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Commit | Line | Data |
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88266859 JY |
1 | /** @file\r |
2 | SetImage instance to update Microcode.\r | |
3 | \r | |
4 | Caution: This module requires additional review when modified.\r | |
5 | This module will have external input - capsule image.\r | |
6 | This external input must be validated carefully to avoid security issue like\r | |
7 | buffer overflow, integer overflow.\r | |
8 | \r | |
9 | MicrocodeWrite() and VerifyMicrocode() will receive untrusted input and do basic validation.\r | |
10 | \r | |
1db271df | 11 | Copyright (c) 2016 - 2018, Intel Corporation. All rights reserved.<BR>\r |
8f7a05e1 | 12 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
88266859 JY |
13 | \r |
14 | **/\r | |
15 | \r | |
16 | #include "MicrocodeUpdate.h"\r | |
17 | \r | |
18 | /**\r | |
19 | Get Microcode Region.\r | |
20 | \r | |
21 | @param[out] MicrocodePatchAddress The address of Microcode\r | |
22 | @param[out] MicrocodePatchRegionSize The region size of Microcode\r | |
23 | \r | |
24 | @retval TRUE The Microcode region is returned.\r | |
25 | @retval FALSE No Microcode region.\r | |
26 | **/\r | |
27 | BOOLEAN\r | |
28 | GetMicrocodeRegion (\r | |
2ed65824 JY |
29 | OUT VOID **MicrocodePatchAddress,\r |
30 | OUT UINTN *MicrocodePatchRegionSize\r | |
88266859 JY |
31 | )\r |
32 | {\r | |
2ed65824 JY |
33 | *MicrocodePatchAddress = (VOID *)(UINTN)PcdGet64(PcdCpuMicrocodePatchAddress);\r |
34 | *MicrocodePatchRegionSize = (UINTN)PcdGet64(PcdCpuMicrocodePatchRegionSize);\r | |
88266859 | 35 | \r |
2ed65824 | 36 | if ((*MicrocodePatchAddress == NULL) || (*MicrocodePatchRegionSize == 0)) {\r |
88266859 JY |
37 | return FALSE;\r |
38 | }\r | |
39 | \r | |
40 | return TRUE;\r | |
41 | }\r | |
42 | \r | |
43 | /**\r | |
44 | Get Microcode update signature of currently loaded Microcode update.\r | |
45 | \r | |
46 | @return Microcode signature.\r | |
47 | \r | |
48 | **/\r | |
49 | UINT32\r | |
50 | GetCurrentMicrocodeSignature (\r | |
51 | VOID\r | |
52 | )\r | |
53 | {\r | |
54 | UINT64 Signature;\r | |
55 | \r | |
56 | AsmWriteMsr64(MSR_IA32_BIOS_SIGN_ID, 0);\r | |
57 | AsmCpuid(CPUID_VERSION_INFO, NULL, NULL, NULL, NULL);\r | |
58 | Signature = AsmReadMsr64(MSR_IA32_BIOS_SIGN_ID);\r | |
59 | return (UINT32)RShiftU64(Signature, 32);\r | |
60 | }\r | |
61 | \r | |
62 | /**\r | |
63 | Get current processor signature.\r | |
64 | \r | |
65 | @return current processor signature.\r | |
66 | **/\r | |
67 | UINT32\r | |
68 | GetCurrentProcessorSignature (\r | |
69 | VOID\r | |
70 | )\r | |
71 | {\r | |
72 | UINT32 RegEax;\r | |
73 | AsmCpuid(CPUID_VERSION_INFO, &RegEax, NULL, NULL, NULL);\r | |
74 | return RegEax;\r | |
75 | }\r | |
76 | \r | |
77 | /**\r | |
78 | Get current platform ID.\r | |
79 | \r | |
80 | @return current platform ID.\r | |
81 | **/\r | |
82 | UINT8\r | |
83 | GetCurrentPlatformId (\r | |
84 | VOID\r | |
85 | )\r | |
86 | {\r | |
87 | UINT8 PlatformId;\r | |
88 | \r | |
89 | PlatformId = (UINT8)AsmMsrBitFieldRead64(MSR_IA32_PLATFORM_ID, 50, 52);\r | |
90 | return PlatformId;\r | |
91 | }\r | |
92 | \r | |
93 | /**\r | |
94 | Load new Microcode.\r | |
95 | \r | |
96 | @param[in] Address The address of new Microcode.\r | |
97 | \r | |
98 | @return Loaded Microcode signature.\r | |
99 | \r | |
100 | **/\r | |
101 | UINT32\r | |
102 | LoadMicrocode (\r | |
103 | IN UINT64 Address\r | |
104 | )\r | |
105 | {\r | |
106 | AsmWriteMsr64(MSR_IA32_BIOS_UPDT_TRIG, Address);\r | |
107 | return GetCurrentMicrocodeSignature();\r | |
108 | }\r | |
109 | \r | |
2ed65824 | 110 | /**\r |
31d060d9 JY |
111 | Load Microcode on an Application Processor.\r |
112 | The function prototype for invoking a function on an Application Processor.\r | |
113 | \r | |
114 | @param[in,out] Buffer The pointer to private data buffer.\r | |
115 | **/\r | |
116 | VOID\r | |
117 | EFIAPI\r | |
118 | MicrocodeLoadAp (\r | |
119 | IN OUT VOID *Buffer\r | |
120 | )\r | |
121 | {\r | |
122 | MICROCODE_LOAD_BUFFER *MicrocodeLoadBuffer;\r | |
123 | \r | |
124 | MicrocodeLoadBuffer = Buffer;\r | |
125 | MicrocodeLoadBuffer->Revision = LoadMicrocode (MicrocodeLoadBuffer->Address);\r | |
126 | }\r | |
127 | \r | |
128 | /**\r | |
129 | Load new Microcode on this processor\r | |
2ed65824 | 130 | \r |
31d060d9 JY |
131 | @param[in] MicrocodeFmpPrivate The Microcode driver private data\r |
132 | @param[in] CpuIndex The index of the processor.\r | |
133 | @param[in] Address The address of new Microcode.\r | |
134 | \r | |
135 | @return Loaded Microcode signature.\r | |
2ed65824 | 136 | \r |
2ed65824 | 137 | **/\r |
31d060d9 JY |
138 | UINT32\r |
139 | LoadMicrocodeOnThis (\r | |
140 | IN MICROCODE_FMP_PRIVATE_DATA *MicrocodeFmpPrivate,\r | |
141 | IN UINTN CpuIndex,\r | |
142 | IN UINT64 Address\r | |
2ed65824 JY |
143 | )\r |
144 | {\r | |
31d060d9 JY |
145 | EFI_STATUS Status;\r |
146 | EFI_MP_SERVICES_PROTOCOL *MpService;\r | |
147 | MICROCODE_LOAD_BUFFER MicrocodeLoadBuffer;\r | |
2ed65824 | 148 | \r |
31d060d9 JY |
149 | if (CpuIndex == MicrocodeFmpPrivate->BspIndex) {\r |
150 | return LoadMicrocode (Address);\r | |
151 | } else {\r | |
152 | MpService = MicrocodeFmpPrivate->MpService;\r | |
153 | MicrocodeLoadBuffer.Address = Address;\r | |
154 | MicrocodeLoadBuffer.Revision = 0;\r | |
155 | Status = MpService->StartupThisAP (\r | |
156 | MpService,\r | |
157 | MicrocodeLoadAp,\r | |
158 | CpuIndex,\r | |
159 | NULL,\r | |
160 | 0,\r | |
161 | &MicrocodeLoadBuffer,\r | |
162 | NULL\r | |
163 | );\r | |
164 | ASSERT_EFI_ERROR(Status);\r | |
165 | return MicrocodeLoadBuffer.Revision;\r | |
2ed65824 | 166 | }\r |
31d060d9 JY |
167 | }\r |
168 | \r | |
169 | /**\r | |
170 | Collect processor information.\r | |
171 | The function prototype for invoking a function on an Application Processor.\r | |
172 | \r | |
173 | @param[in,out] Buffer The pointer to private data buffer.\r | |
174 | **/\r | |
175 | VOID\r | |
176 | EFIAPI\r | |
177 | CollectProcessorInfo (\r | |
178 | IN OUT VOID *Buffer\r | |
179 | )\r | |
180 | {\r | |
181 | PROCESSOR_INFO *ProcessorInfo;\r | |
182 | \r | |
183 | ProcessorInfo = Buffer;\r | |
184 | ProcessorInfo->ProcessorSignature = GetCurrentProcessorSignature();\r | |
185 | ProcessorInfo->PlatformId = GetCurrentPlatformId();\r | |
186 | ProcessorInfo->MicrocodeRevision = GetCurrentMicrocodeSignature();\r | |
2ed65824 JY |
187 | }\r |
188 | \r | |
88266859 JY |
189 | /**\r |
190 | Get current Microcode information.\r | |
191 | \r | |
31d060d9 JY |
192 | The ProcessorInformation (BspIndex/ProcessorCount/ProcessorInfo)\r |
193 | in MicrocodeFmpPrivate must be initialized.\r | |
194 | \r | |
195 | The MicrocodeInformation (DescriptorCount/ImageDescriptor/MicrocodeInfo)\r | |
196 | in MicrocodeFmpPrivate may not be avaiable in this function.\r | |
2ed65824 JY |
197 | \r |
198 | @param[in] MicrocodeFmpPrivate The Microcode driver private data\r | |
199 | @param[in] DescriptorCount The count of Microcode ImageDescriptor allocated.\r | |
200 | @param[out] ImageDescriptor Microcode ImageDescriptor\r | |
201 | @param[out] MicrocodeInfo Microcode information\r | |
88266859 JY |
202 | \r |
203 | @return Microcode count\r | |
204 | **/\r | |
205 | UINTN\r | |
206 | GetMicrocodeInfo (\r | |
2ed65824 JY |
207 | IN MICROCODE_FMP_PRIVATE_DATA *MicrocodeFmpPrivate,\r |
208 | IN UINTN DescriptorCount, OPTIONAL\r | |
88266859 | 209 | OUT EFI_FIRMWARE_IMAGE_DESCRIPTOR *ImageDescriptor, OPTIONAL\r |
2ed65824 | 210 | OUT MICROCODE_INFO *MicrocodeInfo OPTIONAL\r |
88266859 JY |
211 | )\r |
212 | {\r | |
2ed65824 JY |
213 | VOID *MicrocodePatchAddress;\r |
214 | UINTN MicrocodePatchRegionSize;\r | |
88266859 JY |
215 | CPU_MICROCODE_HEADER *MicrocodeEntryPoint;\r |
216 | UINTN MicrocodeEnd;\r | |
217 | UINTN TotalSize;\r | |
218 | UINTN Count;\r | |
219 | UINT64 ImageAttributes;\r | |
2ed65824 | 220 | BOOLEAN IsInUse;\r |
31d060d9 JY |
221 | EFI_STATUS Status;\r |
222 | UINT32 AttemptStatus;\r | |
223 | UINTN TargetCpuIndex;\r | |
88266859 | 224 | \r |
2ed65824 JY |
225 | MicrocodePatchAddress = MicrocodeFmpPrivate->MicrocodePatchAddress;\r |
226 | MicrocodePatchRegionSize = MicrocodeFmpPrivate->MicrocodePatchRegionSize;\r | |
227 | \r | |
228 | DEBUG((DEBUG_INFO, "Microcode Region - 0x%x - 0x%x\n", MicrocodePatchAddress, MicrocodePatchRegionSize));\r | |
88266859 JY |
229 | \r |
230 | Count = 0;\r | |
88266859 | 231 | \r |
2ed65824 | 232 | MicrocodeEnd = (UINTN)MicrocodePatchAddress + MicrocodePatchRegionSize;\r |
88266859 JY |
233 | MicrocodeEntryPoint = (CPU_MICROCODE_HEADER *) (UINTN) MicrocodePatchAddress;\r |
234 | do {\r | |
235 | if (MicrocodeEntryPoint->HeaderVersion == 0x1 && MicrocodeEntryPoint->LoaderRevision == 0x1) {\r | |
236 | //\r | |
237 | // It is the microcode header. It is not the padding data between microcode patches\r | |
238 | // becasue the padding data should not include 0x00000001 and it should be the repeated\r | |
239 | // byte format (like 0xXYXYXYXY....).\r | |
240 | //\r | |
241 | if (MicrocodeEntryPoint->DataSize == 0) {\r | |
242 | TotalSize = 2048;\r | |
243 | } else {\r | |
244 | TotalSize = MicrocodeEntryPoint->TotalSize;\r | |
245 | }\r | |
246 | \r | |
31d060d9 JY |
247 | TargetCpuIndex = (UINTN)-1;\r |
248 | Status = VerifyMicrocode(MicrocodeFmpPrivate, MicrocodeEntryPoint, TotalSize, FALSE, &AttemptStatus, NULL, &TargetCpuIndex);\r | |
249 | if (!EFI_ERROR(Status)) {\r | |
250 | IsInUse = TRUE;\r | |
251 | ASSERT (TargetCpuIndex < MicrocodeFmpPrivate->ProcessorCount);\r | |
252 | MicrocodeFmpPrivate->ProcessorInfo[TargetCpuIndex].MicrocodeIndex = Count;\r | |
253 | } else {\r | |
254 | IsInUse = FALSE;\r | |
255 | }\r | |
2ed65824 | 256 | \r |
88266859 JY |
257 | if (ImageDescriptor != NULL && DescriptorCount > Count) {\r |
258 | ImageDescriptor[Count].ImageIndex = (UINT8)(Count + 1);\r | |
259 | CopyGuid (&ImageDescriptor[Count].ImageTypeId, &gMicrocodeFmpImageTypeIdGuid);\r | |
260 | ImageDescriptor[Count].ImageId = LShiftU64(MicrocodeEntryPoint->ProcessorFlags, 32) + MicrocodeEntryPoint->ProcessorSignature.Uint32;\r | |
261 | ImageDescriptor[Count].ImageIdName = NULL;\r | |
262 | ImageDescriptor[Count].Version = MicrocodeEntryPoint->UpdateRevision;\r | |
263 | ImageDescriptor[Count].VersionName = NULL;\r | |
264 | ImageDescriptor[Count].Size = TotalSize;\r | |
265 | ImageAttributes = IMAGE_ATTRIBUTE_IMAGE_UPDATABLE | IMAGE_ATTRIBUTE_RESET_REQUIRED;\r | |
2ed65824 | 266 | if (IsInUse) {\r |
88266859 JY |
267 | ImageAttributes |= IMAGE_ATTRIBUTE_IN_USE;\r |
268 | }\r | |
269 | ImageDescriptor[Count].AttributesSupported = ImageAttributes | IMAGE_ATTRIBUTE_IN_USE;\r | |
270 | ImageDescriptor[Count].AttributesSetting = ImageAttributes;\r | |
271 | ImageDescriptor[Count].Compatibilities = 0;\r | |
272 | ImageDescriptor[Count].LowestSupportedImageVersion = MicrocodeEntryPoint->UpdateRevision; // do not support rollback\r | |
273 | ImageDescriptor[Count].LastAttemptVersion = 0;\r | |
274 | ImageDescriptor[Count].LastAttemptStatus = 0;\r | |
275 | ImageDescriptor[Count].HardwareInstance = 0;\r | |
276 | }\r | |
2ed65824 JY |
277 | if (MicrocodeInfo != NULL && DescriptorCount > Count) {\r |
278 | MicrocodeInfo[Count].MicrocodeEntryPoint = MicrocodeEntryPoint;\r | |
279 | MicrocodeInfo[Count].TotalSize = TotalSize;\r | |
280 | MicrocodeInfo[Count].InUse = IsInUse;\r | |
281 | }\r | |
88266859 JY |
282 | } else {\r |
283 | //\r | |
284 | // It is the padding data between the microcode patches for microcode patches alignment.\r | |
285 | // Because the microcode patch is the multiple of 1-KByte, the padding data should not\r | |
286 | // exist if the microcode patch alignment value is not larger than 1-KByte. So, the microcode\r | |
287 | // alignment value should be larger than 1-KByte. We could skip SIZE_1KB padding data to\r | |
288 | // find the next possible microcode patch header.\r | |
289 | //\r | |
290 | MicrocodeEntryPoint = (CPU_MICROCODE_HEADER *) (((UINTN) MicrocodeEntryPoint) + SIZE_1KB);\r | |
291 | continue;\r | |
292 | }\r | |
293 | \r | |
294 | Count++;\r | |
295 | ASSERT(Count < 0xFF);\r | |
296 | \r | |
297 | //\r | |
298 | // Get the next patch.\r | |
299 | //\r | |
300 | MicrocodeEntryPoint = (CPU_MICROCODE_HEADER *) (((UINTN) MicrocodeEntryPoint) + TotalSize);\r | |
301 | } while (((UINTN) MicrocodeEntryPoint < MicrocodeEnd));\r | |
302 | \r | |
303 | return Count;\r | |
304 | }\r | |
305 | \r | |
31d060d9 JY |
306 | /**\r |
307 | Return matched processor information.\r | |
308 | \r | |
309 | @param[in] MicrocodeFmpPrivate The Microcode driver private data\r | |
310 | @param[in] ProcessorSignature The processor signature to be matched\r | |
311 | @param[in] ProcessorFlags The processor flags to be matched\r | |
312 | @param[in, out] TargetCpuIndex On input, the index of target CPU which tries to match the Microcode. (UINTN)-1 means to try all.\r | |
313 | On output, the index of target CPU which matches the Microcode.\r | |
314 | \r | |
315 | @return matched processor information.\r | |
316 | **/\r | |
317 | PROCESSOR_INFO *\r | |
318 | GetMatchedProcessor (\r | |
319 | IN MICROCODE_FMP_PRIVATE_DATA *MicrocodeFmpPrivate,\r | |
320 | IN UINT32 ProcessorSignature,\r | |
321 | IN UINT32 ProcessorFlags,\r | |
322 | IN OUT UINTN *TargetCpuIndex\r | |
323 | )\r | |
324 | {\r | |
325 | UINTN Index;\r | |
326 | \r | |
327 | if (*TargetCpuIndex != (UINTN)-1) {\r | |
328 | Index = *TargetCpuIndex;\r | |
329 | if ((ProcessorSignature == MicrocodeFmpPrivate->ProcessorInfo[Index].ProcessorSignature) &&\r | |
330 | ((ProcessorFlags & (1 << MicrocodeFmpPrivate->ProcessorInfo[Index].PlatformId)) != 0)) {\r | |
331 | return &MicrocodeFmpPrivate->ProcessorInfo[Index];\r | |
332 | } else {\r | |
333 | return NULL;\r | |
334 | }\r | |
335 | }\r | |
336 | \r | |
337 | for (Index = 0; Index < MicrocodeFmpPrivate->ProcessorCount; Index++) {\r | |
338 | if ((ProcessorSignature == MicrocodeFmpPrivate->ProcessorInfo[Index].ProcessorSignature) &&\r | |
339 | ((ProcessorFlags & (1 << MicrocodeFmpPrivate->ProcessorInfo[Index].PlatformId)) != 0)) {\r | |
340 | *TargetCpuIndex = Index;\r | |
341 | return &MicrocodeFmpPrivate->ProcessorInfo[Index];\r | |
342 | }\r | |
343 | }\r | |
344 | return NULL;\r | |
345 | }\r | |
346 | \r | |
88266859 JY |
347 | /**\r |
348 | Verify Microcode.\r | |
349 | \r | |
350 | Caution: This function may receive untrusted input.\r | |
351 | \r | |
31d060d9 JY |
352 | @param[in] MicrocodeFmpPrivate The Microcode driver private data\r |
353 | @param[in] Image The Microcode image buffer.\r | |
354 | @param[in] ImageSize The size of Microcode image buffer in bytes.\r | |
355 | @param[in] TryLoad Try to load Microcode or not.\r | |
356 | @param[out] LastAttemptStatus The last attempt status, which will be recorded in ESRT and FMP EFI_FIRMWARE_IMAGE_DESCRIPTOR.\r | |
357 | @param[out] AbortReason A pointer to a pointer to a null-terminated string providing more\r | |
358 | details for the aborted operation. The buffer is allocated by this function\r | |
359 | with AllocatePool(), and it is the caller's responsibility to free it with a\r | |
360 | call to FreePool().\r | |
361 | @param[in, out] TargetCpuIndex On input, the index of target CPU which tries to match the Microcode. (UINTN)-1 means to try all.\r | |
362 | On output, the index of target CPU which matches the Microcode.\r | |
88266859 JY |
363 | \r |
364 | @retval EFI_SUCCESS The Microcode image passes verification.\r | |
e9179788 | 365 | @retval EFI_VOLUME_CORRUPTED The Microcode image is corrupted.\r |
88266859 JY |
366 | @retval EFI_INCOMPATIBLE_VERSION The Microcode image version is incorrect.\r |
367 | @retval EFI_UNSUPPORTED The Microcode ProcessorSignature or ProcessorFlags is incorrect.\r | |
368 | @retval EFI_SECURITY_VIOLATION The Microcode image fails to load.\r | |
369 | **/\r | |
370 | EFI_STATUS\r | |
371 | VerifyMicrocode (\r | |
31d060d9 JY |
372 | IN MICROCODE_FMP_PRIVATE_DATA *MicrocodeFmpPrivate,\r |
373 | IN VOID *Image,\r | |
374 | IN UINTN ImageSize,\r | |
375 | IN BOOLEAN TryLoad,\r | |
376 | OUT UINT32 *LastAttemptStatus,\r | |
377 | OUT CHAR16 **AbortReason, OPTIONAL\r | |
378 | IN OUT UINTN *TargetCpuIndex\r | |
88266859 JY |
379 | )\r |
380 | {\r | |
381 | UINTN Index;\r | |
382 | CPU_MICROCODE_HEADER *MicrocodeEntryPoint;\r | |
383 | UINTN TotalSize;\r | |
384 | UINTN DataSize;\r | |
385 | UINT32 CurrentRevision;\r | |
31d060d9 | 386 | PROCESSOR_INFO *ProcessorInfo;\r |
5170327b | 387 | UINT32 InCompleteCheckSum32;\r |
88266859 JY |
388 | UINT32 CheckSum32;\r |
389 | UINTN ExtendedTableLength;\r | |
390 | UINT32 ExtendedTableCount;\r | |
391 | CPU_MICROCODE_EXTENDED_TABLE *ExtendedTable;\r | |
392 | CPU_MICROCODE_EXTENDED_TABLE_HEADER *ExtendedTableHeader;\r | |
393 | BOOLEAN CorrectMicrocode;\r | |
394 | \r | |
395 | //\r | |
396 | // Check HeaderVersion\r | |
397 | //\r | |
398 | MicrocodeEntryPoint = Image;\r | |
399 | if (MicrocodeEntryPoint->HeaderVersion != 0x1) {\r | |
400 | DEBUG((DEBUG_ERROR, "VerifyMicrocode - fail on HeaderVersion\n"));\r | |
401 | *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INVALID_FORMAT;\r | |
402 | if (AbortReason != NULL) {\r | |
403 | *AbortReason = AllocateCopyPool(sizeof(L"InvalidHeaderVersion"), L"InvalidHeaderVersion");\r | |
404 | }\r | |
405 | return EFI_INCOMPATIBLE_VERSION;\r | |
406 | }\r | |
407 | //\r | |
408 | // Check LoaderRevision\r | |
409 | //\r | |
410 | if (MicrocodeEntryPoint->LoaderRevision != 0x1) {\r | |
411 | DEBUG((DEBUG_ERROR, "VerifyMicrocode - fail on LoaderRevision\n"));\r | |
412 | *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INVALID_FORMAT;\r | |
413 | if (AbortReason != NULL) {\r | |
414 | *AbortReason = AllocateCopyPool(sizeof(L"InvalidLoaderVersion"), L"InvalidLoaderVersion");\r | |
415 | }\r | |
416 | return EFI_INCOMPATIBLE_VERSION;\r | |
417 | }\r | |
418 | //\r | |
1db271df | 419 | // Check TotalSize\r |
88266859 JY |
420 | //\r |
421 | if (MicrocodeEntryPoint->DataSize == 0) {\r | |
422 | TotalSize = 2048;\r | |
423 | } else {\r | |
424 | TotalSize = MicrocodeEntryPoint->TotalSize;\r | |
425 | }\r | |
426 | if (TotalSize <= sizeof(CPU_MICROCODE_HEADER)) {\r | |
427 | DEBUG((DEBUG_ERROR, "VerifyMicrocode - TotalSize too small\n"));\r | |
428 | *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INVALID_FORMAT;\r | |
429 | if (AbortReason != NULL) {\r | |
430 | *AbortReason = AllocateCopyPool(sizeof(L"InvalidTotalSize"), L"InvalidTotalSize");\r | |
431 | }\r | |
432 | return EFI_VOLUME_CORRUPTED;\r | |
433 | }\r | |
1db271df SZ |
434 | if ((TotalSize & (SIZE_1KB - 1)) != 0) {\r |
435 | DEBUG((DEBUG_ERROR, "VerifyMicrocode - TotalSize is not multiples of 1024 bytes (1 KBytes)\n"));\r | |
436 | *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INVALID_FORMAT;\r | |
437 | if (AbortReason != NULL) {\r | |
438 | *AbortReason = AllocateCopyPool(sizeof(L"InvalidTotalSize"), L"InvalidTotalSize");\r | |
439 | }\r | |
440 | return EFI_VOLUME_CORRUPTED;\r | |
441 | }\r | |
88266859 | 442 | if (TotalSize != ImageSize) {\r |
2ad34f65 | 443 | DEBUG((DEBUG_ERROR, "VerifyMicrocode - TotalSize not equal to ImageSize\n"));\r |
88266859 JY |
444 | *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INVALID_FORMAT;\r |
445 | if (AbortReason != NULL) {\r | |
446 | *AbortReason = AllocateCopyPool(sizeof(L"InvalidTotalSize"), L"InvalidTotalSize");\r | |
447 | }\r | |
448 | return EFI_VOLUME_CORRUPTED;\r | |
449 | }\r | |
450 | //\r | |
1db271df | 451 | // Check DataSize\r |
88266859 JY |
452 | //\r |
453 | if (MicrocodeEntryPoint->DataSize == 0) {\r | |
454 | DataSize = 2048 - sizeof(CPU_MICROCODE_HEADER);\r | |
455 | } else {\r | |
456 | DataSize = MicrocodeEntryPoint->DataSize;\r | |
457 | }\r | |
458 | if (DataSize > TotalSize - sizeof(CPU_MICROCODE_HEADER)) {\r | |
459 | DEBUG((DEBUG_ERROR, "VerifyMicrocode - DataSize too big\n"));\r | |
460 | *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INVALID_FORMAT;\r | |
461 | if (AbortReason != NULL) {\r | |
462 | *AbortReason = AllocateCopyPool(sizeof(L"InvalidDataSize"), L"InvalidDataSize");\r | |
463 | }\r | |
464 | return EFI_VOLUME_CORRUPTED;\r | |
465 | }\r | |
466 | if ((DataSize & 0x3) != 0) {\r | |
1db271df | 467 | DEBUG((DEBUG_ERROR, "VerifyMicrocode - DataSize is not multiples of DWORDs\n"));\r |
88266859 JY |
468 | *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INVALID_FORMAT;\r |
469 | if (AbortReason != NULL) {\r | |
470 | *AbortReason = AllocateCopyPool(sizeof(L"InvalidDataSize"), L"InvalidDataSize");\r | |
471 | }\r | |
472 | return EFI_VOLUME_CORRUPTED;\r | |
473 | }\r | |
1db271df SZ |
474 | //\r |
475 | // Check CheckSum32\r | |
476 | //\r | |
88266859 JY |
477 | CheckSum32 = CalculateSum32((UINT32 *)MicrocodeEntryPoint, DataSize + sizeof(CPU_MICROCODE_HEADER));\r |
478 | if (CheckSum32 != 0) {\r | |
479 | DEBUG((DEBUG_ERROR, "VerifyMicrocode - fail on CheckSum32\n"));\r | |
480 | *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INVALID_FORMAT;\r | |
481 | if (AbortReason != NULL) {\r | |
482 | *AbortReason = AllocateCopyPool(sizeof(L"InvalidChecksum"), L"InvalidChecksum");\r | |
483 | }\r | |
484 | return EFI_VOLUME_CORRUPTED;\r | |
485 | }\r | |
5170327b CC |
486 | InCompleteCheckSum32 = CheckSum32;\r |
487 | InCompleteCheckSum32 -= MicrocodeEntryPoint->ProcessorSignature.Uint32;\r | |
488 | InCompleteCheckSum32 -= MicrocodeEntryPoint->ProcessorFlags;\r | |
489 | InCompleteCheckSum32 -= MicrocodeEntryPoint->Checksum;\r | |
88266859 JY |
490 | \r |
491 | //\r | |
492 | // Check ProcessorSignature/ProcessorFlags\r | |
493 | //\r | |
31d060d9 JY |
494 | \r |
495 | ProcessorInfo = GetMatchedProcessor (MicrocodeFmpPrivate, MicrocodeEntryPoint->ProcessorSignature.Uint32, MicrocodeEntryPoint->ProcessorFlags, TargetCpuIndex);\r | |
496 | if (ProcessorInfo == NULL) {\r | |
497 | CorrectMicrocode = FALSE;\r | |
88266859 JY |
498 | ExtendedTableLength = TotalSize - (DataSize + sizeof(CPU_MICROCODE_HEADER));\r |
499 | if (ExtendedTableLength != 0) {\r | |
500 | //\r | |
501 | // Extended Table exist, check if the CPU in support list\r | |
502 | //\r | |
503 | ExtendedTableHeader = (CPU_MICROCODE_EXTENDED_TABLE_HEADER *)((UINT8 *)(MicrocodeEntryPoint) + DataSize + sizeof(CPU_MICROCODE_HEADER));\r | |
504 | //\r | |
505 | // Calculate Extended Checksum\r | |
506 | //\r | |
3bd91ae2 | 507 | if ((ExtendedTableLength > sizeof(CPU_MICROCODE_EXTENDED_TABLE_HEADER)) && ((ExtendedTableLength & 0x3) == 0)) {\r |
88266859 | 508 | CheckSum32 = CalculateSum32((UINT32 *)ExtendedTableHeader, ExtendedTableLength);\r |
2ad34f65 HW |
509 | if (CheckSum32 != 0) {\r |
510 | //\r | |
511 | // Checksum incorrect\r | |
512 | //\r | |
513 | DEBUG((DEBUG_ERROR, "VerifyMicrocode - The checksum for extended table is incorrect\n"));\r | |
514 | } else {\r | |
88266859 JY |
515 | //\r |
516 | // Checksum correct\r | |
517 | //\r | |
518 | ExtendedTableCount = ExtendedTableHeader->ExtendedSignatureCount;\r | |
2ad34f65 | 519 | if (ExtendedTableCount > (ExtendedTableLength - sizeof(CPU_MICROCODE_EXTENDED_TABLE_HEADER)) / sizeof(CPU_MICROCODE_EXTENDED_TABLE)) {\r |
f635b138 | 520 | DEBUG((DEBUG_ERROR, "VerifyMicrocode - ExtendedTableCount %d is too big\n", ExtendedTableCount));\r |
2ad34f65 | 521 | } else {\r |
88266859 JY |
522 | ExtendedTable = (CPU_MICROCODE_EXTENDED_TABLE *)(ExtendedTableHeader + 1);\r |
523 | for (Index = 0; Index < ExtendedTableCount; Index++) {\r | |
5170327b CC |
524 | CheckSum32 = InCompleteCheckSum32;\r |
525 | CheckSum32 += ExtendedTable->ProcessorSignature.Uint32;\r | |
526 | CheckSum32 += ExtendedTable->ProcessorFlag;\r | |
527 | CheckSum32 += ExtendedTable->Checksum;\r | |
2ad34f65 HW |
528 | if (CheckSum32 != 0) {\r |
529 | DEBUG((DEBUG_ERROR, "VerifyMicrocode - The checksum for ExtendedTable entry with index 0x%x is incorrect\n", Index));\r | |
530 | } else {\r | |
88266859 JY |
531 | //\r |
532 | // Verify Header\r | |
533 | //\r | |
31d060d9 JY |
534 | ProcessorInfo = GetMatchedProcessor (MicrocodeFmpPrivate, ExtendedTable->ProcessorSignature.Uint32, ExtendedTable->ProcessorFlag, TargetCpuIndex);\r |
535 | if (ProcessorInfo != NULL) {\r | |
88266859 JY |
536 | //\r |
537 | // Find one\r | |
538 | //\r | |
539 | CorrectMicrocode = TRUE;\r | |
540 | break;\r | |
541 | }\r | |
542 | }\r | |
543 | ExtendedTable++;\r | |
544 | }\r | |
545 | }\r | |
546 | }\r | |
547 | }\r | |
548 | }\r | |
549 | if (!CorrectMicrocode) {\r | |
2ed65824 | 550 | if (TryLoad) {\r |
2ad34f65 | 551 | DEBUG((DEBUG_ERROR, "VerifyMicrocode - fail on Current ProcessorSignature/ProcessorFlags\n"));\r |
2ed65824 | 552 | }\r |
88266859 JY |
553 | *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INCORRECT_VERSION;\r |
554 | if (AbortReason != NULL) {\r | |
e9179788 | 555 | *AbortReason = AllocateCopyPool(sizeof(L"UnsupportedProcessorSignature/ProcessorFlags"), L"UnsupportedProcessorSignature/ProcessorFlags");\r |
88266859 JY |
556 | }\r |
557 | return EFI_UNSUPPORTED;\r | |
558 | }\r | |
559 | }\r | |
560 | \r | |
561 | //\r | |
562 | // Check UpdateRevision\r | |
563 | //\r | |
31d060d9 JY |
564 | CurrentRevision = ProcessorInfo->MicrocodeRevision;\r |
565 | if ((MicrocodeEntryPoint->UpdateRevision < CurrentRevision) ||\r | |
566 | (TryLoad && (MicrocodeEntryPoint->UpdateRevision == CurrentRevision))) {\r | |
2ed65824 JY |
567 | if (TryLoad) {\r |
568 | DEBUG((DEBUG_ERROR, "VerifyMicrocode - fail on UpdateRevision\n"));\r | |
569 | }\r | |
88266859 JY |
570 | *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INCORRECT_VERSION;\r |
571 | if (AbortReason != NULL) {\r | |
572 | *AbortReason = AllocateCopyPool(sizeof(L"IncorrectRevision"), L"IncorrectRevision");\r | |
573 | }\r | |
574 | return EFI_INCOMPATIBLE_VERSION;\r | |
575 | }\r | |
576 | \r | |
577 | //\r | |
578 | // try load MCU\r | |
579 | //\r | |
580 | if (TryLoad) {\r | |
31d060d9 | 581 | CurrentRevision = LoadMicrocodeOnThis(MicrocodeFmpPrivate, ProcessorInfo->CpuIndex, (UINTN)MicrocodeEntryPoint + sizeof(CPU_MICROCODE_HEADER));\r |
88266859 JY |
582 | if (MicrocodeEntryPoint->UpdateRevision != CurrentRevision) {\r |
583 | DEBUG((DEBUG_ERROR, "VerifyMicrocode - fail on LoadMicrocode\n"));\r | |
584 | *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_AUTH_ERROR;\r | |
585 | if (AbortReason != NULL) {\r | |
586 | *AbortReason = AllocateCopyPool(sizeof(L"InvalidData"), L"InvalidData");\r | |
587 | }\r | |
588 | return EFI_SECURITY_VIOLATION;\r | |
589 | }\r | |
590 | }\r | |
591 | \r | |
592 | return EFI_SUCCESS;\r | |
593 | }\r | |
594 | \r | |
2ed65824 JY |
595 | /**\r |
596 | Get next Microcode entrypoint.\r | |
88266859 | 597 | \r |
2ed65824 JY |
598 | @param[in] MicrocodeFmpPrivate The Microcode driver private data\r |
599 | @param[in] MicrocodeEntryPoint Current Microcode entrypoint\r | |
600 | \r | |
601 | @return next Microcode entrypoint.\r | |
602 | **/\r | |
603 | CPU_MICROCODE_HEADER *\r | |
604 | GetNextMicrocode (\r | |
605 | IN MICROCODE_FMP_PRIVATE_DATA *MicrocodeFmpPrivate,\r | |
606 | IN CPU_MICROCODE_HEADER *MicrocodeEntryPoint\r | |
607 | )\r | |
608 | {\r | |
609 | UINTN Index;\r | |
610 | \r | |
611 | for (Index = 0; Index < MicrocodeFmpPrivate->DescriptorCount; Index++) {\r | |
612 | if (MicrocodeEntryPoint == MicrocodeFmpPrivate->MicrocodeInfo[Index].MicrocodeEntryPoint) {\r | |
613 | if (Index == (UINTN)MicrocodeFmpPrivate->DescriptorCount - 1) {\r | |
614 | // it is last one\r | |
615 | return NULL;\r | |
88266859 | 616 | } else {\r |
2ed65824 JY |
617 | // return next one\r |
618 | return MicrocodeFmpPrivate->MicrocodeInfo[Index + 1].MicrocodeEntryPoint;\r | |
88266859 | 619 | }\r |
88266859 | 620 | }\r |
2ed65824 | 621 | }\r |
88266859 | 622 | \r |
2ed65824 | 623 | ASSERT(FALSE);\r |
88266859 JY |
624 | return NULL;\r |
625 | }\r | |
626 | \r | |
e9179788 SZ |
627 | /**\r |
628 | Get next FIT Microcode entrypoint.\r | |
629 | \r | |
630 | @param[in] MicrocodeFmpPrivate The Microcode driver private data\r | |
631 | @param[in] MicrocodeEntryPoint Current Microcode entrypoint\r | |
632 | \r | |
633 | @return next FIT Microcode entrypoint.\r | |
634 | **/\r | |
635 | CPU_MICROCODE_HEADER *\r | |
636 | GetNextFitMicrocode (\r | |
637 | IN MICROCODE_FMP_PRIVATE_DATA *MicrocodeFmpPrivate,\r | |
638 | IN CPU_MICROCODE_HEADER *MicrocodeEntryPoint\r | |
639 | )\r | |
640 | {\r | |
641 | UINTN Index;\r | |
642 | \r | |
643 | for (Index = 0; Index < MicrocodeFmpPrivate->FitMicrocodeEntryCount; Index++) {\r | |
644 | if (MicrocodeEntryPoint == MicrocodeFmpPrivate->FitMicrocodeInfo[Index].MicrocodeEntryPoint) {\r | |
645 | if (Index == (UINTN) MicrocodeFmpPrivate->FitMicrocodeEntryCount - 1) {\r | |
646 | // it is last one\r | |
647 | return NULL;\r | |
648 | } else {\r | |
649 | // return next one\r | |
650 | return MicrocodeFmpPrivate->FitMicrocodeInfo[Index + 1].MicrocodeEntryPoint;\r | |
651 | }\r | |
652 | }\r | |
653 | }\r | |
654 | \r | |
655 | ASSERT(FALSE);\r | |
656 | return NULL;\r | |
657 | }\r | |
658 | \r | |
659 | /**\r | |
660 | Find empty FIT Microcode entrypoint.\r | |
661 | \r | |
662 | @param[in] MicrocodeFmpPrivate The Microcode driver private data\r | |
663 | @param[in] ImageSize The size of Microcode image buffer in bytes.\r | |
664 | @param[out] AvailableSize Available size of the empty FIT Microcode entrypoint.\r | |
665 | \r | |
666 | @return Empty FIT Microcode entrypoint.\r | |
667 | **/\r | |
668 | CPU_MICROCODE_HEADER *\r | |
669 | FindEmptyFitMicrocode (\r | |
670 | IN MICROCODE_FMP_PRIVATE_DATA *MicrocodeFmpPrivate,\r | |
671 | IN UINTN ImageSize,\r | |
672 | OUT UINTN *AvailableSize\r | |
673 | )\r | |
674 | {\r | |
675 | UINTN Index;\r | |
676 | CPU_MICROCODE_HEADER *MicrocodeEntryPoint;\r | |
677 | CPU_MICROCODE_HEADER *NextMicrocodeEntryPoint;\r | |
678 | VOID *MicrocodePatchAddress;\r | |
679 | UINTN MicrocodePatchRegionSize;\r | |
680 | \r | |
681 | MicrocodePatchAddress = MicrocodeFmpPrivate->MicrocodePatchAddress;\r | |
682 | MicrocodePatchRegionSize = MicrocodeFmpPrivate->MicrocodePatchRegionSize;\r | |
683 | \r | |
684 | for (Index = 0; Index < MicrocodeFmpPrivate->FitMicrocodeEntryCount; Index++) {\r | |
685 | if (MicrocodeFmpPrivate->FitMicrocodeInfo[Index].Empty) {\r | |
686 | MicrocodeEntryPoint = MicrocodeFmpPrivate->FitMicrocodeInfo[Index].MicrocodeEntryPoint;\r | |
687 | NextMicrocodeEntryPoint = GetNextFitMicrocode (MicrocodeFmpPrivate, MicrocodeEntryPoint);\r | |
688 | if (NextMicrocodeEntryPoint != NULL) {\r | |
689 | *AvailableSize = (UINTN) NextMicrocodeEntryPoint - (UINTN) MicrocodeEntryPoint;\r | |
690 | } else {\r | |
691 | *AvailableSize = (UINTN) MicrocodePatchAddress + MicrocodePatchRegionSize - (UINTN) MicrocodeEntryPoint;\r | |
692 | }\r | |
693 | if (*AvailableSize >= ImageSize) {\r | |
694 | return MicrocodeEntryPoint;\r | |
695 | }\r | |
696 | }\r | |
697 | }\r | |
698 | \r | |
699 | return NULL;\r | |
700 | }\r | |
701 | \r | |
702 | /**\r | |
703 | Find unused FIT Microcode entrypoint.\r | |
704 | \r | |
705 | @param[in] MicrocodeFmpPrivate The Microcode driver private data\r | |
706 | @param[in] ImageSize The size of Microcode image buffer in bytes.\r | |
707 | @param[out] AvailableSize Available size of the unused FIT Microcode entrypoint.\r | |
708 | \r | |
709 | @return Unused FIT Microcode entrypoint.\r | |
710 | **/\r | |
711 | CPU_MICROCODE_HEADER *\r | |
712 | FindUnusedFitMicrocode (\r | |
713 | IN MICROCODE_FMP_PRIVATE_DATA *MicrocodeFmpPrivate,\r | |
714 | IN UINTN ImageSize,\r | |
715 | OUT UINTN *AvailableSize\r | |
716 | )\r | |
717 | {\r | |
718 | UINTN Index;\r | |
719 | CPU_MICROCODE_HEADER *MicrocodeEntryPoint;\r | |
720 | CPU_MICROCODE_HEADER *NextMicrocodeEntryPoint;\r | |
721 | VOID *MicrocodePatchAddress;\r | |
722 | UINTN MicrocodePatchRegionSize;\r | |
723 | \r | |
724 | MicrocodePatchAddress = MicrocodeFmpPrivate->MicrocodePatchAddress;\r | |
725 | MicrocodePatchRegionSize = MicrocodeFmpPrivate->MicrocodePatchRegionSize;\r | |
726 | \r | |
727 | for (Index = 0; Index < MicrocodeFmpPrivate->FitMicrocodeEntryCount; Index++) {\r | |
728 | if (!MicrocodeFmpPrivate->FitMicrocodeInfo[Index].InUse) {\r | |
729 | MicrocodeEntryPoint = MicrocodeFmpPrivate->FitMicrocodeInfo[Index].MicrocodeEntryPoint;\r | |
730 | NextMicrocodeEntryPoint = GetNextFitMicrocode (MicrocodeFmpPrivate, MicrocodeEntryPoint);\r | |
731 | if (NextMicrocodeEntryPoint != NULL) {\r | |
732 | *AvailableSize = (UINTN) NextMicrocodeEntryPoint - (UINTN) MicrocodeEntryPoint;\r | |
733 | } else {\r | |
734 | *AvailableSize = (UINTN) MicrocodePatchAddress + MicrocodePatchRegionSize - (UINTN) MicrocodeEntryPoint;\r | |
735 | }\r | |
736 | if (*AvailableSize >= ImageSize) {\r | |
737 | return MicrocodeEntryPoint;\r | |
738 | }\r | |
739 | }\r | |
740 | }\r | |
741 | \r | |
742 | return NULL;\r | |
743 | }\r | |
744 | \r | |
88266859 JY |
745 | /**\r |
746 | Get current Microcode used region size.\r | |
747 | \r | |
2ed65824 JY |
748 | @param[in] MicrocodeFmpPrivate The Microcode driver private data\r |
749 | \r | |
88266859 JY |
750 | @return current Microcode used region size.\r |
751 | **/\r | |
752 | UINTN\r | |
753 | GetCurrentMicrocodeUsedRegionSize (\r | |
2ed65824 | 754 | IN MICROCODE_FMP_PRIVATE_DATA *MicrocodeFmpPrivate\r |
88266859 JY |
755 | )\r |
756 | {\r | |
2ed65824 | 757 | if (MicrocodeFmpPrivate->DescriptorCount == 0) {\r |
88266859 JY |
758 | return 0;\r |
759 | }\r | |
88266859 | 760 | \r |
2ed65824 JY |
761 | return (UINTN)MicrocodeFmpPrivate->MicrocodeInfo[MicrocodeFmpPrivate->DescriptorCount - 1].MicrocodeEntryPoint\r |
762 | + (UINTN)MicrocodeFmpPrivate->MicrocodeInfo[MicrocodeFmpPrivate->DescriptorCount - 1].TotalSize\r | |
763 | - (UINTN)MicrocodeFmpPrivate->MicrocodePatchAddress;\r | |
88266859 JY |
764 | }\r |
765 | \r | |
766 | /**\r | |
767 | Update Microcode.\r | |
768 | \r | |
769 | @param[in] Address The flash address of Microcode.\r | |
770 | @param[in] Image The Microcode image buffer.\r | |
771 | @param[in] ImageSize The size of Microcode image buffer in bytes.\r | |
772 | @param[out] LastAttemptStatus The last attempt status, which will be recorded in ESRT and FMP EFI_FIRMWARE_IMAGE_DESCRIPTOR.\r | |
773 | \r | |
774 | @retval EFI_SUCCESS The Microcode image is updated.\r | |
775 | @retval EFI_WRITE_PROTECTED The flash device is read only.\r | |
776 | **/\r | |
777 | EFI_STATUS\r | |
778 | UpdateMicrocode (\r | |
779 | IN UINT64 Address,\r | |
780 | IN VOID *Image,\r | |
781 | IN UINTN ImageSize,\r | |
782 | OUT UINT32 *LastAttemptStatus\r | |
783 | )\r | |
784 | {\r | |
785 | EFI_STATUS Status;\r | |
786 | \r | |
787 | DEBUG((DEBUG_INFO, "PlatformUpdate:"));\r | |
788 | DEBUG((DEBUG_INFO, " Address - 0x%lx,", Address));\r | |
e9179788 | 789 | DEBUG((DEBUG_INFO, " Length - 0x%x\n", ImageSize));\r |
88266859 JY |
790 | \r |
791 | Status = MicrocodeFlashWrite (\r | |
792 | Address,\r | |
793 | Image,\r | |
794 | ImageSize\r | |
795 | );\r | |
796 | if (!EFI_ERROR(Status)) {\r | |
797 | *LastAttemptStatus = LAST_ATTEMPT_STATUS_SUCCESS;\r | |
798 | } else {\r | |
799 | *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_UNSUCCESSFUL;\r | |
800 | }\r | |
801 | return Status;\r | |
802 | }\r | |
803 | \r | |
e9179788 SZ |
804 | /**\r |
805 | Update Microcode flash region with FIT.\r | |
806 | \r | |
807 | @param[in] MicrocodeFmpPrivate The Microcode driver private data\r | |
808 | @param[in] TargetMicrocodeEntryPoint Target Microcode entrypoint to be updated\r | |
809 | @param[in] Image The Microcode image buffer.\r | |
810 | @param[in] ImageSize The size of Microcode image buffer in bytes.\r | |
811 | @param[out] LastAttemptStatus The last attempt status, which will be recorded in ESRT and FMP EFI_FIRMWARE_IMAGE_DESCRIPTOR.\r | |
812 | \r | |
813 | @retval EFI_SUCCESS The Microcode image is written.\r | |
814 | @retval EFI_WRITE_PROTECTED The flash device is read only.\r | |
815 | **/\r | |
816 | EFI_STATUS\r | |
817 | UpdateMicrocodeFlashRegionWithFit (\r | |
818 | IN MICROCODE_FMP_PRIVATE_DATA *MicrocodeFmpPrivate,\r | |
819 | IN CPU_MICROCODE_HEADER *TargetMicrocodeEntryPoint,\r | |
820 | IN VOID *Image,\r | |
821 | IN UINTN ImageSize,\r | |
822 | OUT UINT32 *LastAttemptStatus\r | |
823 | )\r | |
824 | {\r | |
825 | VOID *MicrocodePatchAddress;\r | |
826 | UINTN MicrocodePatchRegionSize;\r | |
827 | UINTN TargetTotalSize;\r | |
828 | EFI_STATUS Status;\r | |
829 | VOID *MicrocodePatchScratchBuffer;\r | |
830 | UINT8 *ScratchBufferPtr;\r | |
831 | UINTN ScratchBufferSize;\r | |
832 | UINTN RestSize;\r | |
833 | UINTN AvailableSize;\r | |
834 | VOID *NextMicrocodeEntryPoint;\r | |
835 | VOID *EmptyFitMicrocodeEntry;\r | |
836 | VOID *UnusedFitMicrocodeEntry;\r | |
837 | \r | |
838 | DEBUG((DEBUG_INFO, "UpdateMicrocodeFlashRegionWithFit: Image - 0x%x, size - 0x%x\n", Image, ImageSize));\r | |
839 | \r | |
840 | MicrocodePatchAddress = MicrocodeFmpPrivate->MicrocodePatchAddress;\r | |
841 | MicrocodePatchRegionSize = MicrocodeFmpPrivate->MicrocodePatchRegionSize;\r | |
842 | \r | |
843 | MicrocodePatchScratchBuffer = AllocateZeroPool (MicrocodePatchRegionSize);\r | |
844 | if (MicrocodePatchScratchBuffer == NULL) {\r | |
845 | DEBUG((DEBUG_ERROR, "Fail to allocate Microcode Scratch buffer\n"));\r | |
846 | *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INSUFFICIENT_RESOURCES;\r | |
847 | return EFI_OUT_OF_RESOURCES;\r | |
848 | }\r | |
849 | ScratchBufferPtr = MicrocodePatchScratchBuffer;\r | |
850 | ScratchBufferSize = 0;\r | |
851 | \r | |
852 | //\r | |
853 | // Target data collection\r | |
854 | //\r | |
855 | TargetTotalSize = 0;\r | |
856 | AvailableSize = 0;\r | |
857 | if (TargetMicrocodeEntryPoint != NULL) {\r | |
858 | if (TargetMicrocodeEntryPoint->DataSize == 0) {\r | |
859 | TargetTotalSize = 2048;\r | |
860 | } else {\r | |
861 | TargetTotalSize = TargetMicrocodeEntryPoint->TotalSize;\r | |
862 | }\r | |
863 | DEBUG((DEBUG_INFO, " TargetTotalSize - 0x%x\n", TargetTotalSize));\r | |
864 | NextMicrocodeEntryPoint = GetNextFitMicrocode (MicrocodeFmpPrivate, TargetMicrocodeEntryPoint);\r | |
865 | DEBUG((DEBUG_INFO, " NextMicrocodeEntryPoint - 0x%x\n", NextMicrocodeEntryPoint));\r | |
866 | if (NextMicrocodeEntryPoint != NULL) {\r | |
867 | ASSERT ((UINTN) NextMicrocodeEntryPoint >= ((UINTN) TargetMicrocodeEntryPoint + TargetTotalSize));\r | |
868 | AvailableSize = (UINTN) NextMicrocodeEntryPoint - (UINTN) TargetMicrocodeEntryPoint;\r | |
869 | } else {\r | |
870 | AvailableSize = (UINTN) MicrocodePatchAddress + MicrocodePatchRegionSize - (UINTN) TargetMicrocodeEntryPoint;\r | |
871 | }\r | |
872 | DEBUG((DEBUG_INFO, " AvailableSize - 0x%x\n", AvailableSize));\r | |
873 | ASSERT (AvailableSize >= TargetTotalSize);\r | |
874 | }\r | |
875 | //\r | |
876 | // Total Size means the Microcode size.\r | |
877 | // Available Size means the Microcode size plus the pad till (1) next Microcode or (2) the end.\r | |
878 | //\r | |
879 | // (1)\r | |
880 | // +------+-----------+-----+------+===================+\r | |
881 | // | MCU1 | Microcode | PAD | MCU2 | Empty |\r | |
882 | // +------+-----------+-----+------+===================+\r | |
883 | // | TotalSize |\r | |
884 | // |<-AvailableSize->|\r | |
885 | //\r | |
886 | // (2)\r | |
887 | // +------+-----------+===================+\r | |
888 | // | MCU | Microcode | Empty |\r | |
889 | // +------+-----------+===================+\r | |
890 | // | TotalSize |\r | |
891 | // |<- AvailableSize ->|\r | |
892 | //\r | |
893 | \r | |
894 | //\r | |
895 | // Update based on policy\r | |
896 | //\r | |
897 | \r | |
898 | //\r | |
899 | // 1. If there is enough space to update old one in situ, replace old microcode in situ.\r | |
900 | //\r | |
901 | if (AvailableSize >= ImageSize) {\r | |
902 | DEBUG((DEBUG_INFO, "Replace old microcode in situ\n"));\r | |
903 | //\r | |
904 | // +------+------------+------+===================+\r | |
905 | // |Other | Old Image | ... | Empty |\r | |
906 | // +------+------------+------+===================+\r | |
907 | //\r | |
908 | // +------+---------+--+------+===================+\r | |
909 | // |Other |New Image|FF| ... | Empty |\r | |
910 | // +------+---------+--+------+===================+\r | |
911 | //\r | |
912 | // 1.1. Copy new image\r | |
913 | CopyMem (ScratchBufferPtr, Image, ImageSize);\r | |
914 | ScratchBufferSize += ImageSize;\r | |
915 | ScratchBufferPtr = (UINT8 *)MicrocodePatchScratchBuffer + ScratchBufferSize;\r | |
916 | // 1.2. Pad 0xFF\r | |
917 | RestSize = AvailableSize - ImageSize;\r | |
918 | if (RestSize > 0) {\r | |
919 | SetMem (ScratchBufferPtr, RestSize, 0xFF);\r | |
920 | ScratchBufferSize += RestSize;\r | |
921 | ScratchBufferPtr = (UINT8 *)MicrocodePatchScratchBuffer + ScratchBufferSize;\r | |
922 | }\r | |
923 | Status = UpdateMicrocode((UINTN)TargetMicrocodeEntryPoint, MicrocodePatchScratchBuffer, ScratchBufferSize, LastAttemptStatus);\r | |
924 | return Status;\r | |
925 | }\r | |
926 | \r | |
927 | //\r | |
928 | // 2. If there is empty FIT microcode entry with enough space, use it.\r | |
929 | //\r | |
930 | EmptyFitMicrocodeEntry = FindEmptyFitMicrocode (MicrocodeFmpPrivate, ImageSize, &AvailableSize);\r | |
931 | if (EmptyFitMicrocodeEntry != NULL) {\r | |
932 | DEBUG((DEBUG_INFO, "Use empty FIT microcode entry\n"));\r | |
933 | // 2.1. Copy new image\r | |
934 | CopyMem (ScratchBufferPtr, Image, ImageSize);\r | |
935 | ScratchBufferSize += ImageSize;\r | |
936 | ScratchBufferPtr = (UINT8 *)MicrocodePatchScratchBuffer + ScratchBufferSize;\r | |
937 | // 2.2. Pad 0xFF\r | |
938 | RestSize = AvailableSize - ImageSize;\r | |
939 | if (RestSize > 0) {\r | |
940 | SetMem (ScratchBufferPtr, RestSize, 0xFF);\r | |
941 | ScratchBufferSize += RestSize;\r | |
942 | ScratchBufferPtr = (UINT8 *)MicrocodePatchScratchBuffer + ScratchBufferSize;\r | |
943 | }\r | |
944 | Status = UpdateMicrocode ((UINTN) EmptyFitMicrocodeEntry, MicrocodePatchScratchBuffer, ScratchBufferSize, LastAttemptStatus);\r | |
945 | if (!EFI_ERROR (Status) && (TargetMicrocodeEntryPoint != NULL)) {\r | |
946 | //\r | |
947 | // Empty old microcode.\r | |
948 | //\r | |
949 | ScratchBufferPtr = MicrocodePatchScratchBuffer;\r | |
950 | SetMem (ScratchBufferPtr, TargetTotalSize, 0xFF);\r | |
951 | ScratchBufferSize = TargetTotalSize;\r | |
952 | ScratchBufferPtr = (UINT8 *) MicrocodePatchScratchBuffer + ScratchBufferSize;\r | |
953 | UpdateMicrocode ((UINTN) TargetMicrocodeEntryPoint, MicrocodePatchScratchBuffer, ScratchBufferSize, LastAttemptStatus);\r | |
954 | }\r | |
955 | return Status;\r | |
956 | }\r | |
957 | \r | |
958 | //\r | |
959 | // 3. If there is unused microcode entry with enough space, use it.\r | |
960 | //\r | |
961 | UnusedFitMicrocodeEntry = FindUnusedFitMicrocode (MicrocodeFmpPrivate, ImageSize, &AvailableSize);\r | |
962 | if (UnusedFitMicrocodeEntry != NULL) {\r | |
963 | DEBUG((DEBUG_INFO, "Use unused FIT microcode entry\n"));\r | |
964 | // 3.1. Copy new image\r | |
965 | CopyMem (ScratchBufferPtr, Image, ImageSize);\r | |
966 | ScratchBufferSize += ImageSize;\r | |
967 | ScratchBufferPtr = (UINT8 *)MicrocodePatchScratchBuffer + ScratchBufferSize;\r | |
968 | // 3.2. Pad 0xFF\r | |
969 | RestSize = AvailableSize - ImageSize;\r | |
970 | if (RestSize > 0) {\r | |
971 | SetMem (ScratchBufferPtr, RestSize, 0xFF);\r | |
972 | ScratchBufferSize += RestSize;\r | |
973 | ScratchBufferPtr = (UINT8 *)MicrocodePatchScratchBuffer + ScratchBufferSize;\r | |
974 | }\r | |
975 | Status = UpdateMicrocode ((UINTN) UnusedFitMicrocodeEntry, MicrocodePatchScratchBuffer, ScratchBufferSize, LastAttemptStatus);\r | |
976 | if (!EFI_ERROR (Status) && (TargetMicrocodeEntryPoint != NULL)) {\r | |
977 | //\r | |
978 | // Empty old microcode.\r | |
979 | //\r | |
980 | ScratchBufferPtr = MicrocodePatchScratchBuffer;\r | |
981 | SetMem (ScratchBufferPtr, TargetTotalSize, 0xFF);\r | |
982 | ScratchBufferSize = TargetTotalSize;\r | |
983 | ScratchBufferPtr = (UINT8 *) MicrocodePatchScratchBuffer + ScratchBufferSize;\r | |
984 | UpdateMicrocode ((UINTN) TargetMicrocodeEntryPoint, MicrocodePatchScratchBuffer, ScratchBufferSize, LastAttemptStatus);\r | |
985 | }\r | |
986 | return Status;\r | |
987 | }\r | |
988 | \r | |
989 | //\r | |
990 | // 4. No usable FIT microcode entry.\r | |
991 | //\r | |
992 | DEBUG((DEBUG_ERROR, "No usable FIT microcode entry\n"));\r | |
993 | *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INSUFFICIENT_RESOURCES;\r | |
994 | Status = EFI_OUT_OF_RESOURCES;\r | |
995 | \r | |
996 | return Status;\r | |
997 | }\r | |
998 | \r | |
88266859 | 999 | /**\r |
2ed65824 | 1000 | Update Microcode flash region.\r |
88266859 | 1001 | \r |
2ed65824 | 1002 | @param[in] MicrocodeFmpPrivate The Microcode driver private data\r |
31d060d9 | 1003 | @param[in] TargetMicrocodeEntryPoint Target Microcode entrypoint to be updated\r |
2ed65824 JY |
1004 | @param[in] Image The Microcode image buffer.\r |
1005 | @param[in] ImageSize The size of Microcode image buffer in bytes.\r | |
1006 | @param[out] LastAttemptStatus The last attempt status, which will be recorded in ESRT and FMP EFI_FIRMWARE_IMAGE_DESCRIPTOR.\r | |
88266859 | 1007 | \r |
2ed65824 JY |
1008 | @retval EFI_SUCCESS The Microcode image is written.\r |
1009 | @retval EFI_WRITE_PROTECTED The flash device is read only.\r | |
88266859 JY |
1010 | **/\r |
1011 | EFI_STATUS\r | |
2ed65824 JY |
1012 | UpdateMicrocodeFlashRegion (\r |
1013 | IN MICROCODE_FMP_PRIVATE_DATA *MicrocodeFmpPrivate,\r | |
31d060d9 | 1014 | IN CPU_MICROCODE_HEADER *TargetMicrocodeEntryPoint,\r |
2ed65824 JY |
1015 | IN VOID *Image,\r |
1016 | IN UINTN ImageSize,\r | |
1017 | OUT UINT32 *LastAttemptStatus\r | |
88266859 JY |
1018 | )\r |
1019 | {\r | |
2ed65824 JY |
1020 | VOID *MicrocodePatchAddress;\r |
1021 | UINTN MicrocodePatchRegionSize;\r | |
31d060d9 | 1022 | UINTN TargetTotalSize;\r |
88266859 | 1023 | UINTN UsedRegionSize;\r |
2ed65824 JY |
1024 | EFI_STATUS Status;\r |
1025 | VOID *MicrocodePatchScratchBuffer;\r | |
1026 | UINT8 *ScratchBufferPtr;\r | |
1027 | UINTN ScratchBufferSize;\r | |
1028 | UINTN RestSize;\r | |
1029 | UINTN AvailableSize;\r | |
1030 | VOID *NextMicrocodeEntryPoint;\r | |
1031 | MICROCODE_INFO *MicrocodeInfo;\r | |
1032 | UINTN MicrocodeCount;\r | |
1033 | UINTN Index;\r | |
1034 | \r | |
1035 | DEBUG((DEBUG_INFO, "UpdateMicrocodeFlashRegion: Image - 0x%x, size - 0x%x\n", Image, ImageSize));\r | |
88266859 | 1036 | \r |
2ed65824 JY |
1037 | MicrocodePatchAddress = MicrocodeFmpPrivate->MicrocodePatchAddress;\r |
1038 | MicrocodePatchRegionSize = MicrocodeFmpPrivate->MicrocodePatchRegionSize;\r | |
1039 | \r | |
1040 | MicrocodePatchScratchBuffer = AllocateZeroPool (MicrocodePatchRegionSize);\r | |
1041 | if (MicrocodePatchScratchBuffer == NULL) {\r | |
1042 | DEBUG((DEBUG_ERROR, "Fail to allocate Microcode Scratch buffer\n"));\r | |
1043 | *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INSUFFICIENT_RESOURCES;\r | |
1044 | return EFI_OUT_OF_RESOURCES;\r | |
88266859 | 1045 | }\r |
2ed65824 JY |
1046 | ScratchBufferPtr = MicrocodePatchScratchBuffer;\r |
1047 | ScratchBufferSize = 0;\r | |
88266859 | 1048 | \r |
2ed65824 | 1049 | //\r |
31d060d9 | 1050 | // Target data collection\r |
2ed65824 | 1051 | //\r |
31d060d9 | 1052 | TargetTotalSize = 0;\r |
2ed65824 JY |
1053 | AvailableSize = 0;\r |
1054 | NextMicrocodeEntryPoint = NULL;\r | |
31d060d9 JY |
1055 | if (TargetMicrocodeEntryPoint != NULL) {\r |
1056 | if (TargetMicrocodeEntryPoint->DataSize == 0) {\r | |
1057 | TargetTotalSize = 2048;\r | |
88266859 | 1058 | } else {\r |
31d060d9 | 1059 | TargetTotalSize = TargetMicrocodeEntryPoint->TotalSize;\r |
88266859 | 1060 | }\r |
31d060d9 JY |
1061 | DEBUG((DEBUG_INFO, " TargetTotalSize - 0x%x\n", TargetTotalSize));\r |
1062 | NextMicrocodeEntryPoint = GetNextMicrocode(MicrocodeFmpPrivate, TargetMicrocodeEntryPoint);\r | |
2ed65824 JY |
1063 | DEBUG((DEBUG_INFO, " NextMicrocodeEntryPoint - 0x%x\n", NextMicrocodeEntryPoint));\r |
1064 | if (NextMicrocodeEntryPoint != NULL) {\r | |
31d060d9 JY |
1065 | ASSERT ((UINTN)NextMicrocodeEntryPoint >= ((UINTN)TargetMicrocodeEntryPoint + TargetTotalSize));\r |
1066 | AvailableSize = (UINTN)NextMicrocodeEntryPoint - (UINTN)TargetMicrocodeEntryPoint;\r | |
2ed65824 | 1067 | } else {\r |
31d060d9 | 1068 | AvailableSize = (UINTN)MicrocodePatchAddress + MicrocodePatchRegionSize - (UINTN)TargetMicrocodeEntryPoint;\r |
2ed65824 JY |
1069 | }\r |
1070 | DEBUG((DEBUG_INFO, " AvailableSize - 0x%x\n", AvailableSize));\r | |
e9179788 | 1071 | ASSERT (AvailableSize >= TargetTotalSize);\r |
2ed65824 | 1072 | }\r |
2ed65824 JY |
1073 | UsedRegionSize = GetCurrentMicrocodeUsedRegionSize(MicrocodeFmpPrivate);\r |
1074 | DEBUG((DEBUG_INFO, " UsedRegionSize - 0x%x\n", UsedRegionSize));\r | |
31d060d9 JY |
1075 | ASSERT (UsedRegionSize >= TargetTotalSize);\r |
1076 | if (TargetMicrocodeEntryPoint != NULL) {\r | |
1077 | ASSERT ((UINTN)MicrocodePatchAddress + UsedRegionSize >= ((UINTN)TargetMicrocodeEntryPoint + TargetTotalSize));\r | |
2ed65824 JY |
1078 | }\r |
1079 | //\r | |
e9179788 SZ |
1080 | // Total Size means the Microcode size.\r |
1081 | // Available Size means the Microcode size plus the pad till (1) next Microcode or (2) the end.\r | |
2ed65824 JY |
1082 | //\r |
1083 | // (1)\r | |
1084 | // +------+-----------+-----+------+===================+\r | |
1085 | // | MCU1 | Microcode | PAD | MCU2 | Empty |\r | |
1086 | // +------+-----------+-----+------+===================+\r | |
1087 | // | TotalSize |\r | |
1088 | // |<-AvailableSize->|\r | |
1089 | // |<- UsedRegionSize ->|\r | |
1090 | //\r | |
1091 | // (2)\r | |
1092 | // +------+-----------+===================+\r | |
1093 | // | MCU | Microcode | Empty |\r | |
1094 | // +------+-----------+===================+\r | |
1095 | // | TotalSize |\r | |
1096 | // |<- AvailableSize ->|\r | |
1097 | // |<-UsedRegionSize->|\r | |
1098 | //\r | |
1099 | \r | |
1100 | //\r | |
1101 | // Update based on policy\r | |
1102 | //\r | |
1103 | \r | |
1104 | //\r | |
1105 | // 1. If there is enough space to update old one in situ, replace old microcode in situ.\r | |
1106 | //\r | |
1107 | if (AvailableSize >= ImageSize) {\r | |
1108 | DEBUG((DEBUG_INFO, "Replace old microcode in situ\n"));\r | |
1109 | //\r | |
1110 | // +------+------------+------+===================+\r | |
e9179788 | 1111 | // |Other | Old Image | ... | Empty |\r |
2ed65824 JY |
1112 | // +------+------------+------+===================+\r |
1113 | //\r | |
1114 | // +------+---------+--+------+===================+\r | |
e9179788 | 1115 | // |Other |New Image|FF| ... | Empty |\r |
2ed65824 JY |
1116 | // +------+---------+--+------+===================+\r |
1117 | //\r | |
1118 | // 1.1. Copy new image\r | |
1119 | CopyMem (ScratchBufferPtr, Image, ImageSize);\r | |
1120 | ScratchBufferSize += ImageSize;\r | |
31d060d9 | 1121 | ScratchBufferPtr = (UINT8 *)MicrocodePatchScratchBuffer + ScratchBufferSize;\r |
2ed65824 JY |
1122 | // 1.2. Pad 0xFF\r |
1123 | RestSize = AvailableSize - ImageSize;\r | |
1124 | if (RestSize > 0) {\r | |
1125 | SetMem (ScratchBufferPtr, RestSize, 0xFF);\r | |
1126 | ScratchBufferSize += RestSize;\r | |
31d060d9 | 1127 | ScratchBufferPtr = (UINT8 *)MicrocodePatchScratchBuffer + ScratchBufferSize;\r |
2ed65824 | 1128 | }\r |
31d060d9 | 1129 | Status = UpdateMicrocode((UINTN)TargetMicrocodeEntryPoint, MicrocodePatchScratchBuffer, ScratchBufferSize, LastAttemptStatus);\r |
2ed65824 | 1130 | return Status;\r |
88266859 JY |
1131 | }\r |
1132 | \r | |
2ed65824 JY |
1133 | //\r |
1134 | // 2. If there is enough space to remove old one and add new one, reorg and replace old microcode.\r | |
1135 | //\r | |
31d060d9 JY |
1136 | if (MicrocodePatchRegionSize - (UsedRegionSize - TargetTotalSize) >= ImageSize) {\r |
1137 | if (TargetMicrocodeEntryPoint == NULL) {\r | |
2ed65824 JY |
1138 | DEBUG((DEBUG_INFO, "Append new microcode\n"));\r |
1139 | //\r | |
1140 | // +------+------------+------+===================+\r | |
1141 | // |Other1| Other |Other2| Empty |\r | |
1142 | // +------+------------+------+===================+\r | |
1143 | //\r | |
1144 | // +------+------------+------+-----------+=======+\r | |
1145 | // |Other1| Other |Other2| New Image | Empty |\r | |
1146 | // +------+------------+------+-----------+=======+\r | |
1147 | //\r | |
1148 | Status = UpdateMicrocode((UINTN)MicrocodePatchAddress + UsedRegionSize, Image, ImageSize, LastAttemptStatus);\r | |
1149 | } else {\r | |
1150 | DEBUG((DEBUG_INFO, "Reorg and replace old microcode\n"));\r | |
1151 | //\r | |
1152 | // +------+------------+------+===================+\r | |
e9179788 | 1153 | // |Other | Old Image | ... | Empty |\r |
2ed65824 JY |
1154 | // +------+------------+------+===================+\r |
1155 | //\r | |
1156 | // +------+---------------+------+================+\r | |
e9179788 | 1157 | // |Other | New Image | ... | Empty |\r |
2ed65824 JY |
1158 | // +------+---------------+------+================+\r |
1159 | //\r | |
1160 | // 2.1. Copy new image\r | |
31d060d9 | 1161 | CopyMem (ScratchBufferPtr, Image, ImageSize);\r |
2ed65824 | 1162 | ScratchBufferSize += ImageSize;\r |
31d060d9 | 1163 | ScratchBufferPtr = (UINT8 *)MicrocodePatchScratchBuffer + ScratchBufferSize;\r |
2ed65824 JY |
1164 | // 2.2. Copy rest images after the old image.\r |
1165 | if (NextMicrocodeEntryPoint != 0) {\r | |
1166 | RestSize = (UINTN)MicrocodePatchAddress + UsedRegionSize - ((UINTN)NextMicrocodeEntryPoint);\r | |
e9179788 | 1167 | CopyMem (ScratchBufferPtr, NextMicrocodeEntryPoint, RestSize);\r |
2ed65824 | 1168 | ScratchBufferSize += RestSize;\r |
31d060d9 | 1169 | ScratchBufferPtr = (UINT8 *)MicrocodePatchScratchBuffer + ScratchBufferSize;\r |
2ed65824 | 1170 | }\r |
31d060d9 | 1171 | Status = UpdateMicrocode((UINTN)TargetMicrocodeEntryPoint, MicrocodePatchScratchBuffer, ScratchBufferSize, LastAttemptStatus);\r |
2ed65824 JY |
1172 | }\r |
1173 | return Status;\r | |
1174 | }\r | |
1175 | \r | |
1176 | //\r | |
1177 | // 3. The new image can be put in MCU region, but not all others can be put.\r | |
1178 | // So all the unused MCU is removed.\r | |
1179 | //\r | |
1180 | if (MicrocodePatchRegionSize >= ImageSize) {\r | |
1181 | //\r | |
1182 | // +------+------------+------+===================+\r | |
1183 | // |Other1| Old Image |Other2| Empty |\r | |
1184 | // +------+------------+------+===================+\r | |
1185 | //\r | |
1186 | // +-------------------------------------+--------+\r | |
1187 | // | New Image | Other |\r | |
1188 | // +-------------------------------------+--------+\r | |
1189 | //\r | |
1190 | DEBUG((DEBUG_INFO, "Add new microcode from beginning\n"));\r | |
1191 | \r | |
1192 | MicrocodeCount = MicrocodeFmpPrivate->DescriptorCount;\r | |
1193 | MicrocodeInfo = MicrocodeFmpPrivate->MicrocodeInfo;\r | |
1194 | \r | |
1195 | // 3.1. Copy new image\r | |
31d060d9 | 1196 | CopyMem (ScratchBufferPtr, Image, ImageSize);\r |
2ed65824 | 1197 | ScratchBufferSize += ImageSize;\r |
31d060d9 | 1198 | ScratchBufferPtr = (UINT8 *)MicrocodePatchScratchBuffer + ScratchBufferSize;\r |
2ed65824 JY |
1199 | // 3.2. Copy some others to rest buffer\r |
1200 | for (Index = 0; Index < MicrocodeCount; Index++) {\r | |
1201 | if (!MicrocodeInfo[Index].InUse) {\r | |
1202 | continue;\r | |
1203 | }\r | |
31d060d9 | 1204 | if (MicrocodeInfo[Index].MicrocodeEntryPoint == TargetMicrocodeEntryPoint) {\r |
2ed65824 JY |
1205 | continue;\r |
1206 | }\r | |
1207 | if (MicrocodeInfo[Index].TotalSize <= MicrocodePatchRegionSize - ScratchBufferSize) {\r | |
1208 | CopyMem (ScratchBufferPtr, MicrocodeInfo[Index].MicrocodeEntryPoint, MicrocodeInfo[Index].TotalSize);\r | |
1209 | ScratchBufferSize += MicrocodeInfo[Index].TotalSize;\r | |
31d060d9 | 1210 | ScratchBufferPtr = (UINT8 *)MicrocodePatchScratchBuffer + ScratchBufferSize;\r |
2ed65824 JY |
1211 | }\r |
1212 | }\r | |
1213 | // 3.3. Pad 0xFF\r | |
1214 | RestSize = MicrocodePatchRegionSize - ScratchBufferSize;\r | |
1215 | if (RestSize > 0) {\r | |
1216 | SetMem (ScratchBufferPtr, RestSize, 0xFF);\r | |
1217 | ScratchBufferSize += RestSize;\r | |
31d060d9 | 1218 | ScratchBufferPtr = (UINT8 *)MicrocodePatchScratchBuffer + ScratchBufferSize;\r |
2ed65824 JY |
1219 | }\r |
1220 | Status = UpdateMicrocode((UINTN)MicrocodePatchAddress, MicrocodePatchScratchBuffer, ScratchBufferSize, LastAttemptStatus);\r | |
1221 | return Status;\r | |
1222 | }\r | |
1223 | \r | |
1224 | //\r | |
1225 | // 4. The new image size is bigger than the whole MCU region.\r | |
1226 | //\r | |
1227 | DEBUG((DEBUG_ERROR, "Microcode too big\n"));\r | |
1228 | *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INSUFFICIENT_RESOURCES;\r | |
1229 | Status = EFI_OUT_OF_RESOURCES;\r | |
1230 | \r | |
1231 | return Status;\r | |
1232 | }\r | |
1233 | \r | |
1234 | /**\r | |
1235 | Write Microcode.\r | |
1236 | \r | |
1237 | Caution: This function may receive untrusted input.\r | |
1238 | \r | |
1239 | @param[in] MicrocodeFmpPrivate The Microcode driver private data\r | |
1240 | @param[in] Image The Microcode image buffer.\r | |
1241 | @param[in] ImageSize The size of Microcode image buffer in bytes.\r | |
1242 | @param[out] LastAttemptVersion The last attempt version, which will be recorded in ESRT and FMP EFI_FIRMWARE_IMAGE_DESCRIPTOR.\r | |
1243 | @param[out] LastAttemptStatus The last attempt status, which will be recorded in ESRT and FMP EFI_FIRMWARE_IMAGE_DESCRIPTOR.\r | |
1244 | @param[out] AbortReason A pointer to a pointer to a null-terminated string providing more\r | |
1245 | details for the aborted operation. The buffer is allocated by this function\r | |
1246 | with AllocatePool(), and it is the caller's responsibility to free it with a\r | |
1247 | call to FreePool().\r | |
1248 | \r | |
1249 | @retval EFI_SUCCESS The Microcode image is written.\r | |
e9179788 | 1250 | @retval EFI_VOLUME_CORRUPTED The Microcode image is corrupted.\r |
2ed65824 JY |
1251 | @retval EFI_INCOMPATIBLE_VERSION The Microcode image version is incorrect.\r |
1252 | @retval EFI_SECURITY_VIOLATION The Microcode image fails to load.\r | |
1253 | @retval EFI_WRITE_PROTECTED The flash device is read only.\r | |
1254 | **/\r | |
1255 | EFI_STATUS\r | |
1256 | MicrocodeWrite (\r | |
1257 | IN MICROCODE_FMP_PRIVATE_DATA *MicrocodeFmpPrivate,\r | |
1258 | IN VOID *Image,\r | |
1259 | IN UINTN ImageSize,\r | |
1260 | OUT UINT32 *LastAttemptVersion,\r | |
1261 | OUT UINT32 *LastAttemptStatus,\r | |
1262 | OUT CHAR16 **AbortReason\r | |
1263 | )\r | |
1264 | {\r | |
1265 | EFI_STATUS Status;\r | |
1266 | VOID *AlignedImage;\r | |
31d060d9 JY |
1267 | CPU_MICROCODE_HEADER *TargetMicrocodeEntryPoint;\r |
1268 | UINTN TargetCpuIndex;\r | |
1269 | UINTN TargetMicrcodeIndex;\r | |
2ed65824 | 1270 | \r |
88266859 JY |
1271 | //\r |
1272 | // MCU must be 16 bytes aligned\r | |
1273 | //\r | |
1274 | AlignedImage = AllocateCopyPool(ImageSize, Image);\r | |
1275 | if (AlignedImage == NULL) {\r | |
1276 | DEBUG((DEBUG_ERROR, "Fail to allocate aligned image\n"));\r | |
1277 | *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INSUFFICIENT_RESOURCES;\r | |
1278 | return EFI_OUT_OF_RESOURCES;\r | |
1279 | }\r | |
1280 | \r | |
31d060d9 JY |
1281 | TargetCpuIndex = (UINTN)-1;\r |
1282 | Status = VerifyMicrocode(MicrocodeFmpPrivate, AlignedImage, ImageSize, TRUE, LastAttemptStatus, AbortReason, &TargetCpuIndex);\r | |
88266859 JY |
1283 | if (EFI_ERROR(Status)) {\r |
1284 | DEBUG((DEBUG_ERROR, "Fail to verify Microcode Region\n"));\r | |
1285 | FreePool(AlignedImage);\r | |
1286 | return Status;\r | |
1287 | }\r | |
1288 | DEBUG((DEBUG_INFO, "Pass VerifyMicrocode\n"));\r | |
e9179788 | 1289 | *LastAttemptVersion = ((CPU_MICROCODE_HEADER *)Image)->UpdateRevision;\r |
88266859 | 1290 | \r |
31d060d9 JY |
1291 | DEBUG((DEBUG_INFO, " TargetCpuIndex - 0x%x\n", TargetCpuIndex));\r |
1292 | ASSERT (TargetCpuIndex < MicrocodeFmpPrivate->ProcessorCount);\r | |
1293 | TargetMicrcodeIndex = MicrocodeFmpPrivate->ProcessorInfo[TargetCpuIndex].MicrocodeIndex;\r | |
1294 | DEBUG((DEBUG_INFO, " TargetMicrcodeIndex - 0x%x\n", TargetMicrcodeIndex));\r | |
1295 | if (TargetMicrcodeIndex != (UINTN)-1) {\r | |
1296 | ASSERT (TargetMicrcodeIndex < MicrocodeFmpPrivate->DescriptorCount);\r | |
1297 | TargetMicrocodeEntryPoint = MicrocodeFmpPrivate->MicrocodeInfo[TargetMicrcodeIndex].MicrocodeEntryPoint;\r | |
1298 | } else {\r | |
1299 | TargetMicrocodeEntryPoint = NULL;\r | |
1300 | }\r | |
1301 | DEBUG((DEBUG_INFO, " TargetMicrocodeEntryPoint - 0x%x\n", TargetMicrocodeEntryPoint));\r | |
1302 | \r | |
e9179788 SZ |
1303 | if (MicrocodeFmpPrivate->FitMicrocodeInfo != NULL) {\r |
1304 | Status = UpdateMicrocodeFlashRegionWithFit (\r | |
1305 | MicrocodeFmpPrivate,\r | |
1306 | TargetMicrocodeEntryPoint,\r | |
1307 | AlignedImage,\r | |
1308 | ImageSize,\r | |
1309 | LastAttemptStatus\r | |
1310 | );\r | |
1311 | } else {\r | |
1312 | Status = UpdateMicrocodeFlashRegion (\r | |
1313 | MicrocodeFmpPrivate,\r | |
1314 | TargetMicrocodeEntryPoint,\r | |
1315 | AlignedImage,\r | |
1316 | ImageSize,\r | |
1317 | LastAttemptStatus\r | |
1318 | );\r | |
1319 | }\r | |
88266859 JY |
1320 | \r |
1321 | FreePool(AlignedImage);\r | |
1322 | \r | |
1323 | return Status;\r | |
1324 | }\r | |
1325 | \r | |
1326 | \r |