/** @file\r
SMM IPL that produces SMM related runtime protocols and load the SMM Core into SMRAM\r
\r
- Copyright (c) 2009 - 2016, 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
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
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
\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
}\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
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
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
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