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biors – BIOS implementation in Rust language

Gabriel Majeri has created “biors”, a BIOS implementation written in Rust! It is only a few days old, does not appear to be ready for use yet.

biors – The Basic Input / Output Rust System

This repository contains an x86 platform firmware implementation – more commonly known as a BIOS. It is written in Rust, and is designed for modern x86_64 processors. Similarly to CoreBoot, it is designed to deliver a “payload” – this could be a PC-AT compatible BIOS, or a UEFI implementation. BIOS is pronounced “BY-oss”, this project is pronounced “BY-orss”.[…]

https://github.com/GabrielMajeri/biors

PS: Gabriel has also written C++ bindings for UEFI! 😉
https://github.com/GabrielMajeri/uefi-cpp

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kernelstub

Ian Santopietro of System76 has a Python-based tool called kernelstub, which boots Linux using the Linux Stub bootloader instead of an external bootloader.

Kernelstub is a basic program enabling booting from the kernel’s built-in EFI Stub bootloader. It keeps the ESP and NVRAM up to date automatically when the kernel updates and allows for modifying and setting the boot parameters/kernel options stored in NVRAM. Kernelstub is a basic program enabling booting from the kernel’s built-in EFI Stub bootloader. It keeps the ESP and NVRAM up to date automatically when the kernel updates and allows for modifying and setting the boot parameters/kernel options stored in NVRAM. It works by detecting certain information about the running OS, kernel, storage devices, and options, then combines all of that together into a unified entity, then calls efibootmgr to register the kernel with the NVRAM. It also copies the latest kernel, initrd.img to the EFI System Partition so that UEFI can find it. It will also store a copy of the kernel’s command line (/proc/cmdline) on the ESP in case of necessary recovery from an EFI shell.

https://launchpad.net/kernelstub

He just gave a talk/demo of it at SeaGL:

https://osem.seagl.org/conferences/seagl2017/program/proposals/326

His presentation mentioned this blog in the ‘more info’ slide! 🙂

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SisyphOS: UEFI-based Rust kernel

sisyphos-kernel-uefi-x86_64: UEFI-based Rust kernel

A Rust kernel running on bare UEFI (no separate bootloader). Very early stage. Basically, the eventual goal is to build a non-opinionated microkernel that can load regular ELF64 programs as kernel “modules”. Actually, just fairly conventional processes, except running in kernel space (they are assumed to be written in Rust and reproducible, so that hardware protections are unnecessary, similar but unrelated to Microsoft’s Singularity project). The core micro/nano/whateverkernel will link up the loaded applications with a builtin dynamically linked library that exposes its functionality, moving the responsibility for higher-level problems (such as syscalls) into these loadable binaries, and also allowing simple emulation without virtualization for debugging purposes.[…]

https://github.com/le-jzr/sisyphos-kernel-uefi-x86_64
https://github.com/le-jzr/sisyphos-kernel-uefi-x86_64/wiki/Random-notes

 

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Two new Rust/UEFI projects by Jiří Zárevúcky

Two new Rust/UEFI projects:

rust-efi-app: High-level bindings for writing UEFI applications in Rust. Currently in very early stages. The goal is that the library will make it easy and safe to write an application (e.g. an OS kernel) that is capable of functioning across call to ExitBootServices() without depending on the programmer’s judgement for safety, transparently dealing with issues like memory allocations and console output.

https://github.com/le-jzr/rust-efi-app

rust-efi-types:  Autogenerated Rust bindings for UEFI types and methods. Generated using bindgen from the headers distributed with gnu-efi. The headers are included. Only works on x86_64, and I don’t plan to extend it to other platforms, or clean it up in any way, because it’s all just a giant hack so that I don’t have to waste much time on proper bindings at this moment. Eventually, it will outlive its usefulness and be unceremoniously dumped into trash.

https://github.com/le-jzr/rust-efi-types

 

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