Patent ID: 11914718
Assignee: STMICROELECTRONICS (ALPS) SAS
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 12:
13. A method for booting a processing device, the method comprising:
(a) executing a first boot phase comprising:
generating, by a monotonic counter a first count value,
transmitting, by the monotonic counter, the first count value to an access control circuit of a memory, and
reading, based on the first count value, first data stored in the memory; and

(b) executing a second boot phase comprising:
irreversibly incrementing the monotonic counter to a second count value greater than the first count value,
transmitting, by the monotonic counter, the second count value to the access control circuit of the memory,
preventing, by the access control circuit based on the second count value, reading of the first data, and
reading, based on the second count value, second data stored in the memory and associated with the second boot phase.