/********************************************************************************/
/*										*/
/*		Simulates the Physical Present Interface	     		*/
/*			     Written by Ken Goldman				*/
/*		       IBM Thomas J. Watson Research Center			*/
/*            $Id: PPPlat.c 1490 2019-07-26 21:13:22Z kgoldman $		*/
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/********************************************************************************/

/* C.10 PPPlat.c */
/* C.10.1. Description */
/* This module simulates the physical presence interface pins on the TPM. */
/* C.10.2. Includes */
#include "Platform.h"
#include "LibtpmsCallbacks.h" /* libtpms added */
/* C.10.3. Functions */
/* C.10.3.1. _plat__PhysicalPresenceAsserted() */
/* Check if physical presence is signaled */
/* Return Values Meaning */
/* TRUE(1) if physical presence is signaled */
/* FALSE(0) if physical presence is not signaled */
LIB_EXPORT int
_plat__PhysicalPresenceAsserted(
				void
				)
{
#ifdef TPM_LIBTPMS_CALLBACKS
    BOOL pp;
    int ret = libtpms_plat__PhysicalPresenceAsserted(&pp);

    if (ret != LIBTPMS_CALLBACK_FALLTHROUGH)
        return pp;
#endif /* TPM_LIBTPMS_CALLBACKS */

    // Do not know how to check physical presence without real hardware.
    // so always return TRUE;
    return s_physicalPresence;
}
#if 0 /* libtpms added */
/* C.10.3.2. _plat__Signal_PhysicalPresenceOn() */
/* Signal physical presence on */
LIB_EXPORT void
_plat__Signal_PhysicalPresenceOn(
				 void
				 )
{
    s_physicalPresence = TRUE;
    return;
}
/* C.10.3.3. _plat__Signal_PhysicalPresenceOff() */
/* Signal physical presence off */
LIB_EXPORT void
_plat__Signal_PhysicalPresenceOff(
				  void
				  )
{
    s_physicalPresence = FALSE;
    return;
}
#endif /* libtpms added */