Fastest read command code look for fastest read command
taking inputs from spi->mode_rx and flags from param table
and controller mode_rx is always been a priority.
Since mode_rx is always set from controller side this optimized
code doesn't require much and this code required exctra overhead like
1) Maintain e_rx_cmd in param table
2) Maintain mode_rx in spi_slave {}
Hence removed this code, and look for read command from normal
spi->mode from spi_slave{} and params->flags
Cc: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Cc: Vignesh R <vigneshr@ti.com>
Cc: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
This commit adds support in the spi-nor driver for the
N25Q016A, a 16Mbit SPI NOR flash from Micron.
Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
Reviewed-by: Jagan Teki <jteki@openedev.com>
Allwinner devices support SPI flash as one of the possible
bootable media type. The SPI flash chip needs to be connected
to SPI0 pins (port C) to make this work. More information is
available at:
https://linux-sunxi.org/Bootable_SPI_flash
This patch adds the initial support for booting from SPI flash.
The existing SPI frameworks are not used in order to reduce the
SPL code size. Right now the SPL size grows by ~370 bytes when
CONFIG_SPL_SPI_SUNXI option is enabled.
While there are no popular Allwinner devices with SPI flash at
the moment, testing can be done using a SPI flash module (it
can be bought for ~2$ on ebay) and jumper wires with the boards,
which expose relevant pins on the expansion header. The SPI flash
chips themselves are very cheap (some prices are even listed as
low as 4 cents) and should not cost much if somebody decides to
design a development board with an SPI flash chip soldered on
the PCB.
Another nice feature of the SPI flash is that it can be safely
accessed in a device-independent way (since we know that the
boot ROM is already probing these pins during the boot time).
And if, for example, Olimex boards opted to use SPI flash instead
of EEPROM, then they would have been able to have U-Boot installed
in the SPI flash now and boot the rest of the system from the SATA
hard drive. Hopefully we may see new interesting Allwinner based
development boards in the future, now that the software support
for the SPI flash is in a better shape :-)
Testing can be done by enabling the CONFIG_SPL_SPI_SUNXI option
in a board defconfig, then building U-Boot and finally flashing
the resulting u-boot-sunxi-with-spl.bin binary over USB OTG with
a help of the sunxi-fel tool:
sunxi-fel spiflash-write 0 u-boot-sunxi-with-spl.bin
The device needs to be switched into FEL (USB recovery) mode first.
The most suitable boards for testing are Orange Pi PC and Pine64.
Because these boards are cheap, have no built-in NAND/eMMC and
expose SPI0 pins on the Raspberry Pi compatible expansion header.
The A13-OLinuXino-Micro board also can be used.
Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Serial number, vendor id and page size are added for QSPI flash
common on both LS1012AQDS and LS1012ARDB i.e. S25FS512SDSMFI011.
Signed-off-by: Pratiyush Mohan Srivastava <pratiyush.srivastava@nxp.com>
Signed-off-by: Calvin Johnson <calvin.johnson@nxp.com>
Signed-off-by: Mingkai Hu <mingkai.hu@nxp.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
Detect a FIT when loading from SPI and handle it using the
new FIT SPL support.
Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
The S25FS-S family physical sectors may be configured as a hybrid
combination of eight 4-kB parameter sectors at the top or bottom
of the address space with all but one of the remaining sectors
being uniform size.
The default status of the flash is in this hybrid architecture.
The parameter sectors and the uniform sectors have different erase
commands.
This patch disable the hybrid sector architecture then the flash will
has uniform sector size and uniform erase command.
This configuration is temporary, the flash will revert to hybrid
architecture after power on reset.
Signed-off-by: Yuan Yao <yao.yuan@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
The flash type of LS2085AQDS QSPI is S25FS256S. It has special write
any device register command and read any device register command.
This patch enable support for those commands.
Signed-off-by: Yuan Yao <yao.yuan@nxp.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <york.sun@nxp.com>
Allow the spl_parse_image_header() to return value. This is convenient
for controlling the SPL boot flow if the loaded image is corrupted.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Peng Fan <van.freenix@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Tom Rini <trini@konsulko.com>
get_timer() returns an unsigned 64-bit value, but is currently assigned to
a signed 32-bit variable. Due to sign extension and data truncation, this
causes the timeout loop in spi_flash_cmd_wait_ready() to immediately (and
incorrectly) fire for about 50% of all time values, based on whether bit
31 is set. In sandbox at least, this causes the test to pass or fail based
on system uptime, as opposed to time since the U-Boot binary was started.
Fixes: 4efad20a17 ("sf: Update status reg check in spi_flash_cmd_wait_ready")
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Jagan Teki <jteki@openedev.com>
The stm_is_locked_sr() function is picked from Linux kernel. For reason
unknown, the 64bit data types used by the function and present in Linux
were replaced with 32bit unsigned ones, which causes trouble.
The testcase performed was done using ST M25P80 chip.
The command used was:
=> sf protect unlock 0 0x10000
The call chain starts in stm_unlock(), which calls stm_is_locked_sr()
with negative ofs argument. This works fine in Linux, where the "ofs"
is loff_t, which is signed long long, while this fails in U-Boot, where
"ofs" is u32 (unsigned int). Because of this signedness problem, the
expression past the return statement to be incorrectly evaluated to 1,
which in turn propagates back to stm_unlock() and results in -EINVAL.
The correction is very simple, just use the correctly sized data types
with correct signedness in the function to make it work as intended.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagan Teki <jteki@openedev.com>
When an error number is provided we should use it, not change it. This fixes
the SPI and SPI flash tests.
One of these is long-standing. The other seems to have been introduced by
commit 1e90d9fd (sf: Move read_id code to sf_ops).
Signed-off-by: Simon Glass <sjg@chromium.org>
Fixes: 1e90d9fd (sf: Move read_id code to sf_ops)
Reviewed-by: Jagan Teki <jteki@openedev.com>
Tested-by: Jagan Teki <jteki@openedev.com>
We must not free data that is managed by driver mode. Remove this line,
which is a hangover from the pre-driver-model code.
This fixes a problem where 'sf probe' crashes U-Boot if the backing file
for the SPI flash cannot be found.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagan Teki <jteki@openedev.com>
Tested-by: Jagan Teki <jteki@openedev.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Add a little more debugging to help when things go wrong.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagan Teki <jteki@openedev.com>
Tested-by: Jagan Teki <jteki@openedev.com>
Add dma memcpy api to the default spi_flash_copy_mmap(), so that
dma will be used to copy data when CONFIG_DMA is defined for the
platform.
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagan Teki <jteki@openedev.com>
This function currently searches the entire device tree for a node that
it thinks is relevant. But the node is known and is passed in. Correct the
code and enable it only with driver model, since only driver-model boards
will use it.
This avoids bringing in a large number of strings from fdtdec.
Signed-off-by: Simon Glass <sjg@chromium.org>
For SPL we don't really need sprintf() and with tiny-printf this is not
available. Allow this to be dropped in SPL when using tiny-printf.
Signed-off-by: Simon Glass <sjg@chromium.org>
Since spi rx mode macro's are renamed to simple and
meaninfull, this patch will rename the respective
structure members.
Cc: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Tested-by: Mugunthan V N <mugunthanvnm@ti.com>
Tested-by: Jagan Teki <jteki@openedev.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
While setting quad bit on spansion, macronix code
is writing only particular quad bit this may give
wrong functionality with other register bits,
So this patch fix the issue where it with write
previous read reg status along particular quad bit.
Cc: Vignesh R <vigneshr@ti.com>
Cc: Mugunthan V N <mugunthanvnm@ti.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
One macronix quad bit set using SR, it's good to
read back and check the written bit and also if
it's already been set check for the bit and return.
Cc: Vignesh R <vigneshr@ti.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
One spansion quad bit set using CR, it's good to
read back and check the written bit and also if
it's already been set check for the bit and return.
Cc: Vignesh R <vigneshr@ti.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Tested-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
Setting up quad bit for micron devices need to do the
same way as other flash devices like spansion, winbond
etc does using enhanced volatile config register so this
patch adds this support instead of printing "QEB is volatile"
Cc: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Peter Pan <peterpandong@micron.com>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
- Tab space
- Place all read commands at one place.
- Re-arrange write commands.
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
Use direct call to device_remove instead of exctra
spi_flash_remove defination.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Jagan Teki <jteki@openedev.com>
bar_end gives more meaningfull compared to bank_end and
spi_flash_write_bar uses bar_end so replaced bank_end with
bar_end in spi_flash_read_bar
Signed-off-by: Jagan Teki <jteki@openedev.com>
Since spi_read_cmds_array is used locally in
spi_flash_scan, so move array to locally used
function instead of defining global array.
Tested-by: Jagan Teki <jteki@openedev.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
Since SPI_TX_* are spi_slave{} members so use spi protocol
notation instead spi flash programming, like
SPI_TX_BP => SPI_TX_BYTE
SPI_TX_QPP => SPI_TX_QUAD
Cc: Simon Glass <sjg@chromium.org>
Tested-by: Jagan Teki <jteki@openedev.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
Used mode member from spi_slave{} instead of op_mode_tx.
Cc: Simon Glass <sjg@chromium.org>
Tested-by: Jagan Teki <jteki@openedev.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
For better code readabilty, get the spi pointer from
spi_flash{} locally and use it instead of direct
dereferring spi pinter as flash->spi->*
Tested-by: Jagan Teki <jteki@openedev.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
Since all spi-flash core operations are moved into
sf_ops.c then it's better to renamed as spi-flash.c
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Jagan Teki <jteki@openedev.com>
Used static for file-scope functions in sf_probe.c
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Jagan Teki <jteki@openedev.com>
Since spi_slave is a spi pointer in spi_flash{} then assign
spi_slave{} pointer to flash->spi and remove spi_slave
pointer argument to
- spi_flash_probe_slave
- spi_flash_scan
Tested-by: Jagan Teki <jteki@openedev.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Jagan Teki <jteki@openedev.com>
For assigning read_bar commands in spansion case, break
is missing this patch add that break.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Jagan Teki <jteki@openedev.com>
SST parts added on sf_params.c supports both SST_WR which consits
of both BP and WP and there is a spi controller ich which supports
only BP so the relevent _write hook set based on "slave->op_mode_tx"
hence there is no respective change required from flash side hance
removed these.
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
Removed unneeded header includes in sf_ops and sf_probe
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Jagan Teki <jteki@openedev.com>
Using macro's for flash power up read-only access code
leads wrong behaviour hence use idcode0 for runtime
detection, hence the flash which require this functionality
gets detected at runtime.
Tested-by: Jagan Teki <jteki@openedev.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Jagan Teki <jteki@openedev.com>
Most of the register access function are static,
so used simple name to represent each.
Tested-by: Jagan Teki <jteki@openedev.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Jagan Teki <jteki@openedev.com>
This patch removes unneeded ifdef and fixed accordingly.
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Jagan Teki <jteki@openedev.com>
Use static for file-scope functions and removed
them from header files.
Tested-by: Jagan Teki <jteki@openedev.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
- Move bar read code below the bar write hance both
at once place, hence it easy for #ifdef macro only
once and readable.
- Move read_cmd_array at top
Tested-by: Jagan Teki <jteki@openedev.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Jagan Teki <jteki@openedev.com>
read_id code is related to spi_flash stuff
hence moved to sf_ops.
Tested-by: Jagan Teki <jteki@openedev.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Jagan Teki <jteki@openedev.com>
Intension is that sf_ops should deals all spi_flash
related stuff and sf_probe (which should renamed future)
should be an interface layer for spi_flash versus spi drivers.
sf_ops => spi_flash interface
sf_probe => interface layer vs spi_flash(sf_probe) to spi drivers
Tested-by: Jagan Teki <jteki@openedev.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Jagan Teki <jteki@openedev.com>
Rename spi_flash_validate_params to spi_flash_scan
as this code not only deals with params setup but
also configure all spi_flash attributes.
And also moved all flash related code into
spi_flash_scan for future functionality addition.
Tested-by: Jagan Teki <jteki@openedev.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Jagan Teki <jteki@openedev.com>
It is follow up patch based on
"dm: Add support for all targets which requires MANUAL_RELOC"
(sha1: 484fdf5ba0)
to update function pointers for DM.
Using post_bind is not ideal but it is one on current option what can be
used. Variable reloc_done has to be used do not call relocation after
every bind. Maybe new core functions should be introduced for this case.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Make spl_*_load_image() functions return a value instead of
hanging if a problem is encountered. This enables main spl code
to make the decision whether to hang or not, thus preparing
it to support alternative boot devices.
Some boot devices (namely nand and spi) do not hang on error.
Instead, they return normally and SPL proceeds to boot the
contents of the load address. This is considered a bug and
is rectified by hanging on error for these devices as well.
Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: Tom Rini <trini@konsulko.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Ian Campbell <ijc@hellion.org.uk>
Cc: Hans De Goede <hdegoede@redhat.com>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Jagan Teki <jteki@openedev.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
flash->flags for SST flash should be updated for both DM and non-DM
flash drivers.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Jagan Teki <jteki@openedev.com>
We should check the return value from spi_flash_cmd_read_status() and
propagate it in the case of error.
This fixes a defect caught by Coverity.
Reported-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Jagan Teki <jteki@openedev.com>
SST SPI NOR flash has the same locking programming bits
as ST Micro - added support for it.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
[Minor change on commit message]
Signed-off-by: Jagan Teki <jteki@openedev.com>
Reviewed-by: Jagan Teki <jteki@openedev.com>
The relevent boards which used this driver got zapped
in previous release and the driver is never used in the
code and also it doesn't use/do any spi-flash operations.
Commit details for relevent removed boards:
"ARM: at91: remove non-generic boards"
(sha1: f6b42c1403)
Cc: Tom Rini <trini@konsulko.com>
Cc: Albin Tonnerre <albin.tonnerre@free-electrons.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
commit c3c016c "sf: Add SPI NOR protection mechanism" introduced
flash_lock()/flash_unlock()/flash_is_locked() methods for SPI flash,
but not every flash driver supplies these. We should test these
methods against NULL before actually calling them.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Jagan Teki <jteki@openedev.com>
Many SPI flashes have protection bits (BP2, BP1 and BP0) in the
status register that can protect selected regions of the SPI NOR.
Take these bits into account when performing erase operations,
making sure that the protected areas are skipped.
Tested on a mx6qsabresd:
=> sf probe
SF: Detected M25P32 with page size 256 Bytes, erase size 64 KiB, total 4 MiB
=> sf protect lock 0x3f0000 0x10000
=> sf erase 0x3f0000 0x10000
offset 0x3f0000 is protected and cannot be erased
SF: 65536 bytes @ 0x3f0000 Erased: ERROR
=> sf protect unlock 0x3f0000 0x10000
=> sf erase 0x3f0000 0x10000
SF: 65536 bytes @ 0x3f0000 Erased: OK
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
[re-worked to fit the lock common to dm and non-dm]
Signed-off-by: Jagan Teki <jteki@openedev.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Jagan Teki <jteki@openedev.com>
Add the SPI NOR protection mechanism from the kernel.
This code is based on the work from
Brian Norris <computersforpeace@gmail.com>
Here is the commit details:
"mtd: spi-nor: refactor block protection functions"
(sha1: 62593cf40b23b523b9fc9334ca61ba6c595ebb09)
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Jagan Teki <jteki@openedev.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
This patch adds flag status register reading support to
spi_flash_cmd_wait_ready.
Cc: Simon Glass <sjg@chromium.org>
Cc: Marek Vasut <marex@denx.de>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Cc: Stefan Roese <sr@denx.de>
Cc: Tom Warren <twarren@nvidia.com>
Cc: Tom Rini <trini@konsulko.com>
Cc: Hou Zhiqiang <B48286@freescale.com>
Tested-by: Jagan Teki <jteki@openedev.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
Current flash wait_ready logic is not modular to add new
register status check, hence updated the status check for
adding few more register checks in future.
Below are the sf speed runs with 'sf update' on whole flash, 16MiB.
=> sf update 0x100 0x0 0x1000000
device 0 whole chip
16777216 bytes written, 0 bytes skipped in 59.564s, speed 289262 B/s
=> sf update 0x100 0x0 0x1000000
device 0 whole chip
16777216 bytes written, 0 bytes skipped in 62.549s, speed 275036 B/s
=> sf update 0x100 0x0 0x1000000
device 0 whole chip
16777216 bytes written, 0 bytes skipped in 61.276s, speed 284359 B/s
Cc: Simon Glass <sjg@chromium.org>
Cc: Marek Vasut <marex@denx.de>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Cc: Stefan Roese <sr@denx.de>
Cc: Tom Warren <twarren@nvidia.com>
Cc: Tom Rini <trini@konsulko.com>
Tested-by: Jagan Teki <jteki@openedev.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Use the flash->flags for generic usage, not only for dm-spi-flash,
this will be used for future flag additions.
[Correct the spi flash flags detect logic]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
Optimized spi-flash bar writing code and also removed
unnecessary bank_sel in read_ops.
Cc: Simon Glass <sjg@chromium.org>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
Add spi_flash_read_bar function for reading bar and
discovering bar commands at probe time.
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
If computed bank_sel is same as flash->bank_curr which is
computed at probe time, then return the bank_sel instead of zero.
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
Added support for IS25LP128 flash part.
Signed-off-by: Jagan Teki <jteki@openedev.com>
Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Added support for IS25LP064 flash part.
Signed-off-by: Jagan Teki <jteki@openedev.com>
Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Added support for IS25LP032 flash part.
Signed-off-by: Jagan Teki <jteki@openedev.com>
Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Cc: Michal Simek <michal.simek@xilinx.com>
The current name is inconsistent with other driver model data access
functions. Rename it and fix up all users.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
AT26DF081A is the spi flash type of TWR-MEM(SCH-26248) card.
We can access the flash through DSPI2 on LS1021ATWR board.
Signed-off-by: Yuan Yao <yao.yuan@freescale.com>
Reviewed-by: Jagan Teki <jteki@openedev.com>
We have flipped CONFIG_SPL_DISABLE_OF_CONTROL. We have cleansing
devices, $(SPL_) and CONFIG_IS_ENABLED(), so we are ready to clear
away the ugly logic in include/fdtdec.h:
#ifdef CONFIG_OF_CONTROL
# if defined(CONFIG_SPL_BUILD) && !defined(SPL_OF_CONTROL)
# define OF_CONTROL 0
# else
# define OF_CONTROL 1
# endif
#else
# define OF_CONTROL 0
#endif
Now CONFIG_IS_ENABLED(OF_CONTROL) is the substitute. It refers to
CONFIG_OF_CONTROL for U-boot proper and CONFIG_SPL_OF_CONTROL for
SPL.
Also, we no longer have to cancel CONFIG_OF_CONTROL in
include/config_uncmd_spl.h and scripts/Makefile.spl.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
When doing a memory mapped copy we may have DMA available and thus need
to have this copy abstracted so that the driver can do it, rather than a
simple memcpy.
Signed-off-by: Tom Rini <trini@ti.com>
Signed-off-by: Vignesh R <vigneshr@ti.com>
Reviewed-by: Jagan Teki <jteki@openedev.com>
Make the support for 4K subpage I/O on a SPI NOR flash configurable.
A board which requires the SPI NOR to be accessed in larger 32KiB
or 64KiB pages can disable the 4K subpage support, but by default,
the support for 4K subpage I/O is enabled. The functionality of this
option is the same as CONFIG_MTD_SPI_NOR_USE_4K_SECTORS in Linux.
This is extremely useful in case one uses UBI on a SPI NOR flash.
UBI needs at least 15k EBs and can not work on a flash which uses
4k ones, so disabling the support for 4k subpages lets UBI work on
such flash.
Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Jagan Teki <jteki@openedev.com>
Add kconfig options for various SPI flashes and use them in cm-fx6 defconfig.
Cc: Jagan Teki <jteki@openedev.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Added SPI_FLASH_DATAFLASH entry on Kconfig with help description.
data flash driver comes with good decription, hence moved the
same on to kconfig help decription.
Signed-off-by: Jagan Teki <jteki@openedev.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Haikun Wang <haikun.wang@freescale.com>
Added SPI_FLASH_MTD entry on Kconfig with help description.
Signed-off-by: Jagan Teki <jteki@openedev.com>
Acked-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Cc: Heiko Schocher <hs@denx.de>
Rename CONFIG_SF_DATAFLASH into CONFIG_SPI_FLASH_DATAFLASH
as it follows the naming convention same as remaining configs.
Signed-off-by: Jagan Teki <jteki@openedev.com>
sst25wf040b doesn't support Auto Address Increment Programming command.
Remove SST_WR flag.
Signed-off-by: Haikun Wang <B53464@freescale.com>
Tested-by: Haikun Wang <haikun.wang@freescale.com>
Reviewed-by: Jagannadh Teki <jteki@openedev.com>
Add MTD layer driver for spi, original patch from:
http://git.denx.de/?p=u-boot/u-boot-mips.git;a=commitdiff;h=bb246819cdc90493dd7089eaa51b9e639765cced
Changes from Heiko Schocher against this patch:
- Remove compile error if not defining CONFIG_SPI_FLASH_MTD:
LD drivers/mtd/spi/built-in.o
drivers/mtd/spi/sf_probe.o: In function `spi_flash_mtd_unregister':
/home/hs/abb/imx6/u-boot/drivers/mtd/spi/sf_internal.h:168: multiple definition of `spi_flash_mtd_unregister'
drivers/mtd/spi/sf_params.o:/home/hs/abb/imx6/u-boot/drivers/mtd/spi/sf_internal.h:168: first defined here
drivers/mtd/spi/sf_ops.o: In function `spi_flash_mtd_unregister':
/home/hs/abb/imx6/u-boot/drivers/mtd/spi/sf_internal.h:168: multiple definition of `spi_flash_mtd_unregister'
drivers/mtd/spi/sf_params.o:/home/hs/abb/imx6/u-boot/drivers/mtd/spi/sf_internal.h:168: first defined here
make[1]: *** [drivers/mtd/spi/built-in.o] Fehler 1
make: *** [drivers/mtd/spi] Fehler 2
- Add a README entry.
- Add correct writebufsize, to fit with Linux v3.14
MTD, UBI/UBIFS sync.
Note (From Jagan): For testing raw mtd parition erase/read/write operations
using cmd_sf, sf_mtd should be required to register the spi flash device to
MTD layer but the sf_mtd_info ops were not required until and unless if we
use any flash filesystem layer say for example UBI. Due to this the foot-print
got increased ~290bytes in non-UBI case here that should be acceptible.
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Signed-off-by: Heiko Schocher <hs@denx.de>
Tested-by: Jagannadh Teki <jteki@openedev.com>
Reviewed-by: Jagannadh Teki <jteki@openedev.com>
Atmel DataFlash chips have commands different from common spi
flash commands.
Atmel DataFlash also have special page-size.
This driver add support for accessing Atmel DataFlash.
It is based on the Driver Model.
Example:
=> sf probe 1:0
SPI DataFlash: Detected AT45DB021B with page size 264 Bytes, erase size 264 Bytes, total 264 KiB, revision d
=> sf erase 0 42000
SF: 270336 bytes @ 0x0 Erased: OK
=> mw.l 82000000 45444342 20000
=> sf write 82000000 0 42000
SF: 270336 bytes @ 0x0 Written: OK
=> sf read 83000000 0 42000
SF: 270336 bytes @ 0x0 Read: OK
=> cmp.b 82000000 83000000 42000
Total of 270336 byte(s) were the same
Signed-off-by: Haikun Wang <haikun.wang@freescale.com>
Tested-by: Haikun Wang <haikun.wang@freescale.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Chakra Divi <cdivi@openedev.com>
Reviewed-by: Jagan Teki <jteki@openedev.com>
This printf() should have a newline at the end. Add it.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Jagan Teki <jteki@openedev.com>
Default name of spi flash like this "0:0", update it to "spi_flash@0:0".
Signed-off-by: Haikun Wang <haikun.wang@freescale.com>
Acked-by: Simon Glass <sjg@chromium.org>
Upto now flash sector_size is assigned from params which isn't
necessarily a sector size from vendor, so based on the SECT_*
flags from flash_params the erase_size will compute and it will
become the sector_size finally.
Bug report (from Bin Meng):
=> sf probe
SF: Detected SST25VF016B with page size 256 Bytes, erase size 4 KiB,
total 2 MiB, mapped at ffe00000
=> sf erase 0 +100
SF: 65536 bytes @ 0x0 Erased: OK
Signed-off-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Reported-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
With SPI flash moving to driver model, commit fbb0991 "dm: Convert
spi_flash_probe() and 'sf probe' to use driver model" ignored the
SST flash-specific write op (byte program & word program), which
actually broke the SST flash from wroking.
This commit makes SST flash work again under driver model, by adding
SST flash-specific handling in the spi_flash_std_write().
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Add a new member 'flags' in struct spi_flash to store the flash flags
during spi_flash_validate_params().
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
This reverts commit 562f8df18d.
Note: Even un-reverting this patch couldn't works as expected, based
on the latest testing from Heiko Schocher.
Signed-off-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Cc: Heiko Schocher <hs@denx.de>
Need to check value of spi_setup_slave and spi_setup_slave_fdt.
If their return value 'bus' is NULL, there is no need to pass it
to following spi_flash_probe_tail.
If 'bus' is null, the original function flow is as following:
spi_flash_probe
|->spi_setup_slave
|->spi_probe_bus_tail
|->spi_flash_probe_slave
|->spi_free_slave
Alougth check the pointer in spi_free_slave is ok, checking the return value
of spi_setup_slave and spi_setup_slave_fdt is better.
Before this fix:
"
=> sf probe 0:2
FSL_QSPI: Not a valid cs !
SF: Failed to set up slave
data abort
pc : [<fff66dcc>] lr : [<fff7628c>]
reloc pc : [<87814dcc>] lr : [<8782428c>]
sp : fdf4fcf0 ip : e630396c fp : fe0d0888
r10: fffa2538 r9 : fdf4feb8 r8 : 02625a00
r7 : 00000002 r6 : fff94ec0 r5 : 00000000 r4 : 9355553c
r3 : 1af0593c r2 : cb3fe030 r1 : fff94eb8 r0 : e59ff018
Flags: nZCv IRQs off FIQs off Mode SVC_32
Resetting CPU ...
"
After this fix:
"
=> sf probe 0:2
FSL_QSPI: Not a valid cs !
Failed to initialize SPI flash at 0:2
"
No data abort using this patch.
Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Poll both the Read status and Flag status registers
for sucessful erase and program operations for the
Micron devices with E_FSR flag set in params table.
Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
CONFIG_SPI does not exist in Kconfig in the first place, so the
dependency "depends on DM && SPI" is never met, i.e., DM_SPI_FLASH
can never be enabled (unless you ignore the dependency in an illegal
way. See below.)
Actually, some defconfigs such as socfpga_*_defconfig define
CONFIG_DM_SPI_FLASH=y, but it never appears in the .config file
because of this wrong dependency.
On the other hand, all the Tegra boards enable DM_SPI_FLASH because
config DM_SPI_FLASH
default y
silently ignores the dependency.
Unfortunately, this style of CONFIG definition is abused everywhere
in U-Boot, so we easily miss such a wrong dependency.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Simon Glass <sjg@chromium.org>
Permit use of a udevice to talk to SPI flash. Ultimately we would like
to retire the use of 'struct spi_flash' for this purpose, so create the
new API for those who want to move to it.
Signed-off-by: Simon Glass <sjg@chromium.org>
In the case where the arch defines a custom map_sysmem(), make sure that
including just mapmem.h is sufficient to have these functions as they
are when the arch does not override it.
Also split the non-arch specific functions out of common.h
Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add a convenience function to access the private data that a uclass stores
for each of its devices. Convert over most existing uses for consistency
and to provide an example for others.
Signed-off-by: Simon Glass <sjg@chromium.org>
Expand the help messages for each driver. Add missing Kconfig for I2C,
SPI flash and thermal.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
At present we go through various contortions to store the SPI slave's chip
select in its private data. This only exists when the slave is active so
must be set up when it is probed. Until the device is probed we don't
actually know what chip select it will appear on.
However, now that we can support per-child platform data, we can use that
instead. This allows us to set up the chip select when the child is bound,
and avoid the messy contortions.
Unfortunately this is a fairly large change and it seems to be difficult to
break it down further.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add the necessary flash entry for the Spansion S25FL164K
flash. Tested on Marvell 88F6218 based design.
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Added S25FL116K flash and tested on Marvell 88F6281 based system.
Signed-off-by: Adnan Ali <adnan.ali@codethink.co.uk>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Add support for SST25WF040B-40I-SN flash.
Tested on T1024QDS board.
Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Removed ramtron driver since the EMK boards are
no longer been active, and these are the only boards
used this flash driver.
Commit details for EMK zap:
"ppc/arm: zap EMK boards"
(sha1: d58a9451e7)
Signed-off-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Cc: Reinhard Meyer <reinhard.meyer@emk-elektronik.de>
Enabled byte program support for sst flashes in sf.
Few controllers will only support BP, so this patch gives
a tx transfer flag to set the BP so-that sf will operate
on byte program transfer.
A new TX operation mode SPI_OPM_TX_BP is introduced for such SPI
controller to use byte program op for SST flash.
Signed-off-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Currently if SST flash advertises SST_WP flag in the params table
the word program command (ADh) with auto address increment will be
used for the flash write op. However some SPI controllers do not
support the word program command (like the Intel ICH 7), the byte
programm command (02h) has to be used.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
At present SECT_4K is the same as SST_WP so we cannot tell these apart. Fix
this so that the table in sf_params.c can be used correctly.
Reported-by: Jens Rottmann <Jens.Rottmann@adlinktech.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Few of the spi controllers are only supports array slow
read which is quite different behaviour compared to others.
So this fix on sf will correctly handle the slow read supported
controllers.
Signed-off-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
U-Boot has never cared about the type when we get max/min of two
values, but Linux Kernel does. This commit gets min, max, min3, max3
macros synced with the kernel introducing type checks.
Many of references of those macros must be fixed to suppress warnings.
We have two options:
- Use min, max, min3, max3 only when the arguments have the same type
(or add casts to the arguments)
- Use min_t/max_t instead with the appropriate type for the first
argument
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Pavel Machek <pavel@denx.de>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>
Tested-by: Lukasz Majewski <l.majewski@samsung.com>
[trini: Fixup arch/blackfin/lib/string.c]
Signed-off-by: Tom Rini <trini@ti.com>
The SPI function does the same thing, so we may as well just use the new
generic function. The 'cs' parameter was not actually used, so can be
dropped.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Acked-by: Heiko Schocher <hs@denx.de>
This code was not updated when the chip select handling was adjusted. Fix
it to call the correct function.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Acked-by: Heiko Schocher <hs@denx.de>
Convert sandbox's spi flash emulation driver to use driver model.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
We want the SPI flash probing feature to operate as a standard driver.
Add a driver for the basic probing feature used by most boards. This
will be activated by device_probe() as with any other driver.
The 'sf probe' command currently keeps track of the SPI slave that it
last used. This doesn't work with driver model, since some other driver
or system may have probed the device and have access to it too. On the
other hand, if we try to probe a device twice the second probe is a nop
with driver model.
Fix this by searching for the matching device, removing it, and then
probing it again. This should work as expected regardless of other device
activity.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Add a driver model uclass for SPI flash which supports the common
operations (read, write, erase). Since we must keep support for the
non-dm interface, some modification of the spi_flash header is required.
CONFIG_DM_SPI_FLASH is used to enable driver model for SPI flash.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Adjust spi_flash_probe_slave() to return an error value instead of a
pointer so we get the correct error return.
Have the caller allocate memory for spi_flash to simplify error handling,
and also so that driver model can use its existing allocated memory.
Add a spi.h include in the sf_params file.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Since spi_flash.h is supposed to be the public API for SPI flash, move
private things to sf_internal.h. Also tidy up a few comment nits.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Some files are using SPI functions but not explitly including the SPI
header file. Fix this, since driver model needs it.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
At present sandbox has its own table of supported SPI flash chips. Now that
the SPI flash system is fully consolidated and has its own list, sandbox
should use that.
This enables us to expand the number of chips that sandbox supports.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Add ID for this Numonix / STMicro chip.
Tested on Marvell DB-78460-BP board.
Signed-off-by: Stefan Roese <sr@denx.de>
Tested-by: Luka Perkov <luka@openwrt.org>
Reviewed-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Currently, CONFIG_SPL_SPI_* #defines are used for controlling SPI boot in
SPL. These #defines do not allow the user to select SPI mode for the SPI flash
(there's no CONFIG_SPL_SPI_MODE, so the SPI mode is hardcoded in
spi_spl_load.c), and duplicate information already provided by
CONFIG_SF_DEFAULT_* #defines.
Kill CONFIG_SPL_SPI_*, and use CONFIG_SF_DEFAULT_* instead.
Cc: Tom Rini <trini@ti.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Cc: Lokesh Vutla <lokeshvutla@ti.com>
Cc: Vitaly Andrianov <vitalya@ti.com>
Cc: Lars Poeschel <poeschel@lemonage.de>
Cc: Bo Shen <voice.shen@atmel.com>
Cc: Hannes Petermaier <hannes.petermaier@br-automation.com>
Cc: Michal Simek <monstr@monstr.eu>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Reviewed-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Add support for M25PE16 and M25PX16
Cc: Marek Vasut <marex@denx.de>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Reviewed-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
The list is supposed to be terminated with a NULL name, but is not. If a
board probes a chip which does not appear in the table, U-Boot will crash
(at least on sandbox).
Signed-off-by: Simon Glass <sjg@chromium.org>
It's usually a common pattern to free() the memory that we allocated.
Implement this here to stop leaking memory.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
enable the W#/Vpp signal to disable writing to the status
register on ST MICRON flashes like the N25Q128 thorugh
the new config option CONFIG_SYS_SPI_ST_ENABLE_WP_PIN
Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Currently, flash quad bit is set in "spi_flash_validate_params" and later
at the end in the same api, we write 0 to status register for few flashes,
thereby overriding the quad bit set. This fix moves the quad bit setting
outside this api in "spi_flash_probe_slave"
Signed-off-by: Sourav Poddar <sourav.poddar@ti.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Add support of loading image, binary for MMC and SPI during SPL boot.
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
SPI driver perform its operation(read/write) on 64KB buffer chunk for data
greater than 64KB. This buffer chunk is allocated from system heap.
During SPL boot, 768KB of data is read from SPI flash.
Here, heap size may not be sufficient enough to full-fill 64KB buffer
requirement of SPI driver. So break down u-boot read operation at 8KB of chunk.
Also, fix a warning i.e. "unused variable buf" during CONFIG_FSL_CORENET
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
The commit 6af8dc3ebc broke support for
S25FL032P and S25FL064P by carelessly removing the code handling special
page size for these two SPI NOR flashes and unifying the code under the
assumption that Extended JEDEC ID of 0x4d00 always implies 512b page size.
Add special case handling for these two SPI NOR flashes.
Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Squash the malloc()+memset() combo in favor of calloc().
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Acked-by: Marek Vasut <marex@denx.de>
Squash the malloc()+memset() combo in favor of calloc().
Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Both of these chips have 256kB big sectors, thus the _256K suffix,
compared to their _64K counterparts, which have 64kB sectors. Also,
they have four times less sectors than their _64K counterparts.
Signed-off-by: Marek Vasut <marex@denx.de>
Tested-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Remove the flag SECT_4K for device N25Q128 as the 4K-byte
sub sector erase granularity is available only for top/bottom
8 sectors in some of the N25Q128 chips.
Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
This config will use for defining greater than single flash support.
currently - DUAL_STACKED and DUAL_PARALLEL.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
This patch added support for accessing dual memories in
parallel connection with single chipselect line from controller.
For more info - see doc/SPI/README.dual-flash
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
This patch added support for accessing dual memories in
stacked connection with single chipselect line from controller.
For more info - see doc/SPI/README.dual-flash
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
QEB code comprises of couple of flash register read/write operations,
this patch moved flash register operations on to sf_op
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Added macronix flash quad read/write commands support and
it's up to the respective controller driver usecase to
configure the respective commands by defining SPI RX/TX
operation modes from include/spi.h on the driver.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
This patch adds set QEB support for macronix flash devices
which are trying to program/read quad operations.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Moved the flash params table from sf_probe.c and
placed on to sf_params.c, hence flash params file will
alter based on new addons.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
This patch enabled RD_FULL and WR_QPP for supported flashes
in micron, winbond and spansion.
Remaining parts will be add in future patches.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
This patch provides support to set the quad enable bit on flash.
quad enable bit needs to set before performing any quad IO
operations on respective SPI flashes.
Currently added set quad enable bit for winbond and spansion flash
devices. stmicro flash doesn't require to set as qeb is volatile.
remaining flash devices support will add in future patches.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
This patch provides support to program a flash config register.
Configuration register contains the control bits used to configure
the different configurations and security features of a device.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
This patch add quad commands support like
- QUAD_PAGE_PROGRAM => for write program
- QUAD_OUTPUT_FAST ->> for read program
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Current sf uses FAST_READ command, this patch adds support to
use the different/extended read command.
This implementation will determine the fastest command by taking
the supported commands from the flash and the controller, controller
is always been a priority.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
claim spi bus while doing memory copy, this will set up
the spi controller device control register before doing
a memory read.
Signed-off-by: Sourav Poddar <sourav.poddar@ti.com>
Tested-by: Yebio Mesfin <ymesfin@ti.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Add support for Macronix MX25L2006E SPI flash.
Signed-off-by: Luka Perkov <luka@openwrt.org>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
All other hex values in sf_probe.c are in lower case so we should
fix this one too.
Signed-off-by: Luka Perkov <luka@openwrt.org>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
This adds a SPI flash driver which simulates SPI flash clients.
Currently supports the bare min that U-Boot requires: you can
probe, read, erase, and write. Should be easy to extend to make
it behave more exactly like a real SPI flash, but this is good
enough to merge now.
sjg@chromium.org added a README and tidied up code a little.
Added a required map_sysmem() for sandbox.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
This allows us to put the SPI flash chip inside the SPI interface node,
with U-Boot finding the correct bus and chip select automatically.
Signed-off-by: Simon Glass <sjg@chromium.org>
Existing eSPI SPL framework assumes booting from spi-image
with boot_format header which contains final u-boot Image
offset and size. No such header is present in case of
corenet devices like T1040 as corenet deivces use PBI-RCW
based intialization.
So, for corenet deives, SPL bootloader use values provided
at compilation time. These values can be defined in board
specific config file.
Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com>
Acked-by: York Sun <yorksun@freescale.com>
As the spi flash transfer to multiple parts, it is forgot to add
Atmel AT25DF321 spi flash support, which broken several Atmel EK
boards which this chip. So, add it
Signed-off-by: Bo Shen <voice.shen@atmel.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Added GPL-2.0+ SPDX-License-Identifier for missed sf
source files.
Signed-off-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Signed-off-by: Bo Shen <voice.shen@atmel.com>
There is no page_size for ramtron flashes,
so just print the detected flash and it's size.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Qspi controller can have a memory mapped port which can be used for
data read. Added support to enable memory mapped port read.
This patch enables the following:
- It enables exchange of memory map address between mtd and qspi
through the introduction of "memory_map" flag.
- Add support to communicate to the driver that memory mapped
transfer is to be started through introduction of new flags like
"SPI_XFER_MEM_MAP" and "SPI_XFER_MEM_MAP_END".
This will enable the spi controller to do memory mapped configurations
if required.
Signed-off-by: Sourav Poddar <sourav.poddar@ti.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Use flash->page_size arg in print_size() instead of
flash->sector_size while printing detected flas part details.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Now the common probing is handled in spi_flash_probe.c
hence removed the unneeded flash drivers.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Compared to other spi flashes, ramtron has a different
probing and implementation on flash ops, hence moved
ramtron probe code into ramtron driver.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
From Micron, 512MB onwards, flash requires to poll flag status
instead of read status- hence added E_FSR flag on spectific
flash parts.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
SECT_4K, SECT_32K and SECT_64K opeartions are performed to
to specific flash by adding a SECT* flag on respective
spi_flash_params.flag param.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Few of the flashes(Atmel, Macronix and SST) require to
clear BP# bits in flash power ups.
So clear these BP# bits at probe time, so-that the flash
is ready for user operations.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Most of the SST flashes needs to write up using SST_WP, AAI
Word Program, so added a flag param on spi_flash_params table.
SST flashes, which supports SST_WP need to use a WP write
sst_write_wp instead of common flash write.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Added AT45DB* parts are which are avilable in spi_flash_probe_legacy.c.
Updated the sector_size attributes as per the flash parts.
Looks fine for with this sector_size for computing the size
of flash.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Added SST25* parts are which are avilable in spi_flash_probe_legacy.c.
Updated the sector_size attributes as per the flash parts.
Looks fine for with this sector_size for computing the size
of flash.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Tested-by: Eric Nelson <eric.nelson@boundarydevices.com>
Added S25FL* parts are which are avilable in spi_flash_probe_legacy.c.
Updated the sector_size attributes as per the flash parts.
Looks fine for with this sector_size for computing the size
of flash.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Added W25* parts are which are avilable in spi_flash_probe_legacy.c.
Updated the sector_size attributes as per the flash parts.
Looks fine for with this sector_size for computing the size
of flash.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Added MX25L* parts are which are avilable in spi_flash_probe_legacy.c.
Updated the sector_size attributes as per the flash parts.
Looks fine for with this sector_size for computing the size
of flash.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Added GD25* parts are which are avilable in spi_flash_probe_legacy.c.
Updated the sector_size attributes as per the flash parts.
Looks fine for with this sector_size for computing the size
of flash.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Added EN25Q* parts are which are avilable in spi_flash_probe_legacy.c.
Updated the sector_size attributes as per the flash parts.
Looks fine for with this sector_size for computing the size
of flash.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Added M25P* parts are which are avilable in spi_flash_probe_legacy.c.
Updated the sector_size attributes as per the flash parts.
Looks fine for with this sector_size for computing the size of flash.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Added new spi_flash_probe support, currently added N25Q*
flash part attributes support.
Updated the sector_size attributes as per the flash parts.
Looks fine for with this sector_size for computing the size
of flash.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Divided the spi_flash framework into mutiple parts for
- spi_flash.c:
spi flash core file, interaction for spi/qspi driver to
spi_flash framework.
- spi_flash_ops.c
spi flash preffered operations, erase,write and read.
- spi_flash_probe.c
spi flash probing, easy to extend probing functionality.
This change will support to extend the functionality in a
proper manner.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
This patch cleans up license header in these files:
board/freescale/p1022ds/spl.c
drivers/mmc/fsl_esdhc_spl.c
drivers/mtd/spi/fsl_espi_spl.c
Signed-off-by: York Sun <yorksun@freescale.com>
This patch introduces SPL to enable a loader stub that being loaded by
the code from the internal on-chip ROM. It loads the final uboot image
into DDR, then jump to it to begin execution.
The SPL's size is sizeable, the maximum size must not exceed the size of L2
SRAM. It initializes the DDR through SPD code, and copys final uboot image
to DDR. So there are two stage uboot images:
* spl_boot, 96KB size. The env variables are copied to L2 SRAM, so that
ddr spd code can get the interleaving mode setting in env. It loads
final uboot image from offset 96KB.
* final uboot image, size is variable depends on the functions enabled.
Signed-off-by: Ying Zhang <b40530@freescale.com>
Acked-by: York Sun <yorksun@freescale.com>
Add support for SST25WF080 SPI flash.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
- line over 80 characters
- foo * bar -> foo *bar
- removed unnecessary for single statement blocks.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Move common flash write code into spi_flash_write_common().
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Acked-by: Simon Glass <sjg@chromium.org>
Flag status register polling is required for micron 512Mb flash
devices onwards, for performing erase/program operations.
Like polling for WIP(Write-In-Progress) bit in read status register,
spi_flash_cmd_wait_ready will poll for PEC(Program-Erase-Control)
bit in flag status register.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
There is no other call other than spi_flash_cmd_wait_ready(),
hence removed spi_flash_cmd_poll_bit and use the poll status code
spi_flash_cmd_wait_ready() itself.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Use the existing spi_flash_addr() for 3-byte addressing
cmd filling in write call.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Defined bank addr code on CONFIG_SPI_FLASH_BAR macro, to reduce the
size for existing boards which has < 16Mbytes SPI flashes.
It's upto user which has provision to use the bank addr code for
flashes which has > 16Mbytes.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This patch updated the spi_flash read func to support all
sizes of flashes using bank reg addr facility.
The same support has been added in below patch for erase/write
spi_flash functions:
"sf: Support all sizes of flashes using bank addr reg facility"
(sha1: c956f600cbb0943d0afe1004cdb503f4fcd8f415)
With these new updates on sf framework, the flashes which has < 16MB
are not effected as per as performance is concern and but the
u-boot.bin size incrased ~460 bytes.
sf update(for first 16MBytes), Changes before:
U-Boot> sf update 0x1000000 0x0 0x1000000
- N25Q256
16777216 bytes written, 0 bytes skipped in 199.72s, speed 86480 B/s
- W25Q128BV
16777216 bytes written, 0 bytes skipped in 351.739s, speed 48913 B/s
- S25FL256S_64K
16777216 bytes written, 0 bytes skipped in 65.659s, speed 262144 B/s
sf update(for first 16MBytes), Changes before:
U-Boot> sf update 0x1000000 0x0 0x1000000
- N25Q256
16777216 bytes written, 0 bytes skipped in 198.953s, speed 86480 B/s
- W25Q128BV
16777216 bytes written, 0 bytes skipped in 350.90s, speed 49200 B/s
- S25FL256S_64K
16777216 bytes written, 0 bytes skipped in 66.521s, speed 262144 B/s
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Updated the spi_flash framework to handle all sizes of flashes
using bank/extd addr reg facility
The current implementation in spi_flash supports 3-byte address mode
due to this up to 16Mbytes amount of flash is able to access for those
flashes which has an actual size of > 16MB.
As most of the flashes introduces a bank/extd address registers
for accessing the flashes in 16Mbytes of banks if the flash size
is > 16Mbytes, this new scheme will add the bank selection feature
for performing write/erase operations on all flashes.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Read the flash bank addr register to get the state of bank in
a perticular flash. and also bank write happens only when there is
a change in bank selection from user.
bank read only valid for flashes which has > 16Mbytes those are
opearted in 3-byte addr mode, each bank occupies 16Mytes.
Suppose if the flash has 64Mbytes size consists of 4 banks like
bank0, bank1, bank2 and bank3.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Bank/Extended addr commands are specific to particular
flash vendor so discover them based on the idocode0.
Assign the discovered bank commands to spi_flash members
so-that the bank read/write will use their specific operations.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
This patch provides support to program a flash bank address
register.
extended/bank address register contains an information to access
the 4th byte addressing in 3-byte address mode.
reff' the spec for more details about bank addr register
in Page-63, Table 8.16
http://www.spansion.com/Support/Datasheets/S25FL128S_256S_00.pdf
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Use the exact names for W25Q 0x40XX ID's flash parts, as the same
sizes of flashes comes with different ID's. so-that the distinguishes
becomes easy with this change.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Corrected the name of S25FL128S 64K sector part SPI flash,
S25FL128S supported has been added in below commit
"sf: spansion: Add support for S25FL128S"
(sha1: 1bfb9f156a)
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
This patch corrected the nr_blocks used for W25Q32DW SPI flash.
nr_blcoks are incorrectly assigned on below patch
"sf: winbond: add W25Q32DW"
(sha1: 772ba15474)
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Add support for Winbond W25Q80BW SPI flash.
This patch corrected the flash name, nr_blocks and
also commit message header from below patch.
"sf: winbond: add W25Q32"
(sha1: c969abc470)
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
As the per the ID tabl the flash is under Uniform 64-kB sector
architecture, hence updated with proper name.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
This patch adds a print messages while using 'sf read' and
'sf write' commands to make sure that how many bytes read/written
from/into flash device.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Acked-by: Tom Rini <trini@ti.com>
This patch adds a print messages while using 'sf erase' command
to make sure that how many bytes erased in flash device.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Acked-by: Tom Rini <trini@ti.com>
Missing return after memcpy is done for memory-mapped SPI flashes,
hence added retun 0 after memcpy done.
The return is missing in below patch
"sf: Enable FDT-based configuration and memory mapping"
(sha1: bb8215f437)
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Acked-by: Simon Glass <sjg@chromium.org>
Add support for Winbond's W25PXX SPI flash.
These devices is used on Faraday A369 evaluation board.
Signed-off-by: Kuo-Jung Su <dantesu@faraday-tech.com>
CC: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
CC: Tom Rini <trini@ti.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Add support for Winbond W25Q256 SPI flash.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
This is a S25FL064A successor. It supports up to 104MHz bus
speed.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Wolfgang Denk <wd@denx.de>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
SPANSION recommend S25FL128S supersedes S25FL129P, and the two flash
memory have the same device ID and Memory architecture. So they can
use the same config parameters.
Signed-off-by: Xie Xiaobo <X.Xie@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
This patch adds driver for the gigabyte devices
GD25LQ and GD25Q64B required for Snow Board.
Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@ti.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Add support for Winbond W25Q32DW 32Mbit part
Signed-off-by: Allen Martin <amartin@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Enable device tree control of SPI flash, and use this to implement
memory-mapped SPI flash, which is supported on Intel chips.
Signed-off-by: Simon Glass <sjg@chromium.org>
Some SPI flash controllers (e.g. Intel ICH) have a limit on the number of
bytes that can be in a write transaction. Support this by breaking the
writes into multiple transactions.
Signed-off-by: Simon Glass <sjg@chromium.org>
