Re: Please help me...

The zImage contains an uncompress program at the start.  This program then
copies and uncompresses the kernel to another location in ram.

If your
using the kernel from Dan at

    ftp://linuxppc.cs.nmt.edu/pub/linuxppc/embedded/

Then use the debugger to start it at 0x00200000.  Refer to the code in
arch/ppc/mbxboot/misc.c

Yes, I use the mpc8xx.2.2.13.tgz to compile the kernel "zImage".
Do you mean that when I download the kernel "zImage" to RAM address 0x100000
on our own board (but not mbxboard) , and jump to 0x100000, It will
automatically run the uncompress program to copy and decompress the kernel to
0x200000, then  jump to 0x200000, the decompressed kernel will boot,  right  ?

I'm not the expert, Dan is, but he's been teaching me.

jeff
----- Original Message -----
From: "dony" <redacted>
To: "Raphael Bossek" <redacted>; "Brendan Simon"
[off-list ref]; "Dan Malek" [off-list ref]; "linuxppc-embed"
[off-list ref]
Sent: Thursday, December 30, 1999 9:29 PM
Subject: Please help me...

quoted

Hi,
      Now I am trying to embed linux onto our MPC860-based board. I have
some questions which may be solved by you embed-linux gurus....
     What I want to do  is the following:
    1     Initialize the MPC860 CPU , memory, serial port, enet port .
    2    Download  the linux powerpc kernel (which I have cross-compiled
on my X86 box)
           from the TFTP server to RAM on board.
    3    run the kernel.
Now the 1 and 2 step work well, but when I download the kernel to RAM on
board, It just cannot run.Do you know why? How can I programme to make
it run? Since the kernel is a compressed image (zvmlinux), need I make
some codes to decompress it and then run it? if so, how to do it?
 Thank you very much :-))
 Merry christmas & happy year.

dony

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