[yocto] Need help for building kernel image with embeddedinitramfs.cpio

[giovanni.pavoni at exorint.it]

Thanks for your suggestion. I have not yet tried with kernel modules
but the whole build sequence appears fine and the output is running. 

I am hitting a problem thought with step 3

I have this layout (meta-mylayer is parallel to meta-yocto):

meta-mylayer/conf/machine/mymachine.conf
meta-mylayer/recipes-kernel/linux/linux.inc
meta-mylayer/recipes-kernel/linux/linux_2.6.37.bb
meta-mylayer/recipes-kernel/linux/linux_2.6.37/mymachine/defconfig

linux.inc inherit from kernel and I am setting
PREFERRED_PROVIDER_virtual/kernel = "linux"
PREFERRED_VERSION_linux ?= "2.6.37"
in mymachine.conf. 

This builds and deploys a uImage-mymachine-"stamp1".bin fine for 
mymachine.

I added a kernel recipe in my recipe-kernel layer 
like this:

meta-mylayer/recipes-kernel/linux/linuxramfs_2.6.37.bb
meta-mylayer/recipes-kernel/linux/linuxramfs_2.6.37/mymachine/defconfig 

in linuxramfs_2.6.37/mymachine/defconfig I patched all options for ramfs 
(source / compression etc)
and tweaked linuxramfs_2.6.37.bb as per your indication (starting from the 
linux_2.6.37.bb
I had up and running).

Problems:

1. when I run "bitbake linuxramfs" I get 
"ERROR: Multiple .bb files are due to be built which each provide 
virtual/kernel" 

I am seeing multiple reference on the net about this error but I am not 
understanding
how to handle. Both linuxramfs_2.6.37.bb and linux_2.6.37.bb are providing 
virtual/kernel.

2. "bitbake linuxramfs" deploys a uImage-mymachine-"stamp2".bin 
To overwrite this in a way I get a uImage-ramfs-mymachine-"stampxxx".bin
(so that I can easily identify it against a normal uImage - only kernel) 
what do_* task should I reimplement in my linuxramfs_2.6.37.bb recipe?

Thanks in advance for your attention


Giovanni Pavoni
R&D Department

Exor International S.p.A.
Via Monte Fiorino,9
I-37057 San Giovanni Lupatoto (VR)
Phone:+390458774839 - Fax:+390458779023

giovanni.pavoni at exorint.it - www.exorint.net - www.exorint.it



ATTENZIONE: Privacy Policy – D.Lgs. 196/2003
 Le informazioni contenute in questo messaggio di posta elettronica sono di 
carattere privato e confidenziale ed esclusivamente rivolte al destinatario 
sopra indicato. Nel caso aveste ricevuto questo messaggio di posta elettronica 
per errore, vi comunichiamo che ai sensi del suddetto decreto è vietato l’uso, 
la diffusione, distribuzione o riproduzione da parte di ogni altra persona. 
Siete pregati di segnalarlo immediatamente rispondendo al mittente e di 
distruggere quanto ricevuto (compresi i file allegati) senza farne copia o 
leggerne il contenuto.

This e-mail transmission contains information that is confidential and may be 
privileged. It is intended only for the addressee(s) named above. If you 
receive this e-mail in error, please do not read, copy or disseminate it in any 
manner. If you are not the intended recipient, any disclosure, copying, 
distribution or use of the contents of this information is prohibited. Please 
reply to the message immediately by informing the sender that the message was 
misdirected. After replying, please erase it from your computer system. Your 
assistance in correcting this error is appreciated.
 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.yoctoproject.org/pipermail/yocto/attachments/20120503/b04a144a/attachment.html>