I’m planning to cover it in another article, hold tight :) What is the XSDB/XSCT server?īefore starting, let’s take a look at what these strangely named utilities actually are. For the Zynq-UltraScale+, the scenario is similar but it has different challenges. This article will only cover the scenario for the Zynq-7000 SoC. As the Linux image is the final step of booting and we will be booting the bootloaders prior to it, you will also be able to boot any other application using similar methods. So, in this article, you will see how you can boot your Embedded Linux image on a Zynq SoC using only the JTAG interface. Thanks to what I learned from that challenging booting process, I’m now able to boot Xilinx FPGA SoCs using only the JTAG interface. It was the moment when I understood that my comfort zone had its own limitations :)
FSBL, U-Boot, etc. Even the modifications on the SD card could be done by using the target itself with a proper SSH connection, or similar.Īfter a while, in one of the projects that I’m currently working on at Meteksan Defense, a disastrous moment came and I realized that I don’t have access to either the Ethernet ports or the SD card.
I was more than happy since, thanks to the Ethernet interface, I only had to modify the SD card content when I need to change the bootloader, i.e. Then, I discovered the TFTP and NFS booting methods. It was slow and required me to plug/unplug the memory card thousands of times. When I started to learn the Embedded Linux development, I was using the SD Card booting only. When it comes to working with a more complex and hierarchical boot as we do in booting Embedded Linux images, things can become more complicated and frustrating. Whether it is a bare-metal or an OS-based embedded system, booting it up from scratch is one of the key steps to start the development cycle in our projects.
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