CM3588

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Contents

1 Introduction

Front
Back
Carrier Board Front
Carrier Board Back
  • The CM3588 and is a high performance ARM module designed and developed by FriendlyElec. It is based on Rockchip’s RK3588 SoC. The regular version has 4/8/16GB LPDDR4x or 32GB LPDDR5 RAM, 32GB/64GB/256GB eMMC Flash(optional), The CM3588 have four 100-pin connectors, exposing nearly all IO resources.
  • The CM3588 computing module boasts a variety of peripherals and expansion interfaces. It can connect to a carrier borad supporting 4 NVMe high-speed solid-state drives with read/write speeds of up to 1GB/s. Additionally, it includes dual HDMI-Out display interfaces, 1 HDMI-In interface, 2 USB3.0 ports, 1 USB2.0 port, a 2.5G Ethernet interface, and more.
  • The carrier borad (CM3588 NAS Kit) have 2 HDMI output interfaces and 1 HDMI In interface can decode and play videos in formats such as up to 8K60p H.265/VP9 and 8K30p H.264, with the ability to record 4K60p H.265 videos.
  • The CM3588 offers the OpenMediaVault NAS system and supports various operating systems including Android, Ubuntu, Debian, Buildroot, and OpenWrt. It has well established software support. It is a perfect platform for startups to develop applications and prototypes in facial detection, machine vision, VR, autonomous-driving, deep learning, AI and etc.

2 Hardware Spec

  • SoC: Rockchip RK3588
    • CPU: Quad-core ARM Cortex-A76(up to 2.4GHz) and quad-core Cortex-A55 CPU (up to 1.8GHz)
    • GPU: Mali-G610 MP4, compatible with OpenGLES 1.1, 2.0, and 3.2, OpenCL up to 2.2 and Vulkan1.2
    • VPU: 8K@60fps H.265 and VP9 decoder, 8K@30fps H.264 decoder, 4K@60fps AV1 decoder, 8K@30fps H.264 and H.265 encoder
    • NPU: 6TOPs, supports INT4/INT8/INT16/FP16
  • RAM: 64-bit 4GB/8GB/16GB LPDDR4X up to 2133MHz, 32GB LPDDR5 up to 2400MHz
  • Flash: 0GB/64GB/256GB eMMC, at HS400 mode
  • 1 x microSD interface, support up to SDR104 mode
  • 1 x On-board PCIe 2.5G ethernet controller (RTL8125B)
  • USB:
    • 2 x USB 3.1 Gen1 OTG which combo with DP display（up to 4Kp60）
    • 1 x USB 3.1 Gen1 Host
    • 2 x USB 2.0 Host
  • PCIe:
    • up to 4 x PCIe interfaces
      • 2 x PCIe 2.1 x1 and 2 x PCIe 3.0 x2
      • or 2 x PCIe 2.1 x1 and 1 x PCIe 3.0 x4
      • or 1 x PCIe 2.1 x1, 1 x PCIe 3.0 x2, and 2 x PCIe 3.0 x1
      • or 4 x PCIe 3.0 x1
  • HDMI output:
    • 2 x HDMI outputs which is compatible with HDMI2.1, HDMI2.0, and HDMI1.4 operation
    • one support displays up to 7680x4320@60Hz, another one support up to 4Kp60
    • Support RGB/YUV(up to 10bit) format
  • HDMI input: 1 x HDMI input, up to 4Kp60
  • MIPI RX:
    • 2 x 4lane MIPI DPHY CSI RX which support x4 mode or x2+x2 mode ,compatible with MIPI V1.2
    • 2 x 4lane MIPI_D/CPHY_RX
  • MIPI TX:
    • 2 x 4-lane MIPI D-PHY/C-PHY Combo PHY TX, compatible with MIPI DPHY 2.0 or CPHY 1.1
  • Codec:
    • On-board ALC5616 Codec
    • 1 x stereo headphone output ( 20mW/CH, THD+N <= -80dB, 16Ohm Load )
    • 1 x single-end microphone input
  • GPIO:
    • up to 3 x SPIs, 7 x UARTs, 6 x I2Cs, 15 x PWMs, 3 x I2Ss, 1 x SDIO, 81 x GPIOs
  • others:
    • low power RTC (HYM8563TS) with backup battery input
    • Support 38Khz IR input
    • MASK button for eMMC update, reset button, Power button, and recovery mode button
    • Debug UART,3.3V level, 1500000bps
    • 2 x GPIO Controlled LED (SYS, LED1)
  • Power supply: 5~20VDC input, 20W max
  • PCB: 8 Layers, CM3588 is 55x65x1.6mm, CM3588 Plus is 55x67.5x1.6mm.
  • Stacking height: 6.6mm
  • Connector: 4 x DF40C-100DP-0.4V(51), the mating connector is DF40HC(3.0)-100DS-0.4V(51)
  • Ambient Operating Temperature: 0℃ to 70℃

3 Diagram, Layout and Dimension

3.1 CM3588

CM3588 CPU board layout-L.jpg

3.2 CM3588 Plus

CM3588 Plus CPU board layout-L.jpg

3.3 Carrier Board

CM3588 NAS SDK Carrier board layout.jpg

4 Get Started

4.1 Essentials You Need

Before starting to use your CM3588 get the following items ready

4.2 TF Cards We Tested

Refer to： TFCardsWeTested

4.3 Configure parameters for serial port

Use the following serial parameters:

Baud rate 1500000
Data bit 8
Parity check None
Stop bit 1
Flow control None

4.4 Install OS

4.4.1 Downloads

4.4.1.1 Official image

Visit download link to download official image files (in the "01_Official images" directory).
The table below lists all official images, the word 'XYZ' in image filename meaning:

  • sd: Use it when you need to boot the entire OS from the SD card
  • eflasher: Use it when you need to flash the OS to eMMC via TF card
  • usb: Use it when you need to flash the OS to eMMC via USB
Icon Image Filename Version Description Kernel Version
Debian-icon.svg rk3588-XYZ-debian-bookworm-core-6.1-arm64-YYYYMMDD.img.gz bookworm Debian 12 Core, command line only 6.1.y
Debian-icon.svg rk3588-XYZ-debian-bullseye-minimal-6.1-arm64-YYYYMMDD.img.gz bullseye Debian 11 Desktop, Xfce desktop, no pre-installed recommended software, supports HW acceleration 6.1.y
Debian-icon.svg rk3588-XYZ-debian-bullseye-desktop-6.1-arm64-YYYYMMDD.img.gz bullseye Debian 11 Desktop, Xfce desktop, pre-installed mpv, smplayer and chromium brower, supports HW acceleration 6.1.y
Ubuntu-icon.svg rk3588-XYZ-ubuntu-focal-desktop-6.1-arm64-YYYYMMDD.img.gz focal Ubuntu 20.04 Desktop, LXQT desktop, pre-installed mpv, smplayer and chromium brower, supports HW acceleration 6.1.y
Ubuntu-icon.svg rk3588-XYZ-ubuntu-noble-desktop-6.1-arm64-YYYYMMDD.img.gz noble Ubuntu 24.04 with GNOME and Wayland with recommended software 6.1.y
Ubuntu-icon.svg rk3588-XYZ-ubuntu-noble-minimal-6.1-arm64-YYYYMMDD.img.gz noble Lightweight Ubuntu 24.04 with GNOME and Wayland 6.1.y
Ubuntu-icon.svg rk3588-XYZ-ubuntu-jammy-x11-desktop-arm64-YYYYMMDD.img.gz jammy Ubuntu 22.04 with Xubuntu and X11, use Panfrost GPU driver 6.1.y
Ubuntu-icon.svg rk3588-XYZ-friendlycore-focal-6.1-arm64-YYYYMMDD.img.gz focal FriendlyCore，command line only, pre-installed Qt5， based on Ubuntu core 20.04 6.1.y
Android-icon.svg rk3588-XYZ-androidtv-YYYYMMDD.img.zip 12 Android 12 TV 5.10.y
Android-icon.svg rk3588-XYZ-android12-YYYYMMDD.img.zip 12 Android 12 Tablet 5.10.y
Openmediavault250.png rk3588-XYZ-openmediavault-6.1-YYYYMMDD.img.gz Shaitan OpenMediaVault NAS system, base on Debian 12 6.1.y
Proxmox.svg rk3588-XYZ-proxmox-6.1-YYYYMMDD.img.gz 8.2.7 Proxmox VE OS (Preview), base on Debian 12 6.1.y
Openwrt-icon.svg rk3588-XYZ-friendlywrt-21.02-YYYYMMDD.img.gz 21.02 FriendlyWrt, based on OpenWrt 21.02 6.1.y
Openwrt-icon.svg rk3588-XYZ-friendlywrt-21.02-docker-YYYYMMDD.img.gz 21.02 FriendlyWrt with Docker, based on OpenWrt 21.02 6.1.y
Openwrt-icon.svg rk3588-XYZ-friendlywrt-23.05-YYYYMMDD.img.gz 23.05 FriendlyWrt, based on OpenWrt 23.05 6.1.y
Openwrt-icon.svg rk3588-XYZ-friendlywrt-23.05-docker-YYYYMMDD.img.gz 23.05 FriendlyWrt with Docker, based on OpenWrt 23.05 6.1.y
Other Image
Openwrt-icon.svg Github Actions - FriendlyWrt 21.02,23.05 FriendlyWrt 6.1.y
Linux-tux.svg rk3588-eflasher-multiple-os-YYYYMMDD-25g.img.gz - It contains multiple OS image files, making it convenient for testing different operating systems, this image disables automatic flashing at startup; you will need to manually select the OS to flash.
4.4.1.2 Tools (optional)

Visit download link to download tools (in the "05_Tools" directory).

Filename Description
win32diskimager.rar This program is designed to write a raw disk image to a removable device or backup a removable device to a raw image file
SD Card Formatter A program (application) that allows easy and quick clear the SD card
RKDevTool_Release_v2.84.zip Rockchip flashing tool, for USB upgrade

4.4.2 Flashing the OS to the microSD card

Follow the steps below:

  • Get an 8G microSD card;
  • Visit download linkto download image files (in the "01_Official images/01_SD card images" directory);
  • Download the win32diskimager tool (in the "05_Tools" directory), or use your preferred tool;
  • Extract the .gz format compressed file to get the .img format image file;
  • Run the win32diskimager utility under Windows as administrator. On the utility's main window select your SD card's drive, the wanted image file and click on "write" to start flashing the SD card.
  • Take out the SD and insert it to CM3588's microSD card slot;
  • Power on CM3588 and it will be booted from your TF card, some models may require pressing the Power button to start;

4.4.3 Install OS to eMMC

4.4.3.1 Option 1: Install OS via TF Card

This method firstly boots a mini Linux from a TF card and then automatically runs an EFlasher utility to install the OS to eMMC. You can connect your system to an HDMI monitor and watch its progress.
This is optional. You can watch its progress by observing its LEDs as well:

By default, flashing starts automatically upon power-up, so be sure to back up the data in eMMC. If you don't want it to start automatically, you can use image file with a filename containing the words 'multiple-os' and manually select the OS you want to flash on the interface.

4.4.3.1.1 Flash Official OS to eMMC

Follow the steps below:

  • Get an SDHC card with a minimum capacity of 8G
  • Visit download linkto download image files (in the "01_Official images/02_SD-to-eMMC images" directory) and win32diskimager tool (in the "05_Tools" directory);
  • Extract the .gz format compressed file to get the .img format image file;
  • Run the win32diskimager utility under Windows as administrator. On the utility's main window select your SD card's drive, the wanted image file and click on "write" to start flashing the SD card.
  • Eject your SD card and insert it to CM3588’s microSD card slot.
  • Turn on CM3588, it will boot from the SD card and automatically run EFlasher to install the OS to the board’s eMMC.
  • After flashing is complete, eject the SD card from CM3588, CM3588 will automatically reboot and boot from eMMC.
4.4.3.1.2 Flash third party OS (Image file) to eMMC
  • Auto Install (Default Behavior)

1) Download an “eflasher” firmware from network drive(in the "01_Official images/02_SD-to-eMMC images" directory), extract it and install it to a TF card ;
2) Eject and insert the TF card to your PC, after a “FriendlyARM” device shows up(Under Linux, it is a “FriendlyARM” directory), copy the image file ending with .raw or .gz into the directory (Note: if your file is in .img format, please rename it to .raw format).
3) Open the eflasher.conf file on the TF card, set “autoStart=” to the name of your image file, such as:

autoStart=openwrt-rockchip-armv8_nanopi-ext4-sysupgrade.img.gz

In addition to third-party image, official image files which with the '-sd-' word in the filename are also supported, for example: rk3NNN-sd-friendlywrt-21.02-YYYYMMDD.img.gz
4) Eject the TF card, insert the TF card to CM3588, power it on it will automatically install your firmware. You can watch the installation progress by observing the LEDs’ status.

4.4.3.2 Option 2: Install OS on Web Page

Get a TF card which has been installed with FriendlyWrt, log in FriendlyWrt on the web page, click on “System” ->”eMMC Tools”. Click on “Select file” to select your wanted image file, either an official image (filename containing '-sd-') or a third party image. The file should be a “.gz” or “.img” file.
After a file is selected, click on “Upload and Write” to start installing an OS.
Friendlywrt-emmctools2-en.png
After installation is done, eject the SD card, the system will automatically reboot and load the OS from eMMC. After the OS begins to load, if the system LED is flashing and the network LED is on, it means the the OS has loaded successfully. If the OS is FriendlyWrt, you can click on “Go to Homepage” to enter the homepage.
For official OS, you need select the file with the filename containing '-sd-', for example: rk3NNN-sd-friendlywrt-21.02-YYYYMMDD.img.gz, the compression file only supports the .gz format. If the file is too large, you can compress it into .gz format before uploading.

4.4.3.3 Option 3: Install OS via USB
4.4.3.3.1 Step 1: Install USB Driver and Tools/Utilities

Download a driver file DriverAssitant_v5.12.zip under the “tools” directory from network drive, extract and install it.
Under the same directory, download a utility RKDevTool_Release_v2.84.zip and extract it.

4.4.3.3.2 Step 2: Connect CM3588 to PC and Enter Installation Mode

1) Press and hold the “Mask” key, power on the board. After the status LED has been on for at least 3 seconds, release the Mask key;
2) Use a USB C-to-A cable, connect CM3588 to a PC;
Cm3588-usbflash.jpg

4.4.3.3.3 Step 3: Install image to eMMC

A firmware in general is packaged in either of the two options: the first is an whole image (ie, update.img) which is often offered by third party developers, the second is that an image is packaged and placed in multiple partition images. FriendlyElec offers an image in the latter option.

  • Option 1: Install whole image (ie, update.img)

On a PC which has the extracted RKDevTool_Release_v2.84 utility, go to the RKDevTool_Release_v2.84 directory, run the RKDevTool.exe file. If everything works, you will see a “Found a new Maskrom device” message on the utility;
Go to “Upgrade Firmware(升级固件)”, click on “Firmware(固件)”, select your wanted image file, and click on “Upgrade(升级)” to install. After installation is done, your board will reboot automatically and load the system from eMMC;

  • Option 2: Install OS that is packaged & placed in multiple partition images

Go to network drive to download your needed package and extract it (in the "01_Official images/03_USB upgrade images). After it is extracted, you will see some utilities and a configuration file under the directory. double click on RKDevTool.exe, you will see a “Found a new Maskrom device” message on the utility. Click on the “Execute”, wait a moment and it will be installed. After installation is done your system will automatically reboot and load the system from eMMC.

4.4.4 Installing the System to M.2 or USB Drive

You can use a TF card to boot the eFlasher system, allowing the boot and system to be installed on different storage devices. However, since the CPU doesn’t support booting directly from M.2 and USB devices, the system can be installed on M.2 and USB devices, but the boot must still be installed on eMMC or a TF card.
Steps are as follows:

  • Prepare a TF card with a capacity of 32GB or larger.
  • Visit [the download link here](http://download.friendlyelec.com/CM3588) to download the firmware file named XXXX-eflasher-multiple-os-YYYYMMDD-30g.img.gz (located in the “01_Official images/02_SD-to-eMMC images” directory).
  • Flash the firmware to the TF card, connect the storage device you intend to use on CM3588, insert the TF card and power on, we need to perform the operations in the eFlasher GUI. If your CM3588 does not have a display interface, you can use VNC; refer to Using VNC to Operate eFlasher.
  • In the eFlasher GUI, select the OS to install, and in the OS settings interface, choose the destination for boot installation (typically eMMC), then choose the destination for system installation (options include eMMC, M.2 hard drive, USB storage, etc.), as shown below:

Eflasher-select-boot-and-system-device.png

  • If no eMMC is available, the TF card can serve as the boot by inserting another TF card into the USB port via a USB card reader and selecting it as the boot destination, enabling booting from the TF card with the system stored on the M.2 or USB drive.
  • After flashing, eject the SD card from CM3588. If booting from eMMC, CM3588 will automatically restart into the newly flashed system. If boot installation is on a TF card, power off, insert the boot TF card, and power on again.
  • For a more detailed installation guide, please refer to this link.

5 Getting Started with OpenMediaVault

5.1 Introduction to OpenMediaVault

OpenMediaVault is the next-generation Network Attached Storage (NAS) solution based on Debian Linux. It includes services such as SSH, (S)FTP, SMB/CIFS, DAAP media server, RSync, BitTorrent client, and more. Due to its modular framework design, it can be enhanced through plugins.
OpenMediaVault version：

  • OS: Debian 12
  • OpenMediaVault: 7.0.5-1 (Sandworm)
  • Others: built-in OMV-Extras

Openmediavault7.png

6 Work with Ubuntu 22.04 Desktop

6.1 Introduction to Ubuntu 22.04 Desktop

Ubuntu 22.04 Desktop has the following features：

  • Uses GNOME 42 as default desktop;
  • Uses Wayland as default display server;
  • Mali GPU-based OpenGL ES support;
  • Support Rockhip MPP video hard coding and hard decoding;
  • Pre-installed mpv and kodi, support video hardware decoding;
  • Compatible with Docker and Plex server;

Ubuntu2204desktop.png

7 Work with Android

Android include the following features:

  • There are two versions, TV and Tablet;
  • Support infrared remote control (only for models with Ir Receiver);
  • Support Bluetooth remote control (requires USB or M.2 Bluetooth module);
  • Support wired network;
  • Support WiFi (requires external USB or M.2 WIFI module);
  • Support video hard decoding;

AndroidTV12.png

7.1 WiFi models supported by Android

7.1.1 M.2 WiFi Module

  • RTL8822CE
7.1.1.1 Usb Dongle
  • RTL8821CU (Vid: 0BDA, Pid: C811) (Test sample:TP-Link TL-WDN5200H)
  • RTL8812AU (Vid: 0BDA, Pid: 8812)
  • MediaTek MT7662 (Vid: 0E8D, Pid: 7612) (Test sample:COMFAST CF-WU782AC V2)

7.2 Bluetooch models supported by Android

7.2.1 Bluetooth Adapters

  • RTL8822CE
  • RTL8761B
  • CSR8510 A10 Bluetooth Dongle 0a12:0001

(Note: unsupported device ID 0x2B89:0x8761)

7.2.2 Bluetooth Remote

  • Amazon Fire TV Remote

7.3 How to use ADB

7.3.1 USB connection

Please note: After turning on the ADB, the USB3 port will work in Device mode, if you need to connect a device such as a USB stick, you need to turn off the ADB and restart the board
In general, ADB is disabled by default, please follow the steps below to enable it:

  • Connect your development board to your computer using a USB A-to-A data cable, referring to the figure below, be sure to connect it to the USB port closest to the edge:

7.3.2 For Android Tablet

  • Go to Settings -> About tablet -> tap the "Build number" at the bottom of the screen 7 times in a row;
  • Go to Settings -> System -> Advance -> Developer options, check USB-Debugging, and then reboot;
  • To use ADB over the network, you need to connect to WiFi first, then enable Wireless debugging. In the prompt "Allow wireless debugging on the network", select "Always allow on this network", and then click "Allow".

7.3.3 For Android TV

  • Click the Settings icon -> Device Preferences -> About -> tap the "Android TV OS build" at the bottom of the screen 7 times in a row;
  • Click the Settings icon -> Device Preferences -> Developer options, check USB-Debugging, and then reboot;
  • To use ADB over the network, on Android TV, which supports both WiFi and wired networks, enable network ADB by checking "Internet ADB" on the "Developer options" UI.

7.3.4 Using ADB

  • Install ADB drivers and commands based on your operating system;
  • Normally, the Android status bar will prompt "USB debugging connected", indicating that ADB has been enabled. Enter the following command on your computer to check the connection：
$ adb devices
List of devices attached
27f7a63caa3faf16	device
  • Enter adb shell:
$ adb shell
nanopi3:/ $

7.3.5 Using ADB over the network

  • On an Android Tablet, go to Settings -> System -> Advance -> Developer options, then click on Wireless debugging to view the IP address and port.
  • The default network ADB port for Android TV is 5555.

Assuming the IP address and port displayed on the Wireless debugging interface are 192.168.1.167:45055, the ADB commands are as follows:

  • To connect to the device:
$ adb connect 192.168.1.167:45055

connected to 192.168.1.167:45055

  • To enter ADB shell:
$ adb shell
nanopi3:/ $

If there are multiple devices, use the -s parameter to specify the device's IP and port, as shown below: 

$ adb -s 192.168.1.167:45055 shell
nanopi3:/ $

7.4 How to Change Default Launcher in Android TV

  • Refer to the previous section to enable adb
  • For example, install the third-party launcher Emotn UI via APK, visit the website https://app.emotn.com/ui/ to download the APK, and then install it using ADB:
$ adb install com.oversea.aslauncher_1.0.9.0_5094.apk
Performing Streamed Install
Success
  • After the installation is complete, launch it, and then enter the following ADB command to obtain its package name:
$ adb shell dumpsys window | grep mCurrentFocus
mCurrentFocus=Window{7a950fb u0 com.oversea.aslauncher/com.oversea.aslauncher.ui.main.MainActivity}
  • As you can see, the package name of Emotn UI is com.oversea.aslauncher, set it as the default launcher:
$ adb shell pm set-home-activity com.oversea.aslauncher
Success
  • Then comes the critical step, you need to disable the native launcher using the following command:
$ adb shell pm disable-user --user 0 com.google.android.tvlauncher
Package com.google.android.tvlauncher new state: disabled-user
  • Finally, restart the device to see the effect, the device should boot directly into Emotn UI:
$ adb shell reboot
  • From now on, if you want to install another launcher, you can switch between them through the GUI. for example, after installing FLauncher, you can enter the following settings interface to set FLauncher as the default launcher: Settings -> Device Preferences -> Advanced setting -> Default Launcher:

Androidtv-default-launcher.png

7.5 Wired networks on Android

  • Any network port can connect to the network via DHCP
  • If you want to configure a static IP, only eth0 interface is supported
  • Some applications may have compatibility issues and report no network connection error, but the network is actually connected

7.6 EC20 4G LTE module on Android

EC20 support is disabled by default, you can check the status with the following command, if the EC20 is disabled, the number 1 will be displayed: 

su
getprop persist.vendor.radio.no_modem_board

To enable EC20, use the following command (takes effect after a reboot): 

su
setprop persist.vendor.radio.no_modem_board 0

8 Work with Debian11 Desktop

8.1 Introduction to Debian11 Desktop

Debian11 Desktop is a light-weighted debian desktop system，it has the following features：

  • Uses Xfce as default desktop;
  • Mali GPU-based OpenGL support;
  • Support Rockhip MPP video hard coding and hard decoding;
  • Pre-installed mpv and smplayer, both support 4K video hardware decoding;
  • Pre-installed Chromium browser, support vpu/gpu hardware acceleration (video hard decoding limited to h264/mp4 format);
  • Compatible with Plex Server and Docker;

Debian11-xfce.png

9 Work with FriendlyCore

9.1 FriendlyCore User Account

  • Non-root User:
   User Name: pi
   Password: pi
  • Root:
   User Name: root
   Password: fa

9.2 Update Software Packages

$ sudo apt-get update

9.3 Setup Network Configurations

9.3.1 Set static IP address

By default "eth0" is assigned an IP address obtained via dhcp. If you want to change the setting you need to change the following file: 

vi /etc/network/interfaces.d/eth0

For example if you want to assign a static IP to it you can run the following commands: 

auto eth0
iface eth0 inet static
    address 192.168.1.231
    netmask 255.255.255.0
    gateway 192.168.1.1

9.3.2 Set a DNS

You also need to modify the following file to add the DNS configuration: 

vi /etc/systemd/resolved.conf

For example, set to 192.168.1.1: 

[Resolve]
DNS=192.168.1.1

Restart the systemd-resolved service with the following command: 

sudo systemctl restart systemd-resolved.service
sudo systemctl enable systemd-resolved.service

9.3.3 Set up to use another network interface

To change the setting of "eth1" you can add a new file similar to eth0's configuration file under the /etc/network/interfaces.d/ directory.

9.4 Setup Wi-Fi

First, use the following command to check if Network-Manager is installed on your system: 

which nmcli

If you have installed it, refer to this link to connect to WiFi: Use NetworkManager to configure network settings, If you do not have Network-Manager installed on your system, please refer to the following method to configure WiFi,
By default the WiFi device is "wlan0". You need to create a configuration file under "/etc/network/interfaces.d/" for WiFi: 

vi /etc/network/interfaces.d/wlan0

Here is a sample wlan0 file: 

auto lo
iface lo inet loopback
auto wlan0
iface wlan0 inet dhcp
wpa-driver wext
wpa-ssid YourWiFiESSID
wpa-ap-scan 1
wpa-proto RSN
wpa-pairwise CCMP
wpa-group CCMP
wpa-key-mgmt WPA-PSK
wpa-psk YourWiFiPassword

Please replace "YourWiFiESSID" and "YourWiFiPassword" with your WiFiESSID and password. After save and close the file you can connect to your WiFi source by running the following command: 

sudo systemctl daemon-reload
sudo systemctl restart networking

After you power on your board it will automatically connect to your WiFi source.
Please note that if you use one TF card to boot multiple boards the WiFi device name will likely be named to "wlan1", "wlan2" and etc. You can reset it to "wlan0" by deleting the contents of the following file and reboot your board: /etc/udev/rules.d/70-persistent-net.rules

9.5 Install the kernel-header package

sudo dpkg -i /opt/linux-headers-*.deb


9.6 Delete Qt5 and related files

Execute the following commands：

su root
cd /
rm -rf usr/local/Trolltech/Qt-5.10.0-rk64one usr/local/Trolltech/Qt-5.10.0-rk64one-sdk usr/bin/setqt5env* usr/bin/qt5demo etc/qt5
rm -rf opt/{qt5-browser,Qt5_CinematicExperience,qt5-multi-screen-demo,qt5-nmapper,qt5-player,qt5-smarthome,QtE-Demo,qt5-qml-image-viewer,dual-camera}

10 How to Compile

10.1 Setup Development Environment

10.1.1 Method 1: Using docker to cross-compile

Please refre to docker-cross-compiler-novnc

10.1.2 Method 2: Setup build environment on the host machine

10.1.2.1 Install required packages

Install and run requirements ubuntu 20.04, install required packages using the following commands: 

sudo apt-get -y update
sudo apt-get install -y sudo curl
sudo bash -c \
  "$(curl -fsSL https://raw.githubusercontent.com/friendlyarm/build-env-on-ubuntu-bionic/master/install.sh)"

The following cross-compilers will be installed:

Version Architecture Compiler path Purpose
4.9.3 armhf /opt/FriendlyARM/toolchain/4.9.3 Can be used to build 32-bit ARM applications
6.4 aarch64 /opt/FriendlyARM/toolchain/6.4-aarch64 Can be used to build kernel 4.4
11.3 aarch64 /opt/FriendlyARM/toolchain/11.3-aarch64 Can be used to build kernel 4.19 or higher and U-Boot
10.1.2.2 Setting the compiler path

Based on the table in the previous section, select the appropriate version of the compiler and add the compiler's path to PATH. For example, if you want to use the 11.3 cross-compiler, edit ~/.bashrc using vi and add the following content to the end: 

export PATH=/opt/FriendlyARM/toolchain/11.3-aarch64/bin:$PATH
export GCC_COLORS=auto

Run the ~/.bashrc script to make it effective in the current commandline. Note: there is a space after ".": 

. ~/.bashrc

To verify if the installation was successful： 

$ aarch64-linux-gcc -v
Using built-in specs.
COLLECT_GCC=aarch64-linux-gcc
COLLECT_LTO_WRAPPER=/opt/FriendlyARM/toolchain/11.3-aarch64/libexec/gcc/aarch64-cortexa53-linux-gnu/11.3.0/lto-wrapper
Target: aarch64-cortexa53-linux-gnu
Configured with: /home/cross/arm64/src/gcc/configure --build=x86_64-build_pc-linux-gnu --host=x86_64-build_pc-linux-gnu --target=aarch64-cortexa53-linux-gnu --prefix=/opt/FriendlyARM/toolchain/11.3-aarch64 --exec_prefix=/opt/FriendlyARM/toolchain/11.3-aarch64 --with-sysroot=/opt/FriendlyARM/toolchain/11.3-aarch64/aarch64-cortexa53-linux-gnu/sysroot --enable-languages=c,c++ --enable-fix-cortex-a53-843419 --with-arch=armv8-a+crypto+crc --with-cpu=cortex-a53 --with-pkgversion=ctng-1.25.0-119g-FA --with-bugurl=http://www.friendlyelec.com/ --enable-objc-gc --enable-__cxa_atexit --disable-libmudflap --disable-libgomp --disable-libssp --disable-libquadmath --disable-libquadmath-support --disable-libsanitizer --disable-libmpx --with-gmp=/home/cross/arm64/buildtools --with-mpfr=/home/cross/arm64/buildtools --with-mpc=/home/cross/arm64/buildtools --with-isl=/home/cross/arm64/buildtools --enable-lto --enable-threads=posix --disable-libstdcxx-pch --enable-clocale=gnu --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-indirect-function --enable-gnu-unique-object --enable-default-pie --enable-linker-build-id --with-linker-hash-style=gnu --enable-plugin --enable-gold --with-libintl-prefix=/home/cross/arm64/buildtools --disable-multilib --with-local-prefix=/opt/FriendlyARM/toolchain/11.3-aarch64/aarch64-cortexa53-linux-gnu/sysroot --enable-long-long --enable-checking=release --enable-link-serialization=2
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 11.3.0 (ctng-1.25.0-119g-FA)

10.2 Build Openwrt/Friendlywrt

10.2.1 Download Code

Two versions are available, please choose as required:

10.2.1.1 FriendlyWrt 21.02
mkdir friendlywrt21-rk3588
cd friendlywrt21-rk3588
git clone https://github.com/friendlyarm/repo --depth 1 tools
tools/repo init -u https://github.com/friendlyarm/friendlywrt_manifests -b master-v21.02 \
        -m rk3588.xml --repo-url=https://github.com/friendlyarm/repo  --no-clone-bundle
tools/repo sync -c  --no-clone-bundle
10.2.1.2 FriendlyWrt 23.05
mkdir friendlywrt23-rk3588
cd friendlywrt23-rk3588
git clone https://github.com/friendlyarm/repo --depth 1 tools
tools/repo init -u https://github.com/friendlyarm/friendlywrt_manifests -b master-v23.05 \
        -m rk3588.xml --repo-url=https://github.com/friendlyarm/repo  --no-clone-bundle
tools/repo sync -c  --no-clone-bundle

10.2.2 First compilation step

./build.sh rk3588.mk  # or rk3588-docker.mk

All the components (including u-boot, kernel, and friendlywrt) are compiled and the sd card image will be generated, then execute the following command to generate the image file for installing the system into the emmc: 

./build.sh emmc-img

After making changes to the project, the sd card image needs to be repackaged by running the following command: 

./build.sh sd-img

10.2.3 Secondary compilation steps

cd friendlywrt
make menuconfig
rm -rf ./tmp
make -j${nproc}
cd ../
./build.sh sd-img
./build.sh emmc-img

10.2.4 Build u-boot only

./build.sh uboot

10.2.5 Build kernel only

./build.sh kernel

10.2.6 Build friendlywrt only

./build.sh friendlywrt

Or go to the friendlywrt directory and follow the standard openwrt commands. If you get an error with the above command, try using the following command to compile in a single thread: 

cd friendlywrt
make -j1 V=s

10.3 Build Buildroot

please refer to: Buildroot

10.4 Build Other Linux

10.4.1 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 nanopi6_defconfig
openmediavault-arm64 linux v6.1.y GPT sd-fuse nanopi6-v6.1.y
ubuntu-jammy-desktop-arm64 GPT
ubuntu-jammy-minimal-arm64
ubuntu-jammy-x11-desktop-arm64
ubuntu-focal-desktop-arm64
friendlycore-focal-arm64
debian-bookworm-core-arm64
debian-bullseye-desktop-arm64
debian-bullseye-minimal-arm64
friendlywrt21 nanopi6_linux_defconfig
friendlywrt.config
friendlywrt21-docker
friendlywrt23
friendlywrt23-docker

10.4.2 Build kernel linux-v6.1.y

Clone the repository to your local drive then build: 

git clone https://github.com/friendlyarm/kernel-rockchip --single-branch --depth 1 -b nanopi6-v6.1.y 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

Run your build:
Please refre to #Running the build

10.4.3 Build 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_xx.yy.zzz.bin (aka MiniLoaderAll.bin)

Run your build:
Please refre to #Running the build

10.4.4 Running the build

10.4.4.1 Install to target board

RK3588 uses GPT partitions by default, you can use the dd command, but be careful to choose the right output device:

  • 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=uboot.img of=/dev/mmcblk2p1 bs=1M

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

10.4.4.2 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 v6.1.y sd-fuse_rk3588
10.4.4.3 USB flashing
10.4.4.3.1 Linux

Reboot the board and enter loader mode with the following command: 

sudo reboot loader

To flash U-Boot and kernel using the "upgrade_tool_v2.17_for_linux" tool, please use the following command: 

sudo upgrade_tool di -k kernel.img
sudo upgrade_tool di -re resource.img
sudo upgrade_tool di -u uboot.img
sudo upgrade_tool RD

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

10.5 Build the code using scripts

10.5.1 Download scripts and image files

git clone https://github.com/friendlyarm/sd-fuse_rk3588.git --single-branch -b kernel-6.1.y
cd sd-fuse_rk3588
tar xvzf /path/to/netdrive/03_Partition\ image\ files/friendlycore-focal-arm64-images.tgz

10.5.2 Compile the kernel

Download the kernel source code and compile it. the relevant image files in the friendlycore-focal-arm64 directory will be automatically updated, including the kernel modules in the file system: 

git clone https://github.com/friendlyarm/kernel-rockchip --depth 1 -b nanopi6-v6.1.y kernel-rk3588
KERNEL_SRC=$PWD/kernel-rk3588 ./build-kernel.sh friendlycore-focal-arm64

10.5.3 Compile the kernel headers

git clone https://github.com/friendlyarm/kernel-rockchip --depth 1 -b nanopi6-v6.1.y kernel-rk3588
MK_HEADERS_DEB=1 BUILD_THIRD_PARTY_DRIVER=0 KERNEL_SRC=$PWD/kernel-rk3588 ./build-kernel.sh friendlycore-focal-arm64

10.5.4 Compile the uboot

Download the uboot source code and compile it. the relevant image files in the friendlycore-focal-arm64 directory will be automatically updated: 

git clone https://github.com/friendlyarm/uboot-rockchip --depth 1 -b nanopi6-v2017.09
UBOOT_SRC=$PWD/uboot-rockchip ./build-uboot.sh friendlycore-focal-arm64

10.5.5 Generate new image

Repackage the image file in the friendlycore-focal-arm64 directory into sd card image: 

./mk-sd-image.sh friendlycore-focal-arm64

After the command is completed, the image is in the out directory, you can use the dd command to make the SD boot card, for example: 

dd if=out/rk3588-sd-friendlycore-focal-5.10-arm64-YYYYMMDD.img of=/dev/sdX bs=1M

10.6 Building AOSP from source

10.6.1 Hardware and Software Requirements

  • Your computer should have at least 16GB of RAM and 300GB of disk space. We recommend using a machine with 32GB of RAM and a large-capacity, high-speed SSD, and we do not recommend using virtual machines.
  • If you encounter compilation errors, they may be caused by problems with the compilation environment. We recommend using the following Docker container for compilation: docker-cross-compiler-novnc.

10.6.2 Download source 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

10.6.3 Tablet profile build (First Build)

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

10.6.4 TV profile build (First Build)

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

10.6.5 Second build

# export INSTALL_GAPPS_FOR_TESTING=yes  # include google apps
. setenv.sh
make
./build.sh -Mu

10.6.6 Running your AOSP build

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.

10.6.6.1 USB Flashing

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

10.6.6.2 SD-to-eMMC Flashing

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 CM3588 and re-flash;

10.6.7 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

11 Using On-Board Hardware Resources

11.1 Using VPU

Please refer to NPU

11.2 Using NPU

Please refer to NPU

12 Backup rootfs and create custom SD image (to burn your application into other boards)

12.1 Backup rootfs

Run the following commands on your target board. These commands will back up the entire root partition: 

sudo passwd root
su root
cd /
tar --warning=no-file-changed -cvpzf /rootfs.tar.gz \
    --exclude=/rootfs.tar.gz --exclude=/var/lib/docker/runtimes \
    --exclude=/etc/firstuser --exclude=/etc/friendlyelec-release \
    --exclude=/usr/local/first_boot_flag --one-file-system /

Note: if there is a mounted directory on the system, an error message will appear at the end, which can be ignored.

12.2 Making a bootable SD card from a root filesystem

Run the following script on your Linux PC host, we'll only mention "debian-bullseye-desktop-arm64 os" for brevity, but you can apply the same process for every linux OS. 

su root
git clone https://github.com/friendlyarm/sd-fuse_rk3588 --single-branch -b kernel-6.1.y
cd sd-fuse_rk3588
tar xvzf /path/to/netdrive/03_Partition\ image\ files/debian-bullseye-desktop-arm64-images.tgz
tar xvzf /path/to/netdrive/03_Partition\ image\ files/emmc-eflasher-images.tgz
scp pi@BOARDIP:/rootfs.tar.gz /rootfs.tar.gz
mkdir rootfs
tar xvzfp rootfs.tar.gz -C rootfs --numeric-owner --same-owner
./build-rootfs-img.sh rootfs debian-bullseye-desktop-arm64
./mk-sd-image.sh debian-bullseye-desktop-arm64
./mk-emmc-image.sh debian-bullseye-desktop-arm64 autostart=yes


13 Connect NVME SSD High Speed Hard Disk

13.1 Detection of SSD

root@FriendlyELEC:~# cat /proc/partitions 
major minor  #blocks  name
   1        0       4096 ram0
 259        0  125034840 nvme0n1

If there is a nvme0n1 device node it means an SSD is recognized.

13.2 Partition of SSD

To mount an SSD under Linux we re-partition it as one section by running the following command: 

(echo g; echo n; echo p; echo 1; echo ""; echo ""; echo w; echo q) | fdisk /dev/nvme0n1

If you want to re-partition it to multiple sections you can run "fdisk /dev/nvme0n1". For more detail about this command refer to the fdisk's manual.

13.3 Format Section to EXT4

After an SSD is successfully partitioned you can check its sections by running "cat /proc/partitions". The /dev/nvme0n1p1 section is used to store data: 

root@FriendlyELEC:~# cat /proc/partitions
major minor  #blocks  name
 
   1        0       4096 ram0
 259        0  125034840 nvme0n1
 259        2  125033816 nvme0n1p1


The following command formats a section to ext4: 

mkfs.ext4 /dev/nvme0n1p1

13.4 Auto Mount SSD on System Startup

Before we mount an SSD's section you need to know its Block ID. You can check it by running "blkid": 

blkid /dev/nvme0n1p1
/dev/nvme0n1p1: UUID="d15c4bbf-a6c3-486f-8f81-35a8dbd46057" TYPE="ext4" PARTUUID="887628f0-01"

Add a "Block ID" to "/etc/fstab" and here is what it looks like

UUID=<Block ID> /media/nvme ext4 defaults 0 0

You need to replace <Block ID> with the UUID obtained by running "blkid". To mount the SSD in our example we made the "/etc/fstab" file as follows:

UUID=d15c4bbf-a6c3-486f-8f81-35a8dbd46057 /media/nvme ext4 defaults 0 0

We want to mount an SSD to "/media/nvme" but this directory doesn't exist. Therefore we create it and change its access right by running the following commands: 

mkdir -p /media/nvme
chmod 777 /media/nvme

Run "mount" to check if the SSD is mounted successfully: 

mount /media/nvme

You can reboot your board to check if your SSD will be automatically mounted: 

reboot

14 Common Linux-based operating system operations

14.1 Using ADB on Linux Systems

14.1.1 Enabling ADB in Buildroot System

Enable on Startup 

mv /etc/init.d/K50usbdevice.sh /etc/init.d/S50usbdevice.sh
reboot

Enable Temporarily 

usbdevice-wrapper start

14.1.2 Enabling ADB in Ubuntu and Debian Systems

Enable on Startup 

sudo systemctl enable usbdevice
sudo reboot

Enable Temporarily 

usbdevice-wrapper start

14.1.3 How to Connect

When using ADB, the port connected to the computer is the same as the USB flashing port.

14.2 Install Kernel Headers

To install the .deb file located in the /opt/archives directory: 

sudo dpkg -i /opt/archives/linux-headers-*.deb

To download and update the kernel header files online:

wget http://112.124.9.243/archives/rk3588/linux-headers-$(uname -r)-latest.deb
sudo dpkg -i ./linux-headers-latest.deb

You can visit http://112.124.9.243/archives/rk3588 to see which kernel deb packages are available.

14.3 Update Kernel to Latest Version

This will update the kernel to the latest version and update the kernel and resource partitions, as well as the kernel modules:

wget http://112.124.9.243/archives/rk3588/linux-image-$(uname -r)-latest.deb
sudo dpkg -i ./linux-image-latest.deb
sudo reboot

14.4 Setting Kernel Boot Parameters (eMMC Only)

Flash the firmware file XXXX-eflasher-multiple-os-YYYYMMDD-30g.img.gz to a TF card, then insert the TF card into your computer. Windows will usually recognize the TF card partition automatically (formatted as exFAT). For Linux or Mac users, manually mount the first partition of the TF card. Assuming the TF card’s device name is /dev/sdX, mount /dev/sdX1.

Edit the info.conf configuration file in the OS directory on the TF card, adding the bootargs-ext parameter. For example: 

bootargs-ext=rockchipdrm.fb_max_sz=2048

To remove a specified parameter, set it to empty. For example, to remove the userdata parameter: 

bootargs-ext=userdata=

After editing, use this TF card to flash the system to eMMC.

To set kernel boot parameters during the creation of a mass production card, refer to the following script (example for RK3588): https://github.com/friendlyarm/sd-fuse_rk3588/blob/kernel-6.1.y/test/test-custom-bootargs.sh

15 Unbricking Method

If the ROM is not installed correctly, causing the development board to become bricked, and you might not have the opportunity to reinstall the ROM via an SD card, you need to enter Maskrom mode to unbrick it by erasing the storage device.

15.1 Windows Users

15.1.1 Download Required Files

  • Get the necessary tools: Visit here, find RKDevTool_v3.19_for_window.zip and DriverAssitant_v5.12.zip in the 05_Tools directory, and download them to your local machine.
  • Install Rockchip USB driver and RKDevTool: Extract DriverAssitant_v5.12.zip to install the Rockchip USB driver, and extract RKDevTool_v3.19_for_window.zip to obtain the Rockchip flashing tool RKDevTool.
  • Get the loader: Visit here, enter the tools directory corresponding to your CPU model, and download MiniLoaderAll.bin.

15.1.2 Enter Maskrom Mode to Erase the Storage Device

  • Start RKDevTool on your computer.
  • Press and hold the “Mask” key, power on the board. After the status LED has been on for at least 3 seconds, release the Mask key
  • Use a USB C-to-A cable, connect CM3588 to a PC

Cm3588-usbflash.jpg

  • You will see Found One MASKROM Device displayed at the bottom of the RKDevTool interface, as shown below:

Rkdevtool found one maskrom device.png

  • Click the Advanced Function tab in the RKDevTool interface.
  • In the Boot text box, select MiniLoaderAll.bin, then click the Download button.
  • Select EMMC, click Switch Storage, then click the EraseAll button to erase the eMMC.

Rkdevtool erase emmc.png

  • (Optional): If your CM3588 has SPI Nor Flash, select SPINOR, click Switch Storage, then click the EraseAll button to erase the SPI Nor Flash.

Rkdevtool erase spinorflash.png

  • At this point, CM3588 is restored to its initial state and can be normally booted via SD card or eMMC.

15.2 Linux Users

15.2.1 Download the Required Files

  • Get the necessary tools: Visit here and find upgrade_tool_v2.30_for_linux.tgz in the 05_Tools directory and download it locally.
  • Get the loader: Visit here, enter the tools directory corresponding to your CPU model, and download MiniLoaderAll.bin.

15.2.2 Installation for upgrade_tool

Using the following commands: 

tar xzf upgrade_tool_v2.30_for_linux.tgz
cd upgrade_tool_v2.30_for_linux
sudo cp upgrade_tool /usr/local/sbin/
sudo chmod 755 /usr/local/sbin/upgrade_tool

15.2.3 Enter Maskrom Mode to Erase the Storage Device

  • Connect CM3588 to the computer using a USB data cable.
  • Disconnect the power from CM3588, hold down the MASK button, connect the power, and release the button after 4 seconds.
  • Check the connection with the following command:
upgrade_tool LD

A result similar to "DevNo=1 Vid=0x2207,Pid=0x350b,LocationID=13 Mode=Maskrom SerialNo=" indicates that the device has been detected.

  • Erase the eMMC with the following command:
upgrade_tool EF MiniLoaderAll.bin
  • (Optional): If your CM3588 has SPI Nor Flash, erase the SPI Nor Flash with the following commands:
upgrade_tool DB MiniLoaderAll.bin
upgrade_tool SSD   # Select 5, SPINOR
dd if=/dev/zero of=zero.img bs=1M count=16   # For 16M NOR FLASH
upgrade_tool WL 0 zero.img
  • At this point, CM3588 has been restored to its initial state and can boot the system normally via SD card or eMMC.

15.3 Mac Users

Our tests found that upgrade_tool_v2.25 does not work properly on macOS. Therefore, we recommend using Windows or Linux unless an updated version of upgrade_tool becomes available.

16 Link to Rockchip Resources

17 Schematic, PCB CAD File

18 Update Logs

18.1 2023-11-20

Initial Release

18.2 2023-11-28

upload CM3588 pinout and interfaces document.

18.3 2023-12-13

upload CM3588 PinDelay document.

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