Zynq Ultrascale+ Linux Hangs with JTAG connected

[josh_tyler]

I have Linux booting from SD card on a custom Zynq Ultrascale+ PCB. Linux boots fine without JTAG connected, but if open the Vivado hardware manger and connect a Xilinx platform cable II, linux hangs on boot with the message:

"XPFW: DAP RPU WAKE.. DONE"

So it looks like it's related to the platform management unit, since this message originates from the pmufw (https://github.com/Xilinx/embeddedsw/blob/master/lib/sw_apps/zynqmp_pmufw/src/xpfw_mod_dap.c), but I'm not sure how to debug further. Any suggestions?

[aravindb · Accepted solution]

Hi Josh,

Looks this is a known issue.

Could you please check this AR: https://www.xilinx.com/support/answers/69143.html

Thanks & Regards

Aravind

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[josh_tyler]

Yes, that solved it, thank you!