Hi andrewolokita,
Thanks for quick response. I did what you told me (sf probe with no parameter , using a new version uboot -2013R1), but the same result...
With regard to the signals : RFU and RFU2 , for the board is not designed by me, I am mainly responsible for
the software , i guess it just referred to the datasheet .
I suppose themost possible problem lies in the board configuration file (include/configs/tjctl548.h), mainly the spi flash part or memory part ...
By the way, had you ever before done similiar work on uboot spi flash ,I would appreciate your valuable suggestions.
Thanks.