On 6 Apr, Eric W. Biederman wrote:
> In the hope of being able to fit 2.4.x and linuxbios into a 256KB rom
> I have been playing around with a number things. Adding config
> options to compile so of code out of the kernel is one of them.
>
> Currently I have built a 226KB patched 2.4.2 kernel with a network
> device driver, and initrd support. This isn't yet a useable size but
> it is close.
>
> Using UPX seems to give a pretty steady 24KB reduction in kernel
> size, which makes the whole process easier. The current gzip
> decompressor is only 8KB so it can't simply be that UPX needs a
> smaller decompressor.
>
> If I add in tcp/ip support the image size goes up to 301KB.
>
> With no network support and just generic IDE support I get a 228KB
> image.
>
> I have a number of things I would like to cut out to see if I can
> reduce the size to something livable:
> - Swapping support
> - Support for processors other than the one you compiled for.
>
> So there is some hope of getting linux down to a useable size, for
> working on a 256KB ROM. In my preliminary tests I figure is about
> 192KB so there is some slack for linuxBIOS and a very minimal initrd.
>
> Eric
I have been using nfsroot instead of an initrd for some applications. It
allows for an arbitrarily large root filesystem under circumstances
where an nfs server is available.
Ty
--
Tyson D Sawyer iRobot Corporation
Senior Systems Engineer Real World Interface Div.
[EMAIL PROTECTED] Robots for the Real World
603-532-6900 ext 206 http://www.irobot.com
