Daniel aka CyReVolt 🐢 @CyReVolt@mastodon.social

IT WORKS!!!!! 🥳

We can now fully boot the Allwinner D1 RISC-V SoC in #Rust, from flash right into #Linux, demoed on a Lichee RV + Dock. :-)

The full flow:
boot0 (ROM/SRAM) -> #oreboot (DRAM) + #RustSBI -> #LinuxBoot (Linux + u-root)

The last issue was a stupid one again. I had sorta crapped up arithmetics again. :D

If you have a D1 with a NOR flash (16MB / 128Mbit), you can try it out:
https://metaspora.org/oreboot-linuxboot-licheerv-spinor.rom

In the coming weeks, we will iron a few things out and do a writeup on everything.

I am happy to announce #Fiedka the #firmware editor v1.3.4 🥳

Now with a nice welcome screen, toolbar, CBFS (coreboot) parsing and #UEFI editing capabilities. You can remove DXEs, and if space allows, replace BdsDxe with your own app to roll out https://linuxboot.org via the #LinuxBoot button. Someone has already done that on real hardware, as I heard. \o/

Download and more information: https://fiedka.app 🐙

PS.: Progress on the AMD PSP analysis is also happening (see screenshot). :-)

wheeeeee :-)

I GOT IT!!! WOOHOO IT WORKS!!!!!!! \o/ \o/ \o/

Look closely, look *closely* at what you are seeing!

This is #cpu, connecting to a remote machine (a camera, if you're curious), running a binary that is *actually* on the host I am coming *from*. HECK YEAH - WE'RE THERE!!! 🥳🥳🥳

Finally, here is the #demo I had hacked into #coreboot + #SeaBIOS and released at Revision 2019. \o/

https://youtu.be/E33LvpmH5JQ

Hey Fediverse, I've been working on some ideas around #UEFI #firmware, based on some #Rust PoC/example code for a UEFI PI implementation and a UEFI test app. For https://fiedka.app, I intend to build up a monitoring/probing environment for reversing, auditing, fixing, #exploitation and development.

Who's interested in this?

See also:
https://github.com/fiedka/fiedka/issues/73
https://github.com/jyao1/rust-firmware/pull/34
https://github.com/orangecms/uefi-rs/tree/smm-fun

This year's #OSFC is excellent - what a lineup!

Tons of great talks on #firmware, #security, and needs for openness.

https://www.osfc.io/2022/schedule/

We can boot a bunch of operating systems now with #oreboot on the Allwinner D1, both S-mode and M-mode payloads (PR for the latter is WIP, but works already).
This includes MnemOS, xv6, Linux and r9.

Here is r9 kexec'ed from the LinuxBoot environment via cpu over USB.

once again some #urban #street #art

Hey everyone, how do you like the idea of plugging a #CPU into your #USB port just like #external storages or GPUs?

You will be able to use it right away. It can be a foreign architecture. And this is how it works: Compile a program (app, CLI, whatever you like) for it, or use a prebuilt binary, Docker image, etc.. Then you just run:
cpu name-of-external-cpu /path/to/your/app

That's it! This is the magical `cpu` command. :-)

https://github.com/u-root/cpu

AMIGAAAAAAA!!!

We're now running #Doom via `cpu` over USB gadget ethernet on the MangoPi MQ-Pro (D1 RISC-V SoC).

It took a few steps to get there.

And finally, we're now drafting a nice setup menu - henceforth named teaboot. :)

What do you think:

Are many professional glue code sniffers also hobby software arsonists to keep a balance?

Look, we can `cpu` over USB on the Allwinner D1!

This is excellent given that many board do not have an ethernet port. Thanks @bitshiftmask for reminding me of the USB gadget ethernet mode, it's the most awesome thing ever! \o/

Whaddup #hackers? Are you rewriting everything in #Rust?

I'm happy to return back to #OSFC (https://osfc.io) with two talks, summarizing the tremendous international success we're having in the #oreboot project (https://github.com/oreboot) designing and implementing #firmware for RISC-V platforms and outlining the audit and annotation features in #Fiedka the firmware editor (https://fiedka.app) to support fulfilling the software supply chain #security requirements as demanded in the US Executive Order 14028 Section 4e.

Gotta ramp things up a bit, so here's news on #oreboot on the #VisionFive: I've figured out that we already had the code for switching to the other UART pin header, and documented and reenabled things.

So yay, we can now start booting from SRAM and output is good! \o/

In next week's live stream, we'll see about a second stage where we bring #RustSBI into the mix. We may introduce the #xtask based build setup already.

So what are we going to explore in today's #oreboot and #RISCV stream?

I'll try a run from flash on the #VisionFive, and then step back a bit and talk about the #firmware boot flow, flash layout, and building up a #framework.

See you again at 20:00 CEST!

https://twitch.tv/cyrevolt

Development: #Fake it till you make it!

#Security: Shake it till you break it!

How's your #software doing?

Jill sees Trish measuring with a multimeter, asking: "What's the current voltage?", and Trish responds: "The power."

What's up, folks? How are your electronics doing?

Decompression in #oreboot now works :-)