July 27, 2023 - I saw you were using the soft-float target, does the pi 4 not have a hardware floating point unit or was that just to make things easier? ... Yes! The arm core used by Rasp has a FPU. Honestly, I just copied from rust-raspberrypi-OS-tutorials

This is it! You've built Rust code for bare metal arm that will run on the Raspberry Pi!

August 21, 2016 - My goal was to achieve that with as little assembly as possible, bringing all the cool stuff to Rust, and to my surprise, this was something fairly easy to achieve. To get started we’re going to need `arm-none-eabi` toolchain, for cross-compiling, Rust nightly with `libcore` compiled for this architecture, Raspberry’s boot files and a Raspberry Pi B+ to run our code.

The first thing to do is to install the required tools to build the bare metal kernel we are about to develop. This is done using your prefered CLI like git bash, powershell on Windows.

Looks to me that if you take the bare metal Rust you will have a lot of work to do to get it running on the Pi. Presumably there is no run time support, no drivers for any peripheral hardware etc, etc, You would effectively have to write a mini OS for yourself to get it running.

July 27, 2023 - The datasheets use the Legacy Master addresses, but the Raspberry use the “Low Peripheral” mode by default. So we need to translate the addresses 0x73nn_nnnn to 0xFEnn_nnnn. We want to blink the green led built-in on board, that is pin 42 (this could be found on Linux device tree), so we ...

Hi all. This repository aims to provide easy reference code for programming bare metal on the Raspberry Pi 3 in the Rust systems programming language.

February 21, 2025 - Hello, I am as you can see an absolute newcomer to Rust and did not find any helpful information on whether I can compile Rust code bare metal for a RaspberryPi 4b. I want to do this because I want to build an operatin…

January 19, 2016 - Yes, and that is unsafe. Rust makes you put that in an unsafe block, to encourage you to build safe interfaces. This is a good thing · The alternative to name mangling is not having a module system, with all the fun name conflict issues that come with it. Rust made the right decision here

An experiment in bare metal programming the Raspberry Pi using Rust - csgero/picrust

January 20, 2026 - Instead, he decided to program the device directly — creating a program in Rust that, when compiled, can be booted directly on the Raspberry Pi with no intervening operating system. "We want to compile code for a specific architecture, this mean we’ll need to cross-compile the code because the architecture of our PC is different from the one on the [Raspberry] Pi," Stirnemann explains of the process. "We also want to use it bare metal which means we don't want it to run on an existing operating system so we can't use existing OS libraries."

July 30, 2021 - The Raspberry Pi has a lot of tutorials and examples, it’s hard to brick, it can netboot, it has user and kernel mode, and it has GPIO that would be fun to play with. When I got the board, I first loaded Rasbian and played around with it for a little while. Then I started trying to do bare metal. I was following a Rust tutorial which was very helpful for setting up cross compiling, turning the elf file into a binary, disassembling to debug, etc.

Tue Nov 08, 2022 7:57 pm thats an aarch64 binary, but the pi-zero is armv6 only rustc doesn't support any targets for armv6, actually, so I'm currently following https://wiki.osdev.org/Raspberry_Pi_Bare_Bones_Rust, maybe it'll work...

If you are interested in this, then I suggest to take a look at the brilliant Circle C++ library, which not only contains the mandatory C++ runtime, but also implements every Raspberry Pi functionalities we're about to discuss in these tutorials (and even more). Simply because my personal opinion is that Rust is a much higher level language than preferable for bare metal, something like with C++. But if you provide the required runtime libraries, you can do it.

This repository aims to provide easy reference code for programming bare metal on the Raspberry Pi 3 in the Rust systems programming language.

October 2, 2020 - What does he mean by this? Rust has no-std mode, you can run it on an ARM M0 if you so desire · That said, nobody is obligated to use Rust. He should write his tutorial in whatever he wants. This isn't an actual blocker, though

Fortunately, @swarren has not only been working on u-boot for the 3B, but also some other "bare metal" odds and ends. The one that I really needed was this: a dead-simple demo of serial I/O on the 3B (the 64/ folder contains the code I used). Once I got that working, I felt like I was ready to jump back into the Rust part of things.

I am working on bare metal programming for a Raspberry Pi 3. I have been able to blink a light using a tutorial and I am now trying to do the same in Rust. My project contains the following files:...

I have written a start function in assembler which is able to call a rust function. I am currently trying to initialize and draw a single color to the frame buffer. When I try this and run in on my pi, the default gradient stops showing and the screen goes black. However, nothing else shows. Is there a reason why this is the case? ... //! This module provides an interface to the raspberry pi's built in gpu use super::mmio; const MBOX_BASE_OFFSET: usize = 0x0000b880; pub fn init() -> Result<FBInfo, ()>{ let fb_info = FBInfo { width: 1920, height: 1080, v_width: 1920, v_height: 1080, pitch: 0, b