Re: linuxppc_2_4_mpc5200 / 5200lite first day conclusions

In message [ref] you wrote:

- It looks like that it is not so easy any more compile non u-boot
  version of kernel. Make zImage gives one compilation error
  mentioned and does not even work after it.

zImage  requires  a  Linux  bootstap  loader;  this  has   not   been
implemented (yet). We use U-Boot so we don't need it.

---> Easiest way is to move to u-boot

Right :-)

- With u-boot Wolfgang Denk give advice to make ram
   loadable version. I just did not find easy instructions
   to make it.

We do NOT recommend to use a U-Boot version booting from RAM; you can
do this if you really want and if you know what you're doing; what we
recommend is to use the standard version and install  it  instead  of
the original bootloader.

-- Compile u-boot flashable version. Even it
  is vompiled for 0xff800000 base address it looks a like
  that it needs still CFG_RAMBOOT if it is
  started from dbug with go ff800100

Building a low-boot configuration requires more than  just  modifying
the flash base address.

- Try to meke your own ramdisk image. There is still
  in uboot manual pages just mentioned "old wau" , read
  kernel Documentation/initrd.txt . The way i used
  to do it does not work any more. uboot just saus
  invalid magic number. Try found out what is wrong

Start reading the U-Boot manual at
http://www.denx.de/twiki/bin/view/DULG/Manual

You   can   find   pre-built   ramdisk   images   for   testing    at
ftp://ftp.denx.de/pub/LinuxPPC/usr/src/SELF/images/ (use the ppc_82xx
version for the MPC5200).

- Got kernel died with "cant fork init",
-->find out that your old linux kernel utilities, busybox, init
 jne are no longer copmpatible with libraries, make or find new set

You must have done something wrong when building the  ramdisk  image.
This works fine for me.

Looks a like that it is doable but it needs lot of time and
once again "reverse documentation read" that is that found
first a solution and then you find documentation ......

Please feel free to contribute to the DULG
(http://www.denx.de/twiki/bin/view/DULG/Manual).

This is a wiki, so everybody can help improving it.

May be good step by step instructions are needed someones that
won't spend all day long hacking

Maybe you can point out what is mussing in the DULG, and we add it?

-- After midnight you are hungry, tired and five cats and dog are asking
food
--> feed them and go to sauna ... ;)

I guess I know how that feels (even without cats or dogs).


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
On the subject of C program indentation: "In My Egotistical  Opinion,
most  people's  C  programs  should be indented six feet downward and
covered with dirt."                               - Blair P. Houghton

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