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Openmoko is the distribution that we're creating for phones and eventually other mobile devices.
See Trademark Policy for information on the Openmoko trademark policy.
It has the following software stack:
Template:Ui img path/software_stack2007.png
A printer-friendly version can be found here.
NOTE: This article needs to be updated to reflect our current architecture. |
The Kernel Space consists of the Bootloader, the Kernel, and Power Management.
The Bootloader is u-boot. We will have the following requirements:
The Kernel is based on the 2.6.x mainline using the moko patch set. It was planned to use TomTom's patches as they did extensive work with the Samsung 2410 application processor and added great support for SD cards. Currently their patches will allow support for almost all vendors’ SD cards. Kernel work is divided into the following components:
The flash functions as a MTD using the standard Linux access. It will run the JFFS2 filesystem over the entire flash. We would like to have some type of encryption on the user’s data. This will be configured in the User Interface at a later time. But for now, we should build the supporting framework.
The sound driver for the codec uses Advanced Linux Sound Architecture (ALSA) with the ASoC glue code. This is the standard for Linux sound cards.
This is an LCD backlight class driver.
The keypad driver will use the standard Input device /dev/input.
The touch screen driver uses the standard Input device /dev/input/touchscreen0.
Stub: This is a stub. You can help OpenMokoWiki by expanding it. |
We will need USB host / client support for Linux, OS X, and Windows. It should support the following features:
This will serve as one of our methods to develop code for the device. It will allow us to have a filesystem larger than the actual flash size. See Booting_from_NFS for setup details.
Bluetooth support will be based on the Linux standard called BlueZ. We will support the following profiles:
Stub: This is a stub. You can help OpenMokoWiki by expanding it. |
This is the GSM interface part. It is based on the idea of creating multiple serial devices out of one physical serial device. This code will be based work from the openEZX project and the original Motorola architecture. It will also provide ipsec for secure VPN connections.
The following diagram depicts the general architecture:
Template:Ui img path/gsm_interface.png
A printer-friendly version can be found here.
2.5G (no EDGE) access to the Internet.
This is using the LED class interface. This may be troublesome for mainline merging, but it makes no sense to invent a new subsystem which would be 100% identical to the LED class interface.
The Power Management Unit will interface with the standard kernel I2C interface. The actual power states transitions are TBD.
NOTE: We will use glibc (not uClibC) and libX11 (full, not diet) for the first incarnation of this product. The alternatives may save more space and be more optimized, but are more likely to give us integration headaches. We will have to reconsider this decision for later releases. |
Most of these core services include a daemon and a library.
sshd enables a remote shell login via network.
udev is responsible for managing the device nodes in the /dev pseudo file system.
bluez is the Linux Bluetooth subsystem.
dbus is an interprocess communication subsystem.
A lightweight window manager from the O-Hand
KDrive-fbdev is a lightweight X11 server that runs directly on a Linux FrameBuffer.
The X11 library.
GTK+ is a rich GUI-Toolkit. It's the foundation for the Gnome project
Currently included applications that are accessible from the application menus are found here. This consists of both Stylus-based and Finger-based applications.
Complete specifications for all the Finger-Based Applications are found here.
Complete specifications for all the Stylus-Based Applications are found here.
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