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/********************************************************************************/
/* */
/* 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 $ */
/* */
/* Licenses and Notices */
/* */
/* 1. Copyright Licenses: */
/* */
/* - Trusted Computing Group (TCG) grants to the user of the source code in */
/* this specification (the "Source Code") a worldwide, irrevocable, */
/* nonexclusive, royalty free, copyright license to reproduce, create */
/* derivative works, distribute, display and perform the Source Code and */
/* derivative works thereof, and to grant others the rights granted herein. */
/* */
/* - The TCG grants to the user of the other parts of the specification */
/* (other than the Source Code) the rights to reproduce, distribute, */
/* display, and perform the specification solely for the purpose of */
/* developing products based on such documents. */
/* */
/* 2. Source Code Distribution Conditions: */
/* */
/* - Redistributions of Source Code must retain the above copyright licenses, */
/* this list of conditions and the following disclaimers. */
/* */
/* - Redistributions in binary form must reproduce the above copyright */
/* licenses, this list of conditions and the following disclaimers in the */
/* documentation and/or other materials provided with the distribution. */
/* */
/* 3. Disclaimers: */
/* */
/* - THE COPYRIGHT LICENSES SET FORTH ABOVE DO NOT REPRESENT ANY FORM OF */
/* LICENSE OR WAIVER, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, WITH */
/* RESPECT TO PATENT RIGHTS HELD BY TCG MEMBERS (OR OTHER THIRD PARTIES) */
/* THAT MAY BE NECESSARY TO IMPLEMENT THIS SPECIFICATION OR OTHERWISE. */
/* Contact TCG Administration (admin@trustedcomputinggroup.org) for */
/* information on specification licensing rights available through TCG */
/* membership agreements. */
/* */
/* - THIS SPECIFICATION IS PROVIDED "AS IS" WITH NO EXPRESS OR IMPLIED */
/* WARRANTIES WHATSOEVER, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR */
/* FITNESS FOR A PARTICULAR PURPOSE, ACCURACY, COMPLETENESS, OR */
/* NONINFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS, OR ANY WARRANTY */
/* OTHERWISE ARISING OUT OF ANY PROPOSAL, SPECIFICATION OR SAMPLE. */
/* */
/* - Without limitation, TCG and its members and licensors disclaim all */
/* liability, including liability for infringement of any proprietary */
/* rights, relating to use of information in this specification and to the */
/* implementation of this specification, and TCG disclaims all liability for */
/* cost of procurement of substitute goods or services, lost profits, loss */
/* of use, loss of data or any incidental, consequential, direct, indirect, */
/* or special damages, whether under contract, tort, warranty or otherwise, */
/* arising in any way out of use or reliance upon this specification or any */
/* information herein. */
/* */
/* (c) Copyright IBM Corp. and others, 2016 - 2019 */
/* */
/********************************************************************************/
/* 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 */
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