ZYNQ 从nand启动Linux系统、烧写总是失败？

我用矿机板子4205想从NAND启动Linux系统、可是在下载的时候出了问题、、

要么提示

要么就提示：

CortexA9 Processor Configuration
' A& Z0 t5 b+ K- h4 y7 m-------------------------------------
0 @) z: V) j. y% K9 y/ DVersion.............................0x00000003
7 S% U* u) A$ X; W1 o$ y" qUser ID.............................0x00000000
5 f6 o0 V/ r9 k$ @9 HNo of PC Breakpoints................6% ~# n9 Y+ r3 r5 ?* Q9 u
No of Addr/Data Watchpoints.........4
2 w+ R! E9 G9 L" Q0 F+ AProcessor Reset .... DONE
! @: b1 U! H& s# z% {$ Y3 IProcessor Reset .... DONE
( @- Z2 j. }! ?2 f  l. m4 jPrompt timeout.
5 c5 g8 a+ |: W& `6 I. M; ~" e* N! @Problem in running uboot- E4 t3 d; h. L- f0 a) |
Intialization of XMD failed.

ERROR: Flash Operation Failed

有没有大佬知道原因？