lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[JFFS2] Add support for JFFS2-on-Dataflash devices.

Browse Source 
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>
This commit is contained in:
Andrew Victor
2005-02-09 09:17:45 +00:00
committed by Thomas Gleixner
parent 3be36675d4
commit 8f15fd55f9
9 changed files with 98 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
include/mtd/mtd-abi.h
View File

@ -1,5 +1,5 @@
/*
* $Id: mtd-abi.h,v 1.9 2005/02/08 17:45:52 nico Exp $
* $Id: mtd-abi.h,v 1.10 2005/02/09 09:17:42 pavlov Exp $
*
* Portions of MTD ABI definition which are shared by kernel and user space
*/
@ -29,6 +29,7 @@ struct mtd_oob_buf {
#define MTD_NORFLASH 3
#define MTD_NANDFLASH 4
#define MTD_PEROM 5
#define MTD_DATAFLASH 6
#define MTD_OTHER 14
#define MTD_UNKNOWN 15