Merge branch 'for-next/stm32'

Merge branch 'for-next/pstore'

Merge branch 'for-next/misc'

Merge branch 'for-next/clk'

lib: Add missing arguments to memcpy_parse_options() ...

Memcpy use-case differs from that of memcmp in default access type and
destination file mode. This was missed in original commit that
introduced memcpy_parse_options(). Add said parameters to
memcpy_parse_options(), so the can be correctly specified depending on
the use-case.

Fixes: ddf4cca339 ("commands: Introduce memcpy_parse_options()")
Reported-by: Peter Mamonov <pmamonov@gmail.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

pstore: remove unused code ...

pstore_info->write() is unused, remove the code implementing it.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

pstore: Only capture log messages ...

With this pstore only captures barebox log messages printed with pr_*
and dev_*, but no longer anything printed with printf and friends.

When capturing the barebox output with pstore only the log messages are
of interest, but not the ones printed with printf and certainly not
the things typed interactively on the command line. These are logged
currently because we register pstore as a barebox console. Instead, hook
into pr_puts which only outputs the barebox log messages.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clk: divider: export clk_div_mask() helper ...

commit e6d3cc7 Linux upstream.

  clk: divider: export clk_div_mask() helper

  Export clk_div_mask() in clk-provider header so every clock providers
  derived from the generic clock divider may share the definition instead
  of redefining it.

  Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
  Signed-off-by: Michael Turquette <mturquette@baylibre.com>
  Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

startup: Factor out the autoboot counter to separate function ...

The autoboot countdown is part of the init function. This patch factors
out this code to a separate function to allow boards to call it at a
different time. Also boards can set the autoboot state manually in case
they have its own idea how to interrupt the autoboot process.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clk: divider: Make generic for usage elsewhere ...

commit bca9690 Linux upstream adjusted
to current Barebox codebase.

  clk: divider: Make generic for usage elsewhere

  Some devices don't use mmio to interact with dividers. Split out the
  logic from the register read/write parts so that we can reuse the
  division logic elsewhere.

  Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
  Tested-by: Kenneth Westfield <kwestfie@codeaurora.org>
  Signed-off-by: Michael Turquette <mturquette@linaro.org>

Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mfd: syscon: add syscon_regmap_lookup_by_phandle() ...

This function is handy when syscon is passed as phandle to device_node
property.

Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

pinctrl: add driver for STM32 GPIO and pin multiplexer ...

This adds driver support for the 12 GPIO banks on the STM32MP157.
As they are accessible to both the Cortex-A cores as well as the Cortex-M
core, modifications to these are protected by a hardware spinlock
and clocks are enabled/disabled as required.

All register fiddling done by the driver is collected in <soc/stm32/gpio.h>,
so future PBL code may make use of it as well to chainload barebox proper.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

driver: add stubs for hardware spinlocks ...

Some STM32MP Linux drivers, which could be ported to barebox as part of
improved second stage barebox support, are using hardware spinlocks to
coordinate access between the three processors. While barebox only
uses one of the two Cortex-A cores, spin locks may still be necessary
because of firmware loaded unto the Cortex-M.

To ease porting these drivers, without having to import the hw spinlock
driver now, add stubs for the functions.

The stubs will we be reused when CONFIG_HWSPINLOCK is introduced,
but is disabled in config. The API is oriented after the implementation
in U-Boot.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

gpiolib: add gpio_get_chip helper ...

Pinctrl nodes adhering to the generic pinctrl bindings may contain
properties like input-low/input-high, which require pinctrl_ops.set_state
to have a handle on the relevant gpio chip.

Currently this would lead to code duplication: Both the pinctrl driver
and gpiolib will need to store a list of registered gpiochips.

Avoid this by providing a helper to query the registered gpio_chip
given a gpio's number.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

reset_source: add new Brownout reset (BOR) source ...

The STM32MP1 can report brown out as reason for a reset,
which doesn't fit into existing reasons. Thus add a new
one to the enumeration.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

treewide: remove stale mentions of CONFIG_OF in comments ...

barebox doesn't define a CONFIG_OF kconfig option, but CONFIG_OFTREE
for the device tree handling and CONFIG_OFDEVICE for probing devices
out of the device tree.

Replace comment mentions of CONFIG_OF with mentions of either as
appropriate.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/ubootenv'

Merge branch 'for-next/misc'

Merge branch 'for-next/arm'

drivers: Introduce late_platform_driver() ...

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

filetype: Allow specifying cdev's filetype explicitly ...

Allow specifying cdev's filetype explicitly to support the cases where
the type of a cdev is known apriori, yet cannot be determined by
reading the cdev's content.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

filetype: Add "U-Boot environmemnt variable data" filetype ...

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: Initial OP-TEE support ...

This adds initial support for OP-TEE, see https://www.op-tee.org/

barebox starts in secure mode as usual. When booting a kernel
the bootm code also loads the optee_os binary. Instead of jumping
into the kernel barebox jumps into the optee_os binary and puts
the kernel execution address into the lr register. OP-TEE then
jumps into the kernel in nonsecure mode.

The optee_os binary is passed with the -t option to bootm or
with global.bootm.tee.

Optionally OP-TEE can be compiled into barebox using the builtin firmware
feature. Enable the Kconfig option and place or link your tee binary as
optee.bin into the firmware directory.

The amount of SDRAM which is kept free for OP-TEE is configurable.

This patch was tested on a i.MX6 Nitrogen6x board.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

commands: Introduce memcpy_parse_options() ...

Both memcpy and memcmp have identical options, so in order to share
code between them, introduce memcpy_parse_options() and change both
tools to use it.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

libbb: Drop simple_itoa() ...

Hush is the only one user of simple_itoa() and the code there can be
re-implemented using snprintf(). Change the code to get rid of
simple_itoa().

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

driver: left shift 1U instead of 1 in bitmask for consistency ...

The first two masks use 1U already, so follow suit.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

serdev: Do not call .receive_buf() callback recursively ...

Code implementing .receive_buf() callback can potentially call
serdev_device_write(), which will call serdev_device_poller(). We need
to make sure that such a call is a no-op in order to prevent
corrupting shared data buffer as well as breaking .receive_buf
callback that most likely does not expect that to happen.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Tested-by: Cory Tusar <cory.tusar@zii.aero>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/ubifs'

Merge branch 'for-next/qspi'

Merge branch 'for-next/layerscape'