Problem dumping NOR flash memory on LS1021A-TWR board

[jayarajrajappan]

I'm using LS1021A-TWR board. I'm booting from SD card and trying to dump the NOR flash memory using "md" command. However, I'm getting the following unexpected values. How do I recover the NOR flash from this?

Also, is there a way to reset the board to the factory default settings?

=> md 60000000

00000000: e59ff018 e59ff018 e59ff018 e59ff018 ................

00000010: e59ff018 e59ff018 e59ff018 e59ff018    ................

00000020: 00001ec0 0000180c 00001850 00001894    ........P.......

00000030: 000018d8 0000191c 00001960 000019a4    ........`.......

00000040: 45535546 54544120 00000052 52545023    FUSE ATTR...#PTR

00000050: 00000000 4f525245 20202052 00000000    ....ERROR   ....

00000060: 54495257 004e4554 6d697250 676d4920    WRITTEN.Prim Img

00000070: 69616620 6572756c 00000000 20636553     failure....Sec

00000080: 20676d49 69676562 0000006e 616e6946    Img begin...Fina

00000090: 7245206c 20726f72 00202020 65736552    l Error    .Rese

000000a0: 00000074 52424924 0000005f 70657453    t...$IBR_...Step

000000b0: 20202031 00000000 204d554e 00434553    1   ....NUM SEC.

000000c0: 70657453 20202032 00000000 70657453    Step2   ....Step

000000d0: 20202033 00000000 70657453 20202035    3   ....Step5

000000e0: 00000000 70657453 20202036 00000000    ....Step6   ....

000000f0: 70657453 20202037 00000000 70657453    Step7   ....Step

[sinanakman]

Hi Jayaraj

If your NOR was mistakenly overwritten (perhaps

by another user), you can reprogram your NOR

with the correct image again by using u-boot commands.

Regards

Sinan Akman

[jayarajrajappan]

Hi,

I figured this out. It was not a case of my NOR getting overwritten. For some reason, due to the RCW that I was using to boot from SD card, PBL didn't seem to have initialized the IFC, which was causing this issue. Once I used a good image (u-boot-with-spl-pbl.bin) with a proper RCW to boot from SD, I was able to dump the contents of the NOR flash correctly.

Thanks.