root@lede:/# cat /proc/mtd
dev:    size   erasesize  name
mtd0: 00020000 00010000 "u-boot"
mtd1: 0014e2c0 00010000 "kernel"
mtd2: 00e81d40 00010000 "rootfs"
mtd3: 00ca0000 00010000 "rootfs_data"
mtd4: 00010000 00010000 "art"
mtd5: 00fd0000 00010000 "firmware"

[    0.555233] 0x000000000000-0x000000020000 : "u-boot"
[    0.562211] 0x000000020000-0x00000016e2c0 : "kernel"
[    0.568005] 0x00000016e2c0-0x000000ff0000 : "rootfs"
[    0.584028] 0x000000350000-0x000000ff0000 : "rootfs_data"
[    0.591677] 0x000000ff0000-0x000001000000 : "art"
[    0.597222] 0x000000020000-0x000000ff0000 : "firmware"