zybo factory settings

[yohboy]

Hi,

I had a problem yesterday with my zybo, I'm unable to load bitstream and boot linux on it. It was working very well. As I was not sure the problem was hardware, I took a new zybo and try to load bitstream and boot on linux. It is working.

So I don't know what's the problem with my old zybo.

Do you know what could be the cause ?

This is the error when I try to boot:

U-Boot SPL 2016.03 (May 04 2017 - 11:40:33)                                                         
mmc boot                                                                                            
Trying to boot from MMC                                                                             
reading bitstream                                                                                   
reading bitstream                                                                                   
spl: fail to load bitstream, err - -1                                                               
spl: retry fpga_load                                                                                
fpga_load: Null buffer.                                                                             
reading system.dtb                                                                                  
spl_load_image_fat_os: error reading image system.dtb, err - -1                                     
reading u-boot-dtb.img                                                                              
reading u-boot-dtb.img                                                                              
### ERROR ### Please RESET the board ### 

Since the bitstream fail to load, it is normal that the sequence fails.

Maybe I can recover some factory settings on the zybo to erase some mistake in memory ?

regards,

Yohan

[Ciprian]

Hi yohboy,

So.... are you booting from the QSPI (I assume yes) or from the SD?

If you are trying to boot the Linux from the QSPI which is delivered with the board and the QSPI memory has been overwritten you could try this:

https://forum.digilentinc.com/topic/4129-how-to-recover-flash-contnet-in-qspi-zybo/#comment-15945

Regards,

Cipi

[yohboy]

Hi Ciprian,

I'm booting from SD, and load all the files to boot on ramdisk.

So i'm not sure QSPI will be the problem, am I right ?

Here the uenv.txt I use to boot :

uenvcmd=set serverip 192.168.5.10 && set ipaddr 192.168.5.15 && tftpboot 0x2000000 uImage&& tftpboot 0x3000000 core-image-minimal-zybo-gateway.rootfs.cpio.gz.u-boot && tftpboot 0x2A00000 system.dtb && bootm 0x2000000 0x3000000 0x2A00000

But the problem seems to be before, when the spl try to load the bitstream from SD.

regards,

Yohan