On Thu, 23 Mar 2017 08:12:38 +0100 "H. Nikolaus Schaller" <[email protected]> wrote:
> Hi Andreas, > > > Am 23.03.2017 um 07:40 schrieb Andreas Kemnade <[email protected]>: > > > > Hi, > > > > On Mon, 20 Mar 2017 12:42:44 +0100 > > "H. Nikolaus Schaller" <[email protected]> wrote: > > > >> Hi, > >> in parallel to trying to handle all the other GTA04 tasks, I have fixed > >> some minor issues in kernel, u-boot and rootfs so that we have first > >> release > >> candidate for a new production SD image. > >> > >> A production SD image is used for flashing (unbricking) a GTA04 device. > >> The last one [1] was based on kernel 3.12 and Debian Wheezy which wasn't > >> bad at all, but did not support the OneNAND of the GTA04A5. > >> > >> The biggest visual change is that there are some LXDE desktop icons for > >> starting Simple-Gsmgui [2] (developed by our commmunity member akemnade), > >> Camera Demo (camera driver is not working) and GPS demo (well this is > >> not even a demo but full FoxtrotGPS). So it should become possible to > >> operate the most basic functions from NAND only. > >> > >> If you have a little time and want to test/upgrade, please follow > >> these instructions and report issues and observations. > >> > >> Please note that if anything fails you might need the RS232 cable > >> and the original production image [1]. > >> > > > > well, if anything fails (besides uboot) I will try to boot from another > > partition. and fix things over ssh. > > To me, having multiboot is one of the most important features of the > > gta04. > > I do not see any instructions here to have some multiboot system or > > replace a single one of the installed systems. I have a partition > > specially reserved for some testing systems. > > Hm. I do not exactly understand what the problem is for you. You can simply > use your multipartition SD card after doing these tests and upgrades and it > should still boot fine. > Yes and no. For the nand + uboot stuff it is correct. For rootfs: Maybe I understood you wrong. If it is only for testing the procedure of installing a lxde system: also yes. And I will test it. For testing if the system works well: only theoretically yes. If I give it a real world test (when not sitting near my pc), I need to be able to switch to something known working. That would either mean that I need to have a known-good microsd with me and switch them. But microsd cards have a quite low "sublimation" temperature when not inserted into a device (like pens). Or another partition with a known working system. On my bigger hardware I also do not switch a hard disk because I want to test a new system. I just direct the installer to use an empty partition for that. > The only risk I have experienced is that the old U-Boot environment in NAND > may be incompatible with the new one and then U-Boot stops before flashing > anything new. > > Then, one must do the nand-erase procedure I have mentioned. And that one > can only be commanded easily through the RS232 console. > > In theory one could boot back to Linux with a working SD card, log in through > ssh and overwrite /dev/mtd2 but I have never tried that. And it has the risk > that after doing this, you can't boot the working SD card any more. And if you > try the production card and it still fails you have no access any more. > > > Of course *I* now how to do it but it should be a really well documented > > and prepared path. > > I assume all those who want to be testers of new base software like this know > what they do... > All I am asking for is to have also e.g. PART=/dev/sdd3 ./makesd your_favorite_root_fs That would make that usecase as easy as technically possible. Regards, Andreas PS: If you wonder why I was a bit more silent the last two weeks: I accidentially have bought a dvb-t2 stick not supported by linux to have my cubietruck+vdr ready for the upcoming dvb-t2 switch in Germany. So I had to add kernel support for it which was more work than just adding a device id somewhere. But the patch series is now submitted to LKML. So I will have time again for gta04 stuff.
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