94 lines
1.7 KiB
Bash
Executable File
94 lines
1.7 KiB
Bash
Executable File
#!/bin/bash
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# chkconfig: - 0 99
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# description: script to apply cpu microcode
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# vars:
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#
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# START distribution specific way of kicking programs
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# END distribution specific way of checking return status
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# PROGRAM the executable to run
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# ARGUMENTS the argument we're going to call PROGRAM with
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DEVICE=/dev/cpu/microcode
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ARGUMENTS=-Qu
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RETVAL=0
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PROGRAM=/sbin/microcode_ctl
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# Lets just be sure we have a device file...
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if [ ! -e $DEVICE ];
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then
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echo $"$0: microcode device $DEVICE doesn't exist?"
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exit 1
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elif [ ! -c $DEVICE ];
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then
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echo $"$0: $DEVICE not a character device?"
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exit 1
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fi
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if [ ! -e /etc/firmware/microcode.dat ];
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then
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echo $"$0: microcode datafile not present (/etc/firmware/microcode.dat)"
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exit 1
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fi
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. /etc/init.d/functions
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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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# Make sure we are on an intel machine
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vendor=`cat /proc/cpuinfo | \
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grep "^vendor_id" | sort -u | \
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awk -F ": " '{ print $2 }'`
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if [ "$vendor" != "GenuineIntel" ]; then
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return
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fi
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# Microcode wasn't available until 686's.
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family=`cat /proc/cpuinfo | \
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grep "^cpu family" | sort -u | \
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awk -F ": " '{ print $2 }'`
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if [ $family -lt 6 ]; then
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return
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fi
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echo -n $"Applying Intel Microcode update: "
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/sbin/modprobe microcode
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lt=0
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while [ ! -c /dev/cpu/microcode ]; do
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lt=$[lt+1];
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[ $lt -gt 5 ] && break;
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sleep 1;
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done
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daemon $PROGRAM $ARGUMENTS
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RETVAL=$?
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# trap the most common case, errno 19 = no device
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if [ $RETVAL -eq 19 ];
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then
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echo $"$0: kernel does not have microcode device support"
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fi
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/sbin/rmmod microcode
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echo
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}
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case "$1" in
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start|reload|force-reload|restart)
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start
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exit 0
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;;
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stop)
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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|restart}"
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exit 1
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esac
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