[gnome-build-meta.wiki] Create Pinebook Pro image

[Valentin David <valentindavid src gnome org>]

commit 2e3a27240a67647c50322f289cc7a25127951535
Author: Valentin David <me valentindavid com>
Date:   Sun Apr 19 09:39:55 2020 +0000

    Create Pinebook Pro image

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+# Pine book
+
+The [Pinebook Pro](https://wiki.pine64.org/index.php/Pinebook_Pro) is a $200 arm 64 laptop from PINE64.
+
+Build `boards/pinebook-pro/image.bst`. Checkout the result.
+
+In the artifact, there will be a file named `disk.qcow2`. You can flash it to an sd card or an eMMC module 
using `qemu-img dd if=disk.qcow2 of=/dev/device-to-which-to-write`.
+
+If you do not get anything to boot, I recommend you use the serial port of the computer to debug the issue.
+
+## Updating the keyboard/trackpad firmware
+
+Some first batches of the Pinebook Pro require a firmware update. Unfortunately, there is no automatic way 
to do it at the moment.
+
+If your keyboard is an ISO keyboard, do the following.
+
+```
+$ sudo pinebook-pro-keyboard-updater step-1 iso
+```
+
+Then reboot. After reboot:
+
+```
+$ sudo pinebook-pro-keyboard-updater step-2 iso
+```
+
+Then reboot one more time. The firmware is updated.
+
+If you have an ANSI keyboard, replace `iso` by `ansi` in the command line.
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