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nand: yaffs: Remove the "nand write.yaffs" command

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This command is only enabled by one board, complicates the NAND code,
and doesn't appear to have been functioning properly for several
years.  If there are no bad blocks in the NAND region being written
nand_write_skip_bad() will take the shortcut of calling nand_write()
which bypasses the special yaffs handling.  This causes invalid YAFFS
data to be written. See
http://lists.denx.de/pipermail/u-boot/2011-September/102830.html for
an example and a potential workaround.

U-Boot still retains the ability to mount and access YAFFS partitions
via CONFIG_YAFFS2.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
This commit is contained in:
Peter Tyser 2015-02-03 11:58:16 -06:00 • committed by Scott Wood
parent 073adf987e
commit 004a1fdb45
5 changed files with 14 additions and 87 deletions
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7
include/nand.h
View file

@ -104,11 +104,8 @@ typedef struct nand_erase_options nand_erase_options_t;
int nand_read_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
size_t *actual, loff_t lim, u_char *buffer);
#define WITH_YAFFS_OOB (1 << 0) /* whether write with yaffs format. This flag
* is a 'mode' meaning it cannot be mixed with
* other flags */
#define WITH_DROP_FFS (1 << 1) /* drop trailing all-0xff pages */
#define WITH_WR_VERIFY (1 << 2) /* verify data was written correctly */
#define WITH_DROP_FFS (1 << 0) /* drop trailing all-0xff pages */
#define WITH_WR_VERIFY (1 << 1) /* verify data was written correctly */
int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
size_t *actual, loff_t lim, u_char *buffer, int flags);