Partitions/blocks of 2GB emmc at BBB Board

  1. I want to know the Partitions/blocks of 2GB emmc at BBB Board
    ex,
    Spl Start Address…End Address
    Uboot
    Kernel
    rootfs

2.how can i update these blocks use uboot??
ex,

U-Boot# loadb 0x82000000
Download MLO/Uboot to SDRAM
U-Boot# nand erase 0x0 0x20000
U-Boot# nand write 0x82000000 0x0 0x20000

I want to know the Partitions/blocks of 2GB emmc at BBB Board
ex,
Spl Start Address…End Address
Uboot
Kernel
rootfs
I dont think there is any command to see . U can display the emmc contents and see which memory location it is written and see usually u-boot is flashed at multiple of 128 bytes
and kernel at adsress 0x82000000