Linux System Customization

Applicability

If a larger rootfs partition is needed, other partitions must be deleted to free up space, such as the userdata partition space.

fdisk -l /dev/mmcblk0

../_images/ubuntu_custom_rootfs_1.png

umount /userdata
umount /oem

fdisk /dev/mmcblk0

../_images/ubuntu_custom_rootfs_2.png

Enter the ‘wq’ command to delete the partition

../_images/ubuntu_custom_rootfs_3.png

parted /dev/mmcblk0

../_images/ubuntu_custom_rootfs_4.png

Parted partition

../_images/ubuntu_custom_rootfs_5.png

15G corresponds to 29360128 sectors

Adjusting the size of rootfs

../_images/ubuntu_custom_rootfs_6.png

Exit

../_images/ubuntu_custom_rootfs_7.png

resize2fs /dev/mmcblk0p6

../_images/ubuntu_custom_rootfs_8.png

rootfs adjustment completed

First, clear the cache generated by previous buildroot compilations (note: clearing the cache will result in longer compilation times), as follows:

../_images/ubuntu_custom_buildroot_systemd1.png

Select the Neardi development board configuration, as follows choose BoardConfig-rk3588-neardi-linux-lc160.mk

../_images/ubuntu_custom_buildroot_systemd2.png

Enter the buildroot directory (cd buildroot)， execute the ARCH=arm64 make menuconfigcommand, inToolChain–>select glibc，as follows:

../_images/ubuntu_custom_buildroot_systemd3.png

Then select System Configuration->Init system->systemd， as follows:

../_images/ubuntu_custom_buildroot_systemd4.png

Afterward, save and exit.

ARCH=arm64 make savedefconfig

../_images/ubuntu_custom_buildroot_systemd5.png

The above image shows systemd saved to the SDK configuration file: buildroot/configs/rockchip_rk3588_defconfig

./build.sh

After successful compilation, the following files are generated:

../_images/ubuntu_custom_buildroot_systemd6.png

Use the rockchip download tool to burn the ‘update.img’ to the development board.

../_images/ubuntu_custom_buildroot_systemd7.png

The above image shows systemd running successfully.