// This file was extracted from the TCG Published

// Trusted Platform Module Library

// Part 3: Commands

// Family "2.0"

// Level 00 Revision 01.16

// October 30, 2014

#include "InternalRoutines.h"

#include "PCR_Allocate_fp.h"

//

//

//     Error Returns                    Meaning

//

//     TPM_RC_PCR                       the allocation did not have required PCR

//     TPM_RC_NV_UNAVAILABLE            NV is not accessible

//     TPM_RC_NV_RATE                   NV is in a rate-limiting mode

//

TPM_RC

TPM2_PCR_Allocate(

   PCR_Allocate_In       *in,                 // IN: input parameter list

   PCR_Allocate_Out      *out                 // OUT: output parameter list

   )

{

   TPM_RC      result;

   // The command needs NV update. Check if NV is available.

   // A TPM_RC_NV_UNAVAILABLE or TPM_RC_NV_RATE error may be returned at

   // this point.

   // Note: These codes are not listed in the return values above because it is

   // an implementation choice to check in this routine rather than in a common

   // function that is called before these actions are called. These return values

   // are described in the Response Code section of Part 3.

   result = NvIsAvailable();

   if(result != TPM_RC_SUCCESS)

       return result;

// Command Output

   // Call PCR Allocation function.

   result = PCRAllocate(&in->pcrAllocation, &out->maxPCR,

                                        &out->sizeNeeded, &out->sizeAvailable);

   if(result == TPM_RC_PCR)

       return result;

   //

   out->allocationSuccess = (result == TPM_RC_SUCCESS);

   // if re-configuration succeeds, set the flag to indicate PCR configuration is

   // going to be changed in next boot

   if(out->allocationSuccess == YES)

       g_pcrReConfig = TRUE;

   return TPM_RC_SUCCESS;

}