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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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This updates the Primary Vendor-Specific Extended Query parsing to
version 1.4 in order to get the information about the Configurable
Programming Mode regions implemented in the Sibley flash, as well as
selecting the appropriate write command code.
This flash does not behave like traditional NOR flash when writing data.
While mtdblock should just work, further changes are needed for JFFS2 use.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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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>
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This is implemented using a ioctl to switch the MTD char device into
one of the different OTP "modes", at which point read/write/seek can
operate on the selected OTP area. Also some extra ioctls to query
for size and lock protection segments or groups. Some example user
space utilities are provided.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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This enables support for reading, writing and locking so called
"Protection Registers" present on some flash chips.
A subset of them are pre-programmed at the factory with a
unique set of values. The rest is user-programmable.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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In order to keep the RAM usage down with large devices and smaller
erase block sizes, we were using blocks in JFFS2 larger than the
physical erase size. This means that bad blocks lose a lot more space
though; allow it to be disabled.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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Signed-Off-By: David Woodhouse <dwmw2@infradead.org>
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all sorts of minor stuff - basically, all chunks are independent here,
but IMO that one is not worth splitting. Contains:
* pmac_cpufreq.c: declaration in the middle of a block.
* sys_ia32.c: couple of trivial annotations.
* ipmi_si_intf.c: should be using asm/irq.h instead of linux/irq.h
* synclink_cs.c: assignment-in-conditional with nobody ever looking
at the variable we are assigning to afterwards; variable removed.
* sbni.c: s/__volatile/__volatile__
* matroxfb_base.h: got rid of ((u32 *)p)++
* asm-ppc/checksum.h and asm-sparc64/floppy.h: NULL noise removal
* amd64 compat.h: missing L in long constant.
* mtd-abi.h: annotated ioctl structure
* sysctl.c: corrected annotations in extern
Signed-off-by: Al Viro <viro@parcelfarce.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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- Move user-visible bits from headers to include/mtd/ directory.
- Update old DiskOnChip drivers for newer hardware.
- Switch NFTL and INFTL support to work with new DiskOnChip/NAND code.
- New phram driver, reimplenting the ugly slram driver.
- Bug fixes in partitioning code
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