diff options
Diffstat (limited to 'Board/EM/TCG2/Common/Tpm20Acpi/Tpm20Acpi.c')
| -rw-r--r-- | Board/EM/TCG2/Common/Tpm20Acpi/Tpm20Acpi.c | 373 |
1 files changed, 373 insertions, 0 deletions
diff --git a/Board/EM/TCG2/Common/Tpm20Acpi/Tpm20Acpi.c b/Board/EM/TCG2/Common/Tpm20Acpi/Tpm20Acpi.c new file mode 100644 index 0000000..6d12019 --- /dev/null +++ b/Board/EM/TCG2/Common/Tpm20Acpi/Tpm20Acpi.c @@ -0,0 +1,373 @@ +//************************************************************************* +//************************************************************************* +//** ** +//** (C)Copyright 1985-2010, American Megatrends, Inc. ** +//** ** +//** All Rights Reserved. ** +//** ** +//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 ** +//** ** +//** Phone: (770)-246-8600 ** +//** ** +//************************************************************************* +//************************************************************************* +//************************************************************************* +// $Header: /Alaska/SOURCE/Modules/TCG2/Common/Tpm20PlatformDxe/Tpm20Acpi/Tpm20Acpi.c 2 4/21/14 3:18p Fredericko $ +// +// $Revision: 2 $ +// +// $Date: 4/21/14 3:18p $ +//************************************************************************* +// Revision History +// ---------------- +// $Log: /Alaska/SOURCE/Modules/TCG2/Common/Tpm20PlatformDxe/Tpm20Acpi/Tpm20Acpi.c $ +// +// 2 4/21/14 3:18p Fredericko +// +// 1 4/21/14 2:19p Fredericko +// +// 1 10/08/13 12:06p Fredericko +// Initial Check-In for Tpm-Next module +// +// 2 10/03/13 3:01p Fredericko +// +// 1 7/10/13 5:58p Fredericko +// [TAG] EIP120969 +// [Category] New Feature +// [Description] TCG (TPM20) +//************************************************************************* +//<AMI_FHDR_START> +// +// Name: +// +// Description: +// +//<AMI_FHDR_END> +//************************************************************************* + +#include "Tpm20Acpi.h" +#include <Token.h> +#include <AmiDxeLib.h> +#include "Tpm20CRBLib.h" + + +EFI_TPM2_ACPI_TABLE mTpm2AcpiTemplate = { + { + EFI_ACPI_5_0_TRUSTED_COMPUTING_PLATFORM_2_TABLE_SIGNATURE, + sizeof (mTpm2AcpiTemplate), + EFI_TPM2_ACPI_TABLE_REVISION, + // + // initialize to 0 + // + // + }, + 0, // Flags + (EFI_PHYSICAL_ADDRESS)(UINTN)0xFFFFFFFF, // Control Area + EFI_TPM2_ACPI_TABLE_START_METHOD_ACPI, +}; + + + + +//********************************************************************** +//<AMI_PHDR_START> +// +// Procedure: GetHob +// +// Description: Find instance of a HOB type in a HOB list +// +// Input: +// Type The HOB type to return. +// HobStart The first HOB in the HOB list. +// +// Output: +// Pointer to the Hob matching the type or NULL +// +// Modified: +// +// Referrals: +// +// Notes: +//<AMI_PHDR_END> +//********************************************************************** +VOID* GetHob( + IN UINT16 Type, + IN VOID *HobStart ) +{ + EFI_PEI_HOB_POINTERS Hob; + + Hob.Raw = HobStart; + + // + // Return input if not found + // + if ( HobStart == NULL ) + { + return HobStart; + } + + // + // Parse the HOB list, stop if end of list or matching type found. + // + while ( !END_OF_HOB_LIST( Hob )) + { + if ( Hob.Header->HobType == Type ) + { + break; + } + + Hob.Raw = GET_NEXT_HOB( Hob ); + } + + // + // Return input if not found + // + if ( END_OF_HOB_LIST( Hob )) + { + return HobStart; + } + + return (VOID*)(Hob.Raw); +} + +//********************************************************************** +//<AMI_PHDR_START> +// +// Procedure: CompareGuid +// +// Description: Compares two input GUIDs +// +// Input: Comparision status +// +// Output: None +// +// Modified: +// +// Referrals: +// +// Notes: +//<AMI_PHDR_END> +//********************************************************************** +BOOLEAN CompareGuid( + EFI_GUID *G1, + EFI_GUID *G2 ) +{ + UINT32 *p1 = (UINT32*)G1, *p2 = (UINT32*)G2; + UINTN i; + + for ( i = 0; i < 4; ++i ) + { + if ( p1[i] != p2[i] ) + { + return FALSE; + } + } + return TRUE; + ; +} + +//********************************************************************** +//<AMI_PHDR_START> +// +// Procedure: GetNextGuidHob +// +// Description: Find GUID HOB +// +// Input: HobStart A pointer to the start hob. +// Guid A pointer to a guid. +// Output: +// Buffer A pointer to the buffer. +// BufferSize Buffer size. +// +// Modified: +// +// Referrals: +// +// Notes: +//<AMI_PHDR_END> +//********************************************************************** +EFI_STATUS GetNextGuidHob( + IN OUT VOID **HobStart, + IN EFI_GUID * Guid, + OUT VOID **Buffer, + OUT UINTN *BufferSize OPTIONAL ) +{ + EFI_STATUS Status; + EFI_PEI_HOB_POINTERS GuidHob; + + if ( Buffer == NULL ) + { + return EFI_INVALID_PARAMETER; + } + + for ( Status = EFI_NOT_FOUND; EFI_ERROR( Status );) + { + GuidHob.Raw = *HobStart; + + if ( END_OF_HOB_LIST( GuidHob )) + { + return EFI_NOT_FOUND; + } + + GuidHob.Raw = GetHob( EFI_HOB_TYPE_GUID_EXTENSION, *HobStart ); + + if ( GuidHob.Header->HobType == EFI_HOB_TYPE_GUID_EXTENSION ) + { + if ( CompareGuid( Guid, &GuidHob.Guid->Name )) + { + Status = EFI_SUCCESS; + *Buffer = (VOID*)((UINT8*)(&GuidHob.Guid->Name) + + sizeof (EFI_GUID)); + + if ( BufferSize != NULL ) + { + *BufferSize = GuidHob.Header->HobLength + - sizeof (EFI_HOB_GUID_TYPE); + } + } + } + + *HobStart = GET_NEXT_HOB( GuidHob ); + } + + return Status; +} + + + +VOID* FindHob( + IN UINTN NoTableEntries, + IN EFI_CONFIGURATION_TABLE *ConfigTable, + IN EFI_GUID *HOB_guid ) +{ + VOID *HobStart; + VOID *PtrHob; + EFI_GUID Hoblistguid = HOB_LIST_GUID; + + while ( NoTableEntries > 0 ) + { + NoTableEntries--; + + if ((!MemCmp( + &ConfigTable[NoTableEntries].VendorGuid, + &Hoblistguid, sizeof(EFI_GUID) + ))) + { + HobStart = ConfigTable[NoTableEntries].VendorTable; + + if ( !EFI_ERROR( + GetNextGuidHob( &HobStart, HOB_guid, &PtrHob, NULL ) + )) + { + TRACE ((TRACE_ALWAYS, "Hob found = %x \n", PtrHob)); + return PtrHob; + } + } + } + return NULL; +} + + + +EFI_STATUS +Tpm20PublishAcpiTable ( + VOID + ) +{ + EFI_STATUS Status; + UINTN TableKey = 0; + EFI_ACPI_TABLE_PROTOCOL *AcpiTable; + EFI_TPM2_ACPI_CONTROL_AREA *CtrlAreaMap = NULL; + EFI_GUID Meguid = ME_DATA_HOB_GUID; + INTEL_PTT_HOB_DATA *StolenAddress = NULL; + + mTpm2AcpiTemplate.Header.OemRevision = TPM20TABLEOEMREVISION; + mTpm2AcpiTemplate.Header.CreatorId = CREATOR_ID_AMI; + mTpm2AcpiTemplate.Header.OemTableId = EFI_SIGNATURE_64 ('T', 'p', 'm', '2', 'T', 'a', 'b', 'l'); + + // + // Publish the TPM ACPI table + // + Status = pBS->LocateProtocol (&gEfiAcpiTableProtocolGuid, NULL, (VOID **) &AcpiTable); + if(EFI_ERROR(Status))return Status; + + if(!isTpm20CrbPresent()) + { + mTpm2AcpiTemplate.AddressOfControlArea = 0; + mTpm2AcpiTemplate.StartMethod = 6; + }else{ + + StolenAddress = (INTEL_PTT_HOB_DATA *)FindHob ( pST->NumberOfTableEntries, + pST->ConfigurationTable, + &Meguid); + + if(StolenAddress != 0){ + if(((UINTN)((UINT64 *)StolenAddress->BufferAddress)) != 0){ + mTpm2AcpiTemplate.AddressOfControlArea = StolenAddress->BufferAddress; + }else{ + mTpm2AcpiTemplate.AddressOfControlArea = TPM20_CRBBASE; + } + }else{ + mTpm2AcpiTemplate.AddressOfControlArea = TPM20_CRBBASE; + } + + mTpm2AcpiTemplate.StartMethod = 2; + CtrlAreaMap = (EFI_TPM2_ACPI_CONTROL_AREA *)(UINTN) mTpm2AcpiTemplate.AddressOfControlArea; + MemSet (CtrlAreaMap, sizeof(EFI_TPM2_ACPI_CONTROL_AREA), 0); + CtrlAreaMap->CommandSize = 0xF80; + CtrlAreaMap->ResponseSize = 0xF80; + CtrlAreaMap->Command = (UINTN)mTpm2AcpiTemplate.AddressOfControlArea + 0x80; + CtrlAreaMap->Response = (UINTN)mTpm2AcpiTemplate.AddressOfControlArea + 0x80; + + TRACE ((TRACE_ALWAYS, "Ftpm Windows Buffer Control Area Address = %x\n", mTpm2AcpiTemplate.AddressOfControlArea)); + TRACE ((TRACE_ALWAYS, "Ftpm Windows Command/Response Buffer Address = %x\n", CtrlAreaMap->Command)); + } + + TRACE ((TRACE_ALWAYS, " Before Installation of ACPI table \n")); + Status = AcpiTable->InstallAcpiTable (AcpiTable, + &mTpm2AcpiTemplate, + sizeof(EFI_TPM2_ACPI_TABLE), + &TableKey); + + if(EFI_ERROR(Status))return Status; + + return Status; +} + + +EFI_STATUS +EFIAPI +Tpm20AcpiInitEntry ( + IN EFI_HANDLE ImageHandle, + IN EFI_SYSTEM_TABLE *SystemTable +) +{ + EFI_STATUS Status; + + InitAmiLib( ImageHandle, SystemTable ); + + Status = Tpm20PublishAcpiTable (); + + return Status; +} + + + + + + + + +//************************************************************************* +//************************************************************************* +//** ** +//** (C)Copyright 1985-2010, American Megatrends, Inc. ** +//** ** +//** All Rights Reserved. ** +//** ** +//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 ** +//** ** +//** Phone: (770)-246-8600 ** +//** ** +//************************************************************************* +//************************************************************************* |