193	DeviceExist = FALSE;\r
194	\r
195	//\r
196	// Check if the console variable exist\r
197	//\r
198	StartDevicePath = BdsLibGetVariableAndSize (\r
199	ConVarName,\r
200	&gEfiGlobalVariableGuid,\r
201	&VariableSize\r
202	);\r
203	if (StartDevicePath == NULL) {\r
204	return EFI_UNSUPPORTED;\r
205	}\r
206	\r
207	CopyOfDevicePath = StartDevicePath;\r
208	do {\r
209	//\r
210	// Check every instance of the console variable\r
211	//\r
212	Instance = GetNextDevicePathInstance (&CopyOfDevicePath, &Size);\r
213	Next = Instance;\r
214	while (!IsDevicePathEndType (Next)) {\r
215	Next = NextDevicePathNode (Next);\r
216	}\r
217	\r
218	SetDevicePathEndNode (Next);\r
219	//\r
220	// Check USB1.1 console\r
221	//\r
222	if ((DevicePathType (Instance) == MESSAGING_DEVICE_PATH) &&\r
223	((DevicePathSubType (Instance) == MSG_USB_CLASS_DP)\r
224	\|\| (DevicePathSubType (Instance) == MSG_USB_WWID_DP)\r
225	)) {\r
226	//\r
227	// Check the Usb console in Usb2.0 bus firstly, then Usb1.1 bus\r
228	//\r
229	Status = BdsLibConnectUsbDevByShortFormDP (PCI_CLASSC_PI_EHCI, Instance);\r
230	if (!EFI_ERROR (Status)) {\r
231	DeviceExist = TRUE;\r
232	}\r
233	\r
234	Status = BdsLibConnectUsbDevByShortFormDP (PCI_CLASSC_PI_UHCI, Instance);\r
235	if (!EFI_ERROR (Status)) {\r
236	DeviceExist = TRUE;\r
237	}\r
238	} else {\r
239	//\r
240	// Connect the instance device path\r
241	//\r
242	Status = BdsLibConnectDevicePath (Instance);\r
243	if (EFI_ERROR (Status)) {\r
244	//\r
245	// Delete the instance from the console varialbe\r
246	//\r
247	BdsLibUpdateConsoleVariable (ConVarName, NULL, Instance);\r
248	} else {\r
249	DeviceExist = TRUE;\r
250	}\r
251	}\r
252	SafeFreePool(Instance);\r
253	} while (CopyOfDevicePath != NULL);\r
254	\r
255	gBS->FreePool (StartDevicePath);\r
256	\r
7471b8cd	257	if (!DeviceExist) {\r
897f0eee	258	return EFI_NOT_FOUND;\r
	259	}\r
	260	\r
	261	return EFI_SUCCESS;\r
	262	}\r
	263	\r
	264	\r
	265	/**\r
	266	This function will search every simpletxt devive in current system,\r
	267	and make every simpletxt device as pertantial console device.\r
	268	\r
	269	**/\r
	270	VOID\r
	271	EFIAPI\r
	272	BdsLibConnectAllConsoles (\r
	273	VOID\r
	274	)\r
	275	{\r
	276	UINTN Index;\r
	277	EFI_DEVICE_PATH_PROTOCOL *ConDevicePath;\r
	278	UINTN HandleCount;\r
	279	EFI_HANDLE *HandleBuffer;\r
	280	\r
	281	Index = 0;\r
	282	HandleCount = 0;\r
	283	HandleBuffer = NULL;\r
	284	ConDevicePath = NULL;\r
	285	\r
	286	//\r
	287	// Update all the console varables\r
	288	//\r
	289	gBS->LocateHandleBuffer (\r
	290	ByProtocol,\r
	291	&gEfiSimpleTextInProtocolGuid,\r
	292	NULL,\r
	293	&HandleCount,\r
	294	&HandleBuffer\r
	295	);\r
	296	\r
	297	for (Index = 0; Index < HandleCount; Index++) {\r
	298	gBS->HandleProtocol (\r
	299	HandleBuffer[Index],\r
	300	&gEfiDevicePathProtocolGuid,\r
	301	(VOID **) &ConDevicePath\r
	302	);\r
	303	BdsLibUpdateConsoleVariable (L"ConIn", ConDevicePath, NULL);\r
	304	}\r
	305	\r
	306	SafeFreePool(HandleBuffer);\r
	307	\r
	308	gBS->LocateHandleBuffer (\r
	309	ByProtocol,\r
	310	&gEfiSimpleTextOutProtocolGuid,\r
	311	NULL,\r
	312	&HandleCount,\r
	313	&HandleBuffer\r
	314	);\r
	315	for (Index = 0; Index < HandleCount; Index++) {\r
	316	gBS->HandleProtocol (\r
	317	HandleBuffer[Index],\r
	318	&gEfiDevicePathProtocolGuid,\r
	319	(VOID **) &ConDevicePath\r
	320	);\r
	321	BdsLibUpdateConsoleVariable (L"ConOut", ConDevicePath, NULL);\r
322	BdsLibUpdateConsoleVariable (L"ErrOut", ConDevicePath, NULL);\r
323	}\r
324	\r
325	SafeFreePool(HandleBuffer);\r
326	\r
327	//\r
328	// Connect all console variables\r
329	//\r
330	BdsLibConnectAllDefaultConsoles ();\r
331	\r
332	}\r
333	\r
334	\r
335	/**\r
336	This function will connect console device base on the console\r
337	device variable ConIn, ConOut and ErrOut.\r
338	\r
339	@retval EFI_SUCCESS At least one of the ConIn and ConOut device have\r
340	been connected success.\r
341	@retval EFI_STATUS Return the status of\r
342	BdsLibConnectConsoleVariable ().\r
343	\r
344	**/\r
345	EFI_STATUS\r
346	EFIAPI\r
347	BdsLibConnectAllDefaultConsoles (\r
348	VOID\r
349	)\r
350	{\r
351	EFI_STATUS Status;\r
352	\r
353	//\r
354	// Connect all default console variables\r
355	//\r
356	\r
357	//\r
358	// It seems impossible not to have any ConOut device on platform,\r
359	// so we check the status here.\r
360	//\r
361	Status = BdsLibConnectConsoleVariable (L"ConOut");\r
362	if (EFI_ERROR (Status)) {\r
363	return Status;\r
364	}\r
365	\r
366	//\r
367	// Insert the performance probe for Console Out\r
368	//\r
369	PERF_START (NULL, "ConOut", "BDS", 1);\r
370	PERF_END (NULL, "ConOut", "BDS", 0);\r
371	\r
372	//\r
373	// Because possibly the platform is legacy free, in such case,\r
374	// ConIn devices (Serial Port and PS2 Keyboard ) does not exist,\r
375	// so we need not check the status.\r
376	//\r
377	BdsLibConnectConsoleVariable (L"ConIn");\r
378	\r
379	//\r
380	// The _ModuleEntryPoint err out var is legal.\r
381	//\r
382	BdsLibConnectConsoleVariable (L"ErrOut");\r
383	\r
384	return EFI_SUCCESS;\r
385	\r
386	}\r