Hi experts,
I've been studying the ARM Cortex-R5 Technical Reference Manual and I have some questions about memory region configurations, specifically regarding strongly ordered memory regions.
To clarify, I'd like to know:
1. Do the alignment requirements for strongly ordered memory regions, such as RAM, also apply to Tightly Coupled Memory (TCM)?
2. Are there any specific alignment requirements for TCM when it is configured as strongly ordered?
3. Could you please explain the alignment requirements for strongly ordered memory regions in general, as I want to ensure I understand the concept correctly?
Additionally, I've observed a specific behavior that I'd like to understand:
When I configure OCram (On-Chip RAM) as Strongly Ordered (SO) and perform an unaligned access, a data abort occurs.However, when I configure TCM as SO and perform an unaligned access, no data abort occurs.This seems to suggest that the alignment requirements for strongly ordered memory regions may not be enforced in the same way for TCM as they are for OCram.
Could you please help me understand the reasons behind this difference in behavior between OCram and TCM, and provide clarification on the alignment requirements for strongly ordered memory regions in general?