Building an image for Raspberry Pi 2
Update: Raspberry Pi 2 is supported by the Crochet build tool.
- Build and install the u-boot port in sysutils/u-boot-rpi2 (or install the package)
- Create the image file (and setup the partitions):
# truncate -s 2g rpi2.img
# mdconfig -f rpi2.img -x 63 -y 255
md0
# gpart create -s MBR md0
md0 created
# gpart add -t '\!12' -a 63 -s 50m md0
md0s1 added
# gpart set -a active -i 1 md0
active set on md0s1
# newfs_msdos -F 16 /dev/md0s1
/dev/md0s1: 102240 sectors in 12780 FAT16 clusters (4096 bytes/cluster)
BytesPerSec=512 SecPerClust=8 ResSectors=1 FATs=2 RootDirEnts=512 Media=0xf0 FATsecs=50 SecPerTrack=63 Heads=255 HiddenSecs=0 HugeSectors=102375
# gpart add -t freebsd -a 4m md0
md0s2 added
# gpart create -s BSD md0s2
md0s2 created
# gpart add -t freebsd-ufs md0s2
md0s2a added
# newfs -U md0s2a
/dev/md0s2a: 1992.0MB (4079616 sectors) block size 32768, fragment size 4096
using 4 cylinder groups of 498.03MB, 15937 blks, 63872 inodes.
with soft updates
super-block backups (for fsck_ffs -b #) at:
192, 1020160, 2040128, 3060096
- Build and install FreeBSD into ufs partition:
# mount /dev/md0s2a /mnt # make TARGET_ARCH=armv6 UBLDR_LOADADDR=0x2000000 buildworld # make TARGET_ARCH=armv6 KERNCONF=RPI2 buildkernel # make TARGET_ARCH=armv6 DESTDIR=/mnt installkernel # make TARGET_ARCH=armv6 DESTDIR=/mnt installworld distribution
- Save a copy of ubldr and rpi2.dtb that will be used by Raspberry pi firmware:
# cp /mnt/boot/ubldr . # cp /mnt/boot/dtb/rpi2.dtb .
- Install the fstab, (a basic) rc.conf and /etc/ttys:
# mkdir /mnt/boot/msdos # cat << EOF > /mnt/etc/fstab /dev/mmcsd0s1 /boot/msdos msdosfs rw,noatime 0 0 /dev/mmcsd0s2a / ufs rw,noatime 1 1 md /tmp mfs rw,noatime,-s30m 0 0 md /var/log mfs rw,noatime,-s15m 0 0 md /var/tmp mfs rw,noatime,-s5m 0 0 EOF # cat << EOF > /mnt/etc/rc.conf hostname="rpi2" ifconfig_ue0="DHCP" sshd_enable="YES" sendmail_enable="NONE" sendmail_submit_enable="NO" sendmail_outbound_enable="NO" sendmail_msp_queue_enable="NO" EOF # cat << EOF > /mnt/etc/ttys 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 ttyu0 "/usr/libexec/getty 3wire" vt100 on secure EOF
- Copy your ssh key:
# mkdir /mnt/root/.ssh # chmod 700 /mnt/root/.ssh # cat ~myuser/.ssh/id_rsa.pub >> /mnt/root/.ssh/authorized_keys # echo "PermitRootLogin yes" >> /mnt/etc/ssh/sshd_config # umount /mnt
- Copy the u-boot to FAT partition:
# mount_msdosfs /dev/md0s1 /mnt # cp /usr/local/share/u-boot/u-boot-rpi2/* /mnt # cp ubldr rpi2.dtb /mnt # umount /mnt
- Detach the memory disk and write the image to SD card:
# mdconfig -d -u 0 # dd if=rpi2.img of=/dev/<SD_card_device> bs=1m
Enjoy!