Thread (39 messages) flat view 39 messages, 7 authors, 2008-02-17

Re: Could the DTS experts look at this?

From: David Gibson <hidden>
Date: 2008-02-12 00:20:30

On Mon, Feb 11, 2008 at 08:07:14PM -0500, Sean MacLennan wrote:
David Gibson wrote:
quoted
But the partitions are all the same size, so in Map 2 there's a great
big gap between Env and U-boot?  Or there's a great big gap before
FPGA?
  
There's a great big gap before the FPGA, 63M worth. Before we got the 
NAND working, we stored the kernel, the ramdisk image, and a persistent 
store there. But we moved everything to the NAND and are now going to a 
much smaller NOR chip.
Ok.
quoted
quoted
The u-boot, env, and FPGA are anchored at the bottom of the flash. 
Kernel is anchored at the top. Everything else goes in the middle.
    
Um.. so "bottom" actually means "high addresses" in the above?
  
Yes. Top = offset 0, bottom = size-of-flash.
Um.. ok.  Not the way around I'd use, certainly...
And there is a bug in the initial code, I have to update the reg length 
field. 
Err.. now I'm doubly confused.  Initially I thought you'd need to
change the size part of reg somewhere, but your description above just
convinced me you didn't (because you were essentially just shifting a
4M map up into the high rather than low 4M of the 64M space).  Now
you're saying you do..
I now have a Rev B board in my hands and tested that it works for 
both Rev A and Rev B.
-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson
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