RISC-V
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| Ubuntu provides riscv64 architecture for the RISC-V platform since Focal release. == Images == * Ubuntu 20.04.2 LTS Release Image https://cdimage.ubuntu.com/releases/20.04.2/release/ * Ubuntu Focal (20.04) Dailies https://cdimage.ubuntu.com/ubuntu-server/focal/daily-preinstalled/current/ * Ubuntu Hirsute (21.04) Dailies https://cdimage.ubuntu.com/ubuntu-server/daily-preinstalled/current/ One can boot it on any system with qemu-system, or on bare-metal board such as those built by SiFive. == Forums == You can discuss Ubuntu on RISC-V over at the [[https://discourse.ubuntu.com/c/server/17|Ubuntu Server forums]]. == Booting with qemu == Prerequisites: * apt install qemu-system-misc opensbi u-boot-qemu qemu-utils After installing the above prerequisites, one can use any of the above images to boot virtua> First unpack the image {{{ xz -dk focal-preinstalled-server-riscv64.img.xz }}} Optionally, if you want larger disk, you can expand the disk (filesystem will be automatical> {{{ qemu-img resize -f raw focal-preinstalled-server-riscv64.img +5G }}} Next use OpenSBI bootloader & u-boot-qemu to boot the virtual machine Working example with all the options is: {{{ qemu-system-riscv64 \ -machine virt -nographic -m 2048 -smp 4 \ -bios /usr/lib/riscv64-linux-gnu/opensbi/generic/fw_jump.elf \ -kernel /usr/lib/u-boot/qemu-riscv64_smode/uboot.elf \ -device virtio-net-device,netdev=eth0 -netdev user,id=eth0 \ -drive file=focal-preinstalled-server-riscv64.img,format=raw,if=virtio }}} The important options to use are: * Machine type `virt` aka `-machine virt` * Bios is OpenSBI `-bios /usr/lib/riscv64-linux-gnu/opensbi/generic/fw_jump.elf` * "kernel" is qemu smode uboot `-kernel /usr/lib/u-boot/qemu-riscv64_smode/uboot.elf` One can use pass through networking, adjust memory (`-m`) & cpu counts (`-smp`) as needed. Switch to the serial console, wait for cloud-init to complete, then login using `ubuntu:ubuntu`. See the cloud-init section below to further customise the first boot behaviour with cloud-init. == Booting on SiFive HiFive Unleashed board == The above image has U-Boot SPL loader as well as SiFive U-Boot to boot on the board. Set jumpers to boot from the microSD by setting `MSEL=1011` (MSEL2 to the outside of the board, the rest to the inside). You can then use "Gnome Disks" app to restore `img.xz` image onto the microSD card, plug it into the board and boot. You can also use cmdline to extract the image and dd it. {{{ xz -dk focal-preinstalled-server-riscv64.img.xz dd if=focal-preinstalled-server-riscv64.img of=/dev/disk/by-id/<TAB><TAB>complete-to-sdcard-device }}} Monitor serial console, wait for cloud-init to complete, then login using `ubuntu:ubuntu`. See the cloud-init section below to further customise the first boot behaviour with cloud-init. == cloud-init integration == The image has a fallback cloud-init datasource that configures sudo user `ubuntu` with password `ubuntu` and DHCP networking. You will be asked to change the password on first login. The image has `CIDATA` partition which can be used as a valid datasource to adjust cloud-config metadata. If you wish to customize user password, networking information, add ssh keys, etc. Please mount `CIDATA` partition rename `meta-data` and `user-data` files and adjust them to taste. You can use network-info to configure networking if something more sophisticated than just DHCP is desired. For example ssh keys, disabling interactive login, and so on. See https://cloudinit.readthedocs.io/en/latest |
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RISC-V (last edited 2025-02-07 13:36:10 by adrianoco)