On Tuesday, November 24, 2015 at 02:36:13 PM, Chin Liang See wrote: > Hi Pavel, > > On Tue, 2015-11-24 at 14:31 +0100, Pavel Machek wrote: > > Hi! > > > > > > > > So what do I do if I want to boot arria10 from NAND ? UBI and > > > > > > UBIFS > > > > > > won't > > > > > > fit into 256kiB, so I think using SPL might be the sensible > > > > > > thing > > > > > > afterall, > > > > > > since you would be able to use arbitrarily-sized U-Boot. > > > > > > > > > > I hope Chin Liang can chime here, I know that we have support > > > > > for > > > > > NAND, > > > > > but I haven't been part of that task, so I don't know how it's > > > > > being > > > > > done. > > > > > > > > Finally my email is back online :) > > > > > > > > We do have NAND support but not with UBI and UBIFS. > > > > > > I just hope you're not using raw NAND and just hoping it will work. > > > > HERE: > > > > For this support, user can use U-Boot to load arbitrarily-sized U > > > > -Boot > > > > that run on SDRAM. > > > > ... > > > > > > One of the nice thing of U-Boot over SPL is the console support > > > > and > > > > ability to troubleshoot. > > > > This is possible with Arria 10 SoC as we have larger OCRAM (256kB > > > > vs CV > > > > SoC 64kB). > > > > > > OK, that's not really the point here -- the point is, if you > > > compile enough > > > features into U-Boot, it will be bigger than those 256k. What will > > > you do > > > then ? > > > > You'll compile small U-Boot, and use it to load larger U-Boot, as he > > said in the mark "HERE" above. > > > > And yes, I guess that makes sense, and yes, we should finally make > > loading U-Boot from U-Boot oficially supported, at least on Socfpga. > > Yup, you got it :) > Thanks
So why exactly don't we use SPL instead ? The purpose of SPL is to do exactly this without the extra cruft which is part of U-Boot and the unnecessary overhead of the full U-Boot. And you don't need to hack U-Boot to support loading U-Boot. Best regards, Marek Vasut _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
