[U-Boot] Problems upgrading NAND

[Alemao]

On Fri, Jan 16, 2009 at 8:46 PM, Anton Vorontsov
<avorontsov at ru.mvista.com> wrote:
> On Fri, Jan 16, 2009 at 02:02:26PM -0200, Alemao wrote:
>> > I'm guessing that 1.2.0 was a BSP u-boot, that was not upstream.  I don't
>> > think upstream 1.2.0 had UPM NAND support.
>>
>> You are right, there were no UPM support on U-boot-1.2.0.
>> I used patches sended by Anton from here:
>>
>> http://www.nabble.com/-PATCH-v2-0-5--mpc83xx%3A-MPC8360E-RDK-related-patches-td14717360.html#a14717487
>
> There were known issues with this version (it only worked for the
> small page NANDs, IIRC).
>
> This is already fixed in the upstream U-Boot, via this patch set:
>
> http://www.nabble.com/-PATCH-v3-0-2--NAND-FSL-UPM-driver-update-td17667335.html
>

It worked. Now here u-boot-1.2.0 supports NAND 512 and 1Gbit.

The only problem is that kernel is complaining about empty spaces on
nand flash. It seems that u-boot when writing to nand is not using all
page/block space:

[  131.220948] Empty flash at 0x00033ff8 ends at 0x00034000
[  131.309014] Empty flash at 0x00063f68 ends at 0x00064000
[  131.354234] Empty flash at 0x00093f68 ends at 0x00094000
...
[  139.266081] Empty flash at 0x0076bffc ends at 0x0076c000

With NAND 512 Gbits I usually got only one "Empty flash at..."

Is this a known issue? Or should I patch nand core? I didnt see
relevant changes in drivers/mtd/nand/* that could cause this behavior
(based on U-Boot-1.3.4, U-Boot from head differs a lot)

Thanks in advance,

--
Alemao