diff options
Diffstat (limited to 'Core/EM/TCG2/Common/TcgTcmPei.c')
| -rw-r--r-- | Core/EM/TCG2/Common/TcgTcmPei.c | 476 |
1 files changed, 476 insertions, 0 deletions
diff --git a/Core/EM/TCG2/Common/TcgTcmPei.c b/Core/EM/TCG2/Common/TcgTcmPei.c new file mode 100644 index 0000000..ec48285 --- /dev/null +++ b/Core/EM/TCG2/Common/TcgTcmPei.c @@ -0,0 +1,476 @@ +//************************************************************************* +// $Header: /Alaska/SOURCE/Modules/TCG2/Common/TcgPei/TcgTcmPei.c 1 4/21/14 2:16p Fredericko $ +// +// $Revision: 1 $ +// +// $Date: 4/21/14 2:16p $ +//************************************************************************* +// Revision History +// ---------------- +// $Log: /Alaska/SOURCE/Modules/TCG2/Common/TcgPei/TcgTcmPei.c $ +// +// 1 4/21/14 2:16p Fredericko +// +// 1 10/08/13 12:02p Fredericko +// Initial Check-In for Tpm-Next module +// +// 2 10/03/13 1:54p Fredericko +// +// 1 7/10/13 5:51p Fredericko +// [TAG] EIP120969 +// [Category] New Feature +// [Description] TCG (TPM20) +// +// 4 4/27/12 6:04p Fredericko +// remove unused functions +// +// 3 4/01/11 9:33a Fredericko +// Updated function Header +// +// 2 3/29/11 12:58p Fredericko +// +// 1 3/28/11 2:14p Fredericko +// [TAG] EIP 54642 +// [Category] Improvement +// [Description] 1. Checkin Files related to TCG function +// 2. Include TCM and TPM auto detection +// [Files] Affects all TCG files +// +// 51 11/30/10 11:31p Fredericko +// [TAG} EIP45885 +// [Category] NEW FEATURE +// [Description] Provide hook to override Ppi request confirmation +// [Files] TCGMisc.h, xTcgDxe.c, TcgPei.c +// +// 50 8/04/10 5:16p Fredericko +// Changes to flow of Lock Physical Presence for support Smi PPI changes +// +// 49 5/21/10 4:31p Fredericko +// Changes for some build errors that happened with MOR support +// +// 48 5/19/10 5:51p Fredericko +// Updated AMI Function Headers +// Code Beautification +// EIP 37653 +// +//************************************************************************* +//************************************************************************* +//<AMI_FHDR_START> +// +// Name: TcgPei.c +// +// Description: +// Functions for early initialization of TPM are executed here +// +//<AMI_FHDR_END> +//************************************************************************* +#include <Efi.h> +#include "TcgCommon.h" +#include <AmiPeiLib.h> +#include <Sha.h> +#include <TcgMisc.h> +#include <token.h> +#include <TcgPc.h> +#include "PPI\TcgService\TcgTcmService.h" +#include "PPI\TcgService\TcgService.h" +#include "PPI\TpmDevice\TpmDevice.h" +#include "PPI\CpuIo.h" +#include "PPI\LoadFile.h" +#include <FFS.h> + + +//********************************************************************* +// GLOBAL DEFINITIONS +//********************************************************************* + +EFI_GUID gPeiTcmPpiGuid = PEI_TPM_PPI_GUID; +EFI_GUID gPeiTcgTcmPpiGuid = PEI_TCG_PPI_GUID; + +#pragma pack(1) +typedef struct _TCG_PEI_CALLBACK_CONTEXT +{ + PEI_TPM_PPI *TpmDevice; + EFI_PEI_SERVICES **PeiServices; +} TCG_PEI_CALLBACK_CONTEXT; +#pragma pack() + +EFI_GUID gEfiPeiAmiTcmTcgLogHobGuid = EFI_TCG_LOG_HOB_GUID; + +EFI_STATUS +EFIAPI TcmPeiLogEvent( + IN PEI_TCM_PPI *This, + IN EFI_PEI_SERVICES **PeiServices, + IN TCM_PCR_EVENT *Event, + OUT UINT32 *EventNum ); + +EFI_STATUS +EFIAPI TcgPeiHashLogExtendEventTcm( + IN PEI_TCM_PPI *This, + IN EFI_PEI_SERVICES **PeiServices, + IN UINT8 *HashData, + IN UINT32 HashDataLen, + IN OUT TCM_PCR_EVENT *NewEvent, + OUT UINT32 *EventNum ); + + +static +EFI_STATUS +__stdcall FillCallbackContext( + IN EFI_PEI_SERVICES **PeiService, + OUT TCG_PEI_CALLBACK_CONTEXT *CallbackContext ) +{ + CallbackContext->PeiServices = PeiService; + return (*PeiService)->LocatePpi( + PeiService, + &gPeiTcmPpiGuid, + 0, + NULL, + &CallbackContext->TpmDevice + ); +} + + + +//********************************************************************** +//<AMI_PHDR_START> +// +// Procedure: TcmPeiGetEventLog +// +// Description: Helper function for logging TCM events +// +// Input: IN EFI_PEI_SERVICES **PeiServices, +// OUT TCG_LOG_HOB **EventLog +// +// Output: EFI_STATUS +// +// Modified: +// +// Referrals: +// +// Notes: +//<AMI_PHDR_END> +//********************************************************************** +EFI_STATUS +EFIAPI TcmPeiGetEventLog( + IN EFI_PEI_SERVICES **PeiServices, + OUT TCG_LOG_HOB **EventLog ) +{ + EFI_STATUS Status; + VOID *HobStart; + EFI_GUID gEfiPeiAmiTcgLogHobGuid = EFI_TCG_LOG_HOB_GUID; + + Status = (*PeiServices)->GetHobList( PeiServices, &HobStart ); + + if ( EFI_ERROR( Status )) + { + return Status; + } + + return GetNextGuidHob( &HobStart, &gEfiPeiAmiTcgLogHobGuid, EventLog, NULL ); +} + + +//********************************************************************** +//<AMI_PHDR_START> +// +// Name: TcgPeiPassThroughToTpm +// +// Description: TCGPEI common function to abstract passing commands to the TPM +// FIFO +// +// Input: IN *This +// IN **PeiServices +// IN TpmInputParameterBlockSize +// IN *TpmInputParameterBlock +// IN TpmOutputParameterBlockSize +// IN *TpmOutputParameterBlock +// +// Output: EFI STATUS +// +// Modified: +// +// Referrals: +// +// Notes: +//<AMI_PHDR_END> +//********************************************************************** +EFI_STATUS +EFIAPI TcgPeiPassThroughToTpm( + IN PEI_TCM_PPI *This, + IN EFI_PEI_SERVICES **PeiServices, + IN UINT32 TpmInputParameterBlockSize, + IN UINT8 *TpmInputParameterBlock, + IN UINT32 TpmOutputParameterBlockSize, + IN UINT8 *TpmOutputParameterBlock ); + + + +static PEI_TCM_PPI mTcmPpi = { + TcgPeiHashLogExtendEventTcm, + TcmPeiLogEvent, + TcgPeiPassThroughToTpm +}; + + +static EFI_PEI_PPI_DESCRIPTOR mTcgPpiList[] = { + { + EFI_PEI_PPI_DESCRIPTOR_PPI + | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST, + &gPeiTcgTcmPpiGuid, + &mTcmPpi + } +}; + + +//********************************************************************** +//<AMI_PHDR_START> +// +// Procedure: IntTcmTcgPeiGetCapabilities +// +// Description: Executes TCM operation to read capabilities +// +// +// Input: IN EFI_PEI_SERVICES **PeiServices, +// +// Output: TCM_Capabilities_PermanentFlag +// +// Modified: +// +// Referrals: +// +// Notes: +//<AMI_PHDR_END> +//********************************************************************** +TCM_Capabilities_PermanentFlag IntTcmTcgPeiGetCapabilities( + IN EFI_PEI_SERVICES **PeiServices ) +{ + TCM_Capabilities_PermanentFlag * cap = NULL; + EFI_STATUS Status; + TPM_GetCapabilities_Input cmdGetCap; + UINT8 result[0x100]; + + TCG_PEI_CALLBACK_CONTEXT Context; + + cmdGetCap.Tag = TPM_H2NS( TPM_TAG_RQU_COMMAND ); + cmdGetCap.ParamSize = TPM_H2NL( sizeof (cmdGetCap)); + cmdGetCap.CommandCode = TPM_H2NL( TCM_ORD_GetCapability ); + cmdGetCap.caparea = TPM_H2NL( TPM_CAP_FLAG ); + cmdGetCap.subCapSize = TPM_H2NL( 4 ); // subCap is always 32bit long + cmdGetCap.subCap = TPM_H2NL( TPM_CAP_FLAG_PERMANENT ); + + Status = FillCallbackContext( PeiServices, &Context ); + + ASSERT_PEI_ERROR( PeiServices, Status ); + + Status = Context.TpmDevice->Init( Context.TpmDevice, PeiServices ); + ASSERT_PEI_ERROR( PeiServices, Status ); + + Status = TcgPeiPassThroughToTpm( + &mTcmPpi, + PeiServices, + sizeof(cmdGetCap), + (UINT8*)&cmdGetCap, + 0x100, + result ); + + cap = (TCM_Capabilities_PermanentFlag*)result; + + PEI_TRACE((-1, PeiServices, + "GetCapability: %r; size: %x; retCode:%x; tag:%x; bytes %08x\n", + Status,TPM_H2NL( cap->ParamSize ), TPM_H2NL(cap->RetCode ), + (UINT32)TPM_H2NS(cap->tag ), TPM_H2NL( *(UINT32*)&cap->disabled ))); + + Status = Context.TpmDevice->Close( Context.TpmDevice, PeiServices ); + ASSERT_PEI_ERROR( PeiServices, Status ); + + return *cap; +} + + +//********************************************************************** +//<AMI_PHDR_START> +// Name: TcmPeiLogEvent +// +// Description: TCM common function to log PEI events +// +// Input: IN *This +// IN **PeiServices +// IN *Event, +// IN *EventNum +// +// Output: EFI STATUS +// +// Modified: +// +// Referrals: +// +// Notes: +//<AMI_PHDR_END> +//********************************************************************* +EFI_STATUS +EFIAPI TcmPeiLogEvent( + IN PEI_TCM_PPI *This, + IN EFI_PEI_SERVICES **PeiServices, + IN TCM_PCR_EVENT *Event, + OUT UINT32 *EventNum ) +{ + EFI_STATUS Status = EFI_SUCCESS; + TCG_LOG_HOB *TcgLog; + TCG_PEI_CALLBACK_CONTEXT Context; + TCM_Capabilities_PermanentFlag Cap; + + //only log events if TPM is not deactivated + Cap = IntTcmTcgPeiGetCapabilities( PeiServices ); + + if ( !Cap.deactivated ) + { + Status = FillCallbackContext( PeiServices, &Context ); + ASSERT_PEI_ERROR( PeiServices, Status ); + + Status = TcmPeiGetEventLog(PeiServices, &TcgLog ); + + if ( EFI_ERROR( Status )) + { + goto Exit; + } + + Status = TcmCommonLogEvent( + &Context, + (TCM_PCR_EVENT*)(TcgLog + 1), + &TcgLog->TableSize, + TcgLog->TableMaxSize, + (TCM_PCR_EVENT *)Event + ); + + if ( EFI_ERROR( Status )) + { + goto Exit; + } + + *EventNum = TcgLog->EventNum; + TcgLog->EventNum++; + } +Exit: + return Status; +} + + + +//********************************************************************** +//<AMI_PHDR_START> +// Name: TcgPeiHashLogExtendEventTcm +// +// Description: Tcm common function to Hash, Log and Extend data +// +// Input: IN *This +// IN **PeiServices +// IN *HashData +// IN HashDataLen +// IN *NewEvent, +// IN *EventNum +// +// Output: EFI STATUS +// +// Modified: +// +// Referrals: +// +// Notes: +//<AMI_PHDR_END> +//********************************************************************* +EFI_STATUS +EFIAPI TcgPeiHashLogExtendEventTcm( + IN PEI_TCM_PPI *This, + IN EFI_PEI_SERVICES **PeiServices, + IN UINT8 *HashData, + IN UINT32 HashDataLen, + IN OUT TCM_PCR_EVENT *NewEvent, + OUT UINT32 *EventNum ) +{ + EFI_STATUS Status; + UINT32 Sha1MaxBytes; + TCM_DIGEST NewPCRValue; + TCG_PEI_CALLBACK_CONTEXT Context; + + Status = FillCallbackContext( PeiServices, &Context ); + ASSERT_PEI_ERROR( PeiServices, Status ); + + if ( EFI_ERROR( Status )) + { + goto Exit; + } + + Status = TcgCommonSha1Start( &Context, TCG_ALG_SHA, &Sha1MaxBytes ); + + if ( EFI_ERROR( Status )) + { + goto Exit; + } + + Status = TcgCommonSha1Update( + &Context, + HashData, + HashDataLen, + Sha1MaxBytes + ); + + if ( EFI_ERROR( Status )) + { + goto Exit; + } + + HashData += (HashDataLen & ~63); + HashDataLen &= 63; + + Status = TcmCommonSha1CompleteExtend( + &Context, + HashData, + HashDataLen, + NewEvent->PCRIndex, + &NewEvent->Digest, + &NewPCRValue + ); + + if ( EFI_ERROR( Status )) + { + goto Exit; + } + + Status = TcmPeiLogEvent( This, PeiServices, NewEvent, EventNum ); + +Exit: + return Status; +} + + + +//********************************************************************** +//<AMI_PHDR_START> +// +// Procedure: TcgTcmPeiEntry +// +// Description: Entry point for TCM device initialization +// +// +// Input: IN EFI_FFS_FILE_HEADER *FfsHeader +// IN EFI_PEI_SERVICES **PeiServices, +// +// Output: EFI_STATUS +// +// Modified: +// +// Referrals: +// +// Notes: +//<AMI_PHDR_END> +//********************************************************************** +EFI_STATUS +EFIAPI TcgTcmPeiEntry( + IN EFI_FFS_FILE_HEADER *FfsHeader, + IN EFI_PEI_SERVICES **PeiServices ) +{ + EFI_STATUS Status; + + Status = (*PeiServices)->InstallPpi( PeiServices, mTcgPpiList ); + return Status; +} |