MSI PRO B850-P WIFI Dasharo v0.9.0 Released

Published at July 30, 2026 ·  12 min read

Dasharo v0.9.0 for the MSI PRO B850-P WIFI is now available, marking the first release of open-source firmware for a modern AMD Ryzen desktop platform based on coreboot and AMD openSIL. This post covers the features delivered in the release, the known issues, an openness score comparison against the vendor firmware, and answers to the most frequently asked questions from the community....

Categories: firmware

MSI PRO B850-P coreboot port: fTPM, fast boot, and cross-OS validation

Published at July 2, 2026 ·  26 min read

Continuing the MSI PRO B850-P coreboot port series, this post covers the resolution of the amdgpu hard fault that required the nomodeset workaround, AMD firmware TPM support with ROM Armor 3 integration, Promontory21 configuration improvements, EZ Debug LED support, fast boot via APOB memory context restore, and the cross-OS validation campaign that confirmed Linux and Windows 11 fully operational....

Categories: firmware

MSI PRO B850-P coreboot port: GFX init, Promontory21, and ACPI improvements

Published at June 3, 2026 ·  21 min read

Continuing the MSI PRO B850-P coreboot port series, this post covers the completion of GFX initialization in Phoenix openSIL, full Promontory21 I/O chipset support, AMD P-state CPPC enablement, AMD GOP driver integration in EDK2, and a range of ACPI, eSPI, and PCIe improvements that bring Linux to a fully graphical boot....

Categories: firmware

Gigabyte MZ33-AR1 Dasharo v0.9.0 Released

Published at May 15, 2026 ·  8 min read

Dasharo v0.9.0 for the Gigabyte MZ33-AR1 server board is now available, bringing initial open-source firmware support based on coreboot 25.12 and AMD openSIL for the Turin processor family. This post covers the features included in the release, the known issues, testing environment improvements for AMD platforms, and a commentary on the platform openness score....

Categories: firmware

MSI PRO B850-P coreboot port: USB initialization and AM5 IP block porting

Published at April 27, 2026 ·  17 min read

Continuing the MSI PRO B850-P coreboot port series, this post covers the porting of CCX and FCH IP blocks to AMD Phoenix AM5 in openSIL, including nearly 1000 lines of missing USB initialization code. We describe the RcMgr MMIO fix, the DF and APOB analysis, early GFX attempts, and the integration of automated test infrastructure....

Categories: firmware

MSI PRO B850-P coreboot port: Phoenix openSIL AM5 IP block porting

Published at April 3, 2026 ·  14 min read

Continuing the MSI PRO B850-P coreboot port series, this post covers the porting of Phoenix AM5 specific code to openSIL. We describe the progress on NBIO, SMU, MPIO and GFX IP blocks, the chipset authentication breakthrough, SMM initialization challenges, and the current state of the platform including a successful OS boot....

Categories: firmware

MSI PRO B850-P coreboot port: PCIe and USB descriptors and Phoenix OpenSIL

Published at March 6, 2026 ·  17 min read

Continuing the journey of porting MSI PRO B850-P to coreboot. This post covers the port configuration phase: USB and PCIe MPIO descriptors derived from hardware topology discovery. It also describes the integration of Phoenix OpenSIL as a Proof of Concept and the challenges encountered compared to the Genoa and Turin platforms....

Categories: firmware

New adventure: Porting MSI PRO B850-P to coreboot

Published at February 9, 2026 ·  28 min read

The blog post describes the effort made to port a modern AMD desktop board to coreboot. The target is MSI PRO B850-P, supporting AMD AM5 socket processor family and Phoenix OpenSIL....

Categories: firmware

Gigabyte MZ33-AR1 Porting Update: BMC IPMI commands and Upstream

Published at December 5, 2025 ·  11 min read

The Gigabyte MZ33-AR1 porting effort is slowly coming to an end. In the previous blog post we already showed a booting Linux and Windows. Now we show the finishing touches before Dasharo release: BMC IPMI commands, HCL tooling updates for the incoming Phoenix platforms and the Turin upstream status....

Categories: firmware

Gigabyte MZ33-AR1 Porting Update: ACPI and bugfixes

Published at November 5, 2025 ·  29 min read

In this blog post we will explain the effort of porting platform-specific ACPI code and show the extent of bugfixes required to run operating systems without issues on AMD Turin server platform, the Gigabyte MZ33-AR1....

Categories: firmware