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#+title: Awesome Open Source Firmware

This is a curated list of links, tools and resources that aid in the development / help one run (free) and open source firmware.

* Introductory Material

This should get you started

- [[https://en.wikipedia.org/wiki/Firmware][Wikipedia on Firmware]]


* Software

** Tools

- [[https://github.com/chipsec/chipsec][chipsec]] -- platform security assesment framework
- [[https://github.com/coreboot/chrome-ec/blob/main/README.md][chrome-ec]] -- The Chromium OS project includes open source software for embedded controllers (EC) used in recent ARM and x86 based Chromebooks. This software includes a lightweight, multitasking OS with modules for power sequencing, keyboard control, thermal control, battery charging, and verified boot.
- [[https://review.sourcearcade.org/flashprog][flashprog]] -- fork of flashrom that tries to avoid bricking your hardware
- [[https://github.com/flashrom/flashrom][flashrom]] -- flasher+reader utility to write/dump firmware
- [[https://fiedka.app/][fiedka]] -- graphical firmware editor app
- [[https://github.com/LongSoft/UEFITool][UEFITool]] -- UEFI (PI) firmware viewer and editor
- [[https://github.com/fiedka/me_fs_rs][me_fs_rs]] -- This is a work in progress parser for Intel (CS)ME firmware images. Most of this work is based on other implementations and public research. References are within the code.
- [[https://github.com/fiedka/romulan][romulan]] -- Rust library for parsing a number of firmware images
- [[https://chromium.googlesource.com/chromiumos/platform/vboot_reference][vboot]] -- Google's Verified Boot reference implementation (versions 1.x & 2.x) and helper tools

** Libs

- [[https://github.com/coreboot/coreboot/blob/main/payloads/libpayload/README][libpayload]] -- what coreboot payloads are made with

** SDK

** Exploits
- [[https://www.binarly.io/logofail][LogoFAIL]] -- image parsing done wrong
- [[https://codeberg.org/libreboot/deguard][deguard]] -- disabling Intel BootGuard on MEv11 platforms

* Firmware

** Platform

*** [[https://review.coreboot.org][coreboot]] -- follow the white rabbit
**** Utils

utilities that apply to coreboot mostly/only.

**** Distros

assembled builds of the coreboot project.
If you're hungry but not in a mood to cook you can choose from these meals that should get you going.

- [[https://doc.coreboot.org/distributions.html][coreboot distributions]] -- hit this one first if you've no idea what the matter is
- [[https://github.com/Dasharo/meta-dts/releases][dasharo]] -- 3mdeb's distro of coreboot
- [[https://libreboot.org/download.html][libreboot]] -- pre-assembled coreboot distro that eases friction
- [[https://docs.mrchromebox.tech/][MrChromeBox]] -- If your devices says "Chrome" on the outside you'll probably want to go with this
- [[https://www.gnu.org/software/gnuboot/web/manual/gnuboot.html][gnuboot]] -- if your requirements dictate so and you're loving OLD hardware go here.
- [[https://github.com/linuxboot/heads][heads]] -- A minimal Linux that runs as a coreboot or LinuxBoot ROM payload to provide a secure, flexible boot environment for laptops, workstations and servers.
- [[https://github.com/merge/skulls][skulls]] -- not quite HEADS


*** [[https://github.com/u-boot/u-boot][u-boot]] -- bootloader for embedded based boards

** Device Level

- [[https://www.zephyrproject.org/][zephyr]] -- a proven RTOS ecosystem by devs for devs

** Manageability

- [[https://github.com/u-root/u-bmc][u-bmc]] -- OpemBMC but with u-boot
- [[https://github.com/facebook/openbmc][openbmc (FB)]] -- Facebook's OpenBMC implemenation
- [[https://www.openbmc.org/][openbmc (LF)]] -- LinuxFoundation's OpenBMC implemenation

* Hardware

** Devices

Info about what you should (not) buy

- [[https://docs.chrultrabook.com/docs/firmware/supported-devices.html][chrultrabook]] -- supported devices list
- [[https://doc.coreboot.org/mainboard/index.html][coreboot]] -- (outdated+incomplete) list of supported mainboards
- [[https://openwrt.org/toh/start][OpenWRT]] -- Table of Hardware
- [[https://wiki.gentoo.org/wiki/Coreboot][Gentoo Wiki]] -- Coreboot Supported Devices

** Boards/ SoCs

Useful utilities that help you do firmware stuff.

*** Flasher / Programmer

- [[https://www.onetransistor.eu/2017/08/ch341a-mini-programmer-schematic.html][ch341a]] -- affordable but does its job
- [[https://github.com/9elements/picoprog][picoprog]] -- Picoprog is a firmware for the Raspberry Pi Pico that provides a USB-to-serial and USB-to-SPI bridge. It allows you to communicate with UART and SPI peripherals via USB.
- [[https://github.com/stacksmashing/pico-serprog][pico-serprog]] -- This is a basic flashrom/serprog compatible SPI flash reader/writer for the Raspberry Pi Pico.

** ISA

* Resources

** Guides

** Documentation

Good reads

- [[https://3mdeb.com/products-documentation/][3mdeb]]
- [[https://www.barebox.org/doc/latest/index.html][barebox]]
- [[https://doc.coreboot.org/][coreboot]]
- [[https://github.com/linuxboot/fiano/blob/main/pkg/intel/metadata/README.md][fiano]]
- [[https://osresearch.net/][HEADS wiki]]
- [[https://libreboot.org/docs/][libreboot]]
- [[https://book.linuxboot.org/][LinuxBoot -- Book]]
- [[https://www.linuxboot.org/page/faq/][LinuxBoot -- FAQ]]
- [[https://seabios.org/Developer_Documentation][SeaBIOS]]
- [[https://docs.u-boot.org/en/latest/index.html][uboot]]

** Data Sheets

** Videos

*** Talks

- [[https://www.osfc.io/archive/2024/][OSFC Recordings Archive]]

*** Tutorials
*** Courses

** Blog posts

- [[https://blog.3mdeb.com/][3mdeb's Blog]]
- [[https://9esec.io/blog/][9elements' Blog]]
- [[https://libreboot.org/news/][LibreBoot's Blog]]
- [[https://trmm.net/][Trammell Hudson's Blog]]

** Literature

* Social

Get in touch with firmware folks



* Conferences

- [[https://www.osfc.io/][OSFC]] -- Open Source Firmware Conference (annually around October)

* Companies

** The good

These companies actively contribute to open source firmware and might help you implement it to your needs.

- [[https://3mdeb.com/][3mdeb]] (PL) -- firmware company doing consulting, research, development and attestation
- [[https://9elements.com/][9elements]] (DE) -- firmware company doing consulting, research, development and attestation
- [[https://system76.com/][System76]] (US) -- hardware vendor, supports coreboot devices
- [[https://novacustom.com/][NovaCustom]] (NL) -- Laptop/PC retailer that endorses coreboot-supported hardware

** The bad

These companies do propietary firmware.

- +[[https://www.ami.com/][American Megatrends Inc.]]+
- +[[https://www.insyde.com/][insyde]]+
- +[[https://www.phoenix.com/client-firmware/][phoenix technologies]]+

** The ugly