AMD "Mayan Morgana" Reference Motherboard Added To Coreboot

Written by Michael Larabel in AMD on 28 November 2022 at 05:35 AM EST. 2 Comments
Back in October the open-source Coreboot firmware project began seeing patches for new AMD SoCs codenamed "Morgana" and "Glinda". That work has continued and over the weekend the "Mayan Morgana" was merged as the reference motherboard for the Morgana SoC.

In the weeks since those new AMD SoC patches appeared for Coreboot, more patches have come and now with the "Mayan Morgana" we begin to see the CRB reference board bring-up begin. Morgana and Glinda aren't AMD codenames we have heard previously, but not too surprising given that AMD Sabrina was a early codename for Mendocino in the Coreboot space.

The new commit adding the "Mayan_Morgana" was merged on Sunday. From the Kconfig setup it's clear that Morgana is focused on Chrome OS / Chromebook use, which isn't a surprise at all given that AMD in the consumer space their focus with Coreboot has been almost entirely focused in this area.

Prior Glinda/Morgana patches have pointed to the SoCs being under Family 17h, thus likely another low-end iteration on Zen 2 just as there is with Mendocino. It's not clear yet if Glinda and Morgana are an extension of Mendocino or will be its 2023 successor. It's a bit sad seeing new Zen 2 designs still coming given the enormous performance uplift and efficiency gains found with Zen 3 and Zen 4, but again this is for the very low-end space.

In any event it's nice seeing the open-source Coreboot work continue and hopefully they will open their Coreboot scope beyond just Chromebooks in the future -- like a decade ago when AMD wanted Coreboot support for all future CPUs. So far I haven't seen any Zen 4 work for Coreboot, so presumably will be a while still before seeing any high-end Zen 4 Chromebooks.

Beyond the system firmware they continue to engage as well around Sound Open Firmware and I am still filled with joy that their EPYC Genoa reference board runs OpenBMC. What else do you hope to see from AMD on the open-source firmware side in 2023? Share your hopes in the comments.
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