Fedora 19. Units

$ cat /usr/lib/systemd/system/plymouth-start.service
[Unit]
Description=Show Plymouth Boot Screen
DefaultDependencies=no
Wants=systemd-ask-password-plymouth.path systemd-vconsole-setup.service
After=systemd-vconsole-setup.service systemd-udev-trigger.service
Before=systemd-ask-password-plymouth.service
ConditionKernelCommandLine=!plymouth.enable=0

[Service]
ExecStart=/usr/sbin/plymouthd --mode=boot --pid-file=/var/run/plymouth/pid --attach-to-session
ExecStartPost=-/bin/udevadm settle --timeout=30 --exit-if-exists=/sys/class/drm/card0/dev ; /bin/udevadm settle --timeout=30 --exit-if-exists=/sys/class/graphics/fb0/dev ; /usr/bin/plymouth show-splash
Type=forking
KillMode=none
SendSIGKILL=no
[Install]
WantedBy=sysinit.target

$ cat /usr/lib/systemd/system/plymouth-quit-wait.service
[Unit]
Description=Wait for Plymouth Boot Screen to Quit
After=rc-local.service plymouth-start.service systemd-user-sessions.service

[Service]
ExecStart=-/usr/bin/plymouth --wait
Type=oneshot
TimeoutSec=20
[Install]
WantedBy=multi-user.target

$ cat /usr/lib/systemd/system/gdm.service
[Unit]
Description=GNOME Display Manager
Conflicts=getty@tty1.service plymouth-quit.service
After=systemd-user-sessions.service getty@tty1.service plymouth-quit.service

[Service]
ExecStart=/usr/sbin/gdm
Restart=always
IgnoreSIGPIPE=no
BusName=org.gnome.DisplayManager
StandardOutput=syslog
StandardError=inherit

[Install]
Alias=display-manager.service