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/** @file
Implement TPM2 Hierarchy related command.
Copyright (c) 2013, 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 <IndustryStandard/UefiTcgPlatform.h>
#include <Library/Tpm2CommandLib.h>
#include <Library/Tpm2DeviceLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#pragma pack(1)
typedef struct {
TPM2_COMMAND_HEADER Header;
TPMI_RH_CLEAR AuthHandle;
UINT32 AuthorizationSize;
TPMS_AUTH_COMMAND AuthSession;
} TPM2_CLEAR_COMMAND;
typedef struct {
TPM2_RESPONSE_HEADER Header;
UINT32 ParameterSize;
TPMS_AUTH_RESPONSE AuthSession;
} TPM2_CLEAR_RESPONSE;
typedef struct {
TPM2_COMMAND_HEADER Header;
TPMI_RH_CLEAR AuthHandle;
UINT32 AuthorizationSize;
TPMS_AUTH_COMMAND AuthSession;
TPMI_YES_NO Disable;
} TPM2_CLEAR_CONTROL_COMMAND;
typedef struct {
TPM2_RESPONSE_HEADER Header;
UINT32 ParameterSize;
TPMS_AUTH_RESPONSE AuthSession;
} TPM2_CLEAR_CONTROL_RESPONSE;
typedef struct {
TPM2_COMMAND_HEADER Header;
TPMI_RH_HIERARCHY_AUTH AuthHandle;
UINT32 AuthorizationSize;
TPMS_AUTH_COMMAND AuthSession;
TPM2B_AUTH NewAuth;
} TPM2_HIERARCHY_CHANGE_AUTH_COMMAND;
typedef struct {
TPM2_RESPONSE_HEADER Header;
UINT32 ParameterSize;
TPMS_AUTH_RESPONSE AuthSession;
} TPM2_HIERARCHY_CHANGE_AUTH_RESPONSE;
typedef struct {
TPM2_COMMAND_HEADER Header;
TPMI_RH_PLATFORM AuthHandle;
UINT32 AuthorizationSize;
TPMS_AUTH_COMMAND AuthSession;
} TPM2_CHANGE_EPS_COMMAND;
typedef struct {
TPM2_RESPONSE_HEADER Header;
UINT32 ParameterSize;
TPMS_AUTH_RESPONSE AuthSession;
} TPM2_CHANGE_EPS_RESPONSE;
typedef struct {
TPM2_COMMAND_HEADER Header;
TPMI_RH_PLATFORM AuthHandle;
UINT32 AuthorizationSize;
TPMS_AUTH_COMMAND AuthSession;
} TPM2_CHANGE_PPS_COMMAND;
typedef struct {
TPM2_RESPONSE_HEADER Header;
UINT32 ParameterSize;
TPMS_AUTH_RESPONSE AuthSession;
} TPM2_CHANGE_PPS_RESPONSE;
typedef struct {
TPM2_COMMAND_HEADER Header;
TPMI_RH_HIERARCHY AuthHandle;
UINT32 AuthorizationSize;
TPMS_AUTH_COMMAND AuthSession;
TPMI_RH_HIERARCHY Hierarchy;
TPMI_YES_NO State;
} TPM2_HIERARCHY_CONTROL_COMMAND;
typedef struct {
TPM2_RESPONSE_HEADER Header;
UINT32 ParameterSize;
TPMS_AUTH_RESPONSE AuthSession;
} TPM2_HIERARCHY_CONTROL_RESPONSE;
#pragma pack()
/**
This command removes all TPM context associated with a specific Owner.
@param[in] AuthHandle TPM_RH_LOCKOUT or TPM_RH_PLATFORM+{PP}
@param[in] AuthSession Auth Session context
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR Unexpected device behavior.
**/
EFI_STATUS
EFIAPI
Tpm2Clear (
IN TPMI_RH_CLEAR AuthHandle,
IN TPMS_AUTH_COMMAND *AuthSession OPTIONAL
)
{
EFI_STATUS Status;
TPM2_CLEAR_COMMAND Cmd;
TPM2_CLEAR_RESPONSE Res;
UINT32 ResultBufSize;
UINT32 CmdSize;
UINT32 RespSize;
UINT8 *Buffer;
UINT32 SessionInfoSize;
Cmd.Header.tag = SwapBytes16(TPM_ST_SESSIONS);
Cmd.Header.commandCode = SwapBytes32(TPM_CC_Clear);
Cmd.AuthHandle = SwapBytes32(AuthHandle);
//
// Add in Auth session
//
Buffer = (UINT8 *)&Cmd.AuthSession;
// sessionInfoSize
SessionInfoSize = CopyAuthSessionCommand (AuthSession, Buffer);
Buffer += SessionInfoSize;
Cmd.AuthorizationSize = SwapBytes32(SessionInfoSize);
CmdSize = (UINT32)(Buffer - (UINT8 *)&Cmd);
Cmd.Header.paramSize = SwapBytes32(CmdSize);
ResultBufSize = sizeof(Res);
Status = Tpm2SubmitCommand (CmdSize, (UINT8 *)&Cmd, &ResultBufSize, (UINT8 *)&Res);
if (EFI_ERROR(Status)) {
return Status;
}
if (ResultBufSize > sizeof(Res)) {
DEBUG ((EFI_D_ERROR, "Clear: Failed ExecuteCommand: Buffer Too Small\r\n"));
return EFI_BUFFER_TOO_SMALL;
}
//
// Validate response headers
//
RespSize = SwapBytes32(Res.Header.paramSize);
if (RespSize > sizeof(Res)) {
DEBUG ((EFI_D_ERROR, "Clear: Response size too large! %d\r\n", RespSize));
return EFI_BUFFER_TOO_SMALL;
}
//
// Fail if command failed
//
if (SwapBytes32(Res.Header.responseCode) != TPM_RC_SUCCESS) {
DEBUG ((EFI_D_ERROR, "Clear: Response Code error! 0x%08x\r\n", SwapBytes32(Res.Header.responseCode)));
return EFI_DEVICE_ERROR;
}
//
// Unmarshal the response
//
// None
return EFI_SUCCESS;
}
/**
Disables and enables the execution of TPM2_Clear().
@param[in] AuthHandle TPM_RH_LOCKOUT or TPM_RH_PLATFORM+{PP}
@param[in] AuthSession Auth Session context
@param[in] Disable YES if the disableOwnerClear flag is to be SET,
NO if the flag is to be CLEAR.
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR Unexpected device behavior.
**/
EFI_STATUS
EFIAPI
Tpm2ClearControl (
IN TPMI_RH_CLEAR AuthHandle,
IN TPMS_AUTH_COMMAND *AuthSession, OPTIONAL
IN TPMI_YES_NO Disable
)
{
EFI_STATUS Status;
TPM2_CLEAR_CONTROL_COMMAND Cmd;
TPM2_CLEAR_CONTROL_RESPONSE Res;
UINT32 ResultBufSize;
UINT32 CmdSize;
UINT32 RespSize;
UINT8 *Buffer;
UINT32 SessionInfoSize;
Cmd.Header.tag = SwapBytes16(TPM_ST_SESSIONS);
Cmd.Header.commandCode = SwapBytes32(TPM_CC_ClearControl);
Cmd.AuthHandle = SwapBytes32(AuthHandle);
//
// Add in Auth session
//
Buffer = (UINT8 *)&Cmd.AuthSession;
// sessionInfoSize
SessionInfoSize = CopyAuthSessionCommand (AuthSession, Buffer);
Buffer += SessionInfoSize;
Cmd.AuthorizationSize = SwapBytes32(SessionInfoSize);
// disable
*(UINT8 *)Buffer = Disable;
Buffer += sizeof(UINT8);
CmdSize = (UINT32)(Buffer - (UINT8 *)&Cmd);
Cmd.Header.paramSize = SwapBytes32(CmdSize);
ResultBufSize = sizeof(Res);
Status = Tpm2SubmitCommand (CmdSize, (UINT8 *)&Cmd, &ResultBufSize, (UINT8 *)&Res);
if (EFI_ERROR(Status)) {
return Status;
}
if (ResultBufSize > sizeof(Res)) {
DEBUG ((EFI_D_ERROR, "ClearControl: Failed ExecuteCommand: Buffer Too Small\r\n"));
return EFI_BUFFER_TOO_SMALL;
}
//
// Validate response headers
//
RespSize = SwapBytes32(Res.Header.paramSize);
if (RespSize > sizeof(Res)) {
DEBUG ((EFI_D_ERROR, "ClearControl: Response size too large! %d\r\n", RespSize));
return EFI_BUFFER_TOO_SMALL;
}
//
// Fail if command failed
//
if (SwapBytes32(Res.Header.responseCode) != TPM_RC_SUCCESS) {
DEBUG ((EFI_D_ERROR, "ClearControl: Response Code error! 0x%08x\r\n", SwapBytes32(Res.Header.responseCode)));
return EFI_DEVICE_ERROR;
}
//
// Unmarshal the response
//
// None
return EFI_SUCCESS;
}
/**
This command allows the authorization secret for a hierarchy or lockout to be changed using the current
authorization value as the command authorization.
@param[in] AuthHandle TPM_RH_LOCKOUT, TPM_RH_ENDORSEMENT, TPM_RH_OWNER or TPM_RH_PLATFORM+{PP}
@param[in] AuthSession Auth Session context
@param[in] NewAuth New authorization secret
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR Unexpected device behavior.
**/
EFI_STATUS
EFIAPI
Tpm2HierarchyChangeAuth (
IN TPMI_RH_HIERARCHY_AUTH AuthHandle,
IN TPMS_AUTH_COMMAND *AuthSession,
IN TPM2B_AUTH *NewAuth
)
{
EFI_STATUS Status;
TPM2_HIERARCHY_CHANGE_AUTH_COMMAND Cmd;
TPM2_HIERARCHY_CHANGE_AUTH_RESPONSE Res;
UINT32 CmdSize;
UINT32 RespSize;
UINT8 *Buffer;
UINT32 SessionInfoSize;
UINT8 *ResultBuf;
UINT32 ResultBufSize;
//
// Construct command
//
Cmd.Header.tag = SwapBytes16(TPM_ST_SESSIONS);
Cmd.Header.paramSize = SwapBytes32(sizeof(Cmd));
Cmd.Header.commandCode = SwapBytes32(TPM_CC_HierarchyChangeAuth);
Cmd.AuthHandle = SwapBytes32(AuthHandle);
//
// Add in Auth session
//
Buffer = (UINT8 *)&Cmd.AuthSession;
// sessionInfoSize
SessionInfoSize = CopyAuthSessionCommand (AuthSession, Buffer);
Buffer += SessionInfoSize;
Cmd.AuthorizationSize = SwapBytes32(SessionInfoSize);
// New Authorization size
WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16(NewAuth->size));
Buffer += sizeof(UINT16);
// New Authorizeation
CopyMem(Buffer, NewAuth->buffer, NewAuth->size);
Buffer += NewAuth->size;
CmdSize = (UINT32)(Buffer - (UINT8 *)&Cmd);
Cmd.Header.paramSize = SwapBytes32(CmdSize);
ResultBuf = (UINT8 *) &Res;
ResultBufSize = sizeof(Res);
//
// Call the TPM
//
Status = Tpm2SubmitCommand (
CmdSize,
(UINT8 *)&Cmd,
&ResultBufSize,
ResultBuf
);
if (ResultBufSize > sizeof(Res)) {
DEBUG ((EFI_D_ERROR, "HierarchyChangeAuth: Failed ExecuteCommand: Buffer Too Small\r\n"));
return EFI_BUFFER_TOO_SMALL;
}
//
// Validate response headers
//
RespSize = SwapBytes32(Res.Header.paramSize);
if (RespSize > sizeof(Res)) {
DEBUG ((EFI_D_ERROR, "HierarchyChangeAuth: Response size too large! %d\r\n", RespSize));
return EFI_BUFFER_TOO_SMALL;
}
//
// Fail if command failed
//
if (SwapBytes32(Res.Header.responseCode) != TPM_RC_SUCCESS) {
DEBUG((EFI_D_ERROR,"HierarchyChangeAuth: Response Code error! 0x%08x\r\n", SwapBytes32(Res.Header.responseCode)));
return EFI_DEVICE_ERROR;
}
return EFI_SUCCESS;
}
/**
This replaces the current EPS with a value from the RNG and sets the Endorsement hierarchy controls to
their default initialization values.
@param[in] AuthHandle TPM_RH_PLATFORM+{PP}
@param[in] AuthSession Auth Session context
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR Unexpected device behavior.
**/
EFI_STATUS
EFIAPI
Tpm2ChangeEPS (
IN TPMI_RH_PLATFORM AuthHandle,
IN TPMS_AUTH_COMMAND *AuthSession
)
{
EFI_STATUS Status;
TPM2_CHANGE_EPS_COMMAND Cmd;
TPM2_CHANGE_EPS_RESPONSE Res;
UINT32 CmdSize;
UINT32 RespSize;
UINT8 *Buffer;
UINT32 SessionInfoSize;
UINT8 *ResultBuf;
UINT32 ResultBufSize;
//
// Construct command
//
Cmd.Header.tag = SwapBytes16(TPM_ST_SESSIONS);
Cmd.Header.paramSize = SwapBytes32(sizeof(Cmd));
Cmd.Header.commandCode = SwapBytes32(TPM_CC_ChangeEPS);
Cmd.AuthHandle = SwapBytes32(AuthHandle);
//
// Add in Auth session
//
Buffer = (UINT8 *)&Cmd.AuthSession;
// sessionInfoSize
SessionInfoSize = CopyAuthSessionCommand (AuthSession, Buffer);
Buffer += SessionInfoSize;
Cmd.AuthorizationSize = SwapBytes32(SessionInfoSize);
CmdSize = (UINT32)(Buffer - (UINT8 *)&Cmd);
Cmd.Header.paramSize = SwapBytes32(CmdSize);
ResultBuf = (UINT8 *) &Res;
ResultBufSize = sizeof(Res);
//
// Call the TPM
//
Status = Tpm2SubmitCommand (
CmdSize,
(UINT8 *)&Cmd,
&ResultBufSize,
ResultBuf
);
if (ResultBufSize > sizeof(Res)) {
DEBUG ((EFI_D_ERROR, "ChangeEPS: Failed ExecuteCommand: Buffer Too Small\r\n"));
return EFI_BUFFER_TOO_SMALL;
}
//
// Validate response headers
//
RespSize = SwapBytes32(Res.Header.paramSize);
if (RespSize > sizeof(Res)) {
DEBUG ((EFI_D_ERROR, "ChangeEPS: Response size too large! %d\r\n", RespSize));
return EFI_BUFFER_TOO_SMALL;
}
//
// Fail if command failed
//
if (SwapBytes32(Res.Header.responseCode) != TPM_RC_SUCCESS) {
DEBUG((EFI_D_ERROR,"ChangeEPS: Response Code error! 0x%08x\r\n", SwapBytes32(Res.Header.responseCode)));
return EFI_DEVICE_ERROR;
}
return EFI_SUCCESS;
}
/**
This replaces the current PPS with a value from the RNG and sets platformPolicy to the default
initialization value (the Empty Buffer).
@param[in] AuthHandle TPM_RH_PLATFORM+{PP}
@param[in] AuthSession Auth Session context
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR Unexpected device behavior.
**/
EFI_STATUS
EFIAPI
Tpm2ChangePPS (
IN TPMI_RH_PLATFORM AuthHandle,
IN TPMS_AUTH_COMMAND *AuthSession
)
{
EFI_STATUS Status;
TPM2_CHANGE_PPS_COMMAND Cmd;
TPM2_CHANGE_PPS_RESPONSE Res;
UINT32 CmdSize;
UINT32 RespSize;
UINT8 *Buffer;
UINT32 SessionInfoSize;
UINT8 *ResultBuf;
UINT32 ResultBufSize;
//
// Construct command
//
Cmd.Header.tag = SwapBytes16(TPM_ST_SESSIONS);
Cmd.Header.paramSize = SwapBytes32(sizeof(Cmd));
Cmd.Header.commandCode = SwapBytes32(TPM_CC_ChangePPS);
Cmd.AuthHandle = SwapBytes32(AuthHandle);
//
// Add in Auth session
//
Buffer = (UINT8 *)&Cmd.AuthSession;
// sessionInfoSize
SessionInfoSize = CopyAuthSessionCommand (AuthSession, Buffer);
Buffer += SessionInfoSize;
Cmd.AuthorizationSize = SwapBytes32(SessionInfoSize);
CmdSize = (UINT32)(Buffer - (UINT8 *)&Cmd);
Cmd.Header.paramSize = SwapBytes32(CmdSize);
ResultBuf = (UINT8 *) &Res;
ResultBufSize = sizeof(Res);
//
// Call the TPM
//
Status = Tpm2SubmitCommand (
CmdSize,
(UINT8 *)&Cmd,
&ResultBufSize,
ResultBuf
);
if (ResultBufSize > sizeof(Res)) {
DEBUG ((EFI_D_ERROR, "ChangePPS: Failed ExecuteCommand: Buffer Too Small\r\n"));
return EFI_BUFFER_TOO_SMALL;
}
//
// Validate response headers
//
RespSize = SwapBytes32(Res.Header.paramSize);
if (RespSize > sizeof(Res)) {
DEBUG ((EFI_D_ERROR, "ChangePPS: Response size too large! %d\r\n", RespSize));
return EFI_BUFFER_TOO_SMALL;
}
//
// Fail if command failed
//
if (SwapBytes32(Res.Header.responseCode) != TPM_RC_SUCCESS) {
DEBUG((EFI_D_ERROR,"ChangePPS: Response Code error! 0x%08x\r\n", SwapBytes32(Res.Header.responseCode)));
return EFI_DEVICE_ERROR;
}
return EFI_SUCCESS;
}
/**
This command enables and disables use of a hierarchy.
@param[in] AuthHandle TPM_RH_ENDORSEMENT, TPM_RH_OWNER or TPM_RH_PLATFORM+{PP}
@param[in] AuthSession Auth Session context
@param[in] Hierarchy Hierarchy of the enable being modified
@param[in] State YES if the enable should be SET,
NO if the enable should be CLEAR
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR Unexpected device behavior.
**/
EFI_STATUS
EFIAPI
Tpm2HierarchyControl (
IN TPMI_RH_HIERARCHY AuthHandle,
IN TPMS_AUTH_COMMAND *AuthSession,
IN TPMI_RH_HIERARCHY Hierarchy,
IN TPMI_YES_NO State
)
{
EFI_STATUS Status;
TPM2_HIERARCHY_CONTROL_COMMAND Cmd;
TPM2_HIERARCHY_CONTROL_RESPONSE Res;
UINT32 CmdSize;
UINT32 RespSize;
UINT8 *Buffer;
UINT32 SessionInfoSize;
UINT8 *ResultBuf;
UINT32 ResultBufSize;
//
// Construct command
//
Cmd.Header.tag = SwapBytes16(TPM_ST_SESSIONS);
Cmd.Header.paramSize = SwapBytes32(sizeof(Cmd));
Cmd.Header.commandCode = SwapBytes32(TPM_CC_HierarchyControl);
Cmd.AuthHandle = SwapBytes32(AuthHandle);
//
// Add in Auth session
//
Buffer = (UINT8 *)&Cmd.AuthSession;
// sessionInfoSize
SessionInfoSize = CopyAuthSessionCommand (AuthSession, Buffer);
Buffer += SessionInfoSize;
Cmd.AuthorizationSize = SwapBytes32(SessionInfoSize);
WriteUnaligned32 ((UINT32 *)Buffer, SwapBytes32(Hierarchy));
Buffer += sizeof(UINT32);
*(UINT8 *)Buffer = State;
Buffer += sizeof(UINT8);
CmdSize = (UINT32)(Buffer - (UINT8 *)&Cmd);
Cmd.Header.paramSize = SwapBytes32(CmdSize);
ResultBuf = (UINT8 *) &Res;
ResultBufSize = sizeof(Res);
//
// Call the TPM
//
Status = Tpm2SubmitCommand (
CmdSize,
(UINT8 *)&Cmd,
&ResultBufSize,
ResultBuf
);
if (ResultBufSize > sizeof(Res)) {
DEBUG ((EFI_D_ERROR, "HierarchyControl: Failed ExecuteCommand: Buffer Too Small\r\n"));
return EFI_BUFFER_TOO_SMALL;
}
//
// Validate response headers
//
RespSize = SwapBytes32(Res.Header.paramSize);
if (RespSize > sizeof(Res)) {
DEBUG ((EFI_D_ERROR, "HierarchyControl: Response size too large! %d\r\n", RespSize));
return EFI_BUFFER_TOO_SMALL;
}
//
// Fail if command failed
//
if (SwapBytes32(Res.Header.responseCode) != TPM_RC_SUCCESS) {
DEBUG((EFI_D_ERROR,"HierarchyControl: Response Code error! 0x%08x\r\n", SwapBytes32(Res.Header.responseCode)));
return EFI_DEVICE_ERROR;
}
return EFI_SUCCESS;
}
|
