of_sec_rollback_counter
Anti-rollback counter
Maturity plannedTargets FPGA + ASICDifficulty EasyPriority 2
Monotonic counters backed by OTP or protected non-volatile storage for firmware version and replay protection.
Planned. This block is specified in the catalog with its interfaces and targets. No implementation exists yet; the skeleton command below generates a lint-clean shell with its ports and registers.
Interfaces
| Port | Direction | Kind | Width | Notes |
|---|---|---|---|---|
| ctrl | in/out | APB control bus | 32 | Control and status registers, including ID, VERSION and STATUS |
| irq | out | interrupt | 1 | Interrupt request |
Standards
No external standard applies.
More in lifecycle
| ID | Block | Maturity |
|---|---|---|
| of_sec_otp_ctrl | OTP controller | planned |
| of_sec_lc_ctrl | Lifecycle controller | planned |
| of_sec_bbram_rtc | Battery-backed key store with tamper inputs | planned |