buildroot

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Technexion i.MX6UL Pico board

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This file documents the Buildroot support for the Technexion i.MX6UL Pico board.

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Build

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First, configure Buildroot for the i.MX6UL Pico board:

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  make imx6ulpico_defconfig

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Build all components:

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  make

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You will find in output/images/ the following files:

  - imx6ul-pico-hobbit.dtb

  - rootfs.ext4

  - rootfs.tar

  - sdcard.img

  - u-boot.imx

  - zImage

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Create a bootable SD card

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In the U-Boot prompt lauch:

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=> ums 0 mmc 0

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This will mount the eMMC content in the host PC as a mass storage device.

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To determine the device associated to the eMMC card have a look in the

/proc/partitions file:

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  cat /proc/partitions

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Buildroot prepares a bootable "sdcard.img" image in the output/images/

directory, ready to be dumped on the eMMC card. Launch the following

command as root:

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  dd if=output/images/sdcard.img of=/dev/<your-sd-device>

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*** WARNING! This will destroy all the card content. Use with care! ***

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For details about the medium image layout, see the definition in

board/freescale/common/imx/genimage.cfg.template.

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Boot the i.MX6UL Pico board

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To boot your newly created system:

- put a micro USB cable into the Debug USB Port and connect using a terminal

  emulator at 115200 bps, 8n1;

- power on the board.

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Using Wifi

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# modprobe brcmfmac

# iwconfig wlan0 essid ACCESSPOINTNAME

# wpa_passphrase ACCESSPOINTNAME > /etc/wpa.conf

(enter the wifi password and press enter)

# wpa_supplicant -Dwext -iwlan0 -c /etc/wpa.conf &

# udhcpc -i wlan0

# ping buildroot.org

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Enjoy!