Other Parts Discussed in Thread: AM2432
Tool/software:
Hello Expert,
We have conducted further research on the MMR-F3: MMR write protection mechanisms diagnostic procedure and have come across some doubts.
According to the response from your previous post, this diagnostic procedure does not require software-based operations. However, in the safety manual, it explains that this diagnostic procedure is related to the Proxy1 address, whereas TI's example code does not use the Proxy1 address mentioned in the explanation. We are wondering if there is a need for implementing the diagnostic measure using the Proxy1 address in software and whether there is any reference code available.
Please refer to the following manual contentAM64x,< AM243x Functional Safety Manual>:
6.3.107 MMR write protection mechanisms
This MMR module has Proxy Addressing enabled. Each of the following register descriptions lists the Proxy0 address offset which is intended as the normal read/write access address. A second Proxy1 address also exists to provide exclusive register write control to safety-aware processing elements. When the associated claim register bit is set, a register becomes read-only at its Proxy0 address and may only be written through its Proxy1 address. Claim registers themselves are always readable through their Proxy0 address but may only be written through their Proxy1 address.
Thank you
Best regards
Jimmy