12.01.2011 20:28, David Henderson пишет:
Andrew wrote:
12.01.2011 18:15, David Henderson пишет:
So far in my project, I've been loading the kernel modules (drivers)
manually in the startup scripts. This is, obviously, far from ideal
as this will only allow the OS to work on a fixed set of hardware.
I've been investigating how to use mdev to install the drivers for
detected hardware (e.g. network cards). So far, it looks like I'll
have to setup a script that's called by mdev to process any kernel
modules related to the hardware in /etc/mdev.conf. The problem I've
found is that I can't really find an example of how to do this with
mdev (udev seems to use $MODALIAS with /etc/udev/scripts). I've also
searched the busybox documentation for mdev which doesn't cover this
topic. Can anyone point me to some relevant documentation/example,
or provide something to get me started?
Thanks,
Dave
For cold-plug hardware detection I used simple modalias search +
modprobe by aliases (5 lines in script). Works perfectly with full
modprobe, on tiny variant of modprobe (which loads just 1st matching
module) it fails sometimes for devices like IDE controllers that have
2 or more corresponding modules (for ex., generic ata which matches
by device class&etc and vendor driver which match VenID/DevID). You
can see it in LEAF v4.
Thanks Andrew. I'm not familiar with LEAF, and since we're only
talking about a file that's 5 lines, can you post in a reply?
#autodetection of hardware
MODALIAS=`find /sys/devices -iname modalias -exec cat {} \;`
TMODALIAS=""
while [ `echo "$MODALIAS"|wc -l` -gt `echo "$TMODALIAS"|wc -l` ]; do
for i in $MODALIAS; do
/sbin/modprobe $i 2>/dev/null
done
[ "$VERBOSE" ] && echo Loaded `echo "$MODALIAS"|wc -l` modaliases
[ "$DRV_WAIT" -gt 0 ] && sleep $DRV_WAIT
TMODALIAS="$MODALIAS"
MODALIAS=`find /sys/devices -iname modalias -exec cat {} \;`
done
Is there a way to do a "sleep" or "process order" for devices using 2
or more modules?
Dave
Here is a patch for additional module loading priority:
http://leaf.cvs.sourceforge.net/viewvc/leaf/src/bering-uclibc4/source/busybox/modprobe_alias_behaviors.patch?revision=1.2&view=markup
Or you can switch from tiny to full modutils in busybox (+14kB of code)
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