what is the "kernel" start_addr in NAND

[xiangfu]

root at GTA02:~# cat /proc/mtd
dev:    size   erasesize  name
mtd0: 00200000 00010000 "physmap-flash.0"
mtd1: 00040000 00020000 "u-boot"
mtd2: 00040000 00020000 "u-boot_env"
mtd3: 00800000 00020000 "kernel"
mtd4: 000a0000 00020000 "splash"
mtd5: 00040000 00020000 "factory"
mtd6: 0f6a0000 00020000 "rootfs"

what is the "kernel" start_addr in NAND.
is that is 00200000(physmap-flash.0) + 00040000(u-boot) + 00040000(u-boot_env")=2080000