# Pastebin t9gbG0cC
 robclark  yoda  ~  cat /etc/systemd/system/remoteproc.service
[Unit]
Before=systemd-user-sessions.service

[Service]
Type=oneshot
ExecStart=/usr/local/sbin/start-remoteproc.sh
RemainAfterExit=yes

[Install]
WantedBy=multi-user.target
EOF
 robclark  yoda  ~  cat /usr/local/sbin/start-remoteproc.sh
#!/bin/bash

echo start > /sys/class/remoteproc/remoteproc0/state
echo start > /sys/class/remoteproc/remoteproc1/state