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Commit | Line | Data |
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cf1d4549 JY |
1 | /** @file\r |
2 | \r | |
35897da2 | 3 | Copyright (c) 2014 - 2019, Intel Corporation. All rights reserved.<BR>\r |
9672cd30 | 4 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
cf1d4549 JY |
5 | \r |
6 | **/\r | |
7 | \r | |
8 | #include <PiPei.h>\r | |
9 | #include <Library/BaseLib.h>\r | |
10 | #include <Library/DebugLib.h>\r | |
11 | #include <Library/PcdLib.h>\r | |
12 | #include <FspGlobalData.h>\r | |
13 | #include <FspEas.h>\r | |
6b5677e1 | 14 | #include <Library/FspSwitchStackLib.h>\r |
cf1d4549 JY |
15 | \r |
16 | #pragma pack(1)\r | |
17 | \r | |
18 | //\r | |
19 | // API Parameter +0x34\r | |
20 | // API return address +0x30\r | |
21 | //\r | |
22 | // push FspInfoHeader +0x2C\r | |
23 | // pushfd +0x28\r | |
24 | // cli\r | |
25 | // pushad +0x24\r | |
26 | // sub esp, 8 +0x00\r | |
27 | // sidt fword ptr [esp]\r | |
28 | //\r | |
29 | typedef struct {\r | |
30 | UINT16 IdtrLimit;\r | |
31 | UINT32 IdtrBase;\r | |
32 | UINT16 Reserved;\r | |
ec0b5484 | 33 | UINT32 Registers[8]; // General Purpose Registers: Edi, Esi, Ebp, Esp, Ebx, Edx, Ecx and Eax\r |
cf1d4549 JY |
34 | UINT16 Flags[2];\r |
35 | UINT32 FspInfoHeader;\r | |
36 | UINT32 ApiRet;\r | |
37 | UINT32 ApiParam[2];\r | |
38 | } CONTEXT_STACK;\r | |
39 | \r | |
ec0b5484 KT |
40 | //\r |
41 | // API return address +0xB0\r | |
42 | // push API Parameter2 +0xA8\r | |
43 | // push API Parameter1 +0xA0\r | |
44 | // push FspInfoHeader +0x98\r | |
45 | // pushfq +0x90\r | |
46 | // cli\r | |
47 | // PUSHA_64 +0x10\r | |
48 | // sub rsp, 16 +0x00\r | |
49 | // sidt [rsp]\r | |
50 | //\r | |
51 | typedef struct {\r | |
52 | UINT64 Idtr[2]; // IDTR Limit - bit0:bi15, IDTR Base - bit16:bit79\r | |
53 | UINT64 Registers[16]; // General Purpose Registers: RDI, RSI, RBP, RSP, RBX, RDX, RCX, RAX, and R15 to R8\r | |
54 | UINT32 Flags[2];\r | |
55 | UINT64 FspInfoHeader;\r | |
56 | UINT64 ApiParam[2];\r | |
57 | UINT64 ApiRet; // 64bit stack format is different from the 32bit one due to x64 calling convention\r | |
58 | } CONTEXT_STACK_64;\r | |
59 | \r | |
60 | #define CONTEXT_STACK_OFFSET(x) (sizeof(UINTN) == sizeof (UINT32) ? (UINTN)&((CONTEXT_STACK *)(UINTN)0)->x : (UINTN)&((CONTEXT_STACK_64 *)(UINTN)0)->x)\r | |
cf1d4549 JY |
61 | \r |
62 | #pragma pack()\r | |
63 | \r | |
64 | /**\r | |
65 | This function sets the FSP global data pointer.\r | |
66 | \r | |
86079a4d | 67 | @param[in] FspData FSP global data pointer.\r |
cf1d4549 JY |
68 | \r |
69 | **/\r | |
70 | VOID\r | |
71 | EFIAPI\r | |
72 | SetFspGlobalDataPointer (\r | |
111f2228 | 73 | IN FSP_GLOBAL_DATA *FspData\r |
cf1d4549 JY |
74 | )\r |
75 | {\r | |
76 | ASSERT (FspData != NULL);\r | |
111f2228 | 77 | *((volatile UINT32 *)(UINTN)PcdGet32 (PcdGlobalDataPointerAddress)) = (UINT32)(UINTN)FspData;\r |
cf1d4549 JY |
78 | }\r |
79 | \r | |
80 | /**\r | |
81 | This function gets the FSP global data pointer.\r | |
82 | \r | |
83 | **/\r | |
84 | FSP_GLOBAL_DATA *\r | |
85 | EFIAPI\r | |
86 | GetFspGlobalDataPointer (\r | |
87 | VOID\r | |
88 | )\r | |
89 | {\r | |
111f2228 | 90 | FSP_GLOBAL_DATA *FspData;\r |
cf1d4549 | 91 | \r |
111f2228 | 92 | FspData = *(FSP_GLOBAL_DATA **)(UINTN)PcdGet32 (PcdGlobalDataPointerAddress);\r |
cf1d4549 JY |
93 | return FspData;\r |
94 | }\r | |
95 | \r | |
96 | /**\r | |
35897da2 | 97 | This function gets back the FSP API first parameter passed by the bootloader.\r |
cf1d4549 | 98 | \r |
35897da2 | 99 | @retval ApiParameter FSP API first parameter passed by the bootloader.\r |
cf1d4549 | 100 | **/\r |
ec0b5484 | 101 | UINTN\r |
cf1d4549 JY |
102 | EFIAPI\r |
103 | GetFspApiParameter (\r | |
104 | VOID\r | |
105 | )\r | |
106 | {\r | |
107 | FSP_GLOBAL_DATA *FspData;\r | |
108 | \r | |
111f2228 | 109 | FspData = GetFspGlobalDataPointer ();\r |
ec0b5484 | 110 | return *(UINTN *)(FspData->CoreStack + CONTEXT_STACK_OFFSET (ApiParam[0]));\r |
cf1d4549 JY |
111 | }\r |
112 | \r | |
113 | /**\r | |
35897da2 | 114 | This function returns the FSP entry stack pointer from address of the first API parameter.\r |
cf1d4549 | 115 | \r |
35897da2 CC |
116 | @retval FSP entry stack pointer.\r |
117 | **/\r | |
111f2228 | 118 | VOID *\r |
35897da2 CC |
119 | EFIAPI\r |
120 | GetFspEntryStack (\r | |
121 | VOID\r | |
122 | )\r | |
123 | {\r | |
124 | FSP_GLOBAL_DATA *FspData;\r | |
125 | \r | |
111f2228 MK |
126 | FspData = GetFspGlobalDataPointer ();\r |
127 | return (VOID *)(FspData->CoreStack + CONTEXT_STACK_OFFSET (ApiParam[0]));\r | |
35897da2 CC |
128 | }\r |
129 | \r | |
130 | /**\r | |
131 | This function gets back the FSP API second parameter passed by the bootloader.\r | |
132 | \r | |
133 | @retval ApiParameter FSP API second parameter passed by the bootloader.\r | |
cf1d4549 | 134 | **/\r |
ec0b5484 | 135 | UINTN\r |
cf1d4549 JY |
136 | EFIAPI\r |
137 | GetFspApiParameter2 (\r | |
138 | VOID\r | |
139 | )\r | |
140 | {\r | |
141 | FSP_GLOBAL_DATA *FspData;\r | |
142 | \r | |
111f2228 | 143 | FspData = GetFspGlobalDataPointer ();\r |
ec0b5484 | 144 | return *(UINTN *)(FspData->CoreStack + CONTEXT_STACK_OFFSET (ApiParam[1]));\r |
cf1d4549 JY |
145 | }\r |
146 | \r | |
147 | /**\r | |
148 | This function sets the FSP API parameter in the stack.\r | |
149 | \r | |
150 | @param[in] Value New parameter value.\r | |
151 | \r | |
152 | **/\r | |
153 | VOID\r | |
154 | EFIAPI\r | |
155 | SetFspApiParameter (\r | |
111f2228 | 156 | IN UINT32 Value\r |
cf1d4549 JY |
157 | )\r |
158 | {\r | |
159 | FSP_GLOBAL_DATA *FspData;\r | |
160 | \r | |
ec0b5484 KT |
161 | FspData = GetFspGlobalDataPointer ();\r |
162 | *(UINTN *)(FspData->CoreStack + CONTEXT_STACK_OFFSET (ApiParam)) = Value;\r | |
cf1d4549 JY |
163 | }\r |
164 | \r | |
165 | /**\r | |
166 | This function set the API status code returned to the BootLoader.\r | |
167 | \r | |
168 | @param[in] ReturnStatus Status code to return.\r | |
169 | \r | |
170 | **/\r | |
171 | VOID\r | |
172 | EFIAPI\r | |
173 | SetFspApiReturnStatus (\r | |
ec0b5484 | 174 | IN UINTN ReturnStatus\r |
cf1d4549 JY |
175 | )\r |
176 | {\r | |
177 | FSP_GLOBAL_DATA *FspData;\r | |
178 | \r | |
ec0b5484 KT |
179 | FspData = GetFspGlobalDataPointer ();\r |
180 | *(UINTN *)(FspData->CoreStack + CONTEXT_STACK_OFFSET (Registers[7])) = ReturnStatus;\r | |
cf1d4549 JY |
181 | }\r |
182 | \r | |
183 | /**\r | |
184 | This function sets the context switching stack to a new stack frame.\r | |
185 | \r | |
186 | @param[in] NewStackTop New core stack to be set.\r | |
187 | \r | |
188 | **/\r | |
189 | VOID\r | |
190 | EFIAPI\r | |
191 | SetFspCoreStackPointer (\r | |
111f2228 | 192 | IN VOID *NewStackTop\r |
cf1d4549 JY |
193 | )\r |
194 | {\r | |
195 | FSP_GLOBAL_DATA *FspData;\r | |
ec0b5484 KT |
196 | UINTN *OldStack;\r |
197 | UINTN *NewStack;\r | |
cf1d4549 JY |
198 | UINT32 StackContextLen;\r |
199 | \r | |
111f2228 | 200 | FspData = GetFspGlobalDataPointer ();\r |
ec0b5484 | 201 | StackContextLen = sizeof(CONTEXT_STACK) / sizeof(UINTN);\r |
cf1d4549 JY |
202 | \r |
203 | //\r | |
204 | // Reserve space for the ContinuationFunc two parameters\r | |
205 | //\r | |
ec0b5484 KT |
206 | OldStack = (UINTN *)FspData->CoreStack;\r |
207 | NewStack = (UINTN *)NewStackTop - StackContextLen - 2;\r | |
208 | FspData->CoreStack = (UINTN)NewStack;\r | |
cf1d4549 JY |
209 | while (StackContextLen-- != 0) {\r |
210 | *NewStack++ = *OldStack++;\r | |
211 | }\r | |
212 | }\r | |
213 | \r | |
214 | /**\r | |
215 | This function sets the platform specific data pointer.\r | |
216 | \r | |
86079a4d | 217 | @param[in] PlatformData FSP platform specific data pointer.\r |
cf1d4549 JY |
218 | \r |
219 | **/\r | |
220 | VOID\r | |
221 | EFIAPI\r | |
222 | SetFspPlatformDataPointer (\r | |
111f2228 | 223 | IN VOID *PlatformData\r |
cf1d4549 JY |
224 | )\r |
225 | {\r | |
226 | FSP_GLOBAL_DATA *FspData;\r | |
227 | \r | |
111f2228 | 228 | FspData = GetFspGlobalDataPointer ();\r |
cf1d4549 JY |
229 | FspData->PlatformData.DataPtr = PlatformData;\r |
230 | }\r | |
231 | \r | |
cf1d4549 JY |
232 | /**\r |
233 | This function gets the platform specific data pointer.\r | |
234 | \r | |
86079a4d | 235 | @param[in] PlatformData FSP platform specific data pointer.\r |
cf1d4549 JY |
236 | \r |
237 | **/\r | |
238 | VOID *\r | |
239 | EFIAPI\r | |
240 | GetFspPlatformDataPointer (\r | |
241 | VOID\r | |
242 | )\r | |
243 | {\r | |
244 | FSP_GLOBAL_DATA *FspData;\r | |
245 | \r | |
111f2228 | 246 | FspData = GetFspGlobalDataPointer ();\r |
cf1d4549 JY |
247 | return FspData->PlatformData.DataPtr;\r |
248 | }\r | |
249 | \r | |
cf1d4549 JY |
250 | /**\r |
251 | This function sets the UPD data pointer.\r | |
252 | \r | |
253 | @param[in] UpdDataPtr UPD data pointer.\r | |
254 | **/\r | |
255 | VOID\r | |
256 | EFIAPI\r | |
257 | SetFspUpdDataPointer (\r | |
111f2228 | 258 | IN VOID *UpdDataPtr\r |
cf1d4549 JY |
259 | )\r |
260 | {\r | |
261 | FSP_GLOBAL_DATA *FspData;\r | |
262 | \r | |
263 | //\r | |
86079a4d | 264 | // Get the FSP Global Data Pointer\r |
cf1d4549 | 265 | //\r |
111f2228 | 266 | FspData = GetFspGlobalDataPointer ();\r |
cf1d4549 JY |
267 | \r |
268 | //\r | |
269 | // Set the UPD pointer.\r | |
270 | //\r | |
271 | FspData->UpdDataPtr = UpdDataPtr;\r | |
272 | }\r | |
273 | \r | |
274 | /**\r | |
275 | This function gets the UPD data pointer.\r | |
276 | \r | |
277 | @return UpdDataPtr UPD data pointer.\r | |
278 | **/\r | |
279 | VOID *\r | |
280 | EFIAPI\r | |
281 | GetFspUpdDataPointer (\r | |
282 | VOID\r | |
283 | )\r | |
284 | {\r | |
285 | FSP_GLOBAL_DATA *FspData;\r | |
286 | \r | |
111f2228 | 287 | FspData = GetFspGlobalDataPointer ();\r |
cf1d4549 JY |
288 | return FspData->UpdDataPtr;\r |
289 | }\r | |
290 | \r | |
cf1d4549 | 291 | /**\r |
86079a4d | 292 | This function sets the FspMemoryInit UPD data pointer.\r |
cf1d4549 | 293 | \r |
86079a4d | 294 | @param[in] MemoryInitUpdPtr FspMemoryInit UPD data pointer.\r |
cf1d4549 JY |
295 | **/\r |
296 | VOID\r | |
297 | EFIAPI\r | |
298 | SetFspMemoryInitUpdDataPointer (\r | |
111f2228 | 299 | IN VOID *MemoryInitUpdPtr\r |
cf1d4549 JY |
300 | )\r |
301 | {\r | |
302 | FSP_GLOBAL_DATA *FspData;\r | |
303 | \r | |
304 | //\r | |
86079a4d | 305 | // Get the FSP Global Data Pointer\r |
cf1d4549 | 306 | //\r |
111f2228 | 307 | FspData = GetFspGlobalDataPointer ();\r |
cf1d4549 JY |
308 | \r |
309 | //\r | |
86079a4d | 310 | // Set the FspMemoryInit UPD pointer.\r |
cf1d4549 JY |
311 | //\r |
312 | FspData->MemoryInitUpdPtr = MemoryInitUpdPtr;\r | |
313 | }\r | |
314 | \r | |
315 | /**\r | |
86079a4d | 316 | This function gets the FspMemoryInit UPD data pointer.\r |
cf1d4549 | 317 | \r |
86079a4d | 318 | @return FspMemoryInit UPD data pointer.\r |
cf1d4549 JY |
319 | **/\r |
320 | VOID *\r | |
321 | EFIAPI\r | |
322 | GetFspMemoryInitUpdDataPointer (\r | |
323 | VOID\r | |
324 | )\r | |
325 | {\r | |
326 | FSP_GLOBAL_DATA *FspData;\r | |
327 | \r | |
111f2228 | 328 | FspData = GetFspGlobalDataPointer ();\r |
cf1d4549 JY |
329 | return FspData->MemoryInitUpdPtr;\r |
330 | }\r | |
331 | \r | |
cf1d4549 | 332 | /**\r |
86079a4d | 333 | This function sets the FspSiliconInit UPD data pointer.\r |
cf1d4549 | 334 | \r |
86079a4d | 335 | @param[in] SiliconInitUpdPtr FspSiliconInit UPD data pointer.\r |
cf1d4549 JY |
336 | **/\r |
337 | VOID\r | |
338 | EFIAPI\r | |
339 | SetFspSiliconInitUpdDataPointer (\r | |
111f2228 | 340 | IN VOID *SiliconInitUpdPtr\r |
cf1d4549 JY |
341 | )\r |
342 | {\r | |
343 | FSP_GLOBAL_DATA *FspData;\r | |
344 | \r | |
345 | //\r | |
86079a4d | 346 | // Get the FSP Global Data Pointer\r |
cf1d4549 | 347 | //\r |
111f2228 | 348 | FspData = GetFspGlobalDataPointer ();\r |
cf1d4549 JY |
349 | \r |
350 | //\r | |
86079a4d | 351 | // Set the FspSiliconInit UPD data pointer.\r |
cf1d4549 JY |
352 | //\r |
353 | FspData->SiliconInitUpdPtr = SiliconInitUpdPtr;\r | |
354 | }\r | |
355 | \r | |
356 | /**\r | |
86079a4d | 357 | This function gets the FspSiliconInit UPD data pointer.\r |
cf1d4549 | 358 | \r |
86079a4d | 359 | @return FspSiliconInit UPD data pointer.\r |
cf1d4549 JY |
360 | **/\r |
361 | VOID *\r | |
362 | EFIAPI\r | |
363 | GetFspSiliconInitUpdDataPointer (\r | |
364 | VOID\r | |
365 | )\r | |
366 | {\r | |
367 | FSP_GLOBAL_DATA *FspData;\r | |
368 | \r | |
111f2228 | 369 | FspData = GetFspGlobalDataPointer ();\r |
cf1d4549 JY |
370 | return FspData->SiliconInitUpdPtr;\r |
371 | }\r | |
372 | \r | |
cf1d4549 JY |
373 | /**\r |
374 | Set FSP measurement point timestamp.\r | |
375 | \r | |
376 | @param[in] Id Measurement point ID.\r | |
377 | \r | |
378 | @return performance timestamp.\r | |
379 | **/\r | |
380 | UINT64\r | |
381 | EFIAPI\r | |
382 | SetFspMeasurePoint (\r | |
383 | IN UINT8 Id\r | |
384 | )\r | |
385 | {\r | |
386 | FSP_GLOBAL_DATA *FspData;\r | |
387 | \r | |
388 | //\r | |
389 | // Bit [55: 0] will be the timestamp\r | |
390 | // Bit [63:56] will be the ID\r | |
391 | //\r | |
111f2228 MK |
392 | FspData = GetFspGlobalDataPointer ();\r |
393 | if (FspData->PerfIdx < sizeof (FspData->PerfData) / sizeof (FspData->PerfData[0])) {\r | |
394 | FspData->PerfData[FspData->PerfIdx] = AsmReadTsc ();\r | |
cf1d4549 JY |
395 | ((UINT8 *)(&FspData->PerfData[FspData->PerfIdx]))[7] = Id;\r |
396 | }\r | |
397 | \r | |
398 | return FspData->PerfData[(FspData->PerfIdx)++];\r | |
399 | }\r | |
400 | \r | |
401 | /**\r | |
402 | This function gets the FSP info header pointer.\r | |
403 | \r | |
404 | @retval FspInfoHeader FSP info header pointer\r | |
405 | **/\r | |
406 | FSP_INFO_HEADER *\r | |
407 | EFIAPI\r | |
408 | GetFspInfoHeader (\r | |
409 | VOID\r | |
410 | )\r | |
411 | {\r | |
111f2228 | 412 | return GetFspGlobalDataPointer ()->FspInfoHeader;\r |
cf1d4549 JY |
413 | }\r |
414 | \r | |
415 | /**\r | |
416 | This function sets the FSP info header pointer.\r | |
417 | \r | |
418 | @param[in] FspInfoHeader FSP info header pointer\r | |
419 | **/\r | |
420 | VOID\r | |
421 | EFIAPI\r | |
422 | SetFspInfoHeader (\r | |
111f2228 | 423 | FSP_INFO_HEADER *FspInfoHeader\r |
cf1d4549 JY |
424 | )\r |
425 | {\r | |
111f2228 | 426 | GetFspGlobalDataPointer ()->FspInfoHeader = FspInfoHeader;\r |
cf1d4549 JY |
427 | }\r |
428 | \r | |
429 | /**\r | |
430 | This function gets the FSP info header pointer using the API stack context.\r | |
431 | \r | |
432 | @retval FspInfoHeader FSP info header pointer using the API stack context\r | |
433 | **/\r | |
434 | FSP_INFO_HEADER *\r | |
435 | EFIAPI\r | |
436 | GetFspInfoHeaderFromApiContext (\r | |
437 | VOID\r | |
438 | )\r | |
439 | {\r | |
440 | FSP_GLOBAL_DATA *FspData;\r | |
441 | \r | |
111f2228 | 442 | FspData = GetFspGlobalDataPointer ();\r |
ec0b5484 | 443 | return (FSP_INFO_HEADER *)(*(UINTN *)(FspData->CoreStack + CONTEXT_STACK_OFFSET (FspInfoHeader)));\r |
cf1d4549 JY |
444 | }\r |
445 | \r | |
446 | /**\r | |
cc0b456a | 447 | This function gets the CfgRegion data pointer.\r |
cf1d4549 | 448 | \r |
cc0b456a | 449 | @return CfgRegion data pointer.\r |
cf1d4549 JY |
450 | **/\r |
451 | VOID *\r | |
452 | EFIAPI\r | |
cc0b456a | 453 | GetFspCfgRegionDataPointer (\r |
cf1d4549 JY |
454 | VOID\r |
455 | )\r | |
456 | {\r | |
111f2228 | 457 | FSP_INFO_HEADER *FspInfoHeader;\r |
cf1d4549 JY |
458 | \r |
459 | FspInfoHeader = GetFspInfoHeader ();\r | |
ec0b5484 | 460 | return (VOID *)(UINTN)(FspInfoHeader->ImageBase + FspInfoHeader->CfgRegionOffset);\r |
cf1d4549 JY |
461 | }\r |
462 | \r | |
463 | /**\r | |
464 | This function gets FSP API calling index.\r | |
465 | \r | |
466 | @retval API calling index\r | |
467 | **/\r | |
468 | UINT8\r | |
469 | EFIAPI\r | |
470 | GetFspApiCallingIndex (\r | |
471 | VOID\r | |
472 | )\r | |
473 | {\r | |
111f2228 | 474 | return GetFspGlobalDataPointer ()->ApiIdx;\r |
cf1d4549 JY |
475 | }\r |
476 | \r | |
477 | /**\r | |
478 | This function sets FSP API calling mode.\r | |
479 | \r | |
480 | @param[in] Index API calling index\r | |
481 | **/\r | |
482 | VOID\r | |
483 | EFIAPI\r | |
484 | SetFspApiCallingIndex (\r | |
485 | UINT8 Index\r | |
486 | )\r | |
487 | {\r | |
488 | FSP_GLOBAL_DATA *FspData;\r | |
489 | \r | |
111f2228 | 490 | FspData = GetFspGlobalDataPointer ();\r |
cf1d4549 JY |
491 | FspData->ApiIdx = Index;\r |
492 | }\r | |
493 | \r | |
494 | /**\r | |
495 | This function gets FSP Phase StatusCode.\r | |
496 | \r | |
497 | @retval StatusCode\r | |
498 | **/\r | |
499 | UINT32\r | |
500 | EFIAPI\r | |
501 | GetPhaseStatusCode (\r | |
502 | VOID\r | |
503 | )\r | |
504 | {\r | |
111f2228 | 505 | return GetFspGlobalDataPointer ()->StatusCode;\r |
cf1d4549 JY |
506 | }\r |
507 | \r | |
508 | /**\r | |
509 | This function sets FSP Phase StatusCode.\r | |
510 | \r | |
511 | @param[in] Mode Phase StatusCode\r | |
512 | **/\r | |
513 | VOID\r | |
514 | EFIAPI\r | |
515 | SetPhaseStatusCode (\r | |
516 | UINT32 StatusCode\r | |
517 | )\r | |
518 | {\r | |
519 | FSP_GLOBAL_DATA *FspData;\r | |
520 | \r | |
111f2228 | 521 | FspData = GetFspGlobalDataPointer ();\r |
cf1d4549 JY |
522 | FspData->StatusCode = StatusCode;\r |
523 | }\r | |
524 | \r | |
6b5677e1 YS |
525 | /**\r |
526 | This function updates the return status of the FSP API with requested reset type and returns to Boot Loader.\r | |
527 | \r | |
528 | @param[in] FspResetType Reset type that needs to returned as API return status\r | |
529 | \r | |
530 | **/\r | |
531 | VOID\r | |
532 | EFIAPI\r | |
533 | FspApiReturnStatusReset (\r | |
111f2228 | 534 | IN UINT32 FspResetType\r |
6b5677e1 YS |
535 | )\r |
536 | {\r | |
537 | volatile BOOLEAN LoopUntilReset;\r | |
e37bb20c | 538 | \r |
6b5677e1 | 539 | LoopUntilReset = TRUE;\r |
111f2228 | 540 | DEBUG ((DEBUG_INFO, "FSP returning control to Bootloader with reset required return status %x\n", FspResetType));\r |
a2e61f34 CC |
541 | if (GetFspGlobalDataPointer ()->FspMode == FSP_IN_API_MODE) {\r |
542 | ///\r | |
543 | /// Below code is not an infinite loop.The control will go back to API calling function in BootLoader each time BootLoader\r | |
544 | /// calls the FSP API without honoring the reset request by FSP\r | |
545 | ///\r | |
546 | do {\r | |
547 | SetFspApiReturnStatus ((EFI_STATUS)FspResetType);\r | |
548 | Pei2LoaderSwitchStack ();\r | |
549 | DEBUG ((DEBUG_ERROR, "!!!ERROR: FSP has requested BootLoader for reset. But BootLoader has not honored the reset\n"));\r | |
550 | DEBUG ((DEBUG_ERROR, "!!!ERROR: Please add support in BootLoader to honor the reset request from FSP\n"));\r | |
551 | } while (LoopUntilReset);\r | |
552 | }\r | |
6b5677e1 | 553 | }\r |