AM335x with Yocto Build System

Radiya Dhaval

Hi,

I am working with BeagleBone Black with Yocto build system and i have created my own layer name as meta-Opensystem in yocto. For the creation of the images for the board, i have the command like :

user@host:~/yocto/poky/build$ bitbake core-image-base
 
and it creates MLO-beaglebone, u-boot-beaglebone.img, uImage, core-image-base-begalebone.tar.bz2 in the yocto/poky/build/tmp/deploy/images/beaglebone
but for the custmize image creation for my layer, i have command like : 
 
user@host:~/yocto/poky/build$ bitbake Opensystem-image
 
but by this command, the uImage is not available in the root file system i.e in boot folder of the Opensystem-image-begalebone.tar.bz2.
So, please suggest the steps to link the uImage in root file system in my cusmize image.
Thanks in advanced.
 

over 10 years ago

0 Biser Gatchev-XID over 10 years ago

TI__Guru**** 393215 points

Hi,

I will ask the software team to comment.

0 Kemal R. Shakir over 10 years ago in reply to Biser Gatchev-XID

TI__Guru 55345 points

Hello Radiya,

You should have packagegroup to prepare and copy this uImage. Please, use sources/oe-core/meta/recipes-core/images/core-image-base.bb layer which inherit sources/oe-core/meta/classes/core-image.bbclass as reference.

Best regards,
Kemal

0 Radiya Dhaval over 10 years ago in reply to Kemal R. Shakir

Intellectual 490 points

As per your suggestion, in my source/meta-Opensystem/classes/Opensystem-image.bbclass must be present and source/meta-Opensystem/recipes-core/images/Opensystem.bb layer inherit and copy uImage from that classes. Correct or not please reply.

Thank you.

0 Kemal R. Shakir over 10 years ago in reply to Radiya Dhaval

TI__Guru 55345 points

More likely not. Try this CORE_IMAGE_EXTRA_INSTALL[doc] = "Specifies the list of packages to be added to the image. You should only set this variable in the conf/local.conf file in the Build Directory." documented here sources/oe-core/meta/conf/documentation.conf

0 Radiya Dhaval over 10 years ago in reply to Kemal R. Shakir

Intellectual 490 points

Hi,

But Try with CORE_IMAGE_EXTRA_INSTALL[doc] = "Specifies the list of packages" will add the packages to core-image-base-begalebone.tar.bz2 root file system but my concern is to add uImage in boot directory of Opensystem-image-begalebone.tar.bz2 in my custom filesystem and the extra packages like openssh is added to my customize file sysem. So, i want to add uImage, not extra packages because when i booted the beaglebone with my customize file system, it stops at u-boot prompt and tells me that

** File not found /boot/uImage **

So, please suggest.

0 Kemal R. Shakir over 10 years ago in reply to Radiya Dhaval

TI__Guru 55345 points

Which SDK version are you trying to build? The uImage format is not used since SDK 6. Try to find out how the bitbake core-image-base command copies the uImage to the rootfs and use its approach.

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AM335x with Yocto Build System