kernel boot up without using PPCBOOT from flash

Thanks ,

I was able to solve the staic/shared library problem
by just stripping out the libraries and including them
in the ramdisk .

Now i need to go ahead with booting the kernel without
using PPCBOOT as soon as the power is on.
I dont know from where to start and which files i need
to modify ..
So please help me to go ahead with your suggestions
how to boot kernel from flash ?

Thankyou!

--- Wolfgang Denk <wd@denx.de> wrote:

In message

[ref]

you wrote:

quoted

I am trying to execute certain fileutils

application

quoted

like cp ,ls ..
These applications are compiled using the Glibc

2.2.3

quoted

The problem is if i compile the applications
Statically
and try to execute the command cp,ls ..i get the
segmentation fault error.Please let me know the

proper

quoted

compiler options  for static linking.

Please explain which toolchain you are yusing, which
 libraries,  and
which versions of the tools listed above.

quoted

OBJS = cat.o chgrp.o chmod.o chown.o cmp.o cp.o

dd.o

quoted

grep.o l.o ln.o ls.o \
        mkdir.o mkfifo.o mknod.o more.o mv.o rm.o
rmdir.o sync.o touch.o vi.o

Where did you get these object files from?

I have a suspicion that these are  in  fact  parets
of  the  busybox
toolbox.  If  this  is  correct,  then  why  don't
you simply use the
Makefile that comes with busybox?

quoted

Then i tried to eliminate the problem by using

shared

quoted

library that is put the ld.so.1 file and libc.so.6
file in the /lib directory of the ramdisk .
The problem is the library files are too big in

size.

quoted

libc is 5.1mb and ld.so.1 is .5mb

You can strip the shared libraries for the target.

quoted

inorder to create a ramdisk image i have used the
initrd.sudo scrip file form the denx SELF package.
: ${IRD_SIZE:=4096k}

dd if=/dev/zero of=$IMAGE bs=$IRD_SIZE count=1
2>/dev/null

Again, I have the suspicion  that  this  code  comes
 from  our  SELF
package.  The  scripts provided by SELF take care of
all the problems
you are running in.

quoted

1.should i use statick linking

No, this will most probably just increasy your
memory footprint.

quoted

2.shared library ..

Yes.

What I don't understand: there is a working set of
tools and scripts.
You rip it apart, omit essential parts, and then
complain that it  is
not working any more.

What else did you expect?

Best regards,

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime
Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88
Email: wd@denx.de
It is surely a great calamity for  a  human  being
to  have  no  ob-
sessions.
    - Robert Bly

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