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Found 3 results

  1. I am trying to boot Linux with Linaro file system on Zybo Z7-10 without Petalinux. I would like to connect a monitor to HDMI TX output to be able to see Linaro graphical interface but I am getting errors while Linaro Ubuntu is booting, and nothing is being shown on the monitor. I am sure that HDMI output works on my board since I got HDMI demo project to work. I am using Zybo base system design from here, adapted to Zybo Z7 on Vivado 2018.2. I have generated device tree from this design using Xilinx SDK following this tutorial. I am using Digilent's u-boot and Linux kernel and I've downloaded Linaro file system from here (last file). These are the errors that are showing up when Linaro Ubuntu is booting: systemd-bootchart.service failed. [ OK ] Started Remount Root and Kernel File Systems. [ OK ] Started Create Static Device Nodes in /dev. Starting udev Kernel Device Manager... Starting Load/Save Random Seed... [ OK ] Reached target Local File Systems (Pre). [FAILED] Failed to start Load Kernel Modules. See "systemctl status systemd-modules-load.service" for details. systemd-modules-load.service failed. Starting Apply Kernel Variables... [ OK ] Started udev Coldplug all Devices. [ OK ] Started Increase datagram queue length. [FAILED] Failed to mount Temporary Directory. See "systemctl status tmp.mount" for details. [FAILED] Failed to start RealtimeKit Scheduling Policy Service. See "systemctl status rtkit-daemon.service" for details. My goal is to enable HDMI output on Zybo Z7. I suspect that these errors are the cause of the problem, but I am not sure if there is any additional step I need to perform to get HDMI to work, like enabling some drivers in Linux kernel, or configuring the device tree. I have tried using different Linux kernel versions (by checking out different tags from Digilent's repository), using different versions of Linaro file system, using default device tree for Zybo Z7 provided with Linux kernel, but I've had no success since various errors are always showing up. I would appreciate any help or someone pointing me in the right direction, since I am not sure what is the cause of the problem. Thank you!
  2. Hello, I am doing project on Video Processing. I have installed Linaro on Zybo usnig SD card. I want to use both PL and PS for video processing such that my OS will take the video from camera using USB or HDMI and my PL side will do further processing. Now I am having doubt regarding how I will send the video stream from OS side to PL side for further processing.The one thing I now is that I have to use AXI interface but don't now how to process further.
  3. I'm a newbie to embedded development. I've worked through the linux hands on tutorial and have been successful at bringing up linux on the ramdisk as per the tutorial. What I really want is a ubuntu desktop working on the Zybo board. I have loaded the Linaro filesystem onto the sd card (as per the zed board examples) but still the Zybo insists on trying to load from a ramdisk. I have changed the chosen bootargs in the devicetree to bootargs = "console=ttyPS0,115200 root=/dev/mmcblk0p2 rw earlyprintk rootfstype=ext4 rootwait devtmpfs.mount=1" Is there something else I need to do in say the config file or uboot.elf to get it to use the filesystem from the ext4 partition rather than the ramfile? In using Vivado 2014.4 and SDK 2014.4. Thanks Mike.