Preparing the microSD card to boot the board

You can prepare your microSD card to boot using U-Boot.

Note:

For descriptions of the boot processes, see Boot using U-Boot.

Pre-built image

After you have unzipped the BSP, a prebuilt QNX IFS image is available in the BSP's /images directory.

This prebuilt IFS image is generated by the BSP make utility, and is configured for the various BSP device drivers already on your system. When you build the BSP, this image is overwritten with a new QNX IFS file that gets generated by the BSP build process, so you may want to make a copy of it for future reference. If you forget to make a backup copy of this image, you can simply extract the BSP from the ZIP file (.zip archive) again to recover the original prebuilt IFS. Before you can put the boot image on the microSD card, you must prepare the microSD card to be bootable. For more information, see the Preparing to boot using U-Boot in this chapter.

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Preparing to boot using U-Boot

To use U-Boot to boot the Jacinto 7 J721E SK, you are required to create an SD card image using tisdk-edgeai-image-j721e-evm.wic.xz that's available on the Texas Instruments website at https://www.ti.com/tool/download/PROCESSOR-SDK-LINUX-SK-TDA4VM/09.02.00.05 page.
  1. Insert a 16GB microSD card into your host computer if you haven't done so.
  2. On your host computer, download the tisdk-edgeai-image-j721e-evm.wic.xz file from the https://www.ti.com/tool/download/PROCESSOR-SDK-LINUX-SK-TDA4VM/09.02.00.05 page from the Texas Instruments website. You should see the following file 
    975727156 Jun 18 11:07 tisdk-edgeai-image-j721e-evm.wic.xz
  3. Flash the tisdk-edgeai-image-j721e-evm.wic.xz file to the microSD card by following the steps in the Create SD Card section of the Processor SDK Linux for TDA4VM documentation that's available on the Texas Instruments website at https://software-dl.ti.com/jacinto7/esd/processor-sdk-linux-sk-tda4vm/09_02_00/exports/docs/ linux/Overview/Processor_SDK_Linux_create_SD_card.html
  4. Copy the QNX IFS for this BSP to the microSD card with the name qnx-ifs if you want to boot the QNX OS directly from the microSD card.
    For Linux hosts: 
    cd $BSP_ROOT_DIR/images
cp ifs-j721e-sk.raw mountpoint/qnx-ifs

    For a Windows host: 

    cd $BSP_ROOT_DIR\images
copy ifs-j721e-sk.raw drive:\qnx-ifs
  5. Copy psdk_linux_9.2_k3-j721e-sk.dtb to the microSD card.

    For Linux hosts: 

    cd $BSP_ROOT_DIR/prebuilt/usr/lib
cp psdk_linux_9.2_k3-j721e-sk.dtb mountpoint

    For a Windows host: 

    cd $BSP_ROOT_DIR\images
copy psdk_linux_9.2_k3-j721e-sk.dtb drive:\
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