u-boot.git/drivers/mtd, branch v2009.06

Redundant Environment: protect full sector size

2009-06-03T22:16:16+00:00

Several boards used different ways to specify the size of the
protected area when enabling flash write protection for the sectors
holding the environment variables: some used CONFIG_ENV_SIZE and
CONFIG_ENV_SIZE_REDUND, some used CONFIG_ENV_SECT_SIZE, and some even
a mix of both for the "normal" and the "redundant" areas.

Normally, this makes no difference at all. However, things are
different when you have to deal with boards that can come with
different types of flash chips, which may have different sector
sizes.

Here we may have to chose CONFIG_ENV_SECT_SIZE such that it fits the
biggest sector size, which may include several sectors on boards using
the smaller sector flash types. In such a case, using CONFIG_ENV_SIZE
or CONFIG_ENV_SIZE_REDUND to enable the protection may lead to the
case that only the first of these sectors get protected, while the
following ones aren't.

This is no real problem, but it can be confusing for the user -
especially on boards that use CONFIG_ENV_SECT_SIZE to protect the
"normal" areas, while using CONFIG_ENV_SIZE_REDUND for the
"redundant" area.

To avoid such inconsistencies, I changed all sucn boards that I found
to consistently use CONFIG_ENV_SECT_SIZE for protection. This should
not cause any functional changes to the code.

Signed-off-by: Wolfgang Denk 
Cc: Paul Ruhland
Cc: Pantelis Antoniou 
Cc: Stefan Roese 
Cc: Gary Jennejohn 
Cc: Dave Ellis 
Acked-by: Stefan Roese

cfi_mtd: Fix bug in last sector detection

2009-06-03T21:45:27+00:00

This patch now enabled this cfi-mtd wrapper to correctly detect and
erase the last sector in an NOR FLASH device.

Signed-off-by: Stefan Roese

nand: Fix problem with ECC ordering for PPC4xx NDFC platforms

2009-05-23T10:51:39+00:00

This patch enables Smart Media (SMC) ECC byte ordering which is used
on the PPC4xx NAND FLASH controller (NDFC). Without this patch we have
incompatible ECC byte ordering to the Linux kernel NDFC driver.

Signed-off-by: Stefan Roese 
Acked-by: Scott Wood

MTD: Change cfi-mtd to accept non-uniform sector sizes

2009-04-29T09:06:06+00:00

With this patch non-uniform NOR FLASH chips (chips with multiple erase
regions) can be exported via the cfi-mtd layer and therefor used by UBI.
We select the largest sector size as erasesize. The cfi driver will make
sure that the smaller sectors are handled correctly.

Signed-off-by: Stefan Roese

mtd: nand/onenand: Register mtd device upon device scanning

2009-04-27T23:15:38+00:00

With this patch the NAND and OneNAND devices are registered in the MTD
subsystem and can then be referenced by the mtdcore code (e.g.
get_mtd_device_nm()). This is needed for the new "ubi part" command
syntax without the flash type parameter (nor|nand|onenand).

Signed-off-by: Stefan Roese

mtd: nand: Include linux/mtd/partitions.h in nand_base.h

2009-04-27T23:15:37+00:00

This patch removes this compilation warning when CONFIG_MTD_PARTITIONS is
defined:

nand_base.c: In function 'nand_release':
nand_base.c:2922: warning: implicit declaration of function 'del_mtd_partitions'

Signed-off-by: Stefan Roese

CMD_UBI != MTD_PARTITIONS

2009-04-16T21:03:27+00:00

Fix dependency goofage:  it should certainly be possible to have the
partition support without bringing in UBI commands.

Signed-off-by: David Brownell 
Acked-by: Stefan Roese

Blackfin: nand: flush peripheral before polling it

2009-04-06T21:37:37+00:00

We need to make sure the data written to the nand flash controller makes
it there before we start polling its status register.  Otherwise, we may
get stale data and return before the controller is actually ready.

Signed-off-by: Graf Yang 
Signed-off-by: Mike Frysinger 
Acked-by: Scott Wood

UBI/cfi-mtd: Fix mtd name for multiple chips

2009-04-04T21:25:40+00:00

On platforms with multiple NOR chips, currently only the first one
can be selected using the "ubi part" command. This patch fixes this
problem by using different names for the NOR "mtd devices".

It also changes the name of the NOR MTD device from "cfi-mtd" to
"norX" (X indexing the device numer) to better match the mtdparts
defaults.

Signed-off-by: Stefan Roese 
Signed-off-by: Andreas Huber

Add support for the AT91RM9200EK Board.

2009-04-04T18:42:20+00:00

The AT91RM9200-EK Evaluation Board supports the AT91RM9200
ARM9-based 32-bit RISC microcontroller and enables real-time code development
and evaluation.

Here is the chip page on Atmel website:
http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3507

with
	- NOR (cfi driver)
	- DataFlash
	- USB OHCI
	- Net
	- I2C (hard)

Signed-off-by: Ulf Samuelsson 
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD