Dasharo Compatible with MSI PRO Z690-A Release v1.1.2
Published at September 8, 2023 · Piotr Kr贸l · 10 min read
Discover the latest Dasharo v1.1.2 release, designed with you in mind. Enjoy the freedom to personalize with the new logo customization feature, and flash open-source firmware safely with Flash BIOS recovery support. Its about making firmware both fun and secure. Dive in to find out more....
Optimizing SPI communication on STM32 MCUs: a comprehensive guide to high-frequency communication
Published at July 28, 2023 · Artur Kowalski · 22 min read
In this blog post, we delve into the fascinating world of Serial Peripheral Interface (SPI) on STM32 microcontrollers (MCUs). Specifically, we explore how SPI is utilized in TPM chips for communication with PC motherboards. We encounter the challenges of achieving high-frequency SPI communication, especially when operating as a slave, and the specific limitations of STM32L476 MCUs. The article further uncovers the limitations of existing approaches in platforms like Zephyr and STM32 HAL. We then embark on a journey to fix SPI issues, improve DMA performance, and optimize the firmware for high-speed SPI communication. Throughout the blog post, we provide in-depth technical insights and share valuable test results. Join us as we push the boundaries of SPI communication and unlock new possibilities in the world of microcontrollers....
Categories: firmware miscellaneous security
Fobnail Token - example use case
Published at May 19, 2023 · Krystian Hebel · 11 min read
This phase focused on using Fobnail in a real-life use case, namely using it to access LUKS2 decryption key if and only if the PCR measurements are valid...
Categories: security
Our contribution to coreboot 4.20 release
Published at May 18, 2023 · Piotr Kr贸l · 4 min read
馃帀 Celebrating coreboot 4.20 release! 馃殌 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 Kami艅ski · Piotr Kr贸l · 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
Dasharo compatible with MSI PRO Z690-A release v1.1.1
Published at March 2, 2023 · Micha艂 呕ygowski · 11 min read
A short overview of changes introduced in v1.1.1 release of Dasharo compatible with MSI PRO Z690-A with a short demo of Qubes OS R4.1.2-rc1....
Categories: firmware
TrenchBoot Anti Evil Maid for Qubes OS
Published at January 31, 2023 · Micha艂 呕ygowski · 14 min read
Qubes OS Anti Evil Maid (AEM) software heavily depends on the availability of the DRTM technologies to prevent the Evil Maid attacks. However, the project has not evolved much since the beginning of 2018 and froze on the support of TPM 1.2 with Intel TXT in legacy boot mode (BIOS). In the post we show how existing solution can be replaced with TrenchBoot and how one can install it on the Qubes OS. Also the post will also briefly explain how TrenchBoot opens the door for future TPM 2.0 and UEFI support for AEM....
Categories: bootloader firmware hypervisor os-dev security
Published at January 30, 2023 · Norbert Kami艅ski · 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
Qubes OS summit 2022 - Summary
Published at October 5, 2022 · Norbert Kami艅ski · 10 min read
Three weeks ago 3mdeb with Qubes OS team had organized next edition of the Qubes OS summit. This year summit was a face-to-face event hosted in Berlin, which took place from the 9th to the 11th of September....
Categories: miscellaneous os-dev
Infrastructure for Xen development and debugging
Published at July 4, 2022 · Piotr Kr贸l · Norbert Kami艅ski · 5 min read
Back in 2018 at OSFC, we've presented AMD IOMMU enabling for PC Engines apuX (GX-412TC) platforms. Our hypervisor of choice was Xen and we used it to verify the PCI pass-through feature. Unfortunately, the booting process was not exactly stable. In this article, you can check how to prepare infrastructure for Xen development and debugging...
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