On Mon, Nov 20, 2017 at 12:37:51PM +0100, Emmanuel Vadot wrote: > On Mon, 20 Nov 2017 10:24:08 +0100 > Maxime Ripard <maxime.rip...@free-electrons.com> wrote: > > > Hi, > > > > On Fri, Nov 17, 2017 at 03:20:03PM +0100, Alexander Graf wrote: > > > > > > > > > On 17.11.17 14:04, Maxime Ripard wrote: > > > > On Fri, Nov 17, 2017 at 12:21:49PM +0000, Andre Przywara wrote: > > > >> Hi, > > > >> > > > >> On 17/11/17 08:27, Maxime Ripard wrote: > > > >>> > > > >>> I guess I also have a side question here. How do the installers deal > > > >>> with the ESP partition? Would they create a new filesystem on it no > > > >>> matter what, or are they a bit smarter than that? > > > >> > > > >> I would expect any installer to not mess with the ESP. After all the > > > >> ESP > > > >> belongs to the firmware, and multiboot (both multiple Linux versions as > > > >> well as other OSes like Windows or BSD) is one main feature of the ESP. > > > >> > > > >> The only exception might be if the ESP is not formatted. > > > >> > > > >>> My actual question being what will happen if one stores the U-Boot > > > >>> environment on that partition, and then runs an installer? Would the > > > >>> environment be gone? > > > >> > > > >> I would say that the ESP is a perfect place for the environment. It's > > > >> FAT and it belongs to firmware, so OSes are just expected to *add* > > > >> their > > > >> bootloaders, without touching any other file on it. > > > > > > > > Ok, perfect then, thanks! > > > > > > Please make sure to > > > > > > a) Format it as FAT and > > > > That might be the toughest part :) > > > > AFAIK, u-boot is not able to format any filesystem. We could just > > flash a raw FAT filesystem though, but looking into it might help for > > the environment discussion. > > Also note that if we go to 16MB for the size you need to tweek > clusters and other properties for FAT32 as using the default ones will > not work (the minimal size is ~35MB iirc).
I guess the conclusion has been that we would stay with 128MB, so I guess it's not a problem :) Maxime -- Maxime Ripard, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com
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