The source code of FSBL in platform can be
modified in place. Building platform again compiles the FSBL in platform. For AMD Zynq™
UltraScale+™ MPSoC, the FSBL source code is located in <Platform>/zynqmp_fsbl and for AMD Zynq™ 7000, the FSBL source code is located in <Platform>/zynq_fsbl. After you modify the source code, build the
platform again to compile the FSBL in platform.