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howto_setup_rvv.md

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RISC-V "V" (Vector) extension runner

There is one known vendor OS which goes with RVV 0.7.1 ISA out of the box. Download it from Mega: 20211230_LicheeRV_debian_d1_hdmi_8723ds.7z. Below are steps required for OS setup:

Setup OS

  1. Build OpenixCard:

    git clone --recursive --depth 1 https://github.com/YuzukiTsuru/OpenixCard
sudo apt install cmake build-essential automake autoconf libconfuse-dev pkg-config
cd OpenixCard
mkdir build
cd build
cmake .. && make -j

  2. Unpack image

    7z e 20211230_LicheeRV_debian_d1_hdmi_8723ds.7z
cd OpenixCard/build
./dist/OpenixCard -d ../../20211230_LicheeRV_debian_d1_hdmi_8723ds.img

  3. Flash 20211230_LicheeRV_debian_d1_hdmi_8723ds.img.dump.out/20211230_LicheeRV_debian_d1_hdmi_8723ds.img using Rufus of BalenaEtcher to SD card (tested on 64GB SanDisk Ultra)

  4. Login by login:sipeed and password:licheepi

  5. Connect to WiFi by GUI through Preferences -> Connman Settings. Observed OS hangs at "Assotiation" step but after several tries with board restart it finnaly works. Wired Internet by USB adapter not working.

  6. Check vector extension "v":

    cat /proc/cpuinfo
processor       : 0
hart            : 0
isa             : rv64imafdcvu
mmu             : sv39

  7. Update apt sources file /etc/apt/sources.list:

    deb http://deb.debian.org/debian sid main

  8. Fix kernel panic: https://wiki.sipeed.com/hardware/en/lichee/RV/user.html#Notes-about-Debian

  9. Resize filesystem to SD card (tested on 64GB):

    $ df -h /
Filesystem      Size  Used Avail Use% Mounted on
/dev/root       3.6G  2.8G  636M  82% /

$ sudo fdisk -l
The backup GPT table is not on the end of the device.
Disk /dev/mmcblk0: 59.48 GiB, 63864569856 bytes, 124735488 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 189CD837-ED7A-4651-8372-D86D46652AEC

Device         Start      End  Sectors  Size Type
/dev/mmcblk0p1 34336    42399     8064  3.9M Linux filesystem
/dev/mmcblk0p2 42400    42903      504  252K Linux filesystem
/dev/mmcblk0p3 42904    43407      504  252K Linux filesystem
/dev/mmcblk0p4 43408    65543    22136 10.8M Linux filesystem
/dev/mmcblk0p5 65544    66551     1008  504K Linux filesystem
/dev/mmcblk0p6 66552    94775    28224 13.8M Linux filesystem
/dev/mmcblk0p7 94776 16871991 16777216    8G Linux filesystem

$ sudo fdisk /dev/mmcblk0
Command (m for help): d
Partition number (1-7, default 7): 7
Command (m for help): n
Partition number (7-128, default 7): 7
First sector (94776-124735454, default 96256): 94776
Last sector, +/-sectors or +/-size{K,M,G,T,P} (94776-124735454, default 124735454): 124735454

Created a new partition 7 of type 'Linux filesystem' and of size 59.4 GiB.
Partition #7 contains a ext4 signature.

Do you want to remove the signature? [Y]es/[N]o: y
Command (m for help): w

$ sudo reboot
$ sudo resize2fs /dev/mmcblk0p7
$ df -h /
Filesystem      Size  Used Avail Use% Mounted on
/dev/root        59G  2.8G   54G   5% /

Runner setup

  • Because of fence.tso Illegal Instruction (hardware bug) use .NET build compiled with GCC from https://github.com/dkurt/dotnet_riscv/releases

  • Update glibc before usage:

    sudo apt-get update
sudo apt-get install -y libc6 libstdc++6