Your question is Boot Up Sequence and Cache. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Explain the boot-up sequence and what happens with cache during startup.
Address the answer for a representative Texas Instruments Sitara AM62x-class system, while stating any hardware assumptions. Cover reset, ROM boot, first-stage firmware, U-Boot or TF-A, operating-system handoff, MMU and cache initialization, cache invalidation, memory attributes, and coherency. Explain how you would verify the sequence on hardware using boot logs, JTAG, and performance or fault symptoms.