Prospects of TrenchBoot on ARM
Published at August 12, 2026 · Sergii Dmytruk · 10 min read
A look at DRTM on ARM: where it stands compared to Intel TXT/AMD SKINIT and what will it take to run TrenchBoot on AArch64. How can TrenchBoot support both x86 and ARM architectures at the same time....
MSI PRO B850-P WIFI Dasharo v0.9.0 Released
Published at July 30, 2026 · Michał Żygowski · 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 · Michał Żygowski · 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 · Michał Żygowski · 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 · Michał Żygowski · 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 · Michał Żygowski · 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 · Michał Żygowski · 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 · Michał Żygowski · 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 · Michał Żygowski · 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 · Michał Żygowski · 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 · Michał Żygowski · 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
Gigabyte MZ33-AR1 Porting Update: PCIe Init, BMC KVM Validation, and HCL Improvements
Published at October 10, 2025 · Michał Żygowski · Mateusz Kusiak · 22 min read
Another post about the Gigabyte MZ33-AR1 porting effort progress. This time, we add definitions for PCI Express initialization, and validate BMC KVM VGA and keyboard. Also, improvements to HCL reporting and data dumping on AMD systems have been made....
Categories: firmware
AMD PSP blob analysis on Gigabyte MZ33-AR1 Turin system
Published at September 12, 2025 · Michał Żygowski · 14 min read
The blog post describes the analysis of PSP blobs on Gigabyte. MZ33-AR1. The analysis covers various aspects of stitching AMD firmware BIOS images and how a support for stitching Turin blobs was developed in coreboot....
Categories: firmware
Mapping and initializing USB and SATA ports on Gigabyte MZ33-AR1
Published at September 12, 2025 · Michał Żygowski · 26 min read
As the Gigabyte MZ33-AR1 porting effort progresses, coreboot has to add definitions for I/O bus initialization, such as SATA, USB and PCI Express. If you are curious how it is done on an AMD Turin-based system, read till the end....
Categories: firmware
Published at August 27, 2025 · Kamil Aronowski · 12 min read
The `init_on_free` Linux option ensures rigorous security by instantly zeroing out memory upon deallocation. In this follow-up, we build on our prior ram-wipe experiments to rigorously evaluate if `init_on_free` can serve as a robust safeguard, perhaps supplanting existing, less comprehensive memory wiping solutions....
Porting Gigabyte MZ33-AR1 server board with AMD Turin CPU to coreboot
Published at August 7, 2025 · Michał Żygowski · 20 min read
The blog post describes effort made to port a modern AMD server board to coreboot. The target is Gigabyte MZ33-AR1 supporting newest AMD EPYC server processor family Turin and OpenSIL....
Categories: firmware
Diving deep into Linux DRM bridge chaining
Published at February 12, 2024 · Daniil Klimuk · 14 min read
The post describes the story of implementing bridge-chaining using the DRM/KMS Linux Kernel system on an embedded device with i.mx8mmini SoC...
Categories: firmware miscellaneous
Upgrading your gears with liquid cooling
Published at December 18, 2023 · Michał Żygowski · 6 min read
The post describes the story of upgrading a MSI PRO Z690-A DDR4 Full PC build with Dasharo firmware from 3mdeb to a 14th Gen Intel CPU and a liquid cooling....
Categories: firmware miscellaneous
Our contribution to coreboot 4.20 release
Published at May 18, 2023 · Piotr Król · 4 min read
🎉 Celebrating coreboot 4.20 release! 🚀 Kudos to our contributors who have pushed the envelope in firmware security & optimization. Key updates: improved SoC support, TPM security, VT-d DMA protection & more. Check out the blog for all the details....
Categories: firmware
3mdeb Insights: A Look into 3mdeb's Open-Source Contributions
Published at April 27, 2023 · Norbert Kamiński · Piotr Król · 13 min read
We're thrilled to share our team's summary of open-source contributions from 2021 to the first half of 2023 with you. We've actively worked on enhancing various projects, including coreboot and fwupd. Our involvement has not only boosted the functionality and security of these projects but also equipped us with valuable expertise for our clients. Stay tuned for an insightful blog post diving into our open-source contributions!...
Categories: firmware manufacturing
Published at January 30, 2023 · Norbert Kamiński · 5 min read
This blog post will provide an in-depth look at upcoming plans and events for the near future.n the next quarter, we have several exciting events planned for the 3mdeb community. Our events aim to provide a platform for members to connect, share knowledge, and stay informed about the latest developments in the open-source ecosystem....
Categories: firmware miscellaneous
Open Source Firmware on AMD Milan server processors
Published at September 9, 2021 · Michał Żygowski · 6 min read
There were times where AMD was actively supporting open source firmware ecosystem by providing silicon initialization code. With a few years break AMD is now trying to support open source firmware again with the mobile platform like Chromebooks. However, the recent achievements have made everybody think that open source firmware is also possible on servers....
Categories: firmware
OSF vPub (vBeer) - what a fun event!
Published at July 1, 2021 · Mike Banon · 2 min read
Our 2nd OSF vPub gathering was really fun and interesting - together with Richard Stallman as our honored guest!...
Categories: firmware miscellaneous
Open Compute Open System Firmware (OCP OSF) and its' importance
Published at June 10, 2021 · Piotr Król · 6 min read
Let's figure out what is OCP Open System Firmware, see how it relates to the Open Source Firmware (OSF) - and why it is important for your company to have one running on your product....
Categories: firmware miscellaneous
Dell OptiPlex and coreboot - a story about porting cursed hardware (part 2)
Published at June 1, 2021 · Michał Żygowski · 10 min read
This post is a second part of the series which tells a story about porting Dell OptiPlex 9010 workstation to open-source firmware - coreboot. What was simple is long past us in the first part of the series. This time we are taking a deeper dive into the technical aspects of Environmental Controller reverse engineering and locating the problem with machine not booting after AC loss....
Categories: firmware
Thoughts on OSFC 2020 – day 2 and 3
Published at April 14, 2021 · Kamila Banecka · 8 min read
Lets share some thoughts that evolved during the OSFC 2020 talks and send kudos to many people who made this conference happen....
Categories: firmware
OSF vPub (vBeer) - what a fun event!
Published at February 23, 2021 · Mike Banon · 2 min read
We've just had our first OSF vPub gathering, with lots of fun & really interesting talk about the open-source firmware/hardware with 50 masters from all over the world!...
Categories: firmware miscellaneous
Thoughts around OSFC 2020 – day 1
Published at December 21, 2020 · Kamila Banecka · Piotr Król · 6 min read
Lets share some thoughts that evolved during the OSFC 2020 talks and send kudos to many people who made this conference happen....
TrenchBoot: Open Source DRTM. Multiboot2 support.
Published at September 7, 2020 · Krystian Hebel · 11 min read
This month we will show that not only Linux kernel can be started by TrenchBoot. We also did some drastic changes to the bootloader data format, so if you try to redo some older posts in the future and they do not seem to work, this is probably the place to look for hints....
Published at September 3, 2020 · Kamila Banecka · 4 min read
The second post on 3mdeb contribution summary! The second quarter of 2020 has brought new merged patches. Check the samples of code that we successfully contributed and feel free to use them in your own projects....
Categories: miscellaneous
TrenchBoot: Open Source DRTM. TPM event log all the way.
Published at August 13, 2020 · Krystian Hebel · 12 min read
We extended the TPM event log support to the Linux kernel. It is now possible to print all of the PCR extend operations performed and compare the hashes with files to see if anything is wrong....
DEV and IOMMU: a story of two DMA protection mechanisms
Published at July 3, 2020 · Krystian Hebel · 12 min read
Both DEV and IOMMU can help with protection against malicious DMA. This post roughly describes the difference between those two, as well as the impact they have on each other in the context of TrenchBoot...
TrenchBoot: Open Source DRTM. GRUB's new features and TPM event log.
Published at July 3, 2020 · Piotr Kleinschmidt · 16 min read
This blog post will show you what features we have added to GRUB and why they are useful from user's point of view. Also, there will be shown how to utilize TPM event logs and hence debug DRTM....
Dell OptiPlex and coreboot - a story about porting cursed hardware (part 1)
Published at June 24, 2020 · Michał Żygowski · 7 min read
This post begins a new series telling a story of a stubborn firmware engineer who overcame never-ending amount of obstacles to create a Dell OptiPlex 9010 workstation as open as possible. In this series, you will not only read about the adventures which accompanied the work on the hardware but also you will have a chance to learn the way of BIOS developer....
Categories: firmware
Installing TrenchBoot in UEFI environments
Published at May 6, 2020 · Michał Żygowski · 17 min read
This blog post will show you how to install NixOS on UEFI platforms and how to install TrenchBoot on them....
TrenchBoot: Open Source DRTM. CI/CD system.
Published at May 5, 2020 · Piotr Kleinschmidt · 6 min read
How to improve development and validation process in our project? Automation? Of course! Let us introduce our CI/CD system. Find out how it actually works and what advantages it has....
TrenchBoot: Open Source DRTM. DRTM update and meta-trenchboot implementation
Published at April 30, 2020 · Piotr Kleinschmidt · 11 min read
Another release brings new updates in our Open Source DRTM project. Except for code changes, we have prepared our custom Linux image with DRTM. Also we set up CI/CD system for automation build and test. Read this article if you want to find out more details....
3mdeb contribution 2020'Q1 - coreboot ports all over the place.
Published at April 16, 2020 · Artur Raglis · 6 min read
The starter of the new series - 3mdeb contribution summary! First quarter of 2020 brings many new merged patches. Check the samples of code that we successfully contributed and feel free to use them in your own projects....
Categories: miscellaneous
TrenchBoot: Open Source DRTM. Landing Zone validation.
Published at April 3, 2020 · Piotr Kleinschmidt · 25 min read
When you already know what is TrenchBoot, what is DRTM and how we enable it on AMD processors, we can move on to practice. I will show you how to configure all components and verify first of project's requirements....
TrenchBoot - Open Source DRTM for AMD processors. Project's basics.
Published at March 31, 2020 · Piotr Kleinschmidt · 11 min read
This is the first blog post of TrenchBoot series. It will introduce you to the project, its structure and environment. Additionally the reader will find out more about each component, how to setup the environment and configure the build....
Open Source DRTM with TrenchBoot for AMD processors. Introduction.
Published at March 28, 2020 · Piotr Kleinschmidt · 4 min read
This article starts an entire series of articles related to title project. By reading this blog post, you will find out why we have started such project and who is supporting us. Also, we bring you closer to main concept and goals....
Workflow improvement with Open Source tools - part 1
Published at May 16, 2013 · Piotr Król · 5 min read
Introduction I want to start a series of articles to describe how I improve my workflow with geeky Open Source applications. I will concentrate on terminal applications that I try to use in my GTD process. Terminal Solarized gnome-terminal If you already don’t know what solarized color scheme is then please take a look at this page. To install solarized colorscheme in gnome-terminal simply follow instruction from this git repository....
Categories: miscellaneous
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