about making de10-nano board preloader issue

[Altera_Forum]

hello..everybody 

i am using de10-nano board to do something , when i want to make preloader, appearing some error :  lowlevel_init.S: Assembler messages: lowlevel_init.S:241: Error: selected processor does not support `dsb' in ARM mode lowlevel_init.S:242: Error: selected processor does not support `isb' in ARM mode lowlevel_init.S:276: Error: selected processor does not support `dsb' in ARM mode lowlevel_init.S:277: Error: selected processor does not support `isb' in ARM mode /cygdrive/g/my_work/fpga/de10_nano_soc_ghrd/software/spl_bsp/uboot-socfpga/config.mk:330: recipe for target '/cygdrive/g/my_work/fpga/de10_nano_soc_ghrd/software/spl_bsp/uboot-socfpga/spl/arch/arm/cpu/armv7/socfpga/lowlevel_init.o' failed make[3]: *** [/cygdrive/g/my_work/fpga/de10_nano_soc_ghrd/software/spl_bsp/uboot-socfpga/spl/arch/arm/cpu/armv7/socfpga/lowlevel_init.o] Error 1 make[3]: Leaving directory '/cygdrive/g/my_work/fpga/de10_nano_soc_ghrd/software/spl_bsp/uboot-socfpga/arch/arm/cpu/armv7/socfpga' Makefile:184: recipe for target '/cygdrive/g/my_work/fpga/de10_nano_soc_ghrd/software/spl_bsp/uboot-socfpga/spl/arch/arm/cpu/armv7/socfpga/libsocfpga.o' failed make[2]: *** [/cygdrive/g/my_work/fpga/de10_nano_soc_ghrd/software/spl_bsp/uboot-socfpga/spl/arch/arm/cpu/armv7/socfpga/libsocfpga.o] Error 2 make[2]: Leaving directory '/cygdrive/g/my_work/fpga/de10_nano_soc_ghrd/software/spl_bsp/uboot-socfpga/spl' Makefile:611: recipe for target 'spl/u-boot-spl.bin' failed make[1]: *** [spl/u-boot-spl.bin] Error 2 make[1]: Leaving directory '/cygdrive/g/my_work/fpga/de10_nano_soc_ghrd/software/spl_bsp/uboot-socfpga' make: *** [uboot-socfpga/spl/u-boot-spl.bin] Error 2  how can i solve this issue? is there any noe can help me?