projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| adbcbf8f | 1 | /** @file\r |
| 2 | Partition driver that produces logical BlockIo devices from a physical\r | |
| 3 | BlockIo device. The logical BlockIo devices are based on the format\r | |
| 4 | of the raw block devices media. Currently "El Torito CD-ROM", Legacy\r | |
| 5 | MBR, and GPT partition schemes are supported.\r | |
| 6 | \r | |
| 67f802ed | 7 | Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>\r |
| e5eed7d3 | 8 | This program and the accompanying materials\r |
| f42be642 | 9 | are licensed and made available under the terms and conditions of the BSD License\r |
| 10 | which accompanies this distribution. The full text of the license may be found at\r | |
| 11 | http://opensource.org/licenses/bsd-license.php\r | |
| adbcbf8f | 12 | \r |
| f42be642 | 13 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r |
| 14 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| adbcbf8f | 15 | \r |
| 16 | **/\r | |
| 17 | \r | |
| 18 | \r | |
| 19 | #include "Partition.h"\r | |
| 20 | \r | |
| 21 | //\r | |
| ff61847d | 22 | // Partition Driver Global Variables.\r |
| adbcbf8f | 23 | //\r |
| 24 | EFI_DRIVER_BINDING_PROTOCOL gPartitionDriverBinding = {\r | |
| 25 | PartitionDriverBindingSupported,\r | |
| 26 | PartitionDriverBindingStart,\r | |
| 27 | PartitionDriverBindingStop,\r | |
| 28 | 0xa,\r | |
| 29 | NULL,\r | |
| 30 | NULL\r | |
| 31 | };\r | |
| 32 | \r | |
| ff61847d | 33 | //\r |
| 48557c65 | 34 | // Prioritized function list to detect partition table. \r |
| ff61847d | 35 | //\r |
| adbcbf8f | 36 | PARTITION_DETECT_ROUTINE mPartitionDetectRoutineTable[] = {\r |
| 37 | PartitionInstallGptChildHandles,\r | |
| 38 | PartitionInstallElToritoChildHandles,\r | |
| 39 | PartitionInstallMbrChildHandles,\r | |
| 40 | NULL\r | |
| 41 | };\r | |
| 42 | \r | |
| 43 | \r | |
| 44 | \r | |
| 45 | /**\r | |
| 46 | Test to see if this driver supports ControllerHandle. Any ControllerHandle\r | |
| 47 | than contains a BlockIo and DiskIo protocol can be supported.\r | |
| 48 | \r | |
| 49 | @param This Protocol instance pointer.\r | |
| 50 | @param ControllerHandle Handle of device to test\r | |
| 51 | @param RemainingDevicePath Optional parameter use to pick a specific child\r | |
| 52 | device to start.\r | |
| 53 | \r | |
| 54 | @retval EFI_SUCCESS This driver supports this device\r | |
| 55 | @retval EFI_ALREADY_STARTED This driver is already running on this device\r | |
| 56 | @retval other This driver does not support this device\r | |
| 57 | \r | |
| 58 | **/\r | |
| 59 | EFI_STATUS\r | |
| 60 | EFIAPI\r | |
| 61 | PartitionDriverBindingSupported (\r | |
| 62 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
| 63 | IN EFI_HANDLE ControllerHandle,\r | |
| 64 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
| 65 | )\r | |
| 66 | {\r | |
| 67 | EFI_STATUS Status;\r | |
| 68 | EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r | |
| 69 | EFI_DISK_IO_PROTOCOL *DiskIo;\r | |
| 70 | EFI_DEV_PATH *Node;\r | |
| 71 | \r | |
| 9be29006 | 72 | //\r |
| 73 | // Check RemainingDevicePath validation\r | |
| 74 | //\r | |
| adbcbf8f | 75 | if (RemainingDevicePath != NULL) {\r |
| 9be29006 | 76 | //\r |
| 77 | // Check if RemainingDevicePath is the End of Device Path Node, \r | |
| 78 | // if yes, go on checking other conditions\r | |
| 79 | //\r | |
| 80 | if (!IsDevicePathEnd (RemainingDevicePath)) {\r | |
| 81 | //\r | |
| 82 | // If RemainingDevicePath isn't the End of Device Path Node,\r | |
| 83 | // check its validation\r | |
| 84 | //\r | |
| 85 | Node = (EFI_DEV_PATH *) RemainingDevicePath;\r | |
| 86 | if (Node->DevPath.Type != MEDIA_DEVICE_PATH ||\r | |
| adbcbf8f | 87 | Node->DevPath.SubType != MEDIA_HARDDRIVE_DP ||\r |
| 9be29006 | 88 | DevicePathNodeLength (&Node->DevPath) != sizeof (HARDDRIVE_DEVICE_PATH)) {\r |
| adbcbf8f | 89 | return EFI_UNSUPPORTED;\r |
| 9be29006 | 90 | }\r |
| adbcbf8f | 91 | }\r |
| 92 | }\r | |
| 9be29006 | 93 | \r |
| adbcbf8f | 94 | //\r |
| 95 | // Open the IO Abstraction(s) needed to perform the supported test\r | |
| 96 | //\r | |
| 97 | Status = gBS->OpenProtocol (\r | |
| 98 | ControllerHandle,\r | |
| 9be29006 | 99 | &gEfiDiskIoProtocolGuid,\r |
| 100 | (VOID **) &DiskIo,\r | |
| adbcbf8f | 101 | This->DriverBindingHandle,\r |
| 102 | ControllerHandle,\r | |
| 103 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
| 104 | );\r | |
| 105 | if (Status == EFI_ALREADY_STARTED) {\r | |
| 106 | return EFI_SUCCESS;\r | |
| 107 | }\r | |
| 108 | \r | |
| 109 | if (EFI_ERROR (Status)) {\r | |
| 110 | return Status;\r | |
| 111 | }\r | |
| 112 | //\r | |
| 113 | // Close the I/O Abstraction(s) used to perform the supported test\r | |
| 114 | //\r | |
| 115 | gBS->CloseProtocol (\r | |
| ff61847d | 116 | ControllerHandle,\r |
| 9be29006 | 117 | &gEfiDiskIoProtocolGuid,\r |
| ff61847d | 118 | This->DriverBindingHandle,\r |
| 119 | ControllerHandle\r | |
| 120 | );\r | |
| adbcbf8f | 121 | \r |
| 122 | //\r | |
| 9be29006 | 123 | // Open the EFI Device Path protocol needed to perform the supported test\r |
| adbcbf8f | 124 | //\r |
| 125 | Status = gBS->OpenProtocol (\r | |
| 126 | ControllerHandle,\r | |
| 9be29006 | 127 | &gEfiDevicePathProtocolGuid,\r |
| 128 | (VOID **) &ParentDevicePath,\r | |
| adbcbf8f | 129 | This->DriverBindingHandle,\r |
| 130 | ControllerHandle,\r | |
| 131 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
| 132 | );\r | |
| 133 | if (Status == EFI_ALREADY_STARTED) {\r | |
| 134 | return EFI_SUCCESS;\r | |
| 135 | }\r | |
| 136 | \r | |
| 137 | if (EFI_ERROR (Status)) {\r | |
| 138 | return Status;\r | |
| 139 | }\r | |
| 9be29006 | 140 | \r |
| adbcbf8f | 141 | //\r |
| 9be29006 | 142 | // Close protocol, don't use device path protocol in the Support() function\r |
| adbcbf8f | 143 | //\r |
| 144 | gBS->CloseProtocol (\r | |
| 145 | ControllerHandle,\r | |
| 9be29006 | 146 | &gEfiDevicePathProtocolGuid,\r |
| adbcbf8f | 147 | This->DriverBindingHandle,\r |
| 148 | ControllerHandle\r | |
| 149 | );\r | |
| 150 | \r | |
| 151 | //\r | |
| 152 | // Open the IO Abstraction(s) needed to perform the supported test\r | |
| 153 | //\r | |
| 154 | Status = gBS->OpenProtocol (\r | |
| 155 | ControllerHandle,\r | |
| 156 | &gEfiBlockIoProtocolGuid,\r | |
| 157 | NULL,\r | |
| 158 | This->DriverBindingHandle,\r | |
| 159 | ControllerHandle,\r | |
| 160 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
| 161 | );\r | |
| 162 | \r | |
| 163 | return Status;\r | |
| 164 | }\r | |
| 165 | \r | |
| 166 | \r | |
| 167 | /**\r | |
| 168 | Start this driver on ControllerHandle by opening a Block IO and Disk IO\r | |
| 169 | protocol, reading Device Path, and creating a child handle with a\r | |
| 170 | Disk IO and device path protocol.\r | |
| 171 | \r | |
| 172 | @param This Protocol instance pointer.\r | |
| 173 | @param ControllerHandle Handle of device to bind driver to\r | |
| 174 | @param RemainingDevicePath Optional parameter use to pick a specific child\r | |
| 175 | device to start.\r | |
| 176 | \r | |
| 177 | @retval EFI_SUCCESS This driver is added to ControllerHandle\r | |
| 178 | @retval EFI_ALREADY_STARTED This driver is already running on ControllerHandle\r | |
| 179 | @retval other This driver does not support this device\r | |
| 180 | \r | |
| 181 | **/\r | |
| 182 | EFI_STATUS\r | |
| 183 | EFIAPI\r | |
| 184 | PartitionDriverBindingStart (\r | |
| 185 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
| 186 | IN EFI_HANDLE ControllerHandle,\r | |
| 187 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
| 188 | )\r | |
| 189 | {\r | |
| 190 | EFI_STATUS Status;\r | |
| 191 | EFI_STATUS OpenStatus;\r | |
| 192 | EFI_BLOCK_IO_PROTOCOL *BlockIo;\r | |
| 193 | EFI_DISK_IO_PROTOCOL *DiskIo;\r | |
| 194 | EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r | |
| 195 | PARTITION_DETECT_ROUTINE *Routine;\r | |
| 9afd0514 | 196 | BOOLEAN MediaPresent;\r |
| 15cc67e6 | 197 | EFI_TPL OldTpl;\r |
| adbcbf8f | 198 | \r |
| 15cc67e6 | 199 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK); \r |
| 9be29006 | 200 | //\r |
| 201 | // Check RemainingDevicePath validation\r | |
| 202 | //\r | |
| 203 | if (RemainingDevicePath != NULL) {\r | |
| 204 | //\r | |
| 205 | // Check if RemainingDevicePath is the End of Device Path Node, \r | |
| 206 | // if yes, return EFI_SUCCESS\r | |
| 207 | //\r | |
| 208 | if (IsDevicePathEnd (RemainingDevicePath)) {\r | |
| 15cc67e6 | 209 | Status = EFI_SUCCESS;\r |
| 210 | goto Exit;\r | |
| 9be29006 | 211 | }\r |
| 212 | }\r | |
| 213 | \r | |
| adbcbf8f | 214 | Status = gBS->OpenProtocol (\r |
| 215 | ControllerHandle,\r | |
| 216 | &gEfiBlockIoProtocolGuid,\r | |
| 217 | (VOID **) &BlockIo,\r | |
| 218 | This->DriverBindingHandle,\r | |
| 219 | ControllerHandle,\r | |
| 220 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
| 221 | );\r | |
| 222 | if (EFI_ERROR (Status)) {\r | |
| 15cc67e6 | 223 | goto Exit;\r |
| adbcbf8f | 224 | }\r |
| 225 | //\r | |
| 226 | // Get the Device Path Protocol on ControllerHandle's handle\r | |
| 227 | //\r | |
| 228 | Status = gBS->OpenProtocol (\r | |
| 229 | ControllerHandle,\r | |
| 230 | &gEfiDevicePathProtocolGuid,\r | |
| 231 | (VOID **) &ParentDevicePath,\r | |
| 232 | This->DriverBindingHandle,\r | |
| 233 | ControllerHandle,\r | |
| 234 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
| 235 | );\r | |
| 236 | if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) {\r | |
| 15cc67e6 | 237 | goto Exit;\r |
| adbcbf8f | 238 | }\r |
| 239 | \r | |
| 240 | Status = gBS->OpenProtocol (\r | |
| 241 | ControllerHandle,\r | |
| 242 | &gEfiDiskIoProtocolGuid,\r | |
| 243 | (VOID **) &DiskIo,\r | |
| 244 | This->DriverBindingHandle,\r | |
| 245 | ControllerHandle,\r | |
| 246 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
| 247 | );\r | |
| 248 | if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) {\r | |
| 249 | gBS->CloseProtocol (\r | |
| 250 | ControllerHandle,\r | |
| 251 | &gEfiDevicePathProtocolGuid,\r | |
| 252 | This->DriverBindingHandle,\r | |
| 253 | ControllerHandle\r | |
| 254 | );\r | |
| 15cc67e6 | 255 | goto Exit;\r |
| adbcbf8f | 256 | }\r |
| 257 | \r | |
| 258 | OpenStatus = Status;\r | |
| 259 | \r | |
| 260 | //\r | |
| 9afd0514 | 261 | // Try to read blocks when there's media or it is removable physical partition.\r |
| adbcbf8f | 262 | //\r |
| 9afd0514 | 263 | Status = EFI_UNSUPPORTED;\r |
| 264 | MediaPresent = BlockIo->Media->MediaPresent;\r | |
| 265 | if (BlockIo->Media->MediaPresent ||\r | |
| 266 | (BlockIo->Media->RemovableMedia && !BlockIo->Media->LogicalPartition)) {\r | |
| adbcbf8f | 267 | //\r |
| 268 | // Try for GPT, then El Torito, and then legacy MBR partition types. If the\r | |
| 269 | // media supports a given partition type install child handles to represent\r | |
| 270 | // the partitions described by the media.\r | |
| 271 | //\r | |
| 272 | Routine = &mPartitionDetectRoutineTable[0];\r | |
| 273 | while (*Routine != NULL) {\r | |
| 274 | Status = (*Routine) (\r | |
| 275 | This,\r | |
| 276 | ControllerHandle,\r | |
| 277 | DiskIo,\r | |
| 278 | BlockIo,\r | |
| 279 | ParentDevicePath\r | |
| 280 | );\r | |
| 9afd0514 | 281 | if (!EFI_ERROR (Status) || Status == EFI_MEDIA_CHANGED || Status == EFI_NO_MEDIA) {\r |
| adbcbf8f | 282 | break;\r |
| 283 | }\r | |
| 284 | Routine++;\r | |
| 285 | }\r | |
| 286 | }\r | |
| 287 | //\r | |
| 288 | // In the case that the driver is already started (OpenStatus == EFI_ALREADY_STARTED),\r | |
| 289 | // the DevicePathProtocol and the DiskIoProtocol are not actually opened by the\r | |
| 290 | // driver. So don't try to close them. Otherwise, we will break the dependency\r | |
| 291 | // between the controller and the driver set up before.\r | |
| 292 | //\r | |
| 9afd0514 | 293 | // In the case that when the media changes on a device it will Reinstall the \r |
| 294 | // BlockIo interaface. This will cause a call to our Stop(), and a subsequent\r | |
| 295 | // reentrant call to our Start() successfully. We should leave the device open\r | |
| 296 | // when this happen. The "media change" case includes either the status is\r | |
| 297 | // EFI_MEDIA_CHANGED or it is a "media" to "no media" change. \r | |
| 298 | // \r | |
| 299 | if (EFI_ERROR (Status) &&\r | |
| 300 | !EFI_ERROR (OpenStatus) &&\r | |
| 301 | Status != EFI_MEDIA_CHANGED &&\r | |
| 302 | !(MediaPresent && Status == EFI_NO_MEDIA)) {\r | |
| adbcbf8f | 303 | gBS->CloseProtocol (\r |
| 304 | ControllerHandle,\r | |
| 305 | &gEfiDiskIoProtocolGuid,\r | |
| 306 | This->DriverBindingHandle,\r | |
| 307 | ControllerHandle\r | |
| 308 | );\r | |
| 309 | \r | |
| 310 | gBS->CloseProtocol (\r | |
| 311 | ControllerHandle,\r | |
| 312 | &gEfiDevicePathProtocolGuid,\r | |
| 313 | This->DriverBindingHandle,\r | |
| 314 | ControllerHandle\r | |
| 315 | );\r | |
| 316 | }\r | |
| 317 | \r | |
| 15cc67e6 | 318 | Exit:\r |
| 319 | gBS->RestoreTPL (OldTpl);\r | |
| adbcbf8f | 320 | return Status;\r |
| 321 | }\r | |
| 322 | \r | |
| 323 | \r | |
| 324 | /**\r | |
| 48557c65 | 325 | Stop this driver on ControllerHandle. Support stopping any child handles\r |
| adbcbf8f | 326 | created by this driver.\r |
| 327 | \r | |
| 328 | @param This Protocol instance pointer.\r | |
| 329 | @param ControllerHandle Handle of device to stop driver on\r | |
| 330 | @param NumberOfChildren Number of Handles in ChildHandleBuffer. If number of\r | |
| 331 | children is zero stop the entire bus driver.\r | |
| 332 | @param ChildHandleBuffer List of Child Handles to Stop.\r | |
| 333 | \r | |
| 334 | @retval EFI_SUCCESS This driver is removed ControllerHandle\r | |
| 335 | @retval other This driver was not removed from this device\r | |
| 336 | \r | |
| 337 | **/\r | |
| 338 | EFI_STATUS\r | |
| 339 | EFIAPI\r | |
| 340 | PartitionDriverBindingStop (\r | |
| 341 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
| 342 | IN EFI_HANDLE ControllerHandle,\r | |
| 343 | IN UINTN NumberOfChildren,\r | |
| 344 | IN EFI_HANDLE *ChildHandleBuffer\r | |
| 345 | )\r | |
| 346 | {\r | |
| 347 | EFI_STATUS Status;\r | |
| 348 | UINTN Index;\r | |
| 349 | EFI_BLOCK_IO_PROTOCOL *BlockIo;\r | |
| 350 | BOOLEAN AllChildrenStopped;\r | |
| 351 | PARTITION_PRIVATE_DATA *Private;\r | |
| 352 | EFI_DISK_IO_PROTOCOL *DiskIo;\r | |
| 353 | \r | |
| 354 | if (NumberOfChildren == 0) {\r | |
| 355 | //\r | |
| 356 | // Close the bus driver\r | |
| 357 | //\r | |
| 358 | gBS->CloseProtocol (\r | |
| 359 | ControllerHandle,\r | |
| 360 | &gEfiDiskIoProtocolGuid,\r | |
| 361 | This->DriverBindingHandle,\r | |
| 362 | ControllerHandle\r | |
| 363 | );\r | |
| 364 | \r | |
| 365 | gBS->CloseProtocol (\r | |
| 366 | ControllerHandle,\r | |
| 367 | &gEfiDevicePathProtocolGuid,\r | |
| 368 | This->DriverBindingHandle,\r | |
| 369 | ControllerHandle\r | |
| 370 | );\r | |
| 371 | \r | |
| 372 | return EFI_SUCCESS;\r | |
| 373 | }\r | |
| 374 | \r | |
| 375 | AllChildrenStopped = TRUE;\r | |
| 376 | for (Index = 0; Index < NumberOfChildren; Index++) {\r | |
| 377 | Status = gBS->OpenProtocol (\r | |
| 378 | ChildHandleBuffer[Index],\r | |
| 379 | &gEfiBlockIoProtocolGuid,\r | |
| 380 | (VOID **) &BlockIo,\r | |
| 381 | This->DriverBindingHandle,\r | |
| 382 | ControllerHandle,\r | |
| 383 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
| 384 | );\r | |
| 385 | if (!EFI_ERROR (Status)) {\r | |
| 386 | \r | |
| 387 | Private = PARTITION_DEVICE_FROM_BLOCK_IO_THIS (BlockIo);\r | |
| 388 | \r | |
| 389 | //\r | |
| 390 | // All Software protocols have be freed from the handle so remove it.\r | |
| 391 | //\r | |
| 392 | BlockIo->FlushBlocks (BlockIo);\r | |
| 393 | \r | |
| 394 | Status = gBS->CloseProtocol (\r | |
| 395 | ControllerHandle,\r | |
| 396 | &gEfiDiskIoProtocolGuid,\r | |
| 397 | This->DriverBindingHandle,\r | |
| 398 | ChildHandleBuffer[Index]\r | |
| 399 | );\r | |
| 400 | \r | |
| 401 | Status = gBS->UninstallMultipleProtocolInterfaces (\r | |
| 402 | ChildHandleBuffer[Index],\r | |
| 403 | &gEfiDevicePathProtocolGuid,\r | |
| 404 | Private->DevicePath,\r | |
| 405 | &gEfiBlockIoProtocolGuid,\r | |
| 406 | &Private->BlockIo,\r | |
| 407 | Private->EspGuid,\r | |
| 408 | NULL,\r | |
| 409 | NULL\r | |
| 410 | );\r | |
| 411 | if (EFI_ERROR (Status)) {\r | |
| 412 | gBS->OpenProtocol (\r | |
| 413 | ControllerHandle,\r | |
| 414 | &gEfiDiskIoProtocolGuid,\r | |
| 415 | (VOID **) &DiskIo,\r | |
| 416 | This->DriverBindingHandle,\r | |
| 417 | ChildHandleBuffer[Index],\r | |
| 418 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
| 419 | );\r | |
| 420 | } else {\r | |
| 421 | FreePool (Private->DevicePath);\r | |
| 422 | FreePool (Private);\r | |
| 423 | }\r | |
| 424 | \r | |
| 425 | }\r | |
| 426 | \r | |
| 427 | if (EFI_ERROR (Status)) {\r | |
| 428 | AllChildrenStopped = FALSE;\r | |
| 429 | }\r | |
| 430 | }\r | |
| 431 | \r | |
| 432 | if (!AllChildrenStopped) {\r | |
| 433 | return EFI_DEVICE_ERROR;\r | |
| 434 | }\r | |
| 435 | \r | |
| 436 | return EFI_SUCCESS;\r | |
| 437 | }\r | |
| 438 | \r | |
| 439 | \r | |
| 440 | /**\r | |
| 441 | Reset the Block Device.\r | |
| 442 | \r | |
| 443 | @param This Protocol instance pointer.\r | |
| 444 | @param ExtendedVerification Driver may perform diagnostics on reset.\r | |
| 445 | \r | |
| 446 | @retval EFI_SUCCESS The device was reset.\r | |
| 447 | @retval EFI_DEVICE_ERROR The device is not functioning properly and could\r | |
| 448 | not be reset.\r | |
| 449 | \r | |
| 450 | **/\r | |
| adbcbf8f | 451 | EFI_STATUS\r |
| 452 | EFIAPI\r | |
| 453 | PartitionReset (\r | |
| 454 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
| 455 | IN BOOLEAN ExtendedVerification\r | |
| 456 | )\r | |
| 457 | {\r | |
| 458 | PARTITION_PRIVATE_DATA *Private;\r | |
| 459 | \r | |
| 460 | Private = PARTITION_DEVICE_FROM_BLOCK_IO_THIS (This);\r | |
| 461 | \r | |
| 462 | return Private->ParentBlockIo->Reset (\r | |
| 463 | Private->ParentBlockIo,\r | |
| 464 | ExtendedVerification\r | |
| 465 | );\r | |
| 466 | }\r | |
| 467 | \r | |
| 468 | \r | |
| 469 | /**\r | |
| 470 | Read by using the Disk IO protocol on the parent device. Lba addresses\r | |
| 471 | must be converted to byte offsets.\r | |
| 472 | \r | |
| 473 | @param This Protocol instance pointer.\r | |
| 474 | @param MediaId Id of the media, changes every time the media is replaced.\r | |
| 475 | @param Lba The starting Logical Block Address to read from\r | |
| 476 | @param BufferSize Size of Buffer, must be a multiple of device block size.\r | |
| 477 | @param Buffer Buffer containing read data\r | |
| 478 | \r | |
| 479 | @retval EFI_SUCCESS The data was read correctly from the device.\r | |
| 480 | @retval EFI_DEVICE_ERROR The device reported an error while performing the read.\r | |
| 481 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
| 482 | @retval EFI_MEDIA_CHANGED The MediaId does not matched the current device.\r | |
| 483 | @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.\r | |
| 484 | @retval EFI_INVALID_PARAMETER The read request contains device addresses that are not\r | |
| 485 | valid for the device.\r | |
| 486 | \r | |
| 487 | **/\r | |
| adbcbf8f | 488 | EFI_STATUS\r |
| 489 | EFIAPI\r | |
| 490 | PartitionReadBlocks (\r | |
| 491 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
| 492 | IN UINT32 MediaId,\r | |
| 493 | IN EFI_LBA Lba,\r | |
| 494 | IN UINTN BufferSize,\r | |
| 495 | OUT VOID *Buffer\r | |
| 496 | )\r | |
| 497 | {\r | |
| 498 | PARTITION_PRIVATE_DATA *Private;\r | |
| 499 | UINT64 Offset;\r | |
| 500 | \r | |
| 501 | Private = PARTITION_DEVICE_FROM_BLOCK_IO_THIS (This);\r | |
| 502 | \r | |
| 503 | if (BufferSize % Private->BlockSize != 0) {\r | |
| 504 | return EFI_BAD_BUFFER_SIZE;\r | |
| 505 | }\r | |
| 506 | \r | |
| 507 | Offset = MultU64x32 (Lba, Private->BlockSize) + Private->Start;\r | |
| 508 | if (Offset + BufferSize > Private->End) {\r | |
| 509 | return EFI_INVALID_PARAMETER;\r | |
| 510 | }\r | |
| 511 | //\r | |
| 512 | // Because some kinds of partition have different block size from their parent\r | |
| 513 | // device, we call the Disk IO protocol on the parent device, not the Block IO\r | |
| 514 | // protocol\r | |
| 515 | //\r | |
| 516 | return Private->DiskIo->ReadDisk (Private->DiskIo, MediaId, Offset, BufferSize, Buffer);\r | |
| 517 | }\r | |
| 518 | \r | |
| 519 | /**\r | |
| 520 | Write by using the Disk IO protocol on the parent device. Lba addresses\r | |
| 521 | must be converted to byte offsets.\r | |
| 522 | \r | |
| 523 | @param This Protocol instance pointer.\r | |
| 524 | @param MediaId Id of the media, changes every time the media is replaced.\r | |
| 525 | @param Lba The starting Logical Block Address to read from\r | |
| 526 | @param BufferSize Size of Buffer, must be a multiple of device block size.\r | |
| 527 | @param Buffer Buffer containing read data\r | |
| 528 | \r | |
| 529 | @retval EFI_SUCCESS The data was written correctly to the device.\r | |
| 530 | @retval EFI_WRITE_PROTECTED The device can not be written to.\r | |
| 531 | @retval EFI_DEVICE_ERROR The device reported an error while performing the write.\r | |
| 532 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
| 533 | @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.\r | |
| 534 | @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.\r | |
| 535 | @retval EFI_INVALID_PARAMETER The write request contains a LBA that is not\r | |
| 536 | valid for the device.\r | |
| 537 | \r | |
| 538 | **/\r | |
| adbcbf8f | 539 | EFI_STATUS\r |
| 540 | EFIAPI\r | |
| 541 | PartitionWriteBlocks (\r | |
| 542 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
| 543 | IN UINT32 MediaId,\r | |
| 544 | IN EFI_LBA Lba,\r | |
| 545 | IN UINTN BufferSize,\r | |
| 546 | OUT VOID *Buffer\r | |
| 547 | )\r | |
| 548 | {\r | |
| 549 | PARTITION_PRIVATE_DATA *Private;\r | |
| 550 | UINT64 Offset;\r | |
| 551 | \r | |
| 552 | Private = PARTITION_DEVICE_FROM_BLOCK_IO_THIS (This);\r | |
| 553 | \r | |
| 554 | if (BufferSize % Private->BlockSize != 0) {\r | |
| 555 | return EFI_BAD_BUFFER_SIZE;\r | |
| 556 | }\r | |
| 557 | \r | |
| 558 | Offset = MultU64x32 (Lba, Private->BlockSize) + Private->Start;\r | |
| 559 | if (Offset + BufferSize > Private->End) {\r | |
| 560 | return EFI_INVALID_PARAMETER;\r | |
| 561 | }\r | |
| 562 | //\r | |
| 563 | // Because some kinds of partition have different block size from their parent\r | |
| 564 | // device, we call the Disk IO protocol on the parent device, not the Block IO\r | |
| 565 | // protocol\r | |
| 566 | //\r | |
| 567 | return Private->DiskIo->WriteDisk (Private->DiskIo, MediaId, Offset, BufferSize, Buffer);\r | |
| 568 | }\r | |
| 569 | \r | |
| 570 | \r | |
| 571 | /**\r | |
| 572 | Flush the parent Block Device.\r | |
| 573 | \r | |
| 574 | @param This Protocol instance pointer.\r | |
| 575 | \r | |
| 576 | @retval EFI_SUCCESS All outstanding data was written to the device\r | |
| 577 | @retval EFI_DEVICE_ERROR The device reported an error while writting back the data\r | |
| 578 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
| 579 | \r | |
| 580 | **/\r | |
| adbcbf8f | 581 | EFI_STATUS\r |
| 582 | EFIAPI\r | |
| 583 | PartitionFlushBlocks (\r | |
| 584 | IN EFI_BLOCK_IO_PROTOCOL *This\r | |
| 585 | )\r | |
| 586 | {\r | |
| 587 | PARTITION_PRIVATE_DATA *Private;\r | |
| 588 | \r | |
| 589 | Private = PARTITION_DEVICE_FROM_BLOCK_IO_THIS (This);\r | |
| 590 | \r | |
| 591 | return Private->ParentBlockIo->FlushBlocks (Private->ParentBlockIo);\r | |
| 592 | }\r | |
| 593 | \r | |
| 594 | \r | |
| 595 | \r | |
| 596 | /**\r | |
| 597 | Create a child handle for a logical block device that represents the\r | |
| 598 | bytes Start to End of the Parent Block IO device.\r | |
| 599 | \r | |
| a8d0c20e | 600 | @param[in] This Protocol instance pointer\r |
| adbcbf8f | 601 | @param[in] ParentHandle Parent Handle for new child\r |
| 602 | @param[in] ParentDiskIo Parent DiskIo interface\r | |
| 603 | @param[in] ParentBlockIo Parent BlockIo interface\r | |
| 604 | @param[in] ParentDevicePath Parent Device Path\r | |
| 605 | @param[in] DevicePathNode Child Device Path node\r | |
| 606 | @param[in] Start Start Block\r | |
| 607 | @param[in] End End Block\r | |
| 608 | @param[in] BlockSize Child block size\r | |
| 609 | @param[in] InstallEspGuid Flag to install EFI System Partition GUID on handle\r | |
| 610 | \r | |
| 611 | @retval EFI_SUCCESS A child handle was added\r | |
| 612 | @retval other A child handle was not added\r | |
| 613 | \r | |
| 614 | **/\r | |
| 615 | EFI_STATUS\r | |
| 616 | PartitionInstallChildHandle (\r | |
| 617 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
| 618 | IN EFI_HANDLE ParentHandle,\r | |
| 619 | IN EFI_DISK_IO_PROTOCOL *ParentDiskIo,\r | |
| 620 | IN EFI_BLOCK_IO_PROTOCOL *ParentBlockIo,\r | |
| 621 | IN EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath,\r | |
| 622 | IN EFI_DEVICE_PATH_PROTOCOL *DevicePathNode,\r | |
| 623 | IN EFI_LBA Start,\r | |
| 624 | IN EFI_LBA End,\r | |
| 625 | IN UINT32 BlockSize,\r | |
| 626 | IN BOOLEAN InstallEspGuid\r | |
| 627 | )\r | |
| 628 | {\r | |
| 629 | EFI_STATUS Status;\r | |
| 630 | PARTITION_PRIVATE_DATA *Private;\r | |
| 631 | \r | |
| 632 | Private = AllocateZeroPool (sizeof (PARTITION_PRIVATE_DATA));\r | |
| 633 | if (Private == NULL) {\r | |
| 634 | return EFI_OUT_OF_RESOURCES;\r | |
| 635 | }\r | |
| 636 | \r | |
| 637 | Private->Signature = PARTITION_PRIVATE_DATA_SIGNATURE;\r | |
| 638 | \r | |
| 639 | Private->Start = MultU64x32 (Start, ParentBlockIo->Media->BlockSize);\r | |
| 640 | Private->End = MultU64x32 (End + 1, ParentBlockIo->Media->BlockSize);\r | |
| 641 | \r | |
| 642 | Private->BlockSize = BlockSize;\r | |
| 643 | Private->ParentBlockIo = ParentBlockIo;\r | |
| 644 | Private->DiskIo = ParentDiskIo;\r | |
| 645 | \r | |
| 9e9f86ec | 646 | Private->BlockIo.Revision = ParentBlockIo->Revision;\r |
| adbcbf8f | 647 | \r |
| 648 | Private->BlockIo.Media = &Private->Media;\r | |
| f1e2b802 | 649 | CopyMem (Private->BlockIo.Media, ParentBlockIo->Media, sizeof (EFI_BLOCK_IO_MEDIA));\r |
| adbcbf8f | 650 | Private->Media.LogicalPartition = TRUE;\r |
| 67f802ed RN |
651 | \r |
| 652 | //\r | |
| 653 | // Logical BlockIo instance doesn't have IoAlign restriction because it implements block io operation based on DiskIo\r | |
| 654 | //\r | |
| 655 | Private->Media.IoAlign = 0;\r | |
| adbcbf8f | 656 | Private->Media.LastBlock = DivU64x32 (\r |
| 657 | MultU64x32 (\r | |
| 658 | End - Start + 1,\r | |
| 659 | ParentBlockIo->Media->BlockSize\r | |
| 660 | ),\r | |
| 661 | BlockSize\r | |
| 662 | ) - 1;\r | |
| 663 | \r | |
| 67f802ed | 664 | Private->Media.BlockSize = (UINT32) BlockSize;\r |
| adbcbf8f | 665 | \r |
| fe3b68bb RN |
666 | //\r |
| 667 | // Per UEFI Spec, LowestAlignedLba and LogicalBlocksPerPhysicalBlock must be 0\r | |
| 668 | // for logical partitions.\r | |
| 669 | //\r | |
| 670 | if (Private->BlockIo.Revision >= EFI_BLOCK_IO_PROTOCOL_REVISION2) {\r | |
| 671 | Private->BlockIo.Media->LowestAlignedLba = 0;\r | |
| 672 | Private->BlockIo.Media->LogicalBlocksPerPhysicalBlock = 0;\r | |
| 673 | }\r | |
| 674 | \r | |
| adbcbf8f | 675 | Private->BlockIo.Reset = PartitionReset;\r |
| 676 | Private->BlockIo.ReadBlocks = PartitionReadBlocks;\r | |
| 677 | Private->BlockIo.WriteBlocks = PartitionWriteBlocks;\r | |
| 678 | Private->BlockIo.FlushBlocks = PartitionFlushBlocks;\r | |
| 679 | \r | |
| 680 | Private->DevicePath = AppendDevicePathNode (ParentDevicePath, DevicePathNode);\r | |
| 681 | \r | |
| 682 | if (Private->DevicePath == NULL) {\r | |
| 683 | FreePool (Private);\r | |
| 684 | return EFI_OUT_OF_RESOURCES;\r | |
| 685 | }\r | |
| 686 | \r | |
| 687 | if (InstallEspGuid) {\r | |
| 688 | Private->EspGuid = &gEfiPartTypeSystemPartGuid;\r | |
| 689 | } else {\r | |
| 690 | //\r | |
| 691 | // If NULL InstallMultipleProtocolInterfaces will ignore it.\r | |
| 692 | //\r | |
| 693 | Private->EspGuid = NULL;\r | |
| 694 | }\r | |
| 695 | //\r | |
| 696 | // Create the new handle\r | |
| 697 | //\r | |
| 698 | Private->Handle = NULL;\r | |
| 699 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
| 700 | &Private->Handle,\r | |
| 701 | &gEfiDevicePathProtocolGuid,\r | |
| 702 | Private->DevicePath,\r | |
| 703 | &gEfiBlockIoProtocolGuid,\r | |
| 704 | &Private->BlockIo,\r | |
| 705 | Private->EspGuid,\r | |
| 706 | NULL,\r | |
| 707 | NULL\r | |
| 708 | );\r | |
| 709 | \r | |
| 710 | if (!EFI_ERROR (Status)) {\r | |
| 711 | //\r | |
| 712 | // Open the Parent Handle for the child\r | |
| 713 | //\r | |
| 714 | Status = gBS->OpenProtocol (\r | |
| 715 | ParentHandle,\r | |
| 716 | &gEfiDiskIoProtocolGuid,\r | |
| 717 | (VOID **) &ParentDiskIo,\r | |
| 718 | This->DriverBindingHandle,\r | |
| 719 | Private->Handle,\r | |
| 720 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
| 721 | );\r | |
| 722 | } else {\r | |
| 723 | FreePool (Private->DevicePath);\r | |
| 724 | FreePool (Private);\r | |
| 725 | }\r | |
| 726 | \r | |
| 727 | return Status;\r | |
| 728 | }\r | |
| 729 | \r | |
| 730 | \r | |
| 731 | /**\r | |
| 732 | The user Entry Point for module Partition. The user code starts with this function.\r | |
| 733 | \r | |
| 734 | @param[in] ImageHandle The firmware allocated handle for the EFI image. \r | |
| 735 | @param[in] SystemTable A pointer to the EFI System Table.\r | |
| 736 | \r | |
| 737 | @retval EFI_SUCCESS The entry point is executed successfully.\r | |
| 738 | @retval other Some error occurs when executing this entry point.\r | |
| 739 | \r | |
| 740 | **/\r | |
| 741 | EFI_STATUS\r | |
| 742 | EFIAPI\r | |
| 743 | InitializePartition (\r | |
| 744 | IN EFI_HANDLE ImageHandle,\r | |
| 745 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
| 746 | )\r | |
| 747 | {\r | |
| 748 | EFI_STATUS Status;\r | |
| 749 | \r | |
| 750 | //\r | |
| 751 | // Install driver model protocol(s).\r | |
| 752 | //\r | |
| d38a0f44 | 753 | Status = EfiLibInstallDriverBindingComponentName2 (\r |
| adbcbf8f | 754 | ImageHandle,\r |
| 755 | SystemTable,\r | |
| 756 | &gPartitionDriverBinding,\r | |
| 757 | ImageHandle,\r | |
| 758 | &gPartitionComponentName,\r | |
| d38a0f44 | 759 | &gPartitionComponentName2\r |
| adbcbf8f | 760 | );\r |
| 761 | ASSERT_EFI_ERROR (Status);\r | |
| 762 | \r | |
| 763 | \r | |
| 764 | return Status;\r | |
| 765 | }\r | |
| 766 | \r |