Wireless problem

There are several problem with the wireless right now.

1. When system boots up, it does not sync the time yet. Once an IP address is oabtained, shortly after, the server would find the local time is way off. Then the IP will be lost. No more connection thereafter.

2. The http_sync_time.py entry in the /etc/init/rc script does not work at this moment.
solved by adding /usr/sbin/http_sync_time.py in the first line of /etc/init/rc.local

Start sleep mode

http://ubuntuforums.org/showthread.php?t=1428387

Add sudoer

You can add an entry in /etc/sudoers to enable yourself as sudo uers.

==================
setup ALL=NOPASSWD: ALL
==================


You have to add the entry to the last line.

ERROR: XXXX in conf/checksums.ini, not checking URI

NOTE: Missing checksum
ERROR: XXXX in conf/checksums.ini, not checking URI


In your build directory you have tmp/checksums.ini, you can copy the entry for
rt... to conf/checksums.ini in the OE metadata... and obviously send a patch
if that makes sense.

mingetty.bb for autologin

DESCRIPTION = "small Linux console gett"
HOMEPAGE = "http://sourceforge.net/projects/mingetty"
LICENSE = "GPL"
PR = "r0"

inherit base
SRC_URI = "file://mingetty-1.08.tar.gz"
FILES_${PN} = "${base_sbindir}/mingetty"
PACKAGES = "${PN} ${PN}-doc"
CFLAGS += "-D_GNU_SOURCE"
do_install() {
install -d ${D}${base_sbindir}
install -m 0755 ${S}/mingetty ${D}${base_sbindir}/
install -d ${D}${mandir}/man8
install -m 0644 ${S}/mingetty.8 ${D}${mandir}/man8/
}

Latest backup

The latest backups are in

~/kernel/good_backup/

The demo_April is for Jonathan with early development V19.

The demo_May is the latest backup with development V26

To backup a rootfs:

=================
cd /media/root
sudo tar fcpv Backup.tgz --exclude Backup.tgz *
=================

To restore a rootfs:
=================
sudo tar xpfv Backup.tgz -C /media/root/
=================

Install wxpython

Since the python code is based on the wx, you need install wxpython on the root file system.

-------
sudo apt-get install python-wxversion
-------

Write x-loader to NAND

make sure you have signed your x-load.bin and copied x-load.bin.ift to your mmc.

mmc init
fatload mmc 0:1 80000000 x-load.bin.ift
nand unlock
nandecc hw
nand erase 0 80000
nand write 80000000 0 80000


Then, you can reboot.

New resources

http://gitorious.org/beagleboard-validation/

The most updated place for xloader, uboot, and uImage

rootfs update

If you don't like the Angstrom logo, here is how to change it.
recipes/base-files/base-files/angstrom/issue

Here is the website you want to check out for the ascii-art:
http://ascii.mastervb.net/


Finally, I figured out a receipt that works with my own file.
The following receipt should work for minimal boot.

-----------------------
#Based on Angstrom minimal gpe image
# This image provides a barebone dm and 'desktop'
# Very angstrom and opkg centric

XSERVER = "xserver-xorg \
xf86-input-evdev \
xf86-input-mouse \
xf86-video-fbdev \
xf86-input-keyboard \
"

RDEPENDS_kernel-base = ""

export IMAGE_BASENAME = "myboot-image"

PR = "r2"

DEPENDS = "my-task-boot"
IMAGE_INSTALL = "\
${XSERVER} \

hello \
python \
python-pygtk \
netbase \
task-base \
base-files \
base-passwd \
angstrom-x11-base-depends \
xterm \
xinit \
"
inherit image

---------------------

build rootfs from OE

I made a copy of the beagleboard-demo-image and changed a few things to make my own rootfs.

angstrom.inc, angstrom-2008.1.conf were changed in the receipts directory.

My-beagleboard-demo-image.bb
--------------
# Demo image for beagleboard

XSERVER ?= "xserver-xorg \
xf86-input-evdev \
xf86-input-mouse \
xf86-video-fbdev \
xf86-input-keyboard \
"

export IMAGE_BASENAME = "My-beagleboard-demo-image"

DEPENDS = "task-base"
IMAGE_INSTALL = "\
${XSERVER} \
my-task-beagleboard-demo \
"

IMAGE_PREPROCESS_COMMAND = "create_etc_timestamp"

#zap root password for release images
ROOTFS_POSTPROCESS_COMMAND += ' ${@base_conditional("DISTRO_TYPE", "release", "zap_root_password; ", "",d)}'
#ROOTFS_POSTPROCESS_COMMAND += 'set_image_autologin;'

inherit image
------------------


my-task-beagleboard-demo.bb
-----------------
DESCRIPTION = "Task for Beagleboard-demo-image"

PR = "r16"

inherit task


RDEPENDS_${PN} = "\
# task-proper-tools \
# task-base-extended \
# angstrom-x11-base-depends \
hello \
xterm \
xinit \
xauth \
openssh-scp openssh-ssh \
network-manager-applet \
python \
python-pygtk \
# python-pycairo \
# python-pygobject \
netbase \
"

# Install all kernel modules
RRECOMMENDS_${PN} += " \
# kernel-modules \
# rt73-firmware \
# zd1211-firmware \
"

PACKAGE_ARCH = "${MACHINE_ARCH}"
RRECOMMENDS_${PN}_append_armv7a = " \
omapfbplay"
-----------------

Openembedded

Install openembedded:
--------------
git clone git://git.openembedded.org/openembedded
--------------

Find out the branches they have:
---------------
git branch -a
---------------

Checkout a branch and bring it to local:
---------------
git checkout -b stable2009 remotes/origin/stable/2009
---------------

After install, you need set the kernel variable to 0. Otherwise, locale will complain later

---------------
echo 0 > /proc/sys/vm/mmap_min_addr
---------------

If the above line generate an access denied error, use:

---------------
sudo -s
---------------

New Hard drive installed.

80G for openembedded is not enough. The harddrive is full again.

New 320G is installed. To find the UUID

----
sudo blkid
----

To copy your home direcotory

----
sudo rsync -avxP /home/setup /mnt/NewHome
----

Do not forget to change your /etc/fstab

qemu to simulation boot

Openembbed can create a rootfs for your system to use. Once you have the rootfs, you can put that to your rootfs image and test it with qemu.

To create your rootfs image, you need following steps:

---------------
qemu-img create rootfs.img 512M
sudo mkfs.ext3 -F rootfs.img
sudo mount -o loop rootfs.img ./tmp
sudo tar xpfv myboot-image-beagleboard.tar -C ./tmp
sudo umount ./tmp
---------------

To use qemu, you also need a kernel file, which can be downloaded here.

You can test your rootfs using the following command. So you do not need to run back and forth to your board any more.

--------------
qemu-system-arm -M versatilepb -cpu cortex-a8 -kernel ./vmlinuz -hda rootfs.img -m 256 -append "root=/dev/sda mem=256M devtmpfs.mount=0 rw"
--------------

beagleboard-demo-image

OE beagleboard demo image failed due to pygtk package.

The following files have pygtk2 in them.

-------------------
setup@BeagleSetup:~/stuff/openembedded$ grep pygtk2 -R *
recipes/gnome/hippo-canvas_0.3.0.bb:DEPENDS = "librsvg python-pygtk2"
recipes/python/python-pygtk_2.10.4.bb:PROVIDES = "python-pygtk2"
recipes/python/python-pygtk_2.16.0.bb:PROVIDES = "python-pygtk2"
-------------------

The following files have hippo-canvas in them:

-------------------
setup@BeagleSetup:~/stuff/openembedded/recipes$ grep hippo-canvas -R *
sugar/sugar-base_0.84.1.bb: hippo-canvas \
sugar/sugar-base_0.83.2.bb: hippo-canvas \
sugar/sugar-base_0.82.2.bb: hippo-canvas \
-------------------


Still have no clue. :(

bitbake error

I played with the git branch a little bit, out of sudden, the bitbake does not work anymore. The error message was:

----------------
ERROR: Openembedded's config sanity checker detected a potential misconfiguration.
Either fix the cause of this error or at your own risk disable the checker (see sanity.conf).
Following is the list of potential problems / advisories:
----------------

After a search, there are several solutions. Since I updated the branch, everything need to be rebuild again. I need to an empty file:

----------------
touch ~/stuff/build/conf/sanity.conf
----------------

embedded overlay

http://gitorious.com/gumstix-oe/mainline/commit/4f6a0e5
http://www.kernel-labs.org/files/openembedded-guide/openembedded-guide-6.html
http://wiki.openmoko.org/wiki/Python#Minimal_GTK_gui

Add wireless

auto wlan0
iface wlan0 inet dhcp
wireless-essid MYNETWOTK
wireless-key FEFEFEFEFE
wireless-channel 11
wireless-mode managed

Bootup time.

There are a few links about reducing boot up time.

http://elinux.org/Boot_Time
http://free-electrons.com/docs/optimizations/
http://guvnr.com/pc/ubuntu-disable-services/

Splash Screen

The latest Karmic ubuntu use xsplash. All the pictures are in /usr/share/image/xplash.

Here is a link you want to check out if you want to change it.
http://georgia.ubuntuforums.org/showthread.php?t=1333683

To totally remove it to save time on boot.

cp /etc/dbus-1/system.d/xsplash.conf ~/xsplash.conf
sudo rm /etc/dbus-1/system.d/xsplash.conf
sudo touch /etc/dbus-1/system.d/xsplash.conf