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

[Arnout Vandecappelle]

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
>
>  
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> But I still have several questions:
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>  
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> ·         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?
>
>  
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> ·         To configure RTAI on a standard PC I have to execute within the RTAI
> directory (before building the kernel):
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>  
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>    “make menuconfig”
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>  
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> and then:
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>  
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>     “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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>
>
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-- 
Arnout Vandecappelle arnout at mind be
Senior Embedded Software Architect +32-16-286500
Essensium/Mind http://www.mind.be
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