The Hobbitboard is a two-board development system from the makers of the Wandboard, consisting of a System-on-Module (SoM) and a carrier baseboard. The SoM integrates the processor, RAM, eMMC, power management, and wifi/bluetooth. This connects to the baseboard via three Hirose 70-pin connectors, with an Intel Edison compatible footprint. The included baseboard provides connectivity for audio, USB, ethernet, and a variety of headers exposing additional signals.
- ARMv7 Cortex-A7
- Freescale i.MX6ul 528MHz
- AC, Bluetooth
Setup for serial download mode
- Configure the jumpers next to the SoM to enable serial download mode:
- Connect a USB 3.0 Type C cable between the Hobbitboard and a computer.
- Apply 5V power to the baseboard.
- Inspect lsusb to ensure that the board has been recognized. A line similar to this should be present:
Bus 002 Device 008: ID 15a2:007d Freescale Semiconductor, Inc.
- Download and extract the Hobbitboard tools zip:
- Run the imx_usb (or imx_usb_32bit for 32-bit hosts) as the root user or with sudo to send the "bootbomb" to the board to expose the eMMC:
- After a few moments, the eMMC device will enumerate as a normal storage drive.
Install to eMMC
Replace sdX in the following instructions with the device name for the eMMC as it appears on your computer.
- Zero the beginning of the eMMC:
dd if=/dev/zero of=/dev/sdX bs=1M count=8
- Start fdisk to partition the eMMC:
- At the fdisk prompt, delete old partitions and create a new one:
- Type o. This will clear out any partitions on the drive.
- Type p to list partitions. There should be no partitions left.
- Now type n, then p for primary, 1 for the first partition on the drive, 2048 for the first sector, and then press ENTER to accept the default last sector.
- Write the partition table and exit by typing w.
- Create the ext4 filesystem:
- For e2fsprogs < 1.43:
- For e2fsprogs >= 1.43:
mkfs.ext4 -O ^metadata_csum,^64bit /dev/sdX1
- Mount the filesystem:
mount /dev/sdX1 mnt
- Download and extract the root filesystem (as root, not via sudo):
bsdtar -xpf ArchLinuxARM-armv7-latest.tar.gz -C mnt
- Download and install the U-Boot bootloader:
dd if=u-boot.imx of=/dev/sdX bs=1k seek=1 conv=notrunc oflag=dsync
Setup for eMMC boot mode
- Ensure the eMMC storage device has been unmounted, and remove 5V power and the USB 3.0 Type C cable from the baseboard.
- Configure the jumpers next to the SoM to enable booting from eMMC:
- Connect ethernet, and apply 5V power.
- Use the serial console or SSH to the IP address given to the board by your router.
- Login as the default user alarm with the password alarm.
- The default root password is root.
- Initialize the pacman keyring and populate the Arch Linux ARM package signing keys:
pacman-key --populate archlinuxarm
Install the U-Boot package
- In order to receive updates to the U-Boot bootloader, after logging into the system type:
pacman -Sy uboot-hobbitboard
- When prompted, press y and hit enter to flash the bootloader to the eMMC.
Set a static ethernet MAC address
- The ethernet controller has no stored MAC address. To set a static address, create the file /boot/uEnv.txt and add the following line:
- Configure each hex byte for the desired address.
- Save the file and reboot.
- In order for the wireless chipset to work, install the Hobbitboard firmware package:
pacman -Sy firmware-hobbitboard
- Reboot after installation. The wireless device will be enumerated as wlan0.
- Connect an antenna to the U.FL connector on the SoM.
- Install any additional or desired wireless and network management software.