Vadim Bendebury | 5679752 | 2015-05-20 10:32:25 -0700 | [diff] [blame] | 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 "PCR_Reset_fp.h" |
| 10 | // |
| 11 | // |
| 12 | // Error Returns Meaning |
| 13 | // |
| 14 | // TPM_RC_LOCALITY current command locality is not allowed to reset the PCR referenced |
| 15 | // by pcrHandle |
| 16 | // |
| 17 | TPM_RC |
| 18 | TPM2_PCR_Reset( |
| 19 | PCR_Reset_In *in // IN: input parameter list |
| 20 | ) |
| 21 | { |
| 22 | TPM_RC result; |
| 23 | |
| 24 | // Input Validation |
| 25 | |
| 26 | // Check if the reset operation is allowed by the current command locality |
| 27 | if(!PCRIsResetAllowed(in->pcrHandle)) |
| 28 | return TPM_RC_LOCALITY; |
| 29 | |
| 30 | // If PCR is state saved and we need to update orderlyState, check NV |
| 31 | // availability |
| 32 | if(PCRIsStateSaved(in->pcrHandle) && gp.orderlyState != SHUTDOWN_NONE) |
| 33 | { |
| 34 | result = NvIsAvailable(); |
| 35 | if(result != TPM_RC_SUCCESS) |
| 36 | return result; |
| 37 | g_clearOrderly = TRUE; |
| 38 | } |
| 39 | |
| 40 | // Internal Data Update |
| 41 | |
| 42 | // Reset selected PCR in all banks to 0 |
| 43 | PCRSetValue(in->pcrHandle, 0); |
| 44 | |
| 45 | // Indicate that the PCR changed so that pcrCounter will be incremented if |
| 46 | // necessary. |
| 47 | PCRChanged(in->pcrHandle); |
| 48 | |
| 49 | return TPM_RC_SUCCESS; |
| 50 | } |