u-boot.git/include/nand.h, branch v2012.04

nand/fsl_elbc: Convert to self-init

2012-01-26T22:09:06+00:00

This driver doesn't yet make use of the added flexibility (not that that
should stop anyone from converting...), but it will with the in-progress
hack to support 4k-page NAND.

Signed-off-by: Scott Wood

nand: Introduce CONFIG_SYS_NAND_SELF_INIT

2012-01-26T22:09:06+00:00

This allows a driver to run code between nand_scan_ident() and
nand_scan_tail(), among other things.  See the additions to
doc/README.nand for details.

To allow a gradual transition, Boards that don't set
CONFIG_SYS_NAND_SELF_INIT will still be initialized the old way, but
new drivers should not require this, and existing drivers should be
converted when convenient.

Signed-off-by: Scott Wood

nand: Add common functions to linux/mtd/nand.h

2011-12-06T22:59:31+00:00

Functions often used in SPL are now part of linux/mtd/nand.h.
Static modifiers are removed from these functions in
drivers/mtd/nand/nand_base.c.

Signed-off-by: Simon Schwarz 
Cc: scottwood@freescale.com
Cc: s-paulraj@ti.com
Cc: albert.u.boot@aribaud.net
Acked-by: Scott Wood

spl: add NAND Library to new SPL

2011-09-30T20:00:54+00:00

Adds NAND library to SPL.

Signed-off-by: Simon Schwarz 
Acked-by: Scott Wood 
Signed-off-by: Sandeep Paulraj

omap-common: add nand spl support

2011-09-30T20:00:54+00:00

Add NAND support for the new SPL structure.

Signed-off-by: Simon Schwarz 
Signed-off-by: Sandeep Paulraj

nand_util: drop trailing all-0xff pages if requested

2011-07-01T20:56:51+00:00

Add a flag to nand_read_skip_bad() such that if true, any trailing
pages in an eraseblock whose contents are entirely 0xff will be
dropped.

The implementation is via a new drop_ffs() function which is
based on the function of the same name from the ubiformat
utility by Artem Bityutskiy.

This is as-per the reccomendations of the UBI FAQ [1]

[1] http://www.linux-mtd.infradead.org/doc/ubi.html#L_flasher_algo

Signed-off-by: Ben Gardiner 
CC: Artem Bityutskiy 
Acked-by: Detlev Zundel 
CC: Scott Wood 
Signed-off-by: Scott Wood

nand_util: treat WITH_YAFFS_OOB as a mode

2011-07-01T20:56:51+00:00

When specified in the flags argument of nand_write, WITH_YAFFS_OOB causes an
operation which is mutually exclusive with the 'usual' way of writing.

Add a check that client code does not specify WITH_YAFFS_OOB along with any
other flags and add a comment indicating that the WITH_YAFFS_OOB flag should
not be mixed with other flags.

Signed-off-by: Ben Gardiner 
CC: Scott Wood 
Signed-off-by: Scott Wood

nand_util: convert nand_write_skip_bad() to flags

2011-07-01T20:56:51+00:00

In a future commit the behaviour of nand_write_skip_bad()
will be further extended.

Convert the only flag currently passed to the nand_write_
skip_bad() function to a bitfield of only one allocated
member. This should avoid an explosion of int's at the
end of the parameter list or the ambiguous calls like

nand_write_skip_bad(info, offset, len, buf, 0, 1, 1);
nand_write_skip_bad(info, offset, len, buf, 0, 1, 0);

Instead there will be:

nand_write_skip_bad(info, offset, len, buf, WITH_YAFFS_OOB |
			WITH_OTHER);

Signed-off-by: Ben Gardiner 
Acked-by: Detlev Zundel 
Signed-off-by: Scott Wood

NAND: add the ability to directly write yaffs image

2011-01-12T23:13:10+00:00

This patch add addition suffix to nand write to give the uboot
the power to directly burn the yaffs image to nand.

Signed-off-by: Lei Wen

nand erase: .spread, .part, .chip subcommands

2010-10-11T20:10:17+00:00

A while back, in http://lists.denx.de/pipermail/u-boot/2009-June/054428.html,
Michele De Candia posted a patch to not count bad blocks toward the
requested size to be erased.  This is desireable when you're passing in
something like $filesize, but not when you're trying to erase a partition.

Thus, a .spread subcommand (named for consistency with
http://lists.denx.de/pipermail/u-boot/2010-August/075163.html) is introduced
to make explicit the user's desire to erase for a given amount of data,
rather than to erase a specific region of the chip.

While passing $filesize to "nand erase" is useful, accidentally passing
something like $fliesize currently produces quite unpleasant results, as the
variable evaluates to nothing and U-Boot assumes that you want to erase
the entire rest of the chip/partition.  To improve the safety of the
erase command, require the user to make explicit their intentions by
using a .part or .chip subcommand.  This is an incompatible user interface
change, but keeping compatibility would eliminate the safety gain, and IMHO
it's worth it.

While touching nand_erase_opts(), make it accept 64-bit offsets and sizes,
fix the percentage display when erase length is rounded up, eliminate
an inconsistent warning about rounding up the erase length which only
happened when the length was less than one block (rounding up for $filesize
is normal operation), and add a diagnostic if there's an attempt to erase
beginning at a non-block boundary.

Signed-off-by: Scott Wood 
Tested-by: Ben Gardiner