rpi4-osdev VS rust-raspberrypi-OS-tutorials

GitHub - isometimes/rpi4-osdev: Tutorial: Writing a "bare metal" operating system for Raspberry Pi 4

Basically i can compile and run this -> https://github.com/isometimes/rpi4-osdev/tree/master/part5-framebuffer (and i'm sure every other implementation) just fine but only if i load it with gdb through jtags and then hit continue (c). If i put the exact same kernel (kernel8.img) on the sd and disconnect any hw debugger, it gets stuck at the rainbow spash screen and won't continue. This is wheter enable_jtag_gpio is set to 0 or 1. This makes absolutely no sense to me and i'd love to get an opinion on why it behaves this way and if it underlines a bigger problem.

Something like this would be probably in the top 1% of hobby projects and as far as I can tell, it involves zero EE work: Writing a "bare metal" operating system for Raspberry Pi 4.

This might be of help: https://github.com/isometimes/rpi4-osdev (it’s for the RPi4, but I imagine most of it being applicable to the RPi1).

IMO the best way to get into this type of low-level tinkering is by writing a simple operating system.

https://github.com/isometimes/rpi4-osdev

There are other courses/projects for other boards. The keyword is usually “baremetal”.

For Linux drivers specifically there are training material from Bootlin for instance.

I am very interested in this tutorial for building an OS for the Raspberry Pi in Rust: https://github.com/rust-embedded/rust-raspberrypi-OS-tutoria...

I'd love to try it out when (if ever) I have the time.

I like rust, low level and embedded hacking so I programmed a simple "kernel", based on this: https://github.com/rust-embedded/rust-raspberrypi-OS-tutorials

So every week, I basically followed along these tutorials. I didn't even made an effort to fully understand the code I was copying, as I just didn't want to waste mental energy on it as I wanted that energy and time wasted on my focus at the time (C++ and JS). I did that for like a year, doing 1-3 tutorials/week from that site. Over the course of it, I got to build web apps, several compilers, several games mostly board games/3d shooters/2d multiplayer games, raytracers, peer to peer apps, building a networking stack, bots, blockchain apps, servers, PGP encryption, E2E encryption apps such as for messaging, built a NES emulator, virtual machines, simulators and graphics programming, etc. I'd say the longest one was learning to build a tiny OS on raspberry pi

Hello everyone, I'm not sure if this is possible, but I'll give it a shot. I have a raspberry PI zero and a linux host pc. I am trying to run stuff on the raspberry on bare metal, no OS below it (using this tutorial https://github.com/rust-embedded/rust-raspberrypi-OS-tutorials/). Now in the tutorial 4 there is a step "flash the kernel onto SD card and insert the SD card into the raspberry". Now, given my lack of SD card adapter (I'm also curious) I wanted to ask if it is possible to deliver this kernel onto the raspberry without the SD card using USB.

I believe it already exists: https://github.com/rust-embedded/rust-raspberrypi-OS-tutorials

Is this just an alternative UI for GitHub but without the files? Am I missing something obvious? I'm confused.

Actual github repo for anyone looking for the files: https://github.com/rust-embedded/rust-raspberrypi-OS-tutoria...