| 4ccae81c | 15-Jun-2016 |
Boris Brezillon <boris.brezillon@free-electrons.com> |
mtd: nand: Add the sunxi NAND controller driver
We already have an SPL driver for the sunxi NAND controller, now add
the normal/standard one.
The source has been copied from Linux 4.6 with a few ch
mtd: nand: Add the sunxi NAND controller driver
We already have an SPL driver for the sunxi NAND controller, now add
the normal/standard one.
The source has been copied from Linux 4.6 with a few changes to make
it work in u-boot.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
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| 7748b414 | 06-Jun-2016 |
Boris Brezillon <boris.brezillon@free-electrons.com> |
spl: nand: sunxi: add support for NAND config auto-detection
NAND chips are supposed to expose their capabilities through advanced
mechanisms like READID, ONFI or JEDEC parameter tables. While those
spl: nand: sunxi: add support for NAND config auto-detection
NAND chips are supposed to expose their capabilities through advanced
mechanisms like READID, ONFI or JEDEC parameter tables. While those
methods are appropriate for the bootloader itself, it's way to
complicated and takes too much space to fit in the SPL.
Replace those mechanisms by a dumb 'trial and error' mechanism.
With this new approach we can get rid of the fixed config list that was
used in the sunxi NAND SPL driver.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
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| 4e7d1b3b | 06-Jun-2016 |
Boris Brezillon <boris.brezillon@free-electrons.com> |
spl: nand: sunxi: split 'load page' and 'read page' logic
Split the 'load page' and 'read page' logic in 2 different functions so
we can later load the page and test different ECC configs without th
spl: nand: sunxi: split 'load page' and 'read page' logic
Split the 'load page' and 'read page' logic in 2 different functions so
we can later load the page and test different ECC configs without the
penalty of reloading the same page in the NAND cache.
We also move common setup to a dedicated function (nand_apply_config()) to
avoid rewriting the same values in NFC registers each time we read a page.
These new functions are passed a pointer to an nfc_config struct to limit
the number of parameters.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
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| bb9783b6 | 06-Jun-2016 |
Boris Brezillon <boris.brezillon@free-electrons.com> |
spl: nand: sunxi: rework status polling loop
check_value_xxx() helpers are using a 1ms delay between each test, which
can be quite long for some operations (like a page read on an SLC NAND).
Since w
spl: nand: sunxi: rework status polling loop
check_value_xxx() helpers are using a 1ms delay between each test, which
can be quite long for some operations (like a page read on an SLC NAND).
Since we don't have anything to do but to poll this register, reduce the
delay between each test to 1us.
While we're at it, rename the max_number_of_retries parameters and the
MAX_RETRIES macro into timeout_us and DEFAULT_TIMEOUT_US to reflect that
we're actually waiting a given amount of time and not only a number of
retries.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
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| fa301158 | 06-Jun-2016 |
Boris Brezillon <boris.brezillon@free-electrons.com> |
spl: nand: sunxi: stop guessing the redundant u-boot offset
Use CONFIG_SYS_NAND_U_BOOT_OFFS_REDUND value instead of trying to guess
where the redundant u-boot image is based on simple (and most of t
spl: nand: sunxi: stop guessing the redundant u-boot offset
Use CONFIG_SYS_NAND_U_BOOT_OFFS_REDUND value instead of trying to guess
where the redundant u-boot image is based on simple (and most of the time
erroneous) heuristics.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
# Conflicts:
# drivers/mtd/nand/sunxi_nand_spl.c
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| 80ef700f | 06-Jun-2016 |
Boris Brezillon <boris.brezillon@free-electrons.com> |
spl: nand: support redundant u-boot image
On modern NAND it's more than recommended to have a backup copy of the
u-boot binary to recover from corruption: bitflips are quite common on
MLC NANDs, and
spl: nand: support redundant u-boot image
On modern NAND it's more than recommended to have a backup copy of the
u-boot binary to recover from corruption: bitflips are quite common on
MLC NANDs, and the read-disturbance will corrupt your u-boot partitition
more quickly than what you would see on an SLC NAND.
Add an extra Kconfig option to specify the offset of the redundant u-boot
image.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
[scottwood: added ifdef to fix build break]
Signed-off-by: Scott Wood <oss@buserror.net>
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| 494e1086 | 06-Jun-2016 |
Boris Brezillon <boris.brezillon@free-electrons.com> |
spl: nand: rework SYS_NAND_U_BOOT_OFFS Kconfig option dependency
The SYS_NAND_U_BOOT_OFFS is quite generic, but the Kconfig entry is forced
to explicitly depend on platforms that are not already def
spl: nand: rework SYS_NAND_U_BOOT_OFFS Kconfig option dependency
The SYS_NAND_U_BOOT_OFFS is quite generic, but the Kconfig entry is forced
to explicitly depend on platforms that are not already defining it in their
include/configs/<board>.h header.
Add the SYS_NAND_U_BOOT_LOCATIONS option, make the SYS_NAND_U_BOOT_OFFS
depends on it, remove the dependency on NAND_SUNXI and make it dependent
on SPL selection.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
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| c4adf9db | 06-Jun-2016 |
Boris Brezillon <boris.brezillon@free-electrons.com> |
spl: nand: sunxi: remove support for so-called 'syndrome' mode
The sunxi SPL NAND controller driver supports use 'BootROM'-like configs,
that is, configs where the ECC bytes and real data are interl
spl: nand: sunxi: remove support for so-called 'syndrome' mode
The sunxi SPL NAND controller driver supports use 'BootROM'-like configs,
that is, configs where the ECC bytes and real data are interleaved in the
page instead of putting ECC bytes in the OOB area.
Doing that has several drawbacks:
- since you're interleaving data and ECC bytes you can't use the whole page
otherwise you might override the bad block marker with non-FF bytes.
- to solve the bad block marker problem, the ROM code supports partially
using the page, but this introduces a huge penalty both in term of read
speed and NAND memory usage. While this is fine for rather small
binaries(like the SPL one which is at maximum 24KB large), it becomes
non-negligible for the bootloader image (several hundred of KB).
- auto-detection of the page size is not reliable (this is in my opinion
the biggest problem). If you get the page size wrong, you'll end up
reading data at a different offset than what was specified by the caller
and the reading may succeed (if valid data were written at this address).
For all those reasons I think it's wiser to completely remove support for
'syndrome' configs. If we ever need to support it again, then I'd recommend
specifying all the config parameters through Kconfig options.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
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| 65319f15 | 05-May-2016 |
Andre Renaud <andre@designa-electronics.com> |
at91: nand: Set up the ECC strength correctly
This needs to be set to avoid a fatal error when ECC is used.
Signed-off-by: Andre Renaud <andre@designa-electronics.com>
Signed-off-by: Simon Glass <s
at91: nand: Set up the ECC strength correctly
This needs to be set to avoid a fatal error when ECC is used.
Signed-off-by: Andre Renaud <andre@designa-electronics.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andreas Bießmann <andreas@biessmann.org>
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| 667067fa | 30-May-2016 |
Max Krummenacher <max.oss.09@gmail.com> |
nand: fix nand torture to use changed mtd api
The mtd subsystem deprecated and renamed the direct use of the mtd_info
struct's functionpointers. Instead the corresponding mtd_xxx function
should be
nand: fix nand torture to use changed mtd api
The mtd subsystem deprecated and renamed the direct use of the mtd_info
struct's functionpointers. Instead the corresponding mtd_xxx function
should be used.
See also:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3c3c10bba1e4ccb75b41442e45c1a072f6cded19
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
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