On Thu, May 6, 2010 at 6:03 AM, Wolfgang Denk <w...@denx.de> wrote: > Dear Nishanth Menon, > > In message <j2h782515bb1005060354tc4574d80wb4a1aa3a2b40b...@mail.gmail.com> > you wrote: >> >> your points are valid, two options as I see here: >> a) build configurations - nand_boot, nor_boot etc.. >> b) IMHO, the better solution would be to allow the same u-boot to boot >> from all devices (nand, nor, onenand, mmc) without needing a rebuild. > > b) is clearly the better and more user-friendly solution. > >> but the neccessity for that is to have environment variable which can >> be moved around.. ... > > Hm... really? Assuming that all the storage devices are always > present, you can decide to use one standard location for the > environment independent of where the U-Boot image gets loaded from > (that may actually be considered an advantage by some). it is like http://dev.omapzoom.org/?p=bootloader/u-boot.git;a=blob;f=board/omap3430sdp/mem.c;h=a3dad962390b35501c83f8cde1dd2fd1f6d779d6;hb=HEAD#l107
Infact in some of the settings, one of the chips might even not be mapped :(.. yes, one option could have been to use a single flash for all env (in fact some platforms like (if i recollect beagle booting off MMC uses NAND for env) - but is not a nice idea if the usecase is to use that entire flash for filesystem.. so the safe option in general has been to expect the environment to stick to the memory u-boot booted off from.. > >> ... TI has an implementation based on an ancient u-boot >> which actually does this, it will be interesting to know if there are >> others who may be interested in a similar feature in mainline u-boot. > > Sure - please post a patch (as RFC) so we can see what you have in > mind. Yep.. waiting for my next free cycle ;) i would have pointed as an RFC to the git repo history, unfortunately the transition from clearcase to git was done as a single blob :( Regards, Nishanth Menon _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
