[U-Boot] U-Boot 1.3.1 booting problem

[Jerry Van Baren <gvb.uboot@gmail.com>]

pugazh mahalingam wrote:
> Hi,
> I'm porting u-boot-1.3.1. on a MPC8548PC processor and I'm using the start.S
> file of u-boot-1.1.4.
> But I encounter booting problems.. The processor cannot bootup .. its going
> to hang state ..
> I used start.S of u-boot-1.1.4 since it works fine for u-boot-1.1.4 ..
> please help in this regard ..
> 
> thanks ..
> 
> regards
> pugazh

Hi pugazh,

 From your description, it sounds like you took 1.3.1, discarded its 
start.S, and simply tried to replace it with the start.S from 1.1.4.

If that is what you are attempting, it isn't surprising it doesn't work.

(Listen to Kumar's advice: you should go all the way to the latest code.)

If you are trying to pull your port forward from 1.1.4, you are going to 
have to understand what the differences are between 1.1.4 and 1.3.1 (or 
newer).  There just aren't any shortcuts.

Time to crank up your JTAG debugger and see where the code is stopping 
and why.

You can (theoretically) use git-bisect to figure out where booting 
breaks in the series of changesets from 1.1.4 to 1.3.1.  It isn't going 
to be fast because you are talking years of changes (and I'm guessing 
your board isn't in the standard u-boot tree, which may cause you grief 
too).

We really cannot help you much, you basically have given us no useful 
data: "It's broken and there are lots of changes."  We're good, but we 
aren't *that* good.  :-(  Sorry.

Good luck,
gvb