80 lines
1.3 KiB
Bash
Executable File
80 lines
1.3 KiB
Bash
Executable File
#!/bin/bash
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# chkconfig: 2345 0 99
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# description: script to apply cpu microcode
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# Check that we're a priviledged user
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[ `id -u` = 0 ] || exit 0
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DATAFILE=/lib/firmware/microcode.dat
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. /etc/init.d/functions
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RETVAL=0
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# perform the update
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function start ()
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{
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RETVAL=1
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# Intel 686 and above, AMD family 16 and above
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vendor=`grep "^vendor_id" /proc/cpuinfo | head -n1 | awk -F ": " '{ print $2 }'`
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family=`grep "^cpu family" /proc/cpuinfo | head -n1 | awk -F ": " '{ print $2 }'`
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if [ "$vendor" = "GenuineIntel" ] && [ $family -ge 6 ]; then
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echo -n $"Applying Intel CPU microcode update: "
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elif [ "$vendor" = "AuthenticAMD" ] && [ $family -ge 16 ]; then
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echo $"Loading AMD microcode update module"
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/sbin/modprobe microcode
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return
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else
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return
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fi
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if [ ! -e $DATAFILE ]; then
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echo $"$0: CPU microcode data file not present ($DATAFILE)"
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exit 1
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fi
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/sbin/modprobe microcode
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lt=0
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while [ ! -c /dev/cpu/microcode ]; do
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lt=$[lt+1];
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[ $lt -gt 5 ] && break;
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sleep 0.1;
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done
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/sbin/microcode_ctl -Qu
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RETVAL=$?
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/sbin/rmmod microcode
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return $RETVAL
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}
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stop()
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{
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return
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}
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case "$1" in
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start)
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start
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exit 0
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;;
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stop)
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stop
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;;
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restart|reload|force-reload)
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stop
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start
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;;
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status)
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;;
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*)
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echo $"Usage: $0 {start|stop|restart}"
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exit 1
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esac
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exit $?
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