1 /* Microsoft Reference Implementation for TPM 2.0
2 *
3 * The copyright in this software is being made available under the BSD License,
4 * included below. This software may be subject to other third party and
5 * contributor rights, including patent rights, and no such rights are granted
6 * under this license.
7 *
8 * Copyright (c) Microsoft Corporation
9 *
10 * All rights reserved.
11 *
12 * BSD License
13 *
14 * Redistribution and use in source and binary forms, with or without modification,
15 * are permitted provided that the following conditions are met:
16 *
17 * Redistributions of source code must retain the above copyright notice, this list
18 * of conditions and the following disclaimer.
19 *
20 * Redistributions in binary form must reproduce the above copyright notice, this
21 * list of conditions and the following disclaimer in the documentation and/or
22 * other materials provided with the distribution.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS""
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
27 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
28 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
29 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
30 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
31 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 */
35 //** Description
36
37 // This module simulates the physical presence interface pins on the TPM.
38
39 //** Includes
40 #include "PlatformData.h"
41 #include "Platform_fp.h"
42
43 //** Functions
44
45 //***_plat__PhysicalPresenceAsserted()
46 // Check if physical presence is signaled
47 // return type: int
48 // TRUE(1) if physical presence is signaled
49 // FALSE(0) if physical presence is not signaled
50 LIB_EXPORT int
_plat__PhysicalPresenceAsserted(void)51 _plat__PhysicalPresenceAsserted(
52 void
53 )
54 {
55 // Do not know how to check physical presence without real hardware.
56 // so always return TRUE;
57 return s_physicalPresence;
58 }
59
60 //***_plat__Signal_PhysicalPresenceOn()
61 // Signal physical presence on
62 LIB_EXPORT void
_plat__Signal_PhysicalPresenceOn(void)63 _plat__Signal_PhysicalPresenceOn(
64 void
65 )
66 {
67 s_physicalPresence = TRUE;
68 return;
69 }
70
71 //***_plat__Signal_PhysicalPresenceOff()
72 // Signal physical presence off
73 LIB_EXPORT void
_plat__Signal_PhysicalPresenceOff(void)74 _plat__Signal_PhysicalPresenceOff(
75 void
76 )
77 {
78 s_physicalPresence = FALSE;
79 return;
80 }