linux crash after PL load

jeffalred,

Zynq is designed around the idea that the ARM cores are the center of the IC.  With that being said, the PS must be up and running before the PL can be programmed.

Can you describe further your setup and configuration of how you went about creating your project and what you loaded into the PL?

I used the out of the box setup for the zed. Standard Linux demo.

Then I built a bitfile (using the UCF from this website) that simply sets the LEDs based. On the switches. Built it in ISE and created a BIN file with promgen. With the PS up and running, I loaded the bitfile over jtag. The Linux terminal window quit responding as well as ping stopped responding. Same thing when I used local Linux commands to load. Each time the Linux terminal stopped but the programmed functionality in PL worked as expected.

I thought the idea was that the processor cores are not dependent on the PL.

The PS is not dependent on the on the PL.  I am going to make the assumption that the Linux kernel is trying to talk to the AXI peripherals on a regular interval, and when you reconfigure the PL it crashes because it can't talk.

I'll take a look and see what I can come up with for a 'proper procedure'.

The PS is not dependent on the on the PL.  I am going to make the assumption that the Linux kernel is trying to talk to the AXI peripherals on a regular interval, and when you reconfigure the PL it crashes because it can't talk.

I'll take a look and see what I can come up with for a 'proper procedure'.

Is it possible that one of the kernel modules is polling on the AXI?

I have no problem putting in the minimal logic that would allow linux to stay alive. Just need to know what that minimal logic is.

Thanks for checking into it.

I agree that it is probably something along those lines.  That the OLED module is pinging the SPI bus - or something like that.  Can you try and unload the OLED module by executing the script in /usr/bin/oled_unload?