The following example shows you how to edit FSBL/PMUFW settings.
setws workspace
app create -name a53_app -hw zcu102 -os standalone -proc psu_cortexa53_0
#If you want to modify anything in zynqmp_fsbl domain use below command to active that domain
domain active zynqmp_fsbl
#If you want to modify anything in zynqmp_pmufw domain use below command to active that domain
domain active zynqmp_pmufw
#configure the BSP settings for boot domain like FSBL or PMUFW
bsp config -append compiler_flags -DFSBL_DEBUG_INFO
platform generate