CycloneV U-Boot FPGA Load Fails: Code -6

[JFrye2]

Hello, I am trying to program the FPGA of my CycloneV from U-Boot. It appears to be failing and I am not sure why. The exact u-boot commands are

echo --- Programming FPGA --- echo -----Loading image------ # load rbf from FAT partition into memory fatload mmc 0:1 ${fpgadata} socfpga.rbf; # program FPGA echo -----Print filesize----- printenv filesize; echo -----Program FPGA------- fpga load 0 ${fpgadata} ${filesize}; # enable HPS-to-FPGA, FPGA-to-HPS, LWHPS-to-FPGA bridges echo -----Enabling IFs-------- bridge enable;

What I am seeing during boot is the following

Hit any key to stop autoboot: 0 449 bytes read in 3 ms (145.5 KiB/s) ## Executing script at 02000000 --- Programming FPGA --- -----Loading image------ 7007204 bytes read in 366 ms (18.3 MiB/s) -----Print filesize----- filesize=6aebe4 -----Program FPGA------- Command 'load' failed: Error -6 -----Enabling IFs-------- switch to partitions #0, OK mmc0 is current device

What does the error code -6 mean? When I look at FPGA manager status in Linux, it prints the following.

root@cyclone5:~# cat /sys/class/fpga_manager/fpga0/state write init

[Ahmed_H_Intel1]

Is this based on the GHRD? or custom design.

[JFrye2]

@AhmedH_Intel​ , sorry for the delayed response. This is a custom design. I tried putting my question out on the u-boot mailing list and they redirected me back here since Intel maintains https://github.com/altera-opensource/u-boot-socfpga

I am targetting DE1-SoC with the u-boot software from the repo above.

I tried socfpga_cyclone5_defconfig and that led to the programming error.

I also tried socfpga_de1_soc_defconfig and I didnt even get console messages when I booted when I used that configuration.

I can send you a zip of the hardware design if needed.

Thanks.

[Ahmed_H_Intel1]

Hi,

Are you trying to store the kernel or the FPGA image on the flash? (like Nand flash)

I saw this issue before while storing them on a NAND flash. We recommend storing the file system on NAND.

Please confirm.

[sf69]

with the Cyclone V SOC Development Board

i have the same issue, loading from u-boot the rbf file:

=> dhcp ${loadaddr} soc_system.rbf
.....
Bytes transferred = 7007204 (6aebe4 hex)
=> fpga load 0 ${loadaddr} $filesize;
Command 'load' failed: Error -6

But if i compress the rbf file:

=> dhcp ${loadaddr} soc_system_compressed.rbf
Bytes transferred = 3051080 (2e8e48 hex)
=> fpga load 0 ${loadaddr} $filesize;

it works

is there a size limit somewhere ?

thanks

[MV]

I think this is a good question and begs for an answer.
Running into a similar issue and also speculating about a size limit of .rbf file that perhaps  u-boot or the FPGA driver is able to handle.
Anyone can shed light on this?
Thanks!