| | 1 | /** @file\r |
| | 2 | SMM IPL that produces SMM related runtime protocols and load the SMM Core into SMRAM\r |
| | 3 | \r |
| | 4 | Copyright (c) 2009 - 2017, Intel Corporation. All rights reserved.<BR>\r |
| | 5 | This program and the accompanying materials are licensed and made available \r |
| | 6 | under the terms and conditions of the BSD License which accompanies this \r |
| | 7 | distribution. The full text of the license may be found at \r |
| | 8 | http://opensource.org/licenses/bsd-license.php \r |
| | 9 | \r |
| | 10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r |
| | 11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r |
| | 12 | \r |
| | 13 | **/\r |
| | 14 | \r |
| | 15 | #include <PiDxe.h>\r |
| | 16 | \r |
| | 17 | #include <Protocol/SmmBase2.h>\r |
| | 18 | #include <Protocol/SmmCommunication.h>\r |
| | 19 | #include <Protocol/SmmAccess2.h>\r |
| | 20 | #include <Protocol/SmmConfiguration.h>\r |
| | 21 | #include <Protocol/SmmControl2.h>\r |
| | 22 | #include <Protocol/DxeSmmReadyToLock.h>\r |
| | 23 | #include <Protocol/Cpu.h>\r |
| | 24 | \r |
| | 25 | #include <Guid/EventGroup.h>\r |
| | 26 | #include <Guid/EventLegacyBios.h>\r |
| | 27 | #include <Guid/LoadModuleAtFixedAddress.h>\r |
| | 28 | \r |
| | 29 | #include <Library/BaseLib.h>\r |
| | 30 | #include <Library/BaseMemoryLib.h>\r |
| | 31 | #include <Library/PeCoffLib.h>\r |
| | 32 | #include <Library/CacheMaintenanceLib.h>\r |
| | 33 | #include <Library/MemoryAllocationLib.h>\r |
| | 34 | #include <Library/DebugLib.h>\r |
| | 35 | #include <Library/UefiBootServicesTableLib.h>\r |
| | 36 | #include <Library/DxeServicesTableLib.h>\r |
| | 37 | #include <Library/DxeServicesLib.h>\r |
| | 38 | #include <Library/UefiLib.h>\r |
| | 39 | #include <Library/UefiRuntimeLib.h>\r |
| | 40 | #include <Library/PcdLib.h>\r |
| | 41 | #include <Library/ReportStatusCodeLib.h>\r |
| | 42 | \r |
| | 43 | #include "PiSmmCorePrivateData.h"\r |
| | 44 | \r |
| | 45 | //\r |
| | 46 | // Function prototypes from produced protocols\r |
| | 47 | //\r |
| | 48 | \r |
| | 49 | /**\r |
| | 50 | Indicate whether the driver is currently executing in the SMM Initialization phase.\r |
| | 51 | \r |
| | 52 | @param This The EFI_SMM_BASE2_PROTOCOL instance.\r |
| | 53 | @param InSmram Pointer to a Boolean which, on return, indicates that the driver is currently executing\r |
| | 54 | inside of SMRAM (TRUE) or outside of SMRAM (FALSE).\r |
| | 55 | \r |
| | 56 | @retval EFI_INVALID_PARAMETER InSmram was NULL.\r |
| | 57 | @retval EFI_SUCCESS The call returned successfully.\r |
| | 58 | \r |
| | 59 | **/\r |
| | 60 | EFI_STATUS\r |
| | 61 | EFIAPI\r |
| | 62 | SmmBase2InSmram (\r |
| | 63 | IN CONST EFI_SMM_BASE2_PROTOCOL *This,\r |
| | 64 | OUT BOOLEAN *InSmram\r |
| | 65 | );\r |
| | 66 | \r |
| | 67 | /**\r |
| | 68 | Retrieves the location of the System Management System Table (SMST).\r |
| | 69 | \r |
| | 70 | @param This The EFI_SMM_BASE2_PROTOCOL instance.\r |
| | 71 | @param Smst On return, points to a pointer to the System Management Service Table (SMST).\r |
| | 72 | \r |
| | 73 | @retval EFI_INVALID_PARAMETER Smst or This was invalid.\r |
| | 74 | @retval EFI_SUCCESS The memory was returned to the system.\r |
| | 75 | @retval EFI_UNSUPPORTED Not in SMM.\r |
| | 76 | \r |
| | 77 | **/\r |
| | 78 | EFI_STATUS\r |
| | 79 | EFIAPI\r |
| | 80 | SmmBase2GetSmstLocation (\r |
| | 81 | IN CONST EFI_SMM_BASE2_PROTOCOL *This,\r |
| | 82 | OUT EFI_SMM_SYSTEM_TABLE2 **Smst\r |
| | 83 | );\r |
| | 84 | \r |
| | 85 | /**\r |
| | 86 | Communicates with a registered handler.\r |
| | 87 | \r |
| | 88 | This function provides a service to send and receive messages from a registered \r |
| | 89 | UEFI service. This function is part of the SMM Communication Protocol that may \r |
| | 90 | be called in physical mode prior to SetVirtualAddressMap() and in virtual mode \r |
| | 91 | after SetVirtualAddressMap().\r |
| | 92 | \r |
| | 93 | @param[in] This The EFI_SMM_COMMUNICATION_PROTOCOL instance.\r |
| | 94 | @param[in, out] CommBuffer A pointer to the buffer to convey into SMRAM.\r |
| | 95 | @param[in, out] CommSize The size of the data buffer being passed in. On exit, the size of data\r |
| | 96 | being returned. Zero if the handler does not wish to reply with any data.\r |
| | 97 | This parameter is optional and may be NULL.\r |
| | 98 | \r |
| | 99 | @retval EFI_SUCCESS The message was successfully posted.\r |
| | 100 | @retval EFI_INVALID_PARAMETER The CommBuffer was NULL.\r |
| | 101 | @retval EFI_BAD_BUFFER_SIZE The buffer is too large for the MM implementation.\r |
| | 102 | If this error is returned, the MessageLength field\r |
| | 103 | in the CommBuffer header or the integer pointed by\r |
| | 104 | CommSize, are updated to reflect the maximum payload\r |
| | 105 | size the implementation can accommodate.\r |
| | 106 | @retval EFI_ACCESS_DENIED The CommunicateBuffer parameter or CommSize parameter,\r |
| | 107 | if not omitted, are in address range that cannot be\r |
| | 108 | accessed by the MM environment.\r |
| | 109 | \r |
| | 110 | **/\r |
| | 111 | EFI_STATUS\r |
| | 112 | EFIAPI\r |
| | 113 | SmmCommunicationCommunicate (\r |
| | 114 | IN CONST EFI_SMM_COMMUNICATION_PROTOCOL *This,\r |
| | 115 | IN OUT VOID *CommBuffer,\r |
| | 116 | IN OUT UINTN *CommSize OPTIONAL\r |
| | 117 | );\r |
| | 118 | \r |
| | 119 | /**\r |
| | 120 | Event notification that is fired every time a gEfiSmmConfigurationProtocol installs.\r |
| | 121 | \r |
| | 122 | @param Event The Event that is being processed, not used.\r |
| | 123 | @param Context Event Context, not used.\r |
| | 124 | \r |
| | 125 | **/\r |
| | 126 | VOID\r |
| | 127 | EFIAPI\r |
| | 128 | SmmIplSmmConfigurationEventNotify (\r |
| | 129 | IN EFI_EVENT Event,\r |
| | 130 | IN VOID *Context\r |
| | 131 | );\r |
| | 132 | \r |
| | 133 | /**\r |
| | 134 | Event notification that is fired every time a DxeSmmReadyToLock protocol is added\r |
| | 135 | or if gEfiEventReadyToBootGuid is signalled.\r |
| | 136 | \r |
| | 137 | @param Event The Event that is being processed, not used.\r |
| | 138 | @param Context Event Context, not used.\r |
| | 139 | \r |
| | 140 | **/\r |
| | 141 | VOID\r |
| | 142 | EFIAPI\r |
| | 143 | SmmIplReadyToLockEventNotify (\r |
| | 144 | IN EFI_EVENT Event,\r |
| | 145 | IN VOID *Context\r |
| | 146 | );\r |
| | 147 | \r |
| | 148 | /**\r |
| | 149 | Event notification that is fired when DxeDispatch Event Group is signaled.\r |
| | 150 | \r |
| | 151 | @param Event The Event that is being processed, not used.\r |
| | 152 | @param Context Event Context, not used.\r |
| | 153 | \r |
| | 154 | **/\r |
| | 155 | VOID\r |
| | 156 | EFIAPI\r |
| | 157 | SmmIplDxeDispatchEventNotify (\r |
| | 158 | IN EFI_EVENT Event,\r |
| | 159 | IN VOID *Context\r |
| | 160 | );\r |
| | 161 | \r |
| | 162 | /**\r |
| | 163 | Event notification that is fired when a GUIDed Event Group is signaled.\r |
| | 164 | \r |
| | 165 | @param Event The Event that is being processed, not used.\r |
| | 166 | @param Context Event Context, not used.\r |
| | 167 | \r |
| | 168 | **/\r |
| | 169 | VOID\r |
| | 170 | EFIAPI\r |
| | 171 | SmmIplGuidedEventNotify (\r |
| | 172 | IN EFI_EVENT Event,\r |
| | 173 | IN VOID *Context\r |
| | 174 | );\r |
| | 175 | \r |
| | 176 | /**\r |
| | 177 | Event notification that is fired when EndOfDxe Event Group is signaled.\r |
| | 178 | \r |
| | 179 | @param Event The Event that is being processed, not used.\r |
| | 180 | @param Context Event Context, not used.\r |
| | 181 | \r |
| | 182 | **/\r |
| | 183 | VOID\r |
| | 184 | EFIAPI\r |
| | 185 | SmmIplEndOfDxeEventNotify (\r |
| | 186 | IN EFI_EVENT Event,\r |
| | 187 | IN VOID *Context\r |
| | 188 | );\r |
| | 189 | \r |
| | 190 | /**\r |
| | 191 | Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE.\r |
| | 192 | \r |
| | 193 | This is a notification function registered on EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r |
| | 194 | It convers pointer to new virtual address.\r |
| | 195 | \r |
| | 196 | @param Event Event whose notification function is being invoked.\r |
| | 197 | @param Context Pointer to the notification function's context.\r |
| | 198 | \r |
| | 199 | **/\r |
| | 200 | VOID\r |
| | 201 | EFIAPI\r |
| | 202 | SmmIplSetVirtualAddressNotify (\r |
| | 203 | IN EFI_EVENT Event,\r |
| | 204 | IN VOID *Context\r |
| | 205 | );\r |
| | 206 | \r |
| | 207 | //\r |
| | 208 | // Data structure used to declare a table of protocol notifications and event \r |
| | 209 | // notifications required by the SMM IPL\r |
| | 210 | //\r |
| | 211 | typedef struct {\r |
| | 212 | BOOLEAN Protocol;\r |
| | 213 | BOOLEAN CloseOnLock;\r |
| | 214 | EFI_GUID *Guid;\r |
| | 215 | EFI_EVENT_NOTIFY NotifyFunction;\r |
| | 216 | VOID *NotifyContext;\r |
| | 217 | EFI_TPL NotifyTpl;\r |
| | 218 | EFI_EVENT Event;\r |
| | 219 | } SMM_IPL_EVENT_NOTIFICATION;\r |
| | 220 | \r |
| | 221 | //\r |
| | 222 | // Handle to install the SMM Base2 Protocol and the SMM Communication Protocol\r |
| | 223 | //\r |
| | 224 | EFI_HANDLE mSmmIplHandle = NULL;\r |
| | 225 | \r |
| | 226 | //\r |
| | 227 | // SMM Base 2 Protocol instance\r |
| | 228 | //\r |
| | 229 | EFI_SMM_BASE2_PROTOCOL mSmmBase2 = {\r |
| | 230 | SmmBase2InSmram,\r |
| | 231 | SmmBase2GetSmstLocation\r |
| | 232 | };\r |
| | 233 | \r |
| | 234 | //\r |
| | 235 | // SMM Communication Protocol instance\r |
| | 236 | //\r |
| | 237 | EFI_SMM_COMMUNICATION_PROTOCOL mSmmCommunication = {\r |
| | 238 | SmmCommunicationCommunicate\r |
| | 239 | };\r |
| | 240 | \r |
| | 241 | //\r |
| | 242 | // SMM Core Private Data structure that contains the data shared between\r |
| | 243 | // the SMM IPL and the SMM Core.\r |
| | 244 | //\r |
| | 245 | SMM_CORE_PRIVATE_DATA mSmmCorePrivateData = {\r |
| | 246 | SMM_CORE_PRIVATE_DATA_SIGNATURE, // Signature\r |
| | 247 | NULL, // SmmIplImageHandle\r |
| | 248 | 0, // SmramRangeCount\r |
| | 249 | NULL, // SmramRanges\r |
| | 250 | NULL, // SmmEntryPoint\r |
| | 251 | FALSE, // SmmEntryPointRegistered\r |
| | 252 | FALSE, // InSmm\r |
| | 253 | NULL, // Smst\r |
| | 254 | NULL, // CommunicationBuffer\r |
| | 255 | 0, // BufferSize\r |
| | 256 | EFI_SUCCESS // ReturnStatus\r |
| | 257 | };\r |
| | 258 | \r |
| | 259 | //\r |
| | 260 | // Global pointer used to access mSmmCorePrivateData from outside and inside SMM\r |
| | 261 | //\r |
| | 262 | SMM_CORE_PRIVATE_DATA *gSmmCorePrivate = &mSmmCorePrivateData;\r |
| | 263 | \r |
| | 264 | //\r |
| | 265 | // SMM IPL global variables\r |
| | 266 | //\r |
| | 267 | EFI_SMM_CONTROL2_PROTOCOL *mSmmControl2;\r |
| | 268 | EFI_SMM_ACCESS2_PROTOCOL *mSmmAccess;\r |
| | 269 | EFI_SMRAM_DESCRIPTOR *mCurrentSmramRange;\r |
| | 270 | BOOLEAN mSmmLocked = FALSE;\r |
| | 271 | BOOLEAN mEndOfDxe = FALSE;\r |
| | 272 | EFI_PHYSICAL_ADDRESS mSmramCacheBase;\r |
| | 273 | UINT64 mSmramCacheSize;\r |
| | 274 | \r |
| | 275 | EFI_SMM_COMMUNICATE_HEADER mCommunicateHeader;\r |
| | 276 | EFI_LOAD_FIXED_ADDRESS_CONFIGURATION_TABLE *mLMFAConfigurationTable = NULL;\r |
| | 277 | \r |
| | 278 | //\r |
| | 279 | // Table of Protocol notification and GUIDed Event notifications that the SMM IPL requires\r |
| | 280 | //\r |
| | 281 | SMM_IPL_EVENT_NOTIFICATION mSmmIplEvents[] = {\r |
| | 282 | //\r |
| | 283 | // Declare protocol notification on the SMM Configuration protocol. When this notification is established,\r |
| | 284 | // the associated event is immediately signalled, so the notification function will be executed and the \r |
| | 285 | // SMM Configuration Protocol will be found if it is already in the handle database.\r |
| | 286 | //\r |
| | 287 | { TRUE, FALSE, &gEfiSmmConfigurationProtocolGuid, SmmIplSmmConfigurationEventNotify, &gEfiSmmConfigurationProtocolGuid, TPL_NOTIFY, NULL },\r |
| | 288 | //\r |
| | 289 | // Declare protocol notification on DxeSmmReadyToLock protocols. When this notification is established, \r |
| | 290 | // the associated event is immediately signalled, so the notification function will be executed and the \r |
| | 291 | // DXE SMM Ready To Lock Protocol will be found if it is already in the handle database.\r |
| | 292 | //\r |
| | 293 | { TRUE, TRUE, &gEfiDxeSmmReadyToLockProtocolGuid, SmmIplReadyToLockEventNotify, &gEfiDxeSmmReadyToLockProtocolGuid, TPL_CALLBACK, NULL },\r |
| | 294 | //\r |
| | 295 | // Declare event notification on EndOfDxe event. When this notification is established,\r |
| | 296 | // the associated event is immediately signalled, so the notification function will be executed and the \r |
| | 297 | // SMM End Of Dxe Protocol will be found if it is already in the handle database.\r |
| | 298 | //\r |
| | 299 | { FALSE, TRUE, &gEfiEndOfDxeEventGroupGuid, SmmIplGuidedEventNotify, &gEfiEndOfDxeEventGroupGuid, TPL_CALLBACK, NULL },\r |
| | 300 | //\r |
| | 301 | // Declare event notification on EndOfDxe event. This is used to set EndOfDxe event signaled flag.\r |
| | 302 | //\r |
| | 303 | { FALSE, TRUE, &gEfiEndOfDxeEventGroupGuid, SmmIplEndOfDxeEventNotify, &gEfiEndOfDxeEventGroupGuid, TPL_CALLBACK, NULL },\r |
| | 304 | //\r |
| | 305 | // Declare event notification on the DXE Dispatch Event Group. This event is signaled by the DXE Core\r |
| | 306 | // each time the DXE Core dispatcher has completed its work. When this event is signalled, the SMM Core\r |
| | 307 | // if notified, so the SMM Core can dispatch SMM drivers.\r |
| | 308 | //\r |
| | 309 | { FALSE, TRUE, &gEfiEventDxeDispatchGuid, SmmIplDxeDispatchEventNotify, &gEfiEventDxeDispatchGuid, TPL_CALLBACK, NULL },\r |
| | 310 | //\r |
| | 311 | // Declare event notification on Ready To Boot Event Group. This is an extra event notification that is\r |
| | 312 | // used to make sure SMRAM is locked before any boot options are processed.\r |
| | 313 | //\r |
| | 314 | { FALSE, TRUE, &gEfiEventReadyToBootGuid, SmmIplReadyToLockEventNotify, &gEfiEventReadyToBootGuid, TPL_CALLBACK, NULL },\r |
| | 315 | //\r |
| | 316 | // Declare event notification on Legacy Boot Event Group. This is used to inform the SMM Core that the platform \r |
| | 317 | // is performing a legacy boot operation, and that the UEFI environment is no longer available and the SMM Core \r |
| | 318 | // must guarantee that it does not access any UEFI related structures outside of SMRAM.\r |
| | 319 | // It is also to inform the SMM Core to notify SMM driver that system enter legacy boot.\r |
| | 320 | //\r |
| | 321 | { FALSE, FALSE, &gEfiEventLegacyBootGuid, SmmIplGuidedEventNotify, &gEfiEventLegacyBootGuid, TPL_CALLBACK, NULL },\r |
| | 322 | //\r |
| | 323 | // Declare event notification on Exit Boot Services Event Group. This is used to inform the SMM Core\r |
| | 324 | // to notify SMM driver that system enter exit boot services.\r |
| | 325 | //\r |
| | 326 | { FALSE, FALSE, &gEfiEventExitBootServicesGuid, SmmIplGuidedEventNotify, &gEfiEventExitBootServicesGuid, TPL_CALLBACK, NULL },\r |
| | 327 | //\r |
| | 328 | // Declare event notification on Ready To Boot Event Group. This is used to inform the SMM Core\r |
| | 329 | // to notify SMM driver that system enter ready to boot.\r |
| | 330 | //\r |
| | 331 | { FALSE, FALSE, &gEfiEventReadyToBootGuid, SmmIplGuidedEventNotify, &gEfiEventReadyToBootGuid, TPL_CALLBACK, NULL },\r |
| | 332 | //\r |
| | 333 | // Declare event notification on SetVirtualAddressMap() Event Group. This is used to convert gSmmCorePrivate \r |
| | 334 | // and mSmmControl2 from physical addresses to virtual addresses.\r |
| | 335 | //\r |
| | 336 | { FALSE, FALSE, &gEfiEventVirtualAddressChangeGuid, SmmIplSetVirtualAddressNotify, NULL, TPL_CALLBACK, NULL },\r |
| | 337 | //\r |
| | 338 | // Terminate the table of event notifications\r |
| | 339 | //\r |
| | 340 | { FALSE, FALSE, NULL, NULL, NULL, TPL_CALLBACK, NULL }\r |
| | 341 | };\r |
| | 342 | \r |
| | 343 | /**\r |
| | 344 | Find the maximum SMRAM cache range that covers the range specified by SmramRange.\r |
| | 345 | \r |
| | 346 | This function searches and joins all adjacent ranges of SmramRange into a range to be cached.\r |
| | 347 | \r |
| | 348 | @param SmramRange The SMRAM range to search from.\r |
| | 349 | @param SmramCacheBase The returned cache range base.\r |
| | 350 | @param SmramCacheSize The returned cache range size.\r |
| | 351 | \r |
| | 352 | **/\r |
| | 353 | VOID\r |
| | 354 | GetSmramCacheRange (\r |
| | 355 | IN EFI_SMRAM_DESCRIPTOR *SmramRange,\r |
| | 356 | OUT EFI_PHYSICAL_ADDRESS *SmramCacheBase,\r |
| | 357 | OUT UINT64 *SmramCacheSize\r |
| | 358 | )\r |
| | 359 | {\r |
| | 360 | UINTN Index;\r |
| | 361 | EFI_PHYSICAL_ADDRESS RangeCpuStart;\r |
| | 362 | UINT64 RangePhysicalSize;\r |
| | 363 | BOOLEAN FoundAjacentRange;\r |
| | 364 | \r |
| | 365 | *SmramCacheBase = SmramRange->CpuStart;\r |
| | 366 | *SmramCacheSize = SmramRange->PhysicalSize;\r |
| | 367 | \r |
| | 368 | do {\r |
| | 369 | FoundAjacentRange = FALSE;\r |
| | 370 | for (Index = 0; Index < gSmmCorePrivate->SmramRangeCount; Index++) {\r |
| | 371 | RangeCpuStart = gSmmCorePrivate->SmramRanges[Index].CpuStart;\r |
| | 372 | RangePhysicalSize = gSmmCorePrivate->SmramRanges[Index].PhysicalSize;\r |
| | 373 | if (RangeCpuStart < *SmramCacheBase && *SmramCacheBase == (RangeCpuStart + RangePhysicalSize)) {\r |
| | 374 | *SmramCacheBase = RangeCpuStart;\r |
| | 375 | *SmramCacheSize += RangePhysicalSize;\r |
| | 376 | FoundAjacentRange = TRUE;\r |
| | 377 | } else if ((*SmramCacheBase + *SmramCacheSize) == RangeCpuStart && RangePhysicalSize > 0) {\r |
| | 378 | *SmramCacheSize += RangePhysicalSize;\r |
| | 379 | FoundAjacentRange = TRUE;\r |
| | 380 | }\r |
| | 381 | }\r |
| | 382 | } while (FoundAjacentRange);\r |
| | 383 | \r |
| | 384 | }\r |
| | 385 | \r |
| | 386 | /**\r |
| | 387 | Indicate whether the driver is currently executing in the SMM Initialization phase.\r |
| | 388 | \r |
| | 389 | @param This The EFI_SMM_BASE2_PROTOCOL instance.\r |
| | 390 | @param InSmram Pointer to a Boolean which, on return, indicates that the driver is currently executing\r |
| | 391 | inside of SMRAM (TRUE) or outside of SMRAM (FALSE).\r |
| | 392 | \r |
| | 393 | @retval EFI_INVALID_PARAMETER InSmram was NULL.\r |
| | 394 | @retval EFI_SUCCESS The call returned successfully.\r |
| | 395 | \r |
| | 396 | **/\r |
| | 397 | EFI_STATUS\r |
| | 398 | EFIAPI\r |
| | 399 | SmmBase2InSmram (\r |
| | 400 | IN CONST EFI_SMM_BASE2_PROTOCOL *This,\r |
| | 401 | OUT BOOLEAN *InSmram\r |
| | 402 | )\r |
| | 403 | {\r |
| | 404 | if (InSmram == NULL) {\r |
| | 405 | return EFI_INVALID_PARAMETER;\r |
| | 406 | }\r |
| | 407 | \r |
| | 408 | *InSmram = gSmmCorePrivate->InSmm;\r |
| | 409 | \r |
| | 410 | return EFI_SUCCESS;\r |
| | 411 | }\r |
| | 412 | \r |
| | 413 | /**\r |
| | 414 | Retrieves the location of the System Management System Table (SMST).\r |
| | 415 | \r |
| | 416 | @param This The EFI_SMM_BASE2_PROTOCOL instance.\r |
| | 417 | @param Smst On return, points to a pointer to the System Management Service Table (SMST).\r |
| | 418 | \r |
| | 419 | @retval EFI_INVALID_PARAMETER Smst or This was invalid.\r |
| | 420 | @retval EFI_SUCCESS The memory was returned to the system.\r |
| | 421 | @retval EFI_UNSUPPORTED Not in SMM.\r |
| | 422 | \r |
| | 423 | **/\r |
| | 424 | EFI_STATUS\r |
| | 425 | EFIAPI\r |
| | 426 | SmmBase2GetSmstLocation (\r |
| | 427 | IN CONST EFI_SMM_BASE2_PROTOCOL *This,\r |
| | 428 | OUT EFI_SMM_SYSTEM_TABLE2 **Smst\r |
| | 429 | )\r |
| | 430 | {\r |
| | 431 | if ((This == NULL) ||(Smst == NULL)) {\r |
| | 432 | return EFI_INVALID_PARAMETER;\r |
| | 433 | }\r |
| | 434 | \r |
| | 435 | if (!gSmmCorePrivate->InSmm) {\r |
| | 436 | return EFI_UNSUPPORTED;\r |
| | 437 | }\r |
| | 438 | \r |
| | 439 | *Smst = gSmmCorePrivate->Smst;\r |
| | 440 | \r |
| | 441 | return EFI_SUCCESS;\r |
| | 442 | }\r |
| | 443 | \r |
| | 444 | /**\r |
| | 445 | Communicates with a registered handler.\r |
| | 446 | \r |
| | 447 | This function provides a service to send and receive messages from a registered \r |
| | 448 | UEFI service. This function is part of the SMM Communication Protocol that may \r |
| | 449 | be called in physical mode prior to SetVirtualAddressMap() and in virtual mode \r |
| | 450 | after SetVirtualAddressMap().\r |
| | 451 | \r |
| | 452 | @param[in] This The EFI_SMM_COMMUNICATION_PROTOCOL instance.\r |
| | 453 | @param[in, out] CommBuffer A pointer to the buffer to convey into SMRAM.\r |
| | 454 | @param[in, out] CommSize The size of the data buffer being passed in. On exit, the size of data\r |
| | 455 | being returned. Zero if the handler does not wish to reply with any data.\r |
| | 456 | This parameter is optional and may be NULL.\r |
| | 457 | \r |
| | 458 | @retval EFI_SUCCESS The message was successfully posted.\r |
| | 459 | @retval EFI_INVALID_PARAMETER The CommBuffer was NULL.\r |
| | 460 | @retval EFI_BAD_BUFFER_SIZE The buffer is too large for the MM implementation.\r |
| | 461 | If this error is returned, the MessageLength field\r |
| | 462 | in the CommBuffer header or the integer pointed by\r |
| | 463 | CommSize, are updated to reflect the maximum payload\r |
| | 464 | size the implementation can accommodate.\r |
| | 465 | @retval EFI_ACCESS_DENIED The CommunicateBuffer parameter or CommSize parameter,\r |
| | 466 | if not omitted, are in address range that cannot be\r |
| | 467 | accessed by the MM environment.\r |
| | 468 | \r |
| | 469 | **/\r |
| | 470 | EFI_STATUS\r |
| | 471 | EFIAPI\r |
| | 472 | SmmCommunicationCommunicate (\r |
| | 473 | IN CONST EFI_SMM_COMMUNICATION_PROTOCOL *This,\r |
| | 474 | IN OUT VOID *CommBuffer,\r |
| | 475 | IN OUT UINTN *CommSize OPTIONAL\r |
| | 476 | )\r |
| | 477 | {\r |
| | 478 | EFI_STATUS Status;\r |
| | 479 | EFI_SMM_COMMUNICATE_HEADER *CommunicateHeader;\r |
| | 480 | BOOLEAN OldInSmm;\r |
| | 481 | UINTN TempCommSize;\r |
| | 482 | \r |
| | 483 | //\r |
| | 484 | // Check parameters\r |
| | 485 | //\r |
| | 486 | if (CommBuffer == NULL) {\r |
| | 487 | return EFI_INVALID_PARAMETER;\r |
| | 488 | }\r |
| | 489 | \r |
| | 490 | CommunicateHeader = (EFI_SMM_COMMUNICATE_HEADER *) CommBuffer;\r |
| | 491 | \r |
| | 492 | if (CommSize == NULL) {\r |
| | 493 | TempCommSize = OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data) + CommunicateHeader->MessageLength;\r |
| | 494 | } else {\r |
| | 495 | TempCommSize = *CommSize;\r |
| | 496 | //\r |
| | 497 | // CommSize must hold HeaderGuid and MessageLength\r |
| | 498 | //\r |
| | 499 | if (TempCommSize < OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data)) {\r |
| | 500 | return EFI_INVALID_PARAMETER;\r |
| | 501 | }\r |
| | 502 | }\r |
| | 503 | \r |
| | 504 | //\r |
| | 505 | // If not already in SMM, then generate a Software SMI\r |
| | 506 | //\r |
| | 507 | if (!gSmmCorePrivate->InSmm && gSmmCorePrivate->SmmEntryPointRegistered) {\r |
| | 508 | //\r |
| | 509 | // Put arguments for Software SMI in gSmmCorePrivate\r |
| | 510 | //\r |
| | 511 | gSmmCorePrivate->CommunicationBuffer = CommBuffer;\r |
| | 512 | gSmmCorePrivate->BufferSize = TempCommSize;\r |
| | 513 | \r |
| | 514 | //\r |
| | 515 | // Generate Software SMI\r |
| | 516 | //\r |
| | 517 | Status = mSmmControl2->Trigger (mSmmControl2, NULL, NULL, FALSE, 0);\r |
| | 518 | if (EFI_ERROR (Status)) {\r |
| | 519 | return EFI_UNSUPPORTED;\r |
| | 520 | }\r |
| | 521 | \r |
| | 522 | //\r |
| | 523 | // Return status from software SMI \r |
| | 524 | //\r |
| | 525 | if (CommSize != NULL) {\r |
| | 526 | *CommSize = gSmmCorePrivate->BufferSize;\r |
| | 527 | }\r |
| | 528 | return gSmmCorePrivate->ReturnStatus;\r |
| | 529 | }\r |
| | 530 | \r |
| | 531 | //\r |
| | 532 | // If we are in SMM, then the execution mode must be physical, which means that\r |
| | 533 | // OS established virtual addresses can not be used. If SetVirtualAddressMap()\r |
| | 534 | // has been called, then a direct invocation of the Software SMI is not allowed,\r |
| | 535 | // so return EFI_INVALID_PARAMETER.\r |
| | 536 | //\r |
| | 537 | if (EfiGoneVirtual()) {\r |
| | 538 | return EFI_INVALID_PARAMETER;\r |
| | 539 | }\r |
| | 540 | \r |
| | 541 | //\r |
| | 542 | // If we are not in SMM, don't allow call SmiManage() directly when SMRAM is closed or locked.\r |
| | 543 | //\r |
| | 544 | if ((!gSmmCorePrivate->InSmm) && (!mSmmAccess->OpenState || mSmmAccess->LockState)) {\r |
| | 545 | return EFI_INVALID_PARAMETER;\r |
| | 546 | }\r |
| | 547 | \r |
| | 548 | //\r |
| | 549 | // Save current InSmm state and set InSmm state to TRUE\r |
| | 550 | //\r |
| | 551 | OldInSmm = gSmmCorePrivate->InSmm;\r |
| | 552 | gSmmCorePrivate->InSmm = TRUE;\r |
| | 553 | \r |
| | 554 | //\r |
| | 555 | // Before SetVirtualAddressMap(), we are in SMM or SMRAM is open and unlocked, call SmiManage() directly.\r |
| | 556 | //\r |
| | 557 | TempCommSize -= OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data);\r |
| | 558 | Status = gSmmCorePrivate->Smst->SmiManage (\r |
| | 559 | &CommunicateHeader->HeaderGuid, \r |
| | 560 | NULL, \r |
| | 561 | CommunicateHeader->Data, \r |
| | 562 | &TempCommSize\r |
| | 563 | );\r |
| | 564 | TempCommSize += OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data);\r |
| | 565 | if (CommSize != NULL) {\r |
| | 566 | *CommSize = TempCommSize;\r |
| | 567 | }\r |
| | 568 | \r |
| | 569 | //\r |
| | 570 | // Restore original InSmm state\r |
| | 571 | //\r |
| | 572 | gSmmCorePrivate->InSmm = OldInSmm;\r |
| | 573 | \r |
| | 574 | return (Status == EFI_SUCCESS) ? EFI_SUCCESS : EFI_NOT_FOUND;\r |
| | 575 | }\r |
| | 576 | \r |
| | 577 | /**\r |
| | 578 | Event notification that is fired when GUIDed Event Group is signaled.\r |
| | 579 | \r |
| | 580 | @param Event The Event that is being processed, not used.\r |
| | 581 | @param Context Event Context, not used.\r |
| | 582 | \r |
| | 583 | **/\r |
| | 584 | VOID\r |
| | 585 | EFIAPI\r |
| | 586 | SmmIplGuidedEventNotify (\r |
| | 587 | IN EFI_EVENT Event,\r |
| | 588 | IN VOID *Context\r |
| | 589 | )\r |
| | 590 | {\r |
| | 591 | UINTN Size;\r |
| | 592 | \r |
| | 593 | //\r |
| | 594 | // Use Guid to initialize EFI_SMM_COMMUNICATE_HEADER structure \r |
| | 595 | //\r |
| | 596 | CopyGuid (&mCommunicateHeader.HeaderGuid, (EFI_GUID *)Context);\r |
| | 597 | mCommunicateHeader.MessageLength = 1;\r |
| | 598 | mCommunicateHeader.Data[0] = 0;\r |
| | 599 | \r |
| | 600 | //\r |
| | 601 | // Generate the Software SMI and return the result\r |
| | 602 | //\r |
| | 603 | Size = sizeof (mCommunicateHeader);\r |
| | 604 | SmmCommunicationCommunicate (&mSmmCommunication, &mCommunicateHeader, &Size);\r |
| | 605 | }\r |
| | 606 | \r |
| | 607 | /**\r |
| | 608 | Event notification that is fired when EndOfDxe Event Group is signaled.\r |
| | 609 | \r |
| | 610 | @param Event The Event that is being processed, not used.\r |
| | 611 | @param Context Event Context, not used.\r |
| | 612 | \r |
| | 613 | **/\r |
| | 614 | VOID\r |
| | 615 | EFIAPI\r |
| | 616 | SmmIplEndOfDxeEventNotify (\r |
| | 617 | IN EFI_EVENT Event,\r |
| | 618 | IN VOID *Context\r |
| | 619 | )\r |
| | 620 | {\r |
| | 621 | mEndOfDxe = TRUE;\r |
| | 622 | }\r |
| | 623 | \r |
| | 624 | /**\r |
| | 625 | Event notification that is fired when DxeDispatch Event Group is signaled.\r |
| | 626 | \r |
| | 627 | @param Event The Event that is being processed, not used.\r |
| | 628 | @param Context Event Context, not used.\r |
| | 629 | \r |
| | 630 | **/\r |
| | 631 | VOID\r |
| | 632 | EFIAPI\r |
| | 633 | SmmIplDxeDispatchEventNotify (\r |
| | 634 | IN EFI_EVENT Event,\r |
| | 635 | IN VOID *Context\r |
| | 636 | )\r |
| | 637 | {\r |
| | 638 | UINTN Size;\r |
| | 639 | EFI_STATUS Status;\r |
| | 640 | \r |
| | 641 | //\r |
| | 642 | // Keep calling the SMM Core Dispatcher until there is no request to restart it.\r |
| | 643 | //\r |
| | 644 | while (TRUE) {\r |
| | 645 | //\r |
| | 646 | // Use Guid to initialize EFI_SMM_COMMUNICATE_HEADER structure\r |
| | 647 | // Clear the buffer passed into the Software SMI. This buffer will return\r |
| | 648 | // the status of the SMM Core Dispatcher.\r |
| | 649 | //\r |
| | 650 | CopyGuid (&mCommunicateHeader.HeaderGuid, (EFI_GUID *)Context);\r |
| | 651 | mCommunicateHeader.MessageLength = 1;\r |
| | 652 | mCommunicateHeader.Data[0] = 0;\r |
| | 653 | \r |
| | 654 | //\r |
| | 655 | // Generate the Software SMI and return the result\r |
| | 656 | //\r |
| | 657 | Size = sizeof (mCommunicateHeader);\r |
| | 658 | SmmCommunicationCommunicate (&mSmmCommunication, &mCommunicateHeader, &Size);\r |
| | 659 | \r |
| | 660 | //\r |
| | 661 | // Return if there is no request to restart the SMM Core Dispatcher\r |
| | 662 | //\r |
| | 663 | if (mCommunicateHeader.Data[0] != COMM_BUFFER_SMM_DISPATCH_RESTART) {\r |
| | 664 | return;\r |
| | 665 | }\r |
| | 666 | \r |
| | 667 | //\r |
| | 668 | // Attempt to reset SMRAM cacheability to UC\r |
| | 669 | // Assume CPU AP is available at this time\r |
| | 670 | //\r |
| | 671 | Status = gDS->SetMemorySpaceAttributes(\r |
| | 672 | mSmramCacheBase, \r |
| | 673 | mSmramCacheSize,\r |
| | 674 | EFI_MEMORY_UC\r |
| | 675 | );\r |
| | 676 | if (EFI_ERROR (Status)) {\r |
| | 677 | DEBUG ((DEBUG_WARN, "SMM IPL failed to reset SMRAM window to EFI_MEMORY_UC\n"));\r |
| | 678 | } \r |
| | 679 | \r |
| | 680 | //\r |
| | 681 | // Close all SMRAM ranges to protect SMRAM\r |
| | 682 | //\r |
| | 683 | Status = mSmmAccess->Close (mSmmAccess);\r |
| | 684 | ASSERT_EFI_ERROR (Status);\r |
| | 685 | \r |
| | 686 | //\r |
| | 687 | // Print debug message that the SMRAM window is now closed.\r |
| | 688 | //\r |
| | 689 | DEBUG ((DEBUG_INFO, "SMM IPL closed SMRAM window\n"));\r |
| | 690 | }\r |
| | 691 | }\r |
| | 692 | \r |
| | 693 | /**\r |
| | 694 | Event notification that is fired every time a gEfiSmmConfigurationProtocol installs.\r |
| | 695 | \r |
| | 696 | @param Event The Event that is being processed, not used.\r |
| | 697 | @param Context Event Context, not used.\r |
| | 698 | \r |
| | 699 | **/\r |
| | 700 | VOID\r |
| | 701 | EFIAPI\r |
| | 702 | SmmIplSmmConfigurationEventNotify (\r |
| | 703 | IN EFI_EVENT Event,\r |
| | 704 | IN VOID *Context\r |
| | 705 | )\r |
| | 706 | {\r |
| | 707 | EFI_STATUS Status;\r |
| | 708 | EFI_SMM_CONFIGURATION_PROTOCOL *SmmConfiguration;\r |
| | 709 | \r |
| | 710 | //\r |
| | 711 | // Make sure this notification is for this handler\r |
| | 712 | //\r |
| | 713 | Status = gBS->LocateProtocol (Context, NULL, (VOID **)&SmmConfiguration);\r |
| | 714 | if (EFI_ERROR (Status)) {\r |
| | 715 | return;\r |
| | 716 | }\r |
| | 717 | \r |
| | 718 | //\r |
| | 719 | // Register the SMM Entry Point provided by the SMM Core with the SMM COnfiguration protocol\r |
| | 720 | //\r |
| | 721 | Status = SmmConfiguration->RegisterSmmEntry (SmmConfiguration, gSmmCorePrivate->SmmEntryPoint);\r |
| | 722 | ASSERT_EFI_ERROR (Status);\r |
| | 723 | \r |
| | 724 | //\r |
| | 725 | // Set flag to indicate that the SMM Entry Point has been registered which \r |
| | 726 | // means that SMIs are now fully operational.\r |
| | 727 | //\r |
| | 728 | gSmmCorePrivate->SmmEntryPointRegistered = TRUE;\r |
| | 729 | \r |
| | 730 | //\r |
| | 731 | // Print debug message showing SMM Core entry point address.\r |
| | 732 | //\r |
| | 733 | DEBUG ((DEBUG_INFO, "SMM IPL registered SMM Entry Point address %p\n", (VOID *)(UINTN)gSmmCorePrivate->SmmEntryPoint));\r |
| | 734 | }\r |
| | 735 | \r |
| | 736 | /**\r |
| | 737 | Event notification that is fired every time a DxeSmmReadyToLock protocol is added\r |
| | 738 | or if gEfiEventReadyToBootGuid is signaled.\r |
| | 739 | \r |
| | 740 | @param Event The Event that is being processed, not used.\r |
| | 741 | @param Context Event Context, not used.\r |
| | 742 | \r |
| | 743 | **/\r |
| | 744 | VOID\r |
| | 745 | EFIAPI\r |
| | 746 | SmmIplReadyToLockEventNotify (\r |
| | 747 | IN EFI_EVENT Event,\r |
| | 748 | IN VOID *Context\r |
| | 749 | )\r |
| | 750 | {\r |
| | 751 | EFI_STATUS Status;\r |
| | 752 | VOID *Interface;\r |
| | 753 | UINTN Index;\r |
| | 754 | \r |
| | 755 | //\r |
| | 756 | // See if we are already locked\r |
| | 757 | //\r |
| | 758 | if (mSmmLocked) {\r |
| | 759 | return;\r |
| | 760 | }\r |
| | 761 | \r |
| | 762 | //\r |
| | 763 | // Make sure this notification is for this handler\r |
| | 764 | //\r |
| | 765 | if (CompareGuid ((EFI_GUID *)Context, &gEfiDxeSmmReadyToLockProtocolGuid)) {\r |
| | 766 | Status = gBS->LocateProtocol (&gEfiDxeSmmReadyToLockProtocolGuid, NULL, &Interface);\r |
| | 767 | if (EFI_ERROR (Status)) {\r |
| | 768 | return;\r |
| | 769 | }\r |
| | 770 | } else {\r |
| | 771 | //\r |
| | 772 | // If SMM is not locked yet and we got here from gEfiEventReadyToBootGuid being \r |
| | 773 | // signaled, then gEfiDxeSmmReadyToLockProtocolGuid was not installed as expected.\r |
| | 774 | // Print a warning on debug builds.\r |
| | 775 | //\r |
| | 776 | DEBUG ((DEBUG_WARN, "SMM IPL! DXE SMM Ready To Lock Protocol not installed before Ready To Boot signal\n"));\r |
| | 777 | }\r |
| | 778 | \r |
| | 779 | if (!mEndOfDxe) {\r |
| | 780 | DEBUG ((DEBUG_ERROR, "EndOfDxe Event must be signaled before DxeSmmReadyToLock Protocol installation!\n"));\r |
| | 781 | REPORT_STATUS_CODE (\r |
| | 782 | EFI_ERROR_CODE | EFI_ERROR_UNRECOVERED,\r |
| | 783 | (EFI_SOFTWARE_SMM_DRIVER | EFI_SW_EC_ILLEGAL_SOFTWARE_STATE)\r |
| | 784 | );\r |
| | 785 | ASSERT (FALSE);\r |
| | 786 | }\r |
| | 787 | \r |
| | 788 | //\r |
| | 789 | // Lock the SMRAM (Note: Locking SMRAM may not be supported on all platforms)\r |
| | 790 | //\r |
| | 791 | mSmmAccess->Lock (mSmmAccess);\r |
| | 792 | \r |
| | 793 | //\r |
| | 794 | // Close protocol and event notification events that do not apply after the \r |
| | 795 | // DXE SMM Ready To Lock Protocol has been installed or the Ready To Boot \r |
| | 796 | // event has been signalled.\r |
| | 797 | //\r |
| | 798 | for (Index = 0; mSmmIplEvents[Index].NotifyFunction != NULL; Index++) {\r |
| | 799 | if (mSmmIplEvents[Index].CloseOnLock) {\r |
| | 800 | gBS->CloseEvent (mSmmIplEvents[Index].Event);\r |
| | 801 | }\r |
| | 802 | }\r |
| | 803 | \r |
| | 804 | //\r |
| | 805 | // Inform SMM Core that the DxeSmmReadyToLock protocol was installed\r |
| | 806 | //\r |
| | 807 | SmmIplGuidedEventNotify (Event, (VOID *)&gEfiDxeSmmReadyToLockProtocolGuid);\r |
| | 808 | \r |
| | 809 | //\r |
| | 810 | // Print debug message that the SMRAM window is now locked.\r |
| | 811 | //\r |
| | 812 | DEBUG ((DEBUG_INFO, "SMM IPL locked SMRAM window\n"));\r |
| | 813 | \r |
| | 814 | //\r |
| | 815 | // Set flag so this operation will not be performed again\r |
| | 816 | //\r |
| | 817 | mSmmLocked = TRUE;\r |
| | 818 | }\r |
| | 819 | \r |
| | 820 | /**\r |
| | 821 | Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE.\r |
| | 822 | \r |
| | 823 | This is a notification function registered on EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r |
| | 824 | It convers pointer to new virtual address.\r |
| | 825 | \r |
| | 826 | @param Event Event whose notification function is being invoked.\r |
| | 827 | @param Context Pointer to the notification function's context.\r |
| | 828 | \r |
| | 829 | **/\r |
| | 830 | VOID\r |
| | 831 | EFIAPI\r |
| | 832 | SmmIplSetVirtualAddressNotify (\r |
| | 833 | IN EFI_EVENT Event,\r |
| | 834 | IN VOID *Context\r |
| | 835 | )\r |
| | 836 | {\r |
| | 837 | EfiConvertPointer (0x0, (VOID **)&mSmmControl2);\r |
| | 838 | }\r |
| | 839 | \r |
| | 840 | /**\r |
| | 841 | Get the fixed loading address from image header assigned by build tool. This function only be called\r |
| | 842 | when Loading module at Fixed address feature enabled.\r |
| | 843 | \r |
| | 844 | @param ImageContext Pointer to the image context structure that describes the PE/COFF\r |
| | 845 | image that needs to be examined by this function.\r |
| | 846 | @retval EFI_SUCCESS An fixed loading address is assigned to this image by build tools .\r |
| | 847 | @retval EFI_NOT_FOUND The image has no assigned fixed loading address.\r |
| | 848 | **/\r |
| | 849 | EFI_STATUS\r |
| | 850 | GetPeCoffImageFixLoadingAssignedAddress(\r |
| | 851 | IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext\r |
| | 852 | )\r |
| | 853 | {\r |
| | 854 | UINTN SectionHeaderOffset;\r |
| | 855 | EFI_STATUS Status;\r |
| | 856 | EFI_IMAGE_SECTION_HEADER SectionHeader;\r |
| | 857 | EFI_IMAGE_OPTIONAL_HEADER_UNION *ImgHdr;\r |
| | 858 | EFI_PHYSICAL_ADDRESS FixLoadingAddress;\r |
| | 859 | UINT16 Index;\r |
| | 860 | UINTN Size;\r |
| | 861 | UINT16 NumberOfSections;\r |
| | 862 | EFI_PHYSICAL_ADDRESS SmramBase;\r |
| | 863 | UINT64 SmmCodeSize;\r |
| | 864 | UINT64 ValueInSectionHeader;\r |
| | 865 | //\r |
| | 866 | // Build tool will calculate the smm code size and then patch the PcdLoadFixAddressSmmCodePageNumber\r |
| | 867 | //\r |
| | 868 | SmmCodeSize = EFI_PAGES_TO_SIZE (PcdGet32(PcdLoadFixAddressSmmCodePageNumber));\r |
| | 869 | \r |
| | 870 | FixLoadingAddress = 0;\r |
| | 871 | Status = EFI_NOT_FOUND;\r |
| | 872 | SmramBase = mLMFAConfigurationTable->SmramBase;\r |
| | 873 | //\r |
| | 874 | // Get PeHeader pointer\r |
| | 875 | //\r |
| | 876 | ImgHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)((CHAR8* )ImageContext->Handle + ImageContext->PeCoffHeaderOffset);\r |
| | 877 | SectionHeaderOffset = ImageContext->PeCoffHeaderOffset +\r |
| | 878 | sizeof (UINT32) +\r |
| | 879 | sizeof (EFI_IMAGE_FILE_HEADER) +\r |
| | 880 | ImgHdr->Pe32.FileHeader.SizeOfOptionalHeader;\r |
| | 881 | NumberOfSections = ImgHdr->Pe32.FileHeader.NumberOfSections;\r |
| | 882 | \r |
| | 883 | //\r |
| | 884 | // Get base address from the first section header that doesn't point to code section.\r |
| | 885 | //\r |
| | 886 | for (Index = 0; Index < NumberOfSections; Index++) {\r |
| | 887 | //\r |
| | 888 | // Read section header from file\r |
| | 889 | //\r |
| | 890 | Size = sizeof (EFI_IMAGE_SECTION_HEADER);\r |
| | 891 | Status = ImageContext->ImageRead (\r |
| | 892 | ImageContext->Handle,\r |
| | 893 | SectionHeaderOffset,\r |
| | 894 | &Size,\r |
| | 895 | &SectionHeader\r |
| | 896 | );\r |
| | 897 | if (EFI_ERROR (Status)) {\r |
| | 898 | return Status;\r |
| | 899 | }\r |
| | 900 | \r |
| | 901 | Status = EFI_NOT_FOUND;\r |
| | 902 | \r |
| | 903 | if ((SectionHeader.Characteristics & EFI_IMAGE_SCN_CNT_CODE) == 0) {\r |
| | 904 | //\r |
| | 905 | // Build tool saves the offset to SMRAM base as image base in PointerToRelocations & PointerToLineNumbers fields in the\r |
| | 906 | // first section header that doesn't point to code section in image header. And there is an assumption that when the\r |
| | 907 | // feature is enabled, if a module is assigned a loading address by tools, PointerToRelocations & PointerToLineNumbers\r |
| | 908 | // fields should NOT be Zero, or else, these 2 fields should be set to Zero\r |
| | 909 | //\r |
| | 910 | ValueInSectionHeader = ReadUnaligned64((UINT64*)&SectionHeader.PointerToRelocations);\r |
| | 911 | if (ValueInSectionHeader != 0) {\r |
| | 912 | //\r |
| | 913 | // Found first section header that doesn't point to code section in which build tool saves the\r |
| | 914 | // offset to SMRAM base as image base in PointerToRelocations & PointerToLineNumbers fields\r |
| | 915 | //\r |
| | 916 | FixLoadingAddress = (EFI_PHYSICAL_ADDRESS)(SmramBase + (INT64)ValueInSectionHeader);\r |
| | 917 | \r |
| | 918 | if (SmramBase + SmmCodeSize > FixLoadingAddress && SmramBase <= FixLoadingAddress) {\r |
| | 919 | //\r |
| | 920 | // The assigned address is valid. Return the specified loading address\r |
| | 921 | //\r |
| | 922 | ImageContext->ImageAddress = FixLoadingAddress;\r |
| | 923 | Status = EFI_SUCCESS;\r |
| | 924 | }\r |
| | 925 | }\r |
| | 926 | break;\r |
| | 927 | }\r |
| | 928 | SectionHeaderOffset += sizeof (EFI_IMAGE_SECTION_HEADER);\r |
| | 929 | }\r |
| | 930 | DEBUG ((EFI_D_INFO|EFI_D_LOAD, "LOADING MODULE FIXED INFO: Loading module at fixed address %x, Status = %r \n", FixLoadingAddress, Status));\r |
| | 931 | return Status;\r |
| | 932 | }\r |
| | 933 | /**\r |
| | 934 | Load the SMM Core image into SMRAM and executes the SMM Core from SMRAM.\r |
| | 935 | \r |
| | 936 | @param[in, out] SmramRange Descriptor for the range of SMRAM to reload the \r |
| | 937 | currently executing image, the rang of SMRAM to\r |
| | 938 | hold SMM Core will be excluded.\r |
| | 939 | @param[in, out] SmramRangeSmmCore Descriptor for the range of SMRAM to hold SMM Core.\r |
| | 940 | \r |
| | 941 | @param[in] Context Context to pass into SMM Core\r |
| | 942 | \r |
| | 943 | @return EFI_STATUS\r |
| | 944 | \r |
| | 945 | **/\r |
| | 946 | EFI_STATUS\r |
| | 947 | ExecuteSmmCoreFromSmram (\r |
| | 948 | IN OUT EFI_SMRAM_DESCRIPTOR *SmramRange,\r |
| | 949 | IN OUT EFI_SMRAM_DESCRIPTOR *SmramRangeSmmCore,\r |
| | 950 | IN VOID *Context\r |
| | 951 | )\r |
| | 952 | {\r |
| | 953 | EFI_STATUS Status;\r |
| | 954 | VOID *SourceBuffer;\r |
| | 955 | UINTN SourceSize;\r |
| | 956 | PE_COFF_LOADER_IMAGE_CONTEXT ImageContext;\r |
| | 957 | UINTN PageCount;\r |
| | 958 | EFI_IMAGE_ENTRY_POINT EntryPoint;\r |
| | 959 | \r |
| | 960 | //\r |
| | 961 | // Search all Firmware Volumes for a PE/COFF image in a file of type SMM_CORE\r |
| | 962 | // \r |
| | 963 | Status = GetSectionFromAnyFvByFileType (\r |
| | 964 | EFI_FV_FILETYPE_SMM_CORE, \r |
| | 965 | 0,\r |
| | 966 | EFI_SECTION_PE32, \r |
| | 967 | 0,\r |
| | 968 | &SourceBuffer, \r |
| | 969 | &SourceSize\r |
| | 970 | );\r |
| | 971 | if (EFI_ERROR (Status)) {\r |
| | 972 | return Status;\r |
| | 973 | }\r |
| | 974 | \r |
| | 975 | //\r |
| | 976 | // Initilize ImageContext\r |
| | 977 | //\r |
| | 978 | ImageContext.Handle = SourceBuffer;\r |
| | 979 | ImageContext.ImageRead = PeCoffLoaderImageReadFromMemory;\r |
| | 980 | \r |
| | 981 | //\r |
| | 982 | // Get information about the image being loaded\r |
| | 983 | //\r |
| | 984 | Status = PeCoffLoaderGetImageInfo (&ImageContext);\r |
| | 985 | if (EFI_ERROR (Status)) {\r |
| | 986 | return Status;\r |
| | 987 | }\r |
| | 988 | //\r |
| | 989 | // if Loading module at Fixed Address feature is enabled, the SMM core driver will be loaded to \r |
| | 990 | // the address assigned by build tool.\r |
| | 991 | //\r |
| | 992 | if (PcdGet64(PcdLoadModuleAtFixAddressEnable) != 0) {\r |
| | 993 | //\r |
| | 994 | // Get the fixed loading address assigned by Build tool\r |
| | 995 | //\r |
| | 996 | Status = GetPeCoffImageFixLoadingAssignedAddress (&ImageContext);\r |
| | 997 | if (!EFI_ERROR (Status)) {\r |
| | 998 | //\r |
| | 999 | // Since the memory range to load SMM CORE will be cut out in SMM core, so no need to allocate and free this range\r |
| | 1000 | //\r |
| | 1001 | PageCount = 0;\r |
| | 1002 | //\r |
| | 1003 | // Reserved Smram Region for SmmCore is not used, and remove it from SmramRangeCount.\r |
| | 1004 | //\r |
| | 1005 | gSmmCorePrivate->SmramRangeCount --;\r |
| | 1006 | } else {\r |
| | 1007 | DEBUG ((EFI_D_INFO, "LOADING MODULE FIXED ERROR: Loading module at fixed address at address failed\n"));\r |
| | 1008 | //\r |
| | 1009 | // Allocate memory for the image being loaded from the EFI_SRAM_DESCRIPTOR \r |
| | 1010 | // specified by SmramRange\r |
| | 1011 | //\r |
| | 1012 | PageCount = (UINTN)EFI_SIZE_TO_PAGES((UINTN)ImageContext.ImageSize + ImageContext.SectionAlignment);\r |
| | 1013 | \r |
| | 1014 | ASSERT ((SmramRange->PhysicalSize & EFI_PAGE_MASK) == 0);\r |
| | 1015 | ASSERT (SmramRange->PhysicalSize > EFI_PAGES_TO_SIZE (PageCount));\r |
| | 1016 | \r |
| | 1017 | SmramRange->PhysicalSize -= EFI_PAGES_TO_SIZE (PageCount);\r |
| | 1018 | SmramRangeSmmCore->CpuStart = SmramRange->CpuStart + SmramRange->PhysicalSize;\r |
| | 1019 | SmramRangeSmmCore->PhysicalStart = SmramRange->PhysicalStart + SmramRange->PhysicalSize;\r |
| | 1020 | SmramRangeSmmCore->RegionState = SmramRange->RegionState | EFI_ALLOCATED;\r |
| | 1021 | SmramRangeSmmCore->PhysicalSize = EFI_PAGES_TO_SIZE (PageCount);\r |
| | 1022 | \r |
| | 1023 | //\r |
| | 1024 | // Align buffer on section boundary\r |
| | 1025 | //\r |
| | 1026 | ImageContext.ImageAddress = SmramRangeSmmCore->CpuStart;\r |
| | 1027 | }\r |
| | 1028 | } else {\r |
| | 1029 | //\r |
| | 1030 | // Allocate memory for the image being loaded from the EFI_SRAM_DESCRIPTOR \r |
| | 1031 | // specified by SmramRange\r |
| | 1032 | //\r |
| | 1033 | PageCount = (UINTN)EFI_SIZE_TO_PAGES((UINTN)ImageContext.ImageSize + ImageContext.SectionAlignment);\r |
| | 1034 | \r |
| | 1035 | ASSERT ((SmramRange->PhysicalSize & EFI_PAGE_MASK) == 0);\r |
| | 1036 | ASSERT (SmramRange->PhysicalSize > EFI_PAGES_TO_SIZE (PageCount));\r |
| | 1037 | \r |
| | 1038 | SmramRange->PhysicalSize -= EFI_PAGES_TO_SIZE (PageCount);\r |
| | 1039 | SmramRangeSmmCore->CpuStart = SmramRange->CpuStart + SmramRange->PhysicalSize;\r |
| | 1040 | SmramRangeSmmCore->PhysicalStart = SmramRange->PhysicalStart + SmramRange->PhysicalSize;\r |
| | 1041 | SmramRangeSmmCore->RegionState = SmramRange->RegionState | EFI_ALLOCATED;\r |
| | 1042 | SmramRangeSmmCore->PhysicalSize = EFI_PAGES_TO_SIZE (PageCount);\r |
| | 1043 | \r |
| | 1044 | //\r |
| | 1045 | // Align buffer on section boundary\r |
| | 1046 | //\r |
| | 1047 | ImageContext.ImageAddress = SmramRangeSmmCore->CpuStart;\r |
| | 1048 | }\r |
| | 1049 | \r |
| | 1050 | ImageContext.ImageAddress += ImageContext.SectionAlignment - 1;\r |
| | 1051 | ImageContext.ImageAddress &= ~((EFI_PHYSICAL_ADDRESS)ImageContext.SectionAlignment - 1);\r |
| | 1052 | \r |
| | 1053 | //\r |
| | 1054 | // Print debug message showing SMM Core load address.\r |
| | 1055 | //\r |
| | 1056 | DEBUG ((DEBUG_INFO, "SMM IPL loading SMM Core at SMRAM address %p\n", (VOID *)(UINTN)ImageContext.ImageAddress));\r |
| | 1057 | \r |
| | 1058 | //\r |
| | 1059 | // Load the image to our new buffer\r |
| | 1060 | //\r |
| | 1061 | Status = PeCoffLoaderLoadImage (&ImageContext);\r |
| | 1062 | if (!EFI_ERROR (Status)) {\r |
| | 1063 | //\r |
| | 1064 | // Relocate the image in our new buffer\r |
| | 1065 | //\r |
| | 1066 | Status = PeCoffLoaderRelocateImage (&ImageContext);\r |
| | 1067 | if (!EFI_ERROR (Status)) {\r |
| | 1068 | //\r |
| | 1069 | // Flush the instruction cache so the image data are written before we execute it\r |
| | 1070 | //\r |
| | 1071 | InvalidateInstructionCacheRange ((VOID *)(UINTN)ImageContext.ImageAddress, (UINTN)ImageContext.ImageSize);\r |
| | 1072 | \r |
| | 1073 | //\r |
| | 1074 | // Print debug message showing SMM Core entry point address.\r |
| | 1075 | //\r |
| | 1076 | DEBUG ((DEBUG_INFO, "SMM IPL calling SMM Core at SMRAM address %p\n", (VOID *)(UINTN)ImageContext.EntryPoint));\r |
| | 1077 | \r |
| | 1078 | gSmmCorePrivate->PiSmmCoreImageBase = ImageContext.ImageAddress;\r |
| | 1079 | gSmmCorePrivate->PiSmmCoreImageSize = ImageContext.ImageSize;\r |
| | 1080 | DEBUG ((DEBUG_INFO, "PiSmmCoreImageBase - 0x%016lx\n", gSmmCorePrivate->PiSmmCoreImageBase));\r |
| | 1081 | DEBUG ((DEBUG_INFO, "PiSmmCoreImageSize - 0x%016lx\n", gSmmCorePrivate->PiSmmCoreImageSize));\r |
| | 1082 | \r |
| | 1083 | gSmmCorePrivate->PiSmmCoreEntryPoint = ImageContext.EntryPoint;\r |
| | 1084 | \r |
| | 1085 | //\r |
| | 1086 | // Execute image\r |
| | 1087 | //\r |
| | 1088 | EntryPoint = (EFI_IMAGE_ENTRY_POINT)(UINTN)ImageContext.EntryPoint;\r |
| | 1089 | Status = EntryPoint ((EFI_HANDLE)Context, gST);\r |
| | 1090 | }\r |
| | 1091 | }\r |
| | 1092 | \r |
| | 1093 | //\r |
| | 1094 | // Always free memory allocted by GetFileBufferByFilePath ()\r |
| | 1095 | //\r |
| | 1096 | FreePool (SourceBuffer);\r |
| | 1097 | \r |
| | 1098 | return Status;\r |
| | 1099 | }\r |
| | 1100 | \r |
| | 1101 | /**\r |
| | 1102 | SMM split SMRAM entry.\r |
| | 1103 | \r |
| | 1104 | @param[in, out] RangeToCompare Pointer to EFI_SMRAM_DESCRIPTOR to compare.\r |
| | 1105 | @param[in, out] ReservedRangeToCompare Pointer to EFI_SMM_RESERVED_SMRAM_REGION to compare.\r |
| | 1106 | @param[out] Ranges Output pointer to hold split EFI_SMRAM_DESCRIPTOR entry.\r |
| | 1107 | @param[in, out] RangeCount Pointer to range count.\r |
| | 1108 | @param[out] ReservedRanges Output pointer to hold split EFI_SMM_RESERVED_SMRAM_REGION entry.\r |
| | 1109 | @param[in, out] ReservedRangeCount Pointer to reserved range count.\r |
| | 1110 | @param[out] FinalRanges Output pointer to hold split final EFI_SMRAM_DESCRIPTOR entry\r |
| | 1111 | that no need to be split anymore.\r |
| | 1112 | @param[in, out] FinalRangeCount Pointer to final range count.\r |
| | 1113 | \r |
| | 1114 | **/\r |
| | 1115 | VOID\r |
| | 1116 | SmmSplitSmramEntry (\r |
| | 1117 | IN OUT EFI_SMRAM_DESCRIPTOR *RangeToCompare,\r |
| | 1118 | IN OUT EFI_SMM_RESERVED_SMRAM_REGION *ReservedRangeToCompare,\r |
| | 1119 | OUT EFI_SMRAM_DESCRIPTOR *Ranges,\r |
| | 1120 | IN OUT UINTN *RangeCount,\r |
| | 1121 | OUT EFI_SMM_RESERVED_SMRAM_REGION *ReservedRanges,\r |
| | 1122 | IN OUT UINTN *ReservedRangeCount,\r |
| | 1123 | OUT EFI_SMRAM_DESCRIPTOR *FinalRanges,\r |
| | 1124 | IN OUT UINTN *FinalRangeCount\r |
| | 1125 | )\r |
| | 1126 | {\r |
| | 1127 | UINT64 RangeToCompareEnd;\r |
| | 1128 | UINT64 ReservedRangeToCompareEnd;\r |
| | 1129 | \r |
| | 1130 | RangeToCompareEnd = RangeToCompare->CpuStart + RangeToCompare->PhysicalSize;\r |
| | 1131 | ReservedRangeToCompareEnd = ReservedRangeToCompare->SmramReservedStart + ReservedRangeToCompare->SmramReservedSize;\r |
| | 1132 | \r |
| | 1133 | if ((RangeToCompare->CpuStart >= ReservedRangeToCompare->SmramReservedStart) &&\r |
| | 1134 | (RangeToCompare->CpuStart < ReservedRangeToCompareEnd)) {\r |
| | 1135 | if (RangeToCompareEnd < ReservedRangeToCompareEnd) {\r |
| | 1136 | //\r |
| | 1137 | // RangeToCompare ReservedRangeToCompare\r |
| | 1138 | // ---- ---- --------------------------------------\r |
| | 1139 | // | | | | -> 1. ReservedRangeToCompare\r |
| | 1140 | // ---- | | |--| --------------------------------------\r |
| | 1141 | // | | | | | |\r |
| | 1142 | // | | | | | | -> 2. FinalRanges[*FinalRangeCount] and increment *FinalRangeCount\r |
| | 1143 | // | | | | | | RangeToCompare->PhysicalSize = 0\r |
| | 1144 | // ---- | | |--| --------------------------------------\r |
| | 1145 | // | | | | -> 3. ReservedRanges[*ReservedRangeCount] and increment *ReservedRangeCount\r |
| | 1146 | // ---- ---- --------------------------------------\r |
| | 1147 | //\r |
| | 1148 | \r |
| | 1149 | //\r |
| | 1150 | // 1. Update ReservedRangeToCompare.\r |
| | 1151 | //\r |
| | 1152 | ReservedRangeToCompare->SmramReservedSize = RangeToCompare->CpuStart - ReservedRangeToCompare->SmramReservedStart;\r |
| | 1153 | //\r |
| | 1154 | // 2. Update FinalRanges[FinalRangeCount] and increment *FinalRangeCount.\r |
| | 1155 | // Zero RangeToCompare->PhysicalSize.\r |
| | 1156 | //\r |
| | 1157 | FinalRanges[*FinalRangeCount].CpuStart = RangeToCompare->CpuStart;\r |
| | 1158 | FinalRanges[*FinalRangeCount].PhysicalStart = RangeToCompare->PhysicalStart;\r |
| | 1159 | FinalRanges[*FinalRangeCount].RegionState = RangeToCompare->RegionState | EFI_ALLOCATED;\r |
| | 1160 | FinalRanges[*FinalRangeCount].PhysicalSize = RangeToCompare->PhysicalSize;\r |
| | 1161 | *FinalRangeCount += 1;\r |
| | 1162 | RangeToCompare->PhysicalSize = 0;\r |
| | 1163 | //\r |
| | 1164 | // 3. Update ReservedRanges[*ReservedRangeCount] and increment *ReservedRangeCount.\r |
| | 1165 | //\r |
| | 1166 | ReservedRanges[*ReservedRangeCount].SmramReservedStart = FinalRanges[*FinalRangeCount - 1].CpuStart + FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r |
| | 1167 | ReservedRanges[*ReservedRangeCount].SmramReservedSize = ReservedRangeToCompareEnd - RangeToCompareEnd;\r |
| | 1168 | *ReservedRangeCount += 1;\r |
| | 1169 | } else {\r |
| | 1170 | //\r |
| | 1171 | // RangeToCompare ReservedRangeToCompare\r |
| | 1172 | // ---- ---- --------------------------------------\r |
| | 1173 | // | | | | -> 1. ReservedRangeToCompare\r |
| | 1174 | // ---- | | |--| --------------------------------------\r |
| | 1175 | // | | | | | |\r |
| | 1176 | // | | | | | | -> 2. FinalRanges[*FinalRangeCount] and increment *FinalRangeCount\r |
| | 1177 | // | | | | | |\r |
| | 1178 | // | | ---- |--| --------------------------------------\r |
| | 1179 | // | | | | -> 3. RangeToCompare\r |
| | 1180 | // ---- ---- --------------------------------------\r |
| | 1181 | //\r |
| | 1182 | \r |
| | 1183 | //\r |
| | 1184 | // 1. Update ReservedRangeToCompare.\r |
| | 1185 | //\r |
| | 1186 | ReservedRangeToCompare->SmramReservedSize = RangeToCompare->CpuStart - ReservedRangeToCompare->SmramReservedStart;\r |
| | 1187 | //\r |
| | 1188 | // 2. Update FinalRanges[FinalRangeCount] and increment *FinalRangeCount.\r |
| | 1189 | //\r |
| | 1190 | FinalRanges[*FinalRangeCount].CpuStart = RangeToCompare->CpuStart;\r |
| | 1191 | FinalRanges[*FinalRangeCount].PhysicalStart = RangeToCompare->PhysicalStart;\r |
| | 1192 | FinalRanges[*FinalRangeCount].RegionState = RangeToCompare->RegionState | EFI_ALLOCATED;\r |
| | 1193 | FinalRanges[*FinalRangeCount].PhysicalSize = ReservedRangeToCompareEnd - RangeToCompare->CpuStart;\r |
| | 1194 | *FinalRangeCount += 1;\r |
| | 1195 | //\r |
| | 1196 | // 3. Update RangeToCompare.\r |
| | 1197 | //\r |
| | 1198 | RangeToCompare->CpuStart += FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r |
| | 1199 | RangeToCompare->PhysicalStart += FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r |
| | 1200 | RangeToCompare->PhysicalSize -= FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r |
| | 1201 | }\r |
| | 1202 | } else if ((ReservedRangeToCompare->SmramReservedStart >= RangeToCompare->CpuStart) &&\r |
| | 1203 | (ReservedRangeToCompare->SmramReservedStart < RangeToCompareEnd)) {\r |
| | 1204 | if (ReservedRangeToCompareEnd < RangeToCompareEnd) {\r |
| | 1205 | //\r |
| | 1206 | // RangeToCompare ReservedRangeToCompare\r |
| | 1207 | // ---- ---- --------------------------------------\r |
| | 1208 | // | | | | -> 1. RangeToCompare\r |
| | 1209 | // | | ---- |--| --------------------------------------\r |
| | 1210 | // | | | | | |\r |
| | 1211 | // | | | | | | -> 2. FinalRanges[*FinalRangeCount] and increment *FinalRangeCount\r |
| | 1212 | // | | | | | | ReservedRangeToCompare->SmramReservedSize = 0\r |
| | 1213 | // | | ---- |--| --------------------------------------\r |
| | 1214 | // | | | | -> 3. Ranges[*RangeCount] and increment *RangeCount\r |
| | 1215 | // ---- ---- --------------------------------------\r |
| | 1216 | //\r |
| | 1217 | \r |
| | 1218 | //\r |
| | 1219 | // 1. Update RangeToCompare.\r |
| | 1220 | //\r |
| | 1221 | RangeToCompare->PhysicalSize = ReservedRangeToCompare->SmramReservedStart - RangeToCompare->CpuStart;\r |
| | 1222 | //\r |
| | 1223 | // 2. Update FinalRanges[FinalRangeCount] and increment *FinalRangeCount.\r |
| | 1224 | // ReservedRangeToCompare->SmramReservedSize = 0\r |
| | 1225 | //\r |
| | 1226 | FinalRanges[*FinalRangeCount].CpuStart = ReservedRangeToCompare->SmramReservedStart;\r |
| | 1227 | FinalRanges[*FinalRangeCount].PhysicalStart = RangeToCompare->PhysicalStart + RangeToCompare->PhysicalSize;\r |
| | 1228 | FinalRanges[*FinalRangeCount].RegionState = RangeToCompare->RegionState | EFI_ALLOCATED;\r |
| | 1229 | FinalRanges[*FinalRangeCount].PhysicalSize = ReservedRangeToCompare->SmramReservedSize;\r |
| | 1230 | *FinalRangeCount += 1;\r |
| | 1231 | ReservedRangeToCompare->SmramReservedSize = 0;\r |
| | 1232 | //\r |
| | 1233 | // 3. Update Ranges[*RangeCount] and increment *RangeCount.\r |
| | 1234 | //\r |
| | 1235 | Ranges[*RangeCount].CpuStart = FinalRanges[*FinalRangeCount - 1].CpuStart + FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r |
| | 1236 | Ranges[*RangeCount].PhysicalStart = FinalRanges[*FinalRangeCount - 1].PhysicalStart + FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r |
| | 1237 | Ranges[*RangeCount].RegionState = RangeToCompare->RegionState;\r |
| | 1238 | Ranges[*RangeCount].PhysicalSize = RangeToCompareEnd - ReservedRangeToCompareEnd;\r |
| | 1239 | *RangeCount += 1;\r |
| | 1240 | } else {\r |
| | 1241 | //\r |
| | 1242 | // RangeToCompare ReservedRangeToCompare\r |
| | 1243 | // ---- ---- --------------------------------------\r |
| | 1244 | // | | | | -> 1. RangeToCompare\r |
| | 1245 | // | | ---- |--| --------------------------------------\r |
| | 1246 | // | | | | | |\r |
| | 1247 | // | | | | | | -> 2. FinalRanges[*FinalRangeCount] and increment *FinalRangeCount\r |
| | 1248 | // | | | | | |\r |
| | 1249 | // ---- | | |--| --------------------------------------\r |
| | 1250 | // | | | | -> 3. ReservedRangeToCompare\r |
| | 1251 | // ---- ---- --------------------------------------\r |
| | 1252 | //\r |
| | 1253 | \r |
| | 1254 | //\r |
| | 1255 | // 1. Update RangeToCompare.\r |
| | 1256 | //\r |
| | 1257 | RangeToCompare->PhysicalSize = ReservedRangeToCompare->SmramReservedStart - RangeToCompare->CpuStart;\r |
| | 1258 | //\r |
| | 1259 | // 2. Update FinalRanges[FinalRangeCount] and increment *FinalRangeCount.\r |
| | 1260 | // ReservedRangeToCompare->SmramReservedSize = 0\r |
| | 1261 | //\r |
| | 1262 | FinalRanges[*FinalRangeCount].CpuStart = ReservedRangeToCompare->SmramReservedStart;\r |
| | 1263 | FinalRanges[*FinalRangeCount].PhysicalStart = RangeToCompare->PhysicalStart + RangeToCompare->PhysicalSize;\r |
| | 1264 | FinalRanges[*FinalRangeCount].RegionState = RangeToCompare->RegionState | EFI_ALLOCATED;\r |
| | 1265 | FinalRanges[*FinalRangeCount].PhysicalSize = RangeToCompareEnd - ReservedRangeToCompare->SmramReservedStart;\r |
| | 1266 | *FinalRangeCount += 1;\r |
| | 1267 | //\r |
| | 1268 | // 3. Update ReservedRangeToCompare.\r |
| | 1269 | //\r |
| | 1270 | ReservedRangeToCompare->SmramReservedStart += FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r |
| | 1271 | ReservedRangeToCompare->SmramReservedSize -= FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r |
| | 1272 | }\r |
| | 1273 | }\r |
| | 1274 | }\r |
| | 1275 | \r |
| | 1276 | /**\r |
| | 1277 | Returns if SMRAM range and SMRAM reserved range are overlapped.\r |
| | 1278 | \r |
| | 1279 | @param[in] RangeToCompare Pointer to EFI_SMRAM_DESCRIPTOR to compare.\r |
| | 1280 | @param[in] ReservedRangeToCompare Pointer to EFI_SMM_RESERVED_SMRAM_REGION to compare.\r |
| | 1281 | \r |
| | 1282 | @retval TRUE There is overlap.\r |
| | 1283 | @retval FALSE There is no overlap.\r |
| | 1284 | \r |
| | 1285 | **/\r |
| | 1286 | BOOLEAN\r |
| | 1287 | SmmIsSmramOverlap (\r |
| | 1288 | IN EFI_SMRAM_DESCRIPTOR *RangeToCompare,\r |
| | 1289 | IN EFI_SMM_RESERVED_SMRAM_REGION *ReservedRangeToCompare\r |
| | 1290 | )\r |
| | 1291 | {\r |
| | 1292 | UINT64 RangeToCompareEnd;\r |
| | 1293 | UINT64 ReservedRangeToCompareEnd;\r |
| | 1294 | \r |
| | 1295 | RangeToCompareEnd = RangeToCompare->CpuStart + RangeToCompare->PhysicalSize;\r |
| | 1296 | ReservedRangeToCompareEnd = ReservedRangeToCompare->SmramReservedStart + ReservedRangeToCompare->SmramReservedSize;\r |
| | 1297 | \r |
| | 1298 | if ((RangeToCompare->CpuStart >= ReservedRangeToCompare->SmramReservedStart) &&\r |
| | 1299 | (RangeToCompare->CpuStart < ReservedRangeToCompareEnd)) {\r |
| | 1300 | return TRUE;\r |
| | 1301 | } else if ((ReservedRangeToCompare->SmramReservedStart >= RangeToCompare->CpuStart) &&\r |
| | 1302 | (ReservedRangeToCompare->SmramReservedStart < RangeToCompareEnd)) {\r |
| | 1303 | return TRUE;\r |
| | 1304 | }\r |
| | 1305 | return FALSE;\r |
| | 1306 | }\r |
| | 1307 | \r |
| | 1308 | /**\r |
| | 1309 | Get full SMRAM ranges.\r |
| | 1310 | \r |
| | 1311 | It will get SMRAM ranges from SmmAccess protocol and SMRAM reserved ranges from\r |
| | 1312 | SmmConfiguration protocol, split the entries if there is overlap between them.\r |
| | 1313 | It will also reserve one entry for SMM core.\r |
| | 1314 | \r |
| | 1315 | @param[out] FullSmramRangeCount Output pointer to full SMRAM range count.\r |
| | 1316 | \r |
| | 1317 | @return Pointer to full SMRAM ranges.\r |
| | 1318 | \r |
| | 1319 | **/\r |
| | 1320 | EFI_SMRAM_DESCRIPTOR *\r |
| | 1321 | GetFullSmramRanges (\r |
| | 1322 | OUT UINTN *FullSmramRangeCount\r |
| | 1323 | )\r |
| | 1324 | {\r |
| | 1325 | EFI_STATUS Status;\r |
| | 1326 | EFI_SMM_CONFIGURATION_PROTOCOL *SmmConfiguration;\r |
| | 1327 | UINTN Size;\r |
| | 1328 | UINTN Index;\r |
| | 1329 | UINTN Index2;\r |
| | 1330 | EFI_SMRAM_DESCRIPTOR *FullSmramRanges;\r |
| | 1331 | UINTN TempSmramRangeCount;\r |
| | 1332 | UINTN AdditionSmramRangeCount;\r |
| | 1333 | EFI_SMRAM_DESCRIPTOR *TempSmramRanges;\r |
| | 1334 | UINTN SmramRangeCount;\r |
| | 1335 | EFI_SMRAM_DESCRIPTOR *SmramRanges;\r |
| | 1336 | UINTN SmramReservedCount;\r |
| | 1337 | EFI_SMM_RESERVED_SMRAM_REGION *SmramReservedRanges;\r |
| | 1338 | UINTN MaxCount;\r |
| | 1339 | BOOLEAN Rescan;\r |
| | 1340 | \r |
| | 1341 | //\r |
| | 1342 | // Get SMM Configuration Protocol if it is present.\r |
| | 1343 | //\r |
| | 1344 | SmmConfiguration = NULL;\r |
| | 1345 | Status = gBS->LocateProtocol (&gEfiSmmConfigurationProtocolGuid, NULL, (VOID **) &SmmConfiguration);\r |
| | 1346 | \r |
| | 1347 | //\r |
| | 1348 | // Get SMRAM information.\r |
| | 1349 | //\r |
| | 1350 | Size = 0;\r |
| | 1351 | Status = mSmmAccess->GetCapabilities (mSmmAccess, &Size, NULL);\r |
| | 1352 | ASSERT (Status == EFI_BUFFER_TOO_SMALL);\r |
| | 1353 | \r |
| | 1354 | SmramRangeCount = Size / sizeof (EFI_SMRAM_DESCRIPTOR);\r |
| | 1355 | \r |
| | 1356 | //\r |
| | 1357 | // Get SMRAM reserved region count.\r |
| | 1358 | //\r |
| | 1359 | SmramReservedCount = 0;\r |
| | 1360 | if (SmmConfiguration != NULL) {\r |
| | 1361 | while (SmmConfiguration->SmramReservedRegions[SmramReservedCount].SmramReservedSize != 0) {\r |
| | 1362 | SmramReservedCount++;\r |
| | 1363 | }\r |
| | 1364 | }\r |
| | 1365 | \r |
| | 1366 | //\r |
| | 1367 | // Reserve one entry for SMM Core in the full SMRAM ranges.\r |
| | 1368 | //\r |
| | 1369 | AdditionSmramRangeCount = 1;\r |
| | 1370 | if (PcdGet64(PcdLoadModuleAtFixAddressEnable) != 0) {\r |
| | 1371 | //\r |
| | 1372 | // Reserve two entries for all SMM drivers and SMM Core in the full SMRAM ranges.\r |
| | 1373 | //\r |
| | 1374 | AdditionSmramRangeCount = 2;\r |
| | 1375 | }\r |
| | 1376 | \r |
| | 1377 | if (SmramReservedCount == 0) {\r |
| | 1378 | //\r |
| | 1379 | // No reserved SMRAM entry from SMM Configuration Protocol.\r |
| | 1380 | //\r |
| | 1381 | *FullSmramRangeCount = SmramRangeCount + AdditionSmramRangeCount;\r |
| | 1382 | Size = (*FullSmramRangeCount) * sizeof (EFI_SMRAM_DESCRIPTOR);\r |
| | 1383 | FullSmramRanges = (EFI_SMRAM_DESCRIPTOR *) AllocateZeroPool (Size);\r |
| | 1384 | ASSERT (FullSmramRanges != NULL);\r |
| | 1385 | \r |
| | 1386 | Status = mSmmAccess->GetCapabilities (mSmmAccess, &Size, FullSmramRanges);\r |
| | 1387 | ASSERT_EFI_ERROR (Status);\r |
| | 1388 | \r |
| | 1389 | return FullSmramRanges;\r |
| | 1390 | }\r |
| | 1391 | \r |
| | 1392 | //\r |
| | 1393 | // Why MaxCount = X + 2 * Y?\r |
| | 1394 | // Take Y = 1 as example below, Y > 1 case is just the iteration of Y = 1.\r |
| | 1395 | //\r |
| | 1396 | // X = 1 Y = 1 MaxCount = 3 = 1 + 2 * 1\r |
| | 1397 | // ---- ----\r |
| | 1398 | // | | ---- |--|\r |
| | 1399 | // | | | | -> | |\r |
| | 1400 | // | | ---- |--|\r |
| | 1401 | // ---- ----\r |
| | 1402 | //\r |
| | 1403 | // X = 2 Y = 1 MaxCount = 4 = 2 + 2 * 1\r |
| | 1404 | // ---- ----\r |
| | 1405 | // | | | |\r |
| | 1406 | // | | ---- |--|\r |
| | 1407 | // | | | | | |\r |
| | 1408 | // |--| | | -> |--|\r |
| | 1409 | // | | | | | |\r |
| | 1410 | // | | ---- |--|\r |
| | 1411 | // | | | |\r |
| | 1412 | // ---- ----\r |
| | 1413 | //\r |
| | 1414 | // X = 3 Y = 1 MaxCount = 5 = 3 + 2 * 1\r |
| | 1415 | // ---- ----\r |
| | 1416 | // | | | |\r |
| | 1417 | // | | ---- |--|\r |
| | 1418 | // |--| | | |--|\r |
| | 1419 | // | | | | -> | |\r |
| | 1420 | // |--| | | |--|\r |
| | 1421 | // | | ---- |--|\r |
| | 1422 | // | | | |\r |
| | 1423 | // ---- ----\r |
| | 1424 | //\r |
| | 1425 | // ......\r |
| | 1426 | //\r |
| | 1427 | MaxCount = SmramRangeCount + 2 * SmramReservedCount;\r |
| | 1428 | \r |
| | 1429 | Size = MaxCount * sizeof (EFI_SMM_RESERVED_SMRAM_REGION);\r |
| | 1430 | SmramReservedRanges = (EFI_SMM_RESERVED_SMRAM_REGION *) AllocatePool (Size);\r |
| | 1431 | ASSERT (SmramReservedRanges != NULL);\r |
| | 1432 | for (Index = 0; Index < SmramReservedCount; Index++) {\r |
| | 1433 | CopyMem (&SmramReservedRanges[Index], &SmmConfiguration->SmramReservedRegions[Index], sizeof (EFI_SMM_RESERVED_SMRAM_REGION));\r |
| | 1434 | }\r |
| | 1435 | \r |
| | 1436 | Size = MaxCount * sizeof (EFI_SMRAM_DESCRIPTOR);\r |
| | 1437 | TempSmramRanges = (EFI_SMRAM_DESCRIPTOR *) AllocatePool (Size);\r |
| | 1438 | ASSERT (TempSmramRanges != NULL);\r |
| | 1439 | TempSmramRangeCount = 0;\r |
| | 1440 | \r |
| | 1441 | SmramRanges = (EFI_SMRAM_DESCRIPTOR *) AllocatePool (Size);\r |
| | 1442 | ASSERT (SmramRanges != NULL);\r |
| | 1443 | Status = mSmmAccess->GetCapabilities (mSmmAccess, &Size, SmramRanges);\r |
| | 1444 | ASSERT_EFI_ERROR (Status);\r |
| | 1445 | \r |
| | 1446 | do {\r |
| | 1447 | Rescan = FALSE;\r |
| | 1448 | for (Index = 0; (Index < SmramRangeCount) && !Rescan; Index++) {\r |
| | 1449 | //\r |
| | 1450 | // Skip zero size entry.\r |
| | 1451 | //\r |
| | 1452 | if (SmramRanges[Index].PhysicalSize != 0) {\r |
| | 1453 | for (Index2 = 0; (Index2 < SmramReservedCount) && !Rescan; Index2++) {\r |
| | 1454 | //\r |
| | 1455 | // Skip zero size entry.\r |
| | 1456 | //\r |
| | 1457 | if (SmramReservedRanges[Index2].SmramReservedSize != 0) {\r |
| | 1458 | if (SmmIsSmramOverlap (\r |
| | 1459 | &SmramRanges[Index],\r |
| | 1460 | &SmramReservedRanges[Index2]\r |
| | 1461 | )) {\r |
| | 1462 | //\r |
| | 1463 | // There is overlap, need to split entry and then rescan.\r |
| | 1464 | //\r |
| | 1465 | SmmSplitSmramEntry (\r |
| | 1466 | &SmramRanges[Index],\r |
| | 1467 | &SmramReservedRanges[Index2],\r |
| | 1468 | SmramRanges,\r |
| | 1469 | &SmramRangeCount,\r |
| | 1470 | SmramReservedRanges,\r |
| | 1471 | &SmramReservedCount,\r |
| | 1472 | TempSmramRanges,\r |
| | 1473 | &TempSmramRangeCount\r |
| | 1474 | );\r |
| | 1475 | Rescan = TRUE;\r |
| | 1476 | }\r |
| | 1477 | }\r |
| | 1478 | }\r |
| | 1479 | if (!Rescan) {\r |
| | 1480 | //\r |
| | 1481 | // No any overlap, copy the entry to the temp SMRAM ranges.\r |
| | 1482 | // Zero SmramRanges[Index].PhysicalSize = 0;\r |
| | 1483 | //\r |
| | 1484 | CopyMem (&TempSmramRanges[TempSmramRangeCount++], &SmramRanges[Index], sizeof (EFI_SMRAM_DESCRIPTOR));\r |
| | 1485 | SmramRanges[Index].PhysicalSize = 0;\r |
| | 1486 | }\r |
| | 1487 | }\r |
| | 1488 | }\r |
| | 1489 | } while (Rescan);\r |
| | 1490 | ASSERT (TempSmramRangeCount <= MaxCount);\r |
| | 1491 | \r |
| | 1492 | //\r |
| | 1493 | // Sort the entries\r |
| | 1494 | //\r |
| | 1495 | FullSmramRanges = AllocateZeroPool ((TempSmramRangeCount + AdditionSmramRangeCount) * sizeof (EFI_SMRAM_DESCRIPTOR));\r |
| | 1496 | ASSERT (FullSmramRanges != NULL);\r |
| | 1497 | *FullSmramRangeCount = 0;\r |
| | 1498 | do {\r |
| | 1499 | for (Index = 0; Index < TempSmramRangeCount; Index++) {\r |
| | 1500 | if (TempSmramRanges[Index].PhysicalSize != 0) {\r |
| | 1501 | break;\r |
| | 1502 | }\r |
| | 1503 | }\r |
| | 1504 | ASSERT (Index < TempSmramRangeCount);\r |
| | 1505 | for (Index2 = 0; Index2 < TempSmramRangeCount; Index2++) {\r |
| | 1506 | if ((Index2 != Index) && (TempSmramRanges[Index2].PhysicalSize != 0) && (TempSmramRanges[Index2].CpuStart < TempSmramRanges[Index].CpuStart)) {\r |
| | 1507 | Index = Index2;\r |
| | 1508 | }\r |
| | 1509 | }\r |
| | 1510 | CopyMem (&FullSmramRanges[*FullSmramRangeCount], &TempSmramRanges[Index], sizeof (EFI_SMRAM_DESCRIPTOR));\r |
| | 1511 | *FullSmramRangeCount += 1;\r |
| | 1512 | TempSmramRanges[Index].PhysicalSize = 0;\r |
| | 1513 | } while (*FullSmramRangeCount < TempSmramRangeCount);\r |
| | 1514 | ASSERT (*FullSmramRangeCount == TempSmramRangeCount);\r |
| | 1515 | *FullSmramRangeCount += AdditionSmramRangeCount;\r |
| | 1516 | \r |
| | 1517 | FreePool (SmramRanges);\r |
| | 1518 | FreePool (SmramReservedRanges);\r |
| | 1519 | FreePool (TempSmramRanges);\r |
| | 1520 | \r |
| | 1521 | return FullSmramRanges;\r |
| | 1522 | }\r |
| | 1523 | \r |
| | 1524 | /**\r |
| | 1525 | The Entry Point for SMM IPL\r |
| | 1526 | \r |
| | 1527 | Load SMM Core into SMRAM, register SMM Core entry point for SMIs, install \r |
| | 1528 | SMM Base 2 Protocol and SMM Communication Protocol, and register for the \r |
| | 1529 | critical events required to coordinate between DXE and SMM environments.\r |
| | 1530 | \r |
| | 1531 | @param ImageHandle The firmware allocated handle for the EFI image.\r |
| | 1532 | @param SystemTable A pointer to the EFI System Table.\r |
| | 1533 | \r |
| | 1534 | @retval EFI_SUCCESS The entry point is executed successfully.\r |
| | 1535 | @retval Other Some error occurred when executing this entry point.\r |
| | 1536 | \r |
| | 1537 | **/\r |
| | 1538 | EFI_STATUS\r |
| | 1539 | EFIAPI\r |
| | 1540 | SmmIplEntry (\r |
| | 1541 | IN EFI_HANDLE ImageHandle,\r |
| | 1542 | IN EFI_SYSTEM_TABLE *SystemTable\r |
| | 1543 | )\r |
| | 1544 | {\r |
| | 1545 | EFI_STATUS Status;\r |
| | 1546 | UINTN Index;\r |
| | 1547 | UINT64 MaxSize;\r |
| | 1548 | VOID *Registration;\r |
| | 1549 | UINT64 SmmCodeSize;\r |
| | 1550 | EFI_CPU_ARCH_PROTOCOL *CpuArch;\r |
| | 1551 | EFI_STATUS SetAttrStatus;\r |
| | 1552 | EFI_SMRAM_DESCRIPTOR *SmramRangeSmmDriver;\r |
| | 1553 | \r |
| | 1554 | //\r |
| | 1555 | // Fill in the image handle of the SMM IPL so the SMM Core can use this as the \r |
| | 1556 | // ParentImageHandle field of the Load Image Protocol for all SMM Drivers loaded \r |
| | 1557 | // by the SMM Core\r |
| | 1558 | //\r |
| | 1559 | mSmmCorePrivateData.SmmIplImageHandle = ImageHandle;\r |
| | 1560 | \r |
| | 1561 | //\r |
| | 1562 | // Get SMM Access Protocol\r |
| | 1563 | //\r |
| | 1564 | Status = gBS->LocateProtocol (&gEfiSmmAccess2ProtocolGuid, NULL, (VOID **)&mSmmAccess);\r |
| | 1565 | ASSERT_EFI_ERROR (Status);\r |
| | 1566 | \r |
| | 1567 | //\r |
| | 1568 | // Get SMM Control2 Protocol\r |
| | 1569 | //\r |
| | 1570 | Status = gBS->LocateProtocol (&gEfiSmmControl2ProtocolGuid, NULL, (VOID **)&mSmmControl2);\r |
| | 1571 | ASSERT_EFI_ERROR (Status);\r |
| | 1572 | \r |
| | 1573 | gSmmCorePrivate->SmramRanges = GetFullSmramRanges (&gSmmCorePrivate->SmramRangeCount);\r |
| | 1574 | \r |
| | 1575 | //\r |
| | 1576 | // Open all SMRAM ranges\r |
| | 1577 | //\r |
| | 1578 | Status = mSmmAccess->Open (mSmmAccess);\r |
| | 1579 | ASSERT_EFI_ERROR (Status);\r |
| | 1580 | \r |
| | 1581 | //\r |
| | 1582 | // Print debug message that the SMRAM window is now open.\r |
| | 1583 | //\r |
| | 1584 | DEBUG ((DEBUG_INFO, "SMM IPL opened SMRAM window\n"));\r |
| | 1585 | \r |
| | 1586 | //\r |
| | 1587 | // Find the largest SMRAM range between 1MB and 4GB that is at least 256KB - 4K in size\r |
| | 1588 | //\r |
| | 1589 | mCurrentSmramRange = NULL;\r |
| | 1590 | for (Index = 0, MaxSize = SIZE_256KB - EFI_PAGE_SIZE; Index < gSmmCorePrivate->SmramRangeCount; Index++) {\r |
| | 1591 | //\r |
| | 1592 | // Skip any SMRAM region that is already allocated, needs testing, or needs ECC initialization\r |
| | 1593 | //\r |
| | 1594 | if ((gSmmCorePrivate->SmramRanges[Index].RegionState & (EFI_ALLOCATED | EFI_NEEDS_TESTING | EFI_NEEDS_ECC_INITIALIZATION)) != 0) {\r |
| | 1595 | continue;\r |
| | 1596 | }\r |
| | 1597 | \r |
| | 1598 | if (gSmmCorePrivate->SmramRanges[Index].CpuStart >= BASE_1MB) {\r |
| | 1599 | if ((gSmmCorePrivate->SmramRanges[Index].CpuStart + gSmmCorePrivate->SmramRanges[Index].PhysicalSize - 1) <= MAX_ADDRESS) {\r |
| | 1600 | if (gSmmCorePrivate->SmramRanges[Index].PhysicalSize >= MaxSize) {\r |
| | 1601 | MaxSize = gSmmCorePrivate->SmramRanges[Index].PhysicalSize;\r |
| | 1602 | mCurrentSmramRange = &gSmmCorePrivate->SmramRanges[Index];\r |
| | 1603 | }\r |
| | 1604 | }\r |
| | 1605 | }\r |
| | 1606 | }\r |
| | 1607 | \r |
| | 1608 | if (mCurrentSmramRange != NULL) {\r |
| | 1609 | //\r |
| | 1610 | // Print debug message showing SMRAM window that will be used by SMM IPL and SMM Core\r |
| | 1611 | //\r |
| | 1612 | DEBUG ((DEBUG_INFO, "SMM IPL found SMRAM window %p - %p\n", \r |
| | 1613 | (VOID *)(UINTN)mCurrentSmramRange->CpuStart, \r |
| | 1614 | (VOID *)(UINTN)(mCurrentSmramRange->CpuStart + mCurrentSmramRange->PhysicalSize - 1)\r |
| | 1615 | ));\r |
| | 1616 | \r |
| | 1617 | GetSmramCacheRange (mCurrentSmramRange, &mSmramCacheBase, &mSmramCacheSize);\r |
| | 1618 | //\r |
| | 1619 | // If CPU AP is present, attempt to set SMRAM cacheability to WB\r |
| | 1620 | // Note that it is expected that cacheability of SMRAM has been set to WB if CPU AP\r |
| | 1621 | // is not available here.\r |
| | 1622 | //\r |
| | 1623 | CpuArch = NULL;\r |
| | 1624 | Status = gBS->LocateProtocol (&gEfiCpuArchProtocolGuid, NULL, (VOID **)&CpuArch);\r |
| | 1625 | if (!EFI_ERROR (Status)) {\r |
| | 1626 | Status = gDS->SetMemorySpaceAttributes(\r |
| | 1627 | mSmramCacheBase, \r |
| | 1628 | mSmramCacheSize,\r |
| | 1629 | EFI_MEMORY_WB\r |
| | 1630 | );\r |
| | 1631 | if (EFI_ERROR (Status)) {\r |
| | 1632 | DEBUG ((DEBUG_WARN, "SMM IPL failed to set SMRAM window to EFI_MEMORY_WB\n"));\r |
| | 1633 | } \r |
| | 1634 | }\r |
| | 1635 | //\r |
| | 1636 | // if Loading module at Fixed Address feature is enabled, save the SMRAM base to Load\r |
| | 1637 | // Modules At Fixed Address Configuration Table.\r |
| | 1638 | //\r |
| | 1639 | if (PcdGet64(PcdLoadModuleAtFixAddressEnable) != 0) {\r |
| | 1640 | //\r |
| | 1641 | // Build tool will calculate the smm code size and then patch the PcdLoadFixAddressSmmCodePageNumber\r |
| | 1642 | //\r |
| | 1643 | SmmCodeSize = LShiftU64 (PcdGet32(PcdLoadFixAddressSmmCodePageNumber), EFI_PAGE_SHIFT);\r |
| | 1644 | //\r |
| | 1645 | // The SMRAM available memory is assumed to be larger than SmmCodeSize\r |
| | 1646 | //\r |
| | 1647 | ASSERT (mCurrentSmramRange->PhysicalSize > SmmCodeSize);\r |
| | 1648 | //\r |
| | 1649 | // Retrieve Load modules At fixed address configuration table and save the SMRAM base.\r |
| | 1650 | //\r |
| | 1651 | Status = EfiGetSystemConfigurationTable (\r |
| | 1652 | &gLoadFixedAddressConfigurationTableGuid,\r |
| | 1653 | (VOID **) &mLMFAConfigurationTable\r |
| | 1654 | );\r |
| | 1655 | if (!EFI_ERROR (Status) && mLMFAConfigurationTable != NULL) {\r |
| | 1656 | mLMFAConfigurationTable->SmramBase = mCurrentSmramRange->CpuStart;\r |
| | 1657 | //\r |
| | 1658 | // Print the SMRAM base\r |
| | 1659 | //\r |
| | 1660 | DEBUG ((EFI_D_INFO, "LOADING MODULE FIXED INFO: TSEG BASE is %x. \n", mLMFAConfigurationTable->SmramBase));\r |
| | 1661 | }\r |
| | 1662 | \r |
| | 1663 | //\r |
| | 1664 | // Fill the Smram range for all SMM code\r |
| | 1665 | //\r |
| | 1666 | SmramRangeSmmDriver = &gSmmCorePrivate->SmramRanges[gSmmCorePrivate->SmramRangeCount - 2];\r |
| | 1667 | SmramRangeSmmDriver->CpuStart = mCurrentSmramRange->CpuStart;\r |
| | 1668 | SmramRangeSmmDriver->PhysicalStart = mCurrentSmramRange->PhysicalStart;\r |
| | 1669 | SmramRangeSmmDriver->RegionState = mCurrentSmramRange->RegionState | EFI_ALLOCATED;\r |
| | 1670 | SmramRangeSmmDriver->PhysicalSize = SmmCodeSize;\r |
| | 1671 | \r |
| | 1672 | mCurrentSmramRange->PhysicalSize -= SmmCodeSize;\r |
| | 1673 | mCurrentSmramRange->CpuStart = mCurrentSmramRange->CpuStart + SmmCodeSize;\r |
| | 1674 | mCurrentSmramRange->PhysicalStart = mCurrentSmramRange->PhysicalStart + SmmCodeSize;\r |
| | 1675 | }\r |
| | 1676 | //\r |
| | 1677 | // Load SMM Core into SMRAM and execute it from SMRAM\r |
| | 1678 | //\r |
| | 1679 | Status = ExecuteSmmCoreFromSmram (\r |
| | 1680 | mCurrentSmramRange,\r |
| | 1681 | &gSmmCorePrivate->SmramRanges[gSmmCorePrivate->SmramRangeCount - 1],\r |
| | 1682 | gSmmCorePrivate\r |
| | 1683 | );\r |
| | 1684 | if (EFI_ERROR (Status)) {\r |
| | 1685 | //\r |
| | 1686 | // Print error message that the SMM Core failed to be loaded and executed.\r |
| | 1687 | //\r |
| | 1688 | DEBUG ((DEBUG_ERROR, "SMM IPL could not load and execute SMM Core from SMRAM\n"));\r |
| | 1689 | \r |
| | 1690 | //\r |
| | 1691 | // Attempt to reset SMRAM cacheability to UC\r |
| | 1692 | //\r |
| | 1693 | if (CpuArch != NULL) {\r |
| | 1694 | SetAttrStatus = gDS->SetMemorySpaceAttributes(\r |
| | 1695 | mSmramCacheBase, \r |
| | 1696 | mSmramCacheSize,\r |
| | 1697 | EFI_MEMORY_UC\r |
| | 1698 | );\r |
| | 1699 | if (EFI_ERROR (SetAttrStatus)) {\r |
| | 1700 | DEBUG ((DEBUG_WARN, "SMM IPL failed to reset SMRAM window to EFI_MEMORY_UC\n"));\r |
| | 1701 | } \r |
| | 1702 | }\r |
| | 1703 | }\r |
| | 1704 | } else {\r |
| | 1705 | //\r |
| | 1706 | // Print error message that there are not enough SMRAM resources to load the SMM Core.\r |
| | 1707 | //\r |
| | 1708 | DEBUG ((DEBUG_ERROR, "SMM IPL could not find a large enough SMRAM region to load SMM Core\n"));\r |
| | 1709 | }\r |
| | 1710 | \r |
| | 1711 | //\r |
| | 1712 | // If the SMM Core could not be loaded then close SMRAM window, free allocated \r |
| | 1713 | // resources, and return an error so SMM IPL will be unloaded.\r |
| | 1714 | //\r |
| | 1715 | if (mCurrentSmramRange == NULL || EFI_ERROR (Status)) {\r |
| | 1716 | //\r |
| | 1717 | // Close all SMRAM ranges\r |
| | 1718 | //\r |
| | 1719 | Status = mSmmAccess->Close (mSmmAccess);\r |
| | 1720 | ASSERT_EFI_ERROR (Status);\r |
| | 1721 | \r |
| | 1722 | //\r |
| | 1723 | // Print debug message that the SMRAM window is now closed.\r |
| | 1724 | //\r |
| | 1725 | DEBUG ((DEBUG_INFO, "SMM IPL closed SMRAM window\n"));\r |
| | 1726 | \r |
| | 1727 | //\r |
| | 1728 | // Free all allocated resources\r |
| | 1729 | //\r |
| | 1730 | FreePool (gSmmCorePrivate->SmramRanges);\r |
| | 1731 | \r |
| | 1732 | return EFI_UNSUPPORTED;\r |
| | 1733 | }\r |
| | 1734 | \r |
| | 1735 | //\r |
| | 1736 | // Install SMM Base2 Protocol and SMM Communication Protocol\r |
| | 1737 | //\r |
| | 1738 | Status = gBS->InstallMultipleProtocolInterfaces (\r |
| | 1739 | &mSmmIplHandle,\r |
| | 1740 | &gEfiSmmBase2ProtocolGuid, &mSmmBase2,\r |
| | 1741 | &gEfiSmmCommunicationProtocolGuid, &mSmmCommunication,\r |
| | 1742 | NULL\r |
| | 1743 | );\r |
| | 1744 | ASSERT_EFI_ERROR (Status);\r |
| | 1745 | \r |
| | 1746 | //\r |
| | 1747 | // Create the set of protocol and event notififcations that the SMM IPL requires\r |
| | 1748 | //\r |
| | 1749 | for (Index = 0; mSmmIplEvents[Index].NotifyFunction != NULL; Index++) {\r |
| | 1750 | if (mSmmIplEvents[Index].Protocol) {\r |
| | 1751 | mSmmIplEvents[Index].Event = EfiCreateProtocolNotifyEvent (\r |
| | 1752 | mSmmIplEvents[Index].Guid,\r |
| | 1753 | mSmmIplEvents[Index].NotifyTpl,\r |
| | 1754 | mSmmIplEvents[Index].NotifyFunction,\r |
| | 1755 | mSmmIplEvents[Index].NotifyContext,\r |
| | 1756 | &Registration\r |
| | 1757 | );\r |
| | 1758 | } else {\r |
| | 1759 | Status = gBS->CreateEventEx (\r |
| | 1760 | EVT_NOTIFY_SIGNAL,\r |
| | 1761 | mSmmIplEvents[Index].NotifyTpl,\r |
| | 1762 | mSmmIplEvents[Index].NotifyFunction,\r |
| | 1763 | mSmmIplEvents[Index].NotifyContext,\r |
| | 1764 | mSmmIplEvents[Index].Guid,\r |
| | 1765 | &mSmmIplEvents[Index].Event\r |
| | 1766 | );\r |
| | 1767 | ASSERT_EFI_ERROR (Status);\r |
| | 1768 | }\r |
| | 1769 | }\r |
| | 1770 | \r |
| | 1771 | return EFI_SUCCESS;\r |
| | 1772 | }\r |
projects / mirror_edk2.git / blame_incremental