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Building and flashing images on Texas Instruments (TI)

Follow this procedure to flash an AutoSD image onto a Texas Instruments (TI) board.

Prerequisites

  • An AArch64 system with internet access
  • An SD card
  • A TI board or platform supported by AutoSD

Obtaining an image​

Use the automotive-image-builder tool to build AutoSD images for these TI boards:

  • BeaglePlay (beagleplay)
  • SK-AM62x Sitara (am62sk)
  • SK-AM69 Jacinto (am69sk)
  • TDA4 EVM (tda4vm_sk)
  • J784S4 EVM (j784s4evm)

For these boards, you can download a prebuilt image if you don't want to build your own:

  • SK-AM69 Jacinto (am69sk)
  • J784S4 EVM (j784s4evm)

Building the AutoSD image​

Procedure

  1. Clone the automotive-image-builder repository:

    $ git clone https://gitlab.com/CentOS/automotive/src/automotive-image-builder.git

  2. Build the TI image for your TI board:

    $ sudo ./automotive-image-builder --container build --target ````<model-name>```` \
    --mode package --export image ````<manifest>```` .

    Replace <model name> with the string corresponding to your board, such as am62sk. Replace &lt;manifest&gt; with your custom automotive image builder manifest file, in the .aib.yml format. If you do not have your own manifest file, you can build an AutoSD image with the automotive-image-builder/examples/simple.aib.yml manifest file.

  3. Continue with Flashing the image onto an SD card.

Downloading a prebuilt image​

Procedure

  1. Identify the model name of your TI board as used in the image name. See the nightly build directory. The model name is something like am69sk (for SK-AM69 Jacinto) or j784s4evm (for J784S4 EVM), as seen after auto-osbuild- in the nightly build directory.

  2. Store the value of the latest nightly image in a variable called AUTOSD_IMAGE_NAME. This example is for the am69sk model. Replace that piece of the command if you are using a different board.

    $ export AUTOSD_IMAGE_NAME="$(curl https://autosd.sig.centos.org/AutoSD-9/nightly/TI/ | grep -oE 'auto-osbuild-am69sk-autosd9-qa-regular-aarch64-[0-9]+\.[A-Za-z0-9]+\.raw\.xz' | head -n 1)"

  3. Download the image.

    $ wget -O auto-osbuild-am69sk-autosd9-qa-regular.raw.xz http://autosd.sig.centos.org/AutoSD-9/nightly/TI/$AUTOSD_IMAGE_NAME

  4. Uncompress the compressed .xz image file:

    $ xz -d auto-osbuild-am69sk-autosd9-qa-regular.raw.xz

  5. Continue with Flashing the image onto an SD card.

Flashing the image onto an SD card​

  1. To flash the uncompressed image onto an SD card, replace </dev/sdX> with your block device.

    $ dd if=auto-osbuild-am69sk-autosd9-qa-regular.raw of=</dev/sdX> status=progress bs=4M

  2. Set the onboard DIP switches to SD boot mode SW11[1-8] = 1000 0010 SW7[1-8] = 0000 0000.

  3. Plug in the SD card, and then start the system.

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