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Linux Runs on Raspberry Pi RP2350's Hazard3 RISC-V Cores (2024)

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Re: Linux Runs on Raspberry Pi RP2350's Hazard3 RISC-V Cores (2024)

#31

Post by ge96 »

walterbell wrote: post #27

Linux on Pi Zero can be used as a sidecar for iPads. https://schwarztech.net/articles/my-ipads-raspberry-pi-sidec... This method configures the Raspberry Pi [Zero] in “gadget” mode, creating a private link that appears as a wired Ethernet connection over a USB cable. The Pi’s address will never change, either as it is also a DHCP server for the iPad. As an added bonus, the same cable powers the Pi, creating a setup a…

Gotta get Pi Zero 2, way stronger hardware

side note: I wish it had more ram so you could mount it in VS Code vs. developing through SSH

Re: Linux Runs on Raspberry Pi RP2350's Hazard3 RISC-V Cores (2024)

#32

Post by dmitrygr »

RobotToaster wrote: post #21
PunchyHamster wrote: post #11

after https://dmitry.gr/?r=05.Projects&proj=35.%20Linux4004 nothing's really impressive when it comes to making it run linux, doubly so that it runs just normal Debian userspace

Has anyone run linux on thermionic valves yet?

I’m on it

Re: Linux Runs on Raspberry Pi RP2350's Hazard3 RISC-V Cores (2024)

#33

Post by PunchyHamster »

b00ty4breakfast wrote: post #23
PunchyHamster wrote: post #11

after https://dmitry.gr/?r=05.Projects&proj=35.%20Linux4004 nothing's really impressive when it comes to making it run linux, doubly so that it runs just normal Debian userspace

Is that the same Dmitry that got the linux kernal to run on an atmega?

also on 3 8 pin chips. I listened to interview with him and he decided to wait 10 years to give competition a chance then try to do it on raw transistors or vaccuum tubes

Re: Linux Runs on Raspberry Pi RP2350's Hazard3 RISC-V Cores (2024)

#34

Post by PunchyHamster »

hdndndb wrote: post #28
PunchyHamster wrote: post #11

after https://dmitry.gr/?r=05.Projects&proj=35.%20Linux4004 nothing's really impressive when it comes to making it run linux, doubly so that it runs just normal Debian userspace

Running native vs running under emulation is a complete different beast Any turning machine can boot Linux under emulation

turing machines are far superior to 4004 to, normal machines don't have infinite memory for example

Re: Linux Runs on Raspberry Pi RP2350's Hazard3 RISC-V Cores (2024)

#36

Post by balou23 »

dmitrygr wrote: post #32
RobotToaster wrote: post #21

Earlier quoted context omitted.

Has anyone run linux on thermionic valves yet?

I’m on it

You'd better be, we have certain expectations from you now /s

But more seriously... I don't think that Linux has ever been booted on a non-monolithic CPU (I wanted to say 'discrete cpu' first, but there's some PDP-11s with 4 chip CPUs)

Re: Linux Runs on Raspberry Pi RP2350's Hazard3 RISC-V Cores (2024)

#37

Post by walterbell »

Aurornis wrote: post #30
walterbell wrote: post #27

Linux on Pi Zero can be used as a sidecar for iPads. https://schwarztech.net/articles/my-ipads-raspberry-pi-sidec... This method configures the Raspberry Pi [Zero] in “gadget” mode, creating a private link that appears as a wired Ethernet connection over a USB cable. The Pi’s address will never change, either as it is also a DHCP server for the iPad. As an added bonus, the same cable powers the Pi, creating a setup a…

The Pi Zero is a full SoC which naturally runs Linux. Any Linux SoC with USB (so basically all of them) could use used in the same way. This article is about the RP2350's microcontroller cores. It doesn't even have an MMU, so running Linux on it is much more interesting. It's not as capable as the normal Linux we run on bigger boards, but it's still interesting.

Could Linux on RP2350 cores work with iPad via Pi Zero form factor, with microSD storage to supplement iPad?

https://www.cnx-software.com/2025/07/08/rp2350-pizero-rp2350...

Re: Linux Runs on Raspberry Pi RP2350's Hazard3 RISC-V Cores (2024)

#38

Post by Perz1val »

PunchyHamster wrote: post #11

after https://dmitry.gr/?r=05.Projects&proj=35.%20Linux4004 nothing's really impressive when it comes to making it run linux, doubly so that it runs just normal Debian userspace

Linux in PDF was impressive in a different way

Re: Linux Runs on Raspberry Pi RP2350's Hazard3 RISC-V Cores (2024)

#39

Post by wbsun »

Oh running Linux on a MCU without MMU.

I feel there is a gap between MCU and modern CPU, and also between the software running on top of them. The missing piece is a mid-size computer with: - A processor, single or multi-core, with computing power like 20 years ago, but modern fabrication process. Maybe without MMU for simplicity. - RAM between 100MB~1GB and DDR2/3 bandwidth. - An OS designed and implemented for this type of hardware rather than tailored Linux.

I don't think you can use it for working or your daily entertainment, so I guess not a good business to attract interests.

Re: Linux Runs on Raspberry Pi RP2350's Hazard3 RISC-V Cores (2024)

#40

Post by ipdashc »

danhor wrote: post #5
sylware wrote: post #2

I wish I could buy RP2350 with the ARM cores being hard-fused disabled, "cheaper" since no ARM royalties would have to be paid. That said, I wonder how much they did improve their hazard3 design, because we all know the future is no PI locked ARM cores. I wonder if they are sharing part of the design of other open source RISC-V cores. If those efforts are kept significant, the future is looking good and better there.…

The Hazard 3 is basically a hobby project of Luke Wren, a Raspberry Pi Employee. He's contiuing to evolve it further, but I don't think it's ready for a full replacement of the Cortex-M yet, especially in regards to the Security Features. The source code is all from Luke Wren and I don't think other cores use the source code directly, but improvements to test harnesses or general implementation patterns as well as be…

I know the "basically" is probably doing a bunch of heavy lifting, but dang, that's still awesome to think about. I didn't know hardware development was at the point where a hobby project CPU, apparently mostly developed by one guy, can realistically end up in a mass produced product like that.

Quick edit: sounds like "basically" wasn't doing that much heavy lifting after all, wow https://www.raspberrypi.com/news/risc-v-on-raspberry-pi-pico...

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