[ptxdist] Fw: Re: Crosscompile a WIFI USB stick firmware with ptxdist

["Dr. Patrick Langfeld" <patrick.langfeld@optimeas.de>]

Dear Thomas,
please call me Patrick :-)
Thank you very much for your quick response! I cant believe that it 
should be that simple - that would be really good news :-). (as my 
developer experience is that things are almost always more complicated 
than expected)

You mean it might be sufficient to copy the carl9170-1.fw to my targets 
destination /usr/local/lib/firmware eg.
mkdir /usr/local/lib/firmware
mv carl9170-1.fw /usr/local/lib/firmware
Am I right?

Is there a way that ptxdist can care for that to automize the job?
OK, I will have a look at the "4.3 Adding binary only files" chapter, 
page 45 of the "how to become a ptxdist guru" pdf. I think thats the 
one.
What I will also need are the packages for "wireless-tools" and 
"wpasupplicant".

in the userland (./ptx menuconfig) I already found the packages in
Networking Tools (cool)
<*> wireless tools
<*> wpa_supplicant
The latter has some subpackages
[ ] dbus control interface
[ ] AP mode
[ ] P2P
[ ] hostap
[ ] wext
[ ] ralink
[ ] nl80211
[ ] wired
[ ] roboswitch
[*] Install wpa_cli

Any idea what I will need as a minimum? Of course you will say that 
depends on what I want to do ;-)
I want a) my device to be a client and connecting with an access point 
and alternative b) a P2P connection with a PC (or multiple devices, each 
of them with a P2P connection to a dedicated PC).


Best regards
Patrick


------ Weitergeleitete Nachricht ------
Von: "Thomas Petazzoni" <thomas.petazzoni@free-electrons.com>
An: ptxdist@pengutronix.de; "Dr. Patrick Langfeld" 
<patrick.langfeld@optimeas.de>
Gesendet: 27.12.2012 15:01:40
Betreff: Re: [ptxdist] Crosscompile a WIFI USB stick firmware with 
ptxdist

Dear Dr. Patrick Langfeld,

On Thu, 27 Dec 2012 13:12:28 +0000, Dr. Patrick Langfeld wrote:

>  My kernel is already configured with the wireless LAN components for
>  80211 and the driver in Lan USB network adapter using the CARL9170,
>  which is the correct one for the DWA-160.
>
>  Now the hard part is to crosscompile the firmware carl9170-1.fw for 
>the
>  USB network adapter. The sources can be found in a git repository
>  https://github.com/chunkeey/carl9170fw.git

If you don't intend to do active development on this firmware, it's
probably easier to use a pre-built version of it, as available at
http://linuxwireless.org/en/users/Drivers/carl9170#Firmware_binary.

>  and come with an autogen.sh script file, which I attached for you to
>  have a look at.
>
>  Now I am wondering HOW TO PROCEED and implement the build process of
>  autogen.sh in ptxdist and which package type is appropriate. Is it a
>  ./ptx newpackage target or a src-cmake-prog as the autogen.sh makes 
>use
>  of cmake.
>  In the readme file is written, that to build the firmware one would 
>need
>  a SH-2 toolchain. Is this also true for cross-compilation? Do I really
>  need to build this toolchain first?

The firmware is the code that runs *inside* your Wifi chip, and
apparently this Wifi chip uses a SuperH 2 processor. So, regardless of
whether your embedded system uses a ARM processor, a x86 processor, or
something else, your USB Wifi device embeds a SH2 processor, and the
firmware is targeting this processor, not your main application
processor (ARM i.MX53 in your case).

So again, unless you need to make modifications to the firmware, I
would probably recommend to go with a pre-built version.

Best regards,

Thomas
--
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com


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