Add a front-io-server to service the front-io board #1805
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Keeping this as a draft for the moment as its a large change and I haven't had a chance to do the validation I'd normally like to. |
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Aaron-Hartwig
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Jun 13, 2024
The primary purpose of this PR is to sketch out an initial stab at an image for Medusa, our QSFP front IO test fixture (details on that in RFD 405). The Medusa-specific logic lives in `medusa-seq-server`. The current goal is just to support hardware bringup, and thus that sequencer just attempts to power on the front IO board and then program its FPGAs. It also checks the status of the various power rails on Medusa and exposes an interface to control those rails (on Sidecar this functionality is handled by the FPGA). An adjacent piece of work here is that Medusa does not have any fans to control and that broke the previous mold of "everything with `thermal` has fans". `thermal` logs `sensor` data _and_ wants to control fan speeds off that data. So the Medusa thermal BSP looks a bit odd compared to the others. Additionally, the `transceivers` task had a `thermal-control` feature flag added to gate the interactions with `thermal` (Sidecar will have this feature set, Medusa will not). Lastly, there's some ugliness that I did for the sake of expediency given my personal situation. Until I can actually land #1805, Medusa simply copies some code from Sidecar. Once this PR lands, I will extend #1805 to cleanup Medusa as well. Closes #1571 --------- Co-authored-by: Cliff L. Biffle <cliff@oxide.computer>
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