4.1 Create a Working SD Card Image

  1. Check out buildroot-mchp and buildroot-external-microchip.
    $ git clone https://github.com/linux4microchip/buildroot-mchp.git
$ cd buildroot-mchp
$ git checkout linux4microchip-2026.04
$ cd ..
$ git clone https://github.com/linux4microchip/buildroot-external-microchip.git
$ cd buildroot-external-microchip
$ git checkout linux4microchip-2026.04
$ cd ../buildroot-mchp
$ export BR2_EXTERNAL=../buildroot-external-microchip/
$ make sam9x75_curiosity_headless_defconfig
  2. Build the image using the command below and test it to ensure that root filesystem integrity verification works correctly.
    $ make
    This process creates a working SD card image for the SAM9X75-Curiosity board. Copy the image to an SD card and verify that it works on the SAM9X75-Curiosity board.

    The name of the image is output/images/sdcard.img.