sonic-net · jleveque · Feb 18, 2020 · Nov 15, 2019 · Nov 15, 2019 · Dec 4, 2019
@@ -240,6 +240,13 @@ if [ -f $FIRST_BOOT_FILE ]; then
     # Notify firstboot to Platform, to use it for reboot-cause
     touch /tmp/notify_firstboot_to_platform
 
+    # create /host/reboot-cause/platform/ directory
+    # /host/reboot-cause/platform/reboot-reason
+    # will be used to track last reboot reason
+    if [ ! -d /host/reboot-cause/platform ]; then
+	mkdir -p /host/reboot-cause/platform
+    fi
+
     if [ -d /host/image-$SONIC_VERSION/platform/$platform ]; then
         dpkg -i /host/image-$SONIC_VERSION/platform/$platform/*.deb
     fi

@@ -0,0 +1,97 @@
+#!/usr/bin/python
+#Script to read/write the nvram
+
+import sys
+import os
+import getopt
+import struct
+
+nvram_resource='/dev/nvram'
+
+def usage():
+    ''' This is the Usage Method '''
+
+    print 'Utility for NVRAM read/write'
+    print '\t\t nvram_rd_wr.py --get --offset <offset>'
+    print '\t\t nvram_rd_wr.py --set --val <val>  --offset <offset>'
+    sys.exit(1)
+
+def nvram_reg_read(nvram_resource,offset):
+    fd=os.open(nvram_resource, os.O_RDONLY)
+    if(fd<0):
+        print 'file open failed %s"%nvram_resource'
+        return
+    if(os.lseek(fd, offset, os.SEEK_SET) != offset):
+        print 'lseek failed on %s'%nvram_resource
+        return
+    buf=os.read(fd,1)
+    reg_val1=ord(buf)
+    print 'value %x'%reg_val1
+    os.close(fd)
+
+def nvram_reg_write(nvram_resource,offset,val):
+    fd=os.open(nvram_resource,os.O_RDWR)
+    if(fd<0):
+        print 'file open failed %s"%nvram_resource'
+        return
+    if(os.lseek(fd, offset, os.SEEK_SET) != offset):
+        print 'lseek failed on %s'%nvram_resource
+        return
+    ret=os.write(fd,struct.pack('B',val))
+    if(ret != 1):
+        print 'write failed %d'%ret
+        return
+    os.close(fd)
+
+def main(argv):
+
+    ''' The main function will read the user input from the
+    command line argument and  process the request  '''
+
+    opts = ''
+    val = ''
+    choice = ''
+    resouce = ''
+    offset = ''
+
+    try:
+        opts, args = getopt.getopt(argv, "hgs:" , \
+        ["val=","offset=","help", "get", "set"])
+
+    except getopt.GetoptError:
+        usage()
+
+    if not os.path.exists(nvram_resource):
+        print 'NVRAM is not initialized'
+        sys.exit(1)
+
+    for opt,arg in opts:
+
+        if opt in ('-h','--help'):
+            choice = 'help'
+
+        elif opt in ('-g', '--get'):
+            choice = 'get'
+
+        elif opt in ('-s', '--set'):
+            choice = 'set'
+
+        elif opt ==  '--offset':
+            offset = int(arg,16) - 0xE
+
+        elif opt ==  '--val':
+            val = int(arg,16)
+
+    if choice == 'get' and offset != '':
+        nvram_reg_read(nvram_resource,offset)
+
+    elif choice == 'set' and offset != '' and val != '':
+        nvram_reg_write(nvram_resource,offset,val)
+
+    else:
+        usage()
+
+#Calling the main method
+if __name__ == "__main__":
+    main(sys.argv[1:])
+
@@ -2,7 +2,11 @@ s6100/scripts/iom_power_*.sh usr/local/bin
 s6100/scripts/s6100_platform.sh usr/local/bin
 common/dell_i2c_utils.sh usr/local/bin
 common/io_rd_wr.py usr/local/bin
+common/nvram_rd_wr.py usr/local/bin
 s6100/scripts/platform_reboot_override usr/share/sonic/device/x86_64-dell_s6100_c2538-r0
+s6100/scripts/fast-reboot_plugin usr/share/sonic/device/x86_64-dell_s6100_c2538-r0
+s6100/scripts/track_reboot_reason.sh usr/share/sonic/device/x86_64-dell_s6100_c2538-r0
+s6100/scripts/warm-reboot_plugin usr/share/sonic/device/x86_64-dell_s6100_c2538-r0
 s6100/scripts/override.conf /etc/systemd/system/systemd-reboot.service.d
 common/dell_lpc_mon.sh usr/local/bin
 s6100/scripts/platform_sensors.py usr/local/bin
@@ -12,6 +16,7 @@ s6100/scripts/platform_watchdog_disable.sh usr/local/bin
 s6100/scripts/sensors usr/bin
 s6100/systemd/platform-modules-s6100.service etc/systemd/system
 s6100/systemd/s6100-lpc-monitor.service etc/systemd/system
+s6100/systemd/s6100-reboot-cause.service etc/systemd/system
 tools/flashrom/flashrom usr/local/bin/
 common/fw-updater usr/local/bin
 common/onie_mode_set usr/local/bin
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+if [[ -d /sys/devices/platform/SMF.512/hwmon/ ]]; then
+    cd /sys/devices/platform/SMF.512/hwmon/*
+    echo 0xcc > mb_poweron_reason
+fi
@@ -1,11 +1,17 @@
 #!/usr/bin/python
 import sys
 import os
+import subprocess
 import struct
 
 PORT_RES = '/dev/port'
 
 
+def log_software_reboot():
+    # Run plugin script which will track the cli triggered reboot, fastboot, warmboot
+    res = subprocess.check_output(['/usr/share/sonic/device/x86_64-dell_s6100_c2538-r0/fast-reboot_plugin'])
+    return
+
 def portio_reg_write(resource, offset, val):
     fd = os.open(resource, os.O_RDWR)
     if(fd < 0):
@@ -21,5 +27,6 @@ def portio_reg_write(resource, offset, val):
     os.close(fd)
 
 if __name__ == "__main__":
+    log_software_reboot()
     portio_reg_write(PORT_RES, 0xcf9, 0xe)
 
@@ -237,24 +237,6 @@ reset_muxes() {
     io_rd_wr.py --set --val 0xff --offset 0x20b
 }
 
-track_reboot_reason() {
-    if [[ -d /sys/devices/platform/SMF.512/hwmon/ ]]; then
-        rv=$(cd /sys/devices/platform/SMF.512/hwmon/*; cat mb_poweron_reason)
-        reason=$(echo $rv | cut -d 'x' -f2)
-        if [ $reason == "ff" ]; then
-            cd /sys/devices/platform/SMF.512/hwmon/*
-            if [[ -e /tmp/notify_firstboot_to_platform ]]; then
-                echo 0x01 > mb_poweron_reason
-            else
-                echo 0xbb > mb_poweron_reason
-            fi
-        elif [ $reason == "bb" ] || [ $reason == "1" ]; then
-            cd /sys/devices/platform/SMF.512/hwmon/*
-            echo 0xaa > mb_poweron_reason
-        fi
-    fi
-}
-
 install_python_api_package() {
     device="/usr/share/sonic/device"
     platform=$(/usr/local/bin/sonic-cfggen -H -v DEVICE_METADATA.localhost.platform)
@@ -277,7 +259,8 @@ if [[ "$1" == "init" ]]; then
     modprobe dell_ich
     modprobe dell_s6100_iom_cpld
     modprobe dell_s6100_lpc
-    track_reboot_reason
+    modprobe nvram
+    systemctl start s6100-reboot-cause.service
 
     # Disable Watchdog Timer
     if [[ -e /usr/local/bin/platform_watchdog_disable.sh ]]; then
@@ -313,6 +296,7 @@ elif [[ "$1" == "deinit" ]]; then
     modprobe -r i2c-mux-pca954x
     modprobe -r i2c-dev
     modprobe -r dell_ich
+    modprobe -r nvram
     remove_python_api_package
 else
      echo "s6100_platform : Invalid option !"

@@ -0,0 +1,168 @@
+#!/bin/bash
+
+reboot_dir_found=false
+reboot_file_found=false
+smf_dir_missing=0
+nvram_missing=0
+
+REBOOT_CAUSE_FILE=/host/reboot-cause/reboot-cause.txt
+REBOOT_REASON_FILE=/host/reboot-cause/platform/reboot_reason
+BIOS_VERSION_FILE=/host/reboot-cause/platform/bios_minor_version
+SMF_POWERON_REASON=/sys/devices/platform/SMF.512/hwmon/*/smf_poweron_reason
+SMF_RESET_REASON=/sys/devices/platform/SMF.512/hwmon/*/smf_reset_reason
+MAILBOX_POWERON_REASON=/sys/devices/platform/SMF.512/hwmon/*/mb_poweron_reason
+NVRAM_DEVICE_FILE=/dev/nvram
+RESET_REASON_FILE=/host/reboot-cause/platform/reset_reason
+SMF_DIR=/sys/devices/platform/SMF.512/hwmon/
+
+while [[ ! -d $SMF_DIR ]]
+do
+    sleep 0.5
+    let smf_dir_missing=$smf_dir_missing+1
+    if [[ "$smf_dir_missing" = "5" ]]; then
+        echo "SMF is not initialized"
+        smf_dir_missing=0
+    fi
+done
+
+SMF_RESET=$(cat $SMF_RESET_REASON)
+
+if [[ -d /host/reboot-cause/platform ]]; then
+    reboot_dir_found=true
+    if [[ -f $REBOOT_REASON_FILE ]]; then
+        reboot_file_found=true
+    fi
+fi
+
+SMF_BIOS_REG=$(io_rd_wr.py --get --offset 0x203 | cut -d " " -f 3)
+SMF_BIOS_REG=$((16#$SMF_BIOS_REG))
+bios_secondary_boot=$(($SMF_BIOS_REG & 1))
+
+_get_smf_reset_register(){
+    BIOS_VERSION=$(/usr/sbin/dmidecode -s system-version)
+    BIOS_VERSION_MINOR=$(echo $BIOS_VERSION | cut -d'-' -f 2)
+
+    if [[ $BIOS_VERSION_MINOR -gt 7 ]]; then
+        echo $BIOS_VERSION > $BIOS_VERSION_FILE
+    elif [[ "$bios_secondary_boot" = "0" ]]; then
+        # For Primary BIOS with older version
+        if [[ -e $BIOS_VERSION_FILE ]]; then
+            rm $BIOS_VERSION_FILE
+        fi
+    fi
+
+    if [[ -e $BIOS_VERSION_FILE ]]; then
+        while [[ ! -e $NVRAM_DEVICE_FILE ]]
+        do
+            sleep 1
+            let nvram_missing=$nvram_missing+1
+            if [[ "$nvram_missing" = "5" ]]; then
+                echo "NVRAM is not initialized"
+                nvram_missing=0
+            fi
+        done
+        first_reset=$(nvram_rd_wr.py --get --offset 0x5c | cut -d " " -f 2)
+        second_reset=$(nvram_rd_wr.py --get --offset 0x5d | cut -d " " -f 2)
+        third_reset=$(nvram_rd_wr.py --get --offset 0x5e | cut -d " " -f 2)
+        fourth_reset=$(nvram_rd_wr.py --get --offset 0x5f | cut -d " " -f 2)
+
+        if [[ "$first_reset" != "ee" ]]; then
+            SMF_RESET=$first_reset
+        fi
+
+        # Saving NVRAM values for future debugging
+        if [[ $reboot_dir_found = true ]]; then
+            echo "First reset - $first_reset" > $RESET_REASON_FILE
+            echo "Second reset - $second_reset" >> $RESET_REASON_FILE
+            echo "Third reset - $third_reset" >> $RESET_REASON_FILE
+            echo "Fourth reset - $fourth_reset" >> $RESET_REASON_FILE
+        fi
+
+        # Clearing NVRAM values to holding next reset values
+        nvram_rd_wr.py --set --val 0xee --offset 0x58
+        nvram_rd_wr.py --set --val 0xee --offset 0x5c
+        nvram_rd_wr.py --set --val 0xee --offset 0x5d
+        nvram_rd_wr.py --set --val 0xee --offset 0x5e
+        nvram_rd_wr.py --set --val 0xee --offset 0x5f
+    fi
+}
+
+_is_thermal_reset() {
+    prev_thermal=$(cat $REBOOT_REASON_FILE)
+    curr_poweron_reason=$(cat $SMF_POWERON_REASON)
+    if [[ $curr_poweron_reason = "11" ]]; then
+       echo 0
+       return
+    fi
+    if [[ $prev_thermal = $curr_poweron_reason ]]; then
+        echo 2
+        return
+    else
+        echo "$curr_poweron_reason" > $REBOOT_REASON_FILE
+        echo 1
+        return
+    fi
+
+    echo 0
+    return
+}
+
+_is_watchdog_reset(){
+    curr_reset_reason=$SMF_RESET
+    if [[ $curr_reset_reason = "33" ]]; then
+        echo 1
+        return
+    fi
+
+    echo 0
+    return
+}
+
+_is_unknown_reset(){
+    if [[ -f $REBOOT_CAUSE_FILE ]]; then
+	if [[ $1 = 0 ]]; then
+	    echo "Unknown software reboot" > $REBOOT_CAUSE_FILE
+	    return
+	fi
+        curr_poweron_reason=$(cat $SMF_POWERON_REASON)
+	curr_reset_reason=$SMF_RESET
+	mb_poweron_reason=$(cat $MAILBOX_POWERON_REASON)
+	echo "Unknown POR: $curr_poweron_reason RST: $curr_reset_reason MBR: $mb_poweron_reason" > $REBOOT_CAUSE_FILE
+    fi
+
+}
+
+update_mailbox_register(){
+    if [[ "$bios_secondary_boot" = "1" ]]; then
+        echo "Secondary BIOS booted"
+    fi
+
+    if [[ $reboot_file_found = false ]]; then
+        echo "None" > $REBOOT_REASON_FILE
+    fi
+
+    _get_smf_reset_register
+    if [[ -d /sys/devices/platform/SMF.512/hwmon/ ]]; then
+        is_thermal_reboot=$(_is_thermal_reset)
+
+        is_wd_reboot=$(_is_watchdog_reset)
+
+        mbr=$(cat $MAILBOX_POWERON_REASON)
+        reason=$(echo $mbr | cut -d 'x' -f2)
+        if [[ $reason = "ff" ]]; then
+            echo "None" > $REBOOT_REASON_FILE
+            echo 0xbb > $MAILBOX_POWERON_REASON
+        elif [[ $is_thermal_reboot = 1 ]]; then
+            echo 0xee > $MAILBOX_POWERON_REASON
+        elif [[ $is_wd_reboot = 1 ]] && [[ $reason != "cc" ]]; then
+            echo 0xdd > $MAILBOX_POWERON_REASON
+        elif [[ $reason = "cc" ]]; then
+            echo 0xaa > $MAILBOX_POWERON_REASON
+        else
+	    _is_unknown_reset $is_thermal_reboot
+            echo 0x99 > $MAILBOX_POWERON_REASON
+        fi
+    fi
+}
+
+update_mailbox_register
@@ -0,0 +1 @@
+fast-reboot_plugin