Hi Maupin, Which Hardware did you use ? How different was ur hardware with Dm355 EVM ? If Yes, Did u just replace existing 2k pg Nand with another 4k pg Nand because i gess RBL just supports 2k pg Nand already available their.
Furthur which kernel did u use as base code (2.6.10 or latest GIT from Montavista i.t 2.6.28) ? On Wed, 17 Dec 2008 Maupin,Chase wrote : >In my testing that was enough to support 4K nand pages. The only other thing >that needed to change was that in nand_ids.c the older NAND chips can share >the same device id as the new one. Thus the new NAND chip is detected >incorrectly and the page size is wrong. i.e. for Samsung the NAND id for the >512MB nand chip was 0xd5 and the id for the new chip was 0xD5. Since these >are hex values the new chip was mistakenly detected as a 512MB part. You may >need to comment out the old part. > >Lastly, there is a limitation in the nand_base.c code of 2GB for the total >size of the nand chip. This is because they use a signed value for the offset >which causes bit extension during calculation of the nand chip to use for the >offset. Assuming this was fixed there is then a 4GB limitation in the MTD >subsystem. > >Still, to at least get 2GB of NAND with 4K page sizes all I needed to do was >update the nand_ids.c file and increase the NAND_MAX_OOBSIZE variable to 128. > >Sincerely, >Chase Maupin >Software Applications >Catalog DSP Products >e-mail: [email protected] >phone: (281) 274-3285 > > > -----Original Message----- > > From: Felipe Balbi [mailto:[email protected]] > > Sent: Monday, December 15, 2008 2:29 PM > > To: Maupin, Chase > > Cc: [email protected]; [email protected]; davinci-linux- > > [email protected] > > Subject: Re: Problem with u-boot and flash MT29F16G08DAA > > > > On Mon, Dec 15, 2008 at 02:19:24PM -0600, Maupin, Chase wrote: > > > You will definitely need to change the NAND_MAX_OOBSIZE to 128 for 4K > > pages. You may also need to change the FFCHARS definition to 4096 to be > > safe. > > > > sure, that's an easy guess. But is that really enough in the end ? I > > hope so :-) > > > > -- > > balbi > >_______________________________________________ >Davinci-linux-open-source mailing list >[email protected] >http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
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