genode/doc/news.txt

                               ===========
                               Genode News
                               ===========


New issue tracker at Github
###########################

| To promote open development, the new issue tracker replaces both the public
| tracker at Sourceforge and the tracker formerly internal to Genode Labs.

As promised earlier, Genode has got a new issue tracker at Github:

:[http://github.com/genodelabs/genode/issues]:

Please use this tracker to report and discuss Genode-related issues from now
on. The old public tracker at Sourceforge is still there but all issues have
been either closed or migrated to Github.


Steps towards an open development process | 2011-12-05
######################################################

| Genode is going to embrace an open and transparent development process.

Posted by Norman Feske at the Genode mailing list:

Over the past four years, the Genode OS Framework has seen rapid progress.
Skimming over the release notes of the past releases makes me very proud. It is
clear that the project's development is going stronger than ever. However, at
the same time, I recognise that progress on a technical level is only one part
of a successful Open-Source project. A certainly even more important part is
the participation of a diverse community. This is where our project is vastly
underdeveloped. By continuing the development at status quo, Genode will
continue to steadily improve but it will not be able to capture a significant
position in the operating-systems world. Instead, it will possibly remain a
curiosity. Therefore, we Genode developers regard the transition of our work to
an open and transparent development process as the next big challenge we want
to tackle.

Review of the situation
=======================

Even though Genode is an Open-Source project, its development has been pursued
largely behind the closed doors of our company Genode Labs. The planning of the
road map, most technical discussions, issue tracking, and revision management
are used to be done within the company. There had been two reasons for this
policy namely the preservation of exclusivity and the efficiency of
coordination.

Regarding the first reason, when we started our business, we desired to
preserve a certain degree of competitive advantage to ourselves by keeping some
information "protected" from the public eye. For example, revealing the
detailed history of the over 5000 source-code revisions of the project would
enable any outsider or competitor to deeply analyze the way of how our company
works. These concerns had been acknowledged by other startup companies with
statements in the line of "Open-Source has hurt our business".

The second reason is the way of how humans intuitively work together in a
non-distributed environment such as a our small company. Instead of discussing
technical matters on a mailing list, it appears to be much easier and
presumably more efficient to engage in face-to-face conversations. The writeup
of our releases notes at regular intervals served us as an instrument to
recapture the rationale behind our discussions and document it. This worked
exceedingly well. In comparison, discussing every detail on a mailing list
seems to be inconvenient.

Why do we desire a change?
==========================

The answer to this question can be put quite simply as "to make the project
relevant". But it goes deeper than that. First, we see ourself as Free-Software
AND Open-Source advocates. I wholeheartedly disagree with statements that
suggest that Open Source is incompatible with having a business. For us, the
contrary is true. Without Free and Open-Source Software, there would be no
Genode Labs. The great wealth of the GNU software stack forms the basis of all
the tools we use every day and it plays a significant role for our passion to
develop software. Furthermore, Genode would not be of much value without all
the great building blocks in the form of existing Open-Source code that we
reuse in our context. Hence, it is our personal desire to contribute to the
Free and Open-Source software world and to intensify the collaboration with
other projects with the same spirit.

We still see the preservation of a certain degree of exclusivity as important
for our dual-licensing business model. If we made Genode available under the
BSD license, there would be not point in pursuing this model. However, hiding
the development process from the public is not only poor-spirited but it
creates an artificial barrier for people who want to participate. The book
"Producing Open Source Software" (http://producingoss.com) by Karl Fogel was an
eye opener to us.

Regarding the efficiency of collaboration, I have to admit that the statement
above about how great the current way works is really not well-founded - simply
because we haven't tried the alternative to discuss everything in public, yet.
Obviously, we are risking to spoil our presumed efficiency by changing the mode
of collaboration. On the other hand, by documenting the process of solving each
problem in the form of public mailing-list postings, we give everyone the
chance to contribute to and to learn from our findings.

The next steps
==============

We take the current release cycle as opportunity to execute our plan to open
the development process. Our coarse schedule is to migrate our internal issue
tracker to the public until mid of December. From this day on, all issues will
be tracked publicly. The place for all technical discussions will be the Genode
mailing list. Until mid of January, we will prepare a new public source-code
tree in the form of a Git repository that we will then use as mainline
development tree.

As a further change of policy, we plan to include all documentation as found on
the website in the mainline repository and remove the Wiki. This way,
contributions to the documentation will be handled in the same way as code
contributions.

I hope that our designated change is in the interest of all of you and I look
forward to see how it will impact the further progress of Genode.

Best regards

Norman


Genode OS Framework release 11.11 | 2011-11-29
##############################################

| With version 11.11, we explore a plethora of options of combining Genode with
| virtualization techniques.

The overall theme of Genode 11.11 is the exploration of various levels of
virtualization, ranging from faithful virtualization, over paravirtualized
Linux, to custom variants of OS-level and application-level virtualization. The
latter approach is particularly related to Genode and provides us with a novel
approach to user-level debugging.

Each of the experiments were conducted with concrete goals. The goal for
enabling faithful virtualization was to integrate the high-performance
Vancouver virtual machine monitor (VMM) into Genode. This VMM implementation
used to be tied to a NOVA-specific user land. With Genode 11.11, it becomes
apparent how this virtualization technology and Genode's component framework
can cross-fertilize.

Our work on paravirtualized Linux was motivated by the goal to execute Android
as a node in Genode's process tree. Based on the L4Android project and L4Linux,
our work comprised the implementation of Genode-specific stub drivers for
L4Linux. This way, L4Linux can be tightly integrated with Genode interfaces for
block devices, framebuffer, input, UART, and network.

With Noux, Genode brings along a custom OS-level virtualization approach aiming
at the execution of unmodified command-line based GNU software on Genode. The
immediate goal for this release was to develop Noux to a level that enables us
to run VIM as Genode sub system. This work involved extending the Noux runtime
as well as creating a terminal emulator.

For the highest abstraction level of virtualization on Genode, we coined the
term application-level virtualization. Enabled by the sandboxing inherent to
Genode's architecture, we implemented a solution for user-level debugging via
the GNU debugger. The solution fits perfectly with the Genode architecture and
provides powerful debugging facilities without compromizing the security of the
system.

[ title="Release notes for the Genode OS Framework 11.11"

To learn more about those and many other improvements, please read on the
[http:/documentation/release-notes/11.11 - release notes of version 11.11...]


Android on top of Genode | 2011-09-27
#####################################

| With the new support for L4Android, the Android software stack can be used as
| Genode sub system.

As of today, Google's Android OS is apparently one of the hottest topics in the
world of smartphones and tablets. Among the users of Genode, we recognise a
general interest in combining the framework with the Android platform. With <a
class="external-link" href="http://l4android.org">L4Android</a> there already
exists a special variant of the L4Linux kernel that is able execute the Android
software stack on top of the Fiasco.OC kernel.

Our port of L4Linux to Genode in May has shown that L4Linux works well with
Genode. Since L4Android is derived from L4Linux, we were confident that we
could adapt L4LAndroid to Genode in a similar way. We are happy to report that
this feature has now become available at our subversion repository. With the
new support of L4Android on Genode, Android can be used on Genode on the
Fiasco.OC kernel on the IA32 architecture. For those of you who are eager to
experiment with L4Android on Genode, please find further information at the
top-level
[http://genode.svn.sourceforge.net/viewvc/genode/trunk/ports-foc/README - README]
file of the 'ports-foc' repository and share your results with us at the
[http:/community/mailing-lists - Genode mailing list].


Genode OS Framework release 11.08 | 2011-08-17
##############################################

| Version 11.08 introduces a unified workflow for dealing with all microkernels
| supported by the framework. This way, application scenarios can be ported
| from one kernel to another in an instant.

The Genode OS Framework aspires to provide a common ground for creating
microkernel-based operating systems, relieving developers from wasting efforts
in duplicating other people's work such as implementing basic device drivers,
tools, and application runtimes. Because in the microkernel domain, each
development poses different requirements, there is no single microkernel that
fits all purposes. Instead, there exist a plethora of different kernels, each
focused on different use cases. By supporting as many as 8 different kernels at
API level, Genode allows users of the framework to develop an application once
while preserving the freedom to pick the kernel that fits best with the use
case at hand. Still, each kernel uses to come with different tools,
configuration mechanisms, and boot concepts. Even though Genode programs can be
developed in a kernel-independent way, the deployment of such programs still
required profound insights into the peculiarities of the respective kernel. The
new version 11.08 of the framework addresses these concerns by providing a
unified workflow for all supported kernels. Downloading and using a different
kernel has become a matter of a few minutes and requires no prior knowledge
about the kernel.

In addition to the new tooling support, the current release advances the
framework's block-device infrastructure and extends the support for ARM
platforms. There are several new drivers for peripheral devices such as AHCI,
SD-card, and IDE, a new block-partition service, and libc support for accessing
VFAT partitions. The ARM support has been extended to cover both L4Linux (on
Fiasco.OC) and Qt4 (ARMv6, ARMv7). Furthermore, the new version is accompanied
with a comprehensive documentation update.

Read [http:documentation/release-notes/11.08 - the full story]
about the various improvements that come with the version 11.08...


Genode OS Framework release 11.05 | 2011-05-26
##############################################

| The Genode version 11.05 advances the Fiasco.OC platform support to the same
| level as the other fully-featured base platforms, enables the use of L4Linux
| with Genode, and introduces a brand new API for inter-process procedure calls.

Fiasco.OC is a modern microkernel developed at the OS Group of the University
of Technology Dresden. It is highly regarded for two reasons, its comprehensive
support for different CPU architectures and the user-level variant of the Linux
kernel called L4Linux. Now, those advantages have become available to the users
of Genode. Thereby, new usage scenarios can be realized by combining the
L4Linux virtualization solution with Genode's rich set of components such as
Qt4, lwIP, and a growing number of device drivers.

Our custom kernel implementation for MicroBlaze-based SoCs has undergone a
major upgrade to enable the implementation of user-level device drivers. To
make this platform easy to explore, the release is accompanied with a reference
SoC that is ready-to-use on the Xilinx Spartan3A Starter Kit.

The most significant API-related change of the framework is a brand new API for
implementing remote procedure calls across process boundaries. The new RPC API
takes our experience during last 5 years of Genode development into
consideration and alleviates long standing shortcomings of the original
inter-process communication API.

To pave the way towards the use of Genode for productive use, we have started
to explore ways to make standard debugging solutions available to Genode. Our
new GDB monitor implementation speaks the GDB protocol over TCP/IP and thereby
enables the GNU debugger to inspect a user-level Genode process via a remote
connection.

Read the complete story about these and many more changes in the
[http:/documentation/release-notes/11.05 - release notes of version 11.05...]


Exciting challenges ahead | 2011-03-24
######################################

| Explore more than 30 new Genode-related project proposals at our challenges
| wiki page

With each new Genode release, the scope of feasible use cases for the framework
grows and motivates us to reach out for new ambitious goals. There is a
dedicated [http:/community/wiki/Challenges - Wiki page] for collecting those
ideas. After having released the version 11.02 of the framework, we took the
chance to reiterate the many ideas that popped up recently, ideas ranging from
the support of diverse potential base platforms, over creative combinations of
Genode with other Open-Source projects, to novel tools and applications.

So if you are curious about what kinds of projects we have in mind in the mid
term, have fun browsing through the project proposals. If one of these topics
catches your interest, we'd be happy about you joining in with the development
or discussing those ideas at our [http:/community/mailing-lists - mailing list].
Also, if you have additional ideas, please do not hesitate to tell us more.

Discover the Wiki page about our
[http:/community/wiki/Challenges - future challenges...]


Norman Feske introduces Genode on YouTube | 2011-03-10
######################################################

| Bas de Lange has published the footage of Norman Feske's talk at the Software
| Freedom Day 2010 in Amsterdam

In his talk, Norman Feske sheds light on the background behind the company
Genode Labs, introduces the Genode OS architecture, and demonstrates the
concepts live. The talk was recorded at the
[http://www.softwarefreedomday.eu - Software Freedom Day 2010] event in
Amsterdam. Thanks to Bas the Lange for publishing the material.

: <object height="385" width="480">
:  <param name="movie" value="http://www.youtube.com/v/Z1IMV3FJO7Q" />
:  <param name="allowFullScreen" value="true" />
:  <param name="allowscriptaccess" value="always" />
:  <embed width="480" height="385" allowfullscreen="true"
:         allowscriptaccess="always"
:         type="application/x-shockwave-flash"
:         src="http://www.youtube.com/v/Z1IMV3FJO7Q">
:  </embed>
: </object>

[http://www.youtube.com/watch?v=Z1IMV3FJO7Q - Visit the YouTube page...]


Genode OS Framework release 11.02 | 2011-02-24
##############################################

| Version 11.02 of the framework adds support for the Fiasco.OC and NOVA v0.3
| kernels as well as a new custom kernel platform targeted at softcore CPUs.
| Furthermore, we introduce the Noux execution environment for using GNU
| software natively on Genode.

The Genode project takes another leap forward regarding the use of different
kernels as base platforms for using the framework. The new supported Fiasco.OC
kernel offers a rich feature set that is unmatched by any other open-source
microkernel. It works with the x86_32, x86_64, and ARM architectures, features
capability-based security, scales to multiple CPUs, and provides special
optimizations for running virtualized operating systems on top. Genode can now
leverage the advanced features of this kernel, in particular those related to
enforcing strict security policies.

With NOVA and Fiasco.OC, there have now become two kernels available that are
capable of enforcing Genode's security architecture at kernel level. Speaking
of NOVA, we are happy to report to have upgraded Genode's NOVA support to
version 0.3 of the kernel. This version was released earlier this month and
brings many of the features we desired, the most important being the revocation
of resources. With the new version, NOVA has now become a base platforms that
supports the entire Genode API without compromises.

In addition to broadening the support for existing kernels, we have started to
reach out into kernel land for running Genode on softcore CPU as found in
FPGA-based SoCs. Our custom kernel architecture achieves a further reduction of
TCB complexity by consolidating kernel functionality with Genode's user-level
core. The current implementation is able to run core and multiple instances of
nested init processes on the Xilinx MicroBlaze CPU.

The most significant functional addition to the framework is a new execution
environment called Noux that enables running unmodified GNU software on top of
Genode. Even though in an early stage, Noux is already able to execute GNU
coreutils without requiring manual porting work.

Read on about further details regarding the new kernel platforms, the vision
behind Noux, and many more improvements of the framework in the
[http:/documentation/release-notes/11.02 - release notes of version 11.02].


Genode OS walk-through on YouTube | 2010-12-22
##############################################

| Check out our new screencast presenting the Genode Live CD 10.11.

For those of you who like to get a glimpse of our recently released
Live CD but hesitate to download and boot the ISO image, we have
prepared the following screencast with a guided walk-through. Enjoy!


: <object height="385" width="480">
:  <param name="movie"
:         value="http://www.youtube.com/v/CJdWOmajo_8?fs=1&amp;hl=en_US" />
:  <param name="allowFullScreen" value="true" />
:  <param name="allowscriptaccess" value="always" />
:  <embed width="480" height="385"
:         src="http://www.youtube.com/v/CJdWOmajo_8?fs=1&amp;hl=en_US"
:         type="application/x-shockwave-flash" allowscriptaccess="always"
:         allowfullscreen="true">
:  </embed>
: </object>

[http://www.youtube.com/watch?v=CJdWOmajo_8 - Visit the YouTube page...]

[http:/download/live-cds - Download the real thing...]


Genode OS Framework release 10.11 | 2010-11-30
##############################################

| With version 10.11, Genode has become able to run network drivers of the gPXE
| project, employ user-level on-demand paging, and use advanced graphics with
| the nitpicker GUI server.

With the [http:/download/live-cds - recently published Live CD], the Genode
project has reached a new stage by integrating advanced device drivers, complex
protocol stacks, and real-world applications into one dynamic setup. The new
Genode release 10.11 bears fruit of the intensive effort that went into this
important milestone. There are improvements and functional additions all over
the code base. To highlight a few, we enhanced the Nitpicker GUI server to
support alpha blending, added an execution environment for running network
drivers of the gPXE project, completed the implementation of Genode's concept
for user-level page-fault handling, and further advanced the integration of the
paravirtualized Linux kernel with Genode's native interfaces for networking,
block-device access, graphics, and audio.

Furthermore, the release comes with a number of new components such as a
virtual network bridge and a http-based block server, which can be combined
with the existing components to open up new use cases of the framework.

Please enjoy the [http:/documentation/release-notes/10.11 - full description]
of all the improvements that come with version 10.11.


Genode Live Demonstration 2010-11 | 2010-11-16
##############################################

| The new Genode Live CD showcases the vast functional progress during the past
| year in a selection of five demos ranging from native Qt4/Webkit support to
| hardware-accelerated 3D graphics.

Since the release of the previous Genode Live CD in September 2009, we focused
our development work on supporting native Qt4/Webkit applications, user-level
Linux, sound support, Mesa/Gallium3D, block drivers, and a networking stack.
Furthermore, we paid special attention to tightly integrate existing software
with native Genode features. Two prominent examples are the seamless
integration of a virtualized Linux desktop and the support for running complete
Genode subsystems as plugin in the Arora web browser. In response to several
requests to complement our regular source-code releases with a new bootable
live CD, we have now published a new version.

You can now test drive the current version of Genode on your PC (or virtual
machine) to get an idea about where the development of the framework is
heading.

[http:/download/live-cds - Download the new live CD]
featuring five setups showcasing our efforts of the past year.


Genode OS Framework release 10.08 | 2010-08-11
##############################################

| With Gallium3D, MadWifi, and a new block-driver infrastructure, the release
| 10.08 takes Genode's device-driver support to the next level.

Wireless networking and hardware-accelerated graphics are commonly regarded as
two of the most sophisticated domains when it comes to device-driver support in
operating systems. We are proud to have taken the challenge to support these
device classes in the Genode OS Framework. The just released version 10.08
comes with support for the Gallium3D software stack alongside the Intel
graphics execution manager, which enables Genode applications to perform
hardware-accelerated 3D graphics on Intel GMA platforms. Our port of the
MadWifi wireless stack pushes the limits of what can be done with our Linux
device-driver environment. Furthermore, we extended our device-driver-related
activities to block devices, resulting in a new block-device interface and an
ATAPI driver accompanied with an ISO 9660 file system. Apart from device
drivers, there are numerous other improvements such as the upgrade to Qt4.6.3
and support for dynamic linking on platforms using ARM EABI.

Please find more in-depth information in the detailed
[http:/documentation/release-notes/10.08 - release notes of version 10.08...].


Genode OS Framework release 10.05 | 2010-05-27
##############################################

| The new version 10.05 adds support for mandatory access-control policies,
| introduces audio playback, and improves the integration of the paravirtualized
| OKLinux kernel with the framework.

With the current release, we focused on functionality to broaden the
application area of the framework. The infrastructure of the framework has
advanced to a point that allows running a steadily growing number of typical
general-purpose applications directly on Genode. This is best illustrated by
the fully functional Arora web browser running as a native Genode process.
Still, there are a large number of usage scenarios that rely on Linux
applications. For this reason, we further improved the integration of the
paravirtualized OKLinux kernel with Genode. The new version adds support for
seamlessly integrating the X Window System running on OKLinux with the native
nitpicker GUI. For Genode developers, there is a new build system, which
significantly improves the build performance on multi-processor systems.

Read on about these and many more improvements detailed in the
[http:/documentation/release-notes/10.05 - release notes of version 10.05...]


Adaptation to Codezero kernel v0.3 | 2010-04-06
###############################################

| The just released version 0.3 of the Codezero kernel adds support for the
| latest ARMv7 CPUs. The Genode OS Framework is now ready to be used with this
| new kernel version.

Since version 10.02, the Genode OS Framework officially supports the version
0.2 of the [http://l4dev.org - Codezero microkernel] developed by
[http://b-labs.com - B-Labs]. The road map of this kernel promised
support for the latest ARM CPU cores. With the just released version 0.3, which
added support for ARMv7 CPU cores, the project lives up to this promise. In
addition to the extended CPU support, the new release adds important
functionality regarding device I/O, which prompted us to adapt Genode to the
new version. The adaptation to Codezero version 0.3 is now available at our
Subversion repository. To facilitate the use of Genode with Codezero, we
created a dedicated [http:/community/wiki/GenodeOnCodezero - Wiki page],
which provides up-to-date documentation about building and using Genode on this
kernel.

Thanks to the Codezero developers for being extremely responsive to our
questions and feature requests!

Learn more about
[http:/community/wiki/GenodeOnCodezero - using Genode with Codezero...]



Genode OS Framework release 10.02 | 2010-02-24
##############################################

| Among a variety of platform-related improvements, the release 10.02 adds
| support for the NOVA and Codezero kernels and introduces a new concept for
| managing real-time priorities.

Succeeding the previous feature-rich release, the Genode project took the
chance to focus on extending the base-platform support of the framework. We are
happy to report that we were able to complement the already broad range of
supported kernels by two new modern microkernels namely NOVA and Codezero, both
first released in 2009. Thereby, Genode provides a unified user-level
infrastructure that runs directly on those kernels as well as on Linux (32 bit
and 64 bit), OKL4v2 (x86 and ARMv4), L4/Fiasco, and L4ka::Pistachio. For
developers creating microkernel-based applications, the framework hides the
intricacies of the respective kernel. But it also strives to make the unique
capabilities of each base platform accessible to the user. For example, with
the new release, we made the real-time scheduling of OKL4 and L4ka::Pistachio
available to Genode applications.

Read on the full story about our experiences with the new kernels and the many
[http:/documentation/release-notes/10.02 - improvements of the release 10.02...]

[http:/download/latest-release - Download the latest release...]


Road map 2010 | 2010-01-04
##########################

| We have updated our road map with the planning of the year 2010.

With the start of the new year, its time to pause for a moment, looking back
the progress we made during 2009, and planning the next steps. The overall
theme of 2009 was the creation of fundamental base functionality to make the
framework usable for practical applications. We are proud when revisiting the
long list of achievements introduced with the four releases of the past year:
Support for the OKL4 and l4ka::Pistachio kernels, Linux device-driver
environment, networking, USB input and storage, dynamic linking, Qt4 including
Webkit, and support for a paravirtualized Linux kernel. With this strong
foundation in place, its time to raise the bar again.

[http:/about/road-map - Please read on about our updated road map for 2010...]


Genode OS Framework release 9.11 | 2009-11-25
#############################################

| With release 9.11 Genode gets Webkit, USB storage, TCP/IP stack, support for
| ARM, OKLinux and more ...

For the project, the current release is a major leap towards the goal of Genode
to become a general-purpose OS platform. The addition of OKLinux - a
paravirtualized Linux kernel - to the distribution makes it possible to run
security-sensitive native Genode applications side by side with unmodified
Linux binaries. This particular version of Linux has no direct hardware access
but rather uses native Genode services as virtual hardware devices. With
respect to available device classes, we extended Genode's support to cover USB
storage and networking drivers. Moreover, the porting of the Light-weight IP
stack and Q4/Webkit now enables developers to create web applications on top of
Genode. Beside the new functionality, Genode's platform scope was broadened by
initial support of the ARM architecture.

Read on about these and all additional changes in more detail in the
[http:/documentation/release-notes/9.11 - release notes for Genode 9.11...].


Genode Live Demonstration 2009-09 | 2009-09-02
##############################################

| The latest release of the ready-to-boot Live CD image is available.

The Live CD features the graphical demonstration of the Genode architecture,
known from the last Live CD. But this time it doesn't run on L4/Fiasco only. It
also can be started on top of the L4 microkernels OKL4 and Pistachio. Moreover,
it features QT4 application support and a para-virtualized Linux version
running on top of Genode. The Live CD runs directly on PC hardware and has been
tested on Qemu/KVM and VirtualBox.

_Edit: We have further improved the performance of the L4/Fiasco and_
_L4ka::Pistachio demos, and refined the presentation of the Qt4 demo._

[http:/download/live-cds - Download the updated Live-CD image...]


Genode OS Framework release 9.08 | 2009-08-19
#############################################

| The release 9.08 advances the portability of the operating-system framework
| to a new level.

We have released the version 9.08 of the Genode OS Framework. The general theme
of this release has been refinement. We are particularly happy for having
resolved long standing concerns about our locking and signalling
implementations. The actual focus of our work during the last three months was
the unification of all supported base platforms resulting in many
generalizations of former platform-specific code. We managed to bring the code
for the Linux version very much in line with the supported L4 platforms,
reducing platform-specific source-code complexity and maintenance costs.
Feature-wise, the most important news are the port of the dynamic linker from
FreeBSD, the added support for thread-local storage, a much improved timer
service, and core extensions for running Linux on the OKL4 version of Genode.

Read on about all the changes in the
[http:/documentation/release-notes/9.08 - release notes for Genode 9.08...]


Document about Genode's native Qt4 port available | 2009-07-06
##############################################################

| The document "Portierung von Qt auf Genode" (german) describes the
| undertaking of making the Qt4 framework natively available on Genode. Among
| many technical insights, it provides an overview about the integration with
| Genode's GUI, and explains how Qt4's low-level interfaces are mapped to
| native Genode functionality.

Qt4 is a popular and versatile C++ framework for developing
platform-independent GUI applications. In addition to GUI-related
functionality, Qt4 covers a comprehensive library of data structures and
platform abstractions. It is widely used for both commercial and open-source
applications, most prominently, it serves as the foundation of the KDE project.

Since the release 9.05, the official distribution of Genode supports Qt4 as a
regular feature. The document "Portierung von Qt auf Genode" _(german)_
describes the challenging endeavor of porting this high-complexity C++
framework to Genode. Major problems to overcome had been the missing C libary
(at the time when the project started), the integration of the Qt4 project
files with Genode's build system, the adaption of Qt4 to the basic primitives
provided by Genode, and the integration of Qt4 with Genode's GUI. In addition
to the mentioned technical insights, the document evaluates the achieved
solution with respect to compatibility and maintainability.

[http://www.genode-labs.com/publications/qt4-on-genode-de-2009.pdf - Download the PDF...]


Genode OS Framework release 9.05 | 2009-05-27
#############################################

| With the release 9.05, we introduce the first fragments of USB support,
| update Qt to version 4.5.1, and add the OKL4 kernel as supported base
| platform.

The new release continues the general theme to enhance our potential user base
by broadening the base-platform support and, at the same time, extending the
functionality of the framework. We have now added the OKL4 kernel to the
supported base platforms. OKL4 is a commercial-grade kernel developed by
[http://www.ok-labs.com - Open Kernel Labs] and primarily targeted at embedded
systems. Along with this integration work, we were able to further advance the
portability of Genode by generalizing much of former platform-dependent code.
On the feature side, we introduced the first parts of a USB stack, making
Linux' USB host-controller drivers and a human-interface device driver
available on Genode. As outlined in the release notes, there is also good
progress on executing Linux as a sub system of Genode. Furthermore, we have now
seamlessly integrated the support for the Qt application framework into the
Genode source tree and bumped the version to 4.5.1.

Read on about the new features described int the
[http:/documentation/release-notes/9.05 - release notes...]

[http:/download/latest-release - Download the release 9.05...]

[http:/about/road-map - See our updated road map...]


Bringing Genode to the OKL4 kernel | 2009-05-06
###############################################

| We have enhanced the range of supported kernel platforms by bringing Genode
| to the OKL4 kernel developed by Open Kernel Labs.

With the port of Genode to the OKL4 kernel, we have taken another step to reach
a broader user base of the framework.&nbsp; In contrast to the already
supported microkernels L4ka::Pistachio and L4/Fiasco, the OKL4 kernel developed
by [http://ok-labs.com - Open Kernel Labs] is largely deployed in commercial
settings. Even though being a member of the L4 family of kernels, OKL4 has a
much modernized kernel API that fits quite well with the Genode architecture.
For example, OKL4 does not rely on an in-kernel mapping database, frees the IPC
operation from wall-clock timeouts, supports asynchronous notifications, and
provides kernel support for user-level synchronization.

In the process of porting Genode to OKL4 version 2.1, we took the chance of
generalizing a lot of former L4-specific code such that the remaining
platform-specific code is now in the order of less than 2,000 lines of code for
each kernel platform. To ease future ports of the frameworks to other kernels,
we have documented our work in detail. If you are interested in learning more
about the OKL4 kernel from our perspective, or if you like to dive right into
the inner parts of the Genode OS Framework, read on about
[http:/documentation/articles/genode-on-okl4 - Bringing the Genode OS Framework to the OKL4 kernel...]

The OKL4 version is available at our subversion repository and will be included
in the upcoming release 9.05. For further information about building and using
Genode on OKL4, please refer to the new
[http:/community/wiki/GenodeOnOKL4 - Genode on OKL4 Wiki page...]


Genode on 64-bit Linux kernels | 2009-04-17
###########################################

| Genode can now use both 32-bit as well as 64-bit versions of the Linux kernel
| as base platform.

From the ground up, Genode was co-developed supporting Linux and L4 as base
platforms but the both versions were restricted to the 32-bit x86 architecture.
We have now expanded the Linux support to 64 bit. Because most of the adaptions
of Genode to 64 bit took place in generic code, we are now well prepared to
support future 64-bit versions of L4 kernels as well. The patch for adding 64
bit support supplied by Christian Prochaska is now included in the current
version of the Genode subversion repository.

[http:/download/subversion-repository - Access the Genode subversion repository...]


Christian Prochaska joins our project as regular developer | 2009-04-08
#######################################################################

| The developer of the Qt4 port for Genode joins Genode Labs to bring forward
| his Genode-related projects.

As the original developer of the Qt4 port for Genode, Christian Proachaska has
gained long-time experience with running complex software on top of Genode. In
the future, he will leverage his skills to further advance his Qt4-related
work. Furthermore, he strives to improve the framework towards general-purpose
computing. Currently, he is working on adding 64-bit support to Genode.


Genode OS Framework release 9.02 | 2009-02-26
#############################################

| The version 9.02 of the Genode OS Framework introduces support for
| L4ka::Pistachio as base platform, a port of the Qt4 application framework,
| and networking.

Whereas the focus of the previous release 8.11 was the refinement of Genode's
base API and the creation of the infrastructure needed to build real-world
applications, the new release 9.02 is focused on functional enhancements in two
directions. The first direction is broadening the number of possible base
platforms for the framework. At present, most microkernels bring along a custom
user land, which is closely tied to the particular kernel. Our vision is to
establish Genode as a common ground for developing applications, protocol
stacks, and device drivers in such a way that the software becomes easily
portable among different kernels. This release makes Genode available on the
L4ka::Pistachio kernel. Hence, software developed with the Genode API can now
run unmodified on Linux/x86, L4/Fiasco, and L4ka::Pistachio. In the second
direction, we are steadily advancing the functionality available on top of
Genode. With this release, we introduce a basic networking facility and support
for native Qt4 applications as major new features. Thanks to Genode's
portability, these features become automatically available on all supported
base platforms.

Read on about the new features described in the
[http:/documentation/release-notes/9.02 - release notes...]

[http:/download/latest-release - Download the Genode release 9.02...]


Port of libSDL to Genode | 2009-01-23
#####################################

| As announced on the Genode mailing list, the popular Simple Directmedia
| Library is being ported to Genode. A first version of the port and a demo
| application are already available.

The [http://www.libsdl.org - Simple Directmedia Layer library] (libSDL) is a
very popular cross-platform media library that provides hardware abstractions
for graphics, input devices, and sound. It is often used as back end for games,
emulators, and media players. Also the Linux version of Genode relies on the
hardware abstractions provided by libSDL.

As [http:/community/viewml?msg_name=4978DC53.3090409%40torfbruecke.net&amp;forum_name=genode-main - announced on the Genode mailing list],
libSDL has been ported to Genode. At the current stage, the port supports
the video subsystem and the input handling for mouse and keyboard. With
libSDL now becoming available for Genode, it becomes much easier to make the
wealth of libSDL-based applications available on our platform.

[http:/community/viewml?msg_name=4978DC53.3090409%40torfbruecke.net&amp;forum_name=genode-main - Read the announcement...]


Genode on the L4ka::Pistachio kernel | 2008-12-18
#################################################

| The new L4ka::Pistachio version of the Genode OS Framework makes the unique
| features, performance, and stability of the L4::Pistachio kernel available
| for Genode's software stack.

L4ka::Pistachio is the reference implementation of the L4 API version x.2 (also
referred to as version 4). With the port of Genode to L4ka::Pistachio conducted
by Julian Stecklina, this kernel has become available as a base platform for
Genode. The choice of leveraging the special characteristics of
L4ka::Pistachio, the Linux kernel, or L4/Fiasco has become just a matter of
recompilation. This way, software written against the Genode API can benefit
from the long-year research and development invested into L4ka::Pistachio by
the L4ka group at the University of Karlsruhe and the DiSy group at the
University of New South Wales. We have made the L4ka::Pistachio version of
Genode available at our public subversion repository. It will become a regular
part of Genode with the upcoming release as scheduled for February. The
instructions for building and using Genode with the L4ka::Pistachio kernel are
provided at our Genode-on-L4ka::Pistachio wiki page.

[http:/community/wiki/GenodeOnL4kaPistachio">Learn more about Genode on L4ka::Pistachio...]


Public bug tracker available | 2008-12-12
#########################################

| Because we received several requests for a public bug tracker, we have now
| enabled the public tracker of our Sourceforge project.

With the new bug tracker, we want to simplify the sharing and solving of issues
related to Genode in a coordinated fashion. If you discover things you like to
see improved in our code or documentation, please do not hesitate to share your
experiences and ideas by posting a bug. [http:/community - Community resources...]


Genode OS Framework release 8.11 | 2008-11-21
#############################################

| We are pleased to announce the release 8.11 of the Genode OS Framework
| introducing a new device-driver API, a C runtime, support for asynchronous
| notifications, and many improvements of the base API.

With the new release 8.11, we are aiming at enabling Genode for real-world
applications that require custom device drivers and the reuse of existing
code.&nbsp; Among the major improvements are a new device driver API that eases
the reuse of existing device drivers and a C runtime that facilitates the reuse
of a wealth of existing C library code on Genode. Furthermore, we extended the
base API by a number of exciting feature such as support for asynchronous
notifications, capability typification, and managed dataspaces.

Learn more about all the new features and changes described in our comprehensive
[http:/documentation/release-notes/release_notes-08-11 - release notes...]

[http:/download/latest-release - Download the release 8.11 of the Genode OS Framework...]


Ready-to-boot Live-CD image available | 2008-10-21
##################################################

| As a teaser for the upcoming release 8.11, we have compiled a Live-CD image
| showing off the current state of the Genode OS Framework.

The Live CD features a fully graphical demonstration that presents the
fundamental concepts of the Genode architecture in an interactive fashion. It
runs directly on PC hardware and has been tested on Qemu and VirtualBox.
[http:/download/live-cds - Download the Live-CD image...]


New and exciting challenges ahead | 2008-09-19
##############################################

| To foster the involvement of developers interested in working on Genode, we
| have enhanced the compilation of future challenges in our Wiki by a number of
| interesting Genode-related projects to pursue.

The Genode architecture inspires a large number of topics for research,
experimentation, and development. The
[http:/community/wiki/Challenges - challenges section of our Wiki] compiles a
number of existing ideas. We have now enhanced this compilation by a number of
further avenues that we find interesting to explore. For example, exploring
Linux process containers, running Genode on FPGA platforms, dynamic linking
support, de-privileging VESA, optimizing locking performance, and the port of
libSDL. Maybe some of you find these topics as thrilling as we do? If yes,
please feel welcome to pick up the ideas to start experimenting with Genode.


The Genode build system thoroughly examined | 2008-08-22
########################################################

| In his paper "Empirical Comparison of SCons and GNU Make", Ludwig Hähne
| pursues the question of which build system to choose for an operating-system
| project such as ours. For his study, he took the Genode build system as a
| real-world use case. His results are not only valuable for our particular
| project but for everyone with an interest in build systems.

For the Genode OS Framework, we consider flexibility, usability, reliability,
and scalability of the build infrastructure is crucial. When we started
project, we created a custom build infrastructure with a particular focus on
developer convenience. The effort already paid off for our daily work. The
current implementation relies on GNU Make as back end but we are aware that
there exist more modern approaches for building software, in particular there
is SCons. In his paper, Ludwig Hähne used the Genode build system as a use case
to compare SCons and GNU Make. He replicated our build system for the use of
SCons as back end and conducted comprehensive experiments. The empirical
results presented in the paper reveal a number of interesting issues, for
example the limited scalability of the current Genode build system with regard
to parallelism, and the memory consumption of SCons when used for large
projects.
[http://www.genode-labs.com/publications/scons-vs-make-2008.pdf - Download the PDF document...]


Genode ported to Syllable Server OS | 2008-08-22
################################################

| The developers of the Syllable OS project have ported Genode to the
| Linux-based server version of Syllable OS.

Syllable is a fully fledged free-software operating system that is mainly
targeted at desktop computers. Thanks to its long-year steady development,
there exists a large base of custom applications. As announced on the
[http://development.syllable.org/pages/index.html - website of the Syllable OS project],
Genode has been ported to the server version of Syllable OS. Kaj de Vos of the
Syllable project also considers the incorporation of Genode into the desktop
version of Syllable, which would be a very interesting synergy.


Genode OS Framework release 8.08 | 2008-08-06
#############################################

| We released the first official version of the Genode OS Framework.

The initial version of the Genode OS Framework is available for download. For
naming our releases, we use the Ubuntu version-number scheme, which takes the
year as the major number and the month as minor number. Hence, the release is
called 8.08. It contains everything needed to execute an interactive graphical
demonstration scenario on Linux via libSDL or alternatively via L4/Fiasco on
bare PC hardware.
[http:/download/latest-release - Download the latest release...]


Project website launched | 2008-07-29
#####################################

| The launch of our comprehensive project website genode.org marks the begin of
| our effort to turn Genode into a community project. The initial release of the
| Genode OS framework is scheduled for the 6th of August.

Today, we proudly launched the website of the Genode project
[http://www.genode.org - http://www.genode.org]. This website is the central
resource for people using or developing the Genode OS framework. It covers
the latest news about our progress, architectural and technical documentation,
a community-maintained wiki, mailing lists, information on accessing the
source-code, and much more. We sincerely hope that this website will draw the
attention of people who want bring forward the project together with us.

We have scheduled the first official release of the Genode OS framework for the
6th August. Until then, we invite you to test-drive the beta-version of the
framework as provided at the [http://www.genode.org/download - download].


Genode Labs founded | 2008-07-17
################################

| The original authors of the Genode OS Framework start a company dedicated to
| promoting and advancing Genode.

At 15th of May, the two former PhD students of the TU Dresden Operating Systems
group who developed the original vision behind the Genode architecture and who
created the present implementation of the Genode OS Framework started their
company Genode Labs. Genode Labs is committed to bring forward their novel OS
technology as a community project and to facilitate its application to
real-world problems.