Touch your NetBSD

Touch your NetBSD
EHSM 2012
Berlin, Germany
Pierre Pronchery <khorben@netbsd.org>
Saturday, December 29th
2012

Background information

Freelance IT-Security consultant
DUEKIN Consulting
pierre.pronchery@duekin.com

OSDev hobbyist
The DeforaOS Project
khorben@defora.org

NetBSD developer
khorben@netbsd.org

Based in Berlin, Germany

Agenda
I. The concept
– DeforaOS Project
– NetBSD
II.Previous steps
– Openmoko Freerunner
– AFULTab contest
III.Current status
– Demo
– Technical details
IV.The future

Concept: DeforaOS (1/3)

Open Source project since 2005

Born from my frustration with the existing stuff:

I just wanted to synchronize IRC chat logs between
my two computers!

Rinse, repeat, apply (RSS, bookmarks, playlists, SCM,
documents... possibly running programs)

Really:

Ubiquitous computing

Seamless networking

All the more relevant today...

Three parts:
1.Self-hosted capability
kernel, libc, assembler, compiler...
2.Distributed framework
RPC, interfaces, services...
3.Desktop environment
desktop, embedded devices...
Portable, also meant to run on today's systems
Not fully implemented...

• Started with the kernel back then
...but I didn't know what to do!
• So I went from top to bottom:
– UNIX utilities and libc
– Graphical interface
– And then the more innovating parts
• Therefore, the system:
– The system works on existing platforms
– Progressively implement each part as need be
– Trying to build up and connect the different parts

Concept: NetBSD
IT'S OUT
THERE!!1
(6.0.1 too btw)
(©™ Nike)

Concept: NetBSD (1/2)
Discovered it at sysadmin school:
– « Install and network three different Operating
Systems together, sharing user data and
authentication; to make it equally difficult to
everyone, one of them has to be NetBSD 2.0 »
...but I liked it, using it daily since version 3.0
Personal preference:

Clean, portable, embedded, coherent

...fun!

Concept: NetBSD (2/2)
• About these silly rumors I heard:
– You do *not* have to compile anything at all
– Portability comes from good design (not a goal)
• Some advantages for this kind of project:
– Cross-compilation is free
– Target any NetBSD architecture from Linux, Mac...
• Reference system for DeforaOS development

Concept: NetBSD on tablets

Not really new:
– Sharp Zaurus
– uep(4)
– hpctp(4)
– sstouch on
s3c2440

Existing touchscreen framework: tpcalib

There was no modern touchscreen driver

Step: Openmoko Freerunner (1/3)

Worked with Bearstech on hackable:1

Debian-based GNU/Linux distribution, originally
for the Openmoko Freerunner

Smartphone released in 2008

ARM-based Open Source hardware

Ported the DeforaOS desktop for
such embedded platforms

Eventually made it on HTC TouchPro and Nokia
N900 as well

Step: Openmoko Freerunner (2/3

Step: Openmoko Freerunner (3/3)

Step: AFULTab contest (1/3)

AFUL is a French FOSS user group

Launched an international contest end of 2011:

Create a 100% OSS tablet within 6 months

Guidelines for hardware:
− 10” touchscreen, 6+ hours of battery life
− Wireless support, mobile networking...

Planned to use the WeTab tablet

Prepared on a Lenovo IdeaPad S10-3t

Presented at FOSDEM 2012

Step: Back in February... (1/2)

FOSDEM 2012, BSD Devroom

First functional demonstration:

uts(4) driver committed (touchscreen)

Many shortcomings:

Required some patches

Limited screen resolution

No wireless or mobile networking

Had not received the final hardware yet

Step: Back in February... (2/2)

FOSDEM 2012, BSD Devroom (still)

It looked like this:

Step: WeTab hardware
●
Intel Atom N450-based, 1.6 GHz, 1 GB RAM
●
11.6” multi-touch screen, 1366x768
●
Wireless chipset (Atheros)
●
Huawei 3G modem built-in, with GPS support
●
Bluetooth, 2 USB ports, SD card slot
●
32 GB internal flash
●
Front camera, MP


A few months later...

Received the WeTab

Co-won the contest in May 2012!

Released extensive documentation:
http://www.duekin.com/downloads/papers/WeTab%

Became a NetBSD developer in the process,
khorben@ (breaking USB keyboard drivers since
May 2012)

And it looked like this at the time:
(Solutions Linux 2012, NetBSD booth)

Overview
Citroën GT concept car (probably under copyright)

Overview: Under the hood
Reminder:
• NetBSD's kernel and base system
• Packages from pkgsrc
• Default to the DeforaOS embedded desktop
Make it a real tablet experience:
• Finger-based interaction
• Look appealing!
Here's my approach...

Overview: Boot time (1/2)
Splash screen!

Overview: Boot time (2/2)
Splash screen on genfb(4), 800x600 at 16 bpp

Particular JPEG format (not progressive)
Silent boot through boot.cfg, boot -z:
banner=Welcome to NetBSD [...]
menu=Boot normally:rndseed /var/db/entropy-file;vesa
800x600x16;splash /deforaos.jpeg;boot /netbsd.gz -z
menu=Boot normally (text mode):rndseed /var/db/entropy-
file;boot /netbsd.gz
menu=Boot single user:rndseed /var/db/entropy-file;boot
/netbsd.gz -s
menu=Disable ACPI:rndseed /var/db/entropy-file;boot /netbsd.gz
-2
menu=Drop to boot prompt:prompt
default=1
timeout=5

Overview: Instant use
Where “instant” means about 45 seconds (yay!)
GDM auto-login:

Can be configured through the graphical user
interface

Otherwise in /usr/pkg/etc/gdm/custom.conf:
[daemon]
AutomaticLoginEnable=True
AutomaticLogin=khorben

Overview: Calibration (1/2)

Set of patches, see PR kern/45872
$ wsconsctl -f /dev/wsmouse2 -ma
type=touch-panel
calibration.minx=0
calibration.miny=0
calibration.maxx=32767
calibration.maxy=32767
calibration.samples=0,0,0,0:32767,32767,1365,76
7:72,0,3,0:0,140,0,3
repeat.buttons=none
repeat.delay.first=0
repeat.delay.decrement=0
repeat.delay.minimum=0

There is also tpctl(8) for initial calibration

Overview: Calibration (2/2)
• Specification by Microsoft as “digitizer devices”:
http://msdn.microsoft.com/en-us/library/windows/ha
• Really a USB HID device, working like a mouse
• ...or like two simultaneously (relative, absolute)
• Good to know: device mode through usbhidctl
$ usbhidctl -f /dev/uhid1
Device_Configuration.Finger.Device_Mode=2

Overview: X11 support

xf86-input-mouse needs support for absolute
coordinates (through wscons)

Both base and pkgsrc should be patched now

Needs more work: wrong coordinates when the
screen is rotated in portrait mode...

Overview: Gtk+ settings
• ~/.Xdefaults, set DPI:
!Xft
Xft*dpi: 132
• ~/.gtkrc-2.0, some possibilities:
gtk-icon-sizes=...:panel-smaller=24,24:panel-
small=32,32:panel-large=48,48
gtk-touchscreen-mode=1
• Additional tweaking through the Gtk+ engine:
– Larger scrollbars...
• Third button emulation:
export GTK_MODULES=libgtkstylus.so

Overview: DeforaOS desktop (1/2)
●
wip/deforaos-desktop, meta-package:
– deforaos-browser deforaos-camera
– deforaos-editor deforaos-keyboard
– deforaos-locker deforaos-mixer
– deforaos-panel deforaos-pdfviewer
– deforaos-phone deforaos-player
– deforaos-surfer deforaos-todo
– libgtkstylus matchbox-wm (for now)
• For embedded devices, set in /etc/mk.conf:
PKG_DEFAULT_OPTIONS+=embedded

Overview: DeforaOS desktop (2/2)
User's ~/.Xclients file:
#!/bin/sh
export GTK_MODULES=libgtkstylus.so
desktop &
dhcpcd-gtk &
locker &
panel &
phone &
exec matchbox-window-manager -use_titlebar no
-use_cursor no -use_desktop_mode plain

Overview: Screensaver, unlocking

Overview: powerd integration
• Panel notifications:
_message()
{
DISPLAY=:0.0 /usr/bin/su -- "khorben"
-c "/etc/powerd/actions/message '$1' '$2'"
}
• Power management, /etc/powerd/scripts/*:
_message -E 'All hell loose, power down.'

Overview: Mobile networking
DeforaOS Phone calls pppd in pty
mode, see /etc/ppp/peers/phone:
notty
defaultroute
local
noauth
usepeerdns
Name resolution via resolvconf(8),
see the /etc/ppp/ip-up and ip-down scripts:
[ “$USEPEERDNS” -eq 1 ] && /sbin/resolvconf -a “$1”
< /etc/ppp/resolv.conf
/sbin/resolvconf -d “$1”

Overview: Wireless networking

dhcpcd-gtk from Roy Marples

In wpa_supplicant.conf, set:
ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=wheel
update_config=1

In rc.conf, set:
dhcpcd=YES dhcpcd_flags=”-bq”
wpa_supplicant=YES wpa_supplicant_flags="-B
-iath0 -c/etc/wpa_supplicant.conf"

Overview: GPS support
• Add /dev/ttyU2 and /dev/ttyU3:
# cd /dev && ./MAKEDEV ttyU2 ttyU3
• Enable the GPS plug-in in DeforaOS Phone
• Click “Start” in the GPS preferences there
• Install and configure geography/gpsd
• Start wip/foxtrotgps:
GLib (gthread-posix.c): Unexpected error from
C library during 'pthread_mutex_unlock':
Operation not permitted. Aborting.
Abort trap (core dumped)
• More work required...

Overview: Hardware support

Fully supported:

Video camera, uvideo(4)

Some issues remaining:

Touchscreen, uts(4) (multi-touch...)

3G modem, u3g(4) (maybe not related)

Wireless support, ath(4) (likewise)

Video driver, x11/xf86-video-intel (HDMI output)

Needs more ♥

GPS, via u3g(4) and wip/foxtrotgps

Power management (suspend, permissions)

Future
<insert picture of a skate hoverboard here>

Future: I can haz potentialz

NetBSD on the Nokia N900

A NetBSD-based Open Source phone?

Future: NetBSD/N900
• Kernel configuration file committed upstream
• Installer starts (sysinst)
• mount_chfs(8) for flash-based storage
• Keyboard driver ongoing (needs OMAP I2C)
• More drivers required:
– Modem, audio, sensors, camera, USB OTG...
– Flash memory optionally (Onenand)

Future: DeforaOS on Github (1/2)

Future: DeforaOS on Github (2/2)
• 41 repositories by now
• A lot is still broken after migration from CVS :(
– Daily builds
– Development mailing-list
– Meta-project tree
– Repository browsing from the website...

Future: More on DeforaOS
• Make the ubiquitous seamless networking
computing goodness happen!
• Also, switch to Gtk+ 3:
– Finger scrolling?
– (almost ready)
• Other ideas?

Future: But for now...

DeforaOS Project, http://www.defora.org/

NetBSD Project, http://www.netbsd.org/

DUEKIN Consulting at http://www.duekin.com/

Myself at http://people.defora.org/~khorben/
@khorben on Twitter

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