\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/DxeServicesTableLib.h>\r
#include <Library/UefiLib.h>\r
#include <Library/UefiRuntimeLib.h>\r
+#include <Library/PcdLib.h>\r
\r
#include "PiSmmCorePrivateData.h"\r
\r
\r
return NULL;\r
}\r
+/**\r
+ Get the fixed loadding 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
+**/\r
+EFI_STATUS\r
+GetPeCoffImageFixLoadingAssignedAddress(\r
+ IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext\r
+ )\r
+{\r
+ UINTN SectionHeaderOffset;\r
+ EFI_STATUS Status;\r
+ EFI_IMAGE_SECTION_HEADER SectionHeader;\r
+ EFI_IMAGE_OPTIONAL_HEADER_UNION *ImgHdr;\r
+ EFI_PHYSICAL_ADDRESS FixLoaddingAddress;\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
+ FixLoaddingAddress = 0;\r
+ Status = EFI_NOT_FOUND;\r
+ SmramBase = mCurrentSmramRange->CpuStart;\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
+ 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 fileds 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
+ // offset to SMRAM base as image base in PointerToRelocations & PointerToLineNumbers fields\r
+ //\r
+ FixLoaddingAddress = (EFI_PHYSICAL_ADDRESS)(SmramBase + (INT64)ValueInSectionHeader);\r
+\r
+ if (SmramBase + SmmCodeSize > FixLoaddingAddress && SmramBase <= FixLoaddingAddress) {\r
+ //\r
+ // The assigned address is valid. Return the specified loadding address\r
+ //\r
+ ImageContext->ImageAddress = FixLoaddingAddress;\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", FixLoaddingAddress, Status));\r
+ return Status;\r
+}\r
/**\r
Load the SMM Core image into SMRAM and executes the SMM Core from SMRAM.\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
+ } 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(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
+ DestinationBuffer = SmramRange->CpuStart + SmramRange->PhysicalSize;\r
\r
- //\r
- // Align buffer on section boundry\r
- //\r
- ImageContext.ImageAddress = DestinationBuffer;\r
+ //\r
+ // Align buffer on section boundry\r
+ //\r
+ ImageContext.ImageAddress = DestinationBuffer;\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(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
+ DestinationBuffer = SmramRange->CpuStart + SmramRange->PhysicalSize;\r
+\r
+ //\r
+ // Align buffer on section boundry\r
+ //\r
+ ImageContext.ImageAddress = DestinationBuffer;\r
+ }\r
+ \r
ImageContext.ImageAddress += ImageContext.SectionAlignment - 1;\r
ImageContext.ImageAddress &= ~(ImageContext.SectionAlignment - 1);\r
\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
\r
//\r
// Fill in the image handle of the SMM IPL so the SMM Core can use this as the \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 **) &LMFAConfigurationTable\r
+ );\r
+ if (!EFI_ERROR (Status) && LMFAConfigurationTable != NULL) {\r
+ LMFAConfigurationTable->SmramBase = mCurrentSmramRange->CpuStart;\r
+ }\r
+ //\r
+ // Print the SMRAM base\r
+ //\r
+ DEBUG ((EFI_D_INFO, "LOADING MODULE FIXED INFO: TSEG BASE is %x. \n", LMFAConfigurationTable->SmramBase));\r
+ }\r
//\r
// Load SMM Core into SMRAM and execute it from SMRAM\r
//\r
projects / mirror_edk2.git / blobdiff