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)
#2I 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. Hopefully, all that will be a success (=latest silicon process, ultra-performant RISC-V implementation in mobile/embedded/desktop/server).
Re: Linux Runs on Raspberry Pi RP2350's Hazard3 RISC-V Cores (2024)
#3It would probably make more sense to target something like this https://www.hackster.io/news/andrew-bunnie-huang-prepares-th... with linux, has MMU and more RAM.
Re: Linux Runs on Raspberry Pi RP2350's Hazard3 RISC-V Cores (2024)
#4It would probably make more sense to target something like this https://www.hackster.io/news/andrew-bunnie-huang-prepares-th... with linux, has MMU and more RAM.
This one runs Linux on the ARM cores rather than the RISC-V cores in the same package, so it's apples and oranges, but still pretty neat for something that comes essentially with a companion MCU and is in the same form factor:
In embedded systems it's very common to have a bigger SoC and a satellite MCU to handle e.g. network comm and power lifecycle. I've still not really tried out my Milk-V Duo, but it's interesting to get a combo like this in a hobbyist board form factor.
They also claim desktop-class performance for this RISC-V-based miniITX board, it's a bit weird though since it doesn't claim RVA23 compliance:
Re: Linux Runs on Raspberry Pi RP2350's Hazard3 RISC-V Cores (2024)
#5I 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 better software support help other cores: https://github.com/Wren6991/Hazard3
For the SoCs I would expect to see an off-the-shelf Risc-V core (certainly no Hazard3 as the main CPU), but we'll see.
Re: Linux Runs on Raspberry Pi RP2350's Hazard3 RISC-V Cores (2024)
#6I don't even know what would be the point of such device, and if there really is a market for it for tech companies. I would say yes?
As a consumer, all I want if a very minimal "phone", with wifi, touch screen, battery, but no 4g or mobile networking, and linux on it. Just the cheapest, smallest, wifi, battery-powered, touchscreen LCD device that could exist that can run executables.
People are going to say "but just buy a cheap phone", but I cannot really run custom software on those, I can't expect to install a custom system image, and generally even cheap phones CPU SOC are way way too powerful. Open source phones are generally crazy expensive and very powerful, and I am not going to buy those.
With the range of hardware that exist out there, I think such device could cost about 60 euros, and it would be more interesting than a RPI.
The RPI is an amazing product, but it lacks an all integrated consumer device with an actual screen and battery. Of course I can already build one with a compute module etc, but it's not really portable and not designed around a flat battery.
Re: Linux Runs on Raspberry Pi RP2350's Hazard3 RISC-V Cores (2024)
#7I 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.…
You can probably already get that if you order a somewhat significant amount of chips directly from Raspberry Pi. They seem to already have everything required for it, it's literally just setting a bit differently during factory programming.
But I'm assuming you're talking about for consumer use, in which case my question is why? There is absolutely no way you're ever benefiting from them spinning up an extra SKU with significantly less volume (most people want the ARM cores).
Even if they decide to eat the costs for the benefit of consumers, at most the chip would be what, 15 cents cheaper? I really struggle to see how that's a meaningful difference for hobbyist use.
Re: Linux Runs on Raspberry Pi RP2350's Hazard3 RISC-V Cores (2024)
#8I 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…
linux started as a hobby project...
I am curious to know which RISC-V design they'll go for in this SOC.
M. Wren getting real hard experience on RISC-V is going only to help RP to select and audit more seriously any RISC-V design which would make its way in their SOCs.
I just don't want to contribute to arm IP racketering (and we have mpeg and hdmi to take into account too with avX and eDP/DP).
Re: Linux Runs on Raspberry Pi RP2350's Hazard3 RISC-V Cores (2024)
#9I don't even know what would be the point of such device, and if there really is a market for it for tech companies. I would say yes? As a consumer, all I want if a very minimal "phone", with wifi, touch screen, battery, but no 4g or mobile networking, and linux on it. Just the cheapest, smallest, wifi, battery-powered, touchscreen LCD device that could exist that can run executables. People are going to say "but jus…
First, note that what's on that article is not an Raspberry Pi, it's a Raspberry Pi Pico.
I'm not sure about what you want. You don't want a phone, so you want... A tablet, maybe? Or a Raspberry Pi 3/4/5 with a touch screen? Do you want a small screen? Big? Keyboard/Keypad? Touch only?
Re: Linux Runs on Raspberry Pi RP2350's Hazard3 RISC-V Cores (2024)
#10I 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…
The Hazard3 in the Pico 2 are bigger, more capable cores than the Cortex-M0 in the first Pico, and therefore in general faster at the same clock for compiled code.
You're supposed to be able to just recompile most Pico projects to use them as long as there is no ARM assembly in it.
They are only inferior to the ARM Cortex-M33 cores in the Pico 2.