+++ /dev/null
-/*++\r
-\r
-Copyright (c) 2006, Intel Corporation \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
-Module Name:\r
-\r
- ConPlatform.c\r
- \r
-Abstract:\r
-\r
---*/\r
-\r
-#include "ConPlatform.h"\r
-\r
-EFI_DRIVER_BINDING_PROTOCOL gConPlatformTextInDriverBinding = {\r
- ConPlatformTextInDriverBindingSupported,\r
- ConPlatformTextInDriverBindingStart,\r
- ConPlatformDriverBindingStop,\r
- 0x10,\r
- NULL,\r
- NULL\r
-};\r
-\r
-EFI_DRIVER_BINDING_PROTOCOL gConPlatformTextOutDriverBinding = {\r
- ConPlatformTextOutDriverBindingSupported,\r
- ConPlatformTextOutDriverBindingStart,\r
- ConPlatformDriverBindingStop,\r
- 0x10,\r
- NULL,\r
- NULL\r
-};\r
-\r
-STATIC\r
-EFI_STATUS\r
-EFIAPI\r
-ConPlatformTextInDriverBindingSupported (\r
- IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
- IN EFI_HANDLE ControllerHandle,\r
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
- )\r
-/*++\r
-\r
-Routine Description:\r
- Supported \r
-\r
-Arguments:\r
- (Standard DriverBinding Protocol Supported() function)\r
-\r
-Returns:\r
-\r
- None\r
-\r
---*/\r
-{\r
- return ConPlatformDriverBindingSupported (\r
- This,\r
- ControllerHandle,\r
- RemainingDevicePath,\r
- &gEfiSimpleTextInProtocolGuid\r
- );\r
-}\r
-\r
-STATIC\r
-EFI_STATUS\r
-EFIAPI\r
-ConPlatformTextOutDriverBindingSupported (\r
- IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
- IN EFI_HANDLE ControllerHandle,\r
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
- )\r
-/*++\r
-\r
-Routine Description:\r
- Supported \r
-\r
-Arguments:\r
- (Standard DriverBinding Protocol Supported() function)\r
-\r
-Returns:\r
-\r
- None\r
-\r
---*/\r
-{\r
- return ConPlatformDriverBindingSupported (\r
- This,\r
- ControllerHandle,\r
- RemainingDevicePath,\r
- &gEfiSimpleTextOutProtocolGuid\r
- );\r
-}\r
-\r
-EFI_STATUS\r
-ConPlatformDriverBindingSupported (\r
- IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
- IN EFI_HANDLE ControllerHandle,\r
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath,\r
- IN EFI_GUID *ProtocolGuid\r
- )\r
-/*++\r
-\r
-Routine Description:\r
- Supported \r
-\r
-Arguments:\r
- (Standard DriverBinding Protocol Supported() function)\r
-\r
-Returns:\r
-\r
- None\r
-\r
---*/\r
-{\r
- EFI_STATUS Status;\r
- VOID *Interface;\r
-\r
- //\r
- // Test to see if this is a physical device by checking to see if\r
- // it has a Device Path Protocol\r
- //\r
- Status = gBS->OpenProtocol (\r
- ControllerHandle,\r
- &gEfiDevicePathProtocolGuid,\r
- NULL,\r
- This->DriverBindingHandle,\r
- ControllerHandle,\r
- EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
- //\r
- // Test to see if this device supports the Simple Text Output Protocol\r
- //\r
- Status = gBS->OpenProtocol (\r
- ControllerHandle,\r
- ProtocolGuid,\r
- (VOID **) &Interface,\r
- This->DriverBindingHandle,\r
- ControllerHandle,\r
- EFI_OPEN_PROTOCOL_BY_DRIVER\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- gBS->CloseProtocol (\r
- ControllerHandle,\r
- ProtocolGuid,\r
- This->DriverBindingHandle,\r
- ControllerHandle\r
- );\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-STATIC\r
-EFI_STATUS\r
-EFIAPI\r
-ConPlatformTextInDriverBindingStart (\r
- IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
- IN EFI_HANDLE ControllerHandle,\r
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
-\r
-Arguments:\r
- (Standard DriverBinding Protocol Start() function)\r
-\r
-Returns:\r
-\r
-\r
---*/\r
-{\r
- EFI_STATUS Status;\r
- EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
- EFI_SIMPLE_TEXT_IN_PROTOCOL *TextIn;\r
-\r
- //\r
- // Get the Device Path Protocol so the environment variables can be updated\r
- //\r
- Status = gBS->OpenProtocol (\r
- ControllerHandle,\r
- &gEfiDevicePathProtocolGuid,\r
- (VOID **) &DevicePath,\r
- This->DriverBindingHandle,\r
- ControllerHandle,\r
- EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
- //\r
- // Open the Simple Input Protocol BY_DRIVER\r
- //\r
- Status = gBS->OpenProtocol (\r
- ControllerHandle,\r
- &gEfiSimpleTextInProtocolGuid,\r
- (VOID **) &TextIn,\r
- This->DriverBindingHandle,\r
- ControllerHandle,\r
- EFI_OPEN_PROTOCOL_BY_DRIVER\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
- //\r
- // Check the device handle, if it is a hot plug device,\r
- // do not put the device path into ConInDev, and install\r
- // gEfiConsoleInDeviceGuid to the device handle directly.\r
- // The policy is, make hot plug device plug in and play immediately.\r
- //\r
- if (IsHotPlugDevice (This->DriverBindingHandle, ControllerHandle)) {\r
- gBS->InstallMultipleProtocolInterfaces (\r
- &ControllerHandle,\r
- &gEfiConsoleInDeviceGuid,\r
- NULL,\r
- NULL\r
- );\r
- } else {\r
- //\r
- // Append the device path to the ConInDev environment variable\r
- //\r
- ConPlatformUpdateDeviceVariable (\r
- VarConsoleInpDev,\r
- DevicePath,\r
- APPEND\r
- );\r
-\r
- //\r
- // If the device path is an instance in the ConIn environment variable,\r
- // then install EfiConsoleInDeviceGuid onto ControllerHandle\r
- //\r
- Status = ConPlatformUpdateDeviceVariable (\r
- VarConsoleInp,\r
- DevicePath,\r
- CHECK\r
- );\r
-\r
- if (!EFI_ERROR (Status)) {\r
- gBS->InstallMultipleProtocolInterfaces (\r
- &ControllerHandle,\r
- &gEfiConsoleInDeviceGuid,\r
- NULL,\r
- NULL\r
- );\r
- } else {\r
- gBS->CloseProtocol (\r
- ControllerHandle,\r
- &gEfiSimpleTextInProtocolGuid,\r
- This->DriverBindingHandle,\r
- ControllerHandle\r
- );\r
- }\r
- }\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-STATIC\r
-EFI_STATUS\r
-EFIAPI\r
-ConPlatformTextOutDriverBindingStart (\r
- IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
- IN EFI_HANDLE ControllerHandle,\r
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
-\r
-Arguments:\r
- (Standard DriverBinding Protocol Start() function)\r
-\r
-Returns:\r
-\r
-\r
---*/\r
-{\r
- EFI_STATUS Status;\r
- EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
- EFI_SIMPLE_TEXT_OUT_PROTOCOL *TextOut;\r
-\r
- BOOLEAN NeedClose;\r
-\r
- NeedClose = TRUE;\r
-\r
- //\r
- // Get the Device Path Protocol so the environment variables can be updated\r
- //\r
- Status = gBS->OpenProtocol (\r
- ControllerHandle,\r
- &gEfiDevicePathProtocolGuid,\r
- (VOID **) &DevicePath,\r
- This->DriverBindingHandle,\r
- ControllerHandle,\r
- EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
- //\r
- // Open the Simple Text Output Protocol BY_DRIVER\r
- //\r
- Status = gBS->OpenProtocol (\r
- ControllerHandle,\r
- &gEfiSimpleTextOutProtocolGuid,\r
- (VOID **) &TextOut,\r
- This->DriverBindingHandle,\r
- ControllerHandle,\r
- EFI_OPEN_PROTOCOL_BY_DRIVER\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
- //\r
- // Check the device handle, if it is a hot plug device,\r
- // do not put the device path into ConOutDev and StdErrDev,\r
- // and install gEfiConsoleOutDeviceGuid to the device handle directly.\r
- // The policy is, make hot plug device plug in and play immediately.\r
- //\r
- if (IsHotPlugDevice (This->DriverBindingHandle, ControllerHandle)) {\r
- gBS->InstallMultipleProtocolInterfaces (\r
- &ControllerHandle,\r
- &gEfiConsoleOutDeviceGuid,\r
- NULL,\r
- NULL\r
- );\r
- } else {\r
- //\r
- // Append the device path to the ConOutDev environment variable\r
- //\r
- ConPlatformUpdateDeviceVariable (\r
- VarConsoleOutDev,\r
- DevicePath,\r
- APPEND\r
- );\r
- //\r
- // Append the device path to the StdErrDev environment variable\r
- //\r
- ConPlatformUpdateDeviceVariable (\r
- VarErrorOutDev,\r
- DevicePath,\r
- APPEND\r
- );\r
-\r
- //\r
- // If the device path is an instance in the ConOut environment variable,\r
- // then install EfiConsoleOutDeviceGuid onto ControllerHandle\r
- //\r
- Status = ConPlatformUpdateDeviceVariable (\r
- VarConsoleOut,\r
- DevicePath,\r
- CHECK\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- NeedClose = FALSE;\r
- Status = gBS->InstallMultipleProtocolInterfaces (\r
- &ControllerHandle,\r
- &gEfiConsoleOutDeviceGuid,\r
- NULL,\r
- NULL\r
- );\r
- }\r
- //\r
- // If the device path is an instance in the StdErr environment variable,\r
- // then install EfiStandardErrorDeviceGuid onto ControllerHandle\r
- //\r
- Status = ConPlatformUpdateDeviceVariable (\r
- VarErrorOut,\r
- DevicePath,\r
- CHECK\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- NeedClose = FALSE;\r
- gBS->InstallMultipleProtocolInterfaces (\r
- &ControllerHandle,\r
- &gEfiStandardErrorDeviceGuid,\r
- NULL,\r
- NULL\r
- );\r
- }\r
-\r
- if (NeedClose) {\r
- gBS->CloseProtocol (\r
- ControllerHandle,\r
- &gEfiSimpleTextOutProtocolGuid,\r
- This->DriverBindingHandle,\r
- ControllerHandle\r
- );\r
- }\r
- }\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-STATIC\r
-EFI_STATUS\r
-EFIAPI\r
-ConPlatformDriverBindingStop (\r
- IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
- IN EFI_HANDLE ControllerHandle,\r
- IN UINTN NumberOfChildren,\r
- IN EFI_HANDLE *ChildHandleBuffer\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
-Arguments:\r
- (Standard DriverBinding Protocol Stop() function)\r
-\r
-Returns:\r
-\r
- None\r
-\r
---*/\r
-{\r
- EFI_STATUS Status;\r
- EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
-\r
- //\r
- // hot plug device is not included into the console associated variables,\r
- // so no need to check variable for those hot plug devices.\r
- //\r
- if (!IsHotPlugDevice (This->DriverBindingHandle, ControllerHandle)) {\r
- //\r
- // Get the Device Path Protocol so the environment variables can be updated\r
- //\r
- Status = gBS->OpenProtocol (\r
- ControllerHandle,\r
- &gEfiDevicePathProtocolGuid,\r
- (VOID **) &DevicePath,\r
- This->DriverBindingHandle,\r
- ControllerHandle,\r
- EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- //\r
- // Remove DevicePath from ConInDev, ConOutDev, and StdErrDev\r
- //\r
- ConPlatformUpdateDeviceVariable (\r
- VarConsoleInpDev,\r
- DevicePath,\r
- DELETE\r
- );\r
- ConPlatformUpdateDeviceVariable (\r
- VarConsoleOutDev,\r
- DevicePath,\r
- DELETE\r
- );\r
- ConPlatformUpdateDeviceVariable (\r
- VarErrorOutDev,\r
- DevicePath,\r
- DELETE\r
- );\r
- }\r
- }\r
- //\r
- // Uninstall the Console Device GUIDs from Controller Handle\r
- //\r
- ConPlatformUnInstallProtocol (\r
- This,\r
- ControllerHandle,\r
- &gEfiConsoleInDeviceGuid\r
- );\r
-\r
- ConPlatformUnInstallProtocol (\r
- This,\r
- ControllerHandle,\r
- &gEfiConsoleOutDeviceGuid\r
- );\r
-\r
- ConPlatformUnInstallProtocol (\r
- This,\r
- ControllerHandle,\r
- &gEfiStandardErrorDeviceGuid\r
- );\r
-\r
- //\r
- // Close the Simple Input and Simple Text Output Protocols\r
- //\r
- gBS->CloseProtocol (\r
- ControllerHandle,\r
- &gEfiSimpleTextInProtocolGuid,\r
- This->DriverBindingHandle,\r
- ControllerHandle\r
- );\r
-\r
- gBS->CloseProtocol (\r
- ControllerHandle,\r
- &gEfiSimpleTextOutProtocolGuid,\r
- This->DriverBindingHandle,\r
- ControllerHandle\r
- );\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-VOID\r
-ConPlatformUnInstallProtocol (\r
- IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
- IN EFI_HANDLE Handle,\r
- IN EFI_GUID *ProtocolGuid\r
- )\r
-{\r
- EFI_STATUS Status;\r
-\r
- Status = gBS->OpenProtocol (\r
- Handle,\r
- ProtocolGuid,\r
- NULL,\r
- This->DriverBindingHandle,\r
- Handle,\r
- EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r
- );\r
-\r
- if (!EFI_ERROR (Status)) {\r
- gBS->UninstallMultipleProtocolInterfaces (\r
- Handle,\r
- ProtocolGuid,\r
- NULL,\r
- NULL\r
- );\r
- }\r
-\r
- return ;\r
-}\r
-\r
-VOID *\r
-ConPlatformGetVariable (\r
- IN CHAR16 *Name\r
- )\r
-/*++\r
-\r
-Routine Description:\r
- Read the EFI variable (Name) and return a dynamically allocated\r
- buffer, and the size of the buffer. On failure return NULL.\r
-\r
-Arguments:\r
- Name - String part of EFI variable name\r
-\r
-Returns:\r
- Dynamically allocated memory that contains a copy of the EFI variable.\r
- Caller is repsoncible freeing the buffer.\r
-\r
- NULL - Variable was not read\r
- \r
---*/\r
-{\r
- EFI_STATUS Status;\r
- VOID *Buffer;\r
- UINTN BufferSize;\r
-\r
- BufferSize = 0;\r
- Buffer = NULL;\r
-\r
- //\r
- // Test to see if the variable exists. If it doesn't reuturn NULL\r
- //\r
- Status = gRT->GetVariable (\r
- Name,\r
- &gEfiGlobalVariableGuid,\r
- NULL,\r
- &BufferSize,\r
- Buffer\r
- );\r
-\r
- if (Status == EFI_BUFFER_TOO_SMALL) {\r
- //\r
- // Allocate the buffer to return\r
- //\r
- Status = gBS->AllocatePool (EfiBootServicesData, BufferSize, &Buffer);\r
- if (EFI_ERROR (Status)) {\r
- return NULL;\r
- }\r
- //\r
- // Read variable into the allocated buffer.\r
- //\r
- Status = gRT->GetVariable (\r
- Name,\r
- &gEfiGlobalVariableGuid,\r
- NULL,\r
- &BufferSize,\r
- Buffer\r
- );\r
- if (EFI_ERROR (Status)) {\r
- gBS->FreePool (Buffer);\r
- Buffer = NULL;\r
- }\r
- }\r
-\r
- return Buffer;\r
-}\r
-\r
-EFI_STATUS\r
-ConPlatformMatchDevicePaths (\r
- IN EFI_DEVICE_PATH_PROTOCOL * Multi,\r
- IN EFI_DEVICE_PATH_PROTOCOL * Single,\r
- IN EFI_DEVICE_PATH_PROTOCOL **NewDevicePath OPTIONAL,\r
- IN BOOLEAN Delete\r
- )\r
-/*++\r
-\r
-Routine Description:\r
- Function compares a device path data structure to that of all the nodes of a\r
- second device path instance.\r
-\r
-Arguments:\r
- Multi - A pointer to a multi-instance device path data structure.\r
-\r
- Single - A pointer to a single-instance device path data structure.\r
- \r
- NewDevicePath - If Delete is TRUE, this parameter must not be null, and it\r
- points to the remaining device path data structure. \r
- (remaining device path = Multi - Single.)\r
- \r
- Delete - If TRUE, means removing Single from Multi.\r
- If FALSE, the routine just check whether Single matches \r
- with any instance in Multi.\r
-\r
-Returns:\r
-\r
- The function returns EFI_SUCCESS if the Single is contained within Multi. \r
- Otherwise, EFI_NOT_FOUND is returned.\r
-\r
---*/\r
-{\r
- EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
- EFI_DEVICE_PATH_PROTOCOL *TempDevicePath1;\r
- EFI_DEVICE_PATH_PROTOCOL *TempDevicePath2;\r
- EFI_DEVICE_PATH_PROTOCOL *DevicePathInst;\r
- UINTN Size;\r
-\r
- //\r
- // The passed in DevicePath should not be NULL\r
- //\r
- if ((!Multi) || (!Single)) {\r
- return EFI_NOT_FOUND;\r
- }\r
- //\r
- // if performing Delete operation, the NewDevicePath must not be NULL.\r
- //\r
- TempDevicePath1 = NULL;\r
-\r
- DevicePath = Multi;\r
- DevicePathInst = GetNextDevicePathInstance (&DevicePath, &Size);\r
-\r
- //\r
- // search for the match of 'Single' in 'Multi'\r
- //\r
- while (DevicePathInst) {\r
- if (CompareMem (Single, DevicePathInst, Size) == 0) {\r
- if (!Delete) {\r
- gBS->FreePool (DevicePathInst);\r
- return EFI_SUCCESS;\r
- }\r
- } else {\r
- if (Delete) {\r
- TempDevicePath2 = AppendDevicePathInstance (\r
- TempDevicePath1,\r
- DevicePathInst\r
- );\r
- gBS->FreePool (TempDevicePath1);\r
- TempDevicePath1 = TempDevicePath2;\r
- }\r
- }\r
-\r
- gBS->FreePool (DevicePathInst);\r
- DevicePathInst = GetNextDevicePathInstance (&DevicePath, &Size);\r
- }\r
-\r
- if (Delete) {\r
- *NewDevicePath = TempDevicePath1;\r
- return EFI_SUCCESS;\r
- }\r
-\r
- return EFI_NOT_FOUND;\r
-}\r
-\r
-EFI_STATUS\r
-ConPlatformUpdateDeviceVariable (\r
- IN CHAR16 *VariableName,\r
- IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,\r
- IN CONPLATFORM_VAR_OPERATION Operation\r
- )\r
-/*++\r
-\r
-Routine Description:\r
- \r
-\r
-Arguments:\r
-\r
-Returns:\r
-\r
- None\r
-\r
---*/\r
-{\r
- EFI_STATUS Status;\r
- EFI_DEVICE_PATH_PROTOCOL *VariableDevicePath;\r
- EFI_DEVICE_PATH_PROTOCOL *NewVariableDevicePath;\r
-\r
- VariableDevicePath = NULL;\r
- NewVariableDevicePath = NULL;\r
-\r
- //\r
- // Get Variable according to variable name.\r
- // The memory for Variable is allocated within ConPlatformGetVarible(),\r
- // it is the caller's responsibility to free the memory before return.\r
- //\r
- VariableDevicePath = ConPlatformGetVariable (VariableName);\r
-\r
- if (Operation != DELETE) {\r
-\r
- Status = ConPlatformMatchDevicePaths (\r
- VariableDevicePath,\r
- DevicePath,\r
- NULL,\r
- FALSE\r
- );\r
-\r
- if ((Operation == CHECK) || (!EFI_ERROR (Status))) {\r
- //\r
- // The device path is already in the variable\r
- //\r
- gBS->FreePool (VariableDevicePath);\r
-\r
- return Status;\r
- }\r
- //\r
- // The device path is not in variable. Append DevicePath to the\r
- // environment variable that is a multi-instance device path.\r
- //\r
- Status = EFI_SUCCESS;\r
- NewVariableDevicePath = AppendDevicePathInstance (\r
- VariableDevicePath,\r
- DevicePath\r
- );\r
- if (NewVariableDevicePath == NULL) {\r
- Status = EFI_OUT_OF_RESOURCES;\r
- }\r
-\r
- } else {\r
- //\r
- // Remove DevicePath from the environment variable that\r
- // is a multi-instance device path.\r
- //\r
- Status = ConPlatformMatchDevicePaths (\r
- VariableDevicePath,\r
- DevicePath,\r
- &NewVariableDevicePath,\r
- TRUE\r
- );\r
- }\r
-\r
- gBS->FreePool (VariableDevicePath);\r
-\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- Status = gRT->SetVariable (\r
- VariableName,\r
- &gEfiGlobalVariableGuid,\r
- EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r
- GetDevicePathSize (NewVariableDevicePath),\r
- NewVariableDevicePath\r
- );\r
-\r
- gBS->FreePool (NewVariableDevicePath);\r
-\r
- return Status;\r
-}\r
-\r
-BOOLEAN\r
-IsHotPlugDevice (\r
- EFI_HANDLE DriverBindingHandle,\r
- EFI_HANDLE ControllerHandle\r
- )\r
-{\r
- EFI_STATUS Status;\r
-\r
- //\r
- // HotPlugDeviceGuid indicates ControllerHandle stands for a hot plug device.\r
- //\r
- Status = gBS->OpenProtocol (\r
- ControllerHandle,\r
- &gEfiHotPlugDeviceGuid,\r
- NULL,\r
- DriverBindingHandle,\r
- ControllerHandle,\r
- EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return FALSE;\r
- }\r
-\r
- return TRUE;\r
-}\r
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