Jumpnow Technologies


FreeBSD Duovero build workstation setup

24 Nov 2014

Here’s how I’ve been setting up my FreeBSD workstations for building Gumstix Duovero FreeBSD systems.

I’m using crochet-freebsd to do the heavy lifting.

The faster of the two workstations I’m using can build a Duovero image from scratch in about 21 minutes. The slower machine takes about 30 minutes.

Workstation Install

I’m running CURRENT on the build workstations since the switch to the new 3.5 Clang compiler. There is some new code for ARM boards that requires this version of Clang which is the default in CURRENT.

I installed from a USB drive using a amd64-memstick image from the FreeBSD ftp site.

Select enable sshd when prompted. You’ll also want to add a normal user.

After installation I built the subversion port so I could fetch a current /usr/src.

Then I followed the FreeBSD Handbook instructions to update the system to FreeBSD-CURRENT.

And finally I installed these extra ports

I’m doing everything on the workstations through ssh sessions, so I don’t need much installed.

Fetch the FreeBSD source

I keep another copy of CURRENT source in my home directory that I patch up for the Duovero systems.

Fetch a copy like this

scott@fbsd:~ % svn co https://svn0.us-east.freebsd.org/base/head ~/src-current

Fetch the Duovero patches

I’m keeping the Duovero changes to the FreeBSD source in a repository duovero-freebsd

Clone it with git

scott@fbsd:~ % git clone git@github.com/scottellis/duovero-freebsd.git

Run the copy_to_src.sh script to update ~/src-current.

scott@fbsd:~ % cd duovero-freebsd
scott@fbsd:~/duovero-freebsd % ./copy_to_src.sh

The copy script applies my patches for the Duovero. I’m working on getting these accepted upstream.

Crochet setup

I have a branch of crochet-freebsd with support for the Duovero board here github.com/scottellis/crochet-freebsd.

Clone it with git. You want the [current] branch.

scott@fbsd:~ % git clone -b current git@github.com:scottellis/crochet-freebsd.git

Fetch and build the Duovero u-boot port

FreeBSD now has ports for u-boot for a few ARM boards.

I added 2 more for the PandaBoard and the Duovero.

You can grab the shar archives here.

As root untar them to /usr/ports/sysutils like this

# cd /usr/ports/sysutils
# sh path/to/u-boot-duovero.shar

That should create a new directory /usr/ports/sysutils/u-boot-duovero

Build the port as normal

# cd /usr/ports/sysutils/u-boot-duovero
# make install clean

The binaries will be installed in /usr/local/share/u-boot/u-boot-duovero which is where the crochet scripts will look for them.

Using the u-boot port, the xdev tools are no longer required when using crochet.

Tmpfs work directory (optional)

Crochet uses a work directory for temporary files when it does a build. Since I have enough memory on these build workstations and since I’m not using them for anything else, I use a memory based tmpfs(5) file system for the work directory.

If you want to do the same, as root edit /etc/fstab and add a line like this

tmpfs           /work           tmpfs   rw,mode=01777   0       0

Create the mount point

root@fbsd:~ # mkdir /work

And mount it

root@fbsd:~ # mount /work

Here’s what it looks like after a build

scott@fbsd:~ % df -h
Filesystem     Size    Used   Avail Capacity  Mounted on
/dev/ada0p2    899G     16G    811G     2%    /
devfs          1.0K    1.0K      0B   100%    /dev
tmpfs           32G    5.3G     27G    17%    /work

If you don’t do this, the default work directory will be ~/crochet-freebsd/work. You can put the work directory anywhere you want. See the config-duovero.sh script below.

Adjust the config-duovero.sh script

Here’s what my default config-duovero.sh script looks like.

scott@fbsd:~/dev/crochet-freebsd % cat config-duovero.sh
board_setup Duovero



option AutoSize

# uncomment these together
#option UsrSrc
#IMAGE_SIZE=$((4096 * 1000 * 1000))

customize_freebsd_partition () {
    pw moduser root -V etc/ -w yes
    sed -i -e 's/^#PermitRootLogin no/PermitRootLogin yes/' etc/ssh/sshd_config
    cp usr/share/zoneinfo/EST5EDT etc/localtime
    cat etc/motd | head -2 > etc/motd

This is the script that will be fed to crochet.

This particular config is for an 8-core workstation that uses the tmpfs work directory.

You’ll probably want to tweak the script for your build machine.

The AutoSize option adds a script to expand the filesystem on the SD card at boot.

The UsrSrc option installs FREEBSD_SRC onto the SD card as /usr/src. You also need to increase the initial SD card image size if installing source.

The lines in the customize_freebsd_partition() function do the following

  1. Add a password of root to the root account.
  2. Allow root logins over ssh.
  3. Change the timezone to EST.
  4. Trim the motd to 2 lines.

Run crochet

As root

root@fbsd:/usr/home/scott/crochet-freebsd # ./crochet.sh -c config-duovero.sh

And example of a full build output is here.

When it’s done, you’ll have an image in WORKDIR that you can dd(1) to an SD card.

If you used a tmpfs and want to save the image, then be sure to copy the image somewhere permanent or you’ll lose it on reboot. I don’t usually bother with this since images build so quickly.