Raspberry Pi Quick Start

To use SUSE Linux Enterprise Server for Arm on the Raspberry Pi, a 64-bit Arm* compatible Raspberry Pi* is required. SUSE Linux Enterprise Server for Arm 15 SP2 is tested to work on Raspberry Pi 3 Model A+, Model B, Model B+, and Raspberry Pi 4 Model B boards as well as on Raspberry Pi Compute Module 3 and 3+ on MyPi Industrial IoT Integrator Board.

1.1 Technical Details of the Raspberry Pi 3 Model B #

 

The Raspberry Pi is a series of small single-board computers based on a System-on-a-Chip (SoC) by Broadcom*, featuring various peripherals on the board.

Figure 1: Overview of the Raspberry Pi 3 Model B Connectors, © Efa / English Wikipedia / CC BY-SA 3.0 #

 

Figure 2: Photo of the Raspberry Pi 3 Model B Connectors, © Evan-Amos / Own work / Public Domain #

 

Selected Features of the Raspberry Pi 3 Model B/B+ #

 

CPU

The Broadcom BCM2837 SoC includes a quad-core Arm* Cortex*-A53 Application Processor supporting the Armv8 32-bit and 64-bit instruction sets. With the default configuration, it is clocked up to 1.2 GHz.

RAM

1024 MiB DDR2 memory mounted on the back of the board.

Graphics

Broadcom* VideoCore* IV providing OpenGL* ES 2.0 support. Displays can be connected over HDMI*, composite (TRRS jack), or MIPI* DSI* (ribbon cable).

Ethernet

A USB Ethernet controller on the board provides 10/100 Mbit/s Ethernet (Model B) or 10/100/1000 Mbit/s Ethernet with a maximum throughput of 300 Mbit/s (Model B+).

WLAN

The BCM43438 chip on Model B supports IEEE-802.11b, IEEE-802.11g, and IEEE-802.11n in the 2.4 GHz band. It also provides Bluetooth 2.0 to 4.1 (Low Energy). The BCM43455 chip on Model B+ supports IEEE-802.11b, IEEE-802.11g, IEEE-802.11n, and IEEE-802.11ac in the 2.4 GHz and 5 GHz bands. It provides Bluetooth 4.2 (Low Energy).

Storage

The microSDHC card slot allows for a memory card to be inserted as the primary boot medium.

Power

The Raspberry Pi 3's main power source is the Micro USB connector. If your Raspberry Pi comes with a power supply, it is recommended to use the bundled power supply only.

USB

A total of four USB 2.0 ports are available.

Connectors

A 0.1 inch multi-function pin header is also available. Note that not all functionality of this header is exposed in SUSE Linux Enterprise Server for Arm 15 SP2.

1.2 SUSE Linux Enterprise Server for Arm 15 SP2 #

 

SUSE Linux Enterprise Server for Arm is the first fully supported commercial Linux operating system product available for the Raspberry Pi. You can purchase subscriptions which entitle you to receive all released bug and security fixes, feature updates, and technical assistance from SUSE's worldwide support. Learn more about subscription and support options at https://www.suse.com/support/programs/subscriptions/?id=SUSE_Linux_Enterprise_Server.

Note: Trial Version

If you want to try out SUSE Linux Enterprise Server for Arm 15 SP2 on the Raspberry Pi, SUSE will provide you with a trial version. This gives you access to free patches and updates for a period of 60 days. You must sign in to the SUSE Customer Center at https://scc.suse.com/ using your Customer Center account credentials to receive this free offer. If you do not have a Customer Center account, you must create one to take advantage of the trial version.

Minimum System Requirements for Installation#

• Raspberry Pi 3 Model A+, B, or B+, or Raspberry Pi 4 Model B.

• microSD card with at least 8 GB capacity.

• USB keyboard, mouse.

• HDMI cable and monitor.

• Power supply with at least 2.5 A capacity.

1.2.1 Differences Compared to Raspbian #

 

Raspbian is the de-facto default distribution for the Raspberry Pi. The following paragraphs provide a short overview of differences between SUSE Linux Enterprise Server for Arm on the Raspberry Pi and Raspbian.

Based on Upstream Kernel

Raspbian uses a kernel with modifications especially for the Raspberry Pi. SUSE Linux Enterprise Server for Arm uses the default SUSE Linux Enterprise kernel for AArch64, which is derived from the official mainline kernel.

AArch64 Instruction Set

SUSE Linux Enterprise Server for Arm on the Raspberry Pi is the first distribution for the Raspberry Pi using the AArch64 instruction set.

Boot Process

In Raspbian, the kernel is loaded directly. This is not supported by SUSE Linux Enterprise Server for Arm, where the U-Boot boot loader is used to provide an EFI boot environment. A GRUB2 EFI binary is chain-loaded to provide a graphical boot screen.

Root File System

SUSE Linux Enterprise Server for Arm for the Raspberry Pi uses Btrfs as the file system for the root partition. Compression is enabled by default for better SD card performance.

1.2.2 YaST #

 

YaST is the installation and configuration framework for SUSE Linux Enterprise. It is popular for its ease of use, flexible graphical interfaces and the capability to customize your system quickly during and after installation. YaST can be used to configure your entire system: You can configure hardware, set up networking, manage system services, and tune your security settings. All these tasks can be accessed from the YaST control center. To start it, choose YaST in the menu or run the command xdg-su -c yast2. You will be prompted to enter the password of the root user.

Figure 3: The YaST Control Center #

 

When started, YaST shows an overview of available modules (Figure 3, “The YaST Control Center”). Simply click an icon to open a module.

1.2.3 Zypper #

 

Zypper is the package manager for SUSE Linux Enterprise. It is the tool for installing, updating, and removing packages and for managing repositories.

The general syntax for Zypper invocations is:

zypper [global-options] command [command-options][arguments] ...

Note: Short Command Form

For most commands, there is both a short and a long form. An overview is available with zypper --help.

Installing a package

# zypper install mplayer

Removing a package

# zypper remove mplayer

List available patches

> zypper list-patches

Install available patches

# zypper patch

Note: Installing Software Updates

The recommended way to install available software updates is by using the YaST Online Updater. To start it, choose “Online Update” in “Settings” under “Desktop Apps” in the IceWM menu.

1.2.4 Limitations #

 

Graphics not hardware-accelerated

X.Org hardware acceleration is disabled to improve system stability and reliability.

For other limitations refer to the online version of the Release Notes at https://www.suse.com/releasenotes/aarch64/SUSE-SLES/15-SP2/.

SUSE Linux Enterprise Server for Arm for the Raspberry Pi is distributed as an XZ-compressed image file for microSD cards. This section will guide you through the process of preparing the card for the first boot. If you already have a microSD card containing the image, you can skip this section and go straight to Section 3, “Booting for the First Time”.

Note: SD Card Space Requirements

It is recommended to use a card with a capacity of at least 8 GB.

Warning: All Data on the Card Will Be Lost!

By following the procedure below, all data on the SD card will be overwritten and therefore irrevocably lost. Be very careful when choosing the destination device of the image writing process.

xz -cd IMAGE | dd of=/dev/SDCARDDEV bs=4096

> xz -cd SLES15-SP2-JeOS.aarch64-15.2-RaspberryPi-GM.raw.xz | sudo dd of=/dev/mmcblk0 bs=4096 iflag=fullblock status=progress

After insertion of the prepared microSD card, connect a display, Ethernet cable, and USB keyboard and mouse first, then provide power over Micro USB. After a few seconds you should be able to see a few lines of text on the screen. If that is not the case, recheck the connection to the display.

Note: Operation without Mouse

The JeOS First Boot Assistant can be controlled using the keyboard only. Each user interface element has an accelerator, shown as a highlighted character. To activate an accelerator, press Alt and the appropriate character.

On the first boot, the system will expand to fill the entire SD card, so be patient.

3.1 Initial System Setup with JeOS First Boot Assistant #

 

After the boot is completed, the JeOS First Boot Assistant leads you through the initial system setup.

Note: JeOS First Boot Assistant via a serial connection

To run the JeOS First Boot Assistant wizard via a serial connection, you need to remove the console=tty from the kernel command line console=ttyS0,115200 console=tty in GRUB 2 even if there is no HDMI cable connected.

1. Note that this minimized JeOS image comes without language selection. After the assistant finishes, you will be able to install and select your system locale.

2. First, the keyboard layout needs to be configured. Use the arrow keys or first letter and select OK.

   

3. Read the License Agreement. You need to accept it.

   

4. Select the time zone by using the arrow keys or first letter.

   

5. Select OK to proceed.

6. You will be asked to provide a root password now. Do not forget what you enter here, as you will need it for administration.

   

7. Confirm the root password you just provided by typing it in again.

   

8. Note that you should register your system after installation, as detailed in Section 3.2, “Registration Process”.

   
   

   Note: Deferring Registration

   You will not receive updates or patches until you register using SUSEConnect.

9. Select OK to continue.

10. Finally, you are offered the option to configure a wireless network. If you have a wired Ethernet connection, you can skip this step by selecting No.

    

    If you select Yes, you will see the following screens:

    1. Select a wireless network to connect to and proceed with OK.

       

    2. Select the authentication method for the wireless network and proceed with OK.

       

    3. Enter the passphrase for the wireless network and proceed with OK.

       

Note: WPA EAP authentication

WPA authentication supports just the 'mschapv2' EPA authentication, which is used as default.

If you chose to skip configuration of wireless networks or if you fully completed their configuration, the JeOS First Boot Assistant will exit. The system continues to boot to a login prompt.

You can now log in with root user and the password you chose earlier.

Note: Canceling the JeOS First Boot Assistant

If at any point you select to Cancel the assistant, the system will shut down. You can then disconnect the power supply, make any necessary changes, and start over.

3.2 Registration Process #

 

It is very important to register your SUSE Linux Enterprise Server for Arm subscription to ensure full functionality of your Raspberry Pi system. The SD card image provided by SUSE contains a minimal set of packages that are intended for the initial boot process and to get your Raspberry Pi onto the network.

When you have registered your SUSE Linux Enterprise Server for Arm subscription, you can download other packages you may need, such as compilers. The SUSE Linux Enterprise Server version that runs on your Raspberry Pi is the same version that runs on AMD64/Intel 64, POWER, IBM Z, or on other Arm-based systems.

Important: Setting the Clock

Because the Raspberry Pi does not have a persistent Real Time Clock, make sure that the clock is set to the current date and time before attempting to use Zypper or YaST to install additional packages.

You can initially register your system with the SUSEConnect tool. Afterwards you can also make use of the YaST Product Registration module.

Note: Evaluation Code

Sixty day evaluation subscriptions may be requested at the following page: https://www.suse.com/products/arm/

After you have obtained a registration code from a subscription card, you need to activate your subscription on the SUSE Customer Center at:

https://scc.suse.com/

To register your subscription, perform the following steps:

1. Log in to the SUSE Customer Center using a browser on another machine. Create an account if required:

   

2. Click Manually Activate Subscriptions:

   

3. Click the dialog field Activate a single subscription:

   

4. Enter the registration code and accept the terms and conditions:

   

5. Confirm the subscription activation and the organization assignment. Click Activate:

   

6. Your subscription is now active and ready to be used:

   

To register the system, use the SUSEConnect tool as instructed earlier:

# SUSEConnect -e company@example.com -r YOUR_CODE
Registering system to SUSE Customer Center
Using E-Mail: company@example.com

Announcing system to https://scc.suse.com ...

Activating SLES 15.2 aarch64 ...
-> Adding service to system ...

Activating sle-module-basesystem 15.2 aarch64 ...
-> Adding service to system ...
-> Installing release package ...

Activating sle-module-server-applications 15.2 aarch64 ...
-> Adding service to system ...
-> Installing release package ...

Successfully registered system

This may take a few moments. Afterwards you will have access to online repositories for installing more packages, as described in Section 1.2.3, “Zypper”.

Example 2: Installing YaST #

 

Later sections may assume you have installed YaST for system configuration:

# zypper in -t pattern yast2_basis

Note: Module Availability

Your subscription gives you access to more than the above Basesystem Module and Server Applications Module. To activate additional modules, you can use the YaST Add System Extensions or Modules module.

In this section it is explained how to perform the initial system configuration for SUSE Linux Enterprise Server for Arm for the Raspberry Pi 15 SP2.

4.1 Changing the Language #

 

Follow these steps to change the default language:

1. Install the glibc-locale package:

   # zypper in glibc-locale

2. Set the language as desired:

   # localectl set-locale LANG=de_DE.UTF-8

Note: Translation Packages

Certain applications may require you to install an additional -lang package before you can see texts translated to the chosen language.

After the initial configuration procedure and the first boot of the system, you can now use various components of the system.

# SUSEConnect -p sle-module-desktop-applications/15.2/aarch64
Registering system to SUSE Customer Center

Updating system details on https://scc.suse.com ...

Activating sle-module-desktop-applications 15.2 aarch64 ...
-> Adding service to system ...
-> Installing release package ...

Successfully registered system

# zypper install -t pattern x11_raspberrypi

# zypper install bluez

# hciattach /dev/ttyAMA1 bcm43xx 921600
bcm43xx_init
Flash firmware /lib/firmware/BCM43430A1.hcd
Set Controller UART speed to 921600 bit/s
Device setup complete

This introduction only covered the most basic tasks.

6.1 Product Documentation #

 

You can find the complete documentation for SUSE Linux Enterprise Server for Arm 15 SP2 at https://documentation.suse.com/.

Note: Applicability of Product Documentation

Not all content in the product documentation applies to SUSE Linux Enterprise Server for Arm on the Raspberry Pi, because the Raspberry Pi differs significantly from other hardware platforms.

6.2 SUSE Forums #

 

A valid and activated subscription entitles you to receive bug and security fixes, feature updates, and technical assistance from SUSE's support organization. Learn more at https://www.suse.com/support/. Via the SUSE Customer Center at https://scc.suse.com/ you can open an incident.

In addition, SUSE has provided conversation forums where you can get answers to questions. Go to https://forums.suse.com/. Under the main forum category SUSE Linux Enterprise Server select the sub-forum SLES for Raspberry Pi.

Important: Forums Are Not an Official Support Channel

The SUSE forum is not an official support channel from SUSE. The individual articles or statements were contributed voluntarily by community members and users of the respective products. SUSE cannot verify either that the actions described in the articles do what they claim to do, or that they do not have unintended consequences. Therefore, neither SUSE LLC, its affiliates, nor the authors may be held liable for possible errors or the consequences thereof.

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