I am using the RT1020, but I am told this document applies:
Security Reference Manual for the i.MX RT1050 Processor, Rev. 1, 04/2018
Table 3-14. Information for encrypted region, pages 79-80
0x0C - 0x0F, Lock_option, Region Lock options:
0 - All regions are unlocked
1 - All FAC regions that belong to BEE Region1 are locked
2 - All RAC regions that belong to BEE Region0 are locked
3 - Both BEE regions are locked, All FAC regions defined in PRDB are locked.
- What is a RAC region? Is this a typo? Should it be FAC?
- What does it mean by ‘locking’ a region? What does the lock do?
- Why is a PRDB region able to lock both BEE Region 1 and BEE Region 0? I would have expected PRDB0 to lock BEE Region 0 and PRDB1 to lock BEE Region 1. What am I missing?
Many thanks and regards,