[U-Boot] [PATCH 1/6] arm: socfpga: cyclone5-socdk: Enabling mtd partitioning layout

Marek Vasut
2015-12-14T12:20:28Z

On Monday, December 14, 2015 at 12:51:16 PM, Pavel Machek wrote:
> On Mon 2015-12-14 12:31:32, Marek Vasut wrote:
> > On Monday, December 14, 2015 at 12:26:39 PM, Pavel Machek wrote:
> > > On Mon 2015-12-14 12:09:08, Marek Vasut wrote:
> > > > On Monday, December 14, 2015 at 08:54:38 AM, Pavel Machek wrote:
> > > > > (Please, trim your emails when replying)
> > > > >
> > > > > > Try this:
> > > > > >
> > > > > > mtdparts=1m(u-boot),256k(env1),256k(env2),14848k(boot),112m(root)
> > > > > > ,- at 1 536k (UBI)
> > > > > >
> > > > > > This will create overlapping partitions "boot,root" and "UBI" .
> > > > >
> > > > > Just because you can does not mean that you should. This looks like
> > > > > a nasty trap for a user.
> > > >
> > > > Please explain in detail why do you think so.
> > >
> > > Please make a 200 page study of human psychology explaining that noone
> > > would ever be confused by two overlapping partitions :-).
> >
> > Add a comment explaining the situation and reasoning behind that, problem
> > solved.
>
> We do partitions so that people don't overwrite data by
> mistake. Having overlapping partitions kind of defeats the purpose.

I'd expect that in case you are fiddling with MTD on a bootloader level, you
have at least a vague idea of what you are doing.

> Just because trap is documented does not mean that it is not
> nasty. 199.95 pages to go.

Do you have a better idea how to satisfy both sets of people, ones which want
kernel on a separate partition and ones which want to use single UBI volume
then ?

Best regards,
Marek Vasut