diff options
Diffstat (limited to 'src/lib/tpm2_tlcl.c')
| -rw-r--r-- | src/lib/tpm2_tlcl.c | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/src/lib/tpm2_tlcl.c b/src/lib/tpm2_tlcl.c index 312fe36414..3003400033 100644 --- a/src/lib/tpm2_tlcl.c +++ b/src/lib/tpm2_tlcl.c @@ -201,19 +201,22 @@ uint32_t tlcl_set_enable(void) return TPM_SUCCESS; } -uint32_t tlcl_set_global_lock(void) +uint32_t tlcl_lock_nv_write(uint32_t index) { - /* - * This is where the locking of the RO NVram index is supposed to - * happen. The most likely way to achieve it is to extend PCR used for - * policy when defining this space. - */ - printk(BIOS_INFO, "%s:%s:%d\n", __FILE__, __func__, __LINE__); - return TPM_SUCCESS; -} -uint32_t tlcl_set_nv_locked(void) -{ - printk(BIOS_INFO, "%s:%s:%d\n", __FILE__, __func__, __LINE__); + struct tpm2_response *response; + /* TPM Wll reject attempts to write at non-defined index. */ + struct tpm2_nv_write_lock_cmd nv_wl = { + .nvIndex = HR_NV_INDEX + index, + }; + + response = tpm_process_command(TPM2_NV_WriteLock, &nv_wl); + + printk(BIOS_INFO, "%s: response is %x\n", + __func__, response ? response->hdr.tpm_code : -1); + + if (!response || response->hdr.tpm_code) + return TPM_E_IOERROR; + return TPM_SUCCESS; } |