This reworks the XIP locking to make sure no lock primitive is ever
called from XIP disabled paths even if in theory they should not
cause any reschedule.  Relying on the current spinlock implementation
is rather fragile and not especially clean from an abstraction pov.
The recent RT work makes it even more obvious.
Signed-off-by: NNicolas Pitre <nico@cam.org>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

adjust chip-relative offsets to
block address, write to block address + 2 per recent datasheets.
Signed-off-by: NTodd Poynor <tpoynor@mvista.com>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

- Lindent
- Removal of slram/phram functionality
- Removal of most #ifdefs
Signed-off-by: NJoern Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Reverting the change from 1.136 to 1.137 (back to static allocation of ecc
arrays) due to stack corruption and ecc errors.
Signed-off-by: NJarkko Lavinen <jarkko.lavinen@nokia.com>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Add helpful comment about oobfree so I can't claim two years from 
now that I don't remember what I was thinking.
Signed-off-by: NDan Brown <dan_brown@ieee.org>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Signed-off-by: NDan Brown <dan_brown@ieee.org>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Try not to break existing jffs2 installs, instead break oobfree into 
two out-of-order pieces.
Signed-off-by: NDan Brown <dan_brown@ieee.org>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Signed-off-by: NDan Brown <dan_brown@ieee.org>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

I really hope this doesn't break something.
Signed-off-by: NDan Brown <dan_brown@ieee.org>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Version 1.137 broke nand_read_ecc clients who pass NULL oobsel.  Fixed.
Signed-off-by: NDan Brown <dan_brown@ieee.org>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Signed-off-by: NNicolas Pitre <nico@cam.org>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Signed-off-by: NNicolas Pitre <nico@cam.org>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Use oobfree to calculate the number of oob bytes available for fs usage
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

to make sure the flash is in array mode whenever we're about to
reboot. This is especially useful to allow "soft" reboot to work
which consists of branching back into the bootloader.
Signed-off-by: NNicolas Pitre <nico@cam.org>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Signed-off-by: NTodd Poynor <tpoynor@mvista.com>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Skip jiffy delay after each block lock/unlock for Intel CFI flash
with the "Instant Individual Block Locking" feature bit set.
Signed-off-by: NTodd Poynor <tpoynor@mvista.com>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Add a new module param, show_firmware_partition.
Signed-off-by: NDan Brown <dan_brown@ieee.org>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Signed-off-by: NArtem B. Bityuckiy <dedekind@infradead.org>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Signed-off-by: NRichard Purdie <rpurdie@rpsys.net>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Signed-off-by: NRichard Purdie <rpurdie@rpsys.net>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Use memset instead of ARM only memzero function
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Use the new NAND_SKIP_BBT option instead of defining a fake scan_bbt
handler.
Signed-off-by: NArtem B. Bityuckiy <dedekind@infradead.org>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Setting the slowport to 8-bit mode is something that ought to be
done in the IXP2000 generic code, not in the MTD map driver.  See
the description for ARM patch 2493/1 for an explanation.

http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=2493/1

Now that 2493/1 has been accepted and will be upstream soon, this
doesn't need to be done in the map driver anymore.
Signed-off-by: NLennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Signed-off-by: NDomen Puncer <domen@coderock.org>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Updated with tglx's suggestion to simply the command invocation by
simply changing the address of the IO write area
Signed-off-by: NBen Dooks <ben@simtec.co.uk>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

oldstate has to be reset to FL_READY after sync completion.
Signed-off-by: NNicolas Pitre <nico@cam.org>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

The change makes the code endianess aware and replaces the bogus 
nested loop to or the status flags together.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

removed define of DEBUG
removed extraneous debugging code
Signed-off-by: NBen Dooks <ben@simtec.co.uk>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Signed-off-by: NBen Dooks <ben@simtec.co.uk>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Jffs2 apparently needs this.
Accept newline at the end of input.
Signed-off-by: NJoern Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

- Remove Gareth from the Copyrights (at his own request)
- Fix the "fscking embarrassment"
Signed-off-by: NJoern Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Remove support for the Arcom Elan-104NC since it's no longer being maintained.
Signed-off-by: NDavid Vrabel <dvrabel@arcom.com>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Replace msleep by cond_resched. On machines with HZ=100 (e.g. ARM)
msleep slows down the operation by factor 10
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

This driver does not have as many options but it's easier to maintain.
And, it turns out AMD never shipped boards with different flash densities.
Signed-off-by: NPete Popov <ppopov@pacbell.net>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Signed-off-by: NAlexander Nyberg <alexn@dsv.su.se>
Signed-off-by: NJoern Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>