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Computer scientist showcases world's first RISC-V-based Linux PC coupled with an AMD RX 6700 XT GPU

Double milestone for the RISC-V community, (Image Source: René Rebe)
Double milestone for the RISC-V community, (Image Source: René Rebe)
René Rebe managed to patch the Linux kernel to support the RISC-V processor along with the AMD RX 6700 XT card in around 10 hours. The GPU is not exactly fully functional, as it cannot yet run games, but it can render the GUI, 3D elements and also decode hi-res videos.
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Back when Nvidia was announcing the intentions to buy ARM and many industry analysts immediately expressed their concern regarding the status of the ARM architecture that might become harder to license, SiFive came out with a big push for its RISC-V CPU architecture as a true open source alternative. Similar to the Windows-on-ARM initiative, SiFive promised to deliver a general use PC platform that would allow software developers to adapt the Windows and Linux-based code for the RISC-V processors. It only took SiFive a few months to launch its first PC motherboard called the HiFive Unmatched, which is based on the U7 SoC. However, since the RISC-V community is not that big, development on the PC platform is not exactly fast. Interestingly enough, Nvidia recently managed to enable RTX 3000 support for ARM-based laptops, and, almost at the same time, a RISC-V enthusiast managed to make an AMD RX 6700 XT work on Linux-based HiFive Unmatched system.

This is essentially a double milestone for the RISC-V community. Hackster.io reports that computer scientist René Rebe first managed to make the HiFive Unmatched run Linux, and then added support for the Radeon RX 6700 XT GPU through the Mesa Gallium 21.1.5 driver. Apparently, the U7 SoC is not properly supported in Linux, but Rebe was able to work his magic and patched the Linux kernel to support both the RISC-V architecture and the RDNA2 GPU in around 10 hours. The GPU is not fully functional as of yet. It can display the GUI, can render 3D graphics in accelerated-mode and also decode hi-res videos, but cannot run games. Nevertheless, this is still an impressive achievement that is not facilitated by the SiFive team itself.

With a bit more work, RISC-V can become a serious alternative for the ARM and even the X64 architectures. The HiFIve Unmatched already offers support for most of the popular PC interfaces like PCIe 3.0, M.2 and USB, so it all comes down to the CPU-specific coding advancements in order to enable broader compatibility with Linux and eventually Windows.

 

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Bogdan Solca
Bogdan Solca - Senior Tech Writer - 1575 articles published on Notebookcheck since 2017
I first stepped into the wondrous IT&C world when I was around seven years old. I was instantly fascinated by computerized graphics, whether they were from games or 3D applications like 3D Max. I'm also an avid reader of science fiction, an astrophysics aficionado, and a crypto geek. I started writing PC-related articles for Softpedia and a few blogs back in 2006. I joined the Notebookcheck team in the summer of 2017 and am currently a senior tech writer mostly covering processor, GPU, and laptop news.
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> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2021 07 > Computer scientist showcases world's first RISC-V-based Linux PC coupled with an AMD RX 6700 XT GPU
Bogdan Solca, 2021-07-24 (Update: 2021-07-24)