diff options
Diffstat (limited to 'firmware/lib/rollback_index.c')
| -rw-r--r-- | firmware/lib/rollback_index.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/firmware/lib/rollback_index.c b/firmware/lib/rollback_index.c index 306e9032..49b3a84b 100644 --- a/firmware/lib/rollback_index.c +++ b/firmware/lib/rollback_index.c @@ -667,10 +667,16 @@ uint32_t RollbackBackupWrite(uint8_t *raw) uint32_t RollbackKernelLock(int recovery_mode) { - if (recovery_mode) + static int kernel_locked = 0; + uint32_t r; + + if (recovery_mode || kernel_locked) return TPM_SUCCESS; - else - return TlclLockPhysicalPresence(); + + r = TlclLockPhysicalPresence(); + if (TPM_SUCCESS == r) + kernel_locked = 1; + return r; } #endif /* DISABLE_ROLLBACK_TPM */ |