f1c200 的 nand-flash怎么分开烧录 uboot dtb kernel

[s45123456789]

f1c200s mangopi r3的nand-flash 用 sunxi-fel 分开烧录 uboot dtb kernel 的地址是多少呀？因为修改设备树的时候想单独烧录dtb，不想整个重烧img

[whycan]

board/allwinner/suniv-f1c100s/genimage-nand.cfg

flash nand-128M {
        pebsize = 128K
        numpebs = 1024
        minimum-io-unit-size = 2048
}

image sysimage-nand.img {
        flash {
        }

        flashtype = "nand-128M"

        partition u-boot {
                image = "u-boot-sunxi-with-nand-spl.bin"
                size = 512K
        }

        partition dtb {
                offset = 0x80000
                image = "devicetree.dtb"
                size = 128K
        }

        partition kernel {
                offset = 0x100000
                image = "zImage"
                size = 7M
        }

        partition rom {
                offset = 0x800000
                image = "rootfs.squashfs"
        }
}