From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Date: Mon, 14 Dec 2015 13:53:53 +0100 Subject: [U-Boot] [PATCH 1/6] arm: socfpga: cyclone5-socdk: Enabling mtd partitioning layout In-Reply-To: <201512141320.28567.marex@denx.de> References: <1449825353-2568-1-git-send-email-clsee@altera.com> <201512141231.32760.marex@denx.de> <20151214115116.GC14305@amd> <201512141320.28567.marex@denx.de> Message-ID: <20151214125352.GA5485@amd> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Mon 2015-12-14 13:20:28, Marek Vasut wrote: > 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. Yes, but people should not have to expect we prepare traps for them. > > 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 ? If you expect people to read a comments explaining a situation, you can easily add an explanation and (commented out) alternative configutation that can be used. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html