/** @file\r
SMM IPL that produces SMM related runtime protocols and load the SMM Core into SMRAM\r
\r
- Copyright (c) 2009 - 2015, 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 <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
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_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
//\r
{ TRUE, TRUE, &gEfiDxeSmmReadyToLockProtocolGuid, SmmIplReadyToLockEventNotify, &gEfiDxeSmmReadyToLockProtocolGuid, TPL_CALLBACK, NULL },\r
//\r
- // Declare event notification on EndOfDxe event. When this notification is etablished, \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, FALSE, &gEfiEndOfDxeEventGroupGuid, SmmIplGuidedEventNotify, &gEfiEndOfDxeEventGroupGuid, TPL_CALLBACK, NULL },\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
// 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, &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
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
- //\r
- // CommSize must hold HeaderGuid and MessageLength\r
- //\r
- if (*CommSize < OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data)) {\r
- return EFI_INVALID_PARAMETER;\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
// 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
- *CommSize = gSmmCorePrivate->BufferSize;\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
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
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
IN VOID *Context\r
)\r
{\r
- EFI_SMM_COMMUNICATE_HEADER CommunicateHeader;\r
UINTN Size;\r
EFI_STATUS Status;\r
\r
// Clear the buffer passed into the Software SMI. This buffer will return\r
// the status of the SMM Core Dispatcher.\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
// Return if there is no request to restart the SMM Core Dispatcher\r
//\r
- if (CommunicateHeader.Data[0] != COMM_BUFFER_SMM_DISPATCH_RESTART) {\r
+ if (mCommunicateHeader.Data[0] != COMM_BUFFER_SMM_DISPATCH_RESTART) {\r
return;\r
}\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
}\r
\r
/**\r
- Get the fixed loadding address from image header assigned by build tool. This function only be called\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 loadding address.\r
+ @retval EFI_NOT_FOUND The image has no assigned fixed loading address.\r
**/\r
EFI_STATUS\r
GetPeCoffImageFixLoadingAssignedAddress(\r
EFI_STATUS Status;\r
EFI_IMAGE_SECTION_HEADER SectionHeader;\r
EFI_IMAGE_OPTIONAL_HEADER_UNION *ImgHdr;\r
- EFI_PHYSICAL_ADDRESS FixLoaddingAddress;\r
+ EFI_PHYSICAL_ADDRESS FixLoadingAddress;\r
UINT16 Index;\r
UINTN Size;\r
UINT16 NumberOfSections;\r
//\r
SmmCodeSize = EFI_PAGES_TO_SIZE (PcdGet32(PcdLoadFixAddressSmmCodePageNumber));\r
\r
- FixLoaddingAddress = 0;\r
+ FixLoadingAddress = 0;\r
Status = EFI_NOT_FOUND;\r
- SmramBase = mCurrentSmramRange->CpuStart;\r
+ SmramBase = mLMFAConfigurationTable->SmramBase;\r
//\r
// Get PeHeader pointer\r
//\r
ImgHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)((CHAR8* )ImageContext->Handle + ImageContext->PeCoffHeaderOffset);\r
- SectionHeaderOffset = (UINTN)(\r
- ImageContext->PeCoffHeaderOffset +\r
- sizeof (UINT32) +\r
- sizeof (EFI_IMAGE_FILE_HEADER) +\r
- ImgHdr->Pe32.FileHeader.SizeOfOptionalHeader\r
- );\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
// 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 fileds should be set to Zero\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 uild tool saves the\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
- FixLoaddingAddress = (EFI_PHYSICAL_ADDRESS)(SmramBase + (INT64)ValueInSectionHeader);\r
+ FixLoadingAddress = (EFI_PHYSICAL_ADDRESS)(SmramBase + (INT64)ValueInSectionHeader);\r
\r
- if (SmramBase + SmmCodeSize > FixLoaddingAddress && SmramBase <= FixLoaddingAddress) {\r
+ if (SmramBase + SmmCodeSize > FixLoadingAddress && SmramBase <= FixLoadingAddress) {\r
//\r
- // The assigned address is valid. Return the specified loadding address\r
+ // The assigned address is valid. Return the specified loading address\r
//\r
- ImageContext->ImageAddress = FixLoaddingAddress;\r
+ ImageContext->ImageAddress = FixLoadingAddress;\r
Status = EFI_SUCCESS;\r
}\r
}\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", FixLoaddingAddress, Status));\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
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
// 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
- } else {\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
ASSERT (SmramRange->PhysicalSize > EFI_PAGES_TO_SIZE (PageCount));\r
\r
SmramRange->PhysicalSize -= EFI_PAGES_TO_SIZE (PageCount);\r
- DestinationBuffer = SmramRange->CpuStart + SmramRange->PhysicalSize;\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
+ // Align buffer on section boundary\r
//\r
- ImageContext.ImageAddress = DestinationBuffer;\r
+ ImageContext.ImageAddress = SmramRangeSmmCore->CpuStart;\r
}\r
} else {\r
//\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
+ 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
+ // Align buffer on section boundary\r
//\r
- ImageContext.ImageAddress = DestinationBuffer;\r
+ ImageContext.ImageAddress = SmramRangeSmmCore->CpuStart;\r
}\r
\r
ImageContext.ImageAddress += ImageContext.SectionAlignment - 1;\r
- ImageContext.ImageAddress &= ~((EFI_PHYSICAL_ADDRESS)(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
\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
+ SmmConfiguration = NULL;\r
+ Status = gBS->LocateProtocol (&gEfiSmmConfigurationProtocolGuid, NULL, (VOID **) &SmmConfiguration);\r
\r
//\r
- // Always free memory allocted by GetFileBufferByFilePath ()\r
+ // Get SMRAM information.\r
//\r
- FreePool (SourceBuffer);\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_LOAD_FIXED_ADDRESS_CONFIGURATION_TABLE *LMFAConfigurationTable;\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
-\r
- //\r
- // Save a full copy\r
- //\r
- gSmmCorePrivate->FullSmramRangeCount = gSmmCorePrivate->SmramRangeCount;\r
- gSmmCorePrivate->FullSmramRanges = (EFI_SMRAM_DESCRIPTOR *) AllocatePool (Size);\r
- ASSERT (gSmmCorePrivate->FullSmramRanges != NULL);\r
- CopyMem (gSmmCorePrivate->FullSmramRanges, gSmmCorePrivate->SmramRanges, Size);\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 256KB - 4K in size\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
//\r
Status = EfiGetSystemConfigurationTable (\r
&gLoadFixedAddressConfigurationTableGuid,\r
- (VOID **) &LMFAConfigurationTable\r
+ (VOID **) &mLMFAConfigurationTable\r
);\r
- if (!EFI_ERROR (Status) && LMFAConfigurationTable != NULL) {\r
- LMFAConfigurationTable->SmramBase = mCurrentSmramRange->CpuStart;\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", LMFAConfigurationTable->SmramBase));\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
// Free all allocated resources\r
//\r
FreePool (gSmmCorePrivate->SmramRanges);\r
- FreePool (gSmmCorePrivate->FullSmramRanges);\r
\r
return EFI_UNSUPPORTED;\r
}\r
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