Cowon D2

[store88]

@vodi
./mktcctool D2N.bin bootloader.bin D2N-2.59.bin
D2N.bin is copied from folder 1

@all
I failed again, when I try 2.57 firmware
Maybe my machine is different at all

I bought D2 in China, is a reason?
or rockbox cannot work with 2Gb D2?

[vodi]

Then you maybe have a different NAND, this would be interesting for shotofadds.

[store88]

@vodi

what is the meaning of "shotofadds"

and how can I get the Nand details of my D2

[vodi]

"shotofadds" is the only active NAND-Driver Developer i know, but i don't know, him and he is now a pretty long time inactive.

[store88]

Wow, Nand driver programming, I know nothing about it
It seems related to bootloader closely.

Maybe I will give up the effort of patch my D2 in order to run rockbox in it

[vodi]

these programming skills are like magic for me ;-)

The only programming language i really know is Java. And i haven't heard about any JVM for rockbox. This would be an idea for a nice plugin ;-)!

EDIT:
I'm not the first guy with this idea:
http://www.rockbox.org/tracker/task/7072
http://www.rockbox.org/tracker/task/2903

[store88]

I'm a java developer too.
newbie of java
just work for 1 year

[outlawman]

3amsleep, it would be great!

[mcuelenaere]

@store88:

The panicf() you get was because the NAND ID driver doesn't have any data for that specific NAND, you'll need to look up what NAND chip corresponds with those identify bytes and add them to nand_id.c

@all:
Please keep this on-topic, Java has nothing to do with Rockbox nor the Cowon D2..

[saratoga]

mcuelenaere:  Usually we just delete off topic posts and remind the people posting them of the forum guidelines via PM.  That way threads remain somewhat readable.

[3amsleep]

@outlawman

here is the patched rockbox build you asked for, it includes the alternative hold and touchscreen modes, just unzip to your D2 root and overwrite the old .rockbox folder.

http://rapidshare.com/files/196478306/rockbox.zip

enjoy =)

[store88]

@mcuelenaere
How can I get Nand chip responds

"Unknown NAND: 0xEC 0xD5 0x14 0xB6 0x74"
Is this the responds you mean

[isanggon]

store88,

How about try to download and use another version of patched firmware. May be There wasn't hardware change on D2.

As I know, all of the D2's hardware are made in korea. And rockbox works well on latest selled version of D2

[store88]

@isanggon

I only tried 2.57 and 2.59

In addtion, another guy in a chinese forum has the same error as mine.
He or she use 3.57 firmware

@all
I have no brave of taking apart of my D2
I'll try rebuild the source and patch my D2 firmware, but my D2 is in "low battery" status now

I add the following code in nand_id.c

                                              /* K9GAG08U0 */
    {0xD5, 0x14,             128,            8192,      2048,         64,          2,          3 },

maybe it will not work, but I will try later

and now the error is:
*PANIC*
bmp tag not present
The rockbox I used is the lastest version(February 11, 2009)

[mcuelenaere]

store88:

You'll need to look for a datasheet for that specific NAND chip which specifies the needed information to add in nand_id.

The 'bmp tag not present' error is TCC-specific, and AFAIK only shotofadds can help you with that..