1JFFS2 options and usage. 2----------------------- 3 4JFFS2 in U-Boot is a read only implementation of the file system in 5Linux with the same name. To use JFFS2 define CONFIG_CMD_JFFS2. 6 7The module adds three new commands. 8fsload - load binary file from a file system image 9fsinfo - print information about file systems 10ls - list files in a directory 11chpart - change active partition 12 13If you do now need the commands, you can enable the filesystem separately 14with CONFIG_FS_JFFS2 and call the jffs2 functions yourself. 15 16If you boot from a partition which is mounted writable, and you 17update your boot environment by replacing single files on that 18partition, you should also define CONFIG_SYS_JFFS2_SORT_FRAGMENTS. Scanning 19the JFFS2 filesystem takes *much* longer with this feature, though. 20Sorting is done while inserting into the fragment list, which is 21more or less a bubble sort. That algorithm is known to be O(n^2), 22thus you should really consider if you can avoid it! 23 24 25There only one way for JFFS2 to find the disk. It uses the flash_info 26structure to find the start of a JFFS2 disk (called partition in the code) 27and you can change where the partition is with two defines. 28 29CONFIG_SYS_JFFS2_FIRST_BANK 30 defined the first flash bank to use 31 32CONFIG_SYS_JFFS2_FIRST_SECTOR 33 defines the first sector to use 34--- 35 36TODO. 37 38 Remove the assumption that JFFS can dereference a pointer 39 into the disk. The current code do not work with memory holes 40 or hardware with a sliding window (PCMCIA). 41