[Buildroot] Second try: Configuration for real hardware / How to configure RTAI

Spielmann Werner Werner.Spielmann at SWAROVSKI.COM
Wed Dec 17 06:32:55 UTC 2014


Hello Arnout,

many thanks for your help.

Best regards,

Werner


-----Ursprüngliche Nachricht-----
Von: Arnout Vandecappelle [mailto:arnout at mind.be] 
Gesendet: Dienstag, 16. Dezember 2014 23:56
An: Spielmann Werner; buildroot at busybox.net
Betreff: Re: [Buildroot] Second try: Configuration for real hardware / How to configure RTAI

On 16/12/14 16:19, Spielmann Werner wrote:
> Hello,
>
>  
>
> this is my second try.    :-(    Any help is appreciated!
>
>  
>
>  
>
> I was able to pass "make" (for a x86 configuration: kernel 2.6.32.11, 
> rtai 3.8.1, gcc 4.5.4)  for the first time (with the help of Peter Koorsgard).
>
>  
>
> I found this document:
> http://elinux.org/images/2/2a/Using-buildroot-real-project.pdf
>
>  
>
> But I still have several questions:
>
>  
>
> ·         How can I adapt the configuration to my real hardware?
>
> I want to use a x86 architecture with is nearly a standard PC with flash cards.
>
> Have I to configure a board/ directory and a configs/ directory for this Board?
>
> The Ethernet devices will need the Intel e1000e-Driver, the serial 
> devices a
> 8250/16550 driver.

 If you passed the build, then the next step is to create a bootable image (SD or CF card). On a PC that is unfortunately a little complicated. You can look at e.g. board/ts/ts5x00/ for an example.

 Next, you'll probably want to make a custom kernel configuration because the i386_defconfig is pretty bloated. So do a 'make linux-menuconfig' and remove all the drivers you don't need.

 Finally, to save all that configuration, you can create a board/ directory and a defconfig. Look at the BR2_EXTERNAL explanation in the manual for suggestions on how to approach that.

>
> Can you give me any pointers?
>
>  
>
> ·         To configure RTAI on a standard PC I have to execute within the RTAI
> directory (before building the kernel):
>
>  
>
>    "make menuconfig"
>
>  
>
> and then:
>
>  
>
>     "make"
>
> When and how can I configure RTAI in combination with buildroot?

 I haven't used RTAI myself, but I thought it's Kconfig was merged with the kernel's. Hm, looking at RTAI's README, it turns out that I was wrong... Well, currently we only support the automatic configuration of RTAI, not the interactive configuration. Patches to improve that are welcome.



 Regards,
 Arnout


>
> Thanks for reading. Any help is appreciated!
>
>  
>
> Werner
>
>  
>
>
>
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>


--
Arnout Vandecappelle arnout at mind be
Senior Embedded Software Architect +32-16-286500 Essensium/Mind http://www.mind.be G.Geenslaan 9, 3001 Leuven, Belgium BE 872 984 063 RPR Leuven LinkedIn profile: http://www.linkedin.com/in/arnoutvandecappelle
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