1// This file was extracted from the TCG Published
2// Trusted Platform Module Library
3// Part 3: Commands
4// Family "2.0"
5// Level 00 Revision 01.16
6// October 30, 2014
7
8#include "InternalRoutines.h"
9#include "SetPrimaryPolicy_fp.h"
10//
11//
12//     Error Returns               Meaning
13//
14//     TPM_RC_SIZE                 size of input authPolicy is not consistent with input hash algorithm
15//
16TPM_RC
17TPM2_SetPrimaryPolicy(
18   SetPrimaryPolicy_In    *in                 // IN: input parameter list
19   )
20{
21   TPM_RC                  result;
22
23// Input Validation
24
25   // Check the authPolicy consistent with hash algorithm. If the policy size is
26   // zero, then the algorithm is required to be TPM_ALG_NULL
27   if(in->authPolicy.t.size != CryptGetHashDigestSize(in->hashAlg))
28       return TPM_RC_SIZE + RC_SetPrimaryPolicy_authPolicy;
29
30   // The command need NV update for OWNER and ENDORSEMENT hierarchy, and
31   // might need orderlyState update for PLATFROM hierarchy.
32   // Check if NV is available. A TPM_RC_NV_UNAVAILABLE or TPM_RC_NV_RATE
33   // error may be returned at this point
34   result = NvIsAvailable();
35   if(result != TPM_RC_SUCCESS)
36       return result;
37
38// Internal Data Update
39
40   // Set hierarchy policy
41   switch(in->authHandle)
42   {
43       case TPM_RH_OWNER:
44           gp.ownerAlg = in->hashAlg;
45           gp.ownerPolicy = in->authPolicy;
46           NvWriteReserved(NV_OWNER_ALG, &gp.ownerAlg);
47           NvWriteReserved(NV_OWNER_POLICY, &gp.ownerPolicy);
48           break;
49       case TPM_RH_ENDORSEMENT:
50           gp.endorsementAlg = in->hashAlg;
51           gp.endorsementPolicy = in->authPolicy;
52           NvWriteReserved(NV_ENDORSEMENT_ALG, &gp.endorsementAlg);
53           NvWriteReserved(NV_ENDORSEMENT_POLICY, &gp.endorsementPolicy);
54           break;
55       case TPM_RH_PLATFORM:
56           gc.platformAlg = in->hashAlg;
57           gc.platformPolicy = in->authPolicy;
58           // need to update orderly state
59           g_clearOrderly = TRUE;
60           break;
61       case TPM_RH_LOCKOUT:
62           gp.lockoutAlg = in->hashAlg;
63           gp.lockoutPolicy = in->authPolicy;
64           NvWriteReserved(NV_LOCKOUT_ALG, &gp.lockoutAlg);
65           NvWriteReserved(NV_LOCKOUT_POLICY, &gp.lockoutPolicy);
66           break;
67
68       default:
69            pAssert(FALSE);
70            break;
71   }
72
73   return TPM_RC_SUCCESS;
74}
75