Re build u-boot file and linux kernel

Hi,

I want to re build boot.bit, uimage and the devicetree. Looking in xilinx repositories i do not find a file named zynq_pynqz1_deconfig for example, or a devicetree.dts for pynq.

How can i follow the steps to rebuild the boot partition, or where can i find the files?

After using the sdbuild flow, you should be able to find the petalinux project in sdbuild/build//petalinux_project. There you should be able to find everything if you are familiar with petalinux.