2010/6/23 Scott Wood <scottw...@freescale.com>: > On Wed, Jun 23, 2010 at 02:40:51PM +0200, Arno Steffen wrote: >> A short question to handling of bad blocks: >> My nand shows a few bad blocks (example 100000) >> >> What is happen when I write / read from that block via nand write / read. >> Is content than ok (by mapping good blocks do that address)? > > Bad blocks are skipped, and all subsequent blocks are shifted out by one. > >> Other way around - if I have commands like >> >> "get_kn=nand read.i 0x80000000 c0000 200000" >> >> do I have to care for bad blocks in that range ? >> Di I have to make the part bigger to have some extra blocks, if one is >> skipped while write/read as it is bad? > > The partition must be at least as large as the number of real data blocks > you want to write, plus the number of bad blocks within that range. > > -Scott >
Thanks Scott, does it mean in other words - I don't have to care for the bad block, can write on the bad block address as it would be ok? The only thing I have to care is, that I have leave enough space between the partitions. As for instance : I need 10 blocks for a certain filesystem, give it 12 ? So it could correct 2 bad blocks in this range. Best regards Arno _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
