Commit Graph

49570 Commits

Author SHA1 Message Date
Heinrich Schuchardt
b095f3c85f efi_loader: implement event groups
If an event of a group event is signaled all other events of the same
group are signaled too.

Function efi_signal_event is renamed to efi_queue_event.
A new function efi_signal_event is introduced that checks if an event
belongs to a group and than signals all events of the group.
Event group notifciation is implemented for ExitBootServices,
InstallConfigurationTable, and ResetSystem.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:07 +02:00
Heinrich Schuchardt
a3a28f5f0c efi_loader: define GUIDS for event groups
Event groups are used to signal multiple events at the same time.
They are identified by GUIDs. This patch provided the predefined
GUIDs of UEFI specification 2.7.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
43bce44262 efi_loader: manage events in a linked list
Lift the limit on the number of events by using a linked list.

This also allows to have events with type == 0.

This patch is based on Rob's patch
efi_loader: fix events
https://lists.denx.de/pipermail/u-boot/2017-October/309348.html

Suggested-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
ab9efa979c efi_loader: fix formatting errors
Fix formatting errors in efi_boottime.c indicated by
scripts/checkpatch.py.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
7069515e7f efi_loader: clear signaled state in CheckEvent
CheckEvent must clear the signaled state.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
eb68b4ef31 efi_loader: check parameter in InstallConfigurationTable
Check that parameter guid is not NULL. This avoids a possible NULL
pointer exception.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
0fb4169e28 efi_loader: correct input of special keys
Don't set unicode_char if scan_code is set.
Add support for page up, page down, and insert.
Correct input of function keys.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
06c3d5b989 efi_selftest: check installation of the device tree
The unit test checks if a device tree is installed. It requires that the
'compatible' property of the root node exists. If available it prints the
'serial-number' property.

The serial-number property is derived from the environment variable
'serial#'. This can be used to check if the image_setup_libfdt() function
is executed.

A Python test is supplied. It sets a value for serial# and checks that the
selftest shows this as serial-number.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
bc4f9133ed efi_loader: support device tree for bootefi selftest
The second argument of the bootefi command should always be usable to
specify a device tree. This was missing for bootefi selftest and
bootefi hello.

Proper error handling is added.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
fc225e6082 efi_loader: check initialization of EFI subsystem is successful
Up to now errors in the initialization of the EFI subsystems was not
checked.

If any initialization fails, leave the bootefi command.

We do not retry initialization because this would require to undo all prior
initalization steps.

Suggested-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
45204b1025 efi_loader: do_bootefi_exec should always return an EFI status code
The return type of do_bootefi_exec() is efi_status_t. So in case
of an error we should always return an EFI status code.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
14ad49d100 efi_loader: efi_get_time_init should return status code
All EFI initialization functions should return a status code.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
22c793e6a2 efi_loader: exit status for efi_reset_system_init
efi_reset_system_init provides the architecture or board specific
initialization of the EFI subsystem. Errors should be caught and
signalled by a return code.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
098a6cdd1c efi_loader: simplify calling efi_init_obj_list
efi_init_obj_list() should be executed only once.

Rather than having the caller check this variable and the callee set it,
move all access to the variable inside the function. This reduces the
logic needed to call efi_init_obj_list().

Suggested-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
d7b181d57d efi_loader: consistently return efi_status_t efi_watchdog_register
efi_watchdog_register() should always return a status code and not
a boolean value.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
075d425d65 efi_loader: return efi_status_t from efi_net_register
Consistently return status codes form efi_net_register().

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
80ea9b0990 efi_loader: return efi_status_t from efi_gop_register
All initialization routines should return a status code instead of
a boolean.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
[agraf: Convert warnings to debug() prints]
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
7657152bdd efi_loader: efi_smbios_register should have a return value
Errors may occur inside efi_smbios_register().

- Return a status code.
- Remove unused variables.
- Use constants where applicable.

Suggested-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
1914e5b5d8 efi_loader: provide new doc/README.uefi
Provides information about

- usage of the bootefi command
- overview of UEFI
- interaction between U-Boot and EFI drivers

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Acked-by: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
e1214151e8 efi_loader: delete doc/README.efi
Delete README.efi. It is replaced by a further patch.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Leif Lindholm
e70f8dfa2c efi_loader: Initial EFI_DEVICE_PATH_UTILITIES_PROTOCOL
Not complete, but enough for Shell.efi and SCT.efi.  We'll implement the
rest as needed or once we have SCT running properly so there is a way to
validate the interface against the conformance test suite.

Initial skeleton written by Leif, and then implementation by Rob.

Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
[Fill initial skeleton]
Signed-off-by: Rob Clark <robdclark@gmail.com>
[Rebase on v2018.03-rc1]
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
8396e3fd63 efi_loader: remove deprecated ConsoleControlProtocol
The console control protocol is not defined in the UEFI standard.

It exists in EDK2's EdkCompatiblityPkg package. But this package
is deprecated according to
https://github.com/tianocore/tianocore.github.io/wiki/Differences-between-EDK-and-EDK-II

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Heinrich Schuchardt
28a4fd46e7 efi_loader: parameter checks for LoadImage
Add parameter checks in efi_load_image().
Check memory allocation is successful in efi_load_image().

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-04 11:00:06 +02:00
Andre Przywara
f3fed05e09 Revert "sunxi: Pine64: temporarily remove extra Pine64 non-plus DT"
Now with the MMC environment gone, we have enough space to accommodate
the Pine64 "non-plus" .dtb again.

This reverts commit 47952b8e42.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2018-04-04 14:15:40 +05:30
Andre Przywara
d14db11d76 sunxi: revert disabling of features
In January some commits were introduced to mitigate the U-Boot image
size issues we encountered on sunxi builds.
Now with the MMC environment removed we can bring them back, as we
practically don't have a size limit anymore.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2018-04-04 14:15:40 +05:30
Andre Przywara
901fb09d01 sunxi: disable direct MMC environment
Since the dawn of time for the Allwinner support in mainline U-Boot
we store the environment to the SD card and write directly at
544KB from the beginning of the device. This leads to problems when
the U-Boot proper image grows beyond 504KB and eventually overlaps.
With one release of having the environment preferably in a FAT
partition, let's now turn off the MMC variant fallback, so we get back
all the space we need to implement features.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
2018-04-04 14:15:32 +05:30
Andre Przywara
ecd0cec04c net: sun8i-emac: remove support for old binding
The original DT binding used by U-Boot's sun8i-emac driver was not really
agreed upon, and deviated from the "official" binding now used by the
kernel. Since now all U-Boot users have been converted to the new
binding, we can remove support for the old DT nodes from the driver.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2018-04-04 11:31:35 +05:30
Andre Przywara
0bb48ef243 arm: dts: sunxi: update H5 to new EMAC binding
The U-Boot driver for the sun8i-emac was using some preliminary DT
binding. Now since Linux got its own driver in v4.15 and our driver
can now cope with both bindings, let's convert the DT nodes used by the
OrangePi PC2 over to the new bindings used by the kernel.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2018-04-04 11:31:35 +05:30
Andre Przywara
e88d2a57f3 arm: dts: sunxi: update H3 to new EMAC binding
The U-Boot driver for the sun8i-emac was using some preliminary DT
binding. Now since Linux got its own driver in v4.15 and our driver
can now cope with both bindings, let's convert the DT nodes used by the
various H3 boards over to the new bindings used by the kernel.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2018-04-04 11:31:35 +05:30
Andre Przywara
06a57f656b arm: dts: sunxi: update A64 to new EMAC binding
The U-Boot driver for the sun8i-emac was using some preliminary DT
binding. Now since Linux got its own driver in v4.15 and our driver
can now cope with both bindings, let's convert the DT nodes used for the
Pine64+ board over to the new bindings used by the kernel.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2018-04-04 11:31:35 +05:30
Andre Przywara
12afd95711 net: sun8i-emac: add support for new EMAC DT binding
The Ethernet MAC used in newer Allwinner SoCs (H3, A64, H5) got an
upstream Linux driver in v4.15.
This one uses a slightly different binding from the original one used
by the U-Boot driver.
The differences to the old binding are:
- The "syscon" address is held in a separate node, referenced via a
  phandle in the "syscon" property.
- The reference to the PHY is held in a property called "phy-handle",
  not "phy".
- The PHY register is at offset 0x30 in the syscon device, not at 0.
- The internal PHY is activated when the node, which phy-handle points
  to, is a child node of an "allwinner,sun8i-h3-mdio-internal" node.

Teach the U-Boot driver how to find its resources in a "new-style" DT,
so that we can use a Linux kernel compatible DT for U-Boot as well.
This keeps support for the old binding for now, to allow a smooth
transition.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2018-04-04 11:31:35 +05:30
Andre Przywara
c034117302 net: sun8i-emac: support new pinctrl DT bindings
The Linux kernel driver for the Allwinner pin controller gained support
for generic properties, which are now also used in the DTs.
The sun8i-emac Ethernet driver for new Allwinner MACs reads the pins from
the DT, but so far only supported the old binding.
Update the parsing routine to cope with both the old and new bindings,
so that the newer DTs can be used with U-Boot and its Ethernet driver.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2018-04-04 11:31:35 +05:30
Andre Przywara
381996c5ed sunxi: gpio: add missing compatible strings
The sunxi GPIO driver is missing some compatible strings for recent
SoCs. While most of the sunxi GPIO code seems to not rely on this (and
so works anyway), the sunxi_name_to_gpio() function does and fails at
the moment (for instance when resolving the MMC CD pin name).
Add the compatible strings for the A64 and V3s, which were missing
from the list. This now covers all pinctrl nodes in our own DTs.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2018-04-04 11:31:35 +05:30
Andre Przywara
35debf8a45 sunxi: README.sunxi64: Add hint about non-debug of ARM Trusted Firmware
As we are running into issues where the final U-Boot FIT image file is
exceeding our size limit, add a hint to the README.sunxi64 file
to point out the possibility of building non-debug versions of the ATF
binary. These are about 12KB smaller than the standard debug build, and
so allow successful U-Boot builds for many boards with the Allwinner H5
SoC.
Please note that under normal circumstances the debug build is still
recommended, as it gives valuable clues in case something goes wrong in
the ATF.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2018-04-04 11:31:35 +05:30
Alexey Brodkin
948071bab4 Makefile: Disable stack-usage check for ARC
With the most recent tools for ARC (arc-2017.09) in case of
"naked" function compiler throws a warning:
---------------------------------->8-----------------------------
board/synopsys/hsdk/hsdk.c: In function 'hsdk_core_init_f':
board/synopsys/hsdk/hsdk.c:345:1: warning: stack usage computation not supported for this target
 }
 ^
---------------------------------->8-----------------------------

That happens because the compiler doesn't handle "naked" functions
as a special case where stack calculation shouldn't be done.

But for now until this is fixed in GCC to get clean buildman output
we're disabling stack-usage check for ARC.

See https://lists.denx.de/pipermail/u-boot/2018-April/324455.html
for more background.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Tom Rini <trini@konsulko.com>
2018-04-03 08:35:33 -04:00
Tom Rini
e63d142f6f Merge tag 'arc-for-2018.05' of git://git.denx.de/u-boot-arc
More ARC changes and fixes for v2018.05

 * Update of ARC tools to the most recent arc-2017.09
 * Fix for compile-time warning for AXS10x
 * Add support of platform-specific commands for HSDK
 * Add support for on-board SPI flash on HSDK
   Note though that for write support another series [1]
   is required. I hope that Jagan will be able to review and
   act on SPI flash improvement series before we get beyond RC1.

   Also note that to get clean build for HSDK we need to disable
   stack-usage check [2] as our current GCC erroneously tries to calculate
   stack-usage on a naked function which leads to warning.

[1] https://patchwork.ozlabs.org/project/uboot/list/?series=35796
[2] https://patchwork.ozlabs.org/patch/894139/
2018-04-03 08:33:15 -04:00
Miquel Raynal
e71553fe75
configs: add NAND support for NES Classic
Add NAND parameters to the Nintendo NES Classic configuration file which
features a Macronix NAND flash chip with 128kiB blocks of 2kiB pages
plus 64 OOB bytes.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
2018-04-03 12:13:36 +02:00
Miquel Raynal
748b5b34d3
sunxi: move the NAND parameters to Kconfig
Move the NAND parameters from defconfig files to Kconfig for SUNXI
architecture only. Fort now only the CHIP pro is migrated.

It would have been better to convert this defconfig entry to Kconfig for
all supported machines/architectures but it has been abandoned due to a
fairly high amount of errors reported by the moveconfig.py tool. This is
due to defines quite often being multiplications of values/other defines
not correctly handled.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
2018-04-03 12:13:32 +02:00
Miquel Raynal
b56052f4ca
sunxi: make NAND_SUNXI use ARCH_SUNXI as default in Kconfig
Remove NAND_SUNXI from the CHIP pro defconfig to be automatically
selected depending on the state of ARCH_SUNXI.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
2018-04-03 12:13:27 +02:00
Miquel Raynal
6d094d535c
sunxi: automatically select SPL_NAND_SUPPORT in Kconfig
Make SUNXI_NAND select SPL_NAND_SUPPORT in Kconfig, this limit the
number of entries to add in defconfig files when adding NAND support.

For now, the only board using it is the CHIP pro.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
2018-04-03 12:13:06 +02:00
Miquel Raynal
491feffa88
sunxi: dts: enable NAND on NES classic
Let the Nintendo NES Classic use the Macronix NAND chip on it.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
2018-04-03 12:11:56 +02:00
Miquel Raynal
663e8a9b54
sunxi: allow NAND support to be compiled for sun8i platforms
Add some clocks/PLL definitions as well as the dependency on MACH_SUN8I
in Kconfig.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
2018-04-03 12:11:52 +02:00
Miquel Raynal
136e325933
sunxi: spl: remove DMA related settings of the NAND controller
Code has been changed to do not use DMA anymore with the NAND
controller, instead PIO is used. Then, DMA-specific initialization may
be dropped.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
2018-04-03 12:11:48 +02:00
Miquel Raynal
6ddbb1e936
spl: nand: sunxi: use PIO instead of DMA
SPL support was first written to support only the earlier generations of
Allwinner SoCs, and was only really enabled on the A13 / GR8. However,
those old SoCs had a DMA engine that has been replaced since the A31 by
another DMA controller that is no longer compatible.

Since the code directly uses that DMA controller, it cannot operate
properly on the later SoCs, while the NAND controller has not changed.

There's two paths forward, the first one would have been to add support
for that DMA controller too, the second to just remove the DMA usage
entirely and rely on PIO.

The later has been chosen because CPU overload at this stage is not an
issue and it makes the driver more generic, and easier to understand.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
2018-04-03 12:11:43 +02:00
Miquel Raynal
7440bd7885
spl: nand: sunxi: declare the ecc_bytes array globally
Move the ecc_bytes array out of nand_max_ecc_strength() for future use
by nand_read_page().

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
2018-04-03 12:11:38 +02:00
Miquel Raynal
ba1c98bae2
sunxi: spl: deassert the NAND controller reset line
Ensure the NAND controller reset line is deasserted before use.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
2018-04-03 12:11:32 +02:00
Miquel Raynal
22f0aa0528
spl: nand: sunxi: make the reset column helper more generic
Prepare the future use of an helper to move the data pointer (the
column) of the NAND chip by renaming nand_reset_column() to
nand_change_column(). Resetting the column is just a matter of giving 0
as argument.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
2018-04-03 12:11:28 +02:00
Miquel Raynal
4dac80a5e9
spl: nand: sunxi: ensure enough time has passed after changing the column
When changing the column, the ONFI specification states that a minimum
time of tCCS (Change Column Setup time) must elapse between the last
address cycle is asserted on the bus and the first data cycle is
clocked. An usual value for average NANDs is 500 nanoseconds. Round it
up to 1 microsecond to be safe.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
2018-04-03 12:11:22 +02:00
Miquel Raynal
a084cb6664
spl: nand: sunxi: create an helper to handle command execution
Executing a command is matter of always doing the following sequence:
  * Waiting for the FIFO to be empty so we can fill it with the new
    command.
  * Clearing the status register.
  * Writing the command in the FIFO.
  * Waiting for the command to finish.

Add a nand_exec_cmd() helper to handle this instead of repeating the
logic through the various functions.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
2018-04-03 12:11:17 +02:00
Miquel Raynal
781e70cff1
spl: nand: sunxi: add missing status clear
It is best practice to always clear the status register before executing
a command to be sure that the status read afterwards is relevant.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
2018-04-03 12:11:13 +02:00