12-10-2019 10:32 PM
I realize that this problem has been addressed before on this forum. I have examined the previous posts and have not found a solution.
The board in question is the zcu104 develpment board.
I have been able to communicate with the board when the board is booted up from the SD card. No problem using putty. Also no problem using the SDK to connect via the SDK terminal. Therefore, I expect that the problem is not in the cable.
Problem occurs when I attempt to run the Hello_World demo and "run as-> Launch on hardware".
I have the SW connected for JTAG as ON, ON, ON, ON. Although I have tried in other configurations with no luck.
Some of the other responses to posts have suggested to use the iMPACT application but it is not included in the Xilinx lab Tools installation (which I have done) and through the reading I have found that it is not available for those using Ubuntu or, I think, Linux.
Are there other suggestions?
Thank You
Tom
12-13-2019 10:06 AM
Watari,
Thank you again for your support. This turned out to be a cable driver issue.
I found a good description for how to install the cable driver at https://www.xilinx.com/support/answers/59128.html
Tom
12-10-2019 10:40 PM - edited 12-10-2019 10:41 PM
Hi @miner_tom
I guess it seems CPU idle issue.
Would you refer AR #69143 ?
https://www.xilinx.com/support/answers/69143.html
Best regards,
12-11-2019 08:29 AM - edited 12-11-2019 08:34 AM
watari,
Thank you for the reply.
I have read the link that you shared, https://www.xilinx.com/support/answers/69143.html , as well as others in that vein, https://forums.xilinx.com/t5/Embedded-Linux/About-Linux-CPU-idle-disable-AR-69143/td-p/1037783 , and they appear to be referring to events occuring when the linux kernel boots.
I expect that the implication is that when attempting to run, for example, the "Hello_World" program via the SDK, a linux kernel must already be running, having been booted from the SD Card. Is that correct? Therefore, SW6, as shown below must be OFF, OFF, OFF, ON, as opposed to the JTAG configuration of ON, ON, ON, ON.
If that is correct then I expect that I can perform the configuration and build of a new BOOT.BIN with the BSP for the zcu104, having already done a build as a test to see if I could do it.
What about when booting via jtag (or do I misunderstand)? Are there ways to send a kernel directly to the DDR? I have seen posts where iMPACT is used but as I mentioned in the previous post, I don't have access to that.
Oh, one more thing if I might: In the link that you shared, there was reference to a prompt at "zynqMP". I am not sure that I know what that means.
Thank You
Tom
12-12-2019 11:18 AM
12-13-2019 10:06 AM
Watari,
Thank you again for your support. This turned out to be a cable driver issue.
I found a good description for how to install the cable driver at https://www.xilinx.com/support/answers/59128.html
Tom