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Diffstat (limited to 'ReferenceCode/Haswell/SampleCode/TxtOneTouch/Dxe/TxtOneTouchOp.c')
| -rw-r--r-- | ReferenceCode/Haswell/SampleCode/TxtOneTouch/Dxe/TxtOneTouchOp.c | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/ReferenceCode/Haswell/SampleCode/TxtOneTouch/Dxe/TxtOneTouchOp.c b/ReferenceCode/Haswell/SampleCode/TxtOneTouch/Dxe/TxtOneTouchOp.c new file mode 100644 index 0000000..860e90d --- /dev/null +++ b/ReferenceCode/Haswell/SampleCode/TxtOneTouch/Dxe/TxtOneTouchOp.c @@ -0,0 +1,178 @@ +/** @file + +@copyright + Copyright (c) 1999 - 2012 Intel Corporation. All rights reserved + This software and associated documentation (if any) is furnished + under a license and may only be used or copied in accordance + with the terms of the license. Except as permitted by such + license, no part of this software or documentation may be + reproduced, stored in a retrieval system, or transmitted in any + form or by any means without the express written consent of + Intel Corporation. + + This file contains a 'Sample Driver' and is licensed as such + under the terms of your license agreement with Intel or your + vendor. This file may be modified by the user, subject to + the additional terms of the license agreement +**/ +#include "TxtOneTouchDxe.h" +#include "Tpm12.h" +#include "CpuIa32.h" + +extern EFI_TCG_PROTOCOL *mTcgProtocol; + +/** + Execute TPM command + + @param[in] TcgProtocol - Point to EFI_TCG_PROTOCOL + @param[in] Ordinal - TPM Command code + @param[in] AdditionalParameterSize - Size of additional parameters + @param[in] AdditionalParameters - Point to the buffer saves additional parameters + + @retval EFI_SUCCESS - TPM command lunch success + @retval TPM_PP_BIOS_FAILURE - BIOS fail to execute TPM command +**/ +TPM_RESULT +TpmCommandNoReturnData ( + IN EFI_TCG_PROTOCOL *TcgProtocol, + IN TPM_COMMAND_CODE Ordinal, + IN UINTN AdditionalParameterSize, + IN VOID *AdditionalParameters + ) +{ + EFI_STATUS Status; + TPM_RQU_COMMAND_HDR *TpmRqu; + TPM_RSP_COMMAND_HDR TpmRsp; + UINT32 Size; + + TpmRqu = (TPM_RQU_COMMAND_HDR *) AllocatePool (sizeof (*TpmRqu) + AdditionalParameterSize); + if (TpmRqu == NULL) { + return TPM_PP_BIOS_FAILURE; + } + + TpmRqu->tag = H2NS (TPM_TAG_RQU_COMMAND); + Size = (UINT32) (sizeof (*TpmRqu) + AdditionalParameterSize); + TpmRqu->paramSize = H2NL (Size); + TpmRqu->ordinal = H2NL (Ordinal); + CopyMem (TpmRqu + 1, AdditionalParameters, AdditionalParameterSize); + + Status = TcgProtocol->PassThroughToTpm ( + TcgProtocol, + Size, + (UINT8 *) TpmRqu, + (UINT32) sizeof (TpmRsp), + (UINT8 *) &TpmRsp + ); + FreePool (TpmRqu); + if (EFI_ERROR (Status) || (TpmRsp.tag != H2NS (TPM_TAG_RSP_COMMAND))) { + return TPM_PP_BIOS_FAILURE; + } + + return H2NL (TpmRsp.returnCode); +} + +/** + Enable/Active TPM + + @param[in] Command - The operation code for TxT One Touch function + + @retval EFI_SUCCESS - TPM command lunch success + @retval EFI_UNSUPPORTED - The Command is not supported + @retval EFI_DEVICE_ERROR - Faile to lunch TPM command +**/ +EFI_STATUS +TpmEnableActive ( + IN UINT8 Command + ) +{ + TPM_RESULT TpmResponse; + EFI_STATUS Status; + BOOLEAN BoolVal; + + BoolVal = FALSE; + TpmResponse = 0; + Status = EFI_SUCCESS; + + switch (Command) { + case ENABLE: + TpmResponse = TpmCommandNoReturnData ( + mTcgProtocol, + TPM_ORD_PhysicalEnable, + 0, + NULL + ); + break; + + case ACTIVATE: + BoolVal = FALSE; + TpmResponse = TpmCommandNoReturnData ( + mTcgProtocol, + TPM_ORD_PhysicalSetDeactivated, + sizeof (BoolVal), + &BoolVal + ); + break; + + case ENABLE_ACTIVATE: + Status = TpmEnableActive (ENABLE); + if (Status == EFI_SUCCESS) { + Status = TpmEnableActive (ACTIVATE); + } + + return Status; + + default: + Status = EFI_UNSUPPORTED; + break; + } + + if (TpmResponse != 0) { + Status = EFI_DEVICE_ERROR; + } + + return Status; +} + +/** + Verify the status of Chipset capaibility and Setup settings + + @param[in] Data - Point to TXT_ONE_TOUCH_SETUP + + @exception EFI_UNSUPPORTED - The system is not able to lunch TxT + @retval EFI_SUCCESS - The system is able to lunch TxT +**/ +EFI_STATUS +ValidateTxtStates ( + IN TXT_ONE_TOUCH_SETUP *Data + ) +{ + EFI_CPUID_REGISTER CpuidRegs; + + AsmCpuid ( + 1, + &CpuidRegs.RegEax, + &CpuidRegs.RegEbx, + &CpuidRegs.RegEcx, + &CpuidRegs.RegEdx + ); + + if (Data->VtEnable) { + /// + /// Check if VMX supported + /// + if ((CpuidRegs.RegEcx & 0x020) == 0) { + return EFI_UNSUPPORTED; + } + } + + if (Data->TxtEnable) { + /// + /// Check if TxT & VMX supported + /// + if ((CpuidRegs.RegEcx & 0x060) == 0) { + return EFI_UNSUPPORTED; + } + } + + return EFI_SUCCESS; +} |