[OpenWrt-Devel] OpenWrt on RISC-V

[Alex Guo]

Hi Zoltan,

Nice work.

I'm also trying 4.19 kernel in microsemi pcie board with some wifi card
recently, I will try your port on that borad.

Best,

Alex

On 11/3/18 10:50 AM, Zoltan HERPAI wrote:
> Hi all,
>
> I'm happy to announce a port of RISC-V for OpenWrt. For those who
> haven't heard about it, RISC-V is a new CPU architecture coming from
> Berkeley, and is a free, open, extensible ISA, maintained by a
> non-profit foundation, included in the Linux kernel since 4.15.
>
> Current status is:
> - based on 4.19 - pull requests and patches for trunk will be sent
> once support for 4.19 is merged into mainline and core package changes
> are worked out. Until then, the port is in a staging tree [1]
> - mainline musl support is expected for musl 1.21, patches are
> included in the tree [2] for the current 1.20 for testing
> - currently builds with glibc as default
> - OpenWrt packages are built regularly on an external buildbot
> - documentation is added to the wiki [3]
>
> Currently you have three ways to run RISC-V:
> - Virtex7-based FPGA implementation of the core (most expensive)
> - HiFive Unleashed (official Linux devboard, less expensive) [4]
> - QEMU (free, support for riscv merged into qemu-2.12) [5]
>
> The target supports the last two. There are further development boards
> expected in the next few months. For further reading on the
> architecture and its state, please refer to this site [6].
>
> The staging tree includes various fixes for the core package changes
> appeared with 4.19. Given the state of 4.19 currently, please consider
> this an experimental port - you won't be able to run quake on it yet,
> sorry. [7]
>
> [1]
> https://git.openwrt.org/?p=openwrt/staging/wigyori.git;a=shortlog;h=refs/heads/riscv-201810
> [2]
> https://git.openwrt.org/?p=openwrt/staging/wigyori.git;a=commit;h=f5fe060b9ccc7d64d3b1764852b6e2b9273d5cad
> [3] https://openwrt.org/docs/techref/hardware/soc/soc.sifive
> [4] https://openwrt.org/toh/hifive/unleashed
> [5]
> https://openwrt.org/docs/guide-user/virtualization/qemu#openwrt_in_qemu_risc-v
> [6] https://riscv.org/
> [7] https://archive.fosdem.org/2018/schedule/event/riscv/
>
> Regards,
> Zoltan Herpai
>
>
>
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