It's Time for Operating Systems to Rediscover Hardware

Re:It's Time for Operating Systems to Rediscover Hardware by ironman1478 on Wednesday September 01, 2021 @02:38AM (#28377003)

So, it's funny. It's not uncommon to run RTOSs and Linux on the same CPU, where the rtos coordinates tasks between the components that have real time requirements and the Linux side does stuff like stream data from a buffer that the rtos writes to. We had this architecture on some systems and the amount of cludging to get this all working was annoying to say the least. We specifically had issues are figuring out how to partition the memory regions for each OS and it wasn't trivial to validate.

I wasn't around when the decisions at my employer when the decisions made around OS options, but this would've been a viable one if it was mature enough at that time. Thanks for the info!

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Re:It's Time for Operating Systems to Rediscover Hardware by elcritch on Wednesday September 01, 2021 @03:14AM (#28377177)

Sounds way too familiar! What’s amazing (to me) is that there’s even a VSCode plugin for DTS files that checks the memory offsets and gives you nice error messages like “flash partition 1 overlap partition 2 at 0x3e000, …”. It’s a bit like magic after doing it manually.

P.S. huh looks like Linux and Zephyr _are_ doing this via RPMsg subsystem as well. Wow, much nicer than the last time I looked into it!

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