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Porting Bitbake & Linux

markopa - July 12, 2010

Hi all, In few week we will receive our custom board from production services. I have to start porting uBoot to our platform and also I have to start adopt some linux drivers to suit our platform characteristics. Before starting a more articulated discussion could somebody shortly describe how to take out uBoot from the bb build process modify the needed files and then re-integrate our custom uBoot to the bb process ? Marko
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Porting Bitbake & Linux

Submitted by jpuhlman on July 12, 2010 - 12:32pm.
I would assume the most forward way would be to take a u-boot already done that is close to your platform, run bitbake -c patch <u-boot-recipe>. The results should live in $(bitbake -e <u-boot-recipe> | grep ^S=). Take that as your starting point. Make what ever changes you need to make and generate a patch from the orginial. Copy <u-boot-recipe> to u-boot-<board name>.bb Add it to your custom directory and add the patch for your changes to the new u-boot recipe. From there I think you should be golden.

Porting Bitbake &#38; Linux

Submitted by markopa on July 13, 2010 - 9:00am.
I've also assumed something like that. At least this should be the final result. However in the developing process I plan to copy the uboot supplied by MV which should reside in $(bitbake -e <u-boot-recipe> | grep ^S=) and build it manually. When the port will be done I plan to make patches against what is supplied by MV and build our final uboot through the bitbake process. Does this make sense to you ? Marko

Porting Bitbake &#38; Linux

Submitted by jpuhlman on July 13, 2010 - 12:41pm.
Yup. Sounds reasonable to me.