Debian ARM accelerates via EABI port

Click here to learn
about this Sponsor:

Home | News | Articles | Polls | Forum

Keywords: Match:

Jan. 19, 2007

Embedded system specialist Applied Data Systems (ADS) has contributed an experimental new root filesystem for the ARM architecture to the Debian project. Comprised of 9,877 packages and growing, the ADS-contributed filesystem offers greatly improved floating point performance, thanks to support for ARM's EABI (embedded application binary interface).

ARM announced its EABI nearly four years ago, with the release of version 2.0 of its RealView compiler collection. Described as a "cross-platform standard developed by ARM, in collaboration with major OS and tools vendors," the EABI provides a standard way for programs and libraries to interact with processor hardware -- including ARM's VFP (vector floating point) coprocessor and Cirrus's Maverick Crunch floating point unit (FPU).

Current Debian GNU/Linux releases for ARM use floating point instructions that are emulated in software, which carries a performance penalty, notes ADS.

The GNU Compiler Collection subsequently gained usable EABI support as of release 4.1.0 (although Maverick Crunch support still needs work), while the Linux kernel added an EABI build option with the 2.6.16 release, according to Debian's ARM EABI port page.

The Debian project had worked for some time, prior to ADS's contribution, to build up a viable ARM EABI port. However, these efforts had been "taking a while," wrote developer Lennert Buytenhek, when he announced his port to the Debian community on Jan. 10th. Buytenhek wrote:

"More and more VFP-supporting CPUs are coming out lately, and it would be nice to be able to use VFP on them in a sane way. The existing Debian EABI efforts have been taking a while, so November 24 last year I started working on a from-scratch EABI port, sponsored by Applied Data Systems. Six and a half weeks later, there's about 6,000 debs built, and so far it all seems to work pretty well."

Buytenhek at first said ADS would keep its ARM EABI filesystem for internal use and for customers. However, several days later, Buytenhek wrote:

"As it doesn't really make a lot of sense anymore to keep the port private at this point, ADS decided that it should be opened up to the public. Yay."

Within a couple of days, the package count in Buytenhek's ARM EABI filesystem had grown to 9,877. He reported that he was compiling the applications natively, on top of Koen Kooi's OpenEmbedded-based pure EABI filesystem, running on three donated Thecus N2100 storage devices (pictured at right), based on Intel 80219 processors. Buytenhek also made use of a donated Intel IQ81342EX, a development board for Intel's IOP341 and IOP342 storage processors.

Debian's ARM EABI port is known as "armel," and is not to be confused with the "armeb" big endian port. According to an informal report submitted to a Debian developer list by Martin Guy, the ADS-contributed EABI-enabled armel filesystem running on a 233MHz ARM processor with no floating point unit took 4 minutes 17 seconds to encode an mp3 file, using lame. The old Debian ARM distribution, meanwhile, took 68 minutes to encode the same file, on a 200MHz ARM processor with floating point hardware that the distribution could not exploit.

Lots of technical information about EABI, its advantages, and why it essentially represents a new architecture, can be found on the Debian Project's ARM EABI port page.

One of the first free software projects to gain EABI support was Nokia's Debian-based Maemo project, which added EABI support to its Mistral SDK last June. Mistral was then used to develop the Tablet OS 2006 update Nokia's 770 Internet Tablet.

Availability

ADS's EABI-enabled ARM Linux port is available as a 117MB "build-essential root filesystem," here.

Additionally, Buytenhek reports having completed a port of Fedora Core 6 to the ARM EABI architecture.

ADS, a long-time specialist in ARM processors, in 2001 contributed sleep mode functionality to Linux's power management support for the Intel StrongARM processor.

Related Stories:

(Click here for further information)

7 Advantages of D2D Backup
For decades, tape has been the backup medium of choice. But, now, disk-to-disk (D2D) backup is gaining in favor. Learn why you should make the move in this whitepaper.

4 Legal Reasons to Control Internet Access
The Internet is obviously a valuable resource for many organizations. However, many are exposed to legal liability concerns because they fail to control Internet access. Learn if you're safe in this white paper.

Rapidly Resolve J2EE Application Problems
Whether you are in the process of building J2EE applications or have J2EE applications already running in production, you must ensure that they deliver the expected ROI. Learn how in this white paper.

Load Testing 2.0 for Web 2.0
There are many unknowns in stress testing Web 2.0 applications. Find out how to test the performance of Web 2.0 in this white paper.

Build Better Games Online
For the game infrastructure providers, life is complex. Making money from games has become more complicated. Why? Find out in this white paper.

Building a Virtual Infrastructure from Servers to Storage
This white paper discusses the virtual storage solutions that reduce cost, increase storage utilization, and address the challenges of backing up and restoring Server environments.

Gaining Faster Wireless Connections with WiMAX
Welcome to what is quickly becoming the hyperconnected world where anything that would benefit from being connected to the network will be connected. Learn more in this white paper.

Is Your Desktop a Security Threat?
The new wave of sophisticated crimeware not only targets specific companies, but also targets desktops and laptops as backdoor entryways into those business’ operations and resources. Learn how to stay safe in this white paper.

Increasing SAN Reliability by 100 Percent
Storage area networks (SAN) are a strong part of storage plans. Learn how to increase your reliability and uptime by 100 percent in this case study.

Got a HOT tip? please tell us!

Click here for a profile of each sponsor:

PLATINUM SPONSORS
<a href="http://ad.doubleclick.net/jump/entzd.linuxdevices/desktop;kw=timesys;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?"" style="border-width:0px;height:150px;width:30px;"><img src="http://ad.doubleclick.net/ad/entzd.linuxdevices/desktop;kw=timesys;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?" style="border:0; height: 150; width:30;" /></a>		<a href="http://ad.doubleclick.net/jump/entzd.linuxdevices/desktop;kw=windriver;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?"" style="border-width:0px;height:150px;width:30px;"><img src="http://ad.doubleclick.net/ad/entzd.linuxdevices/desktop;kw=windriver;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?" style="border:0; height: 150; width:30;" /></a>

<a href="http://ad.doubleclick.net/jump/entzd.linuxdevices/desktop;kw=versalogic;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?"" style="border-width:0px;height:150px;width:30px;"><img src="http://ad.doubleclick.net/ad/entzd.linuxdevices/desktop;kw=versalogic;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?" style="border:0; height: 150; width:30;" /></a>		<a href="http://ad.doubleclick.net/jump/entzd.linuxdevices/desktop;kw=winsystems;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?"" style="border-width:0px;height:150px;width:30px;"><img src="http://ad.doubleclick.net/ad/entzd.linuxdevices/desktop;kw=winsystems;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?" style="border:0; height: 150; width:30;" /></a>

<a href="http://ad.doubleclick.net/jump/entzd.linuxdevices/desktop;kw=virtuallogix;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?"" style="border-width:0px;height:150px;width:30px;"><img src="http://ad.doubleclick.net/ad/entzd.linuxdevices/desktop;kw=virtuallogix;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?" style="border:0; height: 150; width:30;" /></a>		<a href="http://ad.doubleclick.net/jump/entzd.linuxdevices/desktop;kw=trolltech;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?"" style="border-width:0px;height:150px;width:30px;"><img src="http://ad.doubleclick.net/ad/entzd.linuxdevices/desktop;kw=trolltech;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?" style="border:0; height: 150; width:30;" /></a>

<a href="http://ad.doubleclick.net/jump/entzd.linuxdevices/desktop;kw=montavista;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?"" style="border-width:0px;height:150px;width:30px;"><img src="http://ad.doubleclick.net/ad/entzd.linuxdevices/desktop;kw=montavista;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?" style="border:0; height: 150; width:30;" /></a>		<a href="http://ad.doubleclick.net/jump/entzd.linuxdevices/desktop;kw=calaosystems;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?"" style="border-width:0px;height:150px;width:30px;"><img src="http://ad.doubleclick.net/ad/entzd.linuxdevices/desktop;kw=calaosystems;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?" style="border:0; height: 150; width:30;" /></a>

<a href="http://ad.doubleclick.net/jump/entzd.linuxdevices/desktop;kw=technologicsystems;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?"" style="border-width:0px;height:150px;width:30px;"><img src="http://ad.doubleclick.net/ad/entzd.linuxdevices/desktop;kw=technologicsystems;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?" style="border:0; height: 150; width:30;" /></a>		<a href="http://ad.doubleclick.net/jump/entzd.linuxdevices/desktop;kw=technicalsolutions;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?"" style="border-width:0px;height:150px;width:30px;"><img src="http://ad.doubleclick.net/ad/entzd.linuxdevices/desktop;kw=technicalsolutions;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?" style="border:0; height: 150; width:30;" /></a>

GOLD SPONSORS
<a href="http://ad.doubleclick.net/jump/entzd.linuxdevices/desktop;kw=ultimate;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?"" style="border-width:0px;height:150px;width:30px;"><img src="http://ad.doubleclick.net/ad/entzd.linuxdevices/desktop;kw=ultimate;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?" style="border:0; height: 150; width:30;" /></a>		(Become a sponsor)

ADVERTISEMENT
(Advertise here)

Check out the latest Linux powered...

mobile phones!

other cool
gadgets

HOWTOs: from DevShed & IBM DeveloperWorks:

BREAKING NEWS

• Open source awards open for nominations
• Atom-based ECX board runs Linux
• Tiny boards gain Linux cross-tools support
• Cross-platform tools vendor announces awards, earnings
• Little thin client runs Linux
• $7 Soc runs Linux
• Linux wins big in financial trading
• Linux-based remote access equipment adds monitoring
• Dual-core ARM SoC clocks to 1.2GHz
• Verizon Wireless, seven others join Linux phone org
• Android Developer Challenge announces first-round winners
• Low-end RAID controllers support Linux
• Wind River joins open source high-availability group
• Thin clients bulk up on software
• Embedded Linux Conference videos available

Linux-Watch headlines:
• Verizon chooses Linux "platform of choice"
• Hats off to Fedora 9
• Running a small business on desktop Linux
• Sun launches OpenSolaris
• Via tiptoes toward openness
• Linux certification comes to Italy
• Installing Ubuntu Hardy Heron as a web hosting server
• Black Duck Buys Koders
• Open source conference co-locates with Ubuntu show
• Ubuntu 8.04 ready to challenge Windows

Also visit our sister site:

Sign up for LinuxDevices.com's...

news feed

Use of this site is governed by our Terms of Service and Privacy Policy. Except where otherwise specified, the contents of this site are copyright © 1999-2008 Ziff Davis Enterprise Holdings Inc. All Rights Reserved. Reproduction in whole or in part in any form or medium without express written permission of Ziff Davis Enterprise is prohibited. Linux is a registered trademark of Linus Torvalds. All other marks are the property of their respective owners.