libtpms/src/tpm2/PlatformData.h

/********************************************************************************/
/*										*/
/*		Instance data for the Platform module. 				*/
/*			     Written by Ken Goldman				*/
/*		       IBM Thomas J. Watson Research Center			*/
/*            $Id: PlatformData.h 1529 2019-11-21 23:29:01Z kgoldman $		*/
/*										*/
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/********************************************************************************/

/* c.8 PlatformData.h */
/* This file contains the instance data for the Platform module. It is collected in this file so
   that the state of the module is easier to manage. */

#ifndef _PLATFORM_DATA_H_
#define _PLATFORM_DATA_H_
#ifdef  _PLATFORM_DATA_C_
#define EXTERN
#else
#define EXTERN  extern
#endif

/* From Cancel.c Cancel flag.  It is initialized as FALSE, which indicate the command is not being
   canceled */
EXTERN int     s_isCanceled;

#ifndef HARDWARE_CLOCK
typedef uint64_t     clock64_t;
// This is the value returned the last time that the system clock was read. This is only relevant
// for a simulator or virtual TPM.
EXTERN clock64_t        s_realTimePrevious;
// These values are used to try to synthesize a long lived version of clock().
EXTERN clock64_t        s_lastSystemTime;
EXTERN clock64_t        s_lastReportedTime;
// This is the rate adjusted value that is the equivalent of what would be read from a hardware
// register that produced rate adjusted time.
EXTERN clock64_t        s_tpmTime;
/* libtpms added begin */
EXTERN int64_t          s_hostMonotonicAdjustTime;
EXTERN uint64_t         s_suspendedElapsedTime;
/* libtpms added end */
#endif // HARDWARE_CLOCK

/* This value indicates that the timer was reset */
EXTERN int              s_timerReset;
/* This value indicates that the timer was stopped. It causes a clock discontinuity. */
EXTERN int              s_timerStopped;
/* This variable records the time when _plat__TimerReset() is called.  This mechanism allow us to
   subtract the time when TPM is power off from the total time reported by clock() function */
EXTERN uint64_t         s_initClock;
/* This variable records the timer adjustment factor. */
EXTERN unsigned int     s_adjustRate;
/* From LocalityPlat.c Locality of current command */
EXTERN unsigned char s_locality;
/* From NVMem.c Choose if the NV memory should be backed by RAM or by file. If this macro is
   defined, then a file is used as NV.  If it is not defined, then RAM is used to back NV
   memory. Comment out to use RAM. */
#if (!defined VTPM) || ((VTPM != NO) && (VTPM != YES))
#   undef VTPM
#   define      VTPM            NO                 // Default: Either YES or NO   libtpms: NO
#endif

// For a simulation, use a file to back up the NV

#if (!defined FILE_BACKED_NV) || ((FILE_BACKED_NV != NO) && (FILE_BACKED_NV != YES))
#   undef   FILE_BACKED_NV
#   define  FILE_BACKED_NV          (VTPM && YES)     // Default: Either YES or NO
#endif
#if !SIMULATION
#   undef       FILE_BACKED_NV
#   define      FILE_BACKED_NV          YES          // libtpms: write NvChip file if no callbacks are set
#else
#error Do not define SIMULATION for libtpms!
#endif // SIMULATION

EXTERN unsigned char    s_NV[NV_MEMORY_SIZE];
EXTERN int              s_NvIsAvailable;
EXTERN int              s_NV_unrecoverable;
EXTERN int              s_NV_recoverable;

/* From PPPlat.c Physical presence. */
/* It is initialized to FALSE */

EXTERN int        s_physicalPresence;

/* From Power */
EXTERN int        s_powerLost;

/* From Entropy.c */
EXTERN uint32_t        lastEntropy;

#define DEFINE_ACT(N)   EXTERN ACT_DATA ACT_##N;
FOR_EACH_ACT(DEFINE_ACT)
EXTERN int             actTicksAllowed;

#endif // _PLATFORM_DATA_H_