Architectures/AArch64/FoundationModelQuickStart

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Aarch64 Quickstart Guide

This page will help those new to aarch64(armv8) get started with the Foundation Model provided by ARM. There are a number of options available when using the model, including use of a disk image file or NFS root filesystem, as well as a choice of kernel if you would like to use Systemd or Busybox as the init process.

Download the Foundation Model

The first step will be to download the Foundation model from ARM. The model is not redistributable and will therefor require you to create a free account with ARM. Once completed you will be able to download the Foundation Model and begin.

• The Foundation Model

To run the model you may need to install some additional software with the following command:

sudo yum install xterm xorg-x11-fonts-{misc,100dpi,75dpi}* telnet bridge-utils

Extract the Foundation Model

Once you have downloaded the model, you will need to set up your environment. The model can extracted to a path of your choosing, in this example we will use your home directory. Unpack the model:

mkdir ~/aarch64
cd ~/aarch64
tar xvzf FM000-KT-00035-r0p8-44rel23.tgz

Using the Model with an Image

Using the commands below, download and extract the Aarch64 root filesystem disk image. The disk image will extract to roughly 12GB in size and may take several minutes to unpack depending on your hardware.

cd ~/aarch64
wget http://fedorapeople.org/~pwhalen/aarch64/stage4-root-20130725.img.tar.bz2
tar xvjf stage4-root-20130725.img.tar.bz2

Kernel Packages

The Foundation model seems to have some performance issues when using a serial console, there are two kernel packages to choose from - one that includes the console, the other does not and is intended for use by connecting through ssh. The kernels use the wrapper to set the hostname and networking. For example 'systemd-3.9-image-2G-1.axf' will set a hostname of 'model-1' with and IP address of 10.0.1.2, the default gw should be set to 10.0.1.1. The last number in the kernel name indicates which network, hostname will be used when it boots.

• With console:

wget http://fedorapeople.org/~pwhalen/aarch64/systemd-3.9-image-2G.tar.bz2
tar xvjf systemd-3.9-image-2G.tar.bz2

• No console:

wget http://fedorapeople.org/~pwhalen/aarch64/systemd-3.9-image-ns-2G.tar.bz2
tar xvjf systemd-3.9-image-ns-2G.tar.bz2

Starting the Model

NOTE: You may need to adjust your path for the model depending on the version in use.

• With console:

sudo Foundation_v8pkg/models/Linux64_GCC-4.1/Foundation_v8 \
		--image systemd-3.9-image-2G/systemd-3.9-image-2G-1.axf \
		--network=bridged \
		--network-bridge=ARM1 \
		--block-device stage4-root-20130725.img  

• No console:

sudo Foundation_v8pkg/models/Linux64_GCC-4.1/Foundation_v8 \
		--image systemd-3.9-image-ns-2G/systemd-3.9-image-ns-2G-1.axf \
		--network=bridged \
		--network-bridge=ARM1 \
		--block-device stage4-root-20130725.img  

On the host immediately after launching the model:

sudo ifconfig ARM1 10.0.1.1 netmask 255.255.255.0

You should now be able to ssh to the model once it has fully booted. If you're using the console enabled kernels you can use telnet to connect to the serial console using the provided ports as it boots, this will also close the xterm popup window.

• For console:

telnet 10.0.1.1 5003 # note this is the IP of the gateway and not the model

The port number seems to be inconsistent and can vary depending on how quickly you attempt to connect, but is usually the last listed port.

• No console (also works on console)

ssh root@10.0.1.2 # note this is the IP address of the model

The root password is 'fedora', there is also another account called 'builder' password 'builder'.

Using the model with an NFS root

Using the model through an NFS root is no longer recommended or supported here.

Allowing the Model to Connect to the Internet

On the host:

• Enable IP forwarding (as root)

echo 1 > /proc/sys/net/ipv4/ip_forward

• Set up Network Address Translation:

HOSTEXTERNAL=eth0 # Replace this with your outside interface
sudo iptables -t nat -I POSTROUTING -o $HOSTEXTERNAL -j MASQUERADE
sudo iptables -I FORWARD -i $HOSTEXTERNAL -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
sudo iptables -I FORWARD -i ARM1 -o $HOSTEXTERNAL -j ACCEPT

• Firewall trouble? Try this:

sudo iptables -I INPUT -i ARM1 -j ACCEPT

The model uses Google's Public DNS server (8.8.8.8) for name resolution (/etc/resolv.conf).

Fixing build failures

If you want to debug a broken package, please visit the problem package list, follow the directions and claim the packages of your choice.

Notes

• When using the model with a kernel that provides a serial console you may see intermittent 'ttyAMA0: 1 input overrun(s)'.
• Intermittent networking issues with 'partial' file downloads.