Separate the instructions to clone the repostory with Git LFS into a
separate section, and add a section with some minimal instructions to
get started for buildnthg Chromebook firmware images.

Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>

Add a basic README.md with some minimal instructions about how to
flash a firmware image on a Chromebook using servoflash.py.

Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>

Add a Docker container with docker-compose to prepare a Chrome OS
SDK environment to build some Chromebook firmware.  Include a
bootstrap.sh script to set it up and the environment variables
for "octopus" as the first device type.

Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>

The servoflash.py script has been tested with a "hana" Chromebook
which was previously flashed using flash-kevin.sh.  So flash-kevin.sh
can now be dropped.

Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>

Add servoflash.py as a better tool than device-specific scripts such
as flash-kevin.sh.  This will use the google-servo.conf file to look
up a device's serial number, so the user only has to provide the
device name.

It will not downnload any firmware file automatically, that still has
to be done by the user.

Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>

Check if the firmware file is present and exit with an error if not.

Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>

The lib directory is in the current directory i.e. $PWD rather than
$HOME.

Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>

root authored Dec 17, 2019 and Guillaume Tucker committed Dec 17, 2019

Add command line option to specify the Servo serial number in order to
be able to identify the device to program with flashrom.

This could be further improved by looking up the serial number from
the config file using the device name.

Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>

root authored Dec 12, 2019 and Guillaume Tucker committed Dec 17, 2019

Replace the "url" command line option with "fw" to use a local
firmware file and let the user download the firmware independently.

Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>

Update flashrom and libfdt to the versions from Chromium OS R80, that
is to say flashrom v0.9.9 and libfdt v1.4.7.

Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>

Add flash-kevin.sh to flash the firmware on a rk3399-gru-kevin.  This
will get a firmware from a given URL and save it locally, read the
firmware from the device into a backup file, erase the flash and write
the new firmware.

Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>

Add the binaries for flashrom and libfdt needed to flash some
Chromebok models such as the rk3399-gru-kevin using a Servo-Micro
board.  These were built within the Chrome OS chroot.

If we need to keep using flashrom and libfdt, we should consider
existing Debian packages and adding any Chrome OS specific patches if
needed rather than tracking binaries directly.

Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>