To execute menuconfig for U-Boot type
bitbake u-boot -c devshell
make menuconfig
NAND erase, write commands from U-Boot
- Partitions checking
mtdpart
2. Partition erase
nand.erase part NAND.partition-name
nand.erase chip
3. Write partition
nand write ${loadaddr} NAND.partition-name ${filesize}