uefi-rs
axiom
uefi-rs | axiom | |
---|---|---|
15 | 7 | |
1,194 | 40 | |
1.6% | - | |
9.5 | 7.0 | |
3 days ago | 6 months ago | |
Rust | Nim | |
Mozilla Public License 2.0 | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
uefi-rs
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I wrote a tiny decrypting UEFI bootloader
Hi, did you know that you can write UEFI-code with Rust? You can, using uefi-rs!
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This Month in Rust OSDev: February 2023
Thanks for pointing that out. I've filed https://github.com/rust-osdev/uefi-rs/issues/685
- [uefi-rs] - How can you load an arbitrary Rust UEFI protocol without so many crazy ass steps?
- Strange mutable/non-mutable borrow errors with "uefi" crate
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This Month in Rust OSDev: April 2022
I'm extremely confused as to what's going on here. I think it might be related to Line 129: https://github.com/rust-osdev/uefi-rs/blob/main/src/table/system.rs
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Writing a Simple Operating System – From Scratch [pdf]
First off I don't recommend implementing the specification from scratch. It is big, and there are implementations already in various languages: for C you can use GNU-UEFI, for example, and for Rust you can use uefi-rs. Zig even has it in its standard library! These take care of the fiddly details of interacting with the UEFI firmware's services.
There's tutorial type articles for these around: for C there's https://wiki.osdev.org/UEFI_App_Bare_Bones, for Rust there's this template https://github.com/rust-osdev/uefi-rs/tree/main/template and the crate's documentation.
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UEFI vs BIOS. How much does it actually matter now of days?
A few people have made some progress into working with UEFI in Rust, and the results are here: https://github.com/rust-osdev/uefi-rs
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Would someone mind helping explain where this code actually is?
use uefi::prelude::Handle; points to uefi-rs/src/prelude.rs found here: https://github.com/rust-osdev/uefi-rs/blob/master/src/prelude.rs
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Unable to boot UEFI/Rust in QEMU
Here is an UEFI app/example that should show you how to write a UEFI bootloader.
- Rustで自作OS 3日目
axiom
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D Programming Language
> kernel developers do not allow third party runtimes in the kernel. Even meager Rust's "panic" runtime is a contentious
Much in Linux is contentious :-) which is why the module system is nice. A kernel module for C code requires no permission from Linux-core unless you need it distributed with the kernel (which, yes, might be required for "credibility" - but critically also might not). It may require many decls to access various kernel APIs, but those can be (semi-)automated or just done as-needed. So, Linux kernel policy is not so relevant (at best) which is what I meant by "no special support" (admittedly brief). Kernel coding is always a bit trickier, and you may need to build up some support code to make integration nice, though as well as decl generators.
> Can one disable runtime in Nim completely -- no GC, no exceptions?
To answer your question, and as discussed elsewhere in this subthread, Nim has many options for memory management.. only stdlib seq/string really needs automatic methods. One can disable the runtime completely via os:standalone and statically check that no exceptions are raised with Nim's effect system (and there are also both setjmp & goto based exception impls which may/may not be workable in Linux/BSD kernel module settings). As "proof more by example", a few people have written OS kernels in Nim recently[1,2] and there was another toy kernel long ago[3].
People have also written OS kernels in Go which "has a GC and runtime".[4] So, I acknowledge it's not quite the same example, but I also see no fundamental blockers for kernel modules.
[1] https://github.com/khaledh/axiom
[2] https://prosepoetrycode.potterpcs.net/2023/01/a-barebones-ke...
[3] https://github.com/dom96/nimkernel
[4] https://github.com/mit-pdos/biscuit/
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Was Rust Worth It?
I gave Rust a few chances, and always came out hating its complexity. I needed a systems programming language to develop a hobby OS[1], and Nim hit the sweet spot of being very ergonomic, optional GC, and great interop with C. I can drop down to assembly any time I want, or write a piece of C code to do something exotic, but the rest of the system is pure Nim. It's also quite fast.
[1] https://github.com/khaledh/axiom
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Nim v2.0 Released
I've used both to work on a hobby OS project (Nim[1], Zig[2]). I very much prefer Nim. Code is succinct, elegant, and lets you focus on your core logic rather than fighting the language.
Zig is nice and I like its optionals support and error handling approach. But I was put off by its noisy syntax, e.g. !?[]u8 to represent an error union of an optional pointer to a many-pointer of uint8. Also having to prepare and weave allocators throughout most of the code that needs to dynamically allocate (which is most of the code) gets in the way of the main logic. Even little things like string concatenation or formatting becomes a chore. Zig also doesn't have dynamic dispatch, which makes polymorphic code hard to write; you have to work around it through some form of duck typing. In the end I realized that Zig is not for me.
[1] https://github.com/khaledh/axiom
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Ask HN: Why did Nim not catch-on like wild fire as Rust did?
Niceness is subjective, but Nim is just as valid an addition to that group. Nim compiles to C and has had an --os=standalone mode for like 10 years from its git history, and as mentioned else-thread (https://news.ycombinator.com/item?id=36506087) can be used for Linux kernel modules. Multiple people have written "stub OSes" in it (https://github.com/dom96/nimkernel & further along https://github.com/khaledh/axiom).
While it can use clang as a backend, Nim does not rely upon LLVM support like Zig or Rust (pre-gcc-rust working). Use on embedded devices is fairly popular: https://forum.nim-lang.org/search?q=embedded (or web search).
Latency-wise, for a time, video game programming was a perceived "adoption niche" or maybe "hook" for Nim and games often have stringent frame rendering deadlines. If you are interested in video games, you might appreciate https://github.com/shish/rosettaboy which covers all but Ada in your list with Nim being fastest (on one CPU/version/compiler/etc). Note, however, that cross-PL comparisons are often done by those with much "porting energy" but limited familiarity with any but a few of the PLs. A better way to view it is that "Nim responds well to optimization effort" (like C/Ada/C++/Rust/Zig).
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Writing a Simple Operating System – From Scratch [pdf]
If anyone is interested, I have a couple of implementations of booting under UEFI and getting a bunch of info about the system (don't expect a functioning system, they just boot and dump some info):
Nim: https://github.com/khaledh/axiom
Zig: https://github.com/khaledh/axiom-zig (this one goes into depth in disassembling ACPI DSDT bytecode)
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Assembly Nights
I wasn't ready to share it yet, but here it goes[1]. It's at a very early stage, but should give you an idea of how to get things up and running under Nim.
I didn't avoid malloc. I provided a simple bump pointer based heap to get things going. Later I'll have to separate things into a UEFI bootloader and a proper kernel image, each with its own allocator (the bootloader will use UEFI memory allocation services, and the kernel will have its own heap).
[1] https://github.com/khaledh/axiom
What are some alternatives?
minimal_uefi - A minimal Rust project to get started with UEFI
NimForUE - Nim plugin for UE5 with native performance, hot reloading and full interop that sits between C++ and Blueprints. This allows you to do common UE workflows like for example to extend any UE class in Nim and extending it again in Blueprint if you wish so without restarting the editor. The final aim is to be able to do in Nim what you can do in C++
uefi_rust
axiom-zig - A 64-bit kernel implemented in Zig
bootloader - An experimental pure-Rust x86 bootloader
rosettaboy - A gameboy emulator in several different languages
blog_os - Writing an OS in Rust
nimkernel - A small kernel written in Nim
littleosbook - Source for the little book about OS development
math-compiler - A simple intel/AMD64 assembly-language compiler for mathematical operations
oreboot - oreboot is a fork of coreboot, with C removed, written in Rust.
linux - Linux kernel source tree