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2632178b AB |
1 | /** @file\r |
2 | Provides 'initrd' dynamic UEFI shell command to load a Linux initrd\r | |
3 | via its GUIDed vendor media path\r | |
4 | \r | |
5 | Copyright (c) 2020, Arm, Ltd. All rights reserved.<BR>\r | |
6 | \r | |
7 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
8 | **/\r | |
9 | \r | |
10 | #include <Uefi.h>\r | |
11 | \r | |
12 | #include <Library/DebugLib.h>\r | |
13 | #include <Library/DevicePathLib.h>\r | |
14 | #include <Library/HiiLib.h>\r | |
15 | #include <Library/MemoryAllocationLib.h>\r | |
16 | #include <Library/ShellLib.h>\r | |
17 | #include <Library/UefiBootServicesTableLib.h>\r | |
18 | #include <Library/UefiHiiServicesLib.h>\r | |
19 | \r | |
20 | #include <Guid/LinuxEfiInitrdMedia.h>\r | |
21 | \r | |
22 | #include <Protocol/DevicePath.h>\r | |
23 | #include <Protocol/HiiPackageList.h>\r | |
24 | #include <Protocol/LoadFile2.h>\r | |
25 | #include <Protocol/ShellDynamicCommand.h>\r | |
26 | \r | |
27 | #pragma pack (1)\r | |
28 | typedef struct {\r | |
29 | VENDOR_DEVICE_PATH VenMediaNode;\r | |
30 | EFI_DEVICE_PATH_PROTOCOL EndNode;\r | |
31 | } SINGLE_NODE_VENDOR_MEDIA_DEVPATH;\r | |
32 | #pragma pack ()\r | |
33 | \r | |
ac0a286f MK |
34 | STATIC EFI_HII_HANDLE mLinuxInitrdShellCommandHiiHandle;\r |
35 | STATIC EFI_PHYSICAL_ADDRESS mInitrdFileAddress;\r | |
36 | STATIC UINTN mInitrdFileSize;\r | |
37 | STATIC EFI_HANDLE mInitrdLoadFile2Handle;\r | |
38 | \r | |
39 | STATIC CONST SHELL_PARAM_ITEM ParamList[] = {\r | |
40 | { L"-u", TypeFlag },\r | |
41 | { NULL, TypeMax }\r | |
42 | };\r | |
2632178b | 43 | \r |
ac0a286f | 44 | STATIC CONST SINGLE_NODE_VENDOR_MEDIA_DEVPATH mInitrdDevicePath = {\r |
2632178b AB |
45 | {\r |
46 | {\r | |
ac0a286f | 47 | MEDIA_DEVICE_PATH, MEDIA_VENDOR_DP,{ sizeof (VENDOR_DEVICE_PATH) }\r |
2632178b AB |
48 | },\r |
49 | LINUX_EFI_INITRD_MEDIA_GUID\r | |
ac0a286f | 50 | },{\r |
2632178b | 51 | END_DEVICE_PATH_TYPE, END_ENTIRE_DEVICE_PATH_SUBTYPE,\r |
ac0a286f | 52 | { sizeof (EFI_DEVICE_PATH_PROTOCOL) }\r |
2632178b AB |
53 | }\r |
54 | };\r | |
55 | \r | |
ecb30848 AB |
56 | STATIC\r |
57 | BOOLEAN\r | |
58 | IsOtherInitrdDevicePathAlreadyInstalled (\r | |
59 | VOID\r | |
60 | )\r | |
61 | {\r | |
ac0a286f MK |
62 | EFI_STATUS Status;\r |
63 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r | |
64 | EFI_HANDLE Handle;\r | |
ecb30848 AB |
65 | \r |
66 | DevicePath = (EFI_DEVICE_PATH_PROTOCOL *)&mInitrdDevicePath;\r | |
ac0a286f MK |
67 | Status = gBS->LocateDevicePath (\r |
68 | &gEfiLoadFile2ProtocolGuid,\r | |
69 | &DevicePath,\r | |
70 | &Handle\r | |
71 | );\r | |
ecb30848 AB |
72 | if (EFI_ERROR (Status)) {\r |
73 | return FALSE;\r | |
74 | }\r | |
75 | \r | |
76 | //\r | |
77 | // Check whether the existing instance is one that we installed during\r | |
78 | // a previous invocation.\r | |
79 | //\r | |
80 | if (Handle == mInitrdLoadFile2Handle) {\r | |
81 | return FALSE;\r | |
82 | }\r | |
ac0a286f | 83 | \r |
ecb30848 AB |
84 | return TRUE;\r |
85 | }\r | |
86 | \r | |
2632178b AB |
87 | STATIC\r |
88 | EFI_STATUS\r | |
89 | EFIAPI\r | |
90 | InitrdLoadFile2 (\r | |
ac0a286f MK |
91 | IN EFI_LOAD_FILE2_PROTOCOL *This,\r |
92 | IN EFI_DEVICE_PATH_PROTOCOL *FilePath,\r | |
93 | IN BOOLEAN BootPolicy,\r | |
94 | IN OUT UINTN *BufferSize,\r | |
95 | OUT VOID *Buffer OPTIONAL\r | |
2632178b AB |
96 | )\r |
97 | {\r | |
98 | if (BootPolicy) {\r | |
99 | return EFI_UNSUPPORTED;\r | |
100 | }\r | |
101 | \r | |
ac0a286f | 102 | if ((BufferSize == NULL) || !IsDevicePathValid (FilePath, 0)) {\r |
2632178b AB |
103 | return EFI_INVALID_PARAMETER;\r |
104 | }\r | |
105 | \r | |
ac0a286f MK |
106 | if ((FilePath->Type != END_DEVICE_PATH_TYPE) ||\r |
107 | (FilePath->SubType != END_ENTIRE_DEVICE_PATH_SUBTYPE) ||\r | |
108 | (mInitrdFileSize == 0))\r | |
109 | {\r | |
2632178b AB |
110 | return EFI_NOT_FOUND;\r |
111 | }\r | |
112 | \r | |
ac0a286f | 113 | if ((Buffer == NULL) || (*BufferSize < mInitrdFileSize)) {\r |
2632178b AB |
114 | *BufferSize = mInitrdFileSize;\r |
115 | return EFI_BUFFER_TOO_SMALL;\r | |
116 | }\r | |
117 | \r | |
118 | ASSERT (mInitrdFileAddress != 0);\r | |
119 | \r | |
120 | gBS->CopyMem (Buffer, (VOID *)(UINTN)mInitrdFileAddress, mInitrdFileSize);\r | |
121 | *BufferSize = mInitrdFileSize;\r | |
122 | return EFI_SUCCESS;\r | |
123 | }\r | |
124 | \r | |
ac0a286f | 125 | STATIC CONST EFI_LOAD_FILE2_PROTOCOL mInitrdLoadFile2 = {\r |
2632178b AB |
126 | InitrdLoadFile2,\r |
127 | };\r | |
128 | \r | |
129 | STATIC\r | |
130 | EFI_STATUS\r | |
131 | UninstallLoadFile2Protocol (\r | |
132 | VOID\r | |
133 | )\r | |
134 | {\r | |
ac0a286f | 135 | EFI_STATUS Status;\r |
2632178b AB |
136 | \r |
137 | if (mInitrdLoadFile2Handle != NULL) {\r | |
ac0a286f MK |
138 | Status = gBS->UninstallMultipleProtocolInterfaces (\r |
139 | mInitrdLoadFile2Handle,\r | |
140 | &gEfiDevicePathProtocolGuid,\r | |
141 | &mInitrdDevicePath,\r | |
142 | &gEfiLoadFile2ProtocolGuid,\r | |
143 | &mInitrdLoadFile2,\r | |
144 | NULL\r | |
145 | );\r | |
2632178b AB |
146 | if (!EFI_ERROR (Status)) {\r |
147 | mInitrdLoadFile2Handle = NULL;\r | |
148 | }\r | |
ac0a286f | 149 | \r |
6c6fef02 | 150 | return Status;\r |
2632178b | 151 | }\r |
ac0a286f | 152 | \r |
6c6fef02 | 153 | return EFI_SUCCESS;\r |
2632178b AB |
154 | }\r |
155 | \r | |
156 | STATIC\r | |
157 | VOID\r | |
158 | FreeInitrdFile (\r | |
159 | VOID\r | |
160 | )\r | |
161 | {\r | |
162 | if (mInitrdFileSize != 0) {\r | |
163 | gBS->FreePages (mInitrdFileAddress, EFI_SIZE_TO_PAGES (mInitrdFileSize));\r | |
164 | mInitrdFileSize = 0;\r | |
165 | }\r | |
166 | }\r | |
167 | \r | |
168 | STATIC\r | |
169 | EFI_STATUS\r | |
170 | CacheInitrdFile (\r | |
ac0a286f | 171 | IN SHELL_FILE_HANDLE FileHandle\r |
2632178b AB |
172 | )\r |
173 | {\r | |
ac0a286f MK |
174 | EFI_STATUS Status;\r |
175 | UINT64 FileSize;\r | |
176 | UINTN ReadSize;\r | |
2632178b AB |
177 | \r |
178 | Status = gEfiShellProtocol->GetFileSize (FileHandle, &FileSize);\r | |
179 | if (EFI_ERROR (Status)) {\r | |
180 | return Status;\r | |
181 | }\r | |
182 | \r | |
ac0a286f | 183 | if ((FileSize == 0) || (FileSize > MAX_UINTN)) {\r |
2632178b AB |
184 | return EFI_UNSUPPORTED;\r |
185 | }\r | |
186 | \r | |
ac0a286f MK |
187 | Status = gBS->AllocatePages (\r |
188 | AllocateAnyPages,\r | |
189 | EfiLoaderData,\r | |
190 | EFI_SIZE_TO_PAGES ((UINTN)FileSize),\r | |
191 | &mInitrdFileAddress\r | |
192 | );\r | |
2632178b AB |
193 | if (EFI_ERROR (Status)) {\r |
194 | return Status;\r | |
195 | }\r | |
196 | \r | |
197 | ReadSize = (UINTN)FileSize;\r | |
ac0a286f MK |
198 | Status = gEfiShellProtocol->ReadFile (\r |
199 | FileHandle,\r | |
200 | &ReadSize,\r | |
201 | (VOID *)(UINTN)mInitrdFileAddress\r | |
202 | );\r | |
203 | if (EFI_ERROR (Status) || (ReadSize < FileSize)) {\r | |
204 | DEBUG ((\r | |
205 | DEBUG_WARN,\r | |
206 | "%a: failed to read initrd file - %r 0x%lx 0x%lx\n",\r | |
207 | __FUNCTION__,\r | |
208 | Status,\r | |
209 | (UINT64)ReadSize,\r | |
210 | FileSize\r | |
211 | ));\r | |
2632178b AB |
212 | goto FreeMemory;\r |
213 | }\r | |
214 | \r | |
215 | if (mInitrdLoadFile2Handle == NULL) {\r | |
ac0a286f MK |
216 | Status = gBS->InstallMultipleProtocolInterfaces (\r |
217 | &mInitrdLoadFile2Handle,\r | |
218 | &gEfiDevicePathProtocolGuid,\r | |
219 | &mInitrdDevicePath,\r | |
220 | &gEfiLoadFile2ProtocolGuid,\r | |
221 | &mInitrdLoadFile2,\r | |
222 | NULL\r | |
223 | );\r | |
2632178b AB |
224 | ASSERT_EFI_ERROR (Status);\r |
225 | }\r | |
226 | \r | |
5a8bc527 | 227 | mInitrdFileSize = (UINTN)FileSize;\r |
2632178b AB |
228 | return EFI_SUCCESS;\r |
229 | \r | |
230 | FreeMemory:\r | |
231 | gBS->FreePages (mInitrdFileAddress, EFI_SIZE_TO_PAGES ((UINTN)FileSize));\r | |
232 | return Status;\r | |
233 | }\r | |
234 | \r | |
235 | /**\r | |
236 | Function for 'initrd' command.\r | |
237 | \r | |
238 | @param[in] ImageHandle Handle to the Image (NULL if Internal).\r | |
239 | @param[in] SystemTable Pointer to the System Table (NULL if Internal).\r | |
240 | **/\r | |
241 | STATIC\r | |
242 | SHELL_STATUS\r | |
243 | EFIAPI\r | |
244 | RunInitrd (\r | |
245 | IN EFI_HANDLE ImageHandle,\r | |
246 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
247 | )\r | |
248 | {\r | |
ac0a286f MK |
249 | EFI_STATUS Status;\r |
250 | LIST_ENTRY *Package;\r | |
251 | CHAR16 *ProblemParam;\r | |
252 | CONST CHAR16 *Param;\r | |
253 | CHAR16 *Filename;\r | |
254 | SHELL_STATUS ShellStatus;\r | |
255 | SHELL_FILE_HANDLE FileHandle;\r | |
2632178b | 256 | \r |
ac0a286f MK |
257 | ProblemParam = NULL;\r |
258 | ShellStatus = SHELL_SUCCESS;\r | |
2632178b AB |
259 | \r |
260 | Status = ShellInitialize ();\r | |
261 | ASSERT_EFI_ERROR (Status);\r | |
262 | \r | |
263 | //\r | |
264 | // parse the command line\r | |
265 | //\r | |
266 | Status = ShellCommandLineParse (ParamList, &Package, &ProblemParam, TRUE);\r | |
267 | if (EFI_ERROR (Status)) {\r | |
ac0a286f MK |
268 | if ((Status == EFI_VOLUME_CORRUPTED) && (ProblemParam != NULL)) {\r |
269 | ShellPrintHiiEx (\r | |
270 | -1,\r | |
271 | -1,\r | |
272 | NULL,\r | |
273 | STRING_TOKEN (STR_GEN_PROBLEM),\r | |
274 | mLinuxInitrdShellCommandHiiHandle,\r | |
275 | L"initrd",\r | |
276 | ProblemParam\r | |
277 | );\r | |
2632178b AB |
278 | FreePool (ProblemParam);\r |
279 | ShellStatus = SHELL_INVALID_PARAMETER;\r | |
280 | } else {\r | |
ac0a286f | 281 | ASSERT (FALSE);\r |
2632178b | 282 | }\r |
ecb30848 | 283 | } else if (IsOtherInitrdDevicePathAlreadyInstalled ()) {\r |
ac0a286f MK |
284 | ShellPrintHiiEx (\r |
285 | -1,\r | |
286 | -1,\r | |
287 | NULL,\r | |
288 | STRING_TOKEN (STR_GEN_ALREADY_INSTALLED),\r | |
289 | mLinuxInitrdShellCommandHiiHandle,\r | |
290 | L"initrd"\r | |
291 | );\r | |
ecb30848 | 292 | ShellStatus = SHELL_UNSUPPORTED;\r |
2632178b AB |
293 | } else {\r |
294 | if (ShellCommandLineGetCount (Package) > 2) {\r | |
ac0a286f MK |
295 | ShellPrintHiiEx (\r |
296 | -1,\r | |
297 | -1,\r | |
298 | NULL,\r | |
299 | STRING_TOKEN (STR_GEN_TOO_MANY),\r | |
300 | mLinuxInitrdShellCommandHiiHandle,\r | |
301 | L"initrd"\r | |
302 | );\r | |
2632178b AB |
303 | ShellStatus = SHELL_INVALID_PARAMETER;\r |
304 | } else if (ShellCommandLineGetCount (Package) < 2) {\r | |
305 | if (ShellCommandLineGetFlag (Package, L"-u")) {\r | |
306 | FreeInitrdFile ();\r | |
307 | UninstallLoadFile2Protocol ();\r | |
308 | } else {\r | |
ac0a286f MK |
309 | ShellPrintHiiEx (\r |
310 | -1,\r | |
311 | -1,\r | |
312 | NULL,\r | |
313 | STRING_TOKEN (STR_GEN_TOO_FEW),\r | |
314 | mLinuxInitrdShellCommandHiiHandle,\r | |
315 | L"initrd"\r | |
316 | );\r | |
2632178b AB |
317 | ShellStatus = SHELL_INVALID_PARAMETER;\r |
318 | }\r | |
319 | } else {\r | |
320 | Param = ShellCommandLineGetRawValue (Package, 1);\r | |
321 | ASSERT (Param != NULL);\r | |
322 | \r | |
323 | Filename = ShellFindFilePath (Param);\r | |
324 | if (Filename == NULL) {\r | |
ac0a286f MK |
325 | ShellPrintHiiEx (\r |
326 | -1,\r | |
327 | -1,\r | |
328 | NULL,\r | |
329 | STRING_TOKEN (STR_GEN_FIND_FAIL),\r | |
330 | mLinuxInitrdShellCommandHiiHandle,\r | |
331 | L"initrd",\r | |
332 | Param\r | |
333 | );\r | |
2632178b AB |
334 | ShellStatus = SHELL_NOT_FOUND;\r |
335 | } else {\r | |
ac0a286f MK |
336 | Status = ShellOpenFileByName (\r |
337 | Filename,\r | |
338 | &FileHandle,\r | |
339 | EFI_FILE_MODE_READ,\r | |
340 | 0\r | |
341 | );\r | |
2632178b AB |
342 | if (!EFI_ERROR (Status)) {\r |
343 | FreeInitrdFile ();\r | |
344 | Status = CacheInitrdFile (FileHandle);\r | |
345 | ShellCloseFile (&FileHandle);\r | |
346 | }\r | |
ac0a286f | 347 | \r |
2632178b | 348 | if (EFI_ERROR (Status)) {\r |
ac0a286f MK |
349 | ShellPrintHiiEx (\r |
350 | -1,\r | |
351 | -1,\r | |
352 | NULL,\r | |
353 | STRING_TOKEN (STR_GEN_FILE_OPEN_FAIL),\r | |
354 | mLinuxInitrdShellCommandHiiHandle,\r | |
355 | L"initrd",\r | |
356 | Param\r | |
357 | );\r | |
2632178b AB |
358 | ShellStatus = SHELL_NOT_FOUND;\r |
359 | }\r | |
ac0a286f | 360 | \r |
2632178b AB |
361 | FreePool (Filename);\r |
362 | }\r | |
363 | }\r | |
364 | }\r | |
ac0a286f | 365 | \r |
2632178b AB |
366 | return ShellStatus;\r |
367 | }\r | |
368 | \r | |
2632178b AB |
369 | /**\r |
370 | This is the shell command handler function pointer callback type. This\r | |
371 | function handles the command when it is invoked in the shell.\r | |
372 | \r | |
373 | @param[in] This The instance of the\r | |
374 | EFI_SHELL_DYNAMIC_COMMAND_PROTOCOL.\r | |
375 | @param[in] SystemTable The pointer to the system table.\r | |
376 | @param[in] ShellParameters The parameters associated with the command.\r | |
377 | @param[in] Shell The instance of the shell protocol used in\r | |
378 | the context of processing this command.\r | |
379 | \r | |
380 | @return EFI_SUCCESS the operation was successful\r | |
381 | @return other the operation failed.\r | |
382 | **/\r | |
383 | SHELL_STATUS\r | |
384 | EFIAPI\r | |
385 | LinuxInitrdCommandHandler (\r | |
ac0a286f MK |
386 | IN EFI_SHELL_DYNAMIC_COMMAND_PROTOCOL *This,\r |
387 | IN EFI_SYSTEM_TABLE *SystemTable,\r | |
388 | IN EFI_SHELL_PARAMETERS_PROTOCOL *ShellParameters,\r | |
389 | IN EFI_SHELL_PROTOCOL *Shell\r | |
2632178b AB |
390 | )\r |
391 | {\r | |
392 | gEfiShellParametersProtocol = ShellParameters;\r | |
393 | gEfiShellProtocol = Shell;\r | |
394 | \r | |
395 | return RunInitrd (gImageHandle, SystemTable);\r | |
396 | }\r | |
397 | \r | |
398 | /**\r | |
399 | This is the command help handler function pointer callback type. This\r | |
400 | function is responsible for displaying help information for the associated\r | |
401 | command.\r | |
402 | \r | |
403 | @param[in] This The instance of the\r | |
404 | EFI_SHELL_DYNAMIC_COMMAND_PROTOCOL.\r | |
405 | @param[in] Language The pointer to the language string to use.\r | |
406 | \r | |
407 | @return string Pool allocated help string, must be freed\r | |
408 | by caller\r | |
409 | **/\r | |
410 | STATIC\r | |
411 | CHAR16 *\r | |
412 | EFIAPI\r | |
413 | LinuxInitrdGetHelp (\r | |
ac0a286f MK |
414 | IN EFI_SHELL_DYNAMIC_COMMAND_PROTOCOL *This,\r |
415 | IN CONST CHAR8 *Language\r | |
2632178b AB |
416 | )\r |
417 | {\r | |
ac0a286f MK |
418 | return HiiGetString (\r |
419 | mLinuxInitrdShellCommandHiiHandle,\r | |
420 | STRING_TOKEN (STR_GET_HELP_INITRD),\r | |
421 | Language\r | |
422 | );\r | |
2632178b AB |
423 | }\r |
424 | \r | |
ac0a286f | 425 | STATIC EFI_SHELL_DYNAMIC_COMMAND_PROTOCOL mLinuxInitrdDynamicCommand = {\r |
2632178b AB |
426 | L"initrd",\r |
427 | LinuxInitrdCommandHandler,\r | |
428 | LinuxInitrdGetHelp\r | |
429 | };\r | |
430 | \r | |
431 | /**\r | |
432 | Retrieve HII package list from ImageHandle and publish to HII database.\r | |
433 | \r | |
434 | @param ImageHandle The image handle of the process.\r | |
435 | \r | |
436 | @return HII handle.\r | |
437 | **/\r | |
438 | STATIC\r | |
439 | EFI_HII_HANDLE\r | |
440 | InitializeHiiPackage (\r | |
ac0a286f | 441 | EFI_HANDLE ImageHandle\r |
2632178b AB |
442 | )\r |
443 | {\r | |
ac0a286f MK |
444 | EFI_STATUS Status;\r |
445 | EFI_HII_PACKAGE_LIST_HEADER *PackageList;\r | |
446 | EFI_HII_HANDLE HiiHandle;\r | |
2632178b AB |
447 | \r |
448 | //\r | |
449 | // Retrieve HII package list from ImageHandle\r | |
450 | //\r | |
ac0a286f MK |
451 | Status = gBS->OpenProtocol (\r |
452 | ImageHandle,\r | |
453 | &gEfiHiiPackageListProtocolGuid,\r | |
454 | (VOID **)&PackageList,\r | |
455 | ImageHandle,\r | |
456 | NULL,\r | |
457 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
458 | );\r | |
2632178b AB |
459 | ASSERT_EFI_ERROR (Status);\r |
460 | if (EFI_ERROR (Status)) {\r | |
461 | return NULL;\r | |
462 | }\r | |
463 | \r | |
464 | //\r | |
465 | // Publish HII package list to HII Database.\r | |
466 | //\r | |
ac0a286f MK |
467 | Status = gHiiDatabase->NewPackageList (\r |
468 | gHiiDatabase,\r | |
469 | PackageList,\r | |
470 | NULL,\r | |
471 | &HiiHandle\r | |
472 | );\r | |
2632178b AB |
473 | ASSERT_EFI_ERROR (Status);\r |
474 | if (EFI_ERROR (Status)) {\r | |
475 | return NULL;\r | |
476 | }\r | |
ac0a286f | 477 | \r |
2632178b AB |
478 | return HiiHandle;\r |
479 | }\r | |
480 | \r | |
481 | /**\r | |
482 | Entry point of Linux Initrd dynamic UEFI Shell command.\r | |
483 | \r | |
484 | Produce the DynamicCommand protocol to handle "initrd" command.\r | |
485 | \r | |
486 | @param ImageHandle The image handle of the process.\r | |
487 | @param SystemTable The EFI System Table pointer.\r | |
488 | \r | |
489 | @retval EFI_SUCCESS Initrd command is executed successfully.\r | |
490 | @retval EFI_ABORTED HII package was failed to initialize.\r | |
491 | @retval others Other errors when executing Initrd command.\r | |
492 | **/\r | |
493 | EFI_STATUS\r | |
494 | EFIAPI\r | |
495 | LinuxInitrdDynamicShellCommandEntryPoint (\r | |
ac0a286f MK |
496 | IN EFI_HANDLE ImageHandle,\r |
497 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
2632178b AB |
498 | )\r |
499 | {\r | |
ac0a286f | 500 | EFI_STATUS Status;\r |
2632178b AB |
501 | \r |
502 | mLinuxInitrdShellCommandHiiHandle = InitializeHiiPackage (ImageHandle);\r | |
503 | if (mLinuxInitrdShellCommandHiiHandle == NULL) {\r | |
504 | return EFI_ABORTED;\r | |
505 | }\r | |
506 | \r | |
ac0a286f MK |
507 | Status = gBS->InstallProtocolInterface (\r |
508 | &ImageHandle,\r | |
2632178b AB |
509 | &gEfiShellDynamicCommandProtocolGuid,\r |
510 | EFI_NATIVE_INTERFACE,\r | |
ac0a286f MK |
511 | &mLinuxInitrdDynamicCommand\r |
512 | );\r | |
2632178b AB |
513 | ASSERT_EFI_ERROR (Status);\r |
514 | return Status;\r | |
515 | }\r | |
516 | \r | |
517 | /**\r | |
518 | Unload the dynamic UEFI Shell command.\r | |
519 | \r | |
520 | @param ImageHandle The image handle of the process.\r | |
521 | \r | |
522 | @retval EFI_SUCCESS The image is unloaded.\r | |
523 | @retval Others Failed to unload the image.\r | |
524 | **/\r | |
525 | EFI_STATUS\r | |
526 | EFIAPI\r | |
527 | LinuxInitrdDynamicShellCommandUnload (\r | |
ac0a286f MK |
528 | IN EFI_HANDLE ImageHandle\r |
529 | )\r | |
2632178b | 530 | {\r |
ac0a286f | 531 | EFI_STATUS Status;\r |
2632178b AB |
532 | \r |
533 | FreeInitrdFile ();\r | |
534 | \r | |
535 | Status = UninstallLoadFile2Protocol ();\r | |
536 | if (EFI_ERROR (Status)) {\r | |
537 | return Status;\r | |
538 | }\r | |
539 | \r | |
ac0a286f MK |
540 | Status = gBS->UninstallProtocolInterface (\r |
541 | ImageHandle,\r | |
2632178b | 542 | &gEfiShellDynamicCommandProtocolGuid,\r |
ac0a286f MK |
543 | &mLinuxInitrdDynamicCommand\r |
544 | );\r | |
2632178b AB |
545 | if (EFI_ERROR (Status)) {\r |
546 | return Status;\r | |
547 | }\r | |
548 | \r | |
549 | HiiRemovePackages (mLinuxInitrdShellCommandHiiHandle);\r | |
550 | return EFI_SUCCESS;\r | |
551 | }\r |