TrustZone is broken as implemented in most devices, and nobody was surprised. https://blog.acolyer.org/2017/09/21/clkscrew-exposing-the-perils-of-security-oblivious-energy-management/ …
Show this thread
-
Or have a separate CPU to do power Mgmt. And have a bunch of angry power folks yelling "but muh latencies"
Power mgmt isn't the only problem. For example, you can do fault injection shenanigans with the DRAM controller too. Lots of fun to be had.
