Re: [Olpc-france] Building an OLPC kernel

[Aime Vareille]

Hi,
I am also trying to compile the last stable kernel 2.6.28.7/8 ; I tried
first from ubuntu 8.10 with 2.6.25 config of debxo, then with the same
oldconfig but from debxo on large SDcard (8GB) on XO and last making
oldconfig on the 2.6.25  original fedora config of the XO and using the
recent kpkg debian kernel packaging, but none of the three attempts
succeeded the last making errors in finding mtd structure during boot.
The http://dev.laptop.org/git/olpc-2.6/ page is not easy to understand ;
there is some problems with the right choice of the config and probably
with the compiling scripts ; I will probably try with the full fedora
environment for olpc ...
What are the best documentation for compiling kernel either on debxo or
fedora ?
Regards
Aimé

Rekik Hanen a écrit :
 Hi,
 I found this link http://wiki.laptop.org/go/Kernel_Building and I
 tried to follow it. But when I run tar zcvf kern.tar.gz
 arch/i386/boot/bzImage System.map /lib/modules/$VERS, I got this
 error tar: error exit delayed from previous errors.
 Note that I use ubuntu 8.10 machine.
 Can anyone help me !!!
 thanks.
 


 

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Re: [Olpc-france] extend the memory flash space with an SD card to build open80211s

[Aime Vareille]

p...@laptop.org a écrit :
 rekik wrote:
   Hi,
   
   I tried to build the kernel open80211s on a group of machines which use
   ubuntu 8.10 and it's work. Now I had to build it on an XO. The problem
   is that I don't have enough space on my flash memory ( 1Go ). So, I had
   to extend it with an SD card ( to have a space  1024 Mo), but I
   don't know the steps to make this solution and the minimum size of the
   SD card..
   
   can anyone help me !!!

 it sounds like you're trying to do the build of open80211s on
 the XO itself.  most people don't do development for the XO that way --
 we build on another machine, and move the binaries onto the XO.

 for simple programs, you can build on most any modern linux
 distribution and your binary will work on the XO, because the
 libraries and environment tend to be compatible.  (you could
 perhaps build a static binary to be sure.)

 the XO is based on fedora, so a fedora machine will be the best
 build host.
   
Yes, but debian can also run on XO.
However I found http://wiki.laptop.org/go/Ubuntu_On_OLPC_XO not good
because it puts the fedora kernel on the ubuntu which works with some
discrepencies ; it takes also some time because of qemu and the boot is
not optimal.
Today, the stuff with debian on XO is cleaner and very fast to install
and test ; http://wiki.laptop.org/go/DebXO is the best page I found
about it :
 # zcat debxo-$DESKTOP.ext3.img.gz  /dev/sdX  (for instance, sdb; not sdb1)
And update the firmware to q2e34.rom at http://dev.laptop.org/pub/firmware/
Then it works fine either on SD card or USB pendrive of 2 GB minimum and
you can still boot and use the native fedora XO build.
With SD cards you could need some swap that can be made with a file
/swap.bin as explained at
http://www.olpcnews.com/forum/index.php?topic=4053.0
However, I have to compile a more recent kernel because the 2.6.25
version on that debian lenny is not sufficient for some of my experiments.
With all the wiki documentation pages I don't know on which I should write.
Regards
Aimé
 paul
 =-
  paul fox, p...@laptop.org
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