Latest LQ Deal: Linux Power User Bundle
Go Back > Forums > Linux Forums > Linux - Newbie
User Name
Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question? If it is not in the man pages or the how-to's this is the place!


  Search this Thread
Old 03-19-2010, 01:00 PM   #1
LQ Newbie
Registered: Sep 2004
Location: Fort Myers, FL, USA
Distribution: Fedora Core 4
Posts: 22

Rep: Reputation: 15
This kernel requires the following features not present on the CPU: fpu

I am working on a group project. We are trying to load Linux onto an eBox 2300-MSJK. This is the website I have found:

DM&P make the Vortex86 system-on-chip that is in the eBox we have.

This is the manual from the above link, from the section "Download and Installation > DM&P X-Linux R5.6 Developer's Manual: xlinux-manual-r563.pdf (263 KB)"

I have followed the instructions from this manual, on page 5, under "Boot From DOS".

I used the 'makebootfat' utility. I have an autoexec.bat file with one line:

@loadlin linux initrd=ramdisk.gz ramdisk_size=32768 root=/dev/ram0 rw

(The manual incorrectly specifies 'loadin' instead of 'loadlin' for the above line)

We are using the Linux distribution "Download and Installation > X-Linux 5.6 for Vortex86DX > Running from DOS: xlr563-dx-ramdisk.tar.gz (8.33 MB)" from the first link posted above.

The flash memory onboard our eBox is 512MB (488MB actual).

On booting, the FreeDOS loads, followed by LoadLin.

The screen shows "LOADING.....",


"Now reading INITRD:",


"LOADING......(screen full of .'s)",


"This kernel requires the following features not present on the CPU: fpu"

followed by

"Unable to boot - please use a kernel appropriate for your CPU"

This thread kind of mentions my problem:

...but there are no solutions listed. 8 hours to compile a kernel? Really? Yikes.

I was wondering if anybody had any ideas? I've done a bit of research, and everything I can find tells me I have to (re)compile the kernel?

Thanks in advance.
Old 03-19-2010, 01:33 PM   #2
Registered: Jan 2005
Location: Midwest USA, Central Illinois
Distribution: SlackwareŽ
Posts: 12,818
Blog Entries: 27

Rep: Reputation: 2113Reputation: 2113Reputation: 2113Reputation: 2113Reputation: 2113Reputation: 2113Reputation: 2113Reputation: 2113Reputation: 2113Reputation: 2113Reputation: 2113

Look at 'LinuxRT eBox distribution' to see if that works for you.

BTW, you can build on any computer then move to your embed. It's done all the time, no need to do a compile on such a slow embed. Do a search here on LQ as I know that it's been covered.

You can also look at similar threads at the bottom of this thread.

Just a few links to aid you to gaining some understanding;

Linux Documentation Project
Rute Tutorial & Exposition
Linux Command Guide
Utimate Linux Newbie Guide
Getting Started with Linux
Advanced Bash-Scripting Guide
Linux Home Networking

The above links and others can be found at 'Slackware-Links'. More than just SlackwareŽ links!
Old 03-19-2010, 01:35 PM   #3
LQ Guru
Registered: Jan 2006
Location: Ireland
Distribution: Slackware & Android
Posts: 8,260

Rep: Reputation: 827Reputation: 827Reputation: 827Reputation: 827Reputation: 827Reputation: 827Reputation: 827
You need floating point processor emulation - the maths co processor. Either that, or the kernel thinks you do when you don't.

I don't know your processor. I think if you select i486, you can have floating point emulation. i586 and above didn't have co-processors, iirc

You can stop reading - you definitely need a rebuild, but you can cross compile if you are resource challenged.
Old 03-19-2010, 01:37 PM   #4
Registered: Dec 2005
Location: Oregon
Distribution: Debian Testing
Posts: 488

Rep: Reputation: 38
I know nothing about ebox or xlinux, but here's an old thread from DSL forum about this hardware.

I'd look at Damn Small Linux and/or Puppy Linux for something like this.


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
True Image boot problem: cmov feature not present on CPU deadkenny Linux - Kernel 3 09-05-2009 08:31 AM
Are KVM guest able to use CPU features ? PlatinumX Linux - Hardware 1 01-03-2009 09:30 AM
Gentoo - Kernel requires features not present on CPU - IBM Thinkpad 380XD Java_Code Linux - Distributions 3 02-11-2008 03:36 AM
Recommended High-Performance Workstation CPU (AMD - Intel) Present-2006 kuphryn Linux - Hardware 19 08-31-2006 11:24 AM
Adobe Acrobate Reader Requires A Plugin-That Requires Open LDAP That Requires Berkely Old_Fogie Slackware 10 05-08-2006 05:04 AM > Forums > Linux Forums > Linux - Newbie

All times are GMT -5. The time now is 07:12 PM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration