Other Parts Discussed in Thread: DRA821
There're several questions regarding to the security functionalities and secure configuration on TDA4/DRA821U.
- We read from document that currently there're 3 master firewalls in TDA4/DRA821U,
which arbitrates memory access transactions from A72SS0, C71SS0, DRU.
Is C71SS0 available on DRA821U? If yes, which hardware component does C71SS0 refer to?
- How could we configure the system to prevent DMA to/from a given range of physical memory?
From the document, we read that DRU manages DMA request.
Hence, could we configure DRU on DRA821U to block DMA from/to given memory range? If not, how could we do that?