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Debian rootfs

This paper describes procedure of creating a Debian rootfs for nfs server.

Requirements

  1. Installed debootstrap package:
sudo apt-get install -y debootstrap
  1. ~1GB free disk space.

Creating base system

Choose a directory where the rootfs should be created, for example:

mkdir debian-rootfs

To create the base system run following command:

sudo debootstrap --foreign --arch <arch> <distro> debian-rootfs http://deb.debian.org/debian

For example:

sudo debootstrap --foreign --arch amd64 stretch debian-rootfs http://deb.debian.org/debian

Debootstrap must be run as super user in order to create files with correct permissions etc. The command above will create basic file system and directories and files. debootstrap has also a second stage which must be run inside chroot. In order to finish creating filesystem run following command:

sudo chroot debian-rootfs
/debootstrap/debootstrap --second-stage --verbose

The creation of basic filesystem is done if there were no errors till now.

Customizing created system

After debootstrapping the filesystem needs some configuration to satisfy the needs. It is necessary to set up network interfaces, mounts and a root password.

Setting up network interfaces (inside chroot):

cat >> /etc/network/interfaces << EOF
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet dhcp
EOF

Setting up mounts (inside chroot):

cat > /etc/fstab << EOF
/proc    /proc    proc    defaults   0 0
/sys     /sys     sysfs   defaults   0 0
EOF

Set root password (inside chroot):

passwd

Package configuration

Probably You will want to install some packages, You can do it now inside chroot by running:

apt-get install -y <package1> <package2> ...

or just boot the system with PXE and run it on target machine.

There is a guide how to setup pxe-server here, but it is customized for APU2.

Packages for APU2

Install basic packages necessary for developer use (compiling from source, coreboot etc.):

apt-get install -y nfs-common locales \
    sudo bc ssh ntpdate gettext \
    autoconf wpasupplicant dialog \
    makedev binutils apt-utils \
    git vim tmux python \
    ca-certificates \
    python-dev ntpdate \
    build-essential \
    iasl \
    m4 \
    flex \
    bison \
    gdb \
    doxygen \
    ncurses-dev \
    cmake \
    make \
    g++ \
    gcc-multilib \
    wget \
    liblzma-dev \
    zlib1g-dev

You don't have to install them all if don't plan to do something big. Choose only the packages You will need.

For flashrom compilation these packages are necessary:

apt-get install -y libpci-dev libusb-dev \
    libusb-1.0-0-dev libftdi-dev