Hi experts,
The safety manual suggests that the privileged mode access permission mechanism should be tested, by "initiating SW transactions and reviewing the device response".
We are currently using the same method as the SafeTi Library. On System start we try to write to a PMM register in user mode which can only be written in privileged mode.
We then check if an abort is generated and the register is unchanged.
However we were wondering, if testing just one PMM register is sufficent or multible should be tested.
(Q1) From the describtion provided I would assume that the access permission logic is implemnted on the level of the bus master. So that a failure in the access permission logic would lead to a failure of the memory protection of all PMM registers. Which would mean that testing just one register is sufficent. Is this correct?
Thank you and best regards,
Max
