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- JFFS2 options and usage.
- JFFS2 in U-Boot is a read only implementation of the file system in
- Linux with the same name. To use JFFS2 define CONFIG_CMD_JFFS2.
- The module adds three new commands.
- fsload - load binary file from a file system image
- fsinfo - print information about file systems
- ls - list files in a directory
- chpart - change active partition
- If you boot from a partition which is mounted writable, and you
- update your boot environment by replacing single files on that
- partition, you should also define CONFIG_SYS_JFFS2_SORT_FRAGMENTS. Scanning
- the JFFS2 filesystem takes *much* longer with this feature, though.
- Sorting is done while inserting into the fragment list, which is
- more or less a bubble sort. That algorithm is known to be O(n^2),
- thus you should really consider if you can avoid it!
- There only one way for JFFS2 to find the disk. It uses the flash_info
- structure to find the start of a JFFS2 disk (called partition in the code)
- and you can change where the partition is with two defines.
- CONFIG_SYS_JFFS2_FIRST_BANK
- defined the first flash bank to use
- CONFIG_SYS_JFFS2_FIRST_SECTOR
- defines the first sector to use
- TODO.
- Remove the assumption that JFFS can dereference a pointer
- into the disk. The current code do not work with memory holes
- or hardware with a sliding window (PCMCIA).
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