From 034ac41e57b01dcb55baaff12354b724a42653cb Mon Sep 17 00:00:00 2001
From: paavaanan <paavaanan_t_n@dell.com>
Date: Wed, 17 Apr 2019 12:34:48 +0530
Subject: [PATCH] [devices]: Watchdog enable/disable in DellEMC S6100  (#2730)

---
 .../debian/platform-modules-s6100.install           |  2 ++
 .../s6100/scripts/platform_watchdog_disable.sh      | 13 +++++++++++++
 .../s6100/scripts/platform_watchdog_enable.sh       |  8 ++++++++
 .../s6100/scripts/s6100_platform.sh                 |  5 +++++
 4 files changed, 28 insertions(+)
 create mode 100755 platform/broadcom/sonic-platform-modules-dell/s6100/scripts/platform_watchdog_disable.sh
 create mode 100755 platform/broadcom/sonic-platform-modules-dell/s6100/scripts/platform_watchdog_enable.sh

diff --git a/platform/broadcom/sonic-platform-modules-dell/debian/platform-modules-s6100.install b/platform/broadcom/sonic-platform-modules-dell/debian/platform-modules-s6100.install
index 9be9da0ab428..a54e5b092642 100644
--- a/platform/broadcom/sonic-platform-modules-dell/debian/platform-modules-s6100.install
+++ b/platform/broadcom/sonic-platform-modules-dell/debian/platform-modules-s6100.install
@@ -6,5 +6,7 @@ common/fstrim.timer etc/systemd/system
 common/fstrim.service etc/systemd/system
 common/platform_reboot usr/share/sonic/device/x86_64-dell_s6100_c2538-r0
 s6100/scripts/platform_sensors.py usr/local/bin
+s6100/scripts/platform_watchdog_enable.sh usr/local/bin
+s6100/scripts/platform_watchdog_disable.sh usr/local/bin
 s6100/scripts/sensors usr/bin
 s6100/systemd/platform-modules-s6100.service etc/systemd/system
diff --git a/platform/broadcom/sonic-platform-modules-dell/s6100/scripts/platform_watchdog_disable.sh b/platform/broadcom/sonic-platform-modules-dell/s6100/scripts/platform_watchdog_disable.sh
new file mode 100755
index 000000000000..c3a90f3e89b2
--- /dev/null
+++ b/platform/broadcom/sonic-platform-modules-dell/s6100/scripts/platform_watchdog_disable.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+#This script is used to disable SMF Watchdog Timer
+
+wd_status=-1
+enabled=0
+
+# Disable Watchdog if enabled
+wd_status=$(io_rd_wr.py  --get --offset 0x207 | cut -d " " -f3)
+
+if [[ $wd_status -eq $enabled ]]; then
+    echo "Disabling Watchdog Timer.."
+    io_rd_wr.py --set --val 1 --offset 0x207
+fi
diff --git a/platform/broadcom/sonic-platform-modules-dell/s6100/scripts/platform_watchdog_enable.sh b/platform/broadcom/sonic-platform-modules-dell/s6100/scripts/platform_watchdog_enable.sh
new file mode 100755
index 000000000000..804627b5e2fc
--- /dev/null
+++ b/platform/broadcom/sonic-platform-modules-dell/s6100/scripts/platform_watchdog_enable.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+#This script is used to enable SMF Watchdog Timer
+
+# Set watchdog to 180 seconds
+io_rd_wr.py --set --val 3 --offset 0x206
+
+# Enable watchdog timer
+io_rd_wr.py --set --val 0 --offset 0x207
diff --git a/platform/broadcom/sonic-platform-modules-dell/s6100/scripts/s6100_platform.sh b/platform/broadcom/sonic-platform-modules-dell/s6100/scripts/s6100_platform.sh
index 1ac6ce93bc1d..f8480f567380 100755
--- a/platform/broadcom/sonic-platform-modules-dell/s6100/scripts/s6100_platform.sh
+++ b/platform/broadcom/sonic-platform-modules-dell/s6100/scripts/s6100_platform.sh
@@ -226,6 +226,11 @@ if [[ "$1" == "init" ]]; then
     modprobe dell_s6100_iom_cpld
     modprobe dell_s6100_lpc
 
+    # Disable Watchdog Timer
+    if [[ -e /usr/local/bin/platform_watchdog_disable.sh ]]; then
+        exec /usr/local/bin/platform_watchdog_disable.sh
+    fi
+
     cpu_board_mux "new_device"
     switch_board_mux "new_device"
     sys_eeprom "new_device"