/** @file\r
SMM IPL that produces SMM related runtime protocols and load the SMM Core into SMRAM\r
\r
- Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved.<BR>\r
+ Copyright (c) 2009 - 2017, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials are licensed and made available \r
under the terms and conditions of the BSD License which accompanies this \r
distribution. The full text of the license may be found at \r
#include <Protocol/SmmConfiguration.h>\r
#include <Protocol/SmmControl2.h>\r
#include <Protocol/DxeSmmReadyToLock.h>\r
-#include <Protocol/FirmwareVolume2.h>\r
+#include <Protocol/Cpu.h>\r
\r
#include <Guid/EventGroup.h>\r
#include <Guid/EventLegacyBios.h>\r
+#include <Guid/LoadModuleAtFixedAddress.h>\r
\r
#include <Library/BaseLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
#include <Library/DxeServicesTableLib.h>\r
+#include <Library/DxeServicesLib.h>\r
#include <Library/UefiLib.h>\r
#include <Library/UefiRuntimeLib.h>\r
+#include <Library/PcdLib.h>\r
+#include <Library/ReportStatusCodeLib.h>\r
\r
#include "PiSmmCorePrivateData.h"\r
\r
after SetVirtualAddressMap().\r
\r
@param[in] This The EFI_SMM_COMMUNICATION_PROTOCOL instance.\r
- @param[in out] CommBuffer A pointer to the buffer to convey into SMRAM.\r
- @param[in out] CommSize The size of the data buffer being passed in.On exit, the size of data\r
+ @param[in, out] CommBuffer A pointer to the buffer to convey into SMRAM.\r
+ @param[in, out] CommSize The size of the data buffer being passed in.On exit, the size of data\r
being returned. Zero if the handler does not wish to reply with any data.\r
\r
@retval EFI_SUCCESS The message was successfully posted.\r
@param Event The Event that is being processed, not used.\r
@param Context Event Context, not used.\r
\r
+**/\r
+VOID\r
+EFIAPI\r
+SmmIplDxeDispatchEventNotify (\r
+ IN EFI_EVENT Event,\r
+ IN VOID *Context\r
+ );\r
+\r
+/**\r
+ Event notification that is fired when a GUIDed Event Group is signaled.\r
+\r
+ @param Event The Event that is being processed, not used.\r
+ @param Context Event Context, not used.\r
+\r
**/\r
VOID\r
EFIAPI\r
IN VOID *Context\r
);\r
\r
+/**\r
+ Event notification that is fired when EndOfDxe Event Group is signaled.\r
+\r
+ @param Event The Event that is being processed, not used.\r
+ @param Context Event Context, not used.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+SmmIplEndOfDxeEventNotify (\r
+ IN EFI_EVENT Event,\r
+ IN VOID *Context\r
+ );\r
+\r
/**\r
Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE.\r
\r
EFI_GUID *Guid;\r
EFI_EVENT_NOTIFY NotifyFunction;\r
VOID *NotifyContext;\r
+ EFI_TPL NotifyTpl;\r
EFI_EVENT Event;\r
} SMM_IPL_EVENT_NOTIFICATION;\r
\r
FALSE, // SmmEntryPointRegistered\r
FALSE, // InSmm\r
NULL, // Smst\r
- 0, // BufferSize\r
NULL, // CommunicationBuffer\r
+ 0, // BufferSize\r
EFI_SUCCESS // ReturnStatus\r
};\r
\r
EFI_SMM_ACCESS2_PROTOCOL *mSmmAccess;\r
EFI_SMRAM_DESCRIPTOR *mCurrentSmramRange;\r
BOOLEAN mSmmLocked = FALSE;\r
+BOOLEAN mEndOfDxe = FALSE;\r
+EFI_PHYSICAL_ADDRESS mSmramCacheBase;\r
+UINT64 mSmramCacheSize;\r
+\r
+EFI_SMM_COMMUNICATE_HEADER mCommunicateHeader;\r
+EFI_LOAD_FIXED_ADDRESS_CONFIGURATION_TABLE *mLMFAConfigurationTable = NULL;\r
\r
//\r
// Table of Protocol notification and GUIDed Event notifications that the SMM IPL requires\r
//\r
SMM_IPL_EVENT_NOTIFICATION mSmmIplEvents[] = {\r
//\r
- // Declare protocol notification on the SMM Configuration protocol. When this notification is etablished, \r
+ // Declare protocol notification on the SMM Configuration protocol. When this notification is established,\r
// the associated event is immediately signalled, so the notification function will be executed and the \r
// SMM Configuration Protocol will be found if it is already in the handle database.\r
//\r
- { TRUE, FALSE, &gEfiSmmConfigurationProtocolGuid, SmmIplSmmConfigurationEventNotify, &gEfiSmmConfigurationProtocolGuid, NULL },\r
+ { TRUE, FALSE, &gEfiSmmConfigurationProtocolGuid, SmmIplSmmConfigurationEventNotify, &gEfiSmmConfigurationProtocolGuid, TPL_NOTIFY, NULL },\r
//\r
- // Declare protocl notification on DxeSmmReadyToLock protocols. When this notification is etablished, \r
+ // Declare protocol notification on DxeSmmReadyToLock protocols. When this notification is established, \r
// the associated event is immediately signalled, so the notification function will be executed and the \r
// DXE SMM Ready To Lock Protocol will be found if it is already in the handle database.\r
//\r
- { TRUE, TRUE, &gEfiDxeSmmReadyToLockProtocolGuid, SmmIplReadyToLockEventNotify, &gEfiDxeSmmReadyToLockProtocolGuid, NULL },\r
+ { TRUE, TRUE, &gEfiDxeSmmReadyToLockProtocolGuid, SmmIplReadyToLockEventNotify, &gEfiDxeSmmReadyToLockProtocolGuid, TPL_CALLBACK, NULL },\r
+ //\r
+ // Declare event notification on EndOfDxe event. When this notification is established,\r
+ // the associated event is immediately signalled, so the notification function will be executed and the \r
+ // SMM End Of Dxe Protocol will be found if it is already in the handle database.\r
+ //\r
+ { FALSE, TRUE, &gEfiEndOfDxeEventGroupGuid, SmmIplGuidedEventNotify, &gEfiEndOfDxeEventGroupGuid, TPL_CALLBACK, NULL },\r
+ //\r
+ // Declare event notification on EndOfDxe event. This is used to set EndOfDxe event signaled flag.\r
+ //\r
+ { FALSE, TRUE, &gEfiEndOfDxeEventGroupGuid, SmmIplEndOfDxeEventNotify, &gEfiEndOfDxeEventGroupGuid, TPL_CALLBACK, NULL },\r
//\r
// Declare event notification on the DXE Dispatch Event Group. This event is signaled by the DXE Core\r
// each time the DXE Core dispatcher has completed its work. When this event is signalled, the SMM Core\r
// if notified, so the SMM Core can dispatch SMM drivers.\r
//\r
- { FALSE, TRUE, &gEfiEventDxeDispatchGuid, SmmIplGuidedEventNotify, &gEfiEventDxeDispatchGuid, NULL },\r
+ { FALSE, TRUE, &gEfiEventDxeDispatchGuid, SmmIplDxeDispatchEventNotify, &gEfiEventDxeDispatchGuid, TPL_CALLBACK, NULL },\r
//\r
// Declare event notification on Ready To Boot Event Group. This is an extra event notification that is\r
// used to make sure SMRAM is locked before any boot options are processed.\r
//\r
- { FALSE, TRUE, &gEfiEventReadyToBootGuid, SmmIplReadyToLockEventNotify, &gEfiEventReadyToBootGuid, NULL },\r
+ { FALSE, TRUE, &gEfiEventReadyToBootGuid, SmmIplReadyToLockEventNotify, &gEfiEventReadyToBootGuid, TPL_CALLBACK, NULL },\r
//\r
// Declare event notification on Legacy Boot Event Group. This is used to inform the SMM Core that the platform \r
// is performing a legacy boot operation, and that the UEFI environment is no longer available and the SMM Core \r
// must guarantee that it does not access any UEFI related structures outside of SMRAM.\r
+ // It is also to inform the SMM Core to notify SMM driver that system enter legacy boot.\r
+ //\r
+ { FALSE, FALSE, &gEfiEventLegacyBootGuid, SmmIplGuidedEventNotify, &gEfiEventLegacyBootGuid, TPL_CALLBACK, NULL },\r
+ //\r
+ // Declare event notification on Exit Boot Services Event Group. This is used to inform the SMM Core\r
+ // to notify SMM driver that system enter exit boot services.\r
//\r
- { FALSE, FALSE, &gEfiEventLegacyBootGuid, SmmIplGuidedEventNotify, &gEfiEventLegacyBootGuid, NULL },\r
+ { FALSE, FALSE, &gEfiEventExitBootServicesGuid, SmmIplGuidedEventNotify, &gEfiEventExitBootServicesGuid, TPL_CALLBACK, NULL },\r
+ //\r
+ // Declare event notification on Ready To Boot Event Group. This is used to inform the SMM Core\r
+ // to notify SMM driver that system enter ready to boot.\r
+ //\r
+ { FALSE, FALSE, &gEfiEventReadyToBootGuid, SmmIplGuidedEventNotify, &gEfiEventReadyToBootGuid, TPL_CALLBACK, NULL },\r
//\r
// Declare event notification on SetVirtualAddressMap() Event Group. This is used to convert gSmmCorePrivate \r
// and mSmmControl2 from physical addresses to virtual addresses.\r
//\r
- { FALSE, FALSE, &gEfiEventVirtualAddressChangeGuid, SmmIplSetVirtualAddressNotify, NULL, NULL },\r
+ { FALSE, FALSE, &gEfiEventVirtualAddressChangeGuid, SmmIplSetVirtualAddressNotify, NULL, TPL_CALLBACK, NULL },\r
//\r
// Terminate the table of event notifications\r
//\r
- { FALSE, FALSE, NULL, NULL, NULL, NULL }\r
+ { FALSE, FALSE, NULL, NULL, NULL, TPL_CALLBACK, NULL }\r
};\r
\r
+/**\r
+ Find the maximum SMRAM cache range that covers the range specified by SmramRange.\r
+ \r
+ This function searches and joins all adjacent ranges of SmramRange into a range to be cached.\r
+\r
+ @param SmramRange The SMRAM range to search from.\r
+ @param SmramCacheBase The returned cache range base.\r
+ @param SmramCacheSize The returned cache range size.\r
+\r
+**/\r
+VOID\r
+GetSmramCacheRange (\r
+ IN EFI_SMRAM_DESCRIPTOR *SmramRange,\r
+ OUT EFI_PHYSICAL_ADDRESS *SmramCacheBase,\r
+ OUT UINT64 *SmramCacheSize\r
+ )\r
+{\r
+ UINTN Index;\r
+ EFI_PHYSICAL_ADDRESS RangeCpuStart;\r
+ UINT64 RangePhysicalSize;\r
+ BOOLEAN FoundAjacentRange;\r
+\r
+ *SmramCacheBase = SmramRange->CpuStart;\r
+ *SmramCacheSize = SmramRange->PhysicalSize;\r
+\r
+ do {\r
+ FoundAjacentRange = FALSE;\r
+ for (Index = 0; Index < gSmmCorePrivate->SmramRangeCount; Index++) {\r
+ RangeCpuStart = gSmmCorePrivate->SmramRanges[Index].CpuStart;\r
+ RangePhysicalSize = gSmmCorePrivate->SmramRanges[Index].PhysicalSize;\r
+ if (RangeCpuStart < *SmramCacheBase && *SmramCacheBase == (RangeCpuStart + RangePhysicalSize)) {\r
+ *SmramCacheBase = RangeCpuStart;\r
+ *SmramCacheSize += RangePhysicalSize;\r
+ FoundAjacentRange = TRUE;\r
+ } else if ((*SmramCacheBase + *SmramCacheSize) == RangeCpuStart && RangePhysicalSize > 0) {\r
+ *SmramCacheSize += RangePhysicalSize;\r
+ FoundAjacentRange = TRUE;\r
+ }\r
+ }\r
+ } while (FoundAjacentRange);\r
+ \r
+}\r
+\r
/**\r
Indicate whether the driver is currently executing in the SMM Initialization phase.\r
\r
after SetVirtualAddressMap().\r
\r
@param[in] This The EFI_SMM_COMMUNICATION_PROTOCOL instance.\r
- @param[in out] CommBuffer A pointer to the buffer to convey into SMRAM.\r
- @param[in out] CommSize The size of the data buffer being passed in.On exit, the size of data\r
+ @param[in, out] CommBuffer A pointer to the buffer to convey into SMRAM.\r
+ @param[in, out] CommSize The size of the data buffer being passed in. On exit, the size of data\r
being returned. Zero if the handler does not wish to reply with any data.\r
+ This parameter is optional and may be NULL.\r
\r
@retval EFI_SUCCESS The message was successfully posted.\r
@retval EFI_INVALID_PARAMETER The CommBuffer was NULL.\r
+ @retval EFI_BAD_BUFFER_SIZE The buffer is too large for the MM implementation.\r
+ If this error is returned, the MessageLength field\r
+ in the CommBuffer header or the integer pointed by\r
+ CommSize, are updated to reflect the maximum payload\r
+ size the implementation can accommodate.\r
+ @retval EFI_ACCESS_DENIED The CommunicateBuffer parameter or CommSize parameter,\r
+ if not omitted, are in address range that cannot be\r
+ accessed by the MM environment.\r
+\r
**/\r
EFI_STATUS\r
EFIAPI\r
SmmCommunicationCommunicate (\r
IN CONST EFI_SMM_COMMUNICATION_PROTOCOL *This,\r
IN OUT VOID *CommBuffer,\r
- IN OUT UINTN *CommSize\r
+ IN OUT UINTN *CommSize OPTIONAL\r
)\r
{\r
EFI_STATUS Status;\r
EFI_SMM_COMMUNICATE_HEADER *CommunicateHeader;\r
BOOLEAN OldInSmm;\r
+ UINTN TempCommSize;\r
\r
//\r
// Check parameters\r
//\r
- if ((CommBuffer == NULL) || (CommSize == NULL)) {\r
+ if (CommBuffer == NULL) {\r
return EFI_INVALID_PARAMETER;\r
}\r
\r
+ CommunicateHeader = (EFI_SMM_COMMUNICATE_HEADER *) CommBuffer;\r
+\r
+ if (CommSize == NULL) {\r
+ TempCommSize = OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data) + CommunicateHeader->MessageLength;\r
+ } else {\r
+ TempCommSize = *CommSize;\r
+ //\r
+ // CommSize must hold HeaderGuid and MessageLength\r
+ //\r
+ if (TempCommSize < OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data)) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+ }\r
+\r
//\r
// If not already in SMM, then generate a Software SMI\r
//\r
// Put arguments for Software SMI in gSmmCorePrivate\r
//\r
gSmmCorePrivate->CommunicationBuffer = CommBuffer;\r
- gSmmCorePrivate->BufferSize = CommSize;\r
+ gSmmCorePrivate->BufferSize = TempCommSize;\r
\r
//\r
// Generate Software SMI\r
//\r
// Return status from software SMI \r
//\r
+ if (CommSize != NULL) {\r
+ *CommSize = gSmmCorePrivate->BufferSize;\r
+ }\r
return gSmmCorePrivate->ReturnStatus;\r
}\r
\r
//\r
// If we are in SMM, then the execution mode must be physical, which means that\r
// OS established virtual addresses can not be used. If SetVirtualAddressMap()\r
- // has been called, then a direct invocation of the Software SMI is not \r
- // not allowed so return EFI_INVALID_PARAMETER.\r
+ // has been called, then a direct invocation of the Software SMI is not allowed,\r
+ // so return EFI_INVALID_PARAMETER.\r
//\r
if (EfiGoneVirtual()) {\r
return EFI_INVALID_PARAMETER;\r
}\r
\r
+ //\r
+ // If we are not in SMM, don't allow call SmiManage() directly when SMRAM is closed or locked.\r
+ //\r
+ if ((!gSmmCorePrivate->InSmm) && (!mSmmAccess->OpenState || mSmmAccess->LockState)) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+ \r
//\r
// Save current InSmm state and set InSmm state to TRUE\r
//\r
gSmmCorePrivate->InSmm = TRUE;\r
\r
//\r
- // Already in SMM and before SetVirtualAddressMap(), so call SmiManage() directly.\r
+ // Before SetVirtualAddressMap(), we are in SMM or SMRAM is open and unlocked, call SmiManage() directly.\r
//\r
- CommunicateHeader = (EFI_SMM_COMMUNICATE_HEADER *)CommBuffer;\r
- *CommSize -= OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data);\r
+ TempCommSize -= OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data);\r
Status = gSmmCorePrivate->Smst->SmiManage (\r
&CommunicateHeader->HeaderGuid, \r
NULL, \r
CommunicateHeader->Data, \r
- CommSize\r
+ &TempCommSize\r
);\r
-\r
- //\r
- // Update CommunicationBuffer, BufferSize and ReturnStatus\r
- // Communicate service finished, reset the pointer to CommBuffer to NULL\r
- //\r
- *CommSize += OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data);\r
+ TempCommSize += OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data);\r
+ if (CommSize != NULL) {\r
+ *CommSize = TempCommSize;\r
+ }\r
\r
//\r
// Restore original InSmm state\r
//\r
gSmmCorePrivate->InSmm = OldInSmm;\r
\r
- return (Status == EFI_WARN_INTERRUPT_SOURCE_QUIESCED) ? EFI_SUCCESS : EFI_NOT_FOUND;\r
+ return (Status == EFI_SUCCESS) ? EFI_SUCCESS : EFI_NOT_FOUND;\r
}\r
\r
/**\r
- Event notification that is fired when DxeDispatch Event Group is signaled.\r
+ Event notification that is fired when GUIDed Event Group is signaled.\r
\r
@param Event The Event that is being processed, not used.\r
@param Context Event Context, not used.\r
IN VOID *Context\r
)\r
{\r
- EFI_SMM_COMMUNICATE_HEADER CommunicateHeader;\r
UINTN Size;\r
\r
//\r
// Use Guid to initialize EFI_SMM_COMMUNICATE_HEADER structure \r
//\r
- CopyGuid (&CommunicateHeader.HeaderGuid, (EFI_GUID *)Context);\r
- CommunicateHeader.MessageLength = 1;\r
- CommunicateHeader.Data[0] = 0;\r
+ CopyGuid (&mCommunicateHeader.HeaderGuid, (EFI_GUID *)Context);\r
+ mCommunicateHeader.MessageLength = 1;\r
+ mCommunicateHeader.Data[0] = 0;\r
\r
//\r
// Generate the Software SMI and return the result\r
//\r
- Size = sizeof (CommunicateHeader);\r
- SmmCommunicationCommunicate (&mSmmCommunication, &CommunicateHeader, &Size);\r
+ Size = sizeof (mCommunicateHeader);\r
+ SmmCommunicationCommunicate (&mSmmCommunication, &mCommunicateHeader, &Size);\r
+}\r
+\r
+/**\r
+ Event notification that is fired when EndOfDxe Event Group is signaled.\r
+\r
+ @param Event The Event that is being processed, not used.\r
+ @param Context Event Context, not used.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+SmmIplEndOfDxeEventNotify (\r
+ IN EFI_EVENT Event,\r
+ IN VOID *Context\r
+ )\r
+{\r
+ mEndOfDxe = TRUE;\r
+}\r
+\r
+/**\r
+ Event notification that is fired when DxeDispatch Event Group is signaled.\r
+\r
+ @param Event The Event that is being processed, not used.\r
+ @param Context Event Context, not used.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+SmmIplDxeDispatchEventNotify (\r
+ IN EFI_EVENT Event,\r
+ IN VOID *Context\r
+ )\r
+{\r
+ UINTN Size;\r
+ EFI_STATUS Status;\r
+\r
+ //\r
+ // Keep calling the SMM Core Dispatcher until there is no request to restart it.\r
+ //\r
+ while (TRUE) {\r
+ //\r
+ // Use Guid to initialize EFI_SMM_COMMUNICATE_HEADER structure\r
+ // Clear the buffer passed into the Software SMI. This buffer will return\r
+ // the status of the SMM Core Dispatcher.\r
+ //\r
+ CopyGuid (&mCommunicateHeader.HeaderGuid, (EFI_GUID *)Context);\r
+ mCommunicateHeader.MessageLength = 1;\r
+ mCommunicateHeader.Data[0] = 0;\r
+\r
+ //\r
+ // Generate the Software SMI and return the result\r
+ //\r
+ Size = sizeof (mCommunicateHeader);\r
+ SmmCommunicationCommunicate (&mSmmCommunication, &mCommunicateHeader, &Size);\r
+ \r
+ //\r
+ // Return if there is no request to restart the SMM Core Dispatcher\r
+ //\r
+ if (mCommunicateHeader.Data[0] != COMM_BUFFER_SMM_DISPATCH_RESTART) {\r
+ return;\r
+ }\r
+ \r
+ //\r
+ // Attempt to reset SMRAM cacheability to UC\r
+ // Assume CPU AP is available at this time\r
+ //\r
+ Status = gDS->SetMemorySpaceAttributes(\r
+ mSmramCacheBase, \r
+ mSmramCacheSize,\r
+ EFI_MEMORY_UC\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((DEBUG_WARN, "SMM IPL failed to reset SMRAM window to EFI_MEMORY_UC\n"));\r
+ } \r
+\r
+ //\r
+ // Close all SMRAM ranges to protect SMRAM\r
+ //\r
+ Status = mSmmAccess->Close (mSmmAccess);\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ //\r
+ // Print debug message that the SMRAM window is now closed.\r
+ //\r
+ DEBUG ((DEBUG_INFO, "SMM IPL closed SMRAM window\n"));\r
+ }\r
}\r
\r
/**\r
ASSERT_EFI_ERROR (Status);\r
\r
//\r
- // Set flag to indicate that the SM< Entry Point has been registered which \r
+ // Set flag to indicate that the SMM Entry Point has been registered which \r
// means that SMIs are now fully operational.\r
//\r
gSmmCorePrivate->SmmEntryPointRegistered = TRUE;\r
// Print debug message showing SMM Core entry point address.\r
//\r
DEBUG ((DEBUG_INFO, "SMM IPL registered SMM Entry Point address %p\n", (VOID *)(UINTN)gSmmCorePrivate->SmmEntryPoint));\r
-\r
- //\r
- // Attempt to reset SMRAM cacheability to UC\r
- //\r
- Status = gDS->SetMemorySpaceAttributes(\r
- mCurrentSmramRange->CpuStart, \r
- mCurrentSmramRange->PhysicalSize,\r
- EFI_MEMORY_UC\r
- );\r
- if (EFI_ERROR (Status)) {\r
- DEBUG ((DEBUG_WARN, "SMM IPL failed to reset SMRAM window to EFI_MEMORY_UC\n"));\r
- } \r
-\r
- //\r
- // Close all SMRAM ranges to protect SMRAM\r
- //\r
- Status = mSmmAccess->Close (mSmmAccess);\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- //\r
- // Print debug message that the SMRAM window is now closed.\r
- //\r
- DEBUG ((DEBUG_INFO, "SMM IPL closed SMRAM window\n"));\r
}\r
\r
/**\r
Event notification that is fired every time a DxeSmmReadyToLock protocol is added\r
- or if gEfiEventReadyToBootGuid is signalled.\r
+ or if gEfiEventReadyToBootGuid is signaled.\r
\r
@param Event The Event that is being processed, not used.\r
@param Context Event Context, not used.\r
} else {\r
//\r
// If SMM is not locked yet and we got here from gEfiEventReadyToBootGuid being \r
- // signalled, then gEfiDxeSmmReadyToLockProtocolGuid was not installed as expected.\r
+ // signaled, then gEfiDxeSmmReadyToLockProtocolGuid was not installed as expected.\r
// Print a warning on debug builds.\r
//\r
DEBUG ((DEBUG_WARN, "SMM IPL! DXE SMM Ready To Lock Protocol not installed before Ready To Boot signal\n"));\r
}\r
\r
+ if (!mEndOfDxe) {\r
+ DEBUG ((DEBUG_ERROR, "EndOfDxe Event must be signaled before DxeSmmReadyToLock Protocol installation!\n"));\r
+ REPORT_STATUS_CODE (\r
+ EFI_ERROR_CODE | EFI_ERROR_UNRECOVERED,\r
+ (EFI_SOFTWARE_SMM_DRIVER | EFI_SW_EC_ILLEGAL_SOFTWARE_STATE)\r
+ );\r
+ ASSERT (FALSE);\r
+ }\r
+\r
//\r
// Lock the SMRAM (Note: Locking SMRAM may not be supported on all platforms)\r
//\r
mSmmAccess->Lock (mSmmAccess);\r
-\r
+ \r
//\r
// Close protocol and event notification events that do not apply after the \r
// DXE SMM Ready To Lock Protocol has been installed or the Ready To Boot \r
}\r
\r
/**\r
- Searches all Firmware Volumes for the first file matching FileType and SectionType and returns the section data.\r
-\r
- @param FileType FileType to search for within any of the firmware volumes in the platform.\r
- @param SectionType SectionType to search for within any of the matching FileTypes in the firmware volumes in the platform.\r
- @param SourceSize Return the size of the returned section data..\r
-\r
- @retval != NULL Pointer to the allocated buffer containing the section data.\r
- @retval NULL Section data was not found.\r
+ Get the fixed loading address from image header assigned by build tool. This function only be called\r
+ when Loading module at Fixed address feature enabled.\r
\r
+ @param ImageContext Pointer to the image context structure that describes the PE/COFF\r
+ image that needs to be examined by this function.\r
+ @retval EFI_SUCCESS An fixed loading address is assigned to this image by build tools .\r
+ @retval EFI_NOT_FOUND The image has no assigned fixed loading address.\r
**/\r
-VOID *\r
-GetSectionInAnyFv (\r
- IN EFI_FV_FILETYPE FileType,\r
- IN EFI_SECTION_TYPE SectionType,\r
- OUT UINTN *SourceSize\r
+EFI_STATUS\r
+GetPeCoffImageFixLoadingAssignedAddress(\r
+ IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext\r
)\r
{\r
- EFI_STATUS Status;\r
- UINTN HandleCount;\r
- EFI_HANDLE *HandleBuffer;\r
- UINTN Index;\r
- EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv;\r
- UINTN Key;\r
- EFI_GUID NameGuid;\r
- EFI_FV_FILE_ATTRIBUTES Attributes;\r
- VOID *SourceBuffer;\r
- UINT32 AuthenticationStatus;\r
-\r
- HandleBuffer = NULL;\r
- Status = gBS->LocateHandleBuffer (\r
- ByProtocol,\r
- &gEfiFirmwareVolume2ProtocolGuid,\r
- NULL,\r
- &HandleCount,\r
- &HandleBuffer\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return NULL;\r
- }\r
-\r
- for (Index = 0; Index < HandleCount; Index++) {\r
- Status = gBS->HandleProtocol (\r
- HandleBuffer[Index],\r
- &gEfiFirmwareVolume2ProtocolGuid,\r
- (VOID **)&Fv\r
- );\r
- if (EFI_ERROR (Status)) {\r
- continue;\r
- }\r
-\r
- //\r
- // Use Firmware Volume 2 Protocol to search for a file of type FileType\r
- //\r
- Key = 0; \r
- Status = Fv->GetNextFile (Fv, &Key, &FileType, &NameGuid, &Attributes, SourceSize);\r
- if (EFI_ERROR (Status)) {\r
- continue;\r
- }\r
-\r
- //\r
- // Use Firmware Volume 2 Protocol to read a section of type SectionType\r
- //\r
- SourceBuffer = NULL;\r
- Status = Fv->ReadSection (Fv, &NameGuid, SectionType, 0, &SourceBuffer, SourceSize, &AuthenticationStatus);\r
- if (!EFI_ERROR (Status)) {\r
- FreePool (HandleBuffer);\r
- return SourceBuffer;\r
- }\r
- } \r
-\r
- FreePool(HandleBuffer);\r
- \r
- return NULL;\r
+ UINTN SectionHeaderOffset;\r
+ EFI_STATUS Status;\r
+ EFI_IMAGE_SECTION_HEADER SectionHeader;\r
+ EFI_IMAGE_OPTIONAL_HEADER_UNION *ImgHdr;\r
+ EFI_PHYSICAL_ADDRESS FixLoadingAddress;\r
+ UINT16 Index;\r
+ UINTN Size;\r
+ UINT16 NumberOfSections;\r
+ EFI_PHYSICAL_ADDRESS SmramBase;\r
+ UINT64 SmmCodeSize;\r
+ UINT64 ValueInSectionHeader;\r
+ //\r
+ // Build tool will calculate the smm code size and then patch the PcdLoadFixAddressSmmCodePageNumber\r
+ //\r
+ SmmCodeSize = EFI_PAGES_TO_SIZE (PcdGet32(PcdLoadFixAddressSmmCodePageNumber));\r
+ \r
+ FixLoadingAddress = 0;\r
+ Status = EFI_NOT_FOUND;\r
+ SmramBase = mLMFAConfigurationTable->SmramBase;\r
+ //\r
+ // Get PeHeader pointer\r
+ //\r
+ ImgHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)((CHAR8* )ImageContext->Handle + ImageContext->PeCoffHeaderOffset);\r
+ SectionHeaderOffset = ImageContext->PeCoffHeaderOffset +\r
+ sizeof (UINT32) +\r
+ sizeof (EFI_IMAGE_FILE_HEADER) +\r
+ ImgHdr->Pe32.FileHeader.SizeOfOptionalHeader;\r
+ NumberOfSections = ImgHdr->Pe32.FileHeader.NumberOfSections;\r
+\r
+ //\r
+ // Get base address from the first section header that doesn't point to code section.\r
+ //\r
+ for (Index = 0; Index < NumberOfSections; Index++) {\r
+ //\r
+ // Read section header from file\r
+ //\r
+ Size = sizeof (EFI_IMAGE_SECTION_HEADER);\r
+ Status = ImageContext->ImageRead (\r
+ ImageContext->Handle,\r
+ SectionHeaderOffset,\r
+ &Size,\r
+ &SectionHeader\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
+ \r
+ Status = EFI_NOT_FOUND;\r
+ \r
+ if ((SectionHeader.Characteristics & EFI_IMAGE_SCN_CNT_CODE) == 0) {\r
+ //\r
+ // Build tool saves the offset to SMRAM base as image base in PointerToRelocations & PointerToLineNumbers fields in the\r
+ // first section header that doesn't point to code section in image header. And there is an assumption that when the\r
+ // feature is enabled, if a module is assigned a loading address by tools, PointerToRelocations & PointerToLineNumbers\r
+ // fields should NOT be Zero, or else, these 2 fields should be set to Zero\r
+ //\r
+ ValueInSectionHeader = ReadUnaligned64((UINT64*)&SectionHeader.PointerToRelocations);\r
+ if (ValueInSectionHeader != 0) {\r
+ //\r
+ // Found first section header that doesn't point to code section in which build tool saves the\r
+ // offset to SMRAM base as image base in PointerToRelocations & PointerToLineNumbers fields\r
+ //\r
+ FixLoadingAddress = (EFI_PHYSICAL_ADDRESS)(SmramBase + (INT64)ValueInSectionHeader);\r
+\r
+ if (SmramBase + SmmCodeSize > FixLoadingAddress && SmramBase <= FixLoadingAddress) {\r
+ //\r
+ // The assigned address is valid. Return the specified loading address\r
+ //\r
+ ImageContext->ImageAddress = FixLoadingAddress;\r
+ Status = EFI_SUCCESS;\r
+ }\r
+ }\r
+ break;\r
+ }\r
+ SectionHeaderOffset += sizeof (EFI_IMAGE_SECTION_HEADER);\r
+ }\r
+ DEBUG ((EFI_D_INFO|EFI_D_LOAD, "LOADING MODULE FIXED INFO: Loading module at fixed address %x, Status = %r \n", FixLoadingAddress, Status));\r
+ return Status;\r
}\r
-\r
/**\r
Load the SMM Core image into SMRAM and executes the SMM Core from SMRAM.\r
\r
- @param[in] SmramRange Descriptor for the range of SMRAM to reload the \r
- currently executing image.\r
- @param[in] Context Context to pass into SMM Core\r
+ @param[in, out] SmramRange Descriptor for the range of SMRAM to reload the \r
+ currently executing image, the rang of SMRAM to\r
+ hold SMM Core will be excluded.\r
+ @param[in, out] SmramRangeSmmCore Descriptor for the range of SMRAM to hold SMM Core.\r
+\r
+ @param[in] Context Context to pass into SMM Core\r
\r
@return EFI_STATUS\r
\r
**/\r
EFI_STATUS\r
ExecuteSmmCoreFromSmram (\r
- IN EFI_SMRAM_DESCRIPTOR *SmramRange,\r
- IN VOID *Context\r
+ IN OUT EFI_SMRAM_DESCRIPTOR *SmramRange,\r
+ IN OUT EFI_SMRAM_DESCRIPTOR *SmramRangeSmmCore,\r
+ IN VOID *Context\r
)\r
{\r
EFI_STATUS Status;\r
UINTN SourceSize;\r
PE_COFF_LOADER_IMAGE_CONTEXT ImageContext;\r
UINTN PageCount;\r
- EFI_PHYSICAL_ADDRESS DestinationBuffer;\r
EFI_IMAGE_ENTRY_POINT EntryPoint;\r
\r
//\r
// Search all Firmware Volumes for a PE/COFF image in a file of type SMM_CORE\r
// \r
- SourceBuffer = GetSectionInAnyFv (EFI_FV_FILETYPE_SMM_CORE, EFI_SECTION_PE32, &SourceSize);\r
- if (SourceBuffer == NULL) {\r
- return EFI_NOT_FOUND;\r
+ Status = GetSectionFromAnyFvByFileType (\r
+ EFI_FV_FILETYPE_SMM_CORE, \r
+ 0,\r
+ EFI_SECTION_PE32, \r
+ 0,\r
+ &SourceBuffer, \r
+ &SourceSize\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
}\r
\r
//\r
if (EFI_ERROR (Status)) {\r
return Status;\r
}\r
-\r
//\r
- // Allocate memory for the image being loaded from the EFI_SRAM_DESCRIPTOR \r
- // specified by SmramRange\r
+ // if Loading module at Fixed Address feature is enabled, the SMM core driver will be loaded to \r
+ // the address assigned by build tool.\r
//\r
- PageCount = (UINTN)EFI_SIZE_TO_PAGES(ImageContext.ImageSize + ImageContext.SectionAlignment);\r
+ if (PcdGet64(PcdLoadModuleAtFixAddressEnable) != 0) {\r
+ //\r
+ // Get the fixed loading address assigned by Build tool\r
+ //\r
+ Status = GetPeCoffImageFixLoadingAssignedAddress (&ImageContext);\r
+ if (!EFI_ERROR (Status)) {\r
+ //\r
+ // 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
+ //\r
+ PageCount = 0;\r
+ //\r
+ // Reserved Smram Region for SmmCore is not used, and remove it from SmramRangeCount.\r
+ //\r
+ gSmmCorePrivate->SmramRangeCount --;\r
+ } else {\r
+ DEBUG ((EFI_D_INFO, "LOADING MODULE FIXED ERROR: Loading module at fixed address at address failed\n"));\r
+ //\r
+ // Allocate memory for the image being loaded from the EFI_SRAM_DESCRIPTOR \r
+ // specified by SmramRange\r
+ //\r
+ PageCount = (UINTN)EFI_SIZE_TO_PAGES((UINTN)ImageContext.ImageSize + ImageContext.SectionAlignment);\r
\r
- ASSERT ((SmramRange->PhysicalSize & EFI_PAGE_MASK) == 0);\r
- ASSERT (SmramRange->PhysicalSize > EFI_PAGES_TO_SIZE (PageCount));\r
+ ASSERT ((SmramRange->PhysicalSize & EFI_PAGE_MASK) == 0);\r
+ ASSERT (SmramRange->PhysicalSize > EFI_PAGES_TO_SIZE (PageCount));\r
\r
- SmramRange->PhysicalSize -= EFI_PAGES_TO_SIZE (PageCount);\r
- DestinationBuffer = SmramRange->CpuStart + SmramRange->PhysicalSize;\r
+ SmramRange->PhysicalSize -= EFI_PAGES_TO_SIZE (PageCount);\r
+ SmramRangeSmmCore->CpuStart = SmramRange->CpuStart + SmramRange->PhysicalSize;\r
+ SmramRangeSmmCore->PhysicalStart = SmramRange->PhysicalStart + SmramRange->PhysicalSize;\r
+ SmramRangeSmmCore->RegionState = SmramRange->RegionState | EFI_ALLOCATED;\r
+ SmramRangeSmmCore->PhysicalSize = EFI_PAGES_TO_SIZE (PageCount);\r
\r
- //\r
- // Align buffer on section boundry\r
- //\r
- ImageContext.ImageAddress = DestinationBuffer;\r
+ //\r
+ // Align buffer on section boundary\r
+ //\r
+ ImageContext.ImageAddress = SmramRangeSmmCore->CpuStart;\r
+ }\r
+ } else {\r
+ //\r
+ // Allocate memory for the image being loaded from the EFI_SRAM_DESCRIPTOR \r
+ // specified by SmramRange\r
+ //\r
+ PageCount = (UINTN)EFI_SIZE_TO_PAGES((UINTN)ImageContext.ImageSize + ImageContext.SectionAlignment);\r
+\r
+ ASSERT ((SmramRange->PhysicalSize & EFI_PAGE_MASK) == 0);\r
+ ASSERT (SmramRange->PhysicalSize > EFI_PAGES_TO_SIZE (PageCount));\r
+\r
+ SmramRange->PhysicalSize -= EFI_PAGES_TO_SIZE (PageCount);\r
+ SmramRangeSmmCore->CpuStart = SmramRange->CpuStart + SmramRange->PhysicalSize;\r
+ SmramRangeSmmCore->PhysicalStart = SmramRange->PhysicalStart + SmramRange->PhysicalSize;\r
+ SmramRangeSmmCore->RegionState = SmramRange->RegionState | EFI_ALLOCATED;\r
+ SmramRangeSmmCore->PhysicalSize = EFI_PAGES_TO_SIZE (PageCount);\r
+\r
+ //\r
+ // Align buffer on section boundary\r
+ //\r
+ ImageContext.ImageAddress = SmramRangeSmmCore->CpuStart;\r
+ }\r
+ \r
ImageContext.ImageAddress += ImageContext.SectionAlignment - 1;\r
- ImageContext.ImageAddress &= ~(ImageContext.SectionAlignment - 1);\r
+ ImageContext.ImageAddress &= ~((EFI_PHYSICAL_ADDRESS)ImageContext.SectionAlignment - 1);\r
\r
//\r
// Print debug message showing SMM Core load address.\r
//\r
DEBUG ((DEBUG_INFO, "SMM IPL calling SMM Core at SMRAM address %p\n", (VOID *)(UINTN)ImageContext.EntryPoint));\r
\r
+ gSmmCorePrivate->PiSmmCoreImageBase = ImageContext.ImageAddress;\r
+ gSmmCorePrivate->PiSmmCoreImageSize = ImageContext.ImageSize;\r
+ DEBUG ((DEBUG_INFO, "PiSmmCoreImageBase - 0x%016lx\n", gSmmCorePrivate->PiSmmCoreImageBase));\r
+ DEBUG ((DEBUG_INFO, "PiSmmCoreImageSize - 0x%016lx\n", gSmmCorePrivate->PiSmmCoreImageSize));\r
+\r
+ gSmmCorePrivate->PiSmmCoreEntryPoint = ImageContext.EntryPoint;\r
+\r
//\r
// Execute image\r
//\r
}\r
\r
//\r
- // If the load operation, relocate operation, or the image execution return an\r
- // error, then free memory allocated from the EFI_SRAM_DESCRIPTOR specified by \r
- // SmramRange\r
+ // Always free memory allocted by GetFileBufferByFilePath ()\r
//\r
- if (EFI_ERROR (Status)) {\r
- SmramRange->PhysicalSize += EFI_PAGES_TO_SIZE (PageCount);\r
+ FreePool (SourceBuffer);\r
+\r
+ return Status;\r
+}\r
+\r
+/**\r
+ SMM split SMRAM entry.\r
+\r
+ @param[in, out] RangeToCompare Pointer to EFI_SMRAM_DESCRIPTOR to compare.\r
+ @param[in, out] ReservedRangeToCompare Pointer to EFI_SMM_RESERVED_SMRAM_REGION to compare.\r
+ @param[out] Ranges Output pointer to hold split EFI_SMRAM_DESCRIPTOR entry.\r
+ @param[in, out] RangeCount Pointer to range count.\r
+ @param[out] ReservedRanges Output pointer to hold split EFI_SMM_RESERVED_SMRAM_REGION entry.\r
+ @param[in, out] ReservedRangeCount Pointer to reserved range count.\r
+ @param[out] FinalRanges Output pointer to hold split final EFI_SMRAM_DESCRIPTOR entry\r
+ that no need to be split anymore.\r
+ @param[in, out] FinalRangeCount Pointer to final range count.\r
+\r
+**/\r
+VOID\r
+SmmSplitSmramEntry (\r
+ IN OUT EFI_SMRAM_DESCRIPTOR *RangeToCompare,\r
+ IN OUT EFI_SMM_RESERVED_SMRAM_REGION *ReservedRangeToCompare,\r
+ OUT EFI_SMRAM_DESCRIPTOR *Ranges,\r
+ IN OUT UINTN *RangeCount,\r
+ OUT EFI_SMM_RESERVED_SMRAM_REGION *ReservedRanges,\r
+ IN OUT UINTN *ReservedRangeCount,\r
+ OUT EFI_SMRAM_DESCRIPTOR *FinalRanges,\r
+ IN OUT UINTN *FinalRangeCount\r
+ )\r
+{\r
+ UINT64 RangeToCompareEnd;\r
+ UINT64 ReservedRangeToCompareEnd;\r
+\r
+ RangeToCompareEnd = RangeToCompare->CpuStart + RangeToCompare->PhysicalSize;\r
+ ReservedRangeToCompareEnd = ReservedRangeToCompare->SmramReservedStart + ReservedRangeToCompare->SmramReservedSize;\r
+\r
+ if ((RangeToCompare->CpuStart >= ReservedRangeToCompare->SmramReservedStart) &&\r
+ (RangeToCompare->CpuStart < ReservedRangeToCompareEnd)) {\r
+ if (RangeToCompareEnd < ReservedRangeToCompareEnd) {\r
+ //\r
+ // RangeToCompare ReservedRangeToCompare\r
+ // ---- ---- --------------------------------------\r
+ // | | | | -> 1. ReservedRangeToCompare\r
+ // ---- | | |--| --------------------------------------\r
+ // | | | | | |\r
+ // | | | | | | -> 2. FinalRanges[*FinalRangeCount] and increment *FinalRangeCount\r
+ // | | | | | | RangeToCompare->PhysicalSize = 0\r
+ // ---- | | |--| --------------------------------------\r
+ // | | | | -> 3. ReservedRanges[*ReservedRangeCount] and increment *ReservedRangeCount\r
+ // ---- ---- --------------------------------------\r
+ //\r
+\r
+ //\r
+ // 1. Update ReservedRangeToCompare.\r
+ //\r
+ ReservedRangeToCompare->SmramReservedSize = RangeToCompare->CpuStart - ReservedRangeToCompare->SmramReservedStart;\r
+ //\r
+ // 2. Update FinalRanges[FinalRangeCount] and increment *FinalRangeCount.\r
+ // Zero RangeToCompare->PhysicalSize.\r
+ //\r
+ FinalRanges[*FinalRangeCount].CpuStart = RangeToCompare->CpuStart;\r
+ FinalRanges[*FinalRangeCount].PhysicalStart = RangeToCompare->PhysicalStart;\r
+ FinalRanges[*FinalRangeCount].RegionState = RangeToCompare->RegionState | EFI_ALLOCATED;\r
+ FinalRanges[*FinalRangeCount].PhysicalSize = RangeToCompare->PhysicalSize;\r
+ *FinalRangeCount += 1;\r
+ RangeToCompare->PhysicalSize = 0;\r
+ //\r
+ // 3. Update ReservedRanges[*ReservedRangeCount] and increment *ReservedRangeCount.\r
+ //\r
+ ReservedRanges[*ReservedRangeCount].SmramReservedStart = FinalRanges[*FinalRangeCount - 1].CpuStart + FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r
+ ReservedRanges[*ReservedRangeCount].SmramReservedSize = ReservedRangeToCompareEnd - RangeToCompareEnd;\r
+ *ReservedRangeCount += 1;\r
+ } else {\r
+ //\r
+ // RangeToCompare ReservedRangeToCompare\r
+ // ---- ---- --------------------------------------\r
+ // | | | | -> 1. ReservedRangeToCompare\r
+ // ---- | | |--| --------------------------------------\r
+ // | | | | | |\r
+ // | | | | | | -> 2. FinalRanges[*FinalRangeCount] and increment *FinalRangeCount\r
+ // | | | | | |\r
+ // | | ---- |--| --------------------------------------\r
+ // | | | | -> 3. RangeToCompare\r
+ // ---- ---- --------------------------------------\r
+ //\r
+\r
+ //\r
+ // 1. Update ReservedRangeToCompare.\r
+ //\r
+ ReservedRangeToCompare->SmramReservedSize = RangeToCompare->CpuStart - ReservedRangeToCompare->SmramReservedStart;\r
+ //\r
+ // 2. Update FinalRanges[FinalRangeCount] and increment *FinalRangeCount.\r
+ //\r
+ FinalRanges[*FinalRangeCount].CpuStart = RangeToCompare->CpuStart;\r
+ FinalRanges[*FinalRangeCount].PhysicalStart = RangeToCompare->PhysicalStart;\r
+ FinalRanges[*FinalRangeCount].RegionState = RangeToCompare->RegionState | EFI_ALLOCATED;\r
+ FinalRanges[*FinalRangeCount].PhysicalSize = ReservedRangeToCompareEnd - RangeToCompare->CpuStart;\r
+ *FinalRangeCount += 1;\r
+ //\r
+ // 3. Update RangeToCompare.\r
+ //\r
+ RangeToCompare->CpuStart += FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r
+ RangeToCompare->PhysicalStart += FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r
+ RangeToCompare->PhysicalSize -= FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r
+ }\r
+ } else if ((ReservedRangeToCompare->SmramReservedStart >= RangeToCompare->CpuStart) &&\r
+ (ReservedRangeToCompare->SmramReservedStart < RangeToCompareEnd)) {\r
+ if (ReservedRangeToCompareEnd < RangeToCompareEnd) {\r
+ //\r
+ // RangeToCompare ReservedRangeToCompare\r
+ // ---- ---- --------------------------------------\r
+ // | | | | -> 1. RangeToCompare\r
+ // | | ---- |--| --------------------------------------\r
+ // | | | | | |\r
+ // | | | | | | -> 2. FinalRanges[*FinalRangeCount] and increment *FinalRangeCount\r
+ // | | | | | | ReservedRangeToCompare->SmramReservedSize = 0\r
+ // | | ---- |--| --------------------------------------\r
+ // | | | | -> 3. Ranges[*RangeCount] and increment *RangeCount\r
+ // ---- ---- --------------------------------------\r
+ //\r
+\r
+ //\r
+ // 1. Update RangeToCompare.\r
+ //\r
+ RangeToCompare->PhysicalSize = ReservedRangeToCompare->SmramReservedStart - RangeToCompare->CpuStart;\r
+ //\r
+ // 2. Update FinalRanges[FinalRangeCount] and increment *FinalRangeCount.\r
+ // ReservedRangeToCompare->SmramReservedSize = 0\r
+ //\r
+ FinalRanges[*FinalRangeCount].CpuStart = ReservedRangeToCompare->SmramReservedStart;\r
+ FinalRanges[*FinalRangeCount].PhysicalStart = RangeToCompare->PhysicalStart + RangeToCompare->PhysicalSize;\r
+ FinalRanges[*FinalRangeCount].RegionState = RangeToCompare->RegionState | EFI_ALLOCATED;\r
+ FinalRanges[*FinalRangeCount].PhysicalSize = ReservedRangeToCompare->SmramReservedSize;\r
+ *FinalRangeCount += 1;\r
+ ReservedRangeToCompare->SmramReservedSize = 0;\r
+ //\r
+ // 3. Update Ranges[*RangeCount] and increment *RangeCount.\r
+ //\r
+ Ranges[*RangeCount].CpuStart = FinalRanges[*FinalRangeCount - 1].CpuStart + FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r
+ Ranges[*RangeCount].PhysicalStart = FinalRanges[*FinalRangeCount - 1].PhysicalStart + FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r
+ Ranges[*RangeCount].RegionState = RangeToCompare->RegionState;\r
+ Ranges[*RangeCount].PhysicalSize = RangeToCompareEnd - ReservedRangeToCompareEnd;\r
+ *RangeCount += 1;\r
+ } else {\r
+ //\r
+ // RangeToCompare ReservedRangeToCompare\r
+ // ---- ---- --------------------------------------\r
+ // | | | | -> 1. RangeToCompare\r
+ // | | ---- |--| --------------------------------------\r
+ // | | | | | |\r
+ // | | | | | | -> 2. FinalRanges[*FinalRangeCount] and increment *FinalRangeCount\r
+ // | | | | | |\r
+ // ---- | | |--| --------------------------------------\r
+ // | | | | -> 3. ReservedRangeToCompare\r
+ // ---- ---- --------------------------------------\r
+ //\r
+\r
+ //\r
+ // 1. Update RangeToCompare.\r
+ //\r
+ RangeToCompare->PhysicalSize = ReservedRangeToCompare->SmramReservedStart - RangeToCompare->CpuStart;\r
+ //\r
+ // 2. Update FinalRanges[FinalRangeCount] and increment *FinalRangeCount.\r
+ // ReservedRangeToCompare->SmramReservedSize = 0\r
+ //\r
+ FinalRanges[*FinalRangeCount].CpuStart = ReservedRangeToCompare->SmramReservedStart;\r
+ FinalRanges[*FinalRangeCount].PhysicalStart = RangeToCompare->PhysicalStart + RangeToCompare->PhysicalSize;\r
+ FinalRanges[*FinalRangeCount].RegionState = RangeToCompare->RegionState | EFI_ALLOCATED;\r
+ FinalRanges[*FinalRangeCount].PhysicalSize = RangeToCompareEnd - ReservedRangeToCompare->SmramReservedStart;\r
+ *FinalRangeCount += 1;\r
+ //\r
+ // 3. Update ReservedRangeToCompare.\r
+ //\r
+ ReservedRangeToCompare->SmramReservedStart += FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r
+ ReservedRangeToCompare->SmramReservedSize -= FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r
+ }\r
}\r
+}\r
+\r
+/**\r
+ Returns if SMRAM range and SMRAM reserved range are overlapped.\r
+\r
+ @param[in] RangeToCompare Pointer to EFI_SMRAM_DESCRIPTOR to compare.\r
+ @param[in] ReservedRangeToCompare Pointer to EFI_SMM_RESERVED_SMRAM_REGION to compare.\r
\r
+ @retval TRUE There is overlap.\r
+ @retval FALSE There is no overlap.\r
+\r
+**/\r
+BOOLEAN\r
+SmmIsSmramOverlap (\r
+ IN EFI_SMRAM_DESCRIPTOR *RangeToCompare,\r
+ IN EFI_SMM_RESERVED_SMRAM_REGION *ReservedRangeToCompare\r
+ )\r
+{\r
+ UINT64 RangeToCompareEnd;\r
+ UINT64 ReservedRangeToCompareEnd;\r
+\r
+ RangeToCompareEnd = RangeToCompare->CpuStart + RangeToCompare->PhysicalSize;\r
+ ReservedRangeToCompareEnd = ReservedRangeToCompare->SmramReservedStart + ReservedRangeToCompare->SmramReservedSize;\r
+\r
+ if ((RangeToCompare->CpuStart >= ReservedRangeToCompare->SmramReservedStart) &&\r
+ (RangeToCompare->CpuStart < ReservedRangeToCompareEnd)) {\r
+ return TRUE;\r
+ } else if ((ReservedRangeToCompare->SmramReservedStart >= RangeToCompare->CpuStart) &&\r
+ (ReservedRangeToCompare->SmramReservedStart < RangeToCompareEnd)) {\r
+ return TRUE;\r
+ }\r
+ return FALSE;\r
+}\r
+\r
+/**\r
+ Get full SMRAM ranges.\r
+\r
+ It will get SMRAM ranges from SmmAccess protocol and SMRAM reserved ranges from\r
+ SmmConfiguration protocol, split the entries if there is overlap between them.\r
+ It will also reserve one entry for SMM core.\r
+\r
+ @param[out] FullSmramRangeCount Output pointer to full SMRAM range count.\r
+\r
+ @return Pointer to full SMRAM ranges.\r
+\r
+**/\r
+EFI_SMRAM_DESCRIPTOR *\r
+GetFullSmramRanges (\r
+ OUT UINTN *FullSmramRangeCount\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_SMM_CONFIGURATION_PROTOCOL *SmmConfiguration;\r
+ UINTN Size;\r
+ UINTN Index;\r
+ UINTN Index2;\r
+ EFI_SMRAM_DESCRIPTOR *FullSmramRanges;\r
+ UINTN TempSmramRangeCount;\r
+ UINTN AdditionSmramRangeCount;\r
+ EFI_SMRAM_DESCRIPTOR *TempSmramRanges;\r
+ UINTN SmramRangeCount;\r
+ EFI_SMRAM_DESCRIPTOR *SmramRanges;\r
+ UINTN SmramReservedCount;\r
+ EFI_SMM_RESERVED_SMRAM_REGION *SmramReservedRanges;\r
+ UINTN MaxCount;\r
+ BOOLEAN Rescan;\r
+\r
+ //\r
+ // Get SMM Configuration Protocol if it is present.\r
//\r
- // Always free memory allocted by GetFileBufferByFilePath ()\r
+ SmmConfiguration = NULL;\r
+ Status = gBS->LocateProtocol (&gEfiSmmConfigurationProtocolGuid, NULL, (VOID **) &SmmConfiguration);\r
+\r
//\r
- FreePool (SourceBuffer);\r
+ // Get SMRAM information.\r
+ //\r
+ Size = 0;\r
+ Status = mSmmAccess->GetCapabilities (mSmmAccess, &Size, NULL);\r
+ ASSERT (Status == EFI_BUFFER_TOO_SMALL);\r
\r
- return Status;\r
+ SmramRangeCount = Size / sizeof (EFI_SMRAM_DESCRIPTOR);\r
+\r
+ //\r
+ // Get SMRAM reserved region count.\r
+ //\r
+ SmramReservedCount = 0;\r
+ if (SmmConfiguration != NULL) {\r
+ while (SmmConfiguration->SmramReservedRegions[SmramReservedCount].SmramReservedSize != 0) {\r
+ SmramReservedCount++;\r
+ }\r
+ }\r
+\r
+ //\r
+ // Reserve one entry for SMM Core in the full SMRAM ranges.\r
+ //\r
+ AdditionSmramRangeCount = 1;\r
+ if (PcdGet64(PcdLoadModuleAtFixAddressEnable) != 0) {\r
+ //\r
+ // Reserve two entries for all SMM drivers and SMM Core in the full SMRAM ranges.\r
+ //\r
+ AdditionSmramRangeCount = 2;\r
+ }\r
+\r
+ if (SmramReservedCount == 0) {\r
+ //\r
+ // No reserved SMRAM entry from SMM Configuration Protocol.\r
+ //\r
+ *FullSmramRangeCount = SmramRangeCount + AdditionSmramRangeCount;\r
+ Size = (*FullSmramRangeCount) * sizeof (EFI_SMRAM_DESCRIPTOR);\r
+ FullSmramRanges = (EFI_SMRAM_DESCRIPTOR *) AllocateZeroPool (Size);\r
+ ASSERT (FullSmramRanges != NULL);\r
+\r
+ Status = mSmmAccess->GetCapabilities (mSmmAccess, &Size, FullSmramRanges);\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ return FullSmramRanges;\r
+ }\r
+\r
+ //\r
+ // Why MaxCount = X + 2 * Y?\r
+ // Take Y = 1 as example below, Y > 1 case is just the iteration of Y = 1.\r
+ //\r
+ // X = 1 Y = 1 MaxCount = 3 = 1 + 2 * 1\r
+ // ---- ----\r
+ // | | ---- |--|\r
+ // | | | | -> | |\r
+ // | | ---- |--|\r
+ // ---- ----\r
+ //\r
+ // X = 2 Y = 1 MaxCount = 4 = 2 + 2 * 1\r
+ // ---- ----\r
+ // | | | |\r
+ // | | ---- |--|\r
+ // | | | | | |\r
+ // |--| | | -> |--|\r
+ // | | | | | |\r
+ // | | ---- |--|\r
+ // | | | |\r
+ // ---- ----\r
+ //\r
+ // X = 3 Y = 1 MaxCount = 5 = 3 + 2 * 1\r
+ // ---- ----\r
+ // | | | |\r
+ // | | ---- |--|\r
+ // |--| | | |--|\r
+ // | | | | -> | |\r
+ // |--| | | |--|\r
+ // | | ---- |--|\r
+ // | | | |\r
+ // ---- ----\r
+ //\r
+ // ......\r
+ //\r
+ MaxCount = SmramRangeCount + 2 * SmramReservedCount;\r
+\r
+ Size = MaxCount * sizeof (EFI_SMM_RESERVED_SMRAM_REGION);\r
+ SmramReservedRanges = (EFI_SMM_RESERVED_SMRAM_REGION *) AllocatePool (Size);\r
+ ASSERT (SmramReservedRanges != NULL);\r
+ for (Index = 0; Index < SmramReservedCount; Index++) {\r
+ CopyMem (&SmramReservedRanges[Index], &SmmConfiguration->SmramReservedRegions[Index], sizeof (EFI_SMM_RESERVED_SMRAM_REGION));\r
+ }\r
+\r
+ Size = MaxCount * sizeof (EFI_SMRAM_DESCRIPTOR);\r
+ TempSmramRanges = (EFI_SMRAM_DESCRIPTOR *) AllocatePool (Size);\r
+ ASSERT (TempSmramRanges != NULL);\r
+ TempSmramRangeCount = 0;\r
+\r
+ SmramRanges = (EFI_SMRAM_DESCRIPTOR *) AllocatePool (Size);\r
+ ASSERT (SmramRanges != NULL);\r
+ Status = mSmmAccess->GetCapabilities (mSmmAccess, &Size, SmramRanges);\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ do {\r
+ Rescan = FALSE;\r
+ for (Index = 0; (Index < SmramRangeCount) && !Rescan; Index++) {\r
+ //\r
+ // Skip zero size entry.\r
+ //\r
+ if (SmramRanges[Index].PhysicalSize != 0) {\r
+ for (Index2 = 0; (Index2 < SmramReservedCount) && !Rescan; Index2++) {\r
+ //\r
+ // Skip zero size entry.\r
+ //\r
+ if (SmramReservedRanges[Index2].SmramReservedSize != 0) {\r
+ if (SmmIsSmramOverlap (\r
+ &SmramRanges[Index],\r
+ &SmramReservedRanges[Index2]\r
+ )) {\r
+ //\r
+ // There is overlap, need to split entry and then rescan.\r
+ //\r
+ SmmSplitSmramEntry (\r
+ &SmramRanges[Index],\r
+ &SmramReservedRanges[Index2],\r
+ SmramRanges,\r
+ &SmramRangeCount,\r
+ SmramReservedRanges,\r
+ &SmramReservedCount,\r
+ TempSmramRanges,\r
+ &TempSmramRangeCount\r
+ );\r
+ Rescan = TRUE;\r
+ }\r
+ }\r
+ }\r
+ if (!Rescan) {\r
+ //\r
+ // No any overlap, copy the entry to the temp SMRAM ranges.\r
+ // Zero SmramRanges[Index].PhysicalSize = 0;\r
+ //\r
+ CopyMem (&TempSmramRanges[TempSmramRangeCount++], &SmramRanges[Index], sizeof (EFI_SMRAM_DESCRIPTOR));\r
+ SmramRanges[Index].PhysicalSize = 0;\r
+ }\r
+ }\r
+ }\r
+ } while (Rescan);\r
+ ASSERT (TempSmramRangeCount <= MaxCount);\r
+\r
+ //\r
+ // Sort the entries\r
+ //\r
+ FullSmramRanges = AllocateZeroPool ((TempSmramRangeCount + AdditionSmramRangeCount) * sizeof (EFI_SMRAM_DESCRIPTOR));\r
+ ASSERT (FullSmramRanges != NULL);\r
+ *FullSmramRangeCount = 0;\r
+ do {\r
+ for (Index = 0; Index < TempSmramRangeCount; Index++) {\r
+ if (TempSmramRanges[Index].PhysicalSize != 0) {\r
+ break;\r
+ }\r
+ }\r
+ ASSERT (Index < TempSmramRangeCount);\r
+ for (Index2 = 0; Index2 < TempSmramRangeCount; Index2++) {\r
+ if ((Index2 != Index) && (TempSmramRanges[Index2].PhysicalSize != 0) && (TempSmramRanges[Index2].CpuStart < TempSmramRanges[Index].CpuStart)) {\r
+ Index = Index2;\r
+ }\r
+ }\r
+ CopyMem (&FullSmramRanges[*FullSmramRangeCount], &TempSmramRanges[Index], sizeof (EFI_SMRAM_DESCRIPTOR));\r
+ *FullSmramRangeCount += 1;\r
+ TempSmramRanges[Index].PhysicalSize = 0;\r
+ } while (*FullSmramRangeCount < TempSmramRangeCount);\r
+ ASSERT (*FullSmramRangeCount == TempSmramRangeCount);\r
+ *FullSmramRangeCount += AdditionSmramRangeCount;\r
+\r
+ FreePool (SmramRanges);\r
+ FreePool (SmramReservedRanges);\r
+ FreePool (TempSmramRanges);\r
+\r
+ return FullSmramRanges;\r
}\r
\r
/**\r
)\r
{\r
EFI_STATUS Status;\r
- EFI_SMM_CONFIGURATION_PROTOCOL *SmmConfiguration;\r
- UINTN Size;\r
UINTN Index;\r
- EFI_SMM_RESERVED_SMRAM_REGION *SmramResRegion;\r
UINT64 MaxSize;\r
VOID *Registration;\r
+ UINT64 SmmCodeSize;\r
+ EFI_CPU_ARCH_PROTOCOL *CpuArch;\r
+ EFI_STATUS SetAttrStatus;\r
+ EFI_SMRAM_DESCRIPTOR *SmramRangeSmmDriver;\r
\r
//\r
// Fill in the image handle of the SMM IPL so the SMM Core can use this as the \r
Status = gBS->LocateProtocol (&gEfiSmmControl2ProtocolGuid, NULL, (VOID **)&mSmmControl2);\r
ASSERT_EFI_ERROR (Status);\r
\r
- //\r
- // Get SMM Configuration Protocol if it is present\r
- //\r
- SmmConfiguration = NULL;\r
- Status = gBS->LocateProtocol (&gEfiSmmConfigurationProtocolGuid, NULL, (VOID **) &SmmConfiguration);\r
-\r
- //\r
- // Get SMRAM information\r
- //\r
- Size = 0;\r
- Status = mSmmAccess->GetCapabilities (mSmmAccess, &Size, NULL);\r
- ASSERT (Status == EFI_BUFFER_TOO_SMALL);\r
-\r
- gSmmCorePrivate->SmramRanges = (EFI_SMRAM_DESCRIPTOR *)AllocatePool (Size);\r
- ASSERT (gSmmCorePrivate->SmramRanges != NULL);\r
-\r
- Status = mSmmAccess->GetCapabilities (mSmmAccess, &Size, gSmmCorePrivate->SmramRanges);\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- gSmmCorePrivate->SmramRangeCount = Size / sizeof (EFI_SMRAM_DESCRIPTOR);\r
+ gSmmCorePrivate->SmramRanges = GetFullSmramRanges (&gSmmCorePrivate->SmramRangeCount);\r
\r
//\r
// Open all SMRAM ranges\r
// Print debug message that the SMRAM window is now open.\r
//\r
DEBUG ((DEBUG_INFO, "SMM IPL opened SMRAM window\n"));\r
-\r
- //\r
- // Subtract SMRAM any reserved SMRAM regions.\r
- //\r
- if (SmmConfiguration != NULL) {\r
- SmramResRegion = SmmConfiguration->SmramReservedRegions;\r
- while (SmramResRegion->SmramReservedSize != 0) {\r
- for (Index = 0; Index < gSmmCorePrivate->SmramRangeCount; Index ++) {\r
- if ((SmramResRegion->SmramReservedStart >= gSmmCorePrivate->SmramRanges[Index].CpuStart) && \\r
- ((SmramResRegion->SmramReservedStart + SmramResRegion->SmramReservedSize) <= \\r
- (gSmmCorePrivate->SmramRanges[Index].CpuStart + gSmmCorePrivate->SmramRanges[Index].PhysicalSize))) {\r
- //\r
- // This range has reserved area, calculate the left free size\r
- //\r
- gSmmCorePrivate->SmramRanges[Index].PhysicalSize = SmramResRegion->SmramReservedStart - gSmmCorePrivate->SmramRanges[Index].CpuStart;\r
- }\r
- }\r
- SmramResRegion++;\r
- }\r
- }\r
\r
//\r
- // Find the largest SMRAM range between 1MB and 4GB that is at least 1MB in size\r
+ // Find the largest SMRAM range between 1MB and 4GB that is at least 256KB - 4K in size\r
//\r
mCurrentSmramRange = NULL;\r
- for (Index = 0, MaxSize = SIZE_1MB; Index < gSmmCorePrivate->SmramRangeCount; Index++) {\r
+ for (Index = 0, MaxSize = SIZE_256KB - EFI_PAGE_SIZE; Index < gSmmCorePrivate->SmramRangeCount; Index++) {\r
+ //\r
+ // Skip any SMRAM region that is already allocated, needs testing, or needs ECC initialization\r
+ //\r
+ if ((gSmmCorePrivate->SmramRanges[Index].RegionState & (EFI_ALLOCATED | EFI_NEEDS_TESTING | EFI_NEEDS_ECC_INITIALIZATION)) != 0) {\r
+ continue;\r
+ }\r
+\r
if (gSmmCorePrivate->SmramRanges[Index].CpuStart >= BASE_1MB) {\r
- if ((gSmmCorePrivate->SmramRanges[Index].CpuStart + gSmmCorePrivate->SmramRanges[Index].PhysicalSize) <= BASE_4GB) {\r
+ if ((gSmmCorePrivate->SmramRanges[Index].CpuStart + gSmmCorePrivate->SmramRanges[Index].PhysicalSize - 1) <= MAX_ADDRESS) {\r
if (gSmmCorePrivate->SmramRanges[Index].PhysicalSize >= MaxSize) {\r
MaxSize = gSmmCorePrivate->SmramRanges[Index].PhysicalSize;\r
mCurrentSmramRange = &gSmmCorePrivate->SmramRanges[Index];\r
(VOID *)(UINTN)(mCurrentSmramRange->CpuStart + mCurrentSmramRange->PhysicalSize - 1)\r
));\r
\r
+ GetSmramCacheRange (mCurrentSmramRange, &mSmramCacheBase, &mSmramCacheSize);\r
//\r
- // Attempt to set SMRAM cacheability to WB\r
+ // If CPU AP is present, attempt to set SMRAM cacheability to WB\r
+ // Note that it is expected that cacheability of SMRAM has been set to WB if CPU AP\r
+ // is not available here.\r
//\r
- Status = gDS->SetMemorySpaceAttributes(\r
- mCurrentSmramRange->CpuStart, \r
- mCurrentSmramRange->PhysicalSize,\r
- EFI_MEMORY_WB\r
- );\r
- if (EFI_ERROR (Status)) {\r
- DEBUG ((DEBUG_WARN, "SMM IPL failed to set SMRAM window to EFI_MEMORY_WB\n"));\r
- } \r
+ CpuArch = NULL;\r
+ Status = gBS->LocateProtocol (&gEfiCpuArchProtocolGuid, NULL, (VOID **)&CpuArch);\r
+ if (!EFI_ERROR (Status)) {\r
+ Status = gDS->SetMemorySpaceAttributes(\r
+ mSmramCacheBase, \r
+ mSmramCacheSize,\r
+ EFI_MEMORY_WB\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((DEBUG_WARN, "SMM IPL failed to set SMRAM window to EFI_MEMORY_WB\n"));\r
+ } \r
+ }\r
+ //\r
+ // if Loading module at Fixed Address feature is enabled, save the SMRAM base to Load\r
+ // Modules At Fixed Address Configuration Table.\r
+ //\r
+ if (PcdGet64(PcdLoadModuleAtFixAddressEnable) != 0) {\r
+ //\r
+ // Build tool will calculate the smm code size and then patch the PcdLoadFixAddressSmmCodePageNumber\r
+ //\r
+ SmmCodeSize = LShiftU64 (PcdGet32(PcdLoadFixAddressSmmCodePageNumber), EFI_PAGE_SHIFT);\r
+ //\r
+ // The SMRAM available memory is assumed to be larger than SmmCodeSize\r
+ //\r
+ ASSERT (mCurrentSmramRange->PhysicalSize > SmmCodeSize);\r
+ //\r
+ // Retrieve Load modules At fixed address configuration table and save the SMRAM base.\r
+ //\r
+ Status = EfiGetSystemConfigurationTable (\r
+ &gLoadFixedAddressConfigurationTableGuid,\r
+ (VOID **) &mLMFAConfigurationTable\r
+ );\r
+ if (!EFI_ERROR (Status) && mLMFAConfigurationTable != NULL) {\r
+ mLMFAConfigurationTable->SmramBase = mCurrentSmramRange->CpuStart;\r
+ //\r
+ // Print the SMRAM base\r
+ //\r
+ DEBUG ((EFI_D_INFO, "LOADING MODULE FIXED INFO: TSEG BASE is %x. \n", mLMFAConfigurationTable->SmramBase));\r
+ }\r
\r
+ //\r
+ // Fill the Smram range for all SMM code\r
+ //\r
+ SmramRangeSmmDriver = &gSmmCorePrivate->SmramRanges[gSmmCorePrivate->SmramRangeCount - 2];\r
+ SmramRangeSmmDriver->CpuStart = mCurrentSmramRange->CpuStart;\r
+ SmramRangeSmmDriver->PhysicalStart = mCurrentSmramRange->PhysicalStart;\r
+ SmramRangeSmmDriver->RegionState = mCurrentSmramRange->RegionState | EFI_ALLOCATED;\r
+ SmramRangeSmmDriver->PhysicalSize = SmmCodeSize;\r
+\r
+ mCurrentSmramRange->PhysicalSize -= SmmCodeSize;\r
+ mCurrentSmramRange->CpuStart = mCurrentSmramRange->CpuStart + SmmCodeSize;\r
+ mCurrentSmramRange->PhysicalStart = mCurrentSmramRange->PhysicalStart + SmmCodeSize;\r
+ }\r
//\r
// Load SMM Core into SMRAM and execute it from SMRAM\r
//\r
- Status = ExecuteSmmCoreFromSmram (mCurrentSmramRange, gSmmCorePrivate);\r
+ Status = ExecuteSmmCoreFromSmram (\r
+ mCurrentSmramRange,\r
+ &gSmmCorePrivate->SmramRanges[gSmmCorePrivate->SmramRangeCount - 1],\r
+ gSmmCorePrivate\r
+ );\r
if (EFI_ERROR (Status)) {\r
//\r
// Print error message that the SMM Core failed to be loaded and executed.\r
//\r
// Attempt to reset SMRAM cacheability to UC\r
//\r
- Status = gDS->SetMemorySpaceAttributes(\r
- mCurrentSmramRange->CpuStart, \r
- mCurrentSmramRange->PhysicalSize,\r
- EFI_MEMORY_UC\r
- );\r
- if (EFI_ERROR (Status)) {\r
- DEBUG ((DEBUG_WARN, "SMM IPL failed to reset SMRAM window to EFI_MEMORY_UC\n"));\r
- } \r
+ if (CpuArch != NULL) {\r
+ SetAttrStatus = gDS->SetMemorySpaceAttributes(\r
+ mSmramCacheBase, \r
+ mSmramCacheSize,\r
+ EFI_MEMORY_UC\r
+ );\r
+ if (EFI_ERROR (SetAttrStatus)) {\r
+ DEBUG ((DEBUG_WARN, "SMM IPL failed to reset SMRAM window to EFI_MEMORY_UC\n"));\r
+ } \r
+ }\r
}\r
} else {\r
//\r
// Free all allocated resources\r
//\r
FreePool (gSmmCorePrivate->SmramRanges);\r
- \r
+\r
return EFI_UNSUPPORTED;\r
}\r
\r
if (mSmmIplEvents[Index].Protocol) {\r
mSmmIplEvents[Index].Event = EfiCreateProtocolNotifyEvent (\r
mSmmIplEvents[Index].Guid,\r
- TPL_CALLBACK,\r
+ mSmmIplEvents[Index].NotifyTpl,\r
mSmmIplEvents[Index].NotifyFunction,\r
mSmmIplEvents[Index].NotifyContext,\r
&Registration\r
} else {\r
Status = gBS->CreateEventEx (\r
EVT_NOTIFY_SIGNAL,\r
- TPL_CALLBACK,\r
+ mSmmIplEvents[Index].NotifyTpl,\r
mSmmIplEvents[Index].NotifyFunction,\r
mSmmIplEvents[Index].NotifyContext,\r
mSmmIplEvents[Index].Guid,\r
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