diff --git a/build-cd-image b/build-cd-image
new file mode 100755
index 0000000..bac3cf3
--- /dev/null
+++ b/build-cd-image
@@ -0,0 +1,44 @@
+#!/bin/bash
+
+[ $# != 2 ] && echo missing parameters && exit 1
+
+out=tmp/cd
+grubcfg=$out/boot/grub/grub.cfg
+
+mkdir $out
+bsdtar -C $out -xf $1
+
+if [ -d $out/install.a64 ]; then
+   # Debian
+   kpath=/install.a64
+   kname=vmlinuz
+elif [ -d $out/install ] ; then
+   # Ubuntu (new)
+   kpath=/install
+   kname=vmlinuz
+else
+   # Ubuntu
+   kpath=""
+   kname=linux
+fi
+
+cp preseed.cfg $out/
+chmod u+w $grubcfg
+cat <<EOF >>$grubcfg
+menuentry 'Install preseeded' --id preseed {
+    set background_color=black
+    linux    $kpath/$kname auto=true priority=critical file=/cdrom/preseed.cfg --- quiet
+    initrd   $kpath/initrd.gz
+}
+
+default=preseed
+timeout=5
+EOF
+
+xorriso -as mkisofs -V 'Debian stretch-DI-seed arm64 1'      \
+	-r -o $2 -J -joliet-long -cache-inodes       	     \
+	-efi-boot-part --efi-boot-image      		     \
+	-e boot/grub/efi.img -no-emul-boot $out
+
+chmod -R a+rw $out
+rm -rf $out
diff --git a/preseed.cfg b/preseed.cfg
new file mode 100644
index 0000000..c62d550
--- /dev/null
+++ b/preseed.cfg
@@ -0,0 +1,429 @@
+#### Contents of the preconfiguration file (for stretch)
+### Localization
+# Preseeding only locale sets language, country and locale.
+d-i debian-installer/locale string en_US
+
+# The values can also be preseeded individually for greater flexibility.
+#d-i debian-installer/language string en
+#d-i debian-installer/country string NL
+#d-i debian-installer/locale string en_GB.UTF-8
+# Optionally specify additional locales to be generated.
+#d-i localechooser/supported-locales multiselect en_US.UTF-8, nl_NL.UTF-8
+
+# Keyboard selection.
+d-i keyboard-configuration/xkb-keymap select us
+# d-i keyboard-configuration/toggle select No toggling
+
+### Network configuration
+# Disable network configuration entirely. This is useful for cdrom
+# installations on non-networked devices where the network questions,
+# warning and long timeouts are a nuisance.
+#d-i netcfg/enable boolean false
+
+# netcfg will choose an interface that has link if possible. This makes it
+# skip displaying a list if there is more than one interface.
+d-i netcfg/choose_interface select auto
+
+# To pick a particular interface instead:
+#d-i netcfg/choose_interface select eth1
+
+# To set a different link detection timeout (default is 3 seconds).
+# Values are interpreted as seconds.
+#d-i netcfg/link_wait_timeout string 10
+
+# If you have a slow dhcp server and the installer times out waiting for
+# it, this might be useful.
+#d-i netcfg/dhcp_timeout string 60
+#d-i netcfg/dhcpv6_timeout string 60
+
+# If you prefer to configure the network manually, uncomment this line and
+# the static network configuration below.
+#d-i netcfg/disable_autoconfig boolean true
+
+# If you want the preconfiguration file to work on systems both with and
+# without a dhcp server, uncomment these lines and the static network
+# configuration below.
+#d-i netcfg/dhcp_failed note
+#d-i netcfg/dhcp_options select Configure network manually
+
+# Static network configuration.
+#
+# IPv4 example
+#d-i netcfg/get_ipaddress string 192.168.1.42
+#d-i netcfg/get_netmask string 255.255.255.0
+#d-i netcfg/get_gateway string 192.168.1.1
+#d-i netcfg/get_nameservers string 192.168.1.1
+#d-i netcfg/confirm_static boolean true
+#
+# IPv6 example
+#d-i netcfg/get_ipaddress string fc00::2
+#d-i netcfg/get_netmask string ffff:ffff:ffff:ffff::
+#d-i netcfg/get_gateway string fc00::1
+#d-i netcfg/get_nameservers string fc00::1
+#d-i netcfg/confirm_static boolean true
+
+# Any hostname and domain names assigned from dhcp take precedence over
+# values set here. However, setting the values still prevents the questions
+# from being shown, even if values come from dhcp.
+d-i netcfg/get_hostname string unassigned-hostname
+d-i netcfg/get_domain string unassigned-domain
+
+# If you want to force a hostname, regardless of what either the DHCP
+# server returns or what the reverse DNS entry for the IP is, uncomment
+# and adjust the following line.
+#d-i netcfg/hostname string somehost
+
+# Disable that annoying WEP key dialog.
+d-i netcfg/wireless_wep string
+# The wacky dhcp hostname that some ISPs use as a password of sorts.
+#d-i netcfg/dhcp_hostname string radish
+
+# If non-free firmware is needed for the network or other hardware, you can
+# configure the installer to always try to load it, without prompting. Or
+# change to false to disable asking.
+#d-i hw-detect/load_firmware boolean true
+
+### Network console
+# Use the following settings if you wish to make use of the network-console
+# component for remote installation over SSH. This only makes sense if you
+# intend to perform the remainder of the installation manually.
+#d-i anna/choose_modules string network-console
+#d-i network-console/authorized_keys_url string http://10.0.0.1/openssh-key
+#d-i network-console/password password r00tme
+#d-i network-console/password-again password r00tme
+
+### Mirror settings
+d-i apt-setup/no_mirror boolean true
+# If you select ftp, the mirror/country string does not need to be set.
+#d-i mirror/protocol string ftp
+#d-i mirror/country string manual
+#d-i mirror/http/hostname string http.us.debian.org
+#d-i mirror/http/directory string /debian
+#d-i mirror/http/proxy string
+
+# Suite to install.
+#d-i mirror/suite string testing
+# Suite to use for loading installer components (optional).
+#d-i mirror/udeb/suite string testing
+
+### Account setup
+# Skip creation of a root account (normal user account will be able to
+# use sudo).
+d-i passwd/root-login boolean true
+# Alternatively, to skip creation of a normal user account.
+#d-i passwd/make-user boolean false
+
+# Root password, either in clear text
+d-i passwd/root-password password root
+d-i passwd/root-password-again password root
+# or encrypted using a crypt(3)  hash.
+#d-i passwd/root-password-crypted password [crypt(3) hash]
+
+# To create a normal user account.
+d-i passwd/user-fullname string Debian User
+d-i passwd/username string debian
+# Normal user's password, either in clear text
+d-i passwd/user-password password insecure
+d-i passwd/user-password-again password insecure
+# or encrypted using a crypt(3) hash.
+#d-i passwd/user-password-crypted password [crypt(3) hash]
+# Create the first user with the specified UID instead of the default.
+#d-i passwd/user-uid string 1010
+d-i user-setup/allow-password-weak boolean true
+
+# The user account will be added to some standard initial groups. To
+# override that, use this.
+#d-i passwd/user-default-groups string audio cdrom video
+
+### Clock and time zone setup
+# Controls whether or not the hardware clock is set to UTC.
+d-i clock-setup/utc boolean true
+
+# You may set this to any valid setting for $TZ; see the contents of
+# /usr/share/zoneinfo/ for valid values.
+d-i time/zone string US/Eastern
+
+# Controls whether to use NTP to set the clock during the install
+d-i clock-setup/ntp boolean false
+# NTP server to use. The default is almost always fine here.
+#d-i clock-setup/ntp-server string ntp.example.com
+
+### Partitioning
+## Partitioning example
+# If the system has free space you can choose to only partition that space.
+# This is only honoured if partman-auto/method (below) is not set.
+d-i partman-auto/init_automatically_partition select biggest_free
+
+# Alternatively, you may specify a disk to partition. If the system has only
+# one disk the installer will default to using that, but otherwise the device
+# name must be given in traditional, non-devfs format (so e.g. /dev/sda
+# and not e.g. /dev/discs/disc0/disc).
+# For example, to use the first SCSI/SATA hard disk:
+d-i partman-auto/disk string /dev/vda
+# In addition, you'll need to specify the method to use.
+# The presently available methods are:
+# - regular: use the usual partition types for your architecture
+# - lvm:     use LVM to partition the disk
+# - crypto:  use LVM within an encrypted partition
+d-i partman-auto/method string regular
+
+# If one of the disks that are going to be automatically partitioned
+# contains an old LVM configuration, the user will normally receive a
+# warning. This can be preseeded away...
+d-i partman-lvm/device_remove_lvm boolean true
+# The same applies to pre-existing software RAID array:
+d-i partman-md/device_remove_md boolean true
+# And the same goes for the confirmation to write the lvm partitions.
+d-i partman-lvm/confirm boolean true
+d-i partman-lvm/confirm_nooverwrite boolean true
+
+# You can choose one of the three predefined partitioning recipes:
+# - atomic: all files in one partition
+# - home:   separate /home partition
+# - multi:  separate /home, /var, and /tmp partitions
+d-i partman-auto/choose_recipe select atomic
+
+# Or provide a recipe of your own...
+# If you have a way to get a recipe file into the d-i environment, you can
+# just point at it.
+#d-i partman-auto/expert_recipe_file string /hd-media/recipe
+
+# If not, you can put an entire recipe into the preconfiguration file in one
+# (logical) line. This example creates a small /boot partition, suitable
+# swap, and uses the rest of the space for the root partition:
+#d-i partman-auto/expert_recipe string                         \
+#      boot-root ::                                            \
+#              40 50 100 ext3                                  \
+#                      $primary{ } $bootable{ }                \
+#                      method{ format } format{ }              \
+#                      use_filesystem{ } filesystem{ ext3 }    \
+#                      mountpoint{ /boot }                     \
+#              .                                               \
+#              500 10000 1000000000 ext3                       \
+#                      method{ format } format{ }              \
+#                      use_filesystem{ } filesystem{ ext3 }    \
+#                      mountpoint{ / }                         \
+#              .                                               \
+#              64 512 300% linux-swap                          \
+#                      method{ swap } format{ }                \
+#              .
+
+# The full recipe format is documented in the file partman-auto-recipe.txt
+# included in the 'debian-installer' package or available from D-I source
+# repository. This also documents how to specify settings such as file
+# system labels, volume group names and which physical devices to include
+# in a volume group.
+
+# This makes partman automatically partition without confirmation, provided
+# that you told it what to do using one of the methods above.
+d-i partman-partitioning/confirm_write_new_label boolean true
+d-i partman/choose_partition select finish
+d-i partman/confirm boolean true
+d-i partman/confirm_nooverwrite boolean true
+
+## Partitioning using RAID
+# The method should be set to "raid".
+#d-i partman-auto/method string raid
+# Specify the disks to be partitioned. They will all get the same layout,
+# so this will only work if the disks are the same size.
+#d-i partman-auto/disk string /dev/sda /dev/sdb
+
+# Next you need to specify the physical partitions that will be used. 
+#d-i partman-auto/expert_recipe string \
+#      multiraid ::                                         \
+#              1000 5000 4000 raid                          \
+#                      $primary{ } method{ raid }           \
+#              .                                            \
+#              64 512 300% raid                             \
+#                      method{ raid }                       \
+#              .                                            \
+#              500 10000 1000000000 raid                    \
+#                      method{ raid }                       \
+#              .
+
+# Last you need to specify how the previously defined partitions will be
+# used in the RAID setup. Remember to use the correct partition numbers
+# for logical partitions. RAID levels 0, 1, 5, 6 and 10 are supported;
+# devices are separated using "#".
+# Parameters are:
+# <raidtype> <devcount> <sparecount> <fstype> <mountpoint> \
+#          <devices> <sparedevices>
+
+#d-i partman-auto-raid/recipe string \
+#    1 2 0 ext3 /                    \
+#          /dev/sda1#/dev/sdb1       \
+#    .                               \
+#    1 2 0 swap -                    \
+#          /dev/sda5#/dev/sdb5       \
+#    .                               \
+#    0 2 0 ext3 /home                \
+#          /dev/sda6#/dev/sdb6       \
+#    .
+
+# For additional information see the file partman-auto-raid-recipe.txt
+# included in the 'debian-installer' package or available from D-I source
+# repository.
+
+# This makes partman automatically partition without confirmation.
+d-i partman-md/confirm boolean true
+d-i partman-partitioning/confirm_write_new_label boolean true
+d-i partman/choose_partition select finish
+d-i partman/confirm boolean true
+d-i partman/confirm_nooverwrite boolean true
+
+## Controlling how partitions are mounted
+# The default is to mount by UUID, but you can also choose "traditional" to
+# use traditional device names, or "label" to try filesystem labels before
+# falling back to UUIDs.
+#d-i partman/mount_style select uuid
+
+### Base system installation
+# Configure APT to not install recommended packages by default. Use of this
+# option can result in an incomplete system and should only be used by very
+# experienced users.
+#d-i base-installer/install-recommends boolean false
+
+# The kernel image (meta) package to be installed; "none" can be used if no
+# kernel is to be installed.
+#d-i base-installer/kernel/image string linux-image-686
+
+### Apt setup
+# You can choose to install non-free and contrib software.
+#d-i apt-setup/non-free boolean true
+#d-i apt-setup/contrib boolean true
+# Uncomment this if you don't want to use a network mirror.
+#d-i apt-setup/use_mirror boolean false
+# Select which update services to use; define the mirrors to be used.
+# Values shown below are the normal defaults.
+#d-i apt-setup/services-select multiselect security, updates
+#d-i apt-setup/security_host string security.debian.org
+
+# Additional repositories, local[0-9] available
+#d-i apt-setup/local0/repository string \
+#       http://local.server/debian stable main
+#d-i apt-setup/local0/comment string local server
+# Enable deb-src lines
+#d-i apt-setup/local0/source boolean true
+# URL to the public key of the local repository; you must provide a key or
+# apt will complain about the unauthenticated repository and so the
+# sources.list line will be left commented out
+#d-i apt-setup/local0/key string http://local.server/key
+
+# By default the installer requires that repositories be authenticated
+# using a known gpg key. This setting can be used to disable that
+# authentication. Warning: Insecure, not recommended.
+#d-i debian-installer/allow_unauthenticated boolean true
+
+# Uncomment this to add multiarch configuration for i386
+#d-i apt-setup/multiarch string i386
+
+
+### Package selection
+#tasksel tasksel/first multiselect standard, web-server, kde-desktop
+
+# Individual additional packages to install
+d-i pkgsel/include string openssh-server build-essential
+# Whether to upgrade packages after debootstrap.
+# Allowed values: none, safe-upgrade, full-upgrade
+d-i pkgsel/upgrade select full-upgrade
+
+# Some versions of the installer can report back on what software you have
+# installed, and what software you use. The default is not to report back,
+# but sending reports helps the project determine what software is most
+# popular and include it on CDs.
+#popularity-contest popularity-contest/participate boolean false
+
+### Boot loader installation
+# Grub is the default boot loader (for x86). If you want lilo installed
+# instead, uncomment this:
+#d-i grub-installer/skip boolean true
+# To also skip installing lilo, and install no bootloader, uncomment this
+# too:
+#d-i lilo-installer/skip boolean true
+
+
+# This is fairly safe to set, it makes grub install automatically to the MBR
+# if no other operating system is detected on the machine.
+d-i grub-installer/only_debian boolean true
+
+# This one makes grub-installer install to the MBR if it also finds some other
+# OS, which is less safe as it might not be able to boot that other OS.
+d-i grub-installer/with_other_os boolean true
+
+# Due notably to potential USB sticks, the location of the MBR can not be
+# determined safely in general, so this needs to be specified:
+#d-i grub-installer/bootdev  string /dev/sda
+# To install to the first device (assuming it is not a USB stick):
+#d-i grub-installer/bootdev  string default
+
+# Alternatively, if you want to install to a location other than the mbr,
+# uncomment and edit these lines:
+#d-i grub-installer/only_debian boolean false
+#d-i grub-installer/with_other_os boolean false
+#d-i grub-installer/bootdev  string (hd0,1)
+# To install grub to multiple disks:
+#d-i grub-installer/bootdev  string (hd0,1) (hd1,1) (hd2,1)
+
+# Optional password for grub, either in clear text
+#d-i grub-installer/password password r00tme
+#d-i grub-installer/password-again password r00tme
+# or encrypted using an MD5 hash, see grub-md5-crypt(8).
+#d-i grub-installer/password-crypted password [MD5 hash]
+
+# Use the following option to add additional boot parameters for the
+# installed system (if supported by the bootloader installer).
+# Note: options passed to the installer will be added automatically.
+#d-i debian-installer/add-kernel-opts string nousb
+
+### Finishing up the installation
+# During installations from serial console, the regular virtual consoles
+# (VT1-VT6) are normally disabled in /etc/inittab. Uncomment the next
+# line to prevent this.
+#d-i finish-install/keep-consoles boolean true
+
+# Avoid that last message about the install being complete.
+d-i finish-install/reboot_in_progress note
+
+# This will prevent the installer from ejecting the CD during the reboot,
+# which is useful in some situations.
+#d-i cdrom-detect/eject boolean false
+
+# This is how to make the installer shutdown when finished, but not
+# reboot into the installed system.
+#d-i debian-installer/exit/halt boolean true
+# This will power off the machine instead of just halting it.
+#d-i debian-installer/exit/poweroff boolean true
+
+### Preseeding other packages
+# Depending on what software you choose to install, or if things go wrong
+# during the installation process, it's possible that other questions may
+# be asked. You can preseed those too, of course. To get a list of every
+# possible question that could be asked during an install, do an
+# installation, and then run these commands:
+#   debconf-get-selections --installer > file
+#   debconf-get-selections >> file
+
+
+#### Advanced options
+### Running custom commands during the installation
+# d-i preseeding is inherently not secure. Nothing in the installer checks
+# for attempts at buffer overflows or other exploits of the values of a
+# preconfiguration file like this one. Only use preconfiguration files from
+# trusted locations! To drive that home, and because it's generally useful,
+# here's a way to run any shell command you'd like inside the installer,
+# automatically.
+
+# This first command is run as early as possible, just after
+# preseeding is read.
+#d-i preseed/early_command string anna-install some-udeb
+# This command is run immediately before the partitioner starts. It may be
+# useful to apply dynamic partitioner preseeding that depends on the state
+# of the disks (which may not be visible when preseed/early_command runs).
+#d-i partman/early_command \
+#       string debconf-set partman-auto/disk "$(list-devices disk | head -n1)"
+# This command is run just before the install finishes, but when there is
+# still a usable /target directory. You can chroot to /target and use it
+# directly, or use the apt-install and in-target commands to easily install
+# packages and run commands in the target system.
+#d-i preseed/late_command string apt-install zsh; in-target chsh -s /bin/zsh
+
diff --git a/runefivm.sh b/runefivm.sh
new file mode 100755
index 0000000..0fbc096
--- /dev/null
+++ b/runefivm.sh
@@ -0,0 +1,106 @@
+#!/bin/bash
+
+efi=${EFI-/usr/share/AAVMF/AAVMF_CODE.fd}
+efivar=${EFIVAR-/home/maz/disk-images/stretch-arm64-efi-vars.fd}
+disk=${DISK-/home/maz/disk-images/stretch-arm64.img}
+bus=${BUS-pci}
+netif=${NETIF}
+gic=${GIC-host}
+bit=${BIT-64}
+cpus=${CPUS-4}
+ram=${RAM-1G}
+cdrom=${CDROM-nocdimage}
+qemu=${QEMU-/usr/bin/qemu-system-aarch64}
+
+if [ "$bit" = 64 ]; then
+	sf=on
+else
+	sf=off
+fi
+
+qvers=$(qemu-system-aarch64 --version| cut -f4 -d' ' | cut -f1,2 -d.)
+qversmaj=$(echo $qvers | cut -f1 -d.)
+qversmin=$(echo $qvers | cut -f2 -d.)
+
+# Disable virtio legacy if < 2.7
+if [ $qversmaj -eq 2 -a $qversmin -ge 7 ]; then
+    if [ $bus = pci ]; then
+	virtio=",disable-legacy=on"
+    fi
+fi
+
+if [ "$cdrom" != nocdimage ]; then
+	cddev="-drive file=$cdrom,id=cdrom,if=none,media=cdrom	\
+	       -device virtio-scsi-$bus$virtio			\
+	       -device scsi-cd,drive=cdrom"
+fi
+
+if [ -z "$netif" -o $bus != pci ]; then
+
+	netdev="-netdev user,id=hostnet0 -device virtio-net-$bus$virtio,netdev=hostnet0"
+
+elif [ -e /dev/tap$(< /sys/class/net/$netif/ifindex) ]; then
+
+	addr=$(< /sys/class/net/$netif/address)
+	tap=/dev/tap$(< /sys/class/net/$netif/ifindex)
+	mq=$((`ls -1 /sys/class/net/$netif/queues/ | wc -l ` / 2))
+	tapfd=128
+
+	tapfds="$(($tapfd))"
+	tapredir="$(($tapfd))<>$tap"
+	vhfds="$(($tapfd+$mq))"
+	vhredir="$(($tapfd+$mq))<>/dev/vhost-net"
+
+	for i in `seq 1 $(($mq-1))`
+	do
+		tapfds+=":$((i+$tapfd))"
+		tapredir+=" $((i+$tapfd))<>$tap"
+		vhfds+=":$((i+$tapfd+$mq))"
+		vhredir+=" $((i+$tapfd+$mq))<>/dev/vhost-net"
+	done
+
+	netdev="-netdev tap,fds=$tapfds,id=hostnet0,vhost=on,vhostfds=$vhfds \
+		-device virtio-net-$bus$virtio,mac=$addr,netdev=hostnet0,mq=on,vectors=$((2*$mq+2))"
+
+else
+	mq=$((`ls -1 /sys/class/net/$netif/queues/ | wc -l ` / 2))
+	mq=4
+	vectors="mq=on,vectors=$((2*$mq+2))"
+	suffix=`echo $disk | md5sum | sed -e 's/^\(..\)\(..\)\(..\)\(.*\)/\1:\2:\3/'`
+	netdev="-netdev tap,vhost=on,queues=$mq,id=hostnet0,ifname=$netif,script=no,downscript=no \
+		-device virtio-net-$bus$virtio,netdev=hostnet0,mac=5a:fe:00:$suffix,$vectors"
+fi
+
+args="  -m 1024 -smp $cpus -cpu host,aarch64=$sf -machine virt,accel=kvm,gic_version=$gic \
+	-nographic \
+	-drive if=pflash,format=raw,readonly,file=$efi \
+	-drive if=pflash,format=raw,file=$efivar \
+	$netdev \
+	-drive if=none,format=raw,file=$disk,id=disk0 \
+	-device virtio-blk-$bus$virtio,drive=disk0 \
+	$cddev \
+	$* \
+	$tapredir $vhredir \
+"
+
+dtb=`mktemp -p tmp --suffix=.dtb`
+dts=`mktemp -p tmp --suffix=.dts`
+
+dtc -q -I fs /sys/firmware/devicetree/base/ | grep fsl,erratum-a008585 && (
+echo Enabling erratum for fsl,erratum-a008585
+
+eval "$qemu -machine dumpdtb=$dtb $args"
+dtc -I dtb $dtb > $dts
+
+cat <<EOF >>$dts
+&{/timer} {
+	fsl,erratum-a008585;
+};
+EOF
+
+dtc -I dts -O dtb -o $dtb $dts
+) && forcedtb="-dtb $dtb"
+
+rm $dts
+eval "$qemu $forcedtb $args"
+rm $dtb
diff --git a/runinstallvm.sh b/runinstallvm.sh
new file mode 100755
index 0000000..9616b7d
--- /dev/null
+++ b/runinstallvm.sh
@@ -0,0 +1,14 @@
+#!/bin/bash
+
+export DISK=$(mktemp -p tmp -t XXXXXXXXXXXXXXXX.img)
+export EFIVAR=tmp/$(basename $DISK .img).fd
+bus=${BUS-pci}
+
+truncate -s 16G $DISK
+truncate -s 64M $EFIVAR
+
+./runefivm.sh $*
+
+if [ -z "$KEEPME" ]; then
+    rm -f $DISK $EFIVAR
+fi