bootcmd=booti ${kernel_addr_r} - ${fdt_addr_r}
uenvcmd=fatload mmc 0:1 ${kernel_addr_r} Image; fatload mmc 0:1 ${fdt_addr_r} rzboard.dtb
bootargs=root=/dev/mmcblk0p2 rw rootfstype=ext4 earlyprintk console=ttyS0,115200 rootwait earlycon clk_ignore_unused debug