On 6 June 2016 at 09:48, Ladislav Michl <la...@linux-mips.org> wrote: > On Mon, Jun 06, 2016 at 09:08:47AM +0200, Michal Suchanek wrote: >> On 5 June 2016 at 20:23, Ladislav Michl <la...@linux-mips.org> wrote:
>> > Unless I'm missing something, partition layout is passed to the kernel >> > from the bootloader. So if kernel ends up with a different layout than >> > a bootloader, there's a bug somewhere and that should be fixed. >> >> That's not it. The problem is that if this patch changes the layout >> then building u-boot before this patch gives one layout and after this >> patch it gives another layout effectively changing the partitioning. >> All to save a few megabytes of a several gigiabyte medium. And if you >> say that people can always set the partitioning by hand then it >> completely defeats the purpose of fine-tuning the default in the first >> place. > > U-Boot never prevented people from shooting their own leg, therefore > there's no 'feature' preventing them to change default layout. They > are still free to do whatever they want it they find it useful. > Also I'm not proposing to change layout for exiting boards, just > proving way to do it. igep00x0 boards had buggy NAND support since > begining, so while fixing that, let's do it right way. Note that > this feature is completely optional. > >> If on the other hand Linux got support for sizing partitions in nand >> pages or eraseblocks and a patch changed the mtdparts layout to use >> the new units then either both u-boot and Linux support the units or >> parsing the partition fails. So it's safe and flexible and more >> general and probably even less work on u-boot's part. > > Okay, specifing size in therms of eraseblock would solve my problem > and I have to admit I'm not aware such a thing exists. Any pointer to > the patch introducing that change? > I am not aware of any. it's on the list of nice to have things I will probably not get to, Anyway, It's imho the place to put this code so that Linux does not depend on u-boot for pre-chewing it's partition table to get the partitions right. Thanks Michal _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
