/** @file\r
- Functions implementation for Bus Specific Driver Override protoocl.\r
+ Functions implementation for Bus Specific Driver Override protocol.\r
\r
-Copyright (c) 2006 - 2009, 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
+Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>\r
+SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
PciIoDevice->PciDriverOverride.GetDriver = GetDriver;\r
}\r
\r
+/**\r
+ Find the image handle whose path equals to ImagePath.\r
+\r
+ @param ImagePath Image path.\r
+\r
+ @return Image handle.\r
+**/\r
+EFI_HANDLE\r
+LocateImageHandle (\r
+ IN EFI_DEVICE_PATH_PROTOCOL *ImagePath\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_HANDLE *Handles;\r
+ UINTN Index;\r
+ UINTN HandleNum;\r
+ EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
+ UINTN ImagePathSize;\r
+ EFI_HANDLE ImageHandle;\r
+\r
+ Status = gBS->LocateHandleBuffer (\r
+ ByProtocol,\r
+ &gEfiLoadedImageDevicePathProtocolGuid,\r
+ NULL,\r
+ &HandleNum,\r
+ &Handles\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ return NULL;\r
+ }\r
+\r
+ ImageHandle = NULL;\r
+ ImagePathSize = GetDevicePathSize (ImagePath);\r
+\r
+ for (Index = 0; Index < HandleNum; Index++) {\r
+ Status = gBS->HandleProtocol (Handles[Index], &gEfiLoadedImageDevicePathProtocolGuid, (VOID **) &DevicePath);\r
+ if (EFI_ERROR (Status)) {\r
+ continue;\r
+ }\r
+ if ((ImagePathSize == GetDevicePathSize (DevicePath)) &&\r
+ (CompareMem (ImagePath, DevicePath, ImagePathSize) == 0)\r
+ ) {\r
+ ImageHandle = Handles[Index];\r
+ break;\r
+ }\r
+ }\r
+\r
+ FreePool (Handles);\r
+ return ImageHandle;\r
+}\r
\r
/**\r
Uses a bus specific algorithm to retrieve a driver image handle for a controller.\r
)\r
{\r
PCI_IO_DEVICE *PciIoDevice;\r
- LIST_ENTRY *CurrentLink;\r
- PCI_DRIVER_OVERRIDE_LIST *Node;\r
+ LIST_ENTRY *Link;\r
+ PCI_DRIVER_OVERRIDE_LIST *Override;\r
+ BOOLEAN ReturnNext;\r
\r
+ Override = NULL;\r
PciIoDevice = PCI_IO_DEVICE_FROM_PCI_DRIVER_OVERRIDE_THIS (This);\r
+ ReturnNext = (BOOLEAN) (*DriverImageHandle == NULL);\r
+ for ( Link = GetFirstNode (&PciIoDevice->OptionRomDriverList)\r
+ ; !IsNull (&PciIoDevice->OptionRomDriverList, Link)\r
+ ; Link = GetNextNode (&PciIoDevice->OptionRomDriverList, Link)\r
+ ) {\r
\r
- CurrentLink = PciIoDevice->OptionRomDriverList.ForwardLink;\r
-\r
- while (CurrentLink != NULL && CurrentLink != &PciIoDevice->OptionRomDriverList) {\r
-\r
- Node = DRIVER_OVERRIDE_FROM_LINK (CurrentLink);\r
+ Override = DRIVER_OVERRIDE_FROM_LINK (Link);\r
\r
- if (*DriverImageHandle == NULL) {\r
-\r
- *DriverImageHandle = Node->DriverImageHandle;\r
- return EFI_SUCCESS;\r
- }\r
-\r
- if (*DriverImageHandle == Node->DriverImageHandle) {\r
-\r
- if (CurrentLink->ForwardLink == &PciIoDevice->OptionRomDriverList ||\r
- CurrentLink->ForwardLink == NULL) {\r
- return EFI_NOT_FOUND;\r
+ if (ReturnNext) {\r
+ if (Override->DriverImageHandle == NULL) {\r
+ Override->DriverImageHandle = LocateImageHandle (Override->DriverImagePath);\r
}\r
\r
- //\r
- // Get next node\r
- //\r
- Node = DRIVER_OVERRIDE_FROM_LINK (CurrentLink->ForwardLink);\r
- *DriverImageHandle = Node->DriverImageHandle;\r
- return EFI_SUCCESS;\r
+ if (Override->DriverImageHandle == NULL) {\r
+ //\r
+ // The Option ROM identified by Override->DriverImagePath is not loaded.\r
+ //\r
+ continue;\r
+ } else {\r
+ *DriverImageHandle = Override->DriverImageHandle;\r
+ return EFI_SUCCESS;\r
+ }\r
}\r
\r
- CurrentLink = CurrentLink->ForwardLink;\r
+ if (*DriverImageHandle == Override->DriverImageHandle) {\r
+ ReturnNext = TRUE;\r
+ }\r
}\r
\r
- return EFI_INVALID_PARAMETER;\r
+ ASSERT (IsNull (&PciIoDevice->OptionRomDriverList, Link));\r
+ //\r
+ // ReturnNext indicates a handle match happens.\r
+ // If all nodes are checked without handle match happening,\r
+ // the DriverImageHandle should be a invalid handle.\r
+ //\r
+ if (ReturnNext) {\r
+ return EFI_NOT_FOUND;\r
+ } else {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
}\r
\r
/**\r
Add an overriding driver image.\r
\r
@param PciIoDevice Instance of PciIo device.\r
- @param DriverImageHandle new added driver image.\r
+ @param DriverImageHandle Image handle of newly added driver image.\r
+ @param DriverImagePath Device path of newly added driver image.\r
\r
@retval EFI_SUCCESS Successfully added driver.\r
@retval EFI_OUT_OF_RESOURCES No memory resource for new driver instance.\r
**/\r
EFI_STATUS\r
AddDriver (\r
- IN PCI_IO_DEVICE *PciIoDevice,\r
- IN EFI_HANDLE DriverImageHandle\r
+ IN PCI_IO_DEVICE *PciIoDevice,\r
+ IN EFI_HANDLE DriverImageHandle,\r
+ IN EFI_DEVICE_PATH_PROTOCOL *DriverImagePath\r
)\r
{\r
- EFI_STATUS Status;\r
- EFI_LOADED_IMAGE_PROTOCOL *LoadedImage;\r
- PE_COFF_LOADER_IMAGE_CONTEXT ImageContext;\r
PCI_DRIVER_OVERRIDE_LIST *Node;\r
\r
- Status = gBS->HandleProtocol (DriverImageHandle, &gEfiLoadedImageProtocolGuid, (VOID **) &LoadedImage);\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
+ //\r
+ // Caller should pass in either Image Handle or Image Path, but not both.\r
+ //\r
+ ASSERT ((DriverImageHandle == NULL) || (DriverImagePath == NULL));\r
\r
- Node = AllocatePool (sizeof (PCI_DRIVER_OVERRIDE_LIST));\r
+ Node = AllocateZeroPool (sizeof (PCI_DRIVER_OVERRIDE_LIST));\r
if (Node == NULL) {\r
return EFI_OUT_OF_RESOURCES;\r
}\r
\r
Node->Signature = DRIVER_OVERRIDE_SIGNATURE;\r
Node->DriverImageHandle = DriverImageHandle;\r
+ Node->DriverImagePath = DuplicateDevicePath (DriverImagePath);\r
\r
- InsertTailList (&PciIoDevice->OptionRomDriverList, &(Node->Link));\r
+ InsertTailList (&PciIoDevice->OptionRomDriverList, &Node->Link);\r
\r
PciIoDevice->BusOverride = TRUE;\r
-\r
- ImageContext.Handle = LoadedImage->ImageBase;\r
- ImageContext.ImageRead = PeCoffLoaderImageReadFromMemory;\r
-\r
- //\r
- // Get information about the image\r
- //\r
- PeCoffLoaderGetImageInfo (&ImageContext);\r
-\r
return EFI_SUCCESS;\r
}\r
\r
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