Dear Stefano, You really explained well. I have got it now. For now I have left the NAND flash and instead I'm now using NOR. I have successfully boot Linux with the latest kernel 3.5.3 from NOR.
Thanks a lot for all your support. On Thu, Sep 13, 2012 at 2:44 AM, stefano babic <sba...@denx.de> wrote: > Am 12/09/2012 23:07, schrieb Marek Vasut: > > Dear Muhammad Usman, > > > > Hi Muhammad, > > > Ccing Stefano. > > > >> I am adding support of imx35pdk in yocto. > >> I have done with my bsp. But the u-boot that build in response of my bsp > >> only runs over NOR and not on NAND. I spend 2 days on it but failed to > do > >> so. > > U-Boot for mx35pdk runs from NOR and not from NAND. There is no support > to run from NAND. Even if I can "convince" the board to boot from NAND, > this was not pushed to mainline. I explain why. > > You have found nand_spl with support for mx31pdk. This was the method we > have previously to boot from NAND. We have now a generic framework for > SPL, and all new boards (or added support for booting from NAND) must > use it. A board using the old nand_spl will not be merged into mainline. > > The mx35pdk was not ported to this generic SPL. We are really merging > this framework now to make it available for all SOC, because it was > common only for TI processor. > > > I read some where that mx35pdk required some external 4-pins bla bla > >> something like that. > > It does not require external pins. You have to configure the dip > switches on the mx35pdk. > > >> > >> Also the u-boot running on NOR is not configuring uImage. I am using > tftp > >> but when it comes on loading, it keeps on showing "T T T T T..." > (time-out > >> response). > > I think I have tested it recently, and it worked - which of the two > interfaces have you used in u-boot ? Both (FEC and SMC) are supported in > the mx35pdk u-boot, and both should work, as far as I know. > > > >> One thing more, in the above mentioned repository, there is a directory > >> like spl_nand in which they have already add mx31pdk for u-boot-nand.bin > >> support but not mx35pdk. What should i do to overcome all this ??? > > This is what I talked about before. All boards using spl_nand were added > a lot of time ago. spl_nand requires a separate driver for SPL, and this > is highly inefficient. The way we decided to go is to use a generic SPL, > valid for all SOC. And there is not yet a port for mx35pdk to boot > directly from NAND. > > Best regards, > Stefano Babic > > > -- > ===================================================================== > DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel > HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany > Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: off...@denx.de > ===================================================================== >
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