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.