In message 45530.61.95.208.2.1148300461.squirrel@61.95.208.2 you wrote:
I have a specific requirement to change the Magic number of the linux kernel in my embedded system.
You are off track.
I cound see the Magic number is defined in U-boot files: 1.include/image.h:#define IH_MAGIC 0x27051956 2.cpu/ppc4xx/start.S: .long 0x27051956
This magic number is only used by U-Boot, and ther e only in the image header. It has no relevance in any way to the LInu xkernel.
So i can modify in u-boot to make it compatible to my Kernel (i am using montavista linux version 2.4.20), but i am not able to see this kindof info anywhere in the kernel source files.
You are looking at the wrong place. This magic number is not used or accessed anywhere in the Linu xkernel.
If anyone knows how the linux magic number is generated and what are the files need modifications inorder to change magic number please let me know.
Linux itself has no such magic number. Especially not on PPC.
[But if you find a way to change that magic number, I would not protest if you added 10 or 20 to the last 4 digits. Just make sure the change is propagated back to it's origin. :-) ]
Best regards,
Wolfgang Denk