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Diffstat (limited to 'src/tpm2/PPPlat.c')
| -rw-r--r-- | src/tpm2/PPPlat.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/src/tpm2/PPPlat.c b/src/tpm2/PPPlat.c new file mode 100644 index 0000000..edb0007 --- /dev/null +++ b/src/tpm2/PPPlat.c @@ -0,0 +1,112 @@ +/********************************************************************************/ +/* */ +/* 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 */ |