=> nand bad
Device 0 bad blocks:
04760000
06000000
07fe0000
=> nand dump 04760000
Page 04760000 dump:
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
nand 00 是坏块,初始化是 FF