Running the Image on the ZCU102 Board - 2024.2 English - UG1209

1. Copy the BOOT.bin, image.ub, and boot.scr to the SD card. Here boot.scr is read by U-Boot to load the kernel and the root file system.

2. Load the SD card into the ZCU102 board, in the J100 connector.

3. Connect a micro USB cable from the ZCU102 board USB UART port (J83) to the USB port on the host machine.

4. Configure the board to boot in SD-boot mode by setting switch SW6 to 1-ON, 2-OFF, 3- OFF, and 4-OFF, as shown in following figure.

   

5. Connect 12V Power to the ZCU102 6-Pin Molex connector.

6. Start a terminal session, using Tera Term or Minicom depending on the host machine being used, as well as the COM port and baud rate for your system, as shown in following figure.

   

7. For port settings, verify the COM port in device manager. There are four USB-UART interfaces exposed by the ZCU102 board.

8. Select the COM port associated with the interface with the lowest number. In this case, for UART-0, select the COM port with interface-0.

9. Similarly, for UART-1, select COM port with interface-1. Remember that the R5 BSP has been configured to use UART-1, and so R5 application messages appear on the COM port with the UART-1 terminal.

10. Turn on the ZCU102 Board using SW1, and wait until Linux loads on the board. At this point, you can see the initial boot sequence messages on your terminal screen representing UART-0.

You can see that the terminal screen configured for UART-1 also prints a message. This is the print message from the R5 bare-metal application running on the RPU, configured to use the UART-1 interface. This application is loaded by the FSBL onto the RPU.

The bare-metal application has been modified to include the UART interrupt example. This application now is now in a waiting for interrupt (WFI) state until user input is detected from the keyboard at the UART-1 terminal.

Meanwhile, the boot sequence continues on the APU and the images loaded can be understood from the messages appearing on the UART-0 terminal. The messages are highlighted in the following figure.

The U-Boot then loads the Linux kernel and other images on the Arm Cortex-A53 APU in SMP mode. The terminal messages indicate when the U-Boot loads the kernel image. When the kernel starts up, a user interface prompt is shown in the target Linux OS. The kernel loading and starting sequence can be seen in the following figure.