[graceful reboot] Add watchdog, add execution of pre_reboot_hook, fix…

… --force flag bug

Signed-off-by: vadymhlushko-mlnx <[email protected]>

scripts/reboot

@@ -1,10 +1,13 @@
 #!/bin/bash
+
 DEVPATH="/usr/share/sonic/device"
 PLAT_REBOOT="platform_reboot"
+PRE_REBOOT_HOOK="pre_reboot_hook"
 PLATFORM_UPDATE_REBOOT_CAUSE="platform_update_reboot_cause"
 REBOOT_CAUSE_FILE="/host/reboot-cause/reboot-cause.txt"
 PLATFORM_REBOOT_PRE_CHECK="platform_reboot_pre_check"
 REBOOT_TIME=$(date)
+WATCHDOG_UTIL="/usr/local/bin/watchdogutil"
 
 # Reboot immediately if we run the kdump capture kernel
 VMCORE_FILE=/proc/vmcore
@@ -27,6 +30,7 @@ ASIC_TYPE=$(sonic-cfggen -y /etc/sonic/sonic_version.yml -v asic_type)
 SUBTYPE=$(sonic-cfggen -d -v DEVICE_METADATA.localhost.subtype)
 ASAN=$(sonic-cfggen -y /etc/sonic/sonic_version.yml -v asan)
 VERBOSE=no
+REBOOT_FLAGS=""
 EXIT_NEXT_IMAGE_NOT_EXISTS=4
 EXIT_SONIC_INSTALLER_VERIFY_REBOOT=21
 EXIT_PLATFORM_FW_AU_FAILURE=22
@@ -183,6 +187,9 @@ function parse_options()
             t )
                 TAG_LATEST=no
                 ;;
+            f )
+                REBOOT_FLAGS+=" -f"
+                ;;
         esac
     done
 }
@@ -242,9 +249,19 @@ if [ -x ${DEVPATH}/${PLATFORM}/${PLATFORM_UPDATE_REBOOT_CAUSE} ]; then
     ${DEVPATH}/${PLATFORM}/${PLATFORM_UPDATE_REBOOT_CAUSE}
 fi
 
+if [ -x ${DEVPATH}/${PLATFORM}/${PRE_REBOOT_HOOK} ]; then
+    debug "Executing the pre-reboot script"
+    ${DEVPATH}/${PLATFORM}/${PRE_REBOOT_HOOK}
+fi
+
+if [ -x ${WATCHDOG_UTIL} ]; then
+    debug "Enabling the Watchdog before reboot"
+    ${WATCHDOG_UTIL} arm
+fi
+
 if [ -x ${DEVPATH}/${PLATFORM}/${PLAT_REBOOT} ]; then
     VERBOSE=yes debug "Rebooting with platform ${PLATFORM} specific tool ..."
-    ${DEVPATH}/${PLATFORM}/${PLAT_REBOOT} $@
+    ${DEVPATH}/${PLATFORM}/${PLAT_REBOOT} ${REBOOT_FLAGS}
 
     # There are a couple reasons execution reaches here:
     #
@@ -260,4 +277,4 @@ if [ -x ${DEVPATH}/${PLATFORM}/${PLAT_REBOOT} ]; then
 fi
 
 VERBOSE=yes debug "Issuing OS-level reboot ..." >&2
-exec /sbin/reboot $@
+exec /sbin/reboot ${REBOOT_FLAGS}