Hi Florian, On Wed, May 23, 2018 at 10:59:21AM +0000, Baeuerle, Florian wrote: > Hi, > > I haven't found a (good) way to modify the kernel device tree before booting > when using the bootchooser in combination with blspec. What seems to be done > quite often is registering fixup functions (of_register_fixup) in board-specific > code. > > I'd prefer not patch board-specific code, because my use case is rather specific > (passing the device serial number, the bootloader version, and a few other > things to the kernel). So the question is, if this use case is common enough to > provide a more generic way. > > My proposal is providing a command like this: > > of_fixup_chosen [PROPERTY] [VALUE] This seems to be very similar to what I suggested here: https://www.spinics.net/lists/u-boot-v2/msg32661.html I see no reason to limit this command to the /chosen node, we could equally well accept a full path to the node rather than just a property name. > > I guess it would suffice to only store strings in /chosen. > > Example: > of_fixup_chosen bootloader-version $global.version This is already done, See commit e96dc23280c43dd6b026ea71bcbaf3353abb4c83 > of_fixup_chosen reset-reason $global.system.reset See 58243d98b3f8e000c674a78a9466bd2fce213cc6 > of_fixup_chosen serial $serial_number No generic support for this one though. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 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
