Daniel Maslowski
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# LinuxBoot Meeting Notes We are having bi-weekly meetings to discuss the development of the [LinuxBoot project](https://linuxboot.org). Our main reference is the [LinuxBoot book](https://book.linuxboot.org) :book:. ## 2025-07-07 ### Participants - Dennis Marttinen (Racklet) - Philip Molloy (LinuxBoot TSC) - Daniel Maslowski (LinuxBoot TSC) ### Topics - Merged into :book:: [boot config](https://github.com/linuxboot/book/pull/145) - What next? - Philip: [intro cleanup](https://github.com/linuxboot/book/pull/176) - Daniel: [expand on use-cases](https://github.com/linuxboot/book/pull/140) ## 2025-06-23 ### Participants - Dennis Marttinen (Racklet) - Thierry Laurion (Heads) - Philip Molloy (LinuxBoot TSC) - Daniel Maslowski (LinuxBoot TSC) ### Topics - Restructuring the [book :book:](https://book.linuxboot.org) - Intro has too many UEFI, u-root specifics - Move specifics into other sections - Keep only "What is LinuxBoot?" and "Why LinuxBoot?" - Diagram like on the main LinuxBoot website - Recreate with Mermaid? - Add oreboot as another possible pre-stage - Have graphics for EDK2, U-Boot etc for recognition - "What LinuxBoot does" -> intro to UEFI - Golang selling points -> under u-root - Make high-level sections short intros, a single paragraph roughly - Glossary using [mdbook-hints](https://lib.rs/crates/mdbook-hints)? - Daniel drafted an application for NLnet / NGI fund - Goal: Integrate LinuxBoot with U-Boot SPL - ~5 platforms for reference - Asked for EUR 50k (max) - Will also apply for OSFF fund - Goal: Tooling for AMD platform images based on [earlier work](https://github.com/fiedka/romulan) - Max is EUR 5k ## 2025-06-09 ### Participants - Dennis Marttinen (Racklet) - Thierry Laurion (Heads) - Philip Molloy (LinuxBoot TSC) - Daniel Maslowski (LinuxBoot TSC) ### Topics - Philip: - Something for the book in the next 14 days - Make it succinct and exciting? - Community vs corporate development - Dennis: - LinuxBoot is competing with "you can just download Ubuntu.iso and run it" - Thierry: Why even Linux? - Daniel: - could be anything else, even Zephyr - https://antmicro.com/blog/2023/06/zephyr-as-bootloader-for-linux-on-riscv/ - Thierry - Why replacing UEFI DXEs by something else? - UEFI bloated by IBV/ODM choices (most of DXEs are there for unknown reasons by IBV/ODM (ref needed) - [Trammell Hudson, 33C3: Bringing Linux back to server boot ROMs with NERF and Heads ("Let Linux do it")](https://media.ccc.de/v/34c3-9056-bringing_linux_back_to_server_boot_roms_with_nerf_and_heads) - Firmware devs = linux devs (community + expertise) - How to replace UEFI DXEs by something else? - Fiano can remove hundred of DXEs (but requires hundred of hours of DXE removal + reboot to see if causes regressions: [OCP 2018, Ron Minnich - Firmware, the last frontier: Open System Firmware (OSF))](https://www.youtube.com/watch?v=4a1QHQ76it8) - UEFI: 3 possible entry points for Linuxboot : easy -> hard - UEFI Shell [Ron mistook it for DxeShell] (easy) : direct replacement with Linux - BdsDxe (medium): replace with linux FFS, depends on how well BdsDxe follows UEFI rules) - DXECore replacement (hard) : linux needs to run DXEs - Daniel: other binaries can be replaced; I've done that for the X270 - `utk x270.rom replace_pe32 Setup bzImage save x270_mod.rom` - x86 : Why wanting to replace UEFI altogether? - SMMSTORE: A SMM backed configuration store that persist across reboot - Why replacing UEFI by coreboot - No need of fiano to remove DXE - SMM on a diet - UEFI has SMMSTORE, which runs and can be modified through SMI (SMM) - This is why LinuxbootSMM is under development - Dennis: - Average person doesn't care about how a system boots. - LinuxBoot is for people that *do* care and have specific needs. - E.g. things UEFI does not fulfill. ## 2025-05-12 ### Participants - Richard Hughes (fwupd/LVFS) - Dennis Marttinen (Racklet) - Thierry Laurion (Heads) - Philip Molloy (LinuxBoot TSC) - Daniel Maslowski (LinuxBoot TSC) ### Topics - Richard: SBoM - Daniel: where should the line be drawn? - Richard: focus on core things that provide attack surface, e.g. image parsers - Daniel: single reference can suffice for open source distros - Richard: multiple SBoMs possible, e.g. per boot chain component vs one global SBoM - as part of build process, upload to LVFS - Daniel: or attach to GitHub? - there needs to be a way to obtain the SBoM data (from the OS?) - Richard: Partitioning, A/B updates - Daniel: even first stage? - Philip: some mask ROMs have multi-slot support for first code, need vendor/SoC specific headers - hardware ID - Dennis: for same hardware but different firmware, how to identify? - Richard's recommendation: change DMI data - device trees - Philip: DTs in Linux upstreamed maintained at high quality, with more rigor - funding matters - Philip: gotta do PoC first, gain traction, then approach e.g. Rockchip - Thierry: next NLNet funding round application deadline is June 1, 2025 - target platforms - Philip and Daniel want to focus on SBCs, same for Dennis for Racklet - Thierry sees interest in servers, such as older OCP hardware ## 2025-04-28 ### Participants - Chiao Yang () - Dennis Marttinen (Racklet) - Philip Molloy (LinuxBoot TSC) - Daniel Maslowski (LinuxBoot TSC) ### Topics - another introduction round, since we have some new faces - "awesome" list for LinuxBoot - Philip: Khadas and Radxa have their own firmware projects - https://docs.khadas.com/software/oowow/getting-started - https://docs.radxa.com/en/roobi - Daniel: want `fastboot` in LinuxBoot - Dennis: role of LinuxBoot group? Unification? - Daniel: clarify need for built-in modules / static kernel vs modules - What can be modules? LinuxBoot kernel would need to load them. - Daniel: prebuilt rootfs CPIOs for people to try out - retire https://github.com/linuxboot/u-root-builder ? - https://github.com/u-root/u-root-distro is a successor, needs fixups - Dennis: meaning of "LinuxBoot compliance"? - kexec loosely defined - verification steps? - Philip: non-defined interface is also a benefit; flexibility? - make kexec debugging easier - Dennis: provide clarity regarding boot protocols, features, subsets thereof etc - leave the choice to the distro whether they want ACPI/UEFI or not (!) - e.g. Windows needs WMI ## 2025-04-14 This is our first common meeting to reestablish a LinuxBoot community. ### Participants - Ziang Wang (ByteDance) - Thierry Laurion (Heads) - Jeremy Kerr (Petitboot) - Jean-Marie Verdun (HPE) - Philip Molloy (LinuxBoot TSC) - Daniel Maslowski (LinuxBoot TSC) ### Topics - getting to know everyone and our backgrounds - how everyone implements LinuxBoot, respectively

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