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1 | /**\r |
2 | \r | |
3 | Copyright (c) 2016, Microsoft Corporation\r | |
4 | \r | |
5 | All rights reserved.\r | |
9dc8036d | 6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
dc65dd5b MK |
7 | \r |
8 | **/\r | |
9 | \r | |
10 | \r | |
11 | #include <PiDxe.h>\r | |
12 | #include <Library/DebugLib.h>\r | |
13 | #include <Protocol/FirmwareManagement.h>\r | |
14 | #include <Library/BaseLib.h>\r | |
15 | #include <Library/MemoryAllocationLib.h>\r | |
16 | #include <Library/BaseMemoryLib.h>\r | |
17 | #include <Library/FmpDeviceLib.h>\r | |
18 | #include <Library/UefiBootServicesTableLib.h>\r | |
19 | \r | |
20 | /**\r | |
21 | Used to pass the FMP install function to this lib.\r | |
22 | This allows the library to have control of the handle\r | |
23 | that the FMP instance is installed on. This allows the library\r | |
24 | to use DriverBinding protocol model to locate its device(s) in the\r | |
25 | system.\r | |
26 | \r | |
27 | @param[in] Function pointer to FMP install function.\r | |
28 | \r | |
29 | @retval EFI_SUCCESS Library has saved function pointer and will call function pointer on each DriverBinding Start.\r | |
30 | @retval EFI_UNSUPPORTED Library doesn't use driver binding and only supports a single instance.\r | |
31 | @retval other error Error occurred. Don't install FMP\r | |
32 | \r | |
33 | **/\r | |
34 | EFI_STATUS\r | |
35 | EFIAPI\r | |
36 | RegisterFmpInstaller(\r | |
37 | IN FMP_DEVICE_LIB_REGISTER_FMP_INSTALLER Func\r | |
38 | )\r | |
39 | {\r | |
40 | // Because this is a sample lib with very simple fake device we don't use\r | |
41 | // the driverbinding protocol to locate our device.\r | |
42 | //\r | |
43 | return EFI_UNSUPPORTED;\r | |
44 | }\r | |
45 | \r | |
46 | \r | |
47 | /**\r | |
48 | Used to get the size of the image in bytes.\r | |
49 | NOTE - Do not return zero as that will identify the device as\r | |
50 | not updatable.\r | |
51 | \r | |
52 | @retval UINTN that represents the size of the firmware.\r | |
53 | \r | |
54 | **/\r | |
55 | EFI_STATUS\r | |
56 | EFIAPI\r | |
57 | FmpDeviceGetSize (\r | |
58 | IN UINTN *Size\r | |
59 | )\r | |
60 | {\r | |
61 | if (Size == NULL) {\r | |
62 | return EFI_INVALID_PARAMETER;\r | |
63 | }\r | |
64 | *Size = 0x1000;\r | |
65 | return EFI_SUCCESS;\r | |
66 | }\r | |
67 | \r | |
68 | /**\r | |
69 | Used to return a library supplied guid that will be the ImageTypeId guid of the FMP descriptor.\r | |
70 | This is optional but can be used if at runtime the guid needs to be determined.\r | |
71 | \r | |
72 | @param Guid: Double Guid Ptr that will be updated to point to guid. This should be from static memory\r | |
73 | and will not be freed.\r | |
74 | @return EFI_UNSUPPORTED: if you library instance doesn't need dynamic guid return this.\r | |
75 | @return Error: Any error will cause the wrapper to use the GUID defined by PCD\r | |
76 | @return EFI_SUCCESS: Guid ptr should be updated to point to static memeory which contains a valid guid\r | |
77 | **/\r | |
78 | EFI_STATUS\r | |
79 | EFIAPI\r | |
80 | FmpDeviceGetImageTypeIdGuidPtr(\r | |
81 | OUT EFI_GUID** Guid)\r | |
82 | {\r | |
83 | //this instance doesn't need dynamic guid detection.\r | |
84 | return EFI_UNSUPPORTED;\r | |
85 | }\r | |
86 | \r | |
87 | /**\r | |
88 | Returns values used to fill in the AttributesSupported and AttributesSettings\r | |
89 | fields of the EFI_FIRMWARE_IMAGE_DESCRIPTOR structure that is returned by the\r | |
90 | GetImageInfo() service of the Firmware Management Protocol. The following\r | |
91 | bit values from the Firmware Management Protocol may be combined:\r | |
92 | IMAGE_ATTRIBUTE_IMAGE_UPDATABLE\r | |
93 | IMAGE_ATTRIBUTE_RESET_REQUIRED\r | |
94 | IMAGE_ATTRIBUTE_AUTHENTICATION_REQUIRED\r | |
95 | IMAGE_ATTRIBUTE_IN_USE\r | |
96 | IMAGE_ATTRIBUTE_UEFI_IMAGE\r | |
97 | \r | |
98 | @param[out] Supported Attributes supported by this firmware device.\r | |
99 | @param[out] Setting Attributes settings for this firmware device.\r | |
100 | \r | |
101 | @retval EFI_SUCCESS The attributes supported by the firmware\r | |
102 | device were returned.\r | |
103 | @retval EFI_INVALID_PARAMETER Supported is NULL.\r | |
104 | @retval EFI_INVALID_PARAMETER Setting is NULL.\r | |
105 | \r | |
106 | **/\r | |
107 | EFI_STATUS\r | |
108 | EFIAPI\r | |
109 | FmpDeviceGetAttributes (\r | |
110 | IN OUT UINT64 *Supported,\r | |
111 | IN OUT UINT64 *Setting\r | |
112 | )\r | |
113 | {\r | |
114 | if (Supported == NULL || Setting == NULL) {\r | |
115 | return EFI_INVALID_PARAMETER;\r | |
116 | }\r | |
117 | *Supported = (IMAGE_ATTRIBUTE_IMAGE_UPDATABLE | IMAGE_ATTRIBUTE_IN_USE);\r | |
118 | *Setting = (IMAGE_ATTRIBUTE_IMAGE_UPDATABLE | IMAGE_ATTRIBUTE_IN_USE);\r | |
119 | return EFI_SUCCESS;\r | |
120 | }\r | |
121 | \r | |
122 | /**\r | |
123 | Gets the current Lowest Supported Version.\r | |
124 | This is a protection mechanism so that a previous version with known issue is not\r | |
125 | applied.\r | |
126 | \r | |
127 | ONLY implement this if your running firmware has a method to return this at runtime.\r | |
128 | \r | |
129 | @param[out] Version On return this value represents the\r | |
130 | current Lowest Supported Version (in same format as GetVersion).\r | |
131 | \r | |
132 | @retval EFI_SUCCESS The Lowest Supported Version was correctly retrieved\r | |
133 | @retval EFI_UNSUPPORTED Device firmware doesn't support reporting LSV\r | |
134 | @retval EFI_DEVICE_ERROR Error occurred when trying to get the LSV\r | |
135 | **/\r | |
136 | EFI_STATUS\r | |
137 | EFIAPI\r | |
138 | FmpDeviceGetLowestSupportedVersion (\r | |
139 | IN OUT UINT32* LowestSupportedVersion\r | |
140 | )\r | |
141 | {\r | |
142 | return EFI_UNSUPPORTED;\r | |
143 | }\r | |
144 | \r | |
145 | \r | |
146 | /**\r | |
147 | Returns the Null-terminated Unicode string that is used to fill in the\r | |
148 | VersionName field of the EFI_FIRMWARE_IMAGE_DESCRIPTOR structure that is\r | |
149 | returned by the GetImageInfo() service of the Firmware Management Protocol.\r | |
150 | The returned string must be allocated using EFI_BOOT_SERVICES.AllocatePool().\r | |
151 | \r | |
152 | @note It is recommended that all firmware devices support a method to report\r | |
153 | the VersionName string from the currently stored firmware image.\r | |
154 | \r | |
155 | @param[out] VersionString The version string retrieved from the currently\r | |
156 | stored firmware image.\r | |
157 | \r | |
158 | @retval EFI_SUCCESS The version string of currently stored\r | |
159 | firmware image was returned in Version.\r | |
160 | @retval EFI_INVALID_PARAMETER VersionString is NULL.\r | |
161 | @retval EFI_UNSUPPORTED The firmware device does not support a method\r | |
162 | to report the version string of the currently\r | |
163 | stored firmware image.\r | |
164 | @retval EFI_DEVICE_ERROR An error occurred attempting to retrieve the\r | |
165 | version string of the currently stored\r | |
166 | firmware image.\r | |
167 | @retval EFI_OUT_OF_RESOURCES There are not enough resources to allocate the\r | |
168 | buffer for the version string of the currently\r | |
169 | stored firmware image.\r | |
170 | \r | |
171 | **/\r | |
172 | EFI_STATUS\r | |
173 | EFIAPI\r | |
174 | FmpDeviceGetVersionString (\r | |
175 | OUT CHAR16 **VersionString\r | |
176 | )\r | |
177 | {\r | |
178 | if (VersionString == NULL) {\r | |
179 | return EFI_INVALID_PARAMETER;\r | |
180 | }\r | |
181 | *VersionString = NULL;\r | |
182 | return EFI_UNSUPPORTED;\r | |
183 | }\r | |
184 | \r | |
185 | /**\r | |
186 | Gets the current running version.\r | |
187 | ONLY implement this if your running firmware has a method to return this at runtime.\r | |
188 | \r | |
189 | @param[out] Version On return this value represents the current running version\r | |
190 | \r | |
191 | @retval EFI_SUCCESS The version was correctly retrieved\r | |
192 | @retval EFI_UNSUPPORTED Device firmware doesn't support reporting current version\r | |
193 | @retval EFI_DEVICE_ERROR Error occurred when trying to get the version\r | |
194 | **/\r | |
195 | EFI_STATUS\r | |
196 | EFIAPI\r | |
197 | FmpDeviceGetVersion(\r | |
198 | IN OUT UINT32* Version\r | |
199 | )\r | |
200 | {\r | |
201 | return EFI_UNSUPPORTED;\r | |
202 | }\r | |
203 | \r | |
204 | \r | |
205 | /**\r | |
206 | Retrieves a copy of the current firmware image of the device.\r | |
207 | \r | |
208 | This function allows a copy of the current firmware image to be created and saved.\r | |
209 | The saved copy could later been used, for example, in firmware image recovery or rollback.\r | |
210 | \r | |
211 | @param[out] Image Points to the buffer where the current image is copied to.\r | |
212 | @param[out] ImageSize On entry, points to the size of the buffer pointed to by Image, in bytes.\r | |
213 | On return, points to the length of the image, in bytes.\r | |
214 | \r | |
215 | @retval EFI_SUCCESS The device was successfully updated with the new image.\r | |
216 | @retval EFI_BUFFER_TOO_SMALL The buffer specified by ImageSize is too small to hold the\r | |
217 | image. The current buffer size needed to hold the image is returned\r | |
218 | in ImageSize.\r | |
219 | @retval EFI_INVALID_PARAMETER The Image was NULL.\r | |
220 | @retval EFI_NOT_FOUND The current image is not copied to the buffer.\r | |
221 | @retval EFI_UNSUPPORTED The operation is not supported.\r | |
222 | \r | |
223 | **/\r | |
224 | EFI_STATUS\r | |
225 | EFIAPI\r | |
226 | FmpDeviceGetImage(\r | |
227 | IN OUT VOID *Image,\r | |
228 | IN OUT UINTN *ImageSize\r | |
229 | )\r | |
230 | /*++\r | |
231 | \r | |
232 | Routine Description:\r | |
233 | \r | |
234 | This is a function used to read the current firmware from the device into memory.\r | |
235 | This is an optional function and can return EFI_UNSUPPORTED. This is useful for\r | |
236 | test and diagnostics.\r | |
237 | \r | |
238 | Arguments:\r | |
239 | Image -- Buffer to place the image into.\r | |
240 | ImageSize -- Size of the Image buffer.\r | |
241 | \r | |
242 | Return Value:\r | |
243 | \r | |
244 | EFI_STATUS code.\r | |
245 | If not possible or not practical return EFI_UNSUPPORTED.\r | |
246 | \r | |
247 | --*/\r | |
248 | {\r | |
249 | return EFI_UNSUPPORTED;\r | |
250 | }//GetImage()\r | |
251 | \r | |
252 | \r | |
253 | /**\r | |
254 | Updates the firmware image of the device.\r | |
255 | \r | |
256 | This function updates the hardware with the new firmware image.\r | |
257 | This function returns EFI_UNSUPPORTED if the firmware image is not updatable.\r | |
258 | If the firmware image is updatable, the function should perform the following minimal validations\r | |
259 | before proceeding to do the firmware image update.\r | |
260 | - Validate the image is a supported image for this device. The function returns EFI_ABORTED if\r | |
261 | the image is unsupported. The function can optionally provide more detailed information on\r | |
262 | why the image is not a supported image.\r | |
263 | - Validate the data from VendorCode if not null. Image validation must be performed before\r | |
264 | VendorCode data validation. VendorCode data is ignored or considered invalid if image\r | |
265 | validation failed. The function returns EFI_ABORTED if the data is invalid.\r | |
266 | \r | |
267 | VendorCode enables vendor to implement vendor-specific firmware image update policy. Null if\r | |
268 | the caller did not specify the policy or use the default policy. As an example, vendor can implement\r | |
269 | a policy to allow an option to force a firmware image update when the abort reason is due to the new\r | |
270 | firmware image version is older than the current firmware image version or bad image checksum.\r | |
271 | Sensitive operations such as those wiping the entire firmware image and render the device to be\r | |
272 | non-functional should be encoded in the image itself rather than passed with the VendorCode.\r | |
273 | AbortReason enables vendor to have the option to provide a more detailed description of the abort\r | |
274 | reason to the caller.\r | |
275 | \r | |
276 | @param[in] Image Points to the new image.\r | |
277 | @param[in] ImageSize Size of the new image in bytes.\r | |
278 | @param[in] VendorCode This enables vendor to implement vendor-specific firmware image update policy.\r | |
279 | Null indicates the caller did not specify the policy or use the default policy.\r | |
280 | @param[in] Progress A function used by the driver to report the progress of the firmware update.\r | |
281 | @param[in] CapsuleFwVersion FMP Payload Header version of the image\r | |
282 | @param[out] AbortReason A pointer to a pointer to a null-terminated string providing more\r | |
283 | details for the aborted operation. The buffer is allocated by this function\r | |
284 | with AllocatePool(), and it is the caller's responsibility to free it with a\r | |
285 | call to FreePool().\r | |
286 | \r | |
287 | @retval EFI_SUCCESS The device was successfully updated with the new image.\r | |
288 | @retval EFI_ABORTED The operation is aborted.\r | |
289 | @retval EFI_INVALID_PARAMETER The Image was NULL.\r | |
290 | @retval EFI_UNSUPPORTED The operation is not supported.\r | |
291 | \r | |
292 | **/\r | |
293 | EFI_STATUS\r | |
294 | EFIAPI\r | |
295 | FmpDeviceSetImage (\r | |
296 | IN CONST VOID *Image,\r | |
297 | IN UINTN ImageSize,\r | |
298 | IN CONST VOID *VendorCode,\r | |
299 | IN EFI_FIRMWARE_MANAGEMENT_UPDATE_IMAGE_PROGRESS Progress,\r | |
300 | IN UINT32 CapsuleFwVersion,\r | |
301 | OUT CHAR16 **AbortReason\r | |
302 | )\r | |
303 | {\r | |
304 | EFI_STATUS Status = EFI_SUCCESS;\r | |
305 | UINT32 Updateable = 0;\r | |
306 | \r | |
307 | Status = FmpDeviceCheckImage(Image, ImageSize, &Updateable);\r | |
308 | if (EFI_ERROR(Status))\r | |
309 | {\r | |
310 | DEBUG((DEBUG_ERROR, "SetImage - Check Image failed with %r.\n", Status));\r | |
311 | goto cleanup;\r | |
312 | }\r | |
313 | \r | |
314 | if (Updateable != IMAGE_UPDATABLE_VALID)\r | |
315 | {\r | |
316 | DEBUG((DEBUG_ERROR, "SetImage - Check Image returned that the Image was not valid for update. Updatable value = 0x%X.\n", Updateable));\r | |
317 | Status = EFI_ABORTED;\r | |
318 | goto cleanup;\r | |
319 | }\r | |
320 | \r | |
321 | if (Progress == NULL)\r | |
322 | {\r | |
323 | DEBUG((DEBUG_ERROR, "SetImage - Invalid progress callback\n"));\r | |
324 | Status = EFI_INVALID_PARAMETER;\r | |
325 | goto cleanup;\r | |
326 | }\r | |
327 | \r | |
328 | Status = Progress(15);\r | |
329 | if (EFI_ERROR(Status))\r | |
330 | {\r | |
331 | DEBUG((DEBUG_ERROR, "SetImage - Progress Callback failed with Status %r.\n", Status));\r | |
332 | }\r | |
333 | \r | |
334 | {\r | |
335 | UINTN p;\r | |
336 | \r | |
337 | for (p = 20; p < 100; p++) {\r | |
338 | gBS->Stall (100000); //us = 0.1 seconds\r | |
339 | Progress (p);\r | |
340 | }\r | |
341 | }\r | |
342 | \r | |
343 | //TODO: add support for VendorCode, and AbortReason\r | |
344 | cleanup:\r | |
345 | return Status;\r | |
346 | }// SetImage()\r | |
347 | \r | |
348 | \r | |
349 | \r | |
350 | /**\r | |
351 | Checks if the firmware image is valid for the device.\r | |
352 | \r | |
353 | This function allows firmware update application to validate the firmware image without\r | |
354 | invoking the SetImage() first.\r | |
355 | \r | |
356 | @param[in] Image Points to the new image.\r | |
357 | @param[in] ImageSize Size of the new image in bytes.\r | |
358 | @param[out] ImageUpdatable Indicates if the new image is valid for update. It also provides,\r | |
359 | if available, additional information if the image is invalid.\r | |
360 | \r | |
361 | @retval EFI_SUCCESS The image was successfully checked.\r | |
362 | @retval EFI_INVALID_PARAMETER The Image was NULL.\r | |
363 | \r | |
364 | **/\r | |
365 | EFI_STATUS\r | |
366 | EFIAPI\r | |
367 | FmpDeviceCheckImage(\r | |
368 | IN CONST VOID *Image,\r | |
369 | IN UINTN ImageSize,\r | |
370 | OUT UINT32 *ImageUpdateable\r | |
371 | )\r | |
372 | {\r | |
373 | EFI_STATUS status = EFI_SUCCESS;\r | |
374 | \r | |
375 | if (ImageUpdateable == NULL)\r | |
376 | {\r | |
377 | DEBUG((DEBUG_ERROR, "CheckImage - ImageUpdateable Pointer Parameter is NULL.\n"));\r | |
378 | status = EFI_INVALID_PARAMETER;\r | |
379 | goto cleanup;\r | |
380 | }\r | |
381 | \r | |
382 | //\r | |
383 | //Set to valid and then if any tests fail it will update this flag.\r | |
384 | //\r | |
385 | *ImageUpdateable = IMAGE_UPDATABLE_VALID;\r | |
386 | \r | |
387 | if (Image == NULL)\r | |
388 | {\r | |
389 | DEBUG((DEBUG_ERROR, "CheckImage - Image Pointer Parameter is NULL.\n"));\r | |
390 | *ImageUpdateable = IMAGE_UPDATABLE_INVALID; //not sure if this is needed\r | |
391 | return EFI_INVALID_PARAMETER;\r | |
392 | }\r | |
393 | \r | |
394 | cleanup:\r | |
395 | return status;\r | |
396 | }// CheckImage()\r | |
397 | \r | |
398 | /**\r | |
399 | Device firmware should trigger lock mechanism so that device fw can not be updated or tampered with.\r | |
400 | This lock mechanism is generally only cleared by a full system reset (not just sleep state/low power mode)\r | |
401 | \r | |
402 | @retval EFI_SUCCESS The device was successfully locked.\r | |
403 | @retval EFI_UNSUPPORTED The hardware device/firmware doesn't support locking\r | |
404 | \r | |
405 | **/\r | |
406 | EFI_STATUS\r | |
407 | EFIAPI\r | |
408 | FmpDeviceLock(\r | |
409 | )\r | |
410 | {\r | |
411 | return EFI_SUCCESS;\r | |
412 | }\r |