booting on embedded planet RPX_LITE-DW (823e)

[curt brune <curt@acm.org>]

Hello,

I'm using the ELDK from www.denx.de/ELDK for the ppc_8xx target -- it was very easy to
download and setup !

I'm trying to build the 2.4.4 kernel that comes with ELDK (..eldk/ppc_8xx/usr/src/linux).

My board is a RPX_LITE-DW (w/ a 823e PPC) from embedded planet.

I have a couple of questions regarding:

  * building a kernel with a ramdisk image

  * loading a kernel image via tftp on the RPX_LITE


_Building a ramdisk image:

  I know how to build the ramdisk image, however, I do not know how to tell the kernel to
  use the ram disk image.  How is this done?  Do I copy the image to
  usr/src/linux/arch/ppc/boot/images or to mbxboot ?  Do I use "make zImage.initrd" ?  Any
  other gotchas ?

_Loading a kernel image:

  I believe I have the tftp setup correctly.  I downloading the image and jumping to its
  start like this:

  >> t
  >> Load using tftp via Ethernet
  >> Enter server IP address <10.0.0.1> : 
  >> 
  >> Enter server filename   <ppc-zImage> : 
  >> 
  >> Enter (B)inary or (S)record input mode <S> : B
  >> B
  >> Enter address offset  : <FFF80000 hex> : 180000
  >> 180000
  >> .512.1024..2048....4096
  >> Total bytes = 2270744 in 3565728 uSecs
  >> Loaded addresses 00180000 through 003AA617.
  >> Start address = 00180000
  >> >g
  >> g
  >> [Go 00180000]
  
  Is that a good starting address?  How do I know what the starting address should be?
  Needless to say my serial connection hangs after the "Go 00180000" command, so I do not
  know what is happening.


Any help would be greating appreciated.

Cheers,
Curt