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Build Kernel

Install dependencies

  • on Fedora
$ sudo dnf install autoconf automake curl python3 libmpc-devel mpfr-devel gmp-devel gawk bison flex texinfo gperf libtool patchutils bc openssl dkms libudev-devel golang-bin zlib-devel qemu-user-binfmt  qemu-user-static ncurses-devel expat-devel elfutils-libelf-devel pciutils-devel openssl-devel binutils-devel qemu-system-riscv-core rsync cpio
  • on Ubuntu
$ sudo apt-get install autoconf automake autotools-dev curl python3 libmpc-dev libmpfr-dev libgmp-dev gawk build-essential bison flex texinfo gperf libtool patchutils bc zlib1g-dev libexpat-dev libncurses-dev openssl libiberty-dev libssl-dev dkms libelf-dev libudev-dev libpci-dev golang-go qemu-user-static rsync cpio rpm

Build from source

Download source code

$ git clone
$ git clone

Build Cross toolchain

$ CHIP=mango
$ source bootloader-riscv/scripts/
$ build_rv_gcc
# get the following folders:
├── bootloader-riscv
├── linux-riscv
└── gcc-riscv
├── gcc-riscv64-unknown-elf
└── gcc-riscv64-unknown-linux-gnu

Build kernel

$ build_rv_kernel
  • build debs
$ build_rv_ubuntu_kernel
$ ls install/soc_mango/single_chip/bsp-debs/
linux-headers-6.1.80.deb linux-image-6.1.80.deb linux-libc-dev_6.1.80.deb
  • build rpms
$ build_rv_fedora_kernel
$ ls install/soc_mango/single_chip/bsp-rpms/
kernel-6.1.80.riscv64.rpm kernel-devel-6.1.80.riscv64.rpm kernel-headers-6.1.80.riscv64.rpm

Install kernel

Copy the generated packages to Pioneer.

  • on Ubuntu
$ sudo dpkg -i linux-image-6.1.80.deb
  • on Fedora
$ sudo rpm -ivh --force kernel-6.1.80.riscv64.rpm

Check extlinux.conf

$ cat /boot/extlinux/extlinux.conf
## /boot/extlinux/extlinux.conf

default fedora_sophgo
menu title linuxboot menu
prompt 0
timeout 50

label fedora_sophgo
menu label Fedora Sophgo in SD
linux /vmlinuz-6.1.80
initrd /initramfs-6.1.80.img
append console=ttyS0,115200 root=LABEL=ROOT rootfstype=ext4 rootwait rw earlycon selinux=0 LANG=en_US.UTF-8 nvme_core.io_timeout=600 nvme_core.admin_timeout=600 cma=512M swiotlb=65536

Check build time

After installation and reboot, you can check the build time to see if the new kernel is used.

$ uname -a
Linux fedora-riscv 6.1.80 #1 SMP Tue May 14 08:14:53 UTC 2024 riscv64 GNU/Linux
  • u0076