Building image for Raspberry Pi: up to date version

Update 1: Add -DDB_FROM_SRC to install targets Update 2: Add user “pi” with password “raspberry” Update 3: Added host system requirements suggested in comments Update 4: Rename bcm2835-rpi-b.dtb to rpi.dtb

It’s been a while since I posted original build instruction and a lot has change. Here is new version of it with some explanations:

First make sure your host system is configured properly:

WITHOUT_FORTH= must NOT be set in src.conf
msdos support must be available in the kernel
geom_md support must be available in the kernel

All code has been moved to HEAD. freebsd-pi repository on github serves only historical purpose and I guess will be removed at some point in future. So in order to build image you need sources for -head

svn co svn://svn.freebsd.org/base/head

TARGET_CPUTYPE is dropped to in favor of TARGET_ARCH=armv6. U-Boot, firmware files and boot process were upgraded too. Current boot chain is as follows:

Pi is powered up and loads firmware files
Firmware loads FDT blob defined in config.txt as device_tree variable at address defined as device_tree_address and fixes up fields like memory size, clock frequency and MAC address
Firmware loads u-boot and passes control to it
U-boot loads boot.scr and executes it
Default boot.scr loads ubldr(loader(8)-compatible implementation built over U-Boot API) and passes control
ubldr checks FreeBSD partition for /boot/loader.rc, loads it, the loads /boot/kernel/kernel and passes control to it loader.rc should contain “fdt addr 0x100” command. It will pass FDT blob filled in step #2 to kernel

So updated build script will look something like this:

#!/bin/sh
set -e

# Change this
export GPU_MEM=128
export PI_USER=pi
export PI_USER_PASSWORD=raspberry
export SRCROOT=/src/FreeBSD/head
export MNTDIR=/mnt
export MAKEOBJDIRPREFIX=/src/FreeBSD/obj
export IMG=/src/FreeBSD/obj/bsd-pi.img

export TARGET_ARCH=armv6
export MAKESYSPATH=$SRCROOT/share/mk
export KERNCONF=RPI-B

if [ -z "$MNTDIR" ]; then
        echo "MNTDIR is not set properly"
        exit 1
fi

KERNEL=`realpath $MAKEOBJDIRPREFIX`/arm.armv6/`realpath $SRCROOT`/sys/$KERNCONF/kernel
UBLDR=`realpath $MAKEOBJDIRPREFIX`/arm.armv6/`realpath $SRCROOT`/sys/boot/arm/uboot/ubldr
DTB=`realpath $MAKEOBJDIRPREFIX`/arm.armv6/`realpath $SRCROOT`/sys/$KERNCONF/rpi.dtb

make -C $SRCROOT kernel-toolchain
make -C $SRCROOT KERNCONF=$KERNCONF WITH_FDT=yes buildkernel
make -C $SRCROOT MALLOC_PRODUCTION=yes buildworld

buildenv=`make -C $SRCROOT buildenvvars`

eval $buildenv make -C $SRCROOT/sys/boot clean
eval $buildenv make -C $SRCROOT/sys/boot obj
eval $buildenv make -C $SRCROOT/sys/boot UBLDR_LOADADDR=0x2000000 all

rm -f $IMG
dd if=/dev/zero of=$IMG bs=128M count=8
MDFILE=`mdconfig -a -f $IMG`
gpart create -s MBR ${MDFILE}

# Boot partition
gpart add -s 32m -t '!12' ${MDFILE}
gpart set -a active -i 1 ${MDFILE}
newfs_msdos -L boot -F 16 /dev/${MDFILE}s1
mount_msdosfs /dev/${MDFILE}s1 $MNTDIR
fetch -q -o - http://people.freebsd.org/~gonzo/arm/rpi/freebsd-uboot-20130201.tar.gz | tar -x -v -z -C $MNTDIR -f -

cat >> $MNTDIR/config.txt <<__EOC__
gpu_mem=$GPU_MEM
device_tree=devtree.dat
device_tree_address=0x100
disable_commandline_tags=1
__EOC__
cp $UBLDR $MNTDIR
cp $DTB $MNTDIR/devtree.dat
umount $MNTDIR

# FreeBSD partition
gpart add -t freebsd ${MDFILE}
gpart create -s BSD ${MDFILE}s2
gpart add -t freebsd-ufs ${MDFILE}s2
newfs /dev/${MDFILE}s2a

# Turn on Softupdates
tunefs -n enable /dev/${MDFILE}s2a
# Turn on SUJ with a minimally-sized journal.
# This makes reboots tolerable if you just pull power on the BB
# Note:  A slow SDHC reads about 1MB/s, so a 30MB
# journal can delay boot by 30s.
tunefs -j enable -S 4194304 /dev/${MDFILE}s2a
# Turn on NFSv4 ACLs
tunefs -N enable /dev/${MDFILE}s2a

mount /dev/${MDFILE}s2a $MNTDIR

make -C $SRCROOT DESTDIR=$MNTDIR -DDB_FROM_SRC installkernel
make -C $SRCROOT DESTDIR=$MNTDIR -DDB_FROM_SRC installworld
make -C $SRCROOT DESTDIR=$MNTDIR -DDB_FROM_SRC distribution

echo 'fdt addr 0x100' > $MNTDIR/boot/loader.rc

echo '/dev/mmcsd0s2a / ufs rw,noatime 1 1' > $MNTDIR/etc/fstab

cat > $MNTDIR/etc/rc.conf <<__EORC__
hostname="raspberry-pi"
ifconfig_ue0="DHCP"
sshd_enable="YES"

devd_enable="YES"
sendmail_submit_enable="NO"
sendmail_outbound_enable="NO"
sendmail_msp_queue_enable="NO"
__EORC__

cat > $MNTDIR/etc/ttys <<__EOTTYS__
ttyv0 "/usr/libexec/getty Pc" xterm on secure
ttyv1 "/usr/libexec/getty Pc" xterm on secure
ttyv2 "/usr/libexec/getty Pc" xterm on secure
ttyv3 "/usr/libexec/getty Pc" xterm on secure
ttyv4 "/usr/libexec/getty Pc" xterm on secure
ttyv5 "/usr/libexec/getty Pc" xterm on secure
ttyv6 "/usr/libexec/getty Pc" xterm on secure
ttyu0 "/usr/libexec/getty 3wire.115200" dialup on secure
__EOTTYS__

echo $PI_USER_PASSWORD | pw -V $MNTDIR/etc useradd -h 0 -n $PI_USER -c "Raspberry Pi User" -s /bin/csh -m
pw -V $MNTDIR/etc groupmod wheel -m $PI_USER
PI_USER_UID=`pw -V $MNTDIR/etc usershow $PI_USER | cut -f 3 -d :`
PI_USER_GID=`pw -V $MNTDIR/etc usershow $PI_USER | cut -f 4 -d :`
mkdir -p $MNTDIR/home/$PI_USER
chown $PI_USER_UID:$PI_USER_GID $MNTDIR/home/$PI_USER

umount $MNTDIR
mdconfig -d -u $MDFILE