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 #include "Tpm.h"
36 #include "PCR_Allocate_fp.h"
37
38 #if CC_PCR_Allocate // Conditional expansion of this file
39
40 /*(See part 3 specification)
41 // Allocate PCR banks
42 */
43 // Return Type: TPM_RC
44 // TPM_RC_PCR the allocation did not have required PCR
45 // TPM_RC_NV_UNAVAILABLE NV is not accessible
46 // TPM_RC_NV_RATE NV is in a rate-limiting mode
47 TPM_RC
TPM2_PCR_Allocate(PCR_Allocate_In * in,PCR_Allocate_Out * out)48 TPM2_PCR_Allocate(
49 PCR_Allocate_In *in, // IN: input parameter list
50 PCR_Allocate_Out *out // OUT: output parameter list
51 )
52 {
53 TPM_RC result;
54
55 // The command needs NV update. Check if NV is available.
56 // A TPM_RC_NV_UNAVAILABLE or TPM_RC_NV_RATE error may be returned at
57 // this point.
58 // Note: These codes are not listed in the return values above because it is
59 // an implementation choice to check in this routine rather than in a common
60 // function that is called before these actions are called. These return values
61 // are described in the Response Code section of Part 3.
62 RETURN_IF_NV_IS_NOT_AVAILABLE;
63
64 // Command Output
65
66 // Call PCR Allocation function.
67 result = PCRAllocate(&in->pcrAllocation, &out->maxPCR,
68 &out->sizeNeeded, &out->sizeAvailable);
69 if(result == TPM_RC_PCR)
70 return result;
71
72 //
73 out->allocationSuccess = (result == TPM_RC_SUCCESS);
74
75 // if re-configuration succeeds, set the flag to indicate PCR configuration is
76 // going to be changed in next boot
77 if(out->allocationSuccess == YES)
78 g_pcrReConfig = TRUE;
79
80 return TPM_RC_SUCCESS;
81 }
82
83 #endif // CC_PCR_Allocate