Hi Steffen, Am 16.04.19 um 16:10 schrieb Ulrich Ölmann: > On Tue, Apr 16 2019 at 15:51 +0200, Ulrich Ölmann <u.oelm...@pengutronix.de> > wrote: >> Hi Steffen, >> >> On Tue, Apr 16 2019 at 14:53 +0200, Steffen Kothe >> <steffen.kothe.gc1...@googlemail.com> wrote: >>> I try to update the U-Boot Loader on two different partitions. >>> >>> /dev/mmcblk3boot0 >>> /dev/mmcblk3boot1 >>> >>> A restriction on our i.Mx6 platform is location of the u-boot entry on >>> the partition. >>> >>> Offset: 1024 Byte Address: 0x400 >>> >>> So a raw copy would start at address 0x00, but we have to start 0x400 >>> for the entry point.
which platform (i.mx6 variant) is that exactly? Where does the restriction come from? I would have expected that all i.mx6 platforms can handle eMMC boot partitions the same way. >>> Does rauc provides any options to customize the startaddress for a raw >>> copy/install of a binary file (u-boot binary)? >>> >>> I have took a look into the source code, but found out, that there is >>> no option to customize the default offset address for a write on a >>> partition. >>> >>> >>> Could you provide some help in this case? >> >> take a look at hooks, especially the subsubsection "Install Hook": >> https://rauc.readthedocs.io/en/latest/using.html#slot-hooks . > > ... and use your own logic for updating the bootloader (forgot to > mention that): write a script that switches the eMMC's bootloader > partition from read-only to read-write and use the mmc-utils (see [1] & > [2]) to atomically switch the eMMC's partition once it was written. This is exactly what RAUC provides out-of-the box. Thus I would like to understand why it is not working in that case. I assume you are doing eMMC boot partitions update to gain atomicity, right? Did you notice the eMMC boot partition atomic update feature of RAUC? https://rauc.readthedocs.io/en/latest/advanced.html#update-emmc-boot-partitions It basically performs the steps Ulrich described above. And please consider subscribing to the mailing list, because posts by non-members are blocked by default (and you won't receive messages that are replied to the list only... ;) ). Thanks and best regards Enrico -- Pengutronix e.K. | Enrico Jörns | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-5080 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ RAUC mailing list
