定制Raspberry Pi镜像

本文针对开发者描述何如创建一个定制的Raspberry Pi ARM版Kali Linux镜像的方法.如果你只是想安装Kali镜像,请查阅我们的文章“安装Kali Linux ARM版到Raspberry Pi”.

01. 创建Kali rootfs

创建一个armel架构的如Kali文档中所述的Kali rootfs.最后生成的rootfs将位于~/arm-stuff/rootfs/kali-armel目录.

02. 创建镜像文件

然后,我们创建用于存放我们Raspberry Pi rootfs和boot镜像的物理镜像文件.

apt-get install kpartx xz-utils sharutils
cd ~
mkdir -p arm-stuff
cd arm-stuff/
mkdir -p images
cd images
dd if=/dev/zero of=kali-custom-rpi.img bs=1MB count=5000

03. 分区并挂载镜像文件

parted kali-custom-rpi.img --script -- mklabel msdos
parted kali-custom-rpi.img --script -- mkpart primary fat32 0 64
parted kali-custom-rpi.img --script -- mkpart primary ext4 64 -1

loopdevice=`losetup -f --show kali-custom-rpi.img`
device=`kpartx -va $loopdevice| sed -E 's/.*(loop[0-9])p.*/1/g' | head -1`
device="/dev/mapper/${device}"
bootp=${device}p1
rootp=${device}p2

mkfs.vfat $bootp
mkfs.ext4 $rootp
mkdir -p root
mkdir -p boot
mount $rootp root
mount $bootp boot

04. 复制和修改Kali rootfs

rsync -HPavz /root/arm-stuff/rootfs/kali-armel/ root
echo nameserver 8.8.8.8 > root/etc/resolv.conf

05. 编译Raspberry Pi内核和模块

如果你不是以ARM硬件作为开发环境,需要搭建ARM交叉编译环境来编译ARM内核和模块.完成后,执行如下命令.

cd ~/arm-stuff
mkdir -p kernel
cd kernel
git clone https://github.com/raspberrypi/tools.git
git clone https://github.com/raspberrypi/linux.git raspberrypi
cd raspberrypi
export ARCH=arm
export CROSS_COMPILE=~/arm-stuff/kernel/toolchains/arm-eabi-linaro-4.6.2/bin/arm-eabi-
make bcmrpi_cutdown_defconfig
# configure your kernel !
make menuconfig
make -j$(cat /proc/cpuinfo|grep processor|wc -l)
make modules_install INSTALL_MOD_PATH=~/arm-stuff/images/root
cd ../tools/mkimage/
python imagetool-uncompressed.py ../../raspberrypi/arch/arm/boot/Image

cd ~/arm-stuff/images
git clone git://github.com/raspberrypi/firmware.git rpi-firmware
cp -rf rpi-firmware/boot/* boot/
rm -rf rpi-firmware

cp ~/arm-stuff/kernel/tools/mkimage/kernel.img boot/
echo "dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 rootwait" >  boot/cmdline.txt

umount $rootp
umount $bootp
kpartx -dv $loopdevice
losetup -d $loopdevice

使用dd工具克隆这个文件到你的SD卡.在本例中,我们假设存储设备在/dev/sdb.请按需修改.

dd if=kali-pi.img of=/dev/sdb bs=1M

dd操作完成后,卸载并弹出SD卡.然后启动进入到Kali Linux