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1 | /** @file\r |
2 | This is the implementation to save ACPI S3 Context.\r | |
3 | \r | |
16f69227 | 4 | Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>\r |
bd890a73 SZ |
5 | \r |
6 | This program and the accompanying materials\r | |
7 | are licensed and made available under the terms and conditions\r | |
8 | of the BSD License which accompanies this distribution. The\r | |
9 | full text of the license may be found at\r | |
10 | http://opensource.org/licenses/bsd-license.php\r | |
11 | \r | |
12 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
13 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
14 | \r | |
15 | **/\r | |
16 | \r | |
17 | #include <PiDxe.h>\r | |
18 | #include <Library/BaseLib.h>\r | |
19 | #include <Library/BaseMemoryLib.h>\r | |
20 | #include <Library/UefiBootServicesTableLib.h>\r | |
21 | #include <Library/HobLib.h>\r | |
22 | #include <Library/LockBoxLib.h>\r | |
23 | #include <Library/PcdLib.h>\r | |
24 | #include <Library/DebugLib.h>\r | |
25 | #include <Guid/AcpiS3Context.h>\r | |
26 | #include <Guid/Acpi.h>\r | |
27 | #include <IndustryStandard/Acpi.h>\r | |
28 | #include <Protocol/LockBox.h>\r | |
29 | \r | |
30 | //\r | |
31 | // 8 extra pages for PF handler.\r | |
32 | //\r | |
33 | #define EXTRA_PAGE_TABLE_PAGES 8\r | |
34 | \r | |
35 | EFI_GUID mAcpiS3IdtrProfileGuid = {\r | |
36 | 0xdea652b0, 0xd587, 0x4c54, { 0xb5, 0xb4, 0xc6, 0x82, 0xe7, 0xa0, 0xaa, 0x3d }\r | |
37 | };\r | |
38 | \r | |
39 | /**\r | |
40 | Allocate memory below 4G memory address.\r | |
41 | \r | |
42 | This function allocates memory below 4G memory address.\r | |
43 | \r | |
44 | @param MemoryType Memory type of memory to allocate.\r | |
45 | @param Size Size of memory to allocate.\r | |
46 | \r | |
47 | @return Allocated address for output.\r | |
48 | \r | |
49 | **/\r | |
50 | VOID*\r | |
51 | AllocateMemoryBelow4G (\r | |
52 | IN EFI_MEMORY_TYPE MemoryType,\r | |
53 | IN UINTN Size\r | |
54 | )\r | |
55 | {\r | |
56 | UINTN Pages;\r | |
57 | EFI_PHYSICAL_ADDRESS Address;\r | |
58 | EFI_STATUS Status;\r | |
59 | VOID* Buffer;\r | |
60 | \r | |
61 | Pages = EFI_SIZE_TO_PAGES (Size);\r | |
62 | Address = 0xffffffff;\r | |
63 | \r | |
64 | Status = gBS->AllocatePages (\r | |
65 | AllocateMaxAddress,\r | |
66 | MemoryType,\r | |
67 | Pages,\r | |
68 | &Address\r | |
69 | );\r | |
70 | ASSERT_EFI_ERROR (Status);\r | |
71 | \r | |
72 | Buffer = (VOID *) (UINTN) Address;\r | |
73 | ZeroMem (Buffer, Size);\r | |
74 | \r | |
75 | return Buffer;\r | |
76 | }\r | |
77 | \r | |
78 | /**\r | |
79 | \r | |
80 | This function scan ACPI table in RSDT.\r | |
81 | \r | |
82 | @param Rsdt ACPI RSDT\r | |
83 | @param Signature ACPI table signature\r | |
84 | \r | |
85 | @return ACPI table\r | |
86 | \r | |
87 | **/\r | |
88 | VOID *\r | |
89 | ScanTableInRSDT (\r | |
90 | IN EFI_ACPI_DESCRIPTION_HEADER *Rsdt,\r | |
91 | IN UINT32 Signature\r | |
92 | )\r | |
93 | {\r | |
94 | UINTN Index;\r | |
95 | UINT32 EntryCount;\r | |
96 | UINT32 *EntryPtr;\r | |
97 | EFI_ACPI_DESCRIPTION_HEADER *Table;\r | |
98 | \r | |
99 | if (Rsdt == NULL) {\r | |
100 | return NULL;\r | |
101 | }\r | |
102 | \r | |
103 | EntryCount = (Rsdt->Length - sizeof (EFI_ACPI_DESCRIPTION_HEADER)) / sizeof(UINT32);\r | |
104 | \r | |
105 | EntryPtr = (UINT32 *)(Rsdt + 1);\r | |
106 | for (Index = 0; Index < EntryCount; Index ++, EntryPtr ++) {\r | |
107 | Table = (EFI_ACPI_DESCRIPTION_HEADER *)((UINTN)(*EntryPtr));\r | |
108 | if (Table->Signature == Signature) {\r | |
109 | return Table;\r | |
110 | }\r | |
111 | }\r | |
112 | \r | |
113 | return NULL;\r | |
114 | }\r | |
115 | \r | |
116 | /**\r | |
117 | \r | |
118 | This function scan ACPI table in XSDT.\r | |
119 | \r | |
120 | @param Xsdt ACPI XSDT\r | |
121 | @param Signature ACPI table signature\r | |
122 | \r | |
123 | @return ACPI table\r | |
124 | \r | |
125 | **/\r | |
126 | VOID *\r | |
127 | ScanTableInXSDT (\r | |
128 | IN EFI_ACPI_DESCRIPTION_HEADER *Xsdt,\r | |
129 | IN UINT32 Signature\r | |
130 | )\r | |
131 | {\r | |
132 | UINTN Index;\r | |
133 | UINT32 EntryCount;\r | |
134 | UINT64 EntryPtr;\r | |
135 | UINTN BasePtr;\r | |
136 | EFI_ACPI_DESCRIPTION_HEADER *Table;\r | |
137 | \r | |
138 | if (Xsdt == NULL) {\r | |
139 | return NULL;\r | |
140 | }\r | |
141 | \r | |
142 | EntryCount = (Xsdt->Length - sizeof (EFI_ACPI_DESCRIPTION_HEADER)) / sizeof(UINT64);\r | |
143 | \r | |
144 | BasePtr = (UINTN)(Xsdt + 1);\r | |
145 | for (Index = 0; Index < EntryCount; Index ++) {\r | |
146 | CopyMem (&EntryPtr, (VOID *)(BasePtr + Index * sizeof(UINT64)), sizeof(UINT64));\r | |
147 | Table = (EFI_ACPI_DESCRIPTION_HEADER *)((UINTN)(EntryPtr));\r | |
148 | if (Table->Signature == Signature) {\r | |
149 | return Table;\r | |
150 | }\r | |
151 | }\r | |
152 | \r | |
153 | return NULL;\r | |
154 | }\r | |
155 | \r | |
156 | /**\r | |
157 | To find Facs in FADT.\r | |
158 | \r | |
159 | @param Fadt FADT table pointer\r | |
160 | \r | |
161 | @return Facs table pointer.\r | |
162 | **/\r | |
163 | EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *\r | |
164 | FindAcpiFacsFromFadt (\r | |
165 | IN EFI_ACPI_2_0_FIXED_ACPI_DESCRIPTION_TABLE *Fadt\r | |
166 | )\r | |
167 | {\r | |
168 | EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *Facs;\r | |
169 | UINT64 Data64;\r | |
170 | \r | |
171 | if (Fadt == NULL) {\r | |
172 | return NULL;\r | |
173 | }\r | |
174 | \r | |
175 | if (Fadt->Header.Revision < EFI_ACPI_2_0_FIXED_ACPI_DESCRIPTION_TABLE_REVISION) {\r | |
176 | Facs = (EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *)(UINTN)Fadt->FirmwareCtrl;\r | |
177 | } else {\r | |
178 | if (Fadt->FirmwareCtrl != 0) {\r | |
179 | Facs = (EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *)(UINTN)Fadt->FirmwareCtrl;\r | |
180 | } else {\r | |
181 | CopyMem (&Data64, &Fadt->XFirmwareCtrl, sizeof(UINT64));\r | |
182 | Facs = (EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *)(UINTN)Data64;\r | |
183 | }\r | |
184 | }\r | |
185 | return Facs;\r | |
186 | }\r | |
187 | \r | |
188 | /**\r | |
189 | To find Facs in Acpi tables.\r | |
190 | \r | |
191 | To find Firmware ACPI control strutcure in Acpi Tables since the S3 waking vector is stored \r | |
192 | in the table.\r | |
193 | \r | |
194 | @param AcpiTableGuid The guid used to find ACPI table in UEFI ConfigurationTable.\r | |
195 | \r | |
196 | @return Facs table pointer.\r | |
197 | **/\r | |
198 | EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *\r | |
199 | FindAcpiFacsTableByAcpiGuid (\r | |
200 | IN EFI_GUID *AcpiTableGuid\r | |
201 | )\r | |
202 | {\r | |
203 | EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER *Rsdp;\r | |
204 | EFI_ACPI_DESCRIPTION_HEADER *Rsdt;\r | |
205 | EFI_ACPI_DESCRIPTION_HEADER *Xsdt;\r | |
206 | EFI_ACPI_2_0_FIXED_ACPI_DESCRIPTION_TABLE *Fadt;\r | |
207 | EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *Facs;\r | |
208 | UINTN Index;\r | |
209 | \r | |
210 | Rsdp = NULL;\r | |
211 | //\r | |
212 | // found ACPI table RSD_PTR from system table\r | |
213 | //\r | |
214 | for (Index = 0; Index < gST->NumberOfTableEntries; Index++) {\r | |
215 | if (CompareGuid (&(gST->ConfigurationTable[Index].VendorGuid), AcpiTableGuid)) {\r | |
216 | //\r | |
217 | // A match was found.\r | |
218 | //\r | |
219 | Rsdp = gST->ConfigurationTable[Index].VendorTable;\r | |
220 | break;\r | |
221 | }\r | |
222 | }\r | |
223 | \r | |
224 | if (Rsdp == NULL) {\r | |
225 | return NULL;\r | |
226 | }\r | |
227 | \r | |
228 | //\r | |
229 | // Search XSDT\r | |
230 | //\r | |
231 | if (Rsdp->Revision >= EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER_REVISION) {\r | |
232 | Xsdt = (EFI_ACPI_DESCRIPTION_HEADER *)(UINTN) Rsdp->XsdtAddress;\r | |
233 | Fadt = ScanTableInXSDT (Xsdt, EFI_ACPI_2_0_FIXED_ACPI_DESCRIPTION_TABLE_SIGNATURE);\r | |
234 | if (Fadt != NULL) {\r | |
235 | Facs = FindAcpiFacsFromFadt (Fadt);\r | |
236 | if (Facs != NULL) {\r | |
237 | return Facs;\r | |
238 | }\r | |
239 | }\r | |
240 | }\r | |
241 | \r | |
242 | //\r | |
243 | // Search RSDT\r | |
244 | //\r | |
245 | Rsdt = (EFI_ACPI_DESCRIPTION_HEADER *)(UINTN) Rsdp->RsdtAddress;\r | |
246 | Fadt = ScanTableInRSDT (Rsdt, EFI_ACPI_2_0_FIXED_ACPI_DESCRIPTION_TABLE_SIGNATURE);\r | |
247 | if (Fadt != NULL) {\r | |
248 | Facs = FindAcpiFacsFromFadt (Fadt);\r | |
249 | if (Facs != NULL) {\r | |
250 | return Facs;\r | |
251 | }\r | |
252 | }\r | |
253 | \r | |
254 | return NULL;\r | |
255 | }\r | |
256 | \r | |
257 | /**\r | |
258 | To find Facs in Acpi tables.\r | |
259 | \r | |
260 | To find Firmware ACPI control strutcure in Acpi Tables since the S3 waking vector is stored \r | |
261 | in the table.\r | |
262 | \r | |
263 | @return Facs table pointer.\r | |
264 | **/\r | |
265 | EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *\r | |
266 | FindAcpiFacsTable (\r | |
267 | VOID\r | |
268 | )\r | |
269 | {\r | |
270 | EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *Facs;\r | |
271 | \r | |
272 | Facs = FindAcpiFacsTableByAcpiGuid (&gEfiAcpi20TableGuid);\r | |
273 | if (Facs != NULL) {\r | |
274 | return Facs;\r | |
275 | }\r | |
276 | \r | |
277 | return FindAcpiFacsTableByAcpiGuid (&gEfiAcpi10TableGuid);\r | |
278 | }\r | |
279 | \r | |
280 | /**\r | |
281 | The function will check if long mode waking vector is supported.\r | |
282 | \r | |
283 | @param[in] Facs Pointer to FACS table.\r | |
284 | \r | |
285 | @retval TRUE Long mode waking vector is supported.\r | |
286 | @retval FALSE Long mode waking vector is not supported.\r | |
287 | \r | |
288 | **/\r | |
289 | BOOLEAN\r | |
290 | IsLongModeWakingVectorSupport (\r | |
291 | IN EFI_ACPI_4_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *Facs\r | |
292 | )\r | |
293 | {\r | |
294 | if ((Facs == NULL) ||\r | |
295 | (Facs->Signature != EFI_ACPI_4_0_FIRMWARE_ACPI_CONTROL_STRUCTURE_SIGNATURE) ) {\r | |
296 | //\r | |
297 | // Something wrong with FACS.\r | |
298 | //\r | |
299 | return FALSE;\r | |
300 | }\r | |
301 | if ((Facs->Version == EFI_ACPI_4_0_FIRMWARE_ACPI_CONTROL_STRUCTURE_VERSION) &&\r | |
302 | ((Facs->Flags & EFI_ACPI_4_0_64BIT_WAKE_SUPPORTED_F) != 0)) {\r | |
303 | //\r | |
304 | // BIOS supports 64bit waking vector.\r | |
305 | //\r | |
306 | if (FeaturePcdGet (PcdDxeIplSwitchToLongMode)) {\r | |
307 | return TRUE;\r | |
308 | }\r | |
309 | }\r | |
310 | return FALSE;\r | |
311 | }\r | |
312 | \r | |
313 | /**\r | |
314 | Allocates page table buffer.\r | |
315 | \r | |
316 | @param[in] LongModeWakingVectorSupport Support long mode waking vector or not.\r | |
317 | \r | |
318 | If BootScriptExector driver will run in 64-bit mode, this function will establish the 1:1 \r | |
319 | virtual to physical mapping page table when long mode waking vector is supported, otherwise\r | |
320 | create 4G page table when long mode waking vector is not supported and let PF handler to\r | |
321 | handle > 4G request.\r | |
322 | If BootScriptExector driver will not run in 64-bit mode, this function will do nothing. \r | |
323 | \r | |
324 | @return Page table base address. \r | |
325 | \r | |
326 | **/\r | |
327 | EFI_PHYSICAL_ADDRESS\r | |
328 | S3AllocatePageTablesBuffer (\r | |
329 | IN BOOLEAN LongModeWakingVectorSupport\r | |
330 | )\r | |
331 | { \r | |
332 | if (FeaturePcdGet (PcdDxeIplSwitchToLongMode)) {\r | |
333 | UINTN ExtraPageTablePages;\r | |
334 | UINT32 RegEax;\r | |
335 | UINT32 RegEdx;\r | |
336 | UINT8 PhysicalAddressBits;\r | |
337 | UINT32 NumberOfPml4EntriesNeeded;\r | |
338 | UINT32 NumberOfPdpEntriesNeeded;\r | |
339 | EFI_PHYSICAL_ADDRESS S3NvsPageTableAddress;\r | |
340 | UINTN TotalPageTableSize;\r | |
341 | VOID *Hob;\r | |
342 | BOOLEAN Page1GSupport;\r | |
343 | \r | |
344 | Page1GSupport = FALSE;\r | |
345 | if (PcdGetBool(PcdUse1GPageTable)) {\r | |
346 | AsmCpuid (0x80000000, &RegEax, NULL, NULL, NULL);\r | |
347 | if (RegEax >= 0x80000001) {\r | |
348 | AsmCpuid (0x80000001, NULL, NULL, NULL, &RegEdx);\r | |
349 | if ((RegEdx & BIT26) != 0) {\r | |
350 | Page1GSupport = TRUE;\r | |
351 | }\r | |
352 | }\r | |
353 | }\r | |
354 | \r | |
355 | //\r | |
356 | // Get physical address bits supported.\r | |
357 | //\r | |
358 | Hob = GetFirstHob (EFI_HOB_TYPE_CPU);\r | |
359 | if (Hob != NULL) {\r | |
360 | PhysicalAddressBits = ((EFI_HOB_CPU *) Hob)->SizeOfMemorySpace;\r | |
361 | } else {\r | |
362 | AsmCpuid (0x80000000, &RegEax, NULL, NULL, NULL);\r | |
363 | if (RegEax >= 0x80000008) {\r | |
364 | AsmCpuid (0x80000008, &RegEax, NULL, NULL, NULL);\r | |
365 | PhysicalAddressBits = (UINT8) RegEax;\r | |
366 | } else {\r | |
367 | PhysicalAddressBits = 36;\r | |
368 | }\r | |
369 | }\r | |
370 | \r | |
371 | //\r | |
372 | // IA-32e paging translates 48-bit linear addresses to 52-bit physical addresses.\r | |
373 | //\r | |
374 | ASSERT (PhysicalAddressBits <= 52);\r | |
375 | if (PhysicalAddressBits > 48) {\r | |
376 | PhysicalAddressBits = 48;\r | |
377 | }\r | |
378 | \r | |
379 | ExtraPageTablePages = 0;\r | |
380 | if (!LongModeWakingVectorSupport) {\r | |
381 | //\r | |
382 | // Create 4G page table when BIOS does not support long mode waking vector,\r | |
383 | // and let PF handler to handle > 4G request.\r | |
384 | //\r | |
385 | PhysicalAddressBits = 32;\r | |
386 | ExtraPageTablePages = EXTRA_PAGE_TABLE_PAGES;\r | |
387 | }\r | |
388 | \r | |
389 | //\r | |
390 | // Calculate the table entries needed.\r | |
391 | //\r | |
392 | if (PhysicalAddressBits <= 39 ) {\r | |
393 | NumberOfPml4EntriesNeeded = 1;\r | |
394 | NumberOfPdpEntriesNeeded = (UINT32)LShiftU64 (1, (PhysicalAddressBits - 30));\r | |
395 | } else {\r | |
396 | NumberOfPml4EntriesNeeded = (UINT32)LShiftU64 (1, (PhysicalAddressBits - 39));\r | |
397 | NumberOfPdpEntriesNeeded = 512;\r | |
398 | }\r | |
399 | \r | |
400 | //\r | |
401 | // We need calculate whole page size then allocate once, because S3 restore page table does not know each page in Nvs.\r | |
402 | //\r | |
403 | if (!Page1GSupport) {\r | |
16f69227 | 404 | TotalPageTableSize = 1 + NumberOfPml4EntriesNeeded + NumberOfPml4EntriesNeeded * NumberOfPdpEntriesNeeded;\r |
bd890a73 | 405 | } else {\r |
16f69227 | 406 | TotalPageTableSize = 1 + NumberOfPml4EntriesNeeded;\r |
bd890a73 SZ |
407 | }\r |
408 | \r | |
409 | TotalPageTableSize += ExtraPageTablePages;\r | |
410 | DEBUG ((EFI_D_ERROR, "AcpiS3ContextSave TotalPageTableSize - 0x%x pages\n", TotalPageTableSize));\r | |
411 | \r | |
412 | //\r | |
413 | // By architecture only one PageMapLevel4 exists - so lets allocate storage for it.\r | |
414 | //\r | |
415 | S3NvsPageTableAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)AllocateMemoryBelow4G (EfiReservedMemoryType, EFI_PAGES_TO_SIZE(TotalPageTableSize));\r | |
416 | ASSERT (S3NvsPageTableAddress != 0);\r | |
417 | return S3NvsPageTableAddress;\r | |
418 | } else {\r | |
419 | //\r | |
420 | // If DXE is running 32-bit mode, no need to establish page table.\r | |
421 | //\r | |
422 | return (EFI_PHYSICAL_ADDRESS) 0; \r | |
423 | }\r | |
424 | }\r | |
425 | \r | |
426 | /**\r | |
427 | Callback function executed when the EndOfDxe event group is signaled.\r | |
428 | \r | |
429 | @param[in] Event Event whose notification function is being invoked.\r | |
430 | @param[in] Context The pointer to the notification function's context, which\r | |
431 | is implementation-dependent.\r | |
432 | **/\r | |
433 | VOID\r | |
434 | EFIAPI\r | |
435 | AcpiS3ContextSaveOnEndOfDxe (\r | |
436 | IN EFI_EVENT Event,\r | |
437 | IN VOID *Context\r | |
438 | )\r | |
439 | {\r | |
440 | EFI_STATUS Status;\r | |
441 | EFI_PHYSICAL_ADDRESS AcpiS3ContextBuffer;\r | |
442 | ACPI_S3_CONTEXT *AcpiS3Context;\r | |
443 | IA32_DESCRIPTOR *Idtr;\r | |
444 | IA32_IDT_GATE_DESCRIPTOR *IdtGate;\r | |
445 | EFI_ACPI_4_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *Facs;\r | |
446 | VOID *Interface;\r | |
447 | \r | |
448 | DEBUG ((EFI_D_INFO, "AcpiS3ContextSave!\n"));\r | |
449 | \r | |
450 | Status = gBS->LocateProtocol (&gEfiLockBoxProtocolGuid, NULL, &Interface);\r | |
451 | if (EFI_ERROR (Status)) {\r | |
452 | DEBUG ((EFI_D_INFO | EFI_D_WARN, "ACPI S3 context can't be saved without LockBox!\n"));\r | |
453 | goto Done;\r | |
454 | }\r | |
455 | \r | |
456 | AcpiS3Context = AllocateMemoryBelow4G (EfiReservedMemoryType, sizeof(*AcpiS3Context));\r | |
457 | ASSERT (AcpiS3Context != NULL);\r | |
458 | AcpiS3ContextBuffer = (EFI_PHYSICAL_ADDRESS)(UINTN)AcpiS3Context;\r | |
459 | \r | |
460 | //\r | |
461 | // Get ACPI Table because we will save its position to variable\r | |
462 | //\r | |
463 | Facs = (EFI_ACPI_4_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *) FindAcpiFacsTable ();\r | |
464 | AcpiS3Context->AcpiFacsTable = (EFI_PHYSICAL_ADDRESS) (UINTN) Facs;\r | |
465 | ASSERT (AcpiS3Context->AcpiFacsTable != 0);\r | |
466 | \r | |
467 | IdtGate = AllocateMemoryBelow4G (EfiReservedMemoryType, sizeof(IA32_IDT_GATE_DESCRIPTOR) * 0x100 + sizeof(IA32_DESCRIPTOR));\r | |
468 | Idtr = (IA32_DESCRIPTOR *)(IdtGate + 0x100);\r | |
469 | Idtr->Base = (UINTN)IdtGate;\r | |
470 | Idtr->Limit = (UINT16)(sizeof(IA32_IDT_GATE_DESCRIPTOR) * 0x100 - 1);\r | |
471 | AcpiS3Context->IdtrProfile = (EFI_PHYSICAL_ADDRESS)(UINTN)Idtr;\r | |
472 | \r | |
473 | Status = SaveLockBox (\r | |
474 | &mAcpiS3IdtrProfileGuid,\r | |
475 | (VOID *)(UINTN)Idtr,\r | |
476 | (UINTN)sizeof(IA32_DESCRIPTOR)\r | |
477 | );\r | |
478 | ASSERT_EFI_ERROR (Status);\r | |
479 | \r | |
480 | Status = SetLockBoxAttributes (&mAcpiS3IdtrProfileGuid, LOCK_BOX_ATTRIBUTE_RESTORE_IN_PLACE);\r | |
481 | ASSERT_EFI_ERROR (Status);\r | |
482 | \r | |
483 | //\r | |
484 | // Allocate page table\r | |
485 | //\r | |
486 | AcpiS3Context->S3NvsPageTableAddress = S3AllocatePageTablesBuffer (IsLongModeWakingVectorSupport (Facs));\r | |
487 | \r | |
488 | //\r | |
489 | // Allocate stack\r | |
490 | //\r | |
491 | AcpiS3Context->BootScriptStackSize = PcdGet32 (PcdS3BootScriptStackSize);\r | |
492 | AcpiS3Context->BootScriptStackBase = (EFI_PHYSICAL_ADDRESS)(UINTN)AllocateMemoryBelow4G (EfiReservedMemoryType, PcdGet32 (PcdS3BootScriptStackSize));\r | |
493 | ASSERT (AcpiS3Context->BootScriptStackBase != 0);\r | |
494 | \r | |
495 | //\r | |
496 | // Allocate a code buffer < 4G for S3 debug to load external code, set invalid code instructions in it.\r | |
497 | //\r | |
498 | AcpiS3Context->S3DebugBufferAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)AllocateMemoryBelow4G (EfiReservedMemoryType, EFI_PAGE_SIZE);\r | |
499 | SetMem ((VOID *)(UINTN)AcpiS3Context->S3DebugBufferAddress, EFI_PAGE_SIZE, 0xff);\r | |
500 | \r | |
501 | DEBUG((EFI_D_INFO, "AcpiS3Context: AcpiFacsTable is 0x%8x\n", AcpiS3Context->AcpiFacsTable));\r | |
502 | DEBUG((EFI_D_INFO, "AcpiS3Context: IdtrProfile is 0x%8x\n", AcpiS3Context->IdtrProfile));\r | |
503 | DEBUG((EFI_D_INFO, "AcpiS3Context: S3NvsPageTableAddress is 0x%8x\n", AcpiS3Context->S3NvsPageTableAddress));\r | |
504 | DEBUG((EFI_D_INFO, "AcpiS3Context: S3DebugBufferAddress is 0x%8x\n", AcpiS3Context->S3DebugBufferAddress));\r | |
505 | DEBUG((EFI_D_INFO, "AcpiS3Context: BootScriptStackBase is 0x%8x\n", AcpiS3Context->BootScriptStackBase));\r | |
506 | DEBUG((EFI_D_INFO, "AcpiS3Context: BootScriptStackSize is 0x%8x\n", AcpiS3Context->BootScriptStackSize));\r | |
507 | \r | |
508 | Status = SaveLockBox (\r | |
509 | &gEfiAcpiVariableGuid,\r | |
510 | &AcpiS3ContextBuffer,\r | |
511 | sizeof(AcpiS3ContextBuffer)\r | |
512 | );\r | |
513 | ASSERT_EFI_ERROR (Status);\r | |
514 | \r | |
515 | Status = SaveLockBox (\r | |
516 | &gEfiAcpiS3ContextGuid,\r | |
517 | (VOID *)(UINTN)AcpiS3Context,\r | |
518 | (UINTN)sizeof(*AcpiS3Context)\r | |
519 | );\r | |
520 | ASSERT_EFI_ERROR (Status);\r | |
521 | \r | |
522 | Status = SetLockBoxAttributes (&gEfiAcpiS3ContextGuid, LOCK_BOX_ATTRIBUTE_RESTORE_IN_PLACE);\r | |
523 | ASSERT_EFI_ERROR (Status);\r | |
524 | \r | |
525 | Done:\r | |
526 | //\r | |
527 | // Close the event, deregistering the callback and freeing resources.\r | |
528 | //\r | |
529 | Status = gBS->CloseEvent (Event);\r | |
530 | ASSERT_EFI_ERROR (Status);\r | |
531 | }\r | |
532 | \r |