On Sat, Aug 17, 2013 at 05:43:56PM +0200, richard -rw- weinberger wrote: > On Sat, Aug 17, 2013 at 2:37 PM, Woody Wu <narkewoody@xxxxxxxxx> wrote: > > On Sat, Aug 17, 2013 at 12:58:41PM +0200, richard -rw- weinberger wrote: > >> On Sat, Aug 17, 2013 at 10:28 AM, Woody Wu <narkewoody@xxxxxxxxx> wrote: > >> > Hi, > >> > > >> > Does Yaffs2 file system has its own capabilities to do ECC? My NAND > >> > driver for some reason cannot enable ECC yet. Also I want to ask the > >> > same question to Jffs2. > >> > >> The Linux MTD subsystem is able to do software ECC. > >> > > By far, I cannot enable any kind of ECC from MTD yet, since my u-boot > > has some problem cannot do correct ECC and my root file system image is > > flashed by u-boot. If I enabled ECC from MTD, my root file system cannot > > mount. > > Then fix your uboot. Or at least hire someone to do so. > Otherwise you *will* encounter massive problems. > > > Do you know whethe Yaffs2/Jffs2 has their own build-in ECC function? > > Googled this but not get clear answer. > > IIRC yaffs2 has it's own ECC stuff. It writes into the spare area which is > a no-go and one of the reasons why it's not mainline. > > -- > Thanks, > //richard Just report back the list: I've managed to mount root from NFS, by which I can use pure Linux way to prepare my root filesystems to yaffs2 and enable HW ECC in MTD layer only. Then I can ignore the mismatch between u-boot and kernel in the ways they handing NAND OOB area. Thanks. -- I can't go back to yesterday - because I was a different person then _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
