1fdt addr ${fdt_addr} && fdt get value bootargs /chosen bootargs 2fatload mmc 0:1 ${kernel_addr_r} @@KERNEL_IMAGETYPE@@ 3if test ! -e mmc 0:1 uboot.env; then saveenv; fi; 4@@KERNEL_BOOTCMD@@ ${kernel_addr_r} - ${fdt_addr} 5