On Thu, Sep 15, 2016 at 1:24 PM, Felix Fietkau <n...@nbd.name> wrote: > On 2016-09-15 20:27, Tim Harvey wrote: >> Felix, >> >> I like the 'idea' of using mtdsplit (very clean) however this break's >> the ability to downgrade firmware. If I take an old firmware image (a >> version of OpenWrt prior to cns3xxx moving to the 4.4 kernel which >> became too large to fit in the hard-coded mtd partitions chosen long >> ago) I can upgrade with the new mtdsplit sysupgrade however if I then >> try to downgrade to a non-mtdsplit sysupgrade image from the older >> kernel it will fail in the image check with 'Invalid image type. Image >> check 'platform_check_image' failed.'. I suppose if we wanted to >> support upgrade and downgrade we would need to keep logic in >> platform.sh to deal with the old partitioning. > You can still downgrade, just use lede-cns3xxx-squashfs_laguna_nor.bin > or lede-cns3xxx-squashfs_laguna_spi.bin instead of the -sysupgrade.bin. > The new sysupgrade code will accept it, and even keeping the > configuration should work that way.
ok - that makes sense > > This is a bit confusing now, so some documentation will have to be > written. I don't see any easier way though, and simply changing the > partition sizes would also not have worked without breaking stuff. > right - I can handle that on our wiki site with documentation (and will update lede docs once I find the appropriate place) >> I suppose sysupgrade != sysdowngrade so maybe I should care about >> downgrading without JTAG? >> >> Also, to create JTAG images I need the root.squashfs and the uImage so >> we need to keep those in the BIN_DIR (although we don't need to pad >> them... I can do that in script that creates JTAG'able images). > The new sysupgrade.bin can be written directly to flash now. You don't > need separate root.squashfs and uImage anymore. > yes, this makes sense too. Great - thanks for the patch Tim _______________________________________________ Lede-dev mailing list Lede-dev@lists.infradead.org http://lists.infradead.org/mailman/listinfo/lede-dev
