FPGA prototyping with Ariane core has "Test FAILED" issue ("fpga-run-linux", vcu128 board)

[AltiumHanChou]

Describe the bug

I use vcu128 and test this tutorial. In the section "FPGA prototyping" has "Test FAILED" issue when I run the command "fpga-run-linux".

Expected behavior

I got validation pass information when I run the command TEST_PROGRAM=./soft-build/<cpu>/baremetal/mac_stratus.exe make fpga-run

log:

ESP-Ariane first-stage boot loader                                              

Scanning device tree...                                                         
[probe] sld,mac_stratus.0 registered                                            
        Address   : 0x60010000                                                  
        Interrupt : 6                                                           
**************** sld,mac_stratus.0 ****************                             
  memory buffer base-address = 0xa0100cd0                                       
  ptable = 0xa0107280                                                           
  nchunk = 1                                                                    
  --------------------                                                          
  Generate input...                                                             
  -> Non-coherent DMA                                                           
  Start...                                                                      
  Done                                                                          
  validating...                                                                 
  ... PASS      

But I run the command TEST_PROGRAM=./soft-build/<cpu>/baremetal/mac_stratus.exe make fpga-run-linux. I got "Test FAILED" when I run the program ./mac_stratus.exe.

log:

====== mac_stratus.0 ======                                                     

  .mac_n = 1                                                                    
  .mac_vec = 100                                                                
  .mac_len = 64                                                                 

  ** START **                                                                   
  > Test time: 10188053 ns                                                      
    - mac_stratus.0 time: 888373 ns                                             

  ** DONE **                                                                    
+ Test FAILED                                                                   

====== mac_stratus.0 ====== 

Desktop (please complete the following information):

• OS: Ubuntu 18.04
• CAD tools versions: Xilinx Vivado 2019.2, STRATUS_19.12.100

Additional context

Because It pass without run the linux on FPGA, I assume it could be something go wrong when I run make linux. ( I am look into the part which about make linux . If I fix something I will update here)

[paulmnt]

hi @AltiumHanChou

When you run linux, there's no need to specify the TEST_PROGRAM. For that target, in fact, the main program that executes is Linux itself.

Since you have correct execution on FPGA, it's unlikely that you have a hardware bug. I would check the Linux application code. The reason for failure could be wrong computation of the golden output, or wrong configuration of the accelerator.

The Linux application should be located at the path eps/accelerators/stratus_hls/mac_stratus/sw/linux/app.

If you can't spot the issue, I would recommend printing some of the output values, as well as the expected golden output. The result of that print should help you debug.

Remember, every time you change the application, to recompile it and update the Linux root file system with the following make targets before rebooting.

make mac_stratus-app
make linux

Alternatively, you can simply recompile the app with make mac_stratus-app and use scp to copy it into the running ESP instance. If the problem is just a software bug, in fact, you most likely don't need to reboot to test your changes to the application. The compiled application is copied into esp/socs/<design>/soft-build/ariane/sysroot/applications/test/mac_stratus.exe and the IP of the ESP instance can be obtained using ifconfig from the UART interface.

[davide-giri]

Hi @AltiumHanChou, were you able to get a correct validation of the mac accelerator Linux application? Has this issue been resolved?

Thanks!

[AltiumHanChou]

Hi ~

Yes. I think all of the issue has been resolved. All of test in new release is pass. Now I am trying to make and test some different “mac” in ESP platform . Thank you for your help. That was very helpful to me to do these research.

Altium han chou

Davide Giri @.***>於 2021年5月26日 週三，下午10:31寫道：

Hi @AltiumHanChou https://github.com/AltiumHanChou, were you able to get a correct validation of the mac accelerator Linux application? Has this issue been resolved?

Thanks!

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub https://github.com/sld-columbia/esp/issues/102#issuecomment-848818733, or unsubscribe https://github.com/notifications/unsubscribe-auth/APZ6NVAH7LAZZBFX4BCS7LTTPUA2XANCNFSM423P3PXQ .

[davide-giri]

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