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Diffstat (limited to 'ReferenceCode/Haswell/SampleCode/TxtOneTouch/Dxe/TxtOneTouchDxe.c')
| -rw-r--r-- | ReferenceCode/Haswell/SampleCode/TxtOneTouch/Dxe/TxtOneTouchDxe.c | 631 |
1 files changed, 631 insertions, 0 deletions
diff --git a/ReferenceCode/Haswell/SampleCode/TxtOneTouch/Dxe/TxtOneTouchDxe.c b/ReferenceCode/Haswell/SampleCode/TxtOneTouch/Dxe/TxtOneTouchDxe.c new file mode 100644 index 0000000..9c7efae --- /dev/null +++ b/ReferenceCode/Haswell/SampleCode/TxtOneTouch/Dxe/TxtOneTouchDxe.c @@ -0,0 +1,631 @@ +/** @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" + +TXT_ONE_TOUCH_OP_PROTOCOL mTxtOneTouchOpProtocol = { + TxtExecOperation, + TxtConfirmationDialog, + TxtResetState +}; + +EFI_TCG_PROTOCOL *mTcgProtocol; +TXT_ONE_TOUCH_SETUP mTxtVariable; + +/** + @param[in] ImageHandle - A handle for this module + @param[in] SystemTable - A pointer to the EFI System Table + + @retval EFI_SUCCESS - If TXT initialization succeed + @retval EFI_UNLOAD_IMAGE - If TXT criterias are not met +**/ +EFI_STATUS +EFIAPI +DriverEntry ( + IN EFI_HANDLE ImageHandle, + IN EFI_SYSTEM_TABLE *SystemTable + ) +{ + EFI_STATUS Status; + EFI_HANDLE Handle; + + Handle = NULL; + ZeroMem (&mTxtVariable, sizeof (TXT_ONE_TOUCH_SETUP)); + + /// + /// Install the protocol + /// + Status = gBS->InstallProtocolInterface ( + &Handle, + &gTxtOneTouchOpProtocolGuid, + EFI_NATIVE_INTERFACE, + &mTxtOneTouchOpProtocol + ); + ASSERT_EFI_ERROR (Status); + + /// + /// Locate TcgProtocol + /// + mTcgProtocol = NULL; + Status = gBS->LocateProtocol (&gEfiTcgProtocolGuid, NULL, (VOID **) &mTcgProtocol); + ASSERT_EFI_ERROR (Status); + + /// + /// Initiate the variable if it doesn't exist. + /// + if (ReadWriteVariable (&mTxtVariable, FALSE) != EFI_SUCCESS) { + ReadWriteVariable (&mTxtVariable, TRUE); + } + + return Status; +} + +/** + Read/Write variable for enable/disable TxT one + touch functions + + @param[in] VariableData - Point to Setup variable buffer + @param[in] WriteData - TRUE, write changes to Setup Variable. FALSE, not to write variable. + + @retval EFI_SUCCESS - Operation complete successful + @retval EFI_INVALID_PARAMETER - VariableData is NULL +**/ +EFI_STATUS +ReadWriteVariable ( + IN OUT TXT_ONE_TOUCH_SETUP *VariableData, + IN BOOLEAN WriteData + ) +{ + EFI_STATUS Status; + UINTN Size; + UINT32 VarAttrib; + + Status = EFI_SUCCESS; + Size = 0; + VarAttrib = EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS; + + if (VariableData == NULL) { + return EFI_INVALID_PARAMETER; + } + + if (WriteData == TRUE) { + /// + /// Write TxT variable + /// + Size = sizeof (TXT_ONE_TOUCH_SETUP); + + Status = gRT->SetVariable ( + TXT_ONE_TOUCH_VAR, + &gTxtOneTouchGuid, + VarAttrib, + Size, + VariableData + ); + } else { + /// + /// Read TxT variable + /// + Size = sizeof (TXT_ONE_TOUCH_SETUP); + + Status = gRT->GetVariable ( + TXT_ONE_TOUCH_VAR, + &gTxtOneTouchGuid, + NULL, + &Size, + VariableData + ); + } + + return Status; +} + +/** + Read TxT Maintenance flag + + @retval TRUE - TxT Maintenance Flag is TRUE + @retval FALSE - TxT Maintenance Flag is FALSE +**/ +BOOLEAN +CheckTxtMaintenanceFlag ( + VOID + ) +{ + EFI_STATUS Status; + + Status = EFI_SUCCESS; + + /// + /// TBD. Need to read TPM NV index 0x50010000 + /// + /// + /// Read TxT variable first + /// + Status = ReadWriteVariable (&mTxtVariable, FALSE); + if (EFI_ERROR (Status)) { + return FALSE; + } + + return mTxtVariable.NoTxtMaintenance; +} + +/** + Extend PPI operation for TxT. + + @param[in] This - Point of TXT_ONE_TOUCH_OP_PROTOCOL + @param[in] Command - Operation value for TxT + + @retval EFI_SUCCESS - Execute the Command successful + @retval EFI_UNSUPPORTED - Command is not supported +**/ +EFI_STATUS +EFIAPI +TxtExecOperation ( + IN TXT_ONE_TOUCH_OP_PROTOCOL *This, + IN UINT8 Command + ) +{ + EFI_STATUS Status; + + Status = EFI_SUCCESS; + + /// + /// Read TxT variable first + /// + Status = ReadWriteVariable (&mTxtVariable, FALSE); + if (EFI_ERROR (Status)) { + return Status; + } + /// + /// Read variable for TxT One Touch function + /// The variable can be Setup variable + /// + switch (Command) { + case DISABLE_DEACTIVATE: + /// + /// Disable & Deactive TPM + /// Disable TxT + /// + mTxtVariable.TxtEnable = FALSE; + break; + + case ENABLE_VT: + /// + /// Enable VT + /// + mTxtVariable.VtEnable = TRUE; + break; + + case DISABLE_VT_TXT: + /// + /// Disable VT and TxT + /// + mTxtVariable.VtEnable = FALSE; + mTxtVariable.TxtEnable = FALSE; + break; + + case ENABLE_VTD: + /// + /// Enable VT-d + /// + mTxtVariable.VtdEnable = TRUE; + break; + + case DISABLE_VTD_TXT: + /// + /// Disable VT-d and TxT + /// + mTxtVariable.VtdEnable = FALSE; + break; + + case ENABLE_ACTTPM_VT_VTD_TXT_DISABLE_STM: + /// + /// Enable-Active TPM + /// Enable VT, VT-d and TxT + /// Disable STM + /// + TpmEnableActive (ENABLE_ACTIVATE); + /// + /// mTxtVariable.TpmEnable = TRUE; + /// mTxtVariable.TpmActive = TRUE; + /// + mTxtVariable.VtEnable = TRUE; + mTxtVariable.VtdEnable = TRUE; + mTxtVariable.TxtEnable = TRUE; + mTxtVariable.StmEnable = FALSE; + break; + + case ENABLE_ACTTPM_VT_VTD_TXT_STM: + /// + /// Enable-Active TPM + /// Enable VT, VT-d, TxT and STM + /// + TpmEnableActive (ENABLE_ACTIVATE); + /// + /// mTxtVariable.TpmEnable = TRUE; + /// mTxtVariable.TpmActive = TRUE; + /// + mTxtVariable.VtEnable = TRUE; + mTxtVariable.VtdEnable = TRUE; + mTxtVariable.TxtEnable = TRUE; + mTxtVariable.StmEnable = TRUE; + break; + + case DISABLE_STM: + /// + /// Disable STM + /// + mTxtVariable.StmEnable = FALSE; + break; + + case DISABLE_TXT_STM: + /// + /// Disable TxT and STM + /// + mTxtVariable.TxtEnable = FALSE; + mTxtVariable.StmEnable = FALSE; + break; + + case DISABLE_SENTER_VMX: + /// + /// Disable SENTER and VMX + /// + Status = EFI_UNSUPPORTED; + break; + + case ENABLE_VMX_SMX_ONLY: + /// + /// Enable VMX in SMX only + /// + Status = EFI_UNSUPPORTED; + break; + + case ENABLE_VMX_OUTSIDE_SMX: + /// + /// Enable VMX outside SMX Only + /// + Status = EFI_UNSUPPORTED; + break; + + case ENABLE_VMX: + /// + /// Enable VMX + /// + Status = EFI_UNSUPPORTED; + break; + + case ENABLE_SENTER_ONLY: + /// + /// Enable SENTER Only + /// + Status = EFI_UNSUPPORTED; + break; + + case ENABLE_SENTER_VMX_IN_SMX: + /// + /// Enable SENTER and VMX in SMX + /// + Status = EFI_UNSUPPORTED; + break; + + case ENABLE_SENTER_VMX_OUTSIDE_SMX: + /// + /// Enable SENTER and VMX outside SMX + /// + Status = EFI_UNSUPPORTED; + break; + + case ENABLE_SENTER_VMX: + /// + /// Enable SENTER and VMX + /// + Status = EFI_UNSUPPORTED; + break; + + case SET_NO_TXT_MAINTENANCE_FALSE: + /// + /// Set NoTxtMaintenance Flag FALSE + /// + mTxtVariable.NoTxtMaintenance = FALSE; + break; + + case SET_NO_TXT_MAINTENANCE_TRUE: + /// + /// Set NoTxtMaintenance Flag TRUE + /// + mTxtVariable.NoTxtMaintenance = TRUE; + break; + + default: + return EFI_UNSUPPORTED; + } + /// + /// Validate states + /// + Status = ValidateTxtStates (&mTxtVariable); + if (EFI_ERROR (Status)) { + Status = EFI_UNSUPPORTED; + } else { + /// + /// if settings are correct, write it to variable + /// + Status = ReadWriteVariable (&mTxtVariable, TRUE); + } + + return Status; +} + +/** + Confirmation dialog for TxT PPI + + @param[in] This - Point of TXT_ONE_TOUCH_OP_PROTOCOL + @param[in] Command - Operation value for TxT + @param[in] Confirm - User confirm + + @retval EFI_SUCCESS - Execute the Command successful + @retval EFI_UNSUPPORTED - Command is not supported +**/ +EFI_STATUS +EFIAPI +TxtConfirmationDialog ( + IN TXT_ONE_TOUCH_OP_PROTOCOL *This, + IN UINT8 Command, + IN OUT BOOLEAN *Confirm + ) +{ + EFI_STATUS Status; + + Status = EFI_SUCCESS; + + if (CheckTxtMaintenanceFlag ()) { + *Confirm = FALSE; + } + + switch (Command) { + case DISABLE_DEACTIVATE: + /// + /// Disable & Deactive TPM + /// Disable TxT + /// + gST->ConOut->OutputString ( + gST->ConOut, + L"\nA configuration change was requested to Disable TxT\n\n\r" + ); + + break; + + case ENABLE_VT: + /// + /// Enable VT + /// + gST->ConOut->OutputString ( + gST->ConOut, + L"\nA configuration change was requested to Enable VT\n\n\r" + ); + break; + + case DISABLE_VT_TXT: + /// + /// Disable VT and TxT + /// + gST->ConOut->OutputString ( + gST->ConOut, + L"\nA configuration change was requested to Disable VT and TxT\n\n\r" + ); + break; + + case ENABLE_VTD: + /// + /// Enable VT-d + /// + gST->ConOut->OutputString ( + gST->ConOut, + L"\nA configuration change was requested to Enable VT-d\n\n\r" + ); + break; + + case DISABLE_VTD_TXT: + /// + /// Disable VT-d and TxT + /// + gST->ConOut->OutputString ( + gST->ConOut, + L"\nA configuration change was requested to Disable VT-d and TxT\n\n\r" + ); + break; + + case ENABLE_ACTTPM_VT_VTD_TXT_DISABLE_STM: + /// + /// Enable-Active TPM + /// Enable VT, VT-d and TxT + /// Disable STM + /// + gST->ConOut->OutputString ( + gST->ConOut, + L"\nA configuration change was requested to Enable/Active TPM and Enable VT/VT-d/TxT, and Disable STM\n\n\r" + ); + break; + + case ENABLE_ACTTPM_VT_VTD_TXT_STM: + /// + /// Enable-Active TPM + /// Enable VT, VT-d, TxT and STM + /// + gST->ConOut->OutputString ( + gST->ConOut, + L"\nA configuration change was requested to Enable/Active TPM and Enable VT/VT-d/TxT/STM\n\n\r" + ); + break; + + case DISABLE_STM: + /// + /// Disable STM + /// + gST->ConOut->OutputString ( + gST->ConOut, + L"\nA configuration change was requested to Disable STM\n\n\r" + ); + break; + + case DISABLE_TXT_STM: + /// + /// Disable TxT and STM + /// + gST->ConOut->OutputString ( + gST->ConOut, + L"\nA configuration change was requested to Disable TxT and STM\n\n\r" + ); + break; + + case DISABLE_SENTER_VMX: + /// + /// Disable SENTER and VMX + /// + gST->ConOut->OutputString ( + gST->ConOut, + L"\nA configuration change was requested to Disable SENTER and VMX\n\n\r" + ); + break; + + case ENABLE_VMX_SMX_ONLY: + /// + /// Enable VMX in SMX only + /// + gST->ConOut->OutputString ( + gST->ConOut, + L"\nA configuration change was requested to Enable VMX in SMX only\n\n\r" + ); + break; + + case ENABLE_VMX_OUTSIDE_SMX: + /// + /// Enable VMX outside SMX Only + /// + gST->ConOut->OutputString ( + gST->ConOut, + L"\nA configuration change was requested to Enable VMX outside SMX Only\n\n\r" + ); + break; + + case ENABLE_VMX: + /// + /// Enable VMX + /// + gST->ConOut->OutputString ( + gST->ConOut, + L"\nA configuration change was requested to Enable VMX\n\n\r" + ); + break; + + case ENABLE_SENTER_ONLY: + /// + /// Enable SENTER Only + /// + gST->ConOut->OutputString ( + gST->ConOut, + L"\nA configuration change was requested to Enable SENTER only\n\n\r" + ); + break; + + case ENABLE_SENTER_VMX_IN_SMX: + /// + /// Enable SENTER and VMX in SMX + /// + gST->ConOut->OutputString ( + gST->ConOut, + L"\nA configuration change was requested to Enable SENTER and VMX in SMX\n\n\r" + ); + break; + + case ENABLE_SENTER_VMX_OUTSIDE_SMX: + /// + /// Enable SENTER and VMX outside SMX + /// + gST->ConOut->OutputString ( + gST->ConOut, + L"\nA configuration change was requested to Enable SENTER and VMX outside SMX\n\n\r" + ); + break; + + case ENABLE_SENTER_VMX: + /// + /// Enable SENTER and VMX + /// + gST->ConOut->OutputString ( + gST->ConOut, + L"\nA configuration change was requested to Enable SENTER and VMX\n\n\r" + ); + break; + + case SET_NO_TXT_MAINTENANCE_FALSE: + /// + /// Set NoTxtMaintenance Flag FALSE + /// + gST->ConOut->OutputString ( + gST->ConOut, + L"\nA configuration change was requested to Set TxT Maintenance Flag to FALSE\n\n\r" + ); + break; + + case SET_NO_TXT_MAINTENANCE_TRUE: + /// + /// Set NoTxtMaintenance Flag TRUE + /// + gST->ConOut->OutputString ( + gST->ConOut, + L"\nA configuration change was requested to Set TxT Maintenance Flag to TRUE\n\n\r" + ); + break; + + default: + return EFI_UNSUPPORTED; + } + + return Status; +} + +/** + Reset system. + + @param[in] This - Point of TXT_ONE_TOUCH_OP_PROTOCOL + @param[in] Command - Operation value for TxT + + @retval EFI_SUCCESS - Always return EFI_SUCCESS +**/ +EFI_STATUS +EFIAPI +TxtResetState ( + IN TXT_ONE_TOUCH_OP_PROTOCOL *This, + IN UINT8 Command + ) +{ + EFI_STATUS Status; + PCH_RESET_PROTOCOL *PchReset; + + Status = gBS->LocateProtocol (&gPchResetProtocolGuid, NULL, (VOID **) &PchReset); + if (!EFI_ERROR (Status)) { + PchReset->Reset (PchReset, GlobalReset); + } else { + gRT->ResetSystem (EfiResetShutdown, EFI_SUCCESS, 0, NULL); + } + + ASSERT (FALSE); + /// + /// Should not be here + /// + return EFI_SUCCESS; +} |