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Waiting for PHY auto negotiation to complete..

Former Member

Hello everyone,

i use following configuration:
SDK 2014.4
Vivado 2014.4
Microzed Board
Ubuntu 14.04.2 LTS
HS2 Rev. A

I try to boot a petalinux via jtag. I used the board bringup pdf (UG980) to build petalinux. Everything works fine.

If i boot from a SD card, everything is ok.
After that i used the command
$ petalinux-package --prebuilt --fpga <FPGA bitstream>

Now i'd like to boot over jtag:
petalinux-boot --jtag --prebuilt 3

Now it stopps by the following:


U-Boot 2014.07 (Apr 15 2015 - 09:50:48)

DRAM:  ECC disabled 1 GiB
MMC:   zynq_sdhci: 0
SF: Detected S25FL128S_64K with page size 256 Bytes, erase size 64 KiB, total 16 MiB
*** Warning - bad CRC, using default environment

In:    serial
Out:   serial
Err:   serial
Net:   Gem.e000b000
U-BOOT for AXI

Gem.e000b000 Waiting for PHY auto negotiation to complete..

It try followong solotion but i doesn't work.

http://forums.xilinx.com/t5/Embedded-Linux/Petalinux-boot-hangs-on-Waiting-for-PHY-auto-negotiation-to/td-p/475328

Can you help me?

With kind regards,
Sebastian

  • 0

    Hi Sebastian,

      I tried this with the latest 2014.4 BSP for MicroZed, and at first I thought we had a problem.  I got exactly the same result you saw.  But then I waited for over 2 minutes and Linux booted correctly.   So the system was not hung at all, but rather serial output was suspended while the Linux image was downloading (slowly) over JTAG.   I'm not 100% sure if you would see any difference with the older BSPs for MicroZed, but the latest ones have been validated and will be posted right away. 

    I used a Platform USB cable to test initially, and that gave the 2 minute delay.  I tried with the newer Digilent HS3 cable, and that reduced the Linux kernel download time to 34 seconds, almost a 4x improvement. 

    I am running PetaLinux from within a Virtualbox VM on my Windows 7 machine. 

    I found the boot process was repeatable as long as I followed these steps, after setting the MicroZed to boot from JTAG:

    1. Connect the JTAG cable between the MicroZed and host USB.

    2. Connect the USB serial cable, which also powers MicroZed.

    3. In my VM, I have to manually attach the USB connection for the JTAG to the VM since Windows grabs it first.  If you are using a native Linux host, you won't have this issue.

    4. I'm using TeraTerm on Windows for serial output.  It loses it's COM connection every time you unplug MicroZed, even though there is no indication of such (except you don't see any more serial output, which can make you think nothing is working).  So you have to manually disconnect and reconnect the COM port in TeraTerm.  You may have a different experience with another serial program.

    5. In the PetaLinux project:  petalinux-boot --jtag --prebuilt 3

    The serial terminal looks like it hangs, but just be patient.  As indicated earlier, the boot will work if you wait a few minutes (download speed varies depending on the cable you are using).

    To repeat, unplug the serial USB line to reset the board.  Then follow the steps above.  You don't have to physically disconnect the JTAG.

    If you find this doesn't work with the BSP you are currently using, download the 2014.4 version (which I would recommend anyway as soon as they are visible on this site).

    Ron

  • 0

    Hi Ron,
    thanks for your answer. I try to create a new project with the BSP 2014.2. Now it works!
    But what's wrong with my version? At first i used the "ZYNQ 7 Processing System", "Procesoor System Reset", "AXI Interconnect" and two "AXI GPIO" blocks in my design. I need this blocks.
    After that, i switched to petalinux without building a BSP in SDK. I used the command "petalinux-config --get-hw-description -p <plnx-proj-root>".

    I see, the directory "hardware" is not in my project folder at my own projekt.

    Sebastian

  • 0

    Ok i found your post in "No option to create PetaLinux BSP on XSDK ".
    I have understood correctly that I should use the BSP from the homepage and add my needed blocks like "AXI GPIO" in the device tree??

    Tanks for your reply
    Sebastian