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.
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. > 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. - Felix _______________________________________________ Lede-dev mailing list Lede-dev@lists.infradead.org http://lists.infradead.org/mailman/listinfo/lede-dev
