On Mon, Jan 04, 2010 at 02:37:14PM +0100, Christoph Mair wrote: > Quote from http://www.linux-mtd.infradead.org/doc/ubi.html#L_subpage: > "Indeed, let's consider a NAND flash with 128KiB eraseblocks and 2048-byte > pages. If it does not have sub-pages, UBI puts the the VID header at physical > offset 2048, so LEB size becomes 124KiB (128KiB minus one NAND page which > stores the EC header and minus another NAND page which stores the VID header." > > Therefore the params should be: > MKUBIFS_ARGS = "-m 2048 -e 126976 -c 2047"
Yeah, I notided the same yesterday in failing mount command (it said that superblock is wrong because of having wrong leb size, so updated it locally too). > With these parameters, I successfully wrote a ubifs image to a ubi volume: > flash_eraseall /dev/mtd6 > ubiattach /dev/ubi_ctrl -m6 -O 2048 > ubimkvol /dev/ubi0 -m -Nrootfs > ubiupdatevol /dev/ubi0_0 test.ubifs > mount -t ubifs ubi0_0 /mnt/ > > The first step (flash_eraseall) is optional and only needed if ubiattach > fails. I it "worked" for me too with just flash_eraseall /dev/mtd6 nandwrite /dev/mtd6 shr-full-eglibc-ipk--20100103-om-gta02.rootfs.ubi but first attempt it worked with only IO errors about few unreadable PEBs. After reboot mount always failed after about a minute with "Segmentation fault" and once with kernel panic - with 2.6.32.2. > IMHO the ubinize params should be > UBINIZE_ARGS = "-m 2048 -p 128KiB -s 2048" I also had -O 2048 there.. > but until now I did not get this to work. I can write the image (sometimes it > needs a few tries) but mount does not work. As said above for me it worked just once after nandwrite. :/ Cheers, -- uin:136542059 jid:[email protected] Jansa Martin sip:[email protected] JaMa _______________________________________________ Openmoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
