mirror of https://github.com/acidanthera/audk.git
1394 lines
51 KiB
C
1394 lines
51 KiB
C
/** @file
|
|
|
|
Execute pending TPM requests from OS or BIOS and Lock TPM.
|
|
|
|
Caution: This module requires additional review when modified.
|
|
This driver will have external input - variable.
|
|
This external input must be validated carefully to avoid security issue.
|
|
|
|
ExecutePendingTpmRequest() will receive untrusted input and do validation.
|
|
|
|
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
|
|
This program and the accompanying materials
|
|
are licensed and made available under the terms and conditions of the BSD License
|
|
which accompanies this distribution. The full text of the license may be found at
|
|
http://opensource.org/licenses/bsd-license.php
|
|
|
|
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
|
|
**/
|
|
|
|
#include <PiDxe.h>
|
|
|
|
#include <Protocol/TcgService.h>
|
|
#include <Protocol/VariableLock.h>
|
|
#include <Library/DebugLib.h>
|
|
#include <Library/BaseMemoryLib.h>
|
|
#include <Library/UefiRuntimeServicesTableLib.h>
|
|
#include <Library/UefiDriverEntryPoint.h>
|
|
#include <Library/UefiBootServicesTableLib.h>
|
|
#include <Library/UefiLib.h>
|
|
#include <Library/MemoryAllocationLib.h>
|
|
#include <Library/PrintLib.h>
|
|
#include <Library/HiiLib.h>
|
|
#include <Guid/EventGroup.h>
|
|
#include <Guid/PhysicalPresenceData.h>
|
|
#include <Library/TcgPpVendorLib.h>
|
|
|
|
#define CONFIRM_BUFFER_SIZE 4096
|
|
|
|
EFI_HII_HANDLE mPpStringPackHandle;
|
|
|
|
/**
|
|
Get string by string id from HII Interface.
|
|
|
|
@param[in] Id String ID.
|
|
|
|
@retval CHAR16 * String from ID.
|
|
@retval NULL If error occurs.
|
|
|
|
**/
|
|
CHAR16 *
|
|
PhysicalPresenceGetStringById (
|
|
IN EFI_STRING_ID Id
|
|
)
|
|
{
|
|
return HiiGetString (mPpStringPackHandle, Id, NULL);
|
|
}
|
|
|
|
/**
|
|
Get TPM physical presence permanent flags.
|
|
|
|
@param[in] TcgProtocol EFI TCG Protocol instance.
|
|
@param[out] LifetimeLock physicalPresenceLifetimeLock permanent flag.
|
|
@param[out] CmdEnable physicalPresenceCMDEnable permanent flag.
|
|
|
|
@retval EFI_SUCCESS Flags were returns successfully.
|
|
@retval other Failed to locate EFI TCG Protocol.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
GetTpmCapability (
|
|
IN EFI_TCG_PROTOCOL *TcgProtocol,
|
|
OUT BOOLEAN *LifetimeLock,
|
|
OUT BOOLEAN *CmdEnable
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
TPM_RQU_COMMAND_HDR *TpmRqu;
|
|
TPM_RSP_COMMAND_HDR *TpmRsp;
|
|
UINT32 *SendBufPtr;
|
|
UINT8 SendBuffer[sizeof (*TpmRqu) + sizeof (UINT32) * 3];
|
|
TPM_PERMANENT_FLAGS *TpmPermanentFlags;
|
|
UINT8 RecvBuffer[40];
|
|
|
|
//
|
|
// Fill request header
|
|
//
|
|
TpmRsp = (TPM_RSP_COMMAND_HDR*)RecvBuffer;
|
|
TpmRqu = (TPM_RQU_COMMAND_HDR*)SendBuffer;
|
|
|
|
TpmRqu->tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);
|
|
TpmRqu->paramSize = SwapBytes32 (sizeof (SendBuffer));
|
|
TpmRqu->ordinal = SwapBytes32 (TPM_ORD_GetCapability);
|
|
|
|
//
|
|
// Set request parameter
|
|
//
|
|
SendBufPtr = (UINT32*)(TpmRqu + 1);
|
|
WriteUnaligned32 (SendBufPtr++, SwapBytes32 (TPM_CAP_FLAG));
|
|
WriteUnaligned32 (SendBufPtr++, SwapBytes32 (sizeof (TPM_CAP_FLAG_PERMANENT)));
|
|
WriteUnaligned32 (SendBufPtr, SwapBytes32 (TPM_CAP_FLAG_PERMANENT));
|
|
|
|
Status = TcgProtocol->PassThroughToTpm (
|
|
TcgProtocol,
|
|
sizeof (SendBuffer),
|
|
(UINT8*)TpmRqu,
|
|
sizeof (RecvBuffer),
|
|
(UINT8*)&RecvBuffer
|
|
);
|
|
ASSERT_EFI_ERROR (Status);
|
|
ASSERT (TpmRsp->tag == SwapBytes16 (TPM_TAG_RSP_COMMAND));
|
|
ASSERT (TpmRsp->returnCode == 0);
|
|
|
|
TpmPermanentFlags = (TPM_PERMANENT_FLAGS *)&RecvBuffer[sizeof (TPM_RSP_COMMAND_HDR) + sizeof (UINT32)];
|
|
|
|
if (LifetimeLock != NULL) {
|
|
*LifetimeLock = TpmPermanentFlags->physicalPresenceLifetimeLock;
|
|
}
|
|
|
|
if (CmdEnable != NULL) {
|
|
*CmdEnable = TpmPermanentFlags->physicalPresenceCMDEnable;
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Issue TSC_PhysicalPresence command to TPM.
|
|
|
|
@param[in] TcgProtocol EFI TCG Protocol instance.
|
|
@param[in] PhysicalPresence The state to set the TPM's Physical Presence flags.
|
|
|
|
@retval EFI_SUCCESS TPM executed the command successfully.
|
|
@retval EFI_SECURITY_VIOLATION TPM returned error when executing the command.
|
|
@retval other Failed to locate EFI TCG Protocol.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
TpmPhysicalPresence (
|
|
IN EFI_TCG_PROTOCOL *TcgProtocol,
|
|
IN TPM_PHYSICAL_PRESENCE PhysicalPresence
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
TPM_RQU_COMMAND_HDR *TpmRqu;
|
|
TPM_PHYSICAL_PRESENCE *TpmPp;
|
|
TPM_RSP_COMMAND_HDR TpmRsp;
|
|
UINT8 Buffer[sizeof (*TpmRqu) + sizeof (*TpmPp)];
|
|
|
|
TpmRqu = (TPM_RQU_COMMAND_HDR*)Buffer;
|
|
TpmPp = (TPM_PHYSICAL_PRESENCE*)(TpmRqu + 1);
|
|
|
|
TpmRqu->tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);
|
|
TpmRqu->paramSize = SwapBytes32 (sizeof (Buffer));
|
|
TpmRqu->ordinal = SwapBytes32 (TSC_ORD_PhysicalPresence);
|
|
WriteUnaligned16 (TpmPp, (TPM_PHYSICAL_PRESENCE) SwapBytes16 (PhysicalPresence));
|
|
|
|
Status = TcgProtocol->PassThroughToTpm (
|
|
TcgProtocol,
|
|
sizeof (Buffer),
|
|
(UINT8*)TpmRqu,
|
|
sizeof (TpmRsp),
|
|
(UINT8*)&TpmRsp
|
|
);
|
|
ASSERT_EFI_ERROR (Status);
|
|
ASSERT (TpmRsp.tag == SwapBytes16 (TPM_TAG_RSP_COMMAND));
|
|
if (TpmRsp.returnCode != 0) {
|
|
//
|
|
// If it fails, some requirements may be needed for this command.
|
|
//
|
|
return EFI_SECURITY_VIOLATION;
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Issue a TPM command for which no additional output data will be returned.
|
|
|
|
@param[in] TcgProtocol EFI TCG Protocol instance.
|
|
@param[in] Ordinal TPM command code.
|
|
@param[in] AdditionalParameterSize Additional parameter size.
|
|
@param[in] AdditionalParameters Pointer to the Additional paramaters.
|
|
|
|
@retval TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE Error occurred during sending command to TPM or
|
|
receiving response from TPM.
|
|
@retval Others Return code from the TPM device after command execution.
|
|
|
|
**/
|
|
UINT32
|
|
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 TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE;
|
|
}
|
|
|
|
TpmRqu->tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);
|
|
Size = (UINT32)(sizeof (*TpmRqu) + AdditionalParameterSize);
|
|
TpmRqu->paramSize = SwapBytes32 (Size);
|
|
TpmRqu->ordinal = SwapBytes32 (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 != SwapBytes16 (TPM_TAG_RSP_COMMAND))) {
|
|
return TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE;
|
|
}
|
|
return SwapBytes32 (TpmRsp.returnCode);
|
|
}
|
|
|
|
/**
|
|
Execute physical presence operation requested by the OS.
|
|
|
|
@param[in] TcgProtocol EFI TCG Protocol instance.
|
|
@param[in] CommandCode Physical presence operation value.
|
|
@param[in, out] PpiFlags The physical presence interface flags.
|
|
|
|
@retval TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE Unknown physical presence operation.
|
|
@retval TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE Error occurred during sending command to TPM or
|
|
receiving response from TPM.
|
|
@retval Others Return code from the TPM device after command execution.
|
|
|
|
**/
|
|
UINT32
|
|
ExecutePhysicalPresence (
|
|
IN EFI_TCG_PROTOCOL *TcgProtocol,
|
|
IN UINT32 CommandCode,
|
|
IN OUT EFI_PHYSICAL_PRESENCE_FLAGS *PpiFlags
|
|
)
|
|
{
|
|
BOOLEAN BoolVal;
|
|
UINT32 TpmResponse;
|
|
UINT32 InData[5];
|
|
|
|
switch (CommandCode) {
|
|
case PHYSICAL_PRESENCE_ENABLE:
|
|
return TpmCommandNoReturnData (
|
|
TcgProtocol,
|
|
TPM_ORD_PhysicalEnable,
|
|
0,
|
|
NULL
|
|
);
|
|
|
|
case PHYSICAL_PRESENCE_DISABLE:
|
|
return TpmCommandNoReturnData (
|
|
TcgProtocol,
|
|
TPM_ORD_PhysicalDisable,
|
|
0,
|
|
NULL
|
|
);
|
|
|
|
case PHYSICAL_PRESENCE_ACTIVATE:
|
|
BoolVal = FALSE;
|
|
return TpmCommandNoReturnData (
|
|
TcgProtocol,
|
|
TPM_ORD_PhysicalSetDeactivated,
|
|
sizeof (BoolVal),
|
|
&BoolVal
|
|
);
|
|
|
|
case PHYSICAL_PRESENCE_DEACTIVATE:
|
|
BoolVal = TRUE;
|
|
return TpmCommandNoReturnData (
|
|
TcgProtocol,
|
|
TPM_ORD_PhysicalSetDeactivated,
|
|
sizeof (BoolVal),
|
|
&BoolVal
|
|
);
|
|
|
|
case PHYSICAL_PRESENCE_CLEAR:
|
|
return TpmCommandNoReturnData (
|
|
TcgProtocol,
|
|
TPM_ORD_ForceClear,
|
|
0,
|
|
NULL
|
|
);
|
|
|
|
case PHYSICAL_PRESENCE_ENABLE_ACTIVATE:
|
|
TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_ENABLE, PpiFlags);
|
|
if (TpmResponse == 0) {
|
|
TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_ACTIVATE, PpiFlags);
|
|
}
|
|
return TpmResponse;
|
|
|
|
case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE:
|
|
TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_DEACTIVATE, PpiFlags);
|
|
if (TpmResponse == 0) {
|
|
TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_DISABLE, PpiFlags);
|
|
}
|
|
return TpmResponse;
|
|
|
|
case PHYSICAL_PRESENCE_SET_OWNER_INSTALL_TRUE:
|
|
BoolVal = TRUE;
|
|
return TpmCommandNoReturnData (
|
|
TcgProtocol,
|
|
TPM_ORD_SetOwnerInstall,
|
|
sizeof (BoolVal),
|
|
&BoolVal
|
|
);
|
|
|
|
case PHYSICAL_PRESENCE_SET_OWNER_INSTALL_FALSE:
|
|
BoolVal = FALSE;
|
|
return TpmCommandNoReturnData (
|
|
TcgProtocol,
|
|
TPM_ORD_SetOwnerInstall,
|
|
sizeof (BoolVal),
|
|
&BoolVal
|
|
);
|
|
|
|
case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_OWNER_TRUE:
|
|
//
|
|
// PHYSICAL_PRESENCE_ENABLE_ACTIVATE + PHYSICAL_PRESENCE_SET_OWNER_INSTALL_TRUE
|
|
// PHYSICAL_PRESENCE_SET_OWNER_INSTALL_TRUE will be executed after reboot
|
|
//
|
|
if ((PpiFlags->PPFlags & TCG_VENDOR_LIB_FLAG_RESET_TRACK) == 0) {
|
|
TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_ENABLE_ACTIVATE, PpiFlags);
|
|
PpiFlags->PPFlags |= TCG_VENDOR_LIB_FLAG_RESET_TRACK;
|
|
} else {
|
|
TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_SET_OWNER_INSTALL_TRUE, PpiFlags);
|
|
PpiFlags->PPFlags &= ~TCG_VENDOR_LIB_FLAG_RESET_TRACK;
|
|
}
|
|
return TpmResponse;
|
|
|
|
case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE_OWNER_FALSE:
|
|
TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_SET_OWNER_INSTALL_FALSE, PpiFlags);
|
|
if (TpmResponse == 0) {
|
|
TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_DEACTIVATE_DISABLE, PpiFlags);
|
|
}
|
|
return TpmResponse;
|
|
|
|
case PHYSICAL_PRESENCE_DEFERRED_PP_UNOWNERED_FIELD_UPGRADE:
|
|
InData[0] = SwapBytes32 (TPM_SET_STCLEAR_DATA); // CapabilityArea
|
|
InData[1] = SwapBytes32 (sizeof(UINT32)); // SubCapSize
|
|
InData[2] = SwapBytes32 (TPM_SD_DEFERREDPHYSICALPRESENCE); // SubCap
|
|
InData[3] = SwapBytes32 (sizeof(UINT32)); // SetValueSize
|
|
InData[4] = SwapBytes32 (1); // UnownedFieldUpgrade; bit0
|
|
return TpmCommandNoReturnData (
|
|
TcgProtocol,
|
|
TPM_ORD_SetCapability,
|
|
sizeof (UINT32) * 5,
|
|
InData
|
|
);
|
|
|
|
case PHYSICAL_PRESENCE_SET_OPERATOR_AUTH:
|
|
//
|
|
// TPM_SetOperatorAuth
|
|
// This command requires UI to prompt user for Auth data
|
|
// Here it is NOT implemented
|
|
//
|
|
return TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE;
|
|
|
|
case PHYSICAL_PRESENCE_CLEAR_ENABLE_ACTIVATE:
|
|
TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_CLEAR, PpiFlags);
|
|
if (TpmResponse == 0) {
|
|
TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_ENABLE_ACTIVATE, PpiFlags);
|
|
}
|
|
return TpmResponse;
|
|
|
|
case PHYSICAL_PRESENCE_SET_NO_PPI_PROVISION_FALSE:
|
|
PpiFlags->PPFlags &= ~TCG_BIOS_TPM_MANAGEMENT_FLAG_NO_PPI_PROVISION;
|
|
return 0;
|
|
|
|
case PHYSICAL_PRESENCE_SET_NO_PPI_PROVISION_TRUE:
|
|
PpiFlags->PPFlags |= TCG_BIOS_TPM_MANAGEMENT_FLAG_NO_PPI_PROVISION;
|
|
return 0;
|
|
|
|
case PHYSICAL_PRESENCE_SET_NO_PPI_CLEAR_FALSE:
|
|
PpiFlags->PPFlags &= ~TCG_BIOS_TPM_MANAGEMENT_FLAG_NO_PPI_CLEAR;
|
|
return 0;
|
|
|
|
case PHYSICAL_PRESENCE_SET_NO_PPI_CLEAR_TRUE:
|
|
PpiFlags->PPFlags |= TCG_BIOS_TPM_MANAGEMENT_FLAG_NO_PPI_CLEAR;
|
|
return 0;
|
|
|
|
case PHYSICAL_PRESENCE_SET_NO_PPI_MAINTENANCE_FALSE:
|
|
PpiFlags->PPFlags &= ~TCG_BIOS_TPM_MANAGEMENT_FLAG_NO_PPI_MAINTENANCE;
|
|
return 0;
|
|
|
|
case PHYSICAL_PRESENCE_SET_NO_PPI_MAINTENANCE_TRUE:
|
|
PpiFlags->PPFlags |= TCG_BIOS_TPM_MANAGEMENT_FLAG_NO_PPI_MAINTENANCE;
|
|
return 0;
|
|
|
|
case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR:
|
|
//
|
|
// PHYSICAL_PRESENCE_ENABLE_ACTIVATE + PHYSICAL_PRESENCE_CLEAR
|
|
// PHYSICAL_PRESENCE_CLEAR will be executed after reboot.
|
|
//
|
|
if ((PpiFlags->PPFlags & TCG_VENDOR_LIB_FLAG_RESET_TRACK) == 0) {
|
|
TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_ENABLE_ACTIVATE, PpiFlags);
|
|
PpiFlags->PPFlags |= TCG_VENDOR_LIB_FLAG_RESET_TRACK;
|
|
} else {
|
|
TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_CLEAR, PpiFlags);
|
|
PpiFlags->PPFlags &= ~TCG_VENDOR_LIB_FLAG_RESET_TRACK;
|
|
}
|
|
return TpmResponse;
|
|
|
|
case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR_ENABLE_ACTIVATE:
|
|
//
|
|
// PHYSICAL_PRESENCE_ENABLE_ACTIVATE + PHYSICAL_PRESENCE_CLEAR_ENABLE_ACTIVATE
|
|
// PHYSICAL_PRESENCE_CLEAR_ENABLE_ACTIVATE will be executed after reboot.
|
|
//
|
|
if ((PpiFlags->PPFlags & TCG_VENDOR_LIB_FLAG_RESET_TRACK) == 0) {
|
|
TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_ENABLE_ACTIVATE, PpiFlags);
|
|
PpiFlags->PPFlags |= TCG_VENDOR_LIB_FLAG_RESET_TRACK;
|
|
} else {
|
|
TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_CLEAR_ENABLE_ACTIVATE, PpiFlags);
|
|
PpiFlags->PPFlags &= ~TCG_VENDOR_LIB_FLAG_RESET_TRACK;
|
|
}
|
|
return TpmResponse;
|
|
|
|
default:
|
|
;
|
|
}
|
|
return TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE;
|
|
}
|
|
|
|
|
|
/**
|
|
Read the specified key for user confirmation.
|
|
|
|
@param[in] CautionKey If true, F12 is used as confirm key;
|
|
If false, F10 is used as confirm key.
|
|
|
|
@retval TRUE User confirmed the changes by input.
|
|
@retval FALSE User discarded the changes or device error.
|
|
|
|
**/
|
|
BOOLEAN
|
|
ReadUserKey (
|
|
IN BOOLEAN CautionKey
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
EFI_INPUT_KEY Key;
|
|
UINT16 InputKey;
|
|
UINTN Index;
|
|
|
|
InputKey = 0;
|
|
do {
|
|
Status = gST->ConIn->ReadKeyStroke (gST->ConIn, &Key);
|
|
if (Status == EFI_NOT_READY) {
|
|
gBS->WaitForEvent (1, &gST->ConIn->WaitForKey, &Index);
|
|
continue;
|
|
}
|
|
|
|
if (Status == EFI_DEVICE_ERROR) {
|
|
return FALSE;
|
|
}
|
|
|
|
if (Key.ScanCode == SCAN_ESC) {
|
|
InputKey = Key.ScanCode;
|
|
}
|
|
if ((Key.ScanCode == SCAN_F10) && !CautionKey) {
|
|
InputKey = Key.ScanCode;
|
|
}
|
|
if ((Key.ScanCode == SCAN_F12) && CautionKey) {
|
|
InputKey = Key.ScanCode;
|
|
}
|
|
} while (InputKey == 0);
|
|
|
|
if (InputKey != SCAN_ESC) {
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/**
|
|
The constructor function register UNI strings into imageHandle.
|
|
|
|
It will ASSERT() if that operation fails and it will always return EFI_SUCCESS.
|
|
|
|
@param ImageHandle The firmware allocated handle for the EFI image.
|
|
@param SystemTable A pointer to the EFI System Table.
|
|
|
|
@retval EFI_SUCCESS The constructor successfully added string package.
|
|
@retval Other value The constructor can't add string package.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
TcgPhysicalPresenceLibConstructor (
|
|
IN EFI_HANDLE ImageHandle,
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
|
)
|
|
{
|
|
mPpStringPackHandle = HiiAddPackages (&gEfiPhysicalPresenceGuid, ImageHandle, DxeTcgPhysicalPresenceLibStrings, NULL);
|
|
ASSERT (mPpStringPackHandle != NULL);
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
Display the confirm text and get user confirmation.
|
|
|
|
@param[in] TpmPpCommand The requested TPM physical presence command.
|
|
|
|
@retval TRUE The user has confirmed the changes.
|
|
@retval FALSE The user doesn't confirm the changes.
|
|
**/
|
|
BOOLEAN
|
|
UserConfirm (
|
|
IN UINT32 TpmPpCommand
|
|
)
|
|
{
|
|
CHAR16 *ConfirmText;
|
|
CHAR16 *TmpStr1;
|
|
CHAR16 *TmpStr2;
|
|
UINTN BufSize;
|
|
BOOLEAN CautionKey;
|
|
UINT16 Index;
|
|
CHAR16 DstStr[81];
|
|
|
|
TmpStr2 = NULL;
|
|
CautionKey = FALSE;
|
|
BufSize = CONFIRM_BUFFER_SIZE;
|
|
ConfirmText = AllocateZeroPool (BufSize);
|
|
ASSERT (ConfirmText != NULL);
|
|
|
|
switch (TpmPpCommand) {
|
|
case PHYSICAL_PRESENCE_ENABLE:
|
|
TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ENABLE));
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));
|
|
UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
break;
|
|
|
|
case PHYSICAL_PRESENCE_DISABLE:
|
|
TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_DISABLE));
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));
|
|
UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
break;
|
|
|
|
case PHYSICAL_PRESENCE_ACTIVATE:
|
|
TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACTIVATE));
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));
|
|
UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
break;
|
|
|
|
case PHYSICAL_PRESENCE_DEACTIVATE:
|
|
TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_DEACTIVATE));
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));
|
|
UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
break;
|
|
|
|
case PHYSICAL_PRESENCE_CLEAR:
|
|
CautionKey = TRUE;
|
|
TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CLEAR));
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));
|
|
UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), L" \n\n", (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
break;
|
|
|
|
case PHYSICAL_PRESENCE_ENABLE_ACTIVATE:
|
|
TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ENABLE_ACTIVATE));
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));
|
|
UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NOTE_ON));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
break;
|
|
|
|
case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE:
|
|
TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_DEACTIVATE_DISABLE));
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));
|
|
UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NOTE_OFF));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
break;
|
|
|
|
case PHYSICAL_PRESENCE_SET_OWNER_INSTALL_TRUE:
|
|
TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ALLOW_TAKE_OWNERSHIP));
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));
|
|
UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
break;
|
|
|
|
case PHYSICAL_PRESENCE_SET_OWNER_INSTALL_FALSE:
|
|
TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_DISALLOW_TAKE_OWNERSHIP));
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));
|
|
UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
break;
|
|
|
|
case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_OWNER_TRUE:
|
|
TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_TURN_ON));
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));
|
|
UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NOTE_ON));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
break;
|
|
|
|
case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE_OWNER_FALSE:
|
|
TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_TURN_OFF));
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));
|
|
UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NOTE_OFF));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
break;
|
|
|
|
case PHYSICAL_PRESENCE_DEFERRED_PP_UNOWNERED_FIELD_UPGRADE:
|
|
CautionKey = TRUE;
|
|
TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_UNOWNED_FIELD_UPGRADE));
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_UPGRADE_HEAD_STR));
|
|
UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_MAINTAIN));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
break;
|
|
|
|
case PHYSICAL_PRESENCE_SET_OPERATOR_AUTH:
|
|
//
|
|
// TPM_SetOperatorAuth
|
|
// This command requires UI to prompt user for Auth data
|
|
// Here it is NOT implemented
|
|
//
|
|
break;
|
|
|
|
case PHYSICAL_PRESENCE_CLEAR_ENABLE_ACTIVATE:
|
|
CautionKey = TRUE;
|
|
TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CLEAR_TURN_ON));
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));
|
|
UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NOTE_ON));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR_CONT));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
break;
|
|
|
|
case PHYSICAL_PRESENCE_SET_NO_PPI_PROVISION_TRUE:
|
|
TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NO_PPI_PROVISION));
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_PPI_HEAD_STR));
|
|
UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NO_PPI_INFO));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
break;
|
|
|
|
case PHYSICAL_PRESENCE_SET_NO_PPI_CLEAR_TRUE:
|
|
CautionKey = TRUE;
|
|
TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CLEAR));
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_PPI_HEAD_STR));
|
|
UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NOTE_CLEAR));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), L" \n\n", (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NO_PPI_INFO));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
break;
|
|
|
|
case PHYSICAL_PRESENCE_SET_NO_PPI_MAINTENANCE_TRUE:
|
|
CautionKey = TRUE;
|
|
TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NO_PPI_MAINTAIN));
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_PPI_HEAD_STR));
|
|
UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_MAINTAIN));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NO_PPI_INFO));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
break;
|
|
|
|
case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR:
|
|
CautionKey = TRUE;
|
|
TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ENABLE_ACTIVATE_CLEAR));
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));
|
|
UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), L" \n\n", (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
break;
|
|
|
|
case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR_ENABLE_ACTIVATE:
|
|
CautionKey = TRUE;
|
|
TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ENABLE_ACTIVATE_CLEAR_ENABLE_ACTIVATE));
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));
|
|
UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NOTE_ON));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR_CONT));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));
|
|
StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);
|
|
FreePool (TmpStr1);
|
|
break;
|
|
|
|
default:
|
|
;
|
|
}
|
|
|
|
if (TmpStr2 == NULL) {
|
|
FreePool (ConfirmText);
|
|
return FALSE;
|
|
}
|
|
|
|
TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_REJECT_KEY));
|
|
BufSize -= StrSize (ConfirmText);
|
|
UnicodeSPrint (ConfirmText + StrLen (ConfirmText), BufSize, TmpStr1, TmpStr2);
|
|
|
|
DstStr[80] = L'\0';
|
|
for (Index = 0; Index < StrLen (ConfirmText); Index += 80) {
|
|
StrnCpyS(DstStr, sizeof (DstStr) / sizeof (CHAR16), ConfirmText + Index, sizeof (DstStr) / sizeof (CHAR16) - 1);
|
|
Print (DstStr);
|
|
}
|
|
|
|
FreePool (TmpStr1);
|
|
FreePool (TmpStr2);
|
|
FreePool (ConfirmText);
|
|
|
|
if (ReadUserKey (CautionKey)) {
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/**
|
|
Check if there is a valid physical presence command request. Also updates parameter value
|
|
to whether the requested physical presence command already confirmed by user
|
|
|
|
@param[in] TcgPpData EFI TCG Physical Presence request data.
|
|
@param[in] Flags The physical presence interface flags.
|
|
@param[out] RequestConfirmed If the physical presence operation command required user confirm from UI.
|
|
True, it indicates the command doesn't require user confirm, or already confirmed
|
|
in last boot cycle by user.
|
|
False, it indicates the command need user confirm from UI.
|
|
|
|
@retval TRUE Physical Presence operation command is valid.
|
|
@retval FALSE Physical Presence operation command is invalid.
|
|
|
|
**/
|
|
BOOLEAN
|
|
HaveValidTpmRequest (
|
|
IN EFI_PHYSICAL_PRESENCE *TcgPpData,
|
|
IN EFI_PHYSICAL_PRESENCE_FLAGS Flags,
|
|
OUT BOOLEAN *RequestConfirmed
|
|
)
|
|
{
|
|
BOOLEAN IsRequestValid;
|
|
|
|
*RequestConfirmed = FALSE;
|
|
|
|
switch (TcgPpData->PPRequest) {
|
|
case PHYSICAL_PRESENCE_NO_ACTION:
|
|
*RequestConfirmed = TRUE;
|
|
return TRUE;
|
|
case PHYSICAL_PRESENCE_ENABLE:
|
|
case PHYSICAL_PRESENCE_DISABLE:
|
|
case PHYSICAL_PRESENCE_ACTIVATE:
|
|
case PHYSICAL_PRESENCE_DEACTIVATE:
|
|
case PHYSICAL_PRESENCE_ENABLE_ACTIVATE:
|
|
case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE:
|
|
case PHYSICAL_PRESENCE_SET_OWNER_INSTALL_TRUE:
|
|
case PHYSICAL_PRESENCE_SET_OWNER_INSTALL_FALSE:
|
|
case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_OWNER_TRUE:
|
|
case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE_OWNER_FALSE:
|
|
case PHYSICAL_PRESENCE_SET_OPERATOR_AUTH:
|
|
if ((Flags.PPFlags & TCG_BIOS_TPM_MANAGEMENT_FLAG_NO_PPI_PROVISION) != 0) {
|
|
*RequestConfirmed = TRUE;
|
|
}
|
|
break;
|
|
|
|
case PHYSICAL_PRESENCE_CLEAR:
|
|
case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR:
|
|
if ((Flags.PPFlags & TCG_BIOS_TPM_MANAGEMENT_FLAG_NO_PPI_CLEAR) != 0) {
|
|
*RequestConfirmed = TRUE;
|
|
}
|
|
break;
|
|
|
|
case PHYSICAL_PRESENCE_DEFERRED_PP_UNOWNERED_FIELD_UPGRADE:
|
|
if ((Flags.PPFlags & TCG_BIOS_TPM_MANAGEMENT_FLAG_NO_PPI_MAINTENANCE) != 0) {
|
|
*RequestConfirmed = TRUE;
|
|
}
|
|
break;
|
|
|
|
case PHYSICAL_PRESENCE_CLEAR_ENABLE_ACTIVATE:
|
|
case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR_ENABLE_ACTIVATE:
|
|
if ((Flags.PPFlags & TCG_BIOS_TPM_MANAGEMENT_FLAG_NO_PPI_CLEAR) != 0 && (Flags.PPFlags & TCG_BIOS_TPM_MANAGEMENT_FLAG_NO_PPI_PROVISION) != 0) {
|
|
*RequestConfirmed = TRUE;
|
|
}
|
|
break;
|
|
|
|
case PHYSICAL_PRESENCE_SET_NO_PPI_PROVISION_FALSE:
|
|
case PHYSICAL_PRESENCE_SET_NO_PPI_CLEAR_FALSE:
|
|
case PHYSICAL_PRESENCE_SET_NO_PPI_MAINTENANCE_FALSE:
|
|
*RequestConfirmed = TRUE;
|
|
break;
|
|
|
|
case PHYSICAL_PRESENCE_SET_NO_PPI_PROVISION_TRUE:
|
|
case PHYSICAL_PRESENCE_SET_NO_PPI_CLEAR_TRUE:
|
|
case PHYSICAL_PRESENCE_SET_NO_PPI_MAINTENANCE_TRUE:
|
|
break;
|
|
|
|
default:
|
|
if (TcgPpData->PPRequest >= TCG_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {
|
|
IsRequestValid = TcgPpVendorLibHasValidRequest (TcgPpData->PPRequest, Flags.PPFlags, RequestConfirmed);
|
|
if (!IsRequestValid) {
|
|
return FALSE;
|
|
} else {
|
|
break;
|
|
}
|
|
} else {
|
|
//
|
|
// Wrong Physical Presence command
|
|
//
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
if ((Flags.PPFlags & TCG_VENDOR_LIB_FLAG_RESET_TRACK) != 0) {
|
|
//
|
|
// It had been confirmed in last boot, it doesn't need confirm again.
|
|
//
|
|
*RequestConfirmed = TRUE;
|
|
}
|
|
|
|
//
|
|
// Physical Presence command is correct
|
|
//
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/**
|
|
Check and execute the requested physical presence command.
|
|
|
|
Caution: This function may receive untrusted input.
|
|
TcgPpData variable is external input, so this function will validate
|
|
its data structure to be valid value.
|
|
|
|
@param[in] TcgProtocol EFI TCG Protocol instance.
|
|
@param[in] TcgPpData Point to the physical presence NV variable.
|
|
@param[in] Flags The physical presence interface flags.
|
|
|
|
**/
|
|
VOID
|
|
ExecutePendingTpmRequest (
|
|
IN EFI_TCG_PROTOCOL *TcgProtocol,
|
|
IN EFI_PHYSICAL_PRESENCE *TcgPpData,
|
|
IN EFI_PHYSICAL_PRESENCE_FLAGS Flags
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
UINTN DataSize;
|
|
BOOLEAN RequestConfirmed;
|
|
EFI_PHYSICAL_PRESENCE_FLAGS NewFlags;
|
|
BOOLEAN ResetRequired;
|
|
UINT32 NewPPFlags;
|
|
|
|
if (!HaveValidTpmRequest(TcgPpData, Flags, &RequestConfirmed)) {
|
|
//
|
|
// Invalid operation request.
|
|
//
|
|
TcgPpData->PPResponse = TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE;
|
|
TcgPpData->LastPPRequest = TcgPpData->PPRequest;
|
|
TcgPpData->PPRequest = PHYSICAL_PRESENCE_NO_ACTION;
|
|
DataSize = sizeof (EFI_PHYSICAL_PRESENCE);
|
|
Status = gRT->SetVariable (
|
|
PHYSICAL_PRESENCE_VARIABLE,
|
|
&gEfiPhysicalPresenceGuid,
|
|
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
|
|
DataSize,
|
|
TcgPpData
|
|
);
|
|
return;
|
|
}
|
|
|
|
ResetRequired = FALSE;
|
|
if (TcgPpData->PPRequest >= TCG_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {
|
|
NewFlags = Flags;
|
|
NewPPFlags = NewFlags.PPFlags;
|
|
TcgPpData->PPResponse = TcgPpVendorLibExecutePendingRequest (TcgPpData->PPRequest, &NewPPFlags, &ResetRequired);
|
|
NewFlags.PPFlags = (UINT8)NewPPFlags;
|
|
} else {
|
|
if (!RequestConfirmed) {
|
|
//
|
|
// Print confirm text and wait for approval.
|
|
//
|
|
RequestConfirmed = UserConfirm (TcgPpData->PPRequest);
|
|
}
|
|
|
|
//
|
|
// Execute requested physical presence command
|
|
//
|
|
TcgPpData->PPResponse = TCG_PP_OPERATION_RESPONSE_USER_ABORT;
|
|
NewFlags = Flags;
|
|
if (RequestConfirmed) {
|
|
TcgPpData->PPResponse = ExecutePhysicalPresence (TcgProtocol, TcgPpData->PPRequest, &NewFlags);
|
|
}
|
|
}
|
|
|
|
//
|
|
// Save the flags if it is updated.
|
|
//
|
|
if (CompareMem (&Flags, &NewFlags, sizeof(EFI_PHYSICAL_PRESENCE_FLAGS)) != 0) {
|
|
Status = gRT->SetVariable (
|
|
PHYSICAL_PRESENCE_FLAGS_VARIABLE,
|
|
&gEfiPhysicalPresenceGuid,
|
|
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
|
|
sizeof (EFI_PHYSICAL_PRESENCE_FLAGS),
|
|
&NewFlags
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Clear request
|
|
//
|
|
if ((NewFlags.PPFlags & TCG_VENDOR_LIB_FLAG_RESET_TRACK) == 0) {
|
|
TcgPpData->LastPPRequest = TcgPpData->PPRequest;
|
|
TcgPpData->PPRequest = PHYSICAL_PRESENCE_NO_ACTION;
|
|
}
|
|
|
|
//
|
|
// Save changes
|
|
//
|
|
DataSize = sizeof (EFI_PHYSICAL_PRESENCE);
|
|
Status = gRT->SetVariable (
|
|
PHYSICAL_PRESENCE_VARIABLE,
|
|
&gEfiPhysicalPresenceGuid,
|
|
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
|
|
DataSize,
|
|
TcgPpData
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
return;
|
|
}
|
|
|
|
if (TcgPpData->PPResponse == TCG_PP_OPERATION_RESPONSE_USER_ABORT) {
|
|
return;
|
|
}
|
|
|
|
//
|
|
// Reset system to make new TPM settings in effect
|
|
//
|
|
switch (TcgPpData->LastPPRequest) {
|
|
case PHYSICAL_PRESENCE_ACTIVATE:
|
|
case PHYSICAL_PRESENCE_DEACTIVATE:
|
|
case PHYSICAL_PRESENCE_CLEAR:
|
|
case PHYSICAL_PRESENCE_ENABLE_ACTIVATE:
|
|
case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE:
|
|
case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_OWNER_TRUE:
|
|
case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE_OWNER_FALSE:
|
|
case PHYSICAL_PRESENCE_DEFERRED_PP_UNOWNERED_FIELD_UPGRADE:
|
|
case PHYSICAL_PRESENCE_CLEAR_ENABLE_ACTIVATE:
|
|
case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR:
|
|
case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR_ENABLE_ACTIVATE:
|
|
break;
|
|
default:
|
|
if (TcgPpData->LastPPRequest >= TCG_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {
|
|
if (ResetRequired) {
|
|
break;
|
|
} else {
|
|
return ;
|
|
}
|
|
}
|
|
if (TcgPpData->PPRequest != PHYSICAL_PRESENCE_NO_ACTION) {
|
|
break;
|
|
}
|
|
return;
|
|
}
|
|
|
|
Print (L"Rebooting system to make TPM settings in effect\n");
|
|
gRT->ResetSystem (EfiResetCold, EFI_SUCCESS, 0, NULL);
|
|
ASSERT (FALSE);
|
|
}
|
|
|
|
/**
|
|
Check and execute the pending TPM request and Lock TPM.
|
|
|
|
The TPM request may come from OS or BIOS. This API will display request information and wait
|
|
for user confirmation if TPM request exists. The TPM request will be sent to TPM device after
|
|
the TPM request is confirmed, and one or more reset may be required to make TPM request to
|
|
take effect. At last, it will lock TPM to prevent TPM state change by malware.
|
|
|
|
This API should be invoked after console in and console out are all ready as they are required
|
|
to display request information and get user input to confirm the request. This API should also
|
|
be invoked as early as possible as TPM is locked in this function.
|
|
|
|
**/
|
|
VOID
|
|
EFIAPI
|
|
TcgPhysicalPresenceLibProcessRequest (
|
|
VOID
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
BOOLEAN LifetimeLock;
|
|
BOOLEAN CmdEnable;
|
|
UINTN DataSize;
|
|
EFI_PHYSICAL_PRESENCE TcgPpData;
|
|
EFI_TCG_PROTOCOL *TcgProtocol;
|
|
EDKII_VARIABLE_LOCK_PROTOCOL *VariableLockProtocol;
|
|
EFI_PHYSICAL_PRESENCE_FLAGS PpiFlags;
|
|
|
|
Status = gBS->LocateProtocol (&gEfiTcgProtocolGuid, NULL, (VOID **)&TcgProtocol);
|
|
if (EFI_ERROR (Status)) {
|
|
return ;
|
|
}
|
|
|
|
//
|
|
// Initialize physical presence flags.
|
|
//
|
|
DataSize = sizeof (EFI_PHYSICAL_PRESENCE_FLAGS);
|
|
Status = gRT->GetVariable (
|
|
PHYSICAL_PRESENCE_FLAGS_VARIABLE,
|
|
&gEfiPhysicalPresenceGuid,
|
|
NULL,
|
|
&DataSize,
|
|
&PpiFlags
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
PpiFlags.PPFlags = TCG_BIOS_TPM_MANAGEMENT_FLAG_NO_PPI_PROVISION;
|
|
Status = gRT->SetVariable (
|
|
PHYSICAL_PRESENCE_FLAGS_VARIABLE,
|
|
&gEfiPhysicalPresenceGuid,
|
|
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
|
|
sizeof (EFI_PHYSICAL_PRESENCE_FLAGS),
|
|
&PpiFlags
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
DEBUG ((EFI_D_ERROR, "[TPM] Set physical presence flag failed, Status = %r\n", Status));
|
|
return ;
|
|
}
|
|
}
|
|
DEBUG ((EFI_D_INFO, "[TPM] PpiFlags = %x\n", PpiFlags.PPFlags));
|
|
|
|
//
|
|
// This flags variable controls whether physical presence is required for TPM command.
|
|
// It should be protected from malicious software. We set it as read-only variable here.
|
|
//
|
|
Status = gBS->LocateProtocol (&gEdkiiVariableLockProtocolGuid, NULL, (VOID **)&VariableLockProtocol);
|
|
if (!EFI_ERROR (Status)) {
|
|
Status = VariableLockProtocol->RequestToLock (
|
|
VariableLockProtocol,
|
|
PHYSICAL_PRESENCE_FLAGS_VARIABLE,
|
|
&gEfiPhysicalPresenceGuid
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
DEBUG ((EFI_D_ERROR, "[TPM] Error when lock variable %s, Status = %r\n", PHYSICAL_PRESENCE_FLAGS_VARIABLE, Status));
|
|
ASSERT_EFI_ERROR (Status);
|
|
}
|
|
}
|
|
|
|
//
|
|
// Initialize physical presence variable.
|
|
//
|
|
DataSize = sizeof (EFI_PHYSICAL_PRESENCE);
|
|
Status = gRT->GetVariable (
|
|
PHYSICAL_PRESENCE_VARIABLE,
|
|
&gEfiPhysicalPresenceGuid,
|
|
NULL,
|
|
&DataSize,
|
|
&TcgPpData
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
ZeroMem ((VOID*)&TcgPpData, sizeof (TcgPpData));
|
|
DataSize = sizeof (EFI_PHYSICAL_PRESENCE);
|
|
Status = gRT->SetVariable (
|
|
PHYSICAL_PRESENCE_VARIABLE,
|
|
&gEfiPhysicalPresenceGuid,
|
|
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
|
|
DataSize,
|
|
&TcgPpData
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
DEBUG ((EFI_D_ERROR, "[TPM] Set physical presence variable failed, Status = %r\n", Status));
|
|
return;
|
|
}
|
|
}
|
|
|
|
DEBUG ((EFI_D_INFO, "[TPM] Flags=%x, PPRequest=%x\n", PpiFlags.PPFlags, TcgPpData.PPRequest));
|
|
|
|
if (TcgPpData.PPRequest == PHYSICAL_PRESENCE_NO_ACTION) {
|
|
//
|
|
// No operation request
|
|
//
|
|
return;
|
|
}
|
|
|
|
Status = GetTpmCapability (TcgProtocol, &LifetimeLock, &CmdEnable);
|
|
if (EFI_ERROR (Status)) {
|
|
return ;
|
|
}
|
|
|
|
if (!CmdEnable) {
|
|
if (LifetimeLock) {
|
|
//
|
|
// physicalPresenceCMDEnable is locked, can't execute physical presence command.
|
|
//
|
|
return ;
|
|
}
|
|
Status = TpmPhysicalPresence (TcgProtocol, TPM_PHYSICAL_PRESENCE_CMD_ENABLE);
|
|
if (EFI_ERROR (Status)) {
|
|
return ;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Set operator physical presence flags
|
|
//
|
|
TpmPhysicalPresence (TcgProtocol, TPM_PHYSICAL_PRESENCE_PRESENT);
|
|
|
|
//
|
|
// Execute pending TPM request.
|
|
//
|
|
ExecutePendingTpmRequest (TcgProtocol, &TcgPpData, PpiFlags);
|
|
DEBUG ((EFI_D_INFO, "[TPM] PPResponse = %x\n", TcgPpData.PPResponse));
|
|
|
|
//
|
|
// Lock physical presence.
|
|
//
|
|
TpmPhysicalPresence (TcgProtocol, TPM_PHYSICAL_PRESENCE_NOTPRESENT | TPM_PHYSICAL_PRESENCE_LOCK);
|
|
}
|
|
|
|
/**
|
|
Check if the pending TPM request needs user input to confirm.
|
|
|
|
The TPM request may come from OS. This API will check if TPM request exists and need user
|
|
input to confirmation.
|
|
|
|
@retval TRUE TPM needs input to confirm user physical presence.
|
|
@retval FALSE TPM doesn't need input to confirm user physical presence.
|
|
|
|
**/
|
|
BOOLEAN
|
|
EFIAPI
|
|
TcgPhysicalPresenceLibNeedUserConfirm(
|
|
VOID
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
EFI_PHYSICAL_PRESENCE TcgPpData;
|
|
UINTN DataSize;
|
|
BOOLEAN RequestConfirmed;
|
|
BOOLEAN LifetimeLock;
|
|
BOOLEAN CmdEnable;
|
|
EFI_TCG_PROTOCOL *TcgProtocol;
|
|
EFI_PHYSICAL_PRESENCE_FLAGS PpiFlags;
|
|
|
|
Status = gBS->LocateProtocol (&gEfiTcgProtocolGuid, NULL, (VOID **)&TcgProtocol);
|
|
if (EFI_ERROR (Status)) {
|
|
return FALSE;
|
|
}
|
|
|
|
//
|
|
// Check Tpm requests
|
|
//
|
|
DataSize = sizeof (EFI_PHYSICAL_PRESENCE);
|
|
Status = gRT->GetVariable (
|
|
PHYSICAL_PRESENCE_VARIABLE,
|
|
&gEfiPhysicalPresenceGuid,
|
|
NULL,
|
|
&DataSize,
|
|
&TcgPpData
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
return FALSE;
|
|
}
|
|
|
|
DataSize = sizeof (EFI_PHYSICAL_PRESENCE_FLAGS);
|
|
Status = gRT->GetVariable (
|
|
PHYSICAL_PRESENCE_FLAGS_VARIABLE,
|
|
&gEfiPhysicalPresenceGuid,
|
|
NULL,
|
|
&DataSize,
|
|
&PpiFlags
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
return FALSE;
|
|
}
|
|
|
|
if (TcgPpData.PPRequest == PHYSICAL_PRESENCE_NO_ACTION) {
|
|
//
|
|
// No operation request
|
|
//
|
|
return FALSE;
|
|
}
|
|
|
|
if (!HaveValidTpmRequest(&TcgPpData, PpiFlags, &RequestConfirmed)) {
|
|
//
|
|
// Invalid operation request.
|
|
//
|
|
return FALSE;
|
|
}
|
|
|
|
//
|
|
// Check Tpm Capability
|
|
//
|
|
Status = GetTpmCapability (TcgProtocol, &LifetimeLock, &CmdEnable);
|
|
if (EFI_ERROR (Status)) {
|
|
return FALSE;
|
|
}
|
|
|
|
if (!CmdEnable) {
|
|
if (LifetimeLock) {
|
|
//
|
|
// physicalPresenceCMDEnable is locked, can't execute physical presence command.
|
|
//
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
if (!RequestConfirmed) {
|
|
//
|
|
// Need UI to confirm
|
|
//
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|