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DStream does not recognize Zedboard

Former Member

Hi,

I would like to use arm ds5 tools to debug my zedboard.

I followed tutorials on this website (http://zedboard.org/reference-designs-categories/debugging-arm-processor-systems-using-arm-ds-5) to try configuring DS-5 for ZED.

So I made hardware connection as indicated in the tutorial one, that is to say connect the ribbon cable and set the jumper correctly. Then the Debug Hardware Configuration of ARM DS5 is not able to autoconfigure my device (tutorial 2), and I get the following message :
"Auto configure failed. Check the debug Hardware connection with the target or try using a lower fixed frequency."

However I am able to recognize the device with a jtag probe from xilinx and with the Vivado Hardware Manager.

Any idea of my problem with my dstream ?

  • 0

    HI Clement,

    I have not tried this recently, but I wanted to first make sure that your board connections are correct.

    Are you using our Processor Debug Adapter (AES-ZBDB-ADPT-G) to connect DSTREAM to ZedBoard's 14-pin (PC4) header at J15?

    http://www.em.avnet.com/en-us/design/drc/Pages/ZedBoard-Processor-Debug-Adapter.aspx

    Some DS-5 customers try to connect their DSTREAM to the Zynq XADC header at J2 which is an incorrect connection.

    Also, to connect to the ARM DAP, I believe that Zynq needs to be configured for cascaded JTAG boot mode(JP7-JP11 set to GND).

    Regards,

    -Kevin

  • 0 in reply to zedhed

    Yes I am using the Processor Debug Adapter to connect DSTREAM to Zedboard's 14-pin and I do not use the Zynq XADC header. The Jumper JP7 to JP11 are all set to GND.

    Moreover I have tried to use DSTREAM with another Zedboard, thinking some of zedboard part was broken, and I still have the same problem.

  • 0 in reply to Former Member

    I used the same settings and hit exactly the same bahavior as you do. This is strange. Is there anyone succeeded in using DS-5 to connect to the Zedboard before?

  • 0

    Here are some news !

    First of all if I boot the Zedboard in independant jtag, then the dstream is able to see something (fpga) but just unable to identify it (seems normally).

    I connected the PJTAG of Zynq and route it on an FMC card. I boot the Zedboard in independant jtag, load the bitstream to make the pjtag available on the FMC card, then the DStream is able to recognize the processor !!!

    That's lead me to wonder : has someone really achieved to use dstream in cascaded jtag, using the Processor Debug Adapter (AES-ZBDB-ADPT-G) and the JTAG connector of the Zedboard (USB or 14-pin jtag connector) ?

  • 0

    Hi Calimero,

    Yes, we have demonstrated that a connection can be established with ZedBoard using cascaded JTAG under ARM DS-5 version 5.14 when we developed this training.  I believe that version of DS-5 tools required a connection to be setup manually and this is covered in Lab 2 of our hands-on training.

    http://microzed.org/course/debugging-arm-processor-systems

    Also, this connection setup process is covered in this ARM blog post here:

    https://community.arm.com/groups/tools/blog/2013/11/01/new-platform-bring-up-with-ds-5

    ARM DS-5 versions 5.15 and later were supposed to have built in connection definitions for ZedBoard.  I think we tested this in version 5.15 but perhaps not in the subsequent versions.

    I don't have a good explanation as to why the ARM DAP is not automatically connected on earlier versions when using a standard Cortex-A9 connection.  My best explanation, and possibly incorrect, is that the ARM DAP appears first on the chain but the PL PCAP appears second which confuses the DS-5 tools standard Cortex-A9 connection configurations.

    I see you routed the PJTAG interface out to the FMC card.  Alternatively, you can split the JTAG chain and route the PJTAG interface to Pmod JE1 and use the 6-pin side connector on Processor Debug Adapter (AES-ZBDB-ADPT-G) to connect DSTREAM directly to the DAP that way.  You will still need to load a PS configuration (to set the MIO) but you will not need to use the FMC or load a PL to achieve that connection to the ARM DAP.

    Regards,

    -Kevin