duo制作ubuntu文件系统
在Ubuntu 22.04 LTS下执行：
首先在内核编译中添加以下选项
# We need to enable a few modules in the kernel configuration before we can continue, so: nano ~/duo-buildroot-sdk/build/boards/cv180x/cv1800b_milkv_duo_sd/linux/cvitek_cv1800b_milkv_duo_sd_defconfig # and add at the end: CONFIG_CGROUPS=y CONFIG_CGROUP_FREEZER=y CONFIG_CGROUP_PIDS=y CONFIG_CGROUP_DEVICE=y CONFIG_CPUSETS=y CONFIG_PROC_PID_CPUSET=y CONFIG_CGROUP_CPUACCT=y CONFIG_PAGE_COUNTER=y CONFIG_MEMCG=y CONFIG_CGROUP_SCHED=y CONFIG_NAMESPACES=y CONFIG_OVERLAY_FS=y CONFIG_AUTOFS4_FS=y CONFIG_SIGNALFD=y CONFIG_TIMERFD=y CONFIG_EPOLL=y CONFIG_IPV6=y CONFIG_FANOTIFY # optional (enable zram): CONFIG_ZSMALLOC=y CONFIG_ZRAM=y
重要提示:要减少ram的使用可以关掉duo的保留内存空间
创建rootfs
# install prerequisites sudo apt install debootstrap qemu qemu-user-static binfmt-support dpkg-cross --no-install-recommends # generate minimal bootstrap rootfs sudo debootstrap --arch=riscv64 --foreign jammy ./temp-rootfs http://ports.ubuntu.com/ubuntu-ports # chroot into the rootfs we just created sudo chroot temp-rootfs /bin/bash # run 2nd stage of deboostrap /debootstrap/debootstrap --second-stage # add package sources cat >/etc/apt/sources.list <<EOF deb http://ports.ubuntu.com/ubuntu-ports jammy main restricted deb http://ports.ubuntu.com/ubuntu-ports jammy-updates main restricted deb http://ports.ubuntu.com/ubuntu-ports jammy universe deb http://ports.ubuntu.com/ubuntu-ports jammy-updates universe deb http://ports.ubuntu.com/ubuntu-ports jammy multiverse deb http://ports.ubuntu.com/ubuntu-ports jammy-updates multiverse deb http://ports.ubuntu.com/ubuntu-ports jammy-backports main restricted universe multiverse deb http://ports.ubuntu.com/ubuntu-ports jammy-security main restricted deb http://ports.ubuntu.com/ubuntu-ports jammy-security universe deb http://ports.ubuntu.com/ubuntu-ports jammy-security multiverse EOF # update and install some packages apt-get update apt-get install --no-install-recommends -y util-linux haveged openssh-server systemd kmod initramfs-tools conntrack ebtables ethtool iproute2 iptables mount socat ifupdown iputils-ping vim dhcpcd5 neofetch sudo chrony # optional for zram apt-get install zram-config systemctl enable zram-config # Create base config files mkdir -p /etc/network cat >>/etc/network/interfaces <<EOF auto lo iface lo inet loopback auto eth0 iface eth0 inet dhcp EOF cat >/etc/resolv.conf <<EOF nameserver 1.1.1.1 nameserver 8.8.8.8 EOF # write text to fstab (this is with swap enabled if you want to disable it just put a # before the swap line) cat >/etc/fstab <<EOF # <file system> <mount pt> <type> <options> <dump> <pass> /dev/root / ext2 rw,noauto 0 1 proc /proc proc defaults 0 0 devpts /dev/pts devpts defaults,gid=5,mode=620,ptmxmode=0666 0 0 tmpfs /dev/shm tmpfs mode=0777 0 0 tmpfs /tmp tmpfs mode=1777 0 0 tmpfs /run tmpfs mode=0755,nosuid,nodev,size=64M 0 0 sysfs /sys sysfs defaults 0 0 /dev/mmcblk0p3 none swap sw 0 0 EOF # set hostname echo "milkvduo-ubuntu" > /etc/hostname # set root passwd echo "root:riscv" | chpasswd # enable root login through ssh sed -i "s/#PermitRootLogin.*/PermitRootLogin yes/g" /etc/ssh/sshd_config # exit chroot exit sudo tar -cSf Ubuntu-jammy-rootfs.tar -C temp-rootfs . gzip Ubuntu-jammy-rootfs.tar rm -rf temp-rootfs
然后先把官方的镜像写入到sd卡然后替换内核的文件系统
dd if=milkv-duo.img of=/dev/sdX status=progress #replace X with your device name
我们挂载rootfs分区，并用bash sudo rm -r /media/yourusername/rootfs然后创建一个目录mkdir ubunturootfs提取我们的Ubuntu-jammy-rootfs.tar
tar -xf Ubuntu-jammy-rootfs.tar -C ubunturootfs
现在，我们将rootfs复制到我们挂载的分区:
sudo cp -r ubunturootfs/* /media/yournamehere/rootfs/
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