3mdeb Makes Progress Bringing AMD openSIL + Coreboot To Ryzen AM5 Motherboard
([AMD] 5 Hours Ago
MSI PRO B850-P)
- Reference: 0001624826
- News link: https://www.phoronix.com/news/Coreboot-Progress-MSI-B850
- Source link:
In addition to 3mdeb firmware engineers [1]porting AMD openSIL and Coreboot to a Gigabyte EPYC Turin server motherboard , the staff at this firmware consulting company are also porting AMD openSIL and Coreboot to a modern Ryzen AM5 desktop motherboard. They continue making good strides with that quest for the first readily-available Ryzen desktop motherboard with open-source system firmware.
Back in February was the announcement by 3mdeb that they are [2]bringing Coreboot and openSIL to a consumer AM5 motherboard and in turn their commercial Coreboot-based Dasharo firmware offering.
The MSI PRO B850-P is a current-generation, readily-available ATX motherboard for current Ryzen AM5 processors. It was widely available for ~$180 USD but given the ongoing pricing squeeze in the industry, as of writing it's currently selling for around $235 USD from the likes of [3]Amazon (affiliate link).
In anticipation of this AMD openSIL and Coreboot port, I had already [4]bought an MSI PRO B850-P for testing and readying to free that closed-source BIOS in favor of openSIL+Coreboot when available.
3mdeb on Friday published their latest blog post to outline their ongoing bring-up of Coreboot and the AMD Phoenix openSIL code. Some of this bring-up is benefiting from the simultaneous work they are doing with the Gigabyte MZ33-AR1 server motherboard port. Their latest work includes on bringing up MPIO, SMU, NBIO, and continuing work on graphics bring-up. There is almost successful OS boot with this port.
Those wishing to learn more can do so via the [5]3mdeb blog .
[1] https://www.phoronix.com/review/gigabyte-mz33-ar1
[2] https://www.phoronix.com/news/AMD-openSIL-Coreboot-AM5-Zen-5
[3] https://amzn.to/4sdtHh0
[4] https://www.phoronix.com/review/msi-pro-b850p-wifi
[5] https://blog.3mdeb.com/2026/2026-04-03-msi_pro_b850p_part3/
Back in February was the announcement by 3mdeb that they are [2]bringing Coreboot and openSIL to a consumer AM5 motherboard and in turn their commercial Coreboot-based Dasharo firmware offering.
The MSI PRO B850-P is a current-generation, readily-available ATX motherboard for current Ryzen AM5 processors. It was widely available for ~$180 USD but given the ongoing pricing squeeze in the industry, as of writing it's currently selling for around $235 USD from the likes of [3]Amazon (affiliate link).
In anticipation of this AMD openSIL and Coreboot port, I had already [4]bought an MSI PRO B850-P for testing and readying to free that closed-source BIOS in favor of openSIL+Coreboot when available.
3mdeb on Friday published their latest blog post to outline their ongoing bring-up of Coreboot and the AMD Phoenix openSIL code. Some of this bring-up is benefiting from the simultaneous work they are doing with the Gigabyte MZ33-AR1 server motherboard port. Their latest work includes on bringing up MPIO, SMU, NBIO, and continuing work on graphics bring-up. There is almost successful OS boot with this port.
Those wishing to learn more can do so via the [5]3mdeb blog .
[1] https://www.phoronix.com/review/gigabyte-mz33-ar1
[2] https://www.phoronix.com/news/AMD-openSIL-Coreboot-AM5-Zen-5
[3] https://amzn.to/4sdtHh0
[4] https://www.phoronix.com/review/msi-pro-b850p-wifi
[5] https://blog.3mdeb.com/2026/2026-04-03-msi_pro_b850p_part3/