[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
/**\r
  Check if we need to save the EFI variable with "ConVarName" as name\r
  as NV type\r
\r
  @param ConVarName The name of the EFI variable.\r
\r
  @retval TRUE    Set the EFI variabel as NV type.\r
  @retval FALSE   EFI variabel as NV type can be set NonNV.\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 != L'\0') {\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
      if (TempNewDevicePath != NULL) {\r
        FreePool(TempNewDevicePath);\r
      }\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
    if (VarConsole != NULL) {\r
      FreePool(VarConsole);\r
    }\r
  } else {\r
    if (VarConsole != NULL) {\r
      FreePool(VarConsole);\r
    }\r
    if (NewDevicePath) {\r
      FreePool(NewDevicePath);\r
    }\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
    FreePool(Instance);\r
  } while (CopyOfDevicePath != NULL);\r
\r
  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
  if (HandleBuffer != NULL) {\r
    FreePool(HandleBuffer);\r
    HandleBuffer = NULL;\r
  }\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
  if (HandleBuffer != NULL) {\r
    FreePool(HandleBuffer);\r
  }\r
\r
  //\r
  // Connect all console variables\r
  //\r
  BdsLibConnectAllDefaultConsoles ();\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
11ef23f9	17	/**\r
	18	Check if we need to save the EFI variable with "ConVarName" as name\r
	19	as NV type\r
	20	\r
	21	@param ConVarName The name of the EFI variable.\r
	22	\r
	23	@retval TRUE Set the EFI variabel as NV type.\r
	24	@retval FALSE EFI variabel as NV type can be set NonNV.\r
	25	**/\r
897f0eee	26	BOOLEAN\r
	27	IsNvNeed (\r
	28	IN CHAR16 *ConVarName\r
	29	)\r
	30	{\r
	31	CHAR16 *Ptr;\r
	32	\r
	33	Ptr = ConVarName;\r
	34	\r
	35	//\r
	36	// If the variable includes "Dev" at last, we consider\r
	37	// it does not support NV attribute.\r
	38	//\r
11ef23f9	39	while (*Ptr != L'\0') {\r
897f0eee	40	Ptr++;\r
	41	}\r
	42	\r
ec8cd35c	43	if (((Ptr - 3) == 'D') && ((Ptr - 2) == 'e') && (*(Ptr - 1) == 'v')) {\r
897f0eee	44	return FALSE;\r
	45	} else {\r
	46	return TRUE;\r
	47	}\r
	48	}\r
	49	\r
	50	\r
	51	/**\r
	52	This function update console variable based on ConVarName, it can\r
	53	add or remove one specific console device path from the variable\r
	54	\r
	55	@param ConVarName Console related variable name, ConIn, ConOut,\r
	56	ErrOut.\r
	57	@param CustomizedConDevicePath The console device path which will be added to\r
	58	the console variable ConVarName, this parameter\r
	59	can not be multi-instance.\r
	60	@param ExclusiveDevicePath The console device path which will be removed\r
	61	from the console variable ConVarName, this\r
	62	parameter can not be multi-instance.\r
	63	\r
	64	@retval EFI_UNSUPPORTED Add or remove the same device path.\r
	65	@retval EFI_SUCCESS Success add or remove the device path from the\r
	66	console variable.\r
	67	\r
	68	**/\r
	69	EFI_STATUS\r
	70	EFIAPI\r
	71	BdsLibUpdateConsoleVariable (\r
	72	IN CHAR16 *ConVarName,\r
	73	IN EFI_DEVICE_PATH_PROTOCOL *CustomizedConDevicePath,\r
	74	IN EFI_DEVICE_PATH_PROTOCOL *ExclusiveDevicePath\r
	75	)\r
	76	{\r
	77	EFI_DEVICE_PATH_PROTOCOL *VarConsole;\r
	78	UINTN DevicePathSize;\r
	79	EFI_DEVICE_PATH_PROTOCOL *NewDevicePath;\r
	80	EFI_DEVICE_PATH_PROTOCOL *TempNewDevicePath;\r
	81	UINT32 Attributes;\r
	82	\r
	83	VarConsole = NULL;\r
	84	DevicePathSize = 0;\r
	85	\r
	86	//\r
	87	// Notes: check the device path point, here should check\r
	88	// with compare memory\r
	89	//\r
	90	if (CustomizedConDevicePath == ExclusiveDevicePath) {\r
	91	return EFI_UNSUPPORTED;\r
	92	}\r
	93	//\r
	94	// Delete the ExclusiveDevicePath from current default console\r
	95	//\r
	96	VarConsole = BdsLibGetVariableAndSize (\r
	97	ConVarName,\r
	98	&gEfiGlobalVariableGuid,\r
	99	&DevicePathSize\r
	100	);\r
	101	\r
	102	//\r
	103	// Initialize NewDevicePath\r
	104	//\r
	105	NewDevicePath = VarConsole;\r
	106	\r
	107	//\r
108	// If ExclusiveDevicePath is even the part of the instance in VarConsole, delete it.\r
109	// In the end, NewDevicePath is the final device path.\r
110	//\r
111	if (ExclusiveDevicePath != NULL && VarConsole != NULL) {\r
112	NewDevicePath = BdsLibDelPartMatchInstance (VarConsole, ExclusiveDevicePath);\r
113	}\r
114	//\r
115	// Try to append customized device path to NewDevicePath.\r
116	//\r
117	if (CustomizedConDevicePath != NULL) {\r
118	if (!BdsLibMatchDevicePaths (NewDevicePath, CustomizedConDevicePath)) {\r
119	//\r
120	// Check if there is part of CustomizedConDevicePath in NewDevicePath, delete it.\r
121	//\r
122	NewDevicePath = BdsLibDelPartMatchInstance (NewDevicePath, CustomizedConDevicePath);\r
123	//\r
124	// In the first check, the default console variable will be _ModuleEntryPoint,\r
125	// just append current customized device path\r
126	//\r
127	TempNewDevicePath = NewDevicePath;\r
128	NewDevicePath = AppendDevicePathInstance (NewDevicePath, CustomizedConDevicePath);\r
676df92c	129	if (TempNewDevicePath != NULL) {\r
	130	FreePool(TempNewDevicePath);\r
	131	}\r
897f0eee	132	}\r
	133	}\r
	134	\r
	135	//\r
	136	// The attribute for ConInDev, ConOutDev and ErrOutDev does not include NV.\r
	137	//\r
	138	if (IsNvNeed(ConVarName)) {\r
	139	//\r
	140	// ConVarName has NV attribute.\r
	141	//\r
	142	Attributes = EFI_VARIABLE_BOOTSERVICE_ACCESS \| EFI_VARIABLE_RUNTIME_ACCESS \| EFI_VARIABLE_NON_VOLATILE;\r
	143	} else {\r
	144	//\r
	145	// ConVarName does not have NV attribute.\r
	146	//\r
	147	Attributes = EFI_VARIABLE_BOOTSERVICE_ACCESS \| EFI_VARIABLE_RUNTIME_ACCESS;\r
	148	}\r
	149	\r
	150	//\r
	151	// Finally, Update the variable of the default console by NewDevicePath\r
	152	//\r
	153	gRT->SetVariable (\r
	154	ConVarName,\r
	155	&gEfiGlobalVariableGuid,\r
	156	Attributes,\r
	157	GetDevicePathSize (NewDevicePath),\r
	158	NewDevicePath\r
	159	);\r
	160	\r
	161	if (VarConsole == NewDevicePath) {\r
676df92c	162	if (VarConsole != NULL) {\r
	163	FreePool(VarConsole);\r
	164	}\r
897f0eee	165	} else {\r
676df92c	166	if (VarConsole != NULL) {\r
	167	FreePool(VarConsole);\r
	168	}\r
	169	if (NewDevicePath) {\r
	170	FreePool(NewDevicePath);\r
	171	}\r
897f0eee	172	}\r
	173	\r
	174	return EFI_SUCCESS;\r
	175	\r
	176	}\r
	177	\r
	178	\r
	179	/**\r
	180	Connect the console device base on the variable ConVarName, if\r
	181	device path of the ConVarName is multi-instance device path, if\r
	182	anyone of the instances is connected success, then this function\r
	183	will return success.\r
	184	\r
	185	@param ConVarName Console related variable name, ConIn, ConOut,\r
	186	ErrOut.\r
	187	\r
	188	@retval EFI_NOT_FOUND There is not any console devices connected\r
	189	success\r
	190	@retval EFI_SUCCESS Success connect any one instance of the console\r
	191	device path base on the variable ConVarName.\r
	192	\r
	193	**/\r
	194	EFI_STATUS\r
	195	EFIAPI\r
	196	BdsLibConnectConsoleVariable (\r
	197	IN CHAR16 *ConVarName\r
	198	)\r
	199	{\r
	200	EFI_STATUS Status;\r
	201	EFI_DEVICE_PATH_PROTOCOL *StartDevicePath;\r
	202	UINTN VariableSize;\r
	203	EFI_DEVICE_PATH_PROTOCOL *Instance;\r
	204	EFI_DEVICE_PATH_PROTOCOL *Next;\r
	205	EFI_DEVICE_PATH_PROTOCOL *CopyOfDevicePath;\r
	206	UINTN Size;\r
	207	BOOLEAN DeviceExist;\r
	208	\r
	209	Status = EFI_SUCCESS;\r
	210	DeviceExist = FALSE;\r
	211	\r
	212	//\r
	213	// Check if the console variable exist\r
	214	//\r
	215	StartDevicePath = BdsLibGetVariableAndSize (\r
	216	ConVarName,\r
	217	&gEfiGlobalVariableGuid,\r
	218	&VariableSize\r
	219	);\r
	220	if (StartDevicePath == NULL) {\r
	221	return EFI_UNSUPPORTED;\r
	222	}\r
	223	\r
	224	CopyOfDevicePath = StartDevicePath;\r
	225	do {\r
	226	//\r
	227	// Check every instance of the console variable\r
	228	//\r
	229	Instance = GetNextDevicePathInstance (&CopyOfDevicePath, &Size);\r
	230	Next = Instance;\r
	231	while (!IsDevicePathEndType (Next)) {\r
	232	Next = NextDevicePathNode (Next);\r
	233	}\r
	234	\r
	235	SetDevicePathEndNode (Next);\r
236	//\r
237	// Check USB1.1 console\r
238	//\r
239	if ((DevicePathType (Instance) == MESSAGING_DEVICE_PATH) &&\r
240	((DevicePathSubType (Instance) == MSG_USB_CLASS_DP)\r
241	\|\| (DevicePathSubType (Instance) == MSG_USB_WWID_DP)\r
242	)) {\r
243	//\r
244	// Check the Usb console in Usb2.0 bus firstly, then Usb1.1 bus\r
245	//\r
246	Status = BdsLibConnectUsbDevByShortFormDP (PCI_CLASSC_PI_EHCI, Instance);\r
247	if (!EFI_ERROR (Status)) {\r
248	DeviceExist = TRUE;\r
249	}\r
250	\r
251	Status = BdsLibConnectUsbDevByShortFormDP (PCI_CLASSC_PI_UHCI, Instance);\r
252	if (!EFI_ERROR (Status)) {\r
253	DeviceExist = TRUE;\r
254	}\r
255	} else {\r
256	//\r
257	// Connect the instance device path\r
258	//\r
259	Status = BdsLibConnectDevicePath (Instance);\r
260	if (EFI_ERROR (Status)) {\r
261	//\r
262	// Delete the instance from the console varialbe\r
263	//\r
264	BdsLibUpdateConsoleVariable (ConVarName, NULL, Instance);\r
265	} else {\r
266	DeviceExist = TRUE;\r
267	}\r
268	}\r
676df92c	269	FreePool(Instance);\r
897f0eee	270	} while (CopyOfDevicePath != NULL);\r
897f0eee	271	\r
676df92c	272	FreePool (StartDevicePath);\r
897f0eee	273	\r
7471b8cd	274	if (!DeviceExist) {\r
897f0eee	275	return EFI_NOT_FOUND;\r
	276	}\r
	277	\r
	278	return EFI_SUCCESS;\r
	279	}\r
	280	\r
	281	\r
	282	/**\r
	283	This function will search every simpletxt devive in current system,\r
	284	and make every simpletxt device as pertantial console device.\r
	285	\r
	286	**/\r
	287	VOID\r
	288	EFIAPI\r
	289	BdsLibConnectAllConsoles (\r
	290	VOID\r
	291	)\r
	292	{\r
	293	UINTN Index;\r
	294	EFI_DEVICE_PATH_PROTOCOL *ConDevicePath;\r
	295	UINTN HandleCount;\r
	296	EFI_HANDLE *HandleBuffer;\r
	297	\r
	298	Index = 0;\r
	299	HandleCount = 0;\r
	300	HandleBuffer = NULL;\r
	301	ConDevicePath = NULL;\r
	302	\r
	303	//\r
	304	// Update all the console varables\r
	305	//\r
	306	gBS->LocateHandleBuffer (\r
	307	ByProtocol,\r
	308	&gEfiSimpleTextInProtocolGuid,\r
	309	NULL,\r
	310	&HandleCount,\r
	311	&HandleBuffer\r
	312	);\r
	313	\r
	314	for (Index = 0; Index < HandleCount; Index++) {\r
	315	gBS->HandleProtocol (\r
	316	HandleBuffer[Index],\r
	317	&gEfiDevicePathProtocolGuid,\r
	318	(VOID **) &ConDevicePath\r
	319	);\r
	320	BdsLibUpdateConsoleVariable (L"ConIn", ConDevicePath, NULL);\r
	321	}\r
	322	\r
676df92c	323	if (HandleBuffer != NULL) {\r
	324	FreePool(HandleBuffer);\r
	325	HandleBuffer = NULL;\r
	326	}\r
897f0eee	327	\r
	328	gBS->LocateHandleBuffer (\r
	329	ByProtocol,\r
	330	&gEfiSimpleTextOutProtocolGuid,\r
	331	NULL,\r
	332	&HandleCount,\r
	333	&HandleBuffer\r
	334	);\r
	335	for (Index = 0; Index < HandleCount; Index++) {\r
	336	gBS->HandleProtocol (\r
	337	HandleBuffer[Index],\r
	338	&gEfiDevicePathProtocolGuid,\r
	339	(VOID **) &ConDevicePath\r
	340	);\r
	341	BdsLibUpdateConsoleVariable (L"ConOut", ConDevicePath, NULL);\r
	342	BdsLibUpdateConsoleVariable (L"ErrOut", ConDevicePath, NULL);\r
	343	}\r
	344	\r
676df92c	345	if (HandleBuffer != NULL) {\r
	346	FreePool(HandleBuffer);\r
	347	}\r
897f0eee	348	\r
	349	//\r
	350	// Connect all console variables\r
	351	//\r
	352	BdsLibConnectAllDefaultConsoles ();\r
	353	\r
	354	}\r
	355	\r
897f0eee	356	/**\r
	357	This function will connect console device base on the console\r
	358	device variable ConIn, ConOut and ErrOut.\r
	359	\r
	360	@retval EFI_SUCCESS At least one of the ConIn and ConOut device have\r
	361	been connected success.\r
	362	@retval EFI_STATUS Return the status of\r
	363	BdsLibConnectConsoleVariable ().\r
	364	\r
	365	**/\r
	366	EFI_STATUS\r
	367	EFIAPI\r
	368	BdsLibConnectAllDefaultConsoles (\r
	369	VOID\r
	370	)\r
	371	{\r
	372	EFI_STATUS Status;\r
	373	\r
	374	//\r
	375	// Connect all default console variables\r
	376	//\r
	377	\r
	378	//\r
	379	// It seems impossible not to have any ConOut device on platform,\r
	380	// so we check the status here.\r
	381	//\r
	382	Status = BdsLibConnectConsoleVariable (L"ConOut");\r
	383	if (EFI_ERROR (Status)) {\r
	384	return Status;\r
	385	}\r
	386	\r
	387	//\r
	388	// Insert the performance probe for Console Out\r
	389	//\r
	390	PERF_START (NULL, "ConOut", "BDS", 1);\r
	391	PERF_END (NULL, "ConOut", "BDS", 0);\r
	392	\r
	393	//\r
	394	// Because possibly the platform is legacy free, in such case,\r
	395	// ConIn devices (Serial Port and PS2 Keyboard ) does not exist,\r
	396	// so we need not check the status.\r
	397	//\r
	398	BdsLibConnectConsoleVariable (L"ConIn");\r
	399	\r
	400	//\r
	401	// The _ModuleEntryPoint err out var is legal.\r
	402	//\r
	403	BdsLibConnectConsoleVariable (L"ErrOut");\r
	404	\r
	405	return EFI_SUCCESS;\r
	406	\r
	407	}\r