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SSH_KEY_FILE?=$(HOME)/.ssh/id_rsa.pub
DISTRIBUTION=stretch
ROOTFS=rootfs
IMAGE=image
all: $(IMAGE).bmap
$(ROOTFS).debootstrapped:
# apt-cacher-ng listens on port 3142
http_proxy="http://localhost:3142" \
qemu-debootstrap \
--include=linux-image-armmp-lpae,flash-kernel,u-boot-tools,u-boot-rpi,parted,dbus,apt,openssh-server \
--arch=armhf \
$(DISTRIBUTION) \
$(ROOTFS) \
http://httpredir.debian.org/debian
touch $(ROOTFS).debootstrapped
# configure fstab
$(ROOTFS).customized: $(ROOTFS).debootstrapped
echo "/dev/mmcblk0p1 /boot/firmware vfat noatime 0 2" > $(ROOTFS)/etc/fstab
echo "/dev/mmcblk0p2 / ext4 defaults 0 1" >> $(ROOTFS)/etc/fstab
echo "tmpfs /tmp tmpfs defaults 0 0" >> $(ROOTFS)/etc/fstab
# install proprietary 2nd-stage bootloader firmware
mkdir -p "$(ROOTFS)/boot/firmware"
wget -O "$(ROOTFS)/boot/firmware/bootcode.bin" \
https://github.com/raspberrypi/firmware/raw/master/boot/bootcode.bin
wget -O "$(ROOTFS)/boot/firmware/start.elf" \
https://github.com/raspberrypi/firmware/raw/master/boot/start.elf
wget -O "$(ROOTFS)/boot/firmware/fixup.dat" \
https://github.com/raspberrypi/firmware/raw/master/boot/fixup.dat
# configure u-boot 3rd-stage bootloader
# https://blog.night-shade.org.uk/2015/05/booting-a-raspberry-pi2-with-u-boot-and-hyp-enabled/
cp "$(ROOTFS)/usr/lib/u-boot/rpi_2/u-boot.bin" "$(ROOTFS)/boot/firmware/u-boot.bin"
echo "gpu_mem=64" > "$(ROOTFS)/boot/firmware/config.txt"
echo "kernel=u-boot.bin" >> "$(ROOTFS)/boot/firmware/config.txt"
# configure kernel flashing utility
# http://sjoerd.luon.net/posts/2015/02/debian-jessie-on-rpi2/
echo "Raspberry Pi 2 Model B" > "$(ROOTFS)/etc/flash-kernel/machine"
echo "setenv distro_bootpart 2" > "$(ROOTFS)/etc/flash-kernel/ubootenv.d/10-partition"
echo "setenv prefix /boot/" >> "$(ROOTFS)/etc/flash-kernel/ubootenv.d/10-partition"
echo "Machine: Raspberry Pi 2 Model B" > "$(ROOTFS)/etc/flash-kernel/db"
echo "Boot-Script-Path: /boot/firmware/boot.scr" >> "$(ROOTFS)/etc/flash-kernel/db"
# configure kernel boot args
echo 'LINUX_KERNEL_CMDLINE="quiet"' > "$(ROOTFS)/etc/default/flash-kernel"
echo 'LINUX_KERNEL_CMDLINE_DEFAULTS="console=ttyAMA0 root=/dev/mmcblk0p2"' >> "$(ROOTFS)/etc/default/flash-kernel"
chroot $(ROOTFS) flash-kernel
# configure other system settings
echo "pi" > $(ROOTFS)/etc/hostname
echo "127.0.0.1 localhost" > $(ROOTFS)/etc/hosts
echo "::1 localhost" >> $(ROOTFS)/etc/hosts
echo "deb http://httpredir.debian.org/debian $(DISTRIBUTION) main contrib non-free" > $(ROOTFS)/etc/apt/sources.list
echo "deb http://httpredir.debian.org/debian $(DISTRIBUTION)-updates main contrib non-free" >> $(ROOTFS)/etc/apt/sources.list
echo "deb http://security.debian.org $(DISTRIBUTION)/updates main contrib non-free" >> $(ROOTFS)/etc/apt/sources.list
echo "auto lo" > "$(ROOTFS)/etc/network/interfaces.d/lo"
echo "iface lo inet loopback" >> "$(ROOTFS)/etc/network/interfaces.d/lo"
echo "allow-hotplug eth0" > "$(ROOTFS)/etc/network/interfaces.d/eth0"
echo "iface eth0 inet dhcp" >> "$(ROOTFS)/etc/network/interfaces.d/eth0"
mkdir -p -m 0600 $(ROOTFS)/root/.ssh
cat $(SSH_KEY_FILE) > $(ROOTFS)/root/.ssh/authorized_keys
sed -i 's/#PasswordAuthentication yes/PasswordAuthentication no/g' "$(ROOTFS)/etc/ssh/sshd_config"
chroot $(ROOTFS) sh -c "echo root:guest | chpasswd"
cp firstboot $(ROOTFS)/etc/firstboot
chmod +x $(ROOTFS)/etc/firstboot
echo "#!/bin/sh -e" > $(ROOTFS)/etc/rc.local
echo "/etc/firstboot" >> $(ROOTFS)/etc/rc.local
echo "exit 0" >> $(ROOTFS)/etc/rc.local
chmod +x $(ROOTFS)/etc/rc.local
touch $(ROOTFS).customized
$(IMAGE).raw: $(ROOTFS).customized
scripts/mkrootimg $(ROOTFS) $(IMAGE).raw
touch $(IMAGE).raw
$(IMAGE).bmap: $(IMAGE).raw
bmaptool create -o $(IMAGE).bmap $(IMAGE).raw
clean:
rm -rf $(ROOTFS)
rm -f $(ROOTFS).debootstrapped
rm -f $(ROOTFS).customized
mrproper: clean
rm -f $(IMAGE).raw
rm -f $(IMAGE).bmap
.PHONY: all clean mrproper
|
