return Status;\r
}\r
\r
+/**\r
+ Update the parameters of a TFTP boot option\r
+\r
+ The function asks sequentially to update the IPv4 parameters as well as the boot file path,\r
+ providing the previously set value if any.\r
+\r
+ @param[in] OldDevicePath Current complete device path of the Tftp boot option.\r
+ This has to be a valid complete Tftp boot option path.\r
+ By complete, we mean that it is not only the Tftp\r
+ specific end part built by the\r
+ "BdsLoadOptionTftpCreateDevicePath()" function.\r
+ This path is handled as read only.\r
+ @param[in] FileName Description of the file the path is asked for\r
+ @param[out] NewDevicePath Pointer to the new complete device path.\r
+\r
+ @retval EFI_SUCCESS Update completed\r
+ @retval EFI_ABORTED Update aborted by the user\r
+ @retval EFI_OUT_OF_RESOURCES Fail to perform the update due to lack of resource\r
+**/\r
EFI_STATUS\r
BdsLoadOptionTftpUpdateDevicePath (\r
- IN EFI_DEVICE_PATH *OldDevicePath,\r
- IN CHAR16* FileName,\r
- OUT EFI_DEVICE_PATH_PROTOCOL **NewDevicePath\r
+ IN EFI_DEVICE_PATH *OldDevicePath,\r
+ IN CHAR16 *FileName,\r
+ OUT EFI_DEVICE_PATH_PROTOCOL **NewDevicePath\r
)\r
{\r
- ASSERT (0);\r
- return EFI_UNSUPPORTED;\r
+ EFI_STATUS Status;\r
+ EFI_DEVICE_PATH *DevicePath;\r
+ EFI_DEVICE_PATH *DevicePathNode;\r
+ UINT8 *Ipv4NodePtr;\r
+ IPv4_DEVICE_PATH Ipv4Node;\r
+ BOOLEAN IsDHCP;\r
+ EFI_IP_ADDRESS OldIp;\r
+ EFI_IP_ADDRESS LocalIp;\r
+ EFI_IP_ADDRESS RemoteIp;\r
+ UINT8 *FileNodePtr;\r
+ CHAR16 BootFilePath[BOOT_DEVICE_FILEPATH_MAX];\r
+ UINTN PathSize;\r
+ UINTN BootFilePathSize;\r
+ FILEPATH_DEVICE_PATH *NewFilePathNode;\r
+\r
+ Ipv4NodePtr = NULL;\r
+\r
+ //\r
+ // Make a copy of the complete device path that is made of :\r
+ // the device path of the device that support the Simple Network protocol\r
+ // followed by an IPv4 node (type IPv4_DEVICE_PATH),\r
+ // followed by a file path node (type FILEPATH_DEVICE_PATH) and ended up\r
+ // by an end node. The IPv6 case is not handled yet.\r
+ //\r
+\r
+ DevicePath = DuplicateDevicePath (OldDevicePath);\r
+ if (DevicePath == NULL) {\r
+ Status = EFI_OUT_OF_RESOURCES;\r
+ goto ErrorExit;\r
+ }\r
+\r
+ //\r
+ // Because of the check done by "BdsLoadOptionTftpIsSupported()" prior to the\r
+ // call to this function, we know that the device path ends with an IPv4 node\r
+ // followed by a file path node and finally an end node. To get the address of\r
+ // the last IPv4 node, we loop over the whole device path, noting down the\r
+ // address of each encountered IPv4 node.\r
+ //\r
+\r
+ for (DevicePathNode = DevicePath;\r
+ !IsDevicePathEnd (DevicePathNode);\r
+ DevicePathNode = NextDevicePathNode (DevicePathNode))\r
+ {\r
+ if (IS_DEVICE_PATH_NODE (DevicePathNode, MESSAGING_DEVICE_PATH, MSG_IPv4_DP)) {\r
+ Ipv4NodePtr = (UINT8*)DevicePathNode;\r
+ }\r
+ }\r
+\r
+ // Copy for alignment of the IPv4 node data\r
+ CopyMem (&Ipv4Node, Ipv4NodePtr, sizeof (IPv4_DEVICE_PATH));\r
+\r
+ Print (L"Get the IP address from DHCP: ");\r
+ Status = GetHIInputBoolean (&IsDHCP);\r
+ if (EFI_ERROR (Status)) {\r
+ goto ErrorExit;\r
+ }\r
+\r
+ if (!IsDHCP) {\r
+ Print (L"Local static IP address: ");\r
+ if (Ipv4Node.StaticIpAddress) {\r
+ // Copy local IPv4 address into IPv4 or IPv6 union\r
+ CopyMem (&OldIp.v4, &Ipv4Node.LocalIpAddress, sizeof (EFI_IPv4_ADDRESS));\r
+\r
+ Status = EditHIInputIP (&OldIp, &LocalIp);\r
+ } else {\r
+ Status = GetHIInputIP (&LocalIp);\r
+ }\r
+ if (EFI_ERROR (Status)) {\r
+ goto ErrorExit;\r
+ }\r
+ }\r
+\r
+ Print (L"TFTP server IP address: ");\r
+ // Copy remote IPv4 address into IPv4 or IPv6 union\r
+ CopyMem (&OldIp.v4, &Ipv4Node.RemoteIpAddress, sizeof (EFI_IPv4_ADDRESS));\r
+\r
+ Status = EditHIInputIP (&OldIp, &RemoteIp);\r
+ if (EFI_ERROR (Status)) {\r
+ goto ErrorExit;\r
+ }\r
+\r
+ // Get the path of the boot file and its size in number of bytes\r
+ FileNodePtr = Ipv4NodePtr + sizeof (IPv4_DEVICE_PATH);\r
+ BootFilePathSize = DevicePathNodeLength (FileNodePtr) - SIZE_OF_FILEPATH_DEVICE_PATH;\r
+\r
+ //\r
+ // Ask for update of the boot file path\r
+ //\r
+ do {\r
+ // Copy for 2-byte alignment of the Unicode string\r
+ CopyMem (\r
+ BootFilePath, FileNodePtr + SIZE_OF_FILEPATH_DEVICE_PATH,\r
+ MIN (BootFilePathSize, BOOT_DEVICE_FILEPATH_MAX)\r
+ );\r
+ BootFilePath[BOOT_DEVICE_FILEPATH_MAX - 1] = L'\0';\r
+\r
+ Print (L"File path of the %s: ", FileName);\r
+ Status = EditHIInputStr (BootFilePath, BOOT_DEVICE_FILEPATH_MAX);\r
+ if (EFI_ERROR (Status)) {\r
+ goto ErrorExit;\r
+ }\r
+ PathSize = StrSize (BootFilePath);\r
+ if (PathSize > 2) {\r
+ break;\r
+ }\r
+ // Empty string, give the user another try\r
+ Print (L"Empty string - Invalid path\n");\r
+ } while (PathSize <= 2) ;\r
+\r
+ //\r
+ // Update the IPv4 node. IPv6 case not handled yet.\r
+ //\r
+ if (IsDHCP == TRUE) {\r
+ Ipv4Node.StaticIpAddress = FALSE;\r
+ } else {\r
+ Ipv4Node.StaticIpAddress = TRUE;\r
+ }\r
+ CopyMem (&Ipv4Node.LocalIpAddress, &LocalIp.v4, sizeof (EFI_IPv4_ADDRESS));\r
+ CopyMem (&Ipv4Node.RemoteIpAddress, &RemoteIp.v4, sizeof (EFI_IPv4_ADDRESS));\r
+ CopyMem (Ipv4NodePtr, &Ipv4Node, sizeof (IPv4_DEVICE_PATH));\r
+\r
+ //\r
+ // Create the new file path node\r
+ //\r
+ NewFilePathNode = (FILEPATH_DEVICE_PATH*)AllocatePool (\r
+ SIZE_OF_FILEPATH_DEVICE_PATH +\r
+ PathSize\r
+ );\r
+ NewFilePathNode->Header.Type = MEDIA_DEVICE_PATH;\r
+ NewFilePathNode->Header.SubType = MEDIA_FILEPATH_DP;\r
+ SetDevicePathNodeLength (\r
+ NewFilePathNode,\r
+ SIZE_OF_FILEPATH_DEVICE_PATH + PathSize\r
+ );\r
+ CopyMem (NewFilePathNode->PathName, BootFilePath, PathSize);\r
+\r
+ //\r
+ // Generate the new Device Path by replacing the file path node at address\r
+ // "FileNodePtr" by the new one "NewFilePathNode" and return its address.\r
+ //\r
+ SetDevicePathEndNode (FileNodePtr);\r
+ *NewDevicePath = AppendDevicePathNode (\r
+ DevicePath,\r
+ (CONST EFI_DEVICE_PATH_PROTOCOL*)NewFilePathNode\r
+ );\r
+\r
+ErrorExit:\r
+ if (DevicePath != NULL) {\r
+ FreePool (DevicePath) ;\r
+ }\r
+\r
+ return Status;\r
}\r
\r
BOOLEAN\r
projects / mirror_edk2.git / commitdiff