Hi Kenneth, On Mon, Aug 22, 2016 at 09:54:46PM +0200, Kenneth Johansson wrote: > so I'm on commit 2a170e40860034a9a5157306547c1a333be3845b and moving up to > head is not really an option right now. > > what I want to do is change target mt7621 to generate a rootfs in ubifs, not > ubi so no ubinize needed. In addition to this I want the kernel in uImage > format included in the rootfs in /boot/. and same for the device tree. and > it would be nice to have kernel uImage and dtb also in > $(TOPDIR)/bin/ramips/.
Can you elaborate why you need/want uImage and DTB to be inside a filesystem instead of appending the DTB to the Kernel and storing it inside a UBI volume? > > sound like a 5 minute job but oh no I see no end in sight. Problem is that I > do not understand what I need to do. To many macro expansions involved in > the makefile. > > so far I changed. > change the kernel code so that it takes the dtb from u-boot if it passes in > the dtb to the kernel. Before it only used the dtb that is patched in. this > works fine with the ramdisk image. Great. Having U-Boot pass the DTB is a desirable feature indeed. And parting ramips/mt7621 support to vanilla U-Boot would be amazing (but supposedly also quite a lot of work). If you already build U-Boot from source yourself, you could also use a FIT image containing both, DTB and Kernel which is already much cleaner than patching it into the kernel. This then allows U-Boot to e.g. pass the MAC address appropriately via device-tree instead of the kernel reading it from the environment or EEPROM partition. > > I added ubifs to FEATURES in target/linux/ramips/Makefile so that "make > menuconfig" can select ubifs image. I also select the option that should > include uImage and dtb in rootfs. this do not work. so I tried to fix it in The option to include dtb and uimage in rootfs is fundamentally flawed and broken. It was added at a time when proper support for generating UBI images wasn't yet implemented in OpenWrt. Maybe we should mark it as deprecated? > target/linux/ramips/image/Makefile. But what changes should I do ? It is > really hard to understand what the correct change really is and so far all > my testing results in more or less no change or some other error showing up. > > any suggestiongs ?? its fine to do it for master I'm sure I can backport it > once I have the correct changes to target/linux/ramips/image/Makefile. If you really, really need a boot-filesystem instead of a volume for any reason which cannot be addressed otherwise (eg. Buffalo uses a JFFS2-NAND boot partition in their bootloader which doesn't support UBI at all), please explain and we shall find a solution. Apart from that, just use UBI/NAND support in the way intended (ie. have a plain volume for the kernel) and you won't have any problems, I suppose... Cheers Daniel _______________________________________________ Lede-dev mailing list Lede-dev@lists.infradead.org http://lists.infradead.org/mailman/listinfo/lede-dev
