Hi, Huang Shijie wrote: > 于 2014年03月28日 16:16, Lothar Waßmann 写道: > > Still there is no need for the Linux NAND driver to be able to read or > > write partitions in a format that the Boot ROM can understand. Thus it > If you do not use the NAND boot, there really no need to do so. > There is no need for the ROM code to access any other partition than the bootloader itself. Thus Linux can perfectly well be booted from NAND without any byte swapping. > Since you need the NAND boot, we should enable the swapping for imx28. > Why? There is no need for Linux to do any swapping when not accessing the bootloader partition. > > is perfectly legal to allow disregarding the BB marks and solely rely on > > a flash based BBT. > > > The BB mark is in the page 0 of a NAND block. But the swapping can occur > in _each_ page of > a NAND block, _NOT_ only the page 0. > > I think you are confusing at these two things. > No, I'm not confusing anything. The swapping in any other page than page 0 is completely useless. Thus, when there is no need to recognize the BB markers, there in no need to do any swapping too. Lothar Waßmann -- ___________________________________________________________ Ka-Ro electronics GmbH | Pascalstraße 22 | D - 52076 Aachen Phone: +49 2408 1402-0 | Fax: +49 2408 1402-10 Geschäftsführer: Matthias Kaussen Handelsregistereintrag: Amtsgericht Aachen, HRB 4996 www.karo-electronics.de | info@xxxxxxxxxxxxxxxxxxx ___________________________________________________________ -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
