4 # https://www.kernel.org/doc/Documentation/firmware_class/README
5 # https://www.kernel.org/doc/Documentation/firmware_class/hotplug-script
8 # handle only firmware add requests
9 if [ "$SUBSYSTEM" != "firmware" ]; then
12 if [ "$ACTION" != "add" ]; then
16 FIRMWARE_DIRS="/lib/firmware/updates/$(uname -r) /lib/firmware/updates \
17 /lib/firmware/$(uname -r) /lib/firmware"
19 # @param string message
20 # @param int loglevel. defaults to "6" (info)
23 # KERN_EMERG "0" Emergency messages, system is about to crash or is unstable
24 # KERN_ALERT "1" Something bad happened and action must be taken immediately
25 # KERN_CRIT "2" A critical condition occurred like a serious hardware/software failure
26 # KERN_ERR "3" An error condition, often used by drivers to indicate difficulties with the hardware
27 # KERN_WARNING "4" A warning, meaning nothing serious by itself but might indicate problems
28 # KERN_NOTICE "5" Nothing serious, but notably nevertheless. Often used to report security events.
29 # KERN_INFO "6" Informational message e.g. startup information at driver initialization
30 # KERN_DEBUG "7" Debug messages
31 # KERN_CONT "c" "continued" line of log printout (only done after a line that had no enclosing \n)
33 local msg="$1" level=${2:-3}
34 echo "<$level>$msg" > /dev/kmsg
39 kmsg "${0##*/}[$$] $*"
42 if [ ! -e /sys$DEVPATH/loading ]; then
43 err "firmware loader misses sysfs directory"
47 for DIR in $FIRMWARE_DIRS; do
48 [ -e "$DIR/$FIRMWARE" ] || continue
49 echo 1 > /sys$DEVPATH/loading
50 cat "$DIR/$FIRMWARE" > /sys$DEVPATH/data
51 echo 0 > /sys$DEVPATH/loading
55 echo -1 > /sys$DEVPATH/loading
56 err "Cannot find firmware file '$FIRMWARE'"