On Wed, Apr 27, 2016 at 7:54 PM, Tom Rini <tr...@konsulko.com> wrote:
> On Thu, Apr 28, 2016 at 02:02:05AM +0200, Marek Vasut wrote: > > On 04/28/2016 01:49 AM, Robert Nelson wrote: > [snip] > > > 1: > > > > > > Yeap, end users like to delete "MLO/u-boot.img" that was in the "fat" > > > boot partition in our production beaglebone images specifically > > > "2014-05-14" which was shipped by default on rev C. Thus > > > soft-bricking/etc boards.. > > > > OK, so because hypothetical user is an idiot, we should use sub-par > > solution ? User can also be an idiot and generate U-Boot which is over 1 > > MiB, in which case I will turn your argument around against you. Sorry, > > I am not buying this. > > No, real users. Lots of them. From nearly every "community" oriented > board ever. Which is why the distros also go for this method, point #2. > > > > http://beagleboard.org/latest-images > > > > > > Moving it under the 1MB location, has solved that problem. > > > > Until u-boot grows over 1 MiB. This only postponed the problem. > > Since there is filesystem support in the SPL, we should use that > > as a superior solution which doesn't suffer from this problem. > > I thought people were supposed to be aligning their first partitions > much higher these days, 4MiB? as the general case for being safe > regardless of the actual flash in the SD card. Setting aside sandbox > which I hope grows extremely large for testing purposes, I really hope > U-Boot + SPL can always stay under 1MiB. Our job is to boot the next > stage. If we get so large in our design of implementing things that we > forget this, we have a problem. > I've followed the 4kb convention and fdisk defaults to 1MB offset: (even thou we aren't dealing spinning disks) https://www.ibm.com/developerworks/library/l-linux-on-4kb-sector-disks/ I haven't looked at the latest eMMC spec, but the eMMC 'boot' sections on current silicon is only 1MB (x2) mmcblk1boot0 179:16 0 1M 1 disk mmcblk1boot1 179:24 0 1M 1 disk mmcblk1 179:8 0 1.8G 0 disk Regards, -- Robert Nelson https://rcn-ee.com/ _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
