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https://github.com/stefanberger/libtpms
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156 lines
7.5 KiB
C
156 lines
7.5 KiB
C
/********************************************************************************/
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/* */
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/* Instance data for the Platform module. */
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/* Written by Ken Goldman */
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/* IBM Thomas J. Watson Research Center */
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/* $Id: PlatformData.h 1370 2018-11-02 19:39:07Z kgoldman $ */
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/* */
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/* Licenses and Notices */
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/* */
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/* 1. Copyright Licenses: */
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/* */
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/* - Trusted Computing Group (TCG) grants to the user of the source code in */
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/* this specification (the "Source Code") a worldwide, irrevocable, */
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/* nonexclusive, royalty free, copyright license to reproduce, create */
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/* derivative works, distribute, display and perform the Source Code and */
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/* derivative works thereof, and to grant others the rights granted herein. */
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/* */
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/* - The TCG grants to the user of the other parts of the specification */
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/* (other than the Source Code) the rights to reproduce, distribute, */
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/* display, and perform the specification solely for the purpose of */
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/* developing products based on such documents. */
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/* */
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/* 2. Source Code Distribution Conditions: */
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/* */
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/* - Redistributions of Source Code must retain the above copyright licenses, */
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/* this list of conditions and the following disclaimers. */
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/* */
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/* - Redistributions in binary form must reproduce the above copyright */
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/* licenses, this list of conditions and the following disclaimers in the */
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/* documentation and/or other materials provided with the distribution. */
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/* */
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/* 3. Disclaimers: */
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/* */
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/* - THE COPYRIGHT LICENSES SET FORTH ABOVE DO NOT REPRESENT ANY FORM OF */
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/* LICENSE OR WAIVER, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, WITH */
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/* RESPECT TO PATENT RIGHTS HELD BY TCG MEMBERS (OR OTHER THIRD PARTIES) */
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/* THAT MAY BE NECESSARY TO IMPLEMENT THIS SPECIFICATION OR OTHERWISE. */
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/* Contact TCG Administration (admin@trustedcomputinggroup.org) for */
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/* information on specification licensing rights available through TCG */
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/* membership agreements. */
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/* */
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/* - THIS SPECIFICATION IS PROVIDED "AS IS" WITH NO EXPRESS OR IMPLIED */
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/* WARRANTIES WHATSOEVER, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR */
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/* FITNESS FOR A PARTICULAR PURPOSE, ACCURACY, COMPLETENESS, OR */
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/* NONINFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS, OR ANY WARRANTY */
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/* OTHERWISE ARISING OUT OF ANY PROPOSAL, SPECIFICATION OR SAMPLE. */
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/* */
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/* - Without limitation, TCG and its members and licensors disclaim all */
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/* liability, including liability for infringement of any proprietary */
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/* rights, relating to use of information in this specification and to the */
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/* implementation of this specification, and TCG disclaims all liability for */
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/* cost of procurement of substitute goods or services, lost profits, loss */
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/* of use, loss of data or any incidental, consequential, direct, indirect, */
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/* or special damages, whether under contract, tort, warranty or otherwise, */
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/* arising in any way out of use or reliance upon this specification or any */
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/* information herein. */
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/* */
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/* (c) Copyright IBM Corp. and others, 2016 - 2018. */
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/* */
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/********************************************************************************/
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/* A.1 PlatformData.h */
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/* This file contains the instance data for the Platform module. It is collected in this file so
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that the state of the module is easier to manage. */
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#ifndef _PLATFORM_DATA_H_
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#define _PLATFORM_DATA_H_
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#include "Implementation.h"
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/* From Cancel.c Cancel flag. It is initialized as FALSE, which indicate the command is not being
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canceled */
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extern int s_isCanceled;
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#ifdef _MSC_VER
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#include <sys/types.h>
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#include <sys/timeb.h>
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#else
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#include <sys/time.h>
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#include <time.h>
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#endif
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#ifndef HARDWARE_CLOCK
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typedef uint64_t clock64_t;
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// This is the value returned the last time that the system clock was read. This is only relevant
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// for a simulator or virtual TPM.
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extern clock64_t s_realTimePrevious;
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// These values are used to try to synthesize a long lived version of clock().
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extern clock64_t s_lastSystemTime;
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extern clock64_t s_lastReportedTime;
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// This is the rate adjusted value that is the equivalent of what would be read from a hardware
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// register that produced rate adjusted time.
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extern clock64_t s_tpmTime;
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/* libtpms added begin */
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extern int64_t s_hostMonotonicAdjustTime;
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extern uint64_t s_suspendedElapsedTime;
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/* libtpms added end */
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#endif // HARDWARE_CLOCK
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/* This value indicates that the timer was reset */
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extern BOOL s_timerReset;
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/* This value indicates that the timer was stopped. It causes a clock discontinuity. */
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extern BOOL s_timerStopped;
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/* CLOCK_NOMINAL is the number of hardware ticks per mS. A value of 300000 means that the nominal
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clock rate used to drive the hardware clock is 30 MHz(). The adjustment rates are used to
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determine the conversion of the hardware ticks to internal hardware clock value. In practice, we
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would expect that there would be a hardware register will accumulated mS. It would be incremented
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by the output of a pre-scaler. The pre-scaler would divide the ticks from the clock by some value
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that would compensate for the difference between clock time and real time. The code in Clock does
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the emulation of this function.*/
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#define CLOCK_NOMINAL 30000
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/* A 1% change in rate is 300 counts */
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#define CLOCK_ADJUST_COARSE 300
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/* A 0.1% change in rate is 30 counts */
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#define CLOCK_ADJUST_MEDIUM 30
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/* A minimum change in rate is 1 count */
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#define CLOCK_ADJUST_FINE 1
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/* The clock tolerance is +/-15% (4500 counts) Allow some guard band (16.7%) */
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#define CLOCK_ADJUST_LIMIT 5000
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/* This variable records the time when _plat__TimerReset() is called. This mechanism allow us to
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subtract the time when TPM is power off from the total time reported by clock() function */
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extern uint64_t s_initClock;
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/* This variable records the timer adjustment factor. */
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extern unsigned int s_adjustRate;
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/* From LocalityPlat.c Locality of current command */
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extern unsigned char s_locality;
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/* From NVMem.c Choose if the NV memory should be backed by RAM or by file. If this macro is
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defined, then a file is used as NV. If it is not defined, then RAM is used to back NV
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memory. Comment out to use RAM. */
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#if (!defined VTPM) || ((VTPM != NO) && (VTPM != YES))
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# undef VTPM
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# define VTPM NO // Default: Either YES or NO libtpms: NO
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#endif
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// For a simulation, use a file to back up the NV
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#if (!defined FILE_BACKED_NV) || ((FILE_BACKED_NV != NO) && (FILE_BACKED_NV != YES))
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# undef FILE_BACKED_NV
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# define FILE_BACKED_NV (VTPM && YES) // Default: Either YES or NO
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#endif
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#if !SIMULATION
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# undef FILE_BACKED_NV
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# define FILE_BACKED_NV YES // libtpms: write NvChip file if no callbacks are set
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#else
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#error Do not define SIMULATION for libtpms!
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#endif // SIMULATION
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extern unsigned char s_NV[NV_MEMORY_SIZE];
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extern BOOL s_NvIsAvailable;
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extern BOOL s_NV_unrecoverable;
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extern BOOL s_NV_recoverable;
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/* From PPPlat.c Physical presence. It is initialized to FALSE */
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extern BOOL s_physicalPresence;
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/* From Power */
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extern BOOL s_powerLost;
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/* From Entropy.c */
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extern uint32_t lastEntropy;
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#endif // _PLATFORM_DATA_H_
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