kali@kali:~$ export ARCH=arm

kali@kali:~$ export CROSS_COMPILE=~/arm-stuff/kernel/toolchains/arm-eabi-linaro-4.6.2/bin/arm-eabi-

kali@kali:~$

kali@kali:~$ ./chromeos/scripts/prepareconfig chromeos-exynos5

​

# Disable LSM

kali@kali:~$ sed -i 's/CONFIG_SECURITY_CHROMIUMOS=y/# CONFIG_SECURITY_CHROMIUMOS is not set/g' .config

​

# If cross compiling, do this once:

kali@kali:~$ sed -i 's/if defined(__linux__)/if defined(__linux__) ||defined(__KERNEL__) /g' include/drm/drm.h

​

kali@kali:~$ make menuconfig

kali@kali:~$ make -j$(cat /proc/cpuinfo|grep processor | wc -l)

kali@kali:~$ make dtbs

kali@kali:~$ cp ./scripts/dtc/dtc /usr/bin/

kali@kali:~$ mkimage -f kernel.its kernel.itb

kali@kali:~$ make modules_install INSTALL_MOD_PATH=~/arm-stuff/images/root/

​

# Copy over firmware. Ideally use the original firmware (/lib/firmware) from the Chromebook.

kali@kali:~$ git clone git://git.kernel.org/pub/scm/linux/kernel/git/dwmw2/linux-firmware.git

kali@kali:~$ cp -rf linux-firmware/* ~/arm-stuff/images/root/lib/firmware/

kali@kali:~$ rm -rf linux-firmware

sudo apt install dbus-x11

startxfce4

sudo install -Dt /usr/local/bin -m 755 ~/Downloads/crouton

sudo crouton

sudo enter-chroot -n kali

kali@kali:~$ parted kali-custom-chrome.img --script -- mklabel msdos

kali@kali:~$ parted kali-custom-chrome.img --script -- mktable gpt

kali@kali:~$ gdisk kali-custom-chrome.img <<EOF

x

l

8192

m

n

1

​

+16M

7f00

n

2

​

+16M

7f00

n

3

​

w

y

EOF

kali@kali:~$ loopdevice=`losetup -f --show kali-custom-chrome.img`

kali@kali:~$ device=`kpartx -va $loopdevice| sed -E 's/.*(loop[0-9])p.*/\1/g' | head -1`

kali@kali:~$ device="/dev/mapper/${device}"

kali@kali:~$ bootp1=${device}p1

kali@kali:~$ bootp2=${device}p2

kali@kali:~$ rootp=${device}p3

​

kali@kali:~$ mkfs.ext4 $rootp

kali@kali:~$ mkdir -p root

kali@kali:~$ mount $rootp root

kali@kali:~$ cd ~/arm-stuff/images/

kali@kali:~$ rsync -HPavz ~/arm-stuff/rootfs/kali-armhf/ root

kali@kali:~$

kali@kali:~$ echo nameserver 8.8.8.8 > root/etc/resolv.conf

kali@kali:~$

kali@kali:~$ mkdir -p root/etc/X11/xorg.conf.d/

kali@kali:~$ cat <<EOF > root/etc/X11/xorg.conf.d/50-touchpad.conf

Section "InputClass"

Identifier "touchpad"

MatchIsTouchpad "on"

Driver "synaptics"

Option "TapButton1" "1"

Option "TapButton2" "3"

Option "TapButton3" "2"

Option "FingerLow" "15"

Option "FingerHigh" "20"

Option "FingerPress" "256"

EndSection

EOF

kali@kali:~$ mkdir -p ~/arm-stuff/kernel/

kali@kali:~$ cd ~/arm-stuff/kernel/

kali@kali:~$ git clone http://git.chromium.org/chromiumos/third_party/kernel.git -b chromeos-3.4 chromeos

kali@kali:~$ cd chromeos/

kali@kali:~$ cat <<EOF > kernel.its

/dts-v1/;

​

/ {

description = "Chrome OS kernel image with one or more FDT blobs";

#address-cells = ;

images {

kernel@1{

description = "kernel";

data = /incbin/("arch/arm/boot/zImage");

type = "kernel_noload";

arch = "arm";

os = "linux";

compression = "none";

load = ;

entry = ;

};

fdt@1{

description = "exynos5250-snow.dtb";

data = /incbin/("arch/arm/boot/exynos5250-snow.dtb");

type = "flat_dt";

arch = "arm";

compression = "none";

hash@1{

algo = "sha1";

};

};

};

configurations {

default = "conf@1";

conf@1{

kernel = "kernel@1";

fdt = "fdt@1";

};

};

};

EOF