11590Srgrimesconfig FS_JFFS2 21590Srgrimes bool "Enable JFFS2 filesystem support" 31590Srgrimes help 41590Srgrimes This provides support for reading images from JFFS2 (Journalling 51590Srgrimes Flash File System version 2). JFFS2 is a log-structured file system 61590Srgrimes for use with flash memory devices. It supports raw NAND devices, 71590Srgrimes hard links and compression. 81590Srgrimes 91590Srgrimesconfig JFFS2_LZO 101590Srgrimes bool "Enable LZO compression in JFFS2" 111590Srgrimes depends on FS_JFFS2 121590Srgrimes help 131590Srgrimes Enable LZO compression in the JFFS2 filesystem 141590Srgrimes 151590Srgrimesconfig JFFS2_NAND 161590Srgrimes bool "Enable JFFS2 support for NAND flash" 171590Srgrimes depends on FS_JFFS2 181590Srgrimes help 191590Srgrimes Enable support for NAND flash as the backing store for JFFS2. 201590Srgrimes 211590Srgrimesconfig SYS_JFFS2_SORT_FRAGMENTS 221590Srgrimes bool "Enable JFFS2 sorting of filesystem fragments (SLOW!)" 231590Srgrimes depends on FS_JFFS2 241590Srgrimes help 251590Srgrimes If you boot from a partition which is mounted writable, and you 261590Srgrimes update your boot environment by replacing single files on that 271590Srgrimes partition, you should also define CONFIG_SYS_JFFS2_SORT_FRAGMENTS. 281590Srgrimes Scanning the JFFS2 filesystem takes *much* longer with this feature, 291590Srgrimes though. Sorting is done while inserting into the fragment list, 3050477Speter which is more or less a bubble sort. That algorithm is known to be 3116853Swosch O(n^2), thus you should really consider if you can avoid it! 32165193Sru