Assuming I have created my software and I have prototyped it on imx6 or raspberry pi, and I want to take it to the next level, that is, to put the software a costume board which I created for production. The question is, how do I create the BSP and all other files required by yocto or poky to run Linux on my boar?
You can check article “Building Yocto for Raspberry Pi / Creating Embedded Linux for RPi using Yocto” which will give you steps for how you can build complete BSP for Raspberry Pi
Hope this will help. Thanks