| commit | 8f15fd55f9bf266139b10850947e19c4e3f4e9b7 | |
| author | Andrew Victor <andrew@sanpeople.com> | |
| Wed, 9 Feb 2005 09:17:45 +0000 (9 09:17 +0000) | ||
| committer | Thomas Gleixner <tglx@mtd.linutronix.de> | |
| Mon, 23 May 2005 10:28:03 +0000 (23 12:28 +0200) | ||
| tree | 3df936efbffbbd6c20dd75f51780ac37458285ff | treesnapshot (tar.gz zip) |
| parent | 3be36675d41a30ed3b192f92684f1417aa0f8bfe | commitdiff |
[JFFS2] Add support for JFFS2-on-Dataflash devices.
For Dataflash, can_mark_obsolete = false and the NAND write buffering
code (wbuf.c) is used.
Since the DataFlash chip will automatically erase pages when writing,
the cleanmarkers are not needed - so cleanmarker_oob = false and
cleanmarker_size = 0
DataFlash page-sizes are not a power of two (they're multiples of 528
bytes). The SECTOR_ADDR macro (added in the previous core patch) is
replaced with a (slower) div/mod version if CONFIG_JFFS2_FS_DATAFLASH is
selected.
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
For Dataflash, can_mark_obsolete = false and the NAND write buffering
code (wbuf.c) is used.
Since the DataFlash chip will automatically erase pages when writing,
the cleanmarkers are not needed - so cleanmarker_oob = false and
cleanmarker_size = 0
DataFlash page-sizes are not a power of two (they're multiples of 528
bytes). The SECTOR_ADDR macro (added in the previous core patch) is
replaced with a (slower) div/mod version if CONFIG_JFFS2_FS_DATAFLASH is
selected.
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>