Hpw do I change the startup adr of an app

Ok ... finally had some time to check a few things...

> When the code is executed the NIOS dies ...

Hmmm ... the code was tested so I believe it to be

correct. You can call it _after_ copying the kernel

code. The p parameter should point to the address

where you copied the kernel to, the len parameter

is the length of the kernel (in bytes).

>> 3. Make sure you have your stack setup.

> Huh?

Disregard ... the kernel code has no dependency

on a bootloader stack.

>> Check the kernel startup code to make sure its

>> relocation implementation isn't broken.

> I dunno what that is. Relocation implementation...

> wheres that???

It's in arch/nios2nommu/kernel/head.S ... this is where

it all begins ;-) The kernel startup code copies itself

from an arbitrary address to its run-time (linked)

address (vma, etc) as necessary.

I didn't see any obvious problems unless ...

you are copying the kernel to a location just

below it's actual run-time addr such that it

will overlap. The startup code does not account

for such a situation ... it will over-write itself

while it's relocating.

Safest bet is to do one of the following:

1. Copy the kernel to its run-time address (vma).

In which case your boot code must know the

correct address. Or,

2. Copy the kernel up high in RAM, then let it

relocate itself to a lower address.

Regards,

--Scott