Jon Povey a écrit : > linux-mtd-bounces@xxxxxxxxxxxxxxxxxxx wrote: >> I want to be able to use 1-bit ECC for the first partition where I >> save the loader binary and has to be accessed by the ROM boot but use >> a 4-bit ECC for my rootfs partition. >> >> Does anyone have this same issue? > > DM355 and DM365 has similar issues as the RBL expects a different OOB/ECC > layout to Linux. > >> What is the best approach to store data in a NAND device using >> different ECC techniques? > > What I have done is write a utility that calculates ECC and writes to > the mtd device in RAW mode. So to rewrite the bootloader I take care of > the ECC and layout at application level without changing the kernel. > Note that the kernel raw mode doesn't write the page in one time : it write data and then ecc. This may cause problem with NOP1 nand. see http://lists.infradead.org/pipermail/linux-mtd/2010-August/031262.html Matthieu -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
