diff --git a/Makefile b/Makefile
index f3e4c8a..6a76c0a 100644
--- a/Makefile
+++ b/Makefile
@@ -24,9 +24,11 @@ build/convert:
 	@echo "#!`pwd`/.py3/bin/python" > build/convert
 	@echo "import yaml, json, sys" >> build/convert
 	@echo "y = yaml.load(open(sys.argv[1]))" >> build/convert
-	@echo "for k in ['ami_access','deploy_regions','add_repos','add_pkgs']:" >> build/convert
+	@echo "for k in ['ami_access','deploy_regions','add_repos','add_pkgs','add_svcs']:" >> build/convert
 	@echo "  if k in y and isinstance(y[k], list):" >> build/convert
 	@echo "    y[k] = ','.join(str(x) for x in y[k])" >> build/convert
+	@echo "  if k in y and isinstance(y[k], dict):" >> build/convert
+	@echo "    y[k] = ':'.join(str(l) + '=' + ','.join(str(s) for s in ss) for l, ss in y[k].items())" >> build/convert
 	@echo "json.dump(y, sys.stdout, indent=4, separators=(',', ': '))" >> build/convert
 	@chmod +x build/convert
 
diff --git a/alpine-ami.yaml b/alpine-ami.yaml
index 5991115..a4ba2c0 100644
--- a/alpine-ami.yaml
+++ b/alpine-ami.yaml
@@ -54,13 +54,10 @@ builders:
 
 provisioners:
   - type: "file"
-    source: "nvme-ebs-links.sh"
-    destination: "/tmp/"
-  - type: "file"
-    source: "nvme-ebs-mdev.conf"
-    destination: "/tmp/"
+    source: "nvme/"
+    destination: "/tmp"
   - type: "shell"
     script: "make_ami.sh"
     environment_vars:
       - "ALPINE_RELEASE={{user `alpine_release`}}"
-    execute_command: 'sudo sh -c "{{ .Vars }} {{ .Path }} ''{{user `add_repos`}}'' ''{{user `add_pkgs`}}''"'
+    execute_command: 'sudo sh -c "{{ .Vars }} {{ .Path }} ''{{user `add_repos`}}'' ''{{user `add_pkgs`}}'' ''{{user `add_svcs`}}''"'
diff --git a/make_ami.sh b/make_ami.sh
index b5097ab..c8dde78 100755
--- a/make_ami.sh
+++ b/make_ami.sh
@@ -157,7 +157,7 @@ install_core_packages() {
 setup_mdev() {
     local target="$1"
 
-    cp -a /tmp/nvme-ebs-links.sh "$target"/lib/mdev
+    cp /tmp/nvme-ebs-links "$target"/lib/mdev
     sed -n -i -e '/# fallback/r /tmp/nvme-ebs-mdev.conf' -e 1x -e '2,${x;p}' -e '${x;p}' "$target"/etc/mdev.conf
 }
 
@@ -229,11 +229,18 @@ EOF
 
 enable_services() {
     local target="$1"
+    local add_svcs="$2"
 
     rc_add "$target" default sshd chronyd networking tiny-ec2-bootstrap
     rc_add "$target" sysinit devfs dmesg mdev hwdrivers
     rc_add "$target" boot modules hwclock swap hostname sysctl bootmisc syslog acpid
     rc_add "$target" shutdown killprocs savecache mount-ro
+
+    if [ -n "$add_svcs" ]; then
+        local lvl_svcs; for lvl_svcs in $(echo "$add_svcs" | tr : ' '); do
+            rc_add "$target" $(echo "$lvl_svcs" | tr =, ' ')
+        done
+    fi
 }
 
 create_alpine_user() {
@@ -295,13 +302,14 @@ version_sorted() {
 }
 
 main() {
-    [ "$#" -ne 2 ] && die "Expecting two parameters\nUsage: $0 '<repo>[,<repo>]' '<pkg>[,<pkg>]'"
+    [ "$#" -ne 3 ] && die "Expecting three parameters\nUsage: $0 '[<repo>[,...]]' '[<pkg>[,...]]' '[<lvl>=<svc>[,...][:...]]'"
     [ "$ALPINE_RELEASE" != 'edge' ] && {
         version_sorted $MIN_RELEASE $ALPINE_RELEASE || die "Minimum alpine_release is '$MIN_RELEASE'"
     }
 
     local add_repos="$1"
     local add_pkgs="$2"
+    local add_svcs="$3"
 
     local device="/dev/xvdf"
     local target="/mnt/target"
@@ -316,6 +324,7 @@ main() {
     einfo "Creating root filesystem"
     make_filesystem "$device" "$target"
 
+    einfo "Configuring Alpine repositories"
     setup_repositories "$target" "$add_repos"
 
     einfo "Fetching Alpine signing keys"
@@ -338,7 +347,7 @@ main() {
     setup_mdev "$target"
     setup_fstab "$target"
     setup_networking "$target"
-    enable_services "$target"
+    enable_services "$target" "$add_svcs"
     create_alpine_user "$target"
     configure_ntp "$target"
 
diff --git a/nvme-ebs-links.sh b/nvme-ebs-links.sh
deleted file mode 100755
index ca8c4f6..0000000
--- a/nvme-ebs-links.sh
+++ /dev/null
@@ -1,20 +0,0 @@
-#!/bin/sh
-
-[ -x /usr/sbin/nvme ] || exit
-
-case $ACTION in
-  add|"")
-    BASE=$(echo $MDEV | sed -re 's/^(nvme[0-9]+n[0-9]+).*/\1/')
-    PART=$(echo $MDEV | sed -re 's/nvme[0-9]+n[0-9]+p?//g')
-    EBS=$(/usr/sbin/nvme id-ctrl "/dev/$BASE" -b 2>/dev/null | dd bs=32 skip=96 count=1 2>/dev/null | tr -d ' ')
-    EBS=${EBS#/dev/}$PART
-    ln -sf $MDEV ${EBS/xvd/sd}
-    ln -sf $MDEV ${EBS/sd/xvd}
-    ;;
-  remove)
-    for TARGET in sd* xvd*
-    do
-      [ "$(readlink $TARGET 2>/dev/null)" = $MDEV ] && rm -f $TARGET
-    done
-    ;;
-esac
diff --git a/nvme-ebs-mdev.conf b/nvme-ebs-mdev.conf
deleted file mode 100644
index 2d60927..0000000
--- a/nvme-ebs-mdev.conf
+++ /dev/null
@@ -1,3 +0,0 @@
-# ebs nvme links
-nvme[0-9]+n[0-9]+.*	root:root 0660 */lib/mdev/nvme-ebs-links.sh
-
diff --git a/nvme/nvme-ebs-links b/nvme/nvme-ebs-links
new file mode 100755
index 0000000..c197a73
--- /dev/null
+++ b/nvme/nvme-ebs-links
@@ -0,0 +1,22 @@
+#!/bin/sh
+
+[ -x /usr/sbin/nvme ] || exit
+
+case $ACTION in
+  add|"")
+    BASE=$(echo $MDEV | sed -re 's/^(nvme[0-9]+n[0-9]+).*/\1/')
+    PART=$(echo $MDEV | sed -re 's/nvme[0-9]+n[0-9]+p?//g')
+    until [ -n "$EBS" ]; do
+      EBS=$(/usr/sbin/nvme id-ctrl "/dev/$BASE" -b 2>/dev/null | dd bs=32 skip=96 count=1 2>/dev/null | tr -d ' ')
+    done
+    EBS=${EBS#/dev/}$PART
+    ln -sf "$MDEV" "${EBS/xvd/sd}"
+    ln -sf "$MDEV" "${EBS/sd/xvd}"
+    ;;
+  remove)
+    for TARGET in sd* xvd*
+    do
+      [ "$(readlink $TARGET 2>/dev/null)" = "$MDEV" ] && rm -f "$TARGET"
+    done
+    ;;
+esac
diff --git a/nvme/nvme-ebs-mdev.conf b/nvme/nvme-ebs-mdev.conf
new file mode 100644
index 0000000..c30b6fd
--- /dev/null
+++ b/nvme/nvme-ebs-mdev.conf
@@ -0,0 +1,3 @@
+# ebs nvme links
+nvme[0-9]+n[0-9]+.*	root:root 0660 */lib/mdev/nvme-ebs-links
+
diff --git a/variables.yaml-default b/variables.yaml-default
index 668233a..d9dff95 100644
--- a/variables.yaml-default
+++ b/variables.yaml-default
@@ -36,6 +36,13 @@ add_repos:
 # List of additional packages to add to the AMI.
 add_pkgs:
 
+# Additional services to start at the specified level.
+add_svcs:
+#  boot:
+#    - service1
+#  default:
+#    - service2
+
 # Size of the AMI image (in GiB).
 volume_size: "1"
 
@@ -55,6 +62,7 @@ deploy_regions:
   - "us-west-2"
   - "ca-central-1"
   - "eu-central-1"
+  - "eu-north-1"
   - "eu-west-1"
   - "eu-west-2"
   - "eu-west-3"