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authorAndrew Victor <andrew@sanpeople.com>2005-02-09 10:17:45 +0100
committerThomas Gleixner <tglx@mtd.linutronix.de>2005-05-23 12:28:03 +0200
commit8f15fd55f9bf266139b10850947e19c4e3f4e9b7 (patch)
tree3df936efbffbbd6c20dd75f51780ac37458285ff /fs/Kconfig
parent[JFFS2] Core changes required to support JFFS2-on-Dataflash devices. (diff)
downloadlinux-8f15fd55f9bf266139b10850947e19c4e3f4e9b7.tar.xz
linux-8f15fd55f9bf266139b10850947e19c4e3f4e9b7.zip
[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>
Diffstat (limited to 'fs/Kconfig')
-rw-r--r--fs/Kconfig7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/Kconfig b/fs/Kconfig
index 6a4ad4bb7a54..07835d24c785 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -1084,6 +1084,13 @@ config JFFS2_FS_NOR_ECC
ECC for JFFS2. This type of flash chip is not common, however it is
available from ST Microelectronics.
+config JFFS2_FS_DATAFLASH
+ bool "JFFS2 support for DataFlash (EXPERIMENTAL)"
+ depends on JFFS2_FS && EXPERIMENTAL
+ default n
+ help
+ This enables the experimental support for JFFS2 on DataFlash devices.
+
config JFFS2_COMPRESSION_OPTIONS
bool "Advanced compression options for JFFS2"
depends on JFFS2_FS