U-Boot 2014.04 (Sep 26 2017 - 12:17:58)

CPU:   Freescale i.MX6SOLO rev1.3 at 792 MHz
CPU:   Temperature 56 C, calibration data: 0x59250c69
Reset cause: POR
Board: SK-iMX6-OEM
DRAM:  512 MiB
NAND:  1024 MiB
MMC:   FSL_SDHC: 0, FSL_SDHC: 1
*** Warning - bad CRC, using default environment

Net:   FEC
Normal Boot
Hit any key to stop autoboot:  0
u-boot > nand bad

Device 0 bad blocks:
  27f20000
  2d5c0000
  303e0000
  33f60000
  3ef60000
u-boot >