On Tue, Feb 04, 2020 at 03:08:18PM +0100, Christian Eggers wrote: > Platform: i.MX6 (booting from NAND) > > I would like to be able to update Barebox from Linux using a framework like > RAUC or swupdate. The RAUC documentation states: > > https://rauc.readthedocs.io/en/latest/advanced.html#bootloader-update-ideas > > 7.6.3. Bootloader Update Ideas > > > > The NXP i.MX6 supports up to four bootloader copies when booting from NAND > > flash. The ROM code will try each copy in turn until it finds one which is > > readable without uncorrectable ECC errors and has a correct header. By > > using the trait of NAND flash that interrupted writes cause ECC errors and > > writing the first page (containing the header) last, the bootloader images > > can be replaced one after the other, while ensuring that the system will > > boot even in case of a crash or power failure. > > > > The slot type could be called “boot-imx6-nand” analogous to eMMC. > > In the barebox documentation I only found how to update barebox via the > barebox_update command within barebox itself. > > Updating barebox seems to be SoC specific. Is there already any existing code > to do this from Linux? I remember that someone asked for updating i.MX6 NAND bootloader from Linux and also that in the end he reported he was successful. Unfortunately I can't remember who it was :( > Or would it be more wise to write the new barebox image > to a temporary UBI partition and let barebox do the update itself on next > reboot? At least this is the easiest way out in the current situation. It would be great to have code similar to what barebox has in the barebox_update code under Linux, especially for cases where updating barebox is more than just writing plain to a device or file, like it is on i.MX6 NAND. Sascha -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
