"Jeremy Jackson" <[EMAIL PROTECTED]> writes:
> Warning: this post does not contain the working code requested :)
>
> ...but working on the 2.5.6 ide subsystem,
> I notice that just ide.o is ~48k... almost as big as linuxBIOS itsself.
> drivers/ide/*.o is like 512k. I'll try using the "old" hd.c driver...
> perhaps it's smaller
We have much smaller code in LinuxBIOS already.
> In trying to strip down the Linux kernel, has it been tried to configure it
> without even some of the stuff we take for granted?
It comes to right about 256K compressed with nothing compiled in.
Try it.
That makes it useless for fitting in a ROM.
> Like unix domain
> sockets, or maybe even networking? (for disk boot only)
> I mean, actually do some development, making some extra config options
> to turn stuff off... remove elevator code...
>
> I'm guessing nobody has gone far enough to say for sure it's impossible,
> right?
Not far enough to say it's impossible. But far enough to say it
probably isn't worth while.
> I would start by configuring a minimal kernel, compiling, and breaking down
> by elf section name and directory... let me see...
>
> make mrproper ; make dep; make bzImage
> for i in {.text, .data, .bss, __ex_table, .rodata, .data.init, .setup.init }
> ; do
> find linux -name *.o -exec objdump -h {} | grep $i | cut ....
Try it. I think it might be possible to get the core down smaller but
that is currently an insane amount of work. I'd like to see it, but...
For me it is more productive to enhance etherboot.
Eric
