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i know how to load your module automatically in ubuntu. you put your module in /etc/modules

But, i compile a kernel and filesystem for an embedded system which i am working on it. but there is no "modules" file in /etc directory. (i am using angstrom by the way)

Is there anyway to load my module at boot?

thanks in advance,

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2
  • 1
    What distribution are you running on that build with the custom kernel?
    – Kaurin
    Commented Mar 7, 2012 at 9:42
  • 1
    i am using the device called tam3517 and i downloaded the kernel that they gave me. Build it with my toolchain, angstrom. And i create a filesystem with buildroot. technexion.com/index.php/support/download-center/…
    – thehilmisu
    Commented Mar 7, 2012 at 9:47

2 Answers 2

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2

Do you, perhaps, have a file /etc/rc.modules, or a directory with that name?
If not, you might try and find a file /etc/rc.local, and just add modprobe yourmodule at the end.

/etc/rc.local file contains custom user commands that are executed on boot.

Previous solution works for most distros but not for you. You have some minimal rescue-like linux distro. This is why I suggest just appending modprobe yourmodule to the end of the /etc/inittab.

NOTE: THIS METHOD SHOULD BE AVOIDED IF YOU HAVE A NORMAL LINUX DISTRIBUTION LIKE UBUNTU, MINT, FEDORA, ARCH...
IF YOU USE A NORMAL DISTRIBUTION, PLEASE USE YOUR DISTRIBUTION'S WAY OF ADDING CUSTOM MODULES.

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7
  • i have created rc.local under my /etc folder and add this command but it's not working.
    – thehilmisu
    Commented Mar 7, 2012 at 10:03
  • Can you paste the output of the following command here: ls -al /etc/
    – Kaurin
    Commented Mar 7, 2012 at 10:23
  • it is too long to paste here. i am going to paste it as answer.
    – thehilmisu
    Commented Mar 7, 2012 at 10:30
  • Since, i am a new user i cannot add answer to my question =) what do you looking for in here ? i can answer you without pasting the output
    – thehilmisu
    Commented Mar 7, 2012 at 10:32
  • use pastebin pastebin.com
    – Kaurin
    Commented Mar 7, 2012 at 11:14
3

The init system has to insmod them.

At least for Buildroot / BusyBox, there seems to be not pre-automated way, so you should just add your own /etc/init.d/S99Modules file containing commands of type:

modprobe mymodule
modprobe mymodule2

/etc/init.d/S99Modules is then run from /etc/init.d/rcS:

for i in /etc/init.d/S??* ;do
    ...
            $i start

which in turn is called by the line:

::sysinit:/etc/init.d/rcS

in /etc/inittab, and that file is run by the init process, which is the executable at /init or specified by the init= kernel command line parameter.

Here is a convenient setup to try it out.

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