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1 Build u-boot and kernel

1.1 Kernel and u-boot versions

Operating System Kernel Version U-boot version Cross-compiler Partition type Packaging Tool Kernel branch Kernel configuration U-boot branch U-boot configuration
buildroot linux v5.10.y u-boot
v2017.09 		11.3-aarch64 GPT sd-fuse nanopi5-v5.10.y_opt nanopi6_linux_defconfig nanopi6-v2017.09 rk3588_defconfig
ubuntu-jammy-desktop-arm64
ubuntu-jammy-minimal-arm64
friendlycore-focal-arm64
debian-bullseye-core-arm64
debian-bullseye-desktop-arm64
debian-bullseye-minimal-arm64
debian-buster-desktop-arm64
friendlywrt21 nanopi6_linux_defconfig
friendlywrt.config
friendlywrt21-docker
friendlywrt22
friendlywrt22-docker 
export PATH=/opt/FriendlyARM/toolchain/11.3-aarch64/bin/:$PATH
  • The sd-fuse is a helper script to make bootable SD card image.

1.2 Build kernel linux-v5.10.y

Clone the repository to your local drive then build: 

git clone https://github.com/friendlyarm/kernel-rockchip --single-branch --depth 1 -b nanopi5-v5.10.y_opt kernel-rockchip
cd kernel-rockchip
export PATH=/opt/FriendlyARM/toolchain/11.3-aarch64/bin/:$PATH
touch .scmversion
# Configuring the Kernel
# Load default configuration
make CROSS_COMPILE=aarch64-linux-gnu- ARCH=arm64 nanopi6_linux_defconfig
# Optionally, load configuration for FriendlyWrt
# make CROSS_COMPILE=aarch64-linux-gnu- ARCH=arm64 nanopi6_linux_defconfig friendlywrt.config
# Optionally, if you want to change the default kernel config
# make CROSS_COMPILE=aarch64-linux-gnu- ARCH=arm64 menuconfig
# Start building kernel
make CROSS_COMPILE=aarch64-linux-gnu- ARCH=arm64 nanopi6-images -j$(nproc)
# Start building kernel modules
mkdir -p out-modules && rm -rf out-modules/*
make CROSS_COMPILE=aarch64-linux-gnu- ARCH=arm64 INSTALL_MOD_PATH="$PWD/out-modules" modules -j$(nproc)
make CROSS_COMPILE=aarch64-linux-gnu- ARCH=arm64 INSTALL_MOD_PATH="$PWD/out-modules" modules_install
KERNEL_VER=$(make CROSS_COMPILE=aarch64-linux-gnu- ARCH=arm64 kernelrelease)
[ ! -f "$PWD/out-modules/lib/modules/${KERNEL_VER}/modules.dep" ] && depmod -b $PWD/out-modules -E Module.symvers -F System.map -w ${KERNEL_VER}
(cd $PWD/out-modules && find . -name \*.ko | xargs aarch64-linux-strip --strip-unneeded)

The generated files:

kernel.img resource.img boot.img This img is deprecated The kernel modules are located in the out-modules directory

Apply kernel:
Please click on #Apply u-boot and the kernel

1.3 Compile u-boot v2017.09

Clone the repository to your local drive then build: 

git clone https://github.com/friendlyarm/rkbin --single-branch --depth 1 -b nanopi6
git clone https://github.com/friendlyarm/uboot-rockchip --single-branch --depth 1 -b nanopi6-v2017.09
export PATH=/opt/FriendlyARM/toolchain/11.3-aarch64/bin/:$PATH
cd uboot-rockchip/
./make.sh nanopi6

After the compilation, the following files will be generated:

uboot.img rk3588_spl_loader_v1.08.111.bin (aka MiniLoaderAll.bin)

Apply u-boot:
Please click on #Apply u-boot and the kernel

1.4 Apply u-boot and the kernel

1.4.1 Install to target board

Since the rk3588's OS uses GPT partitions by default, you can use the dd command to write the image file to the partition, the device nodes for SD card and eMMC are shown below:

  • The SD/TF Card device node: /dev/mmcblk0
  • The eMMC device node: /dev/mmcblk2


Use the 'parted' command to view the partition layout: 

parted /dev/mmcblk2 print

Sample outputs: 

Model: MMC A3A551 (sd/mmc)
Disk /dev/mmcblk2: 31.0GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:
 
Number  Start   End     Size    File system  Name      Flags
 1      8389kB  12.6MB  4194kB               uboot
 2      12.6MB  16.8MB  4194kB               misc
 3      16.8MB  21.0MB  4194kB               dtbo
 4      21.0MB  37.7MB  16.8MB               resource
 5      37.7MB  79.7MB  41.9MB               kernel
 6      79.7MB  113MB   33.6MB               boot
 7      113MB   147MB   33.6MB               recovery
 8      147MB   31.0GB  30.9GB  ext4         rootfs

as shown above, the resource partition is located at 4 and the kernel partition is located at 5. Use the dd command to write the resource.img and kernel.img files to these partitions, the commands are as follows: 

dd if=resource.img of=/dev/mmcblk2p4 bs=1M
dd if=kernel.img of=/dev/mmcblk2p5 bs=1M

If you want to update u-boot: 

dd if=boot.img of=/dev/mmcblk2p1 bs=1M

To update new driver modules, copy the newly compiled driver modules to the appropriate directory under /lib/modules.

1.4.2 Packaging and creating an SD image

To create a new OS image file, you need to use the "sd-fuse" packaging tool.

"sd-fuse" is a collection of scripts that can be used to create bootable SD card images for FriendlyElec boards. Its main features include:

  • Creation of root filesystem images from a directory
  • Building of bootable SD card images
  • Simple compilation of kernel, U-Boot, and third-party drivers

Please click on the following link to find out more:

Kernel version Packaging Tool
linux v5.10.y sd-fuse_rk3588
1.4.3 USB flashing
1.4.3.1 Linux

To flash U-Boot and kernel using the "upgrade_tool" tool, please use the following command: 

sudo upgrade_tool ul MiniLoaderAll.bin
sudo upgrade_tool di -p parameter.txt
sudo upgrade_tool di uboot uboot.img
sudo upgrade_tool di resource resource.img
sudo upgrade_tool di kernel kernel.img
sudo upgrade_tool RD

Note: "upgrade_tool" is a command-line tool provided by Rockchip for Linux operating systems (Linux_Upgrade_Tool).

2 Compile Android

2.1 Download android source code from the netdrive

Netdisk URL: Click here
File location on netdisk："07_Source codes/rk35xx-android12-xxxxxxx-YYYYMMDD.tgz" (YYYYMMDD represents the date of the package, and xxxxxxx represents the final commit-id)
Unzip and fetch updates: 

tar xzf '/path/to/netdisk/07_Source codes/rk35xx-android12-xxxxxxx-YYYYMMDD.tgz'
cd rk35xx-android12
git pull

2.2 Compile Android Table

echo "ROCKCHIP_DEVICE_DIR := device/rockchip/rk3588/nanopi6" > .rockchip_device.mk
# export INSTALL_GAPPS_FOR_TESTING=yes  # include google apps
. setenv.sh
./build.sh -FMu

2.3 Compile Android TV

echo "ROCKCHIP_DEVICE_DIR := device/rockchip/rk3588/nanopi6_box" > .rockchip_device.mk
# export INSTALL_GAPPS_FOR_TESTING=yes  # include google apps
. setenv.sh
./build.sh -FMu

2.4 Installing Android

After the Android compilation is completed, the image file will be stored in the rockdev/Image-aosp_nanopi3 subdirectory of the Android source code directory.

2.4.1 USB Flashing

Use the rockchip tool to flash the following file: rockdev/Image-aosp_nanopi3/update.img

2.4.2 SD-to-eMMC Flash

Refer to the following steps：
1) Insert the SD card of the eflasher system into the host;
2) Copy the files in the rockdev/Image-aosp_nanopi3 directory to the android12 or androidtv directory in the FRIENDLYARM partition of the SD card: 

sudo cp -af parameter.txt config.cfg MiniLoaderAll.bin uboot.img \
    dtbo.img vbmeta.img boot.img recovery.img \
    misc.img pcba_small_misc.img pcba_whole_misc.img \
    baseparameter.img super.img /media/$USER/FriendlyARM/android12

3) Insert the SD card into {{{1}}} and re-flash;

2.5 Pack the new SD Image

git clone https://github.com/friendlyarm/sd-fuse_rk3588.git
SDFUSE=$PWD/sd-fuse_rk3588
mkdir $SDFUSE/android12
 
cd /path/to/rk35xx-android12/rockdev/Image-aosp_nanopi3
cp -af parameter.txt config.cfg MiniLoaderAll.bin uboot.img \
    dtbo.img vbmeta.img boot.img recovery.img \
    misc.img pcba_small_misc.img pcba_whole_misc.img \
    baseparameter.img super.img $SDFUSE/android12
 
cd $SDFUSE/
./mk-sd-image.sh android12
 
tar xvzf /path/to/netdrive/03_Partition\ image\ files/emmc-flasher-images.tgz
./mk-emmc-image.sh android12

For more information, please refer to #Packaging and creating an SD image

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