[yocto] linux-xilinx: uImage.dtb files not being generated anymore

[Elvis Dowson]

Hi Khem,

On Jun 30, 2012, at 7:41 PM, Khem Raj wrote:

> On Sat, Jun 30, 2012 at 4:07 AM, Elvis Dowson <elvis.dowson at gmail.com> wrote:
>> Hi,
>> 
>> On Jun 30, 2012, at 10:17 AM, Elvis Dowson wrote:
>> 
>>> About a week ago, my linux-xilinx builds used to correctly generate the *.dtb files, required for the PowerPC440 processor on my Xilinx ML-507 development board. After having recently updated poky, I find that the required *.dtb files are not generated anymore.
>>> 
>>> Would someone be able to tell me which file I should take a look at to restore this functionality?
>>> 
>>> My build configuration is as follows:
>>> 
>>> Build Configuration:
>>> BB_VERSION        = "1.15.2"
>>> TARGET_ARCH       = "powerpc"
>>> TARGET_OS         = "linux"
>>> MACHINE           = "virtex5"
>>> DISTRO            = "poky"
>>> DISTRO_VERSION    = "1.2+snapshot-20120630"
>>> TUNE_FEATURES     = "m32 fpu-soft ppc440"
>>> TARGET_FPU        = "soft"
>>> meta
>>> meta-yocto        = "master:4d48398798c898c5db08294ba64d9bfc7daca19c"
>>> meta-oe           = "master:3eb5f6eecf6faf7b2701f94b12cf779350d31acc"
>>> meta-xilinx       = "master:c977270d6f0608cc5fa83f57254202713af37be0"
>> 
>> I traced the reason for the dtb file not build due to the following commit:
>> 
>> http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=8c904eb643ad8ca1bc29cb2d870a80b355dcb341
>> 
>> Should I specify DTS_FILE in order to get my recipe to build the *.dtb?
>> 
> 
> you need to define KERNEL_DEVICETREE = "<yourdtbfile>

I tried various combinations, but all of them did not yield a dtb file.

KERNEL_DEVICETREE = "virtex440-ml507.dtb"  (as you suggested in your original email, but I guess it might have been a typo? should be .dts?)
KERNEL_DEVICETREE = "virtex440-ml507.dts"
KERNEL_DEVICETREE = "arch/powerpc/boot/dts/virtex440-ml507.dts"

How exactly should I specify the .dts to get yocto to generate the .dtb file?

Best regards,

Elvis Dowson