5.1 Flashing Linux .wic Image in eMMC Mode

This section describes the steps to put the HSS in CLI mode, program the Linux images into eMMC using the USBImager application and initiate the Linux boot.

  1. Do not insert SD card to the board. If present, SD card booting takes priority.
  2. Remove the micro-USB cable connected to J5 and connect it to J19  (USB-OTG connector) of the board. When the USB cable is detected, the LED near J19 glows in green.
  3. Connect one more micro-USB cable to J12 from the host PC.
  4. J18 and J57 must be open.
  5. Close pins 2 and 3 of J36.
  6. Power ON the board and press Enter on Interface 0 while booting.
    Important: The COM port number might be different for different users. To identify the COM port, see Setting Up the Serial Terminal.
  7. Follow the steps in eMMC Content Update Procedure.
  8. After programming the eMMC and rebooting, check the serial terminal application connected to Interface 1. Linux will be up and running, waiting for user to login.
    Figure 5-1. Linux User Login

This step demonstrated the process of running the Linux user application by programming the Linux user application image onto the on-board 8 GB eMMC NAND Flash using the .wic file. Upon completion, the Linux OS booted up successfully from the eMMC as indicated by the Linux OS login prompt displayed to the user.