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 https://github.com/sophgo/bootloader-riscv.git
$ git clone https://github.com/sophgo/linux-riscv.git

Build Cross toolchain

$ CHIP=mango
$ source bootloader-riscv/scripts/envsetup.sh
$ 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