nand_spl_load_image implementation was copied over into three
different drivers and now with nand_spl_read_block used for
ubispl situation gets even worse. For now use least intrusive
solution and #include the same implementation to nand drivers.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Tested-by: Pau Pajuelo <ppajuel@gmail.com>
Various commands to NAND flash results in the NAND flash becoming busy.
For those commands the SoC should wait until the NAND indicates it is
no longer busy before sending further commands. However, there is a delay
between the time the SoC sends its last command and when the NAND flash
sets its Ready/Busy Pin. This delay (tWB) must be respected or the SoC may
falsely assume the flash is ready when in reality it just hasn't had enough
time to indicate that it is busy.
Properly delaying by tWB is already done for nand_command/nand_command_lp
in nand_base.c including the version of it in the Linux kernel. Therefore,
this patch brings the handling of tWB delay inline to nand_base.c
Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
[trini: Reformat comments slightly]
Signed-off-by: Tom Rini <trini@konsulko.com>
Some drivers are still directly accessing the chip->mtd field. Patch
them to use nand_to_mtd() instead.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
These functions are part of the Linux 4.6 sync. They are being added
before the main sync patch in order to make it easier to address the
issue across all NAND drivers (many/most of which do not closely track
their Linux counterparts) separately from other merge issues.
Signed-off-by: Scott Wood <oss@buserror.net>
nand_info[] is now an array of pointers, with the actual mtd_info
instance embedded in struct nand_chip.
This is in preparation for syncing the NAND code with Linux 4.6,
which makes the same change to struct nand_chip. It's in a separate
commit due to the large amount of changes required to accommodate the
change to nand_info[].
Signed-off-by: Scott Wood <oss@buserror.net>
When offset is not aligned to page address, it is possible that extra offset
will be read from nand. Adjust the image such that first byte of the image
is at load address after the first page is read.
Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
OMAP GPMC driver used with some NAND Flash devices
(e.g. Spansion S34ML08G1) causes that U-boot shows
hundreds of 'nand: bit-flip corrected' error messages.
Possible cause was discussed in the mailinglist thread:
http://lists.denx.de/pipermail/u-boot/2014-April/177508.html
The issue was partially fixed with the cc81a5291910d7a.git
however this has to be done to fix the SPL.
The original author of the code is Belisko Marek
<marek.belisko@gmail.com>
Signed-off-by: Rostislav Lisovy <lisovy@merica.cz>
As per following Sections in ONFI Spec, NAND_CMD_READID should use only
lower 8-bit for transfering command, address and data even on x16 NAND device.
*Section: Target Initialization"
"The Read ID and Read Parameter Page commands only use the lower 8-bits of the
data bus. The host shall not issue commands that use a word data width on x16
devices until the host determines the device supports a 16-bit data bus width
in the parameter page."
*Section: Bus Width Requirements*
"When the host supports a 16-bit bus width, only data is transferred at the
16-bit width. All address and command line transfers shall use only the lower
8-bits of the data bus. During command transfers, the host may place any value
on the upper 8-bits of the data bus. During address transfers, the host shall
set the upper 8-bits of the data bus to 00h."
Thus porting following commit from linux-kernel to ensure that column address
is not altered to align to x16 bus when issuing NAND_CMD_READID command.
commit 3dad2344e92c6e1aeae42df1c4824f307c51bcc7
mtd: nand: force NAND_CMD_READID onto 8-bit bus
Author: Brian Norris <computersforpeace@gmail.com> (preserving authorship)
The NAND command helpers tend to automatically shift the column address
for x16 bus devices, since most commands expect a word address, not a
byte address. The Read ID command, however, expects an 8-bit address
(i.e., 0x00, 0x20, or 0x40 should not be translated to 0x00, 0x10, or
0x20).
This fixes the column address for a few drivers which imitate the
nand_base defaults.
Signed-off-by: Pekon Gupta <pekon@ti.com>
This mainly converts the am335x_spl_bch driver to the "normal" format
which means a slight change to nand_info within the driver.
Acked-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Tom Rini <trini@ti.com>
AM33XX with BCH8 can't work with nand_spl_simple correctly
because custom read_page implementation is required for proper
syndrome generation.
This simple driver mostly duplicates nand_spl_simple but has
nand_read_page changed to suit our needs.
Signed-off-by: Ilya Yanok <ilya.yanok@cogentembedded.com>
