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 boot from a partition which is mounted writable, and you 14update your boot environment by replacing single files on that 15partition, you should also define CONFIG_SYS_JFFS2_SORT_FRAGMENTS. Scanning 16the JFFS2 filesystem takes *much* longer with this feature, though. 17Sorting is done while inserting into the fragment list, which is 18more or less a bubble sort. That algorithm is known to be O(n^2), 19thus you should really consider if you can avoid it! 20 21 22There only one way for JFFS2 to find the disk. It uses the flash_info 23structure to find the start of a JFFS2 disk (called partition in the code) 24and you can change where the partition is with two defines. 25 26CONFIG_SYS_JFFS2_FIRST_BANK 27 defined the first flash bank to use 28 29CONFIG_SYS_JFFS2_FIRST_SECTOR 30 defines the first sector to use 31--- 32 33TODO. 34 35 Remove the assumption that JFFS can dereference a pointer 36 into the disk. The current code do not work with memory holes 37 or hardware with a sliding window (PCMCIA). 38