2.9.2.4.3 Monitor Disabling by the Bootstrap
It is highly recommended to disable the Secure Monitor feature for systems in production. To do so, the MON_DIS word must be filled and the Boot Configuration Packet must be locked at the production stage.
If that has not been done, writing the “MON_DIS” word can be performed by the bootstrap or by the customer application, but only if the Boot Configuration Packet has not been locked.
To write the “MON_DIS” word and lock the packet, an update of the Boot Configuration
Packet in the OTP memory is required. In the section OTP Memory Controller
(OTPC), refer to chapters:
- Updating an Existing Packet from the User Interface
- Locking a Packet