We had a problem detecting 8/16bit flash devices connected only via
8bits to the SoC for quite a while. Commit 239cb9d9
[mtd: cfi_flash: Fix CFI flash driver for 8-bit bus support] finally
fixed this 8-bit bus support. But also broke some other boards using
this cfi driver. So this patch had to be reverted.

I spotted a different, simpler approach for this 8-bit bus support
on the barebox mailing list posted by
Oleksij Rempel <bug-track@fisher-privat.net>:

http://www.spinics.net/lists/u-boot-v2/msg14687.html

Here the commit text:

"
Many cfi chips support 16 and 8 bit modes. Most important
difference is use of so called "Q15/A-1" pin. In 16bit mode this
pin is used for data IO. In 8bit mode, it is an address input
which add one more least significant bit (LSB). In this case
we should shift all adresses by one:
For example 0xaa << 1 = 0x154
"

This patch now is a port of this barebox patch to U-Boot.

Along with the change w.r.t from barebox,
Some flash chips can support multiple bus widths, override the
interface width and limit it to the port width.

Tested on 16-bit Spansion flash on sequoia.
Tested 8-bit flashes like 256M29EW, 512M29EW.
Signed-off-by: NStefan Roese <sr@denx.de>
Tested-by: NJagannadha Sutradharudu Teki <jaganna@xilinx.com>
Cc: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Cc: Aaron Williams <awilliams@marvell.com>
Cc: Chandrakala Chavva <cchavva@marvell.com>
Cc: Andre Przywara <andre.przywara@arm.com>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Mario Six <mario.six@gdsys.cc>
Cc: York Sun <york.sun@nxp.com>
Cc: Marek Vasut <marek.vasut+renesas@gmail.com>

Some functions use the wrong code style and generate checkpatch errors.
Fix these.
Signed-off-by: NSimon Glass <sjg@chromium.org>

This function belongs more in flash.h than common.h so move it.

Also remove the space before the bracket in some calls.
Signed-off-by: NSimon Glass <sjg@chromium.org>

This function belongs more in flash.h than common.h so move it.

Also remove the space before the bracket in some calls.
Signed-off-by: NSimon Glass <sjg@chromium.org>

CONFIG_MTD must be reserved for the MTD core. Like any other
subsystem, prefix the symbol by DM when it comes to DM support.
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: NBoris Brezillon <boris.brezillon@bootlin.com>
[trini: Add Kconfig files]
Signed-off-by: NTom Rini <trini@konsulko.com>

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.
Signed-off-by: NTom Rini <trini@konsulko.com>

checkpatch.pl complains about the spelling of ERR_TIMOUT. Since the
error is only used in a handful of files, we rename the error to
ERR_TIMEOUT.
Signed-off-by: NMario Six <mario.six@gdsys.cc>
Signed-off-by: NStefan Roese <sr@denx.de>

The status register is optional in the AMD command sets, but it's
presence can be checked by reading out CFI table entry 0xc bit 0.
If the register is present, prefer using it's bit 7 to determine
if the flash is busy over reading the flash ; this is needed ie.
on Hyperflash memories.
Signed-off-by: NMarek Vasut <marek.vasut+renesas@gmail.com>
Signed-off-by: NStefan Roese <sr@denx.de>

Embed the flash base into struct flash_info instead of having ad-hoc
static array in the code. This does not only remove static variable,
but also allows CFI-like controllers, ie. HyperFlash ones, to use most
of the CFI flash code by populating the flash_info with matching base
address.
Signed-off-by: NMarek Vasut <marek.vasut+renesas@gmail.com>
Signed-off-by: NStefan Roese <sr@denx.de>

Staticize a few functions and variables which are no longer exposed.
Signed-off-by: NMarek Vasut <marek.vasut+renesas@gmail.com>
Cc: Stefan Roese <sr@denx.de>
Signed-off-by: NStefan Roese <sr@denx.de>

A few years ago STM32F1 SoCs support has been added :
0144caf2  gpio: stm32: add stm32f1 support
2d18ef23  ARMv7M: add STM32F1 support

But neither STM32F1 dedicated defconfig nor board was
associated to these commits.

Got confirmation from Tom Rini and Matt Porter to remove
all this code [1]

[1] http://u-boot.10912.n7.nabble.com/Remove-STM32F1-support-td301603.htmlSigned-off-by: NPatrice Chotard <patrice.chotard@st.com>
Reviewed-by: NTom Rini <trini@konsulko.com>

This is defined twice in the same file, with the same value, likely
because of some patch merge issue. Pick the uglier one and nuke it.
Signed-off-by: NMarek Vasut <marek.vasut+renesas@gmail.com>
Cc: Tom Rini <trini@konsulko.com>
Signed-off-by: NStefan Roese <sr@denx.de>

Microchip PIC32 has internal parallel flash (non-CFI compliant).
These flash devices do not support any identifier command so no
standard IDs. Added unique IDs to seperate these flash devices
from others supported by U-Boot.
Signed-off-by: NPurna Chandra Mandal <purna.mandal@microchip.com>

Same flash driver can be used by other stm32 families like stm32f7.
Better place for this driver would be mtd driver location.
Signed-off-by: NVikas Manocha <vikas.manocha@st.com>

Give default CONFIG_SYS_MAX_FLASH_SECT in flash.h, so that
the header can be included regardless of the present of flash.
The value 512 is the most used.
Signed-off-by: NThomas Chou <thomas@wytron.com.tw>
Signed-off-by: NStefan Roese <sr@denx.de>

Implement a Memory Technology Device (MTD) uclass. It should
include most flash drivers in the future. Though no uclass ops
are defined yet, the MTD ops could be used.

The NAND flash driver is based on MTD. The CFI flash and SPI
flash support MTD, too. It should make sense to convert them
to MTD uclass.
Signed-off-by: NThomas Chou <thomas@wytron.com.tw>

Add ARMv7M STM32F1 support including clocks, timer, gpio, and flash.
Signed-off-by: NMatt Porter <mporter@konsulko.com>

Signed-off-by: NKamil Lulko <rev13@wp.pl>
Reviewed-by: NTom Rini <trini@konsulko.com>

The device id makes u-boot think that this chip needs
cfi_reverse_geometry(), which is not the case.
Add it to jedec_flash, so it is handled properly.
Signed-off-by: NDirk Eibach <dirk.eibach@gdsys.cc>
Signed-off-by: NStefan Roese <sr@denx.de>

Signed-off-by: NWolfgang Denk <wd@denx.de>

Signed-off-by: NWolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: NTom Rini <trini@ti.com>

Add support for SST 4KB sector granularity.

Many recent SST flashes, i.e. SST39VF3201B and similar of this family
are declared CFI-conformant from SST. They support CFI query, but implement
2 different sector sizes in the same memory: a 64KB sector (they call it
"block", std AMD erase cmd=0x30), and a 4KB sector (they call it "sector",
erase cmd=0x50). Also, CFI query on these chips, reading from address 0x2dh
of cfi query struct, detects a number of secotrs for the 4KB granularity
(flinfo shows it).

For all other aspects, they are CFI compliant, so, as Linux do, i think
it's a good idea to handle these chips in the CFI driver, with a fixup
to allow 4KB granularity, as should be expected, instead of 64KB.
Signed-off-by: NAngelo Dureghello <sysamfw@gmail.com>
Signed-off-by: NStefan Rose <sr@denx.de>

This stuff has been rotting in the tree for a year now. Remove it.
Signed-off-by: NMarek Vasut <marex@denx.de>

Check for ctrlc() in operations that take time and loop over the flash
addresses.

In netconsole, tstc() is expensive.  Only check once in a while to not
slow down the operation significantly.
Signed-off-by: NJoe Hershberger <joe.hershberger@ni.com>
Signed-off-by: NStefan Roese <sr@denx.de>

commit 54652991
Work around bug in Numonyx P33/P30 256-Mbit 65nm flash chips

fixes a problem for Numonyx P33/P30 flashes for 256-Mbit, but this leads
to problems for smaller versions of this chip e.g. the 32Mbit version
with deviceid 0x16 on mgcoge. So move the code for this work around to
an own function and check previously manufacturer id and device id to
not break other flashes which don't need this work around.
Signed-off-by: NHolger Brunck <holger.brunck@keymile.com>
Signed-off-by: NHeiko Schocher <hs@denx.de>
cc: Stefan Roese <sr@denx.de>
cc: Philippe De Muyter <phdm@macqel.be>
cc: Gerlando Falauto <gerlando.falauto@keymile.com>
Signed-off-by: NStefan Roese <sr@denx.de>

collect code which protects default sectors in a function, called
flash_protect_default. So boardspecific code can call it too.
Signed-off-by: NHeiko Schocher <hs@denx.de>
Signed-off-by: NStefan Roese <sr@denx.de>

This patch simplifies the use of CONFIG_SYS_MAX_FLASH_BANKS_DETECT. By
moving these optional variables and defines into the common code, board
specific code is minimized. Currently only the following board use
this feature:

APC405, IDS8247, TQM834x

And IDS8247 doesn't seem to really need this feature, since its not
updating the bank number variable at all. So this patch removes the
definition of CONFIG_SYS_MAX_FLASH_BANKS_DETECT from this board port.

This new framework will be used by the upcoming lwmon5 update as well.
Signed-off-by: NStefan Roese <sr@denx.de>
Acked-by: NHeiko Schocher <hs@denx.de>
Cc: Matthias Fuchs <matthias.fuchs@esd.eu>

see http://www.jedec.org/download/search/jep106Z.pdf
Add some second source legacy flash chips 256x8.
Signed-off-by: NNiklaus Giger <niklaus.giger@member.fsf.org>
Signed-off-by: NStefan Roese <sr@denx.de>

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: NStefan Roese <sr@denx.de>
Signed-off-by: NAndreas Huber <andreas.huber@keymile.com>

If on your board is more than one flash, you must know
the size of every single flash, for example, for updating
the DTS before booting Linux. So make this function
flash_get_info() extern, and you can have all info
about your flashes.
Signed-off-by: NHeiko Schocher <hs@denx.de>
Signed-off-by: NStefan Roese <sr@denx.de>

include/flash.h was commented to say that the address in
flash_info->start was a physical address.  However, from u-boot's
point of view, and looking at most flash code, it makes more
sense for this to be a virtual address.  So I corrected the
comment to indicate that this was a virtual address.

The only flash driver that was actually treating the address
as physical was the mtd/cfi_flash driver.  However, this code
was using it inconsistently as it actually directly dereferenced
the "start" element, while it used map_physmem to get a
virtual address in other places.  I changed this driver so
that the code which initializes the info->start field calls
map_physmem to get a virtual address, eliminating the need for
further map_physmem calls.  The code is now consistent.

The *only* place a physical address should be used is when defining the
flash banks list that is used to initialize the flash_info struct,
usually found in the board config file.
Signed-off-by: NBecky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: NStefan Roese <sr@denx.de>

Add cfi-mtd driver, which exports CFI flash to MTD layer.
This allows CFI flash devices to be used from MTD layer.

Building of the new driver is controlled by CONFIG_FLASH_CFI_MTD
option. Initialization is done by calling cfi_mtd_init() from
flash_init().
Signed-off-by: NPiotr Ziecik <kosmo@semihalf.com>
Signed-off-by: NStefan Roese <sr@denx.de>

Add interface for flash verbosity control. It allows
to disable output from low-level flash API. It is useful
when calling these low-level functions from context other
than flash commands (for example the MTD/CFI interface
implmentation).
Signed-off-by: NPiotr Ziecik <kosmo@semihalf.com>
Signed-off-by: NStefan Roese <sr@denx.de>

Export flash_sector_size() function from drivers/mtd/cfi_flash.c,
so that it can be used in the upcoming cfi-mtd driver.
Signed-off-by: NPiotr Ziecik <kosmo@semihalf.com>
Signed-off-by: NStefan Roese <sr@denx.de>

Signed-off-by: NJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

The upcoming automatic update feature needs the ability to adjust an
address within Flash to the end of its respective sector. Factor out
this functionality to a new function flash_sect_roundb().
Signed-off-by: NRafal Czubak <rcz@semihalf.com>
Signed-off-by: NBartlomiej Sieka <tur@semihalf.com>
Signed-off-by: NStefan Roese <sr@denx.de>

This commit gets rid of a huge amount of silly white-space issues.
Especially, all sequences of SPACEs followed by TAB characters get
removed (unless they appear in print statements).

Also remove all embedded "vim:" and "vi:" statements which hide
indentation problems.
Signed-off-by: NWolfgang Denk <wd@denx.de>

Fixes non-working CFI Flash on the Inka4x0 board.
Signed-off-by: NBartlomiej Sieka <tur@semihalf.com>

The following patch adds support for non-CFI flash ROMS, by hooking into the
CFI flash code and using most of its code, as recently discussed here in the
thread "Mixing CFI and non-CFI flashs".
Signed-off-by: NMichael Schwingen <michael@schwingen.org>
Signed-off-by: NStefan Roese <sr@denx.de>

Merge to two at45.c files into a common file, split to at45.c and spi.c
Fix spelling error in DM9161 PHY Support.
Initialize at91rm9200 board (and set LED).
Add PIO control for at91rm9200dk LEDs and Mux.
Change dataflash partition boundaries to be compatible with Linux 2.6.
Signed-off-by: NPeter Pearse <peter.pearse@arm.com>
Signed-off-by: NUlf Samuelsson <ulf@atmel.com>