Add pcie-check service to check PCIe devices at boot

files/build_templates/pcie-chk.timer

@@ -0,0 +1,9 @@
+[Unit]
+Description=Start the pcie-chk.service in 10 seconds after boot
+
+[Timer]
+OnBootSec=10sec
+Unit=pcie-chk.service
+
+[Install]
+WantedBy=timers.target

files/build_templates/sonic_debian_extension.j2

@@ -353,13 +353,13 @@ echo "procdockerstatsd.service" | sudo tee -a $GENERATED_SERVICE_FILE
 sudo cp $IMAGE_CONFIGS/procdockerstatsd/procdockerstatsd $FILESYSTEM_ROOT/usr/bin/
 
 # Copy systemd timer configuration
-sudo cp $BUILD_TEMPLATES/pcie-mon.timer $FILESYSTEM_ROOT_USR_LIB_SYSTEMD_SYSTEM
-sudo LANG=C chroot $FILESYSTEM_ROOT systemctl enable pcie-mon.timer
+sudo cp $BUILD_TEMPLATES/pcie-chk.timer $FILESYSTEM_ROOT_USR_LIB_SYSTEMD_SYSTEM
+sudo LANG=C chroot $FILESYSTEM_ROOT systemctl enable pcie-chk.timer
 
-# Copy pcie-mon service files
-sudo cp $IMAGE_CONFIGS/pcie-mon/pcie-mon.service $FILESYSTEM_ROOT_USR_LIB_SYSTEMD_SYSTEM
-echo "pcie-mon.service" | sudo tee -a $GENERATED_SERVICE_FILE
-sudo cp $IMAGE_CONFIGS/pcie-mon.sh $FILESYSTEM_ROOT/usr/bin/
+# Copy pcie-chk service files
+sudo cp $IMAGE_CONFIGS/pcie-chk/pcie-chk.service $FILESYSTEM_ROOT_USR_LIB_SYSTEMD_SYSTEM
+echo "pcie-chk.service" | sudo tee -a $GENERATED_SERVICE_FILE
+sudo cp $IMAGE_CONFIGS/pcie-chk.sh $FILESYSTEM_ROOT/usr/bin/
 
 # Copy systemd timer configuration
 # It implements delayed start of services

files/image_config/pcie-chk/pcie-chk.service

@@ -0,0 +1,8 @@
+[Unit]
+Description=Check the PCIe device presence and status
+After=rc.local.service
+
+[Service]
+Type=simple
+ExecStart=/usr/bin/pcie-chk.sh
+

files/image_config/pcie-mon/pcie-mon.sh → files/image_config/pcie-chk/pcie-chk.sh

@@ -23,7 +23,7 @@ function check_and_rescan_pcie_devices()
             debug "PCIe check passed"
             exit
         else
-            debug "PCIe RESCAN"
+            debug "PCIe check failed, try pci bus rescan"
             echo 1 > /sys/bus/pci/rescan
          fi
          sleep 1