Getting OpenMoko working on host with Xephyr

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(→‎Launching Xephyr)
(→‎Starting the nested X server)
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[[Image:Xephyr.png]]
 
[[Image:Xephyr.png]]
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== A sample script ==
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The following script sets up the most of root fs environment automatically
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 +
<pre>
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#!/bin/bash
 +
#
 +
# Set-up x86 OpenMoko root jail. This script must be run as root.
 +
#
 +
# Root jail is an environment, where the file system root has been
 +
# changed to the OpenMoko root file system folder. Please don't
 +
# use the build/rootfs, but make a copy of it, since build/rootfs
 +
# gets overwritten each time you build openmoko-devel-image
 +
#
 +
# You need to set-up another X server (nested preferably) to
 +
# act as a OpenMoko screen. Otherwise chrooted applications are executed
 +
# as is on the host hardware and the kernel.
 +
#
 +
# See:
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#
 +
# http://wiki.openmoko.org/wiki/Getting_OpenMoko_working_on_host_with_Xephyr
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#
 +
#
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# 2007 Mikko Ohtamaa - Red Innovation Ltd.
 +
# <mikko@redinnovation.com>
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#
 +
# Do anything you wish with this script
 +
#
 +
#
 +
#
 +
 +
# Setup required environment variables
 +
 +
# Xephyr must listen to this DISPLAY
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DISPLAY=:1
 +
 +
# If we don't have locale, applications refuse to launch
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LANG=C
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# We are running as root in our chrooted environment
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HOME=/home/root
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export DISPLAY LANG HOME
 +
 +
# Update pango modules
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pango-querymodules > /etc/pango/pango.modules
 +
 +
# Update icon images
 +
gdk-pixbuf-query-loaders > /etc/gtk-2.0/gdk-pixbuf.loaders
 +
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# Mount /dev and /proc file systems
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mount --bind /dev ./dev
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mount -t proc none ./proc
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# Remove touch screen calibration start up app
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# It doesn't launch on x86 and prevents X booting
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if [ -e /etc/X11/Xsession.d/30xTs_Calibrate ] ; then
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        rm /etc/X11/Xsession.d/30xTs_Calibrate
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fi
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# Use host name server information so that
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# web browsing works
 +
cp /etc/resolv.conf etc/resolv.conf
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 +
# Enter into chroot jail
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chroot . /bin/sh
 +
 +
</pre>

Revision as of 22:39, 8 May 2007

The goal of this page is to show you how to run an OpenMoko development image on your host x86 development machine in a chrooted environment.

Contents

Build an image

First, you should use Building OpenMoko using the MokoMakefile to build an openmoko-devel-image for your host architecture (x86 in our case). Make sure you put the moko makefile in /home/moko/Makefile .

Prior to that, edit your build/conf/local.conf to make it look like this: 

MACHINE = "qemux86"
DISTRO = "openmoko"
BUILD_ARCH = "i686"
INHERIT += " devshell"
SRCDATE_eds-dbus = "now"

Once you have built the image, you can start working toward running the image.

Setup the image filesystem

The filesystem of the image can be found at /home/moko/build/tmp/rootfs . It is that image that we want to run in a chrooted environment.

We will copy that that rootfs directory somewhere so that subsquent builds (using the MokoMakefile for instance) don't overwrite it.

Make sure you have root privileges: 

su -

Copy the rootf into a directory called MokoBox. From now on, we will call the chrooted environment a MokoBox. 

cp -r /home/moko/build/tmp/rootfs /home/moko/mokobox

make sure /dev and /proc of the host machine are visible from within mokobox 

mount --bind /dev /homo/moko/mokobox/dev
mount -t proc none /home/moko/mokobox/proc

start the mokobox 

chroot /homo/moko/mokobox /bin/sh

In chroot'ed environment

set environment variables 

DISPLAY=:1
LANG=C
HOME=/home/root
export DISPLAY LANG HOME

Create pango.modules file 

pango-querymodules > /etc/pango/pango.modules

Create gdk-pixbuf.loaders file 

gdk-pixbuf-query-loaders > /etc/gtk-2.0/gdk-pixbuf.loaders

Remove touch screen calibrator. Since touch screen hardware is not present, the touch screen calibration prevents X start-up on PC. 

rm /etc/X11/Xsession.d/30xTs_Calibrate

Starting the nested X server

Supplying fonts

You might need to install fonts supplied by OpenMoko to your host system. The easiest way to do is in Gnome is to go Preferences -> Font - > Details -> Go to font folder and then drag and drop TTF font files from build/tmp/rootfs/usr/share/fonts/ in Nautilus.

Launching Xephyr

In another terminal (not related to mokobox), start Xephyr 

Xephyr :1 -ac -2button -host-cursor -screen 480x640

Now, back in chroo'ted environment, start X client: 

eval $(dbus-launch)
/etc/X11/Xsession

You should see OpenMoko booting in the Xephyr window.

Xephyr.png

A sample script

The following script sets up the most of root fs environment automatically 

#!/bin/bash
#
# Set-up x86 OpenMoko root jail. This script must be run as root.
#
# Root jail is an environment, where the file system root has been
# changed to the OpenMoko root file system folder. Please don't
# use the build/rootfs, but make a copy of it, since build/rootfs
# gets overwritten each time you build openmoko-devel-image
#
# You need to set-up another X server (nested preferably) to 
# act as a OpenMoko screen. Otherwise chrooted applications are executed
# as is on the host hardware and the kernel.
#
# See: 
#
# http://wiki.openmoko.org/wiki/Getting_OpenMoko_working_on_host_with_Xephyr
# 
#
# 2007 Mikko Ohtamaa - Red Innovation Ltd.
# <mikko@redinnovation.com>
#
# Do anything you wish with this script
#
#
#

# Setup required environment variables

# Xephyr must listen to this DISPLAY
DISPLAY=:1

# If we don't have locale, applications refuse to launch
LANG=C

# We are running as root in our chrooted environment

HOME=/home/root
export DISPLAY LANG HOME

# Update pango modules
pango-querymodules > /etc/pango/pango.modules

# Update icon images
gdk-pixbuf-query-loaders > /etc/gtk-2.0/gdk-pixbuf.loaders

# Mount /dev and /proc file systems
mount --bind /dev ./dev
mount -t proc none ./proc

# Remove touch screen calibration start up app
# It doesn't launch on x86 and prevents X booting
if [ -e /etc/X11/Xsession.d/30xTs_Calibrate ] ; then
        rm /etc/X11/Xsession.d/30xTs_Calibrate
fi

# Use host name server information so that
# web browsing works
cp /etc/resolv.conf etc/resolv.conf

# Enter into chroot jail
chroot . /bin/sh
Retrieved from "http://wiki.openmoko.org/index.php?title=Getting_OpenMoko_working_on_host_with_Xephyr&oldid=8320"
Personal tools

The goal of this page is to show you how to run an OpenMoko development image on your host x86 development machine in a chrooted environment.

Build an image

First, you should use Building OpenMoko using the MokoMakefile to build an openmoko-devel-image for your host architecture (x86 in our case). Make sure you put the moko makefile in /home/moko/Makefile .

Prior to that, edit your build/conf/local.conf to make it look like this: 

MACHINE = "qemux86"
DISTRO = "openmoko"
BUILD_ARCH = "i686"
INHERIT += " devshell"
SRCDATE_eds-dbus = "now"

Once you have built the image, you can start working toward running the image.

Setup the image filesystem

The filesystem of the image can be found at /home/moko/build/tmp/rootfs . It is that image that we want to run in a chrooted environment.

We will copy that that rootfs directory somewhere so that subsquent builds (using the MokoMakefile for instance) don't overwrite it.

Make sure you have root privileges: 

su -

Copy the rootf into a directory called MokoBox. From now on, we will call the chrooted environment a MokoBox. 

cp -r /home/moko/build/tmp/rootfs /home/moko/mokobox

make sure /dev and /proc of the host machine are visible from within mokobox 

mount --bind /dev /homo/moko/mokobox/dev
mount -t proc none /home/moko/mokobox/proc

start the mokobox 

chroot /homo/moko/mokobox /bin/sh

In chroot'ed environment

set environment variables 

DISPLAY=:1
LANG=C
HOME=/home/root
export DISPLAY LANG HOME

Create pango.modules file 

pango-querymodules > /etc/pango/pango.modules

Create gdk-pixbuf.loaders file 

gdk-pixbuf-query-loaders > /etc/gtk-2.0/gdk-pixbuf.loaders

Remove touch screen calibrator. Since touch screen hardware is not present, the touch screen calibration prevents X start-up on PC. 

rm /etc/X11/Xsession.d/30xTs_Calibrate

Starting the nested X server

Supplying fonts

You might need to install fonts supplied by OpenMoko to your host system. The easiest way to do is in Gnome is to go Preferences -> Font - > Details -> Go to font folder and then drag and drop TTF font files from build/tmp/rootfs/usr/share/fonts/ in Nautilus.

Launching Xephyr

In another terminal (not related to mokobox), start Xephyr 

Xephyr :1 -ac -2button -host-cursor -screen 480x640

Now, back in chroo'ted environment, start X client: 

eval $(dbus-launch)
/etc/X11/Xsession

You should see OpenMoko booting in the Xephyr window.

Xephyr.png