[Unit] Description=Load SEP5 Driver Script After=local-fs.target Before=sysinit.target ConditionPathExists=/usr/local/sbin/load-sep5-driver.sh [Service] Type=oneshot ExecStart=/usr/local/sbin/load-sep5-driver.sh RemainAfterExit=yes StandardOutput=journal StandardError=journal
log "Starting SEP5 driver load attempt" if lsmod | grep -q "^$DRIVER_NAME "; then log "Driver already loaded" exit 0 fi Pre-check module exists if ! $MODPROBE --dry-run "$DRIVER_NAME" 2>/dev/null; then log "ERROR: SEP5 module not found or invalid" exit 1 fi Load module if $MODPROBE "$DRIVER_NAME"; then log "SUCCESS: SEP5 driver loaded" # Optional: create device node if [ -c /dev/sep5 ]; then chmod 660 /dev/sep5 fi exit 0 else log "FAILED: modprobe sep5 returned $?" $DMSG | tail -20 | logger -t "$LOG_TAG" exit 1 fi
/usr/local/sbin/load-sep5-driver.sh
/etc/systemd/system/sep5-driver-load.service
#!/bin/bash set -euo pipefail LOG_TAG="sep5-loader" DRIVER_NAME="sep5" MODPROBE="/sbin/modprobe" DMSG="/bin/dmesg" [Unit] Description=Load SEP5 Driver Script After=local-fs
# /etc/systemd/system/sep5-driver-load.service.d/10-depends.conf [Unit] After=dkms.service Requires=dkms.service
/etc/systemd/system/sep5-driver-load.service [Unit] Description=Load SEP5 Driver at Boot Documentation=man:modprobe(8) DefaultDependencies=false Before=local-fs.target systemd-modules-load.service ConditionPathExists=/lib/modules/$(uname -r)/kernel/drivers/sep5.ko [Service] Type=oneshot RemainAfterExit=yes ExecStartPre=/sbin/modprobe --dry-run sep5 ExecStart=/sbin/modprobe sep5 ExecStartPost=/bin/sh -c 'lsmod | grep -q sep5 && touch /run/sep5-loaded || exit 1' ExecReload=/sbin/modprobe -r sep5 && /sbin/modprobe sep5 ExecStop=/sbin/modprobe -r sep5 TimeoutStartSec=10s Restart=no StandardOutput=journal+console StandardError=journal+console [Unit] Description=Load SEP5 Driver Script After=local-fs
[Install] WantedBy=sysinit.target If the driver requires extra setup (e.g., parameters, firmware, device nodes):
[Install] WantedBy=sysinit.target # Make script executable chmod +x /usr/local/sbin/load-sep5-driver.sh Enable the service systemctl daemon-reload systemctl enable sep5-driver-load.service Test immediately systemctl start sep5-driver-load.service systemctl status sep5-driver-load.service Check boot-time failures journalctl -u sep5-driver-load.service -b journalctl -b | grep -i "sep5|modprobe" Common failures: - Module not compiled for current kernel → rebuild driver - Missing dependencies → check with modprobe --show-depends sep5 - Permission issues → confirm module path readable If you meant "SEP5" as a custom/out-of-tree driver Add a drop-in dependency to ensure module compilation occurs before loading: [Unit] Description=Load SEP5 Driver Script After=local-fs
