kernel image size

[John Allen]

      I need to get the kernel that I am building for my Geode sc1200 
(including the linuxbios code) small enough to fit on a 256K eeprom.  Is 
this possible?  My first attempt resulted in vmlinux of  626K.  After 
compiling linuxBIOS it gave my a rominage of  448K.  Am I missing 
something?  I tried to strip as much out of the kernel as possible.  
John

[Ronald G. Minnich]

      On Thu, 7 Nov 2002, John Allen wrote:

  I need to get the kernel that I am building for my
Geode sc1200 
 (including the linuxbios code) small enough to fit on a 256K eeprom.  Is 
 this possible?  My first attempt resulted in vmlinux of  626K.  After 
 compiling linuxBIOS it gave my a rominage of  448K.  Am I missing 
 something?  I tried to strip as much out of the kernel as possible.  
 John

you are SOL. Linux has not been that small for years. You could try to 
compile an older kernel, but we have had zero luck with 256KB.


oh yeah, don't compile older kernels on newer linux. I've tried that and 
it fails. re-install red hat 1.0


ron

[Tyson D Sawyer]

      I'm not sure that uC-Linux can't get that small.  You loose some 
features bu it might be worth checking.

http://www.uclinux.org/

I don't know the details or how current this info is but from the "What 
is page":

* Common Linux API
* uCkernel < 512 kb
* uCkernel + tools < 900 kb

I don't know what is included in that 512K or if it is a compress image 
or not.  However, I've heard its smaller.  ...slim chance but worth 
looking into.

Ty

Ronald G. Minnich wrote:
  On Thu, 7 Nov 2002, John Allen wrote:
 
 
 I need to get the kernel that I am building for my
Geode sc1200 
(including the linuxbios code) small enough to fit on a 256K eeprom.  Is 
this possible?  My first attempt resulted in vmlinux of  626K.  After 
compiling linuxBIOS it gave my a rominage of  448K.  Am I missing 
something?  I tried to strip as much out of the kernel as possible.  
John
 
 
 
 you are SOL. Linux has not been that small for years. You could try to 
 compile an older kernel, but we have had zero luck with 256KB.
 
 
 oh yeah, don't compile older kernels on newer linux. I've tried that and 
 it fails. re-install red hat 1.0
 
 
 ron
 
 _______________________________________________
 Linuxbios mailing list
 Linuxbios(a)clustermatic.org
 http://www.clustermatic.org/mailman/listinfo/linuxbios

-- 
Tyson D Sawyer                             iRobot Corporation
Senior Systems Engineer                    Military Systems Division
tsawyer(a)irobot.com                         Robots for the Real World
603-654-3400 ext 206                       http://www.irobot.com

[Karthik Bala Guru]

      Oh yuh,
I was into reducing linux kernel to around 256 kb ...
it was a futile attempt some 3 months back... !!
But i suppose that it will be acheivable with a
vast band of assembly programmers with tonnes of
time in hand !!!

yes, compiling older kernels on the newer ones
was never a success story in my experience !!

Try out asmutils ... It will give u enough idea.
It is much similar to tomsrtbt but gives 
clear idea to reduce linux kernel size !!

The smallest linux kernel in world is that of 
coventive technologies according to many newsgroups.

The smallest size achieved by me with MINIRTL ...
a tiny RTLINUX is that of around 450KB with many
supports removed !!

karthik bala guru





 --- Tyson D Sawyer <tyson(a)irobot.com&gt; wrote: > I'm
not sure that uC-Linux can't get that small. 
  You loose some 
 features bu it might be worth checking.
 
 http://www.uclinux.org/
 
 I don't know the details or how current this info is
 but from the "What 
 is page":
 
 * Common Linux API
 * uCkernel < 512 kb
 * uCkernel + tools < 900 kb
 
 I don't know what is included in that 512K or if it
 is a compress image 
 or not.  However, I've heard its smaller.  ...slim
 chance but worth 
 looking into.
 
 Ty
 
 Ronald G. Minnich wrote:
  On Thu, 7 Nov 2002, John Allen wrote:
 
 
>I need to get the kernel that I am building for my
 Geode sc1200 
 >(including the linuxbios code) small enough to
fit
 on a 256K eeprom.  Is 
 >this possible?  My first attempt resulted in
 vmlinux of  626K.  After 
 >compiling linuxBIOS it gave my a rominage of 
 448K.  Am I missing 
 >something?  I tried to strip as much out of
the
 kernel as possible.  
 John
 
 
 
 you are SOL. Linux has not been that small for
 years. You could try to 
  compile an older kernel, but we have had zero
luck
 with 256KB.
  
 
 oh yeah, don't compile older kernels on newer
 linux. I've tried that and 
  it fails. re-install red hat 1.0
 
 
 ron
 
 _______________________________________________
 Linuxbios mailing list
 Linuxbios(a)clustermatic.org
http://www.clustermatic.org/mailman/listinfo/linuxbios
  
 
 -- 
 Tyson D Sawyer                             iRobot
 Corporation
 Senior Systems Engineer                    Military
 Systems Division
 tsawyer(a)irobot.com                         Robots
 for the Real World
 603-654-3400 ext 206                      
 http://www.irobot.com
 
 _______________________________________________
 Linuxbios mailing list
 Linuxbios(a)clustermatic.org
http://www.clustermatic.org/mailman/listinfo/linuxbios 

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      John Allen <jallen(a)integraltech.com&gt; writes:

  I need to get the kernel that I am building for my
Geode sc1200 (including the
 linuxbios code) small enough to fit on a 256K eeprom.  Is this possible?  My
 first attempt resulted in vmlinux of  626K.  After compiling linuxBIOS it gave
 my a rominage of  448K.  Am I missing something?
Only that we usually use etherboot as a bootloader in a situation
like this, and so we avoid the problem of shrinking the kernel
down to an unreasonable level.

Eric