Build Ubuntu Firmware

Preparations

Run these two commands to install necessary tools

   sudo apt update

   sudo apt install repo git ssh make gcc libssl-dev liblz4-tool \
   expect g++ patchelf chrpath gawk texinfo chrpath diffstat binfmt-support \
   qemu-user-static live-build bison flex fakeroot cmake gcc-multilib g++-multilib \
   unzip device-tree-compiler ncurses-dev p7zip-full

Download rootfs here

Ubuntu rootfs

, in general, choose the filesystem with latest date.

After download, decompress and move the rootfs image to
SDK/prebuilt_rootfs/, then create a symbolic link.

   # Decompress
   7z x Ubuntu22.04-xxxx.7z

   mv Ubuntu22.04-xxxx.img ./rk3576_sdk/prebuilt_rootfs/
   cd ./rk3576_sdk/prebuilt_rootfs/
   ln -sf Ubuntu22.04-xxxx.img rk3576_ubuntu_rootfs.img
   cd ..

Configurations

Run "./build.sh lunch" to list all available configs, enter a number
to select. Please choose one with "ubuntu" keyword:

   ./build.sh lunch

   ############### Rockchip Linux SDK ###############

   Manifest: rk3576_linux_release_20250520_v1.0.1f.xml

   Log colors: message notice warning error fatal

   Log saved at /home2/liuth/project/linux/rk3576/output/sessions/2025-08-06_15-27-20
   Pick a defconfig:

   1. rockchip_defconfig
   2. firefly_rk3576_aio-3576c_buildroot_defconfig
   3. firefly_rk3576_aio-3576c_debian_defconfig
   4. firefly_rk3576_aio-3576c_ubuntu_defconfig
   5. firefly_rk3576_aio-3576jd4_buildroot_defconfig
   6. firefly_rk3576_aio-3576jd4_debian_defconfig
   7. firefly_rk3576_aio-3576jd4_ubuntu_defconfig
   ......
   ......
   24. firefly_rk3576_roc-rk3576-pc_buildroot_defconfig
   25. firefly_rk3576_roc-rk3576-pc_debian_defconfig
   26. firefly_rk3576_roc-rk3576-pc_ubuntu_defconfig
   27. rockchip_rk3576_evb1_v10_defconfig
   28. rockchip_rk3576_industry_evb_v10_defconfig
   29. rockchip_rk3576_iotest_v10_defconfig
   30. rockchip_rk3576_ipc_evb1_v10_defconfig
   31. rockchip_rk3576_multi_ipc_evb1_v10_defconfig
   32. rockchip_rk3576_test1_v10_defconfig
   33. rockchip_rk3576_test2_v10_defconfig
   34. rockchip_rk3576_vehicle_evb_v10_defconfig
   35. rockchip_rk3576_vehicle_evb_v20_mos_defconfig
   Which would you like? [1]:

Compilation

Full Compilation

Run

   ./build.sh all

The output firmware will be "output/update/update.img"

Partial Compilation

After a full compilation, if you modified kernel or uboot, you can do
partial compilation to save time.

Only build u-boot, will generate u-boot/uboot.img

   ./build.sh uboot

Only build kernel, will generate kernel/extboot.img

   ./build.sh extboot

Pack all parts to update.img

   ./build.sh updateimg