Hello, I tried to use SHR the ubi images on my freerunner, but they did not work. Does someone know the parameters which are passed to mkfs.ubifs? I think that the ubi fileystem is created for NAND flashes with subpage support, but this feature does not work on the freerunner. Passing -s 2048 should create a working image (but I did not verify this yet).
Using the ubi filesystem on the freerunner is not an easy task. A ubi image can't be flashed using nandwrite. I'm not sure about dfu-util, but probably it uses the same technique as nandwrite and therefore won't work too. I did a manual installation (untar SHR into a mounted ubifs) using archmobile installed on SD. If the SHR ubi image is created with the right parameters ubiformat or ubiupdatevol could be used to install the image. For a easy installation with dfu-util, u-boot would need support for ubi images. I used the newest kernel (om-gta02-2.6.32), but a older one should work too. Step-by-step, I did: - Prepare a SD card with archmobile. Any distro should work as long as it provides the mtd-utils package (ubiattach, ubimkvol, ..) - Copy the kernel to the SD-Card. I used the same kernel to create the ubi filesystem which will be used to run shr. This should not be necessary, but YMMV. - Boot from SD - ubiattach /dev/ubi_ctrl -m 6 -O 2048 If this does not work, try to run ubiformat /dev/mtd6 -s 2048 -O 2048 first. If this fails too, erase the flash with flash_eraseall /dev/mtd6. Now ubiattach should succeed. - ubimkvol /dev/ubi0 -N rootfs -m - mount -t ubifs ubi0:rootfs /mnt - tar -xzf <shr-rootfs.tar.gz> -C /mnt - umount /mnt - ubidetach /dev/ubi_ctrl -m6 If everything worked you end up with a ubifs containing SHR, but it won't boot. ;) To fix this, we need to tell the kernel that the mtd partition 6 contains a ubi volume which contains the ubifs rootfs: rootfstype=ubifs ubi.mtd=6,2048 root=ubi0:rootfs. For a "normal" boot qi passes rootfstype=jffs2 root=/dev/mtdblock6 to the kernel. Just changing the boot params within the kernel configuration does not work. Therefore I patched qi :) - Download a git snapshot and modify src/cpu/s3c2442/gta02.c. The interesting lines are at the bottom of the file. - Compile: make CPU=s3c2442 - Flash: dfu-util -a u-boot -R -D image/qi-s3c2442-master_*.udfu Do not forget to flash the kernel, if needed. Reboot. Good luck! Christoph P.S. My SHR is not working yet. There are some issues with kernel 2.6.32, but that's a different story. _______________________________________________ Shr-User mailing list Shr-User@lists.shr-project.org http://lists.shr-project.org/mailman/listinfo/shr-user