[Buildroot] Questions on buildroot device_table.txt file and how to use it

[Buildroot] Questions on buildroot device_table.txt file and how to use it

[Tim Barr]

I have been having a problem with missing devices in buildroot for my
at91sam9g20 design, specifically rtc0 and ppp. The kernel has ppp
enabled and sets the rtt to rtc0. But the RFS does not have drivers for
either in the /dev directory. Doing some research I found a file in
buildroot called device_table.txt that looks like what I need to modify
in order to make these drivers available in my build. One thing I am not
sure of is which version of this file I should modify. There is one in
"target/generic" and also in "target/device/Atmel/root". Which one
should I change? Also, it is not clear to me if it is possible to have
board specific device_table.txt files. Is that possible? And if so, how
would I do it? 
 


Timothy Barr
Hardware Development Engineer
for Multi-Tech Systems, Inc.
 <mailto:tbarr@multitech.com> tbarr at multitech.com 

 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://busybox.net/lists/buildroot/attachments/20081216/4703234c/attachment.htm 

[Buildroot] Questions on buildroot device_table.txt file and how to use it

[Matt Wood]

You should change the target/device/Atmel/root/device_table.txt file.  I have uncommented the /dev/sda and /dev/sdb entries for external flash devices.  The easiest way I've found to rebuild the filesystem after changes like that is to delete the contents of binaries/project_name/*.  Then just execute make from the top level of buildroot and it will rebuild your RFS with the correct changes.

Regards, Matt. 


-------- Original-Nachricht --------
> Datum: Tue, 16 Dec 2008 16:01:31 -0600
> Von: "Tim Barr" <tbarr@multitech.com>
> An: buildroot at uclibc.org
> Betreff: [Buildroot] Questions on buildroot device_table.txt file and how to	use it

> I have been having a problem with missing devices in buildroot for my
> at91sam9g20 design, specifically rtc0 and ppp. The kernel has ppp
> enabled and sets the rtt to rtc0. But the RFS does not have drivers for
> either in the /dev directory. Doing some research I found a file in
> buildroot called device_table.txt that looks like what I need to modify
> in order to make these drivers available in my build. One thing I am not
> sure of is which version of this file I should modify. There is one in
> "target/generic" and also in "target/device/Atmel/root". Which one
> should I change? Also, it is not clear to me if it is possible to have
> board specific device_table.txt files. Is that possible? And if so, how
> would I do it? 
>  
> 
> 
> Timothy Barr
> Hardware Development Engineer
> for Multi-Tech Systems, Inc.
>  <mailto:tbarr@multitech.com> tbarr at multitech.com 
> 
>  

-- 
Sensationsangebot verl?ngert: GMX FreeDSL - Telefonanschluss + DSL 
f?r nur 16,37 Euro/mtl.!* http://dsl.gmx.de/?ac=OM.AD.PD003K1308T4569a