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hsyn's avatar
hsyn
Icon for New Contributor rankNew Contributor
2 years ago

CYCLONE V HPS SDRAM - Enable with Hardware Diagnostic Option in bsp-editor

Hello,

I want to perform a DDR RAM test with u-boot for my PCB that has a CYCLONE V. My PCB has 256MiB memory.

When I select HARDWARE_DIAGNOSTIC in bsp-editor.exe for this purpose, I receive a warning as follows: "At least 1GB memory required."

Nevertheless, I can still generate and create the preloader. However, I encounter an error as shown in the attached image.

What approach should I follow to test DDR systems below 1GB?

Thanks.

4 Replies

  • hsyn's avatar
    hsyn
    Icon for New Contributor rankNew Contributor
    2 years ago

    In the "Cyclone V Hard Processor System Technical Reference Manual" PDF, there is a sample code provided for testing SDRAM with the preloader.

    I have attached the image below.

    When I executed this code, I encountered a verification error. Upon inspecting the code, it seems that they might have incorrectly incremented the "cnt" value in the "read" and "write" loops.

    It worked correctly when I modified the "for" loop in the "read" section to be "cnt++".

    Is it normal to have errors in the code provided in the PDF, or am I misinterpreting certain parts of it?

  • aikeu's avatar
    aikeu
    Icon for Regular Contributor rankRegular Contributor
    2 years ago

    Hi ieeeHuseyin,


    I do not fully understand the test algorithment yet. Anyway the cnt = cnt++ seems like not right to me as well. The process of writing data_temp(Rotate_Right) should be the same as the process to compared with expected_data(Rotate_Right).

    If you can oberve the same writen memory status pattern as shown in the expected example results in the document then I think it should be correct.


    Thanks.

    Regards,

    Aik Eu


  • aikeu's avatar
    aikeu
    Icon for Regular Contributor rankRegular Contributor
    2 years ago

    Hi ieeeHuseyin,


    I will close this thread if no further question.


    Thanks.

    Regards,

    Aik Eu


  • aikeu's avatar
    aikeu
    Icon for Regular Contributor rankRegular Contributor
    2 years ago

    Hi ieeeHuseyin,


    We do not receive any response from you to the previous question/reply/answer that I have provided. This thread will be transitioned to community support. If you have a new question, feel free to open a new thread to get the support from Intel experts. Otherwise, the community users will continue to help you on this thread. Thank you.


    p/s: If any answer from the community or Intel Support are helpful, please feel free to give best answer or rate 4/5 survey.


    Thanks.

    Regards,

    Aik Eu