pbl: Move piggy verification into pbl_barebox_uncompress() ...

piggy verification is a direct prerequisite of uncompressing the
piggydata, so move the verification there.

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

Merge branch 'for-next/stm32'

Merge branch 'for-next/mtd-gpmi-nand'

Merge branch 'for-next/imx8-hab'

serial: i.MX: Add i.MX1 lowlevel init function ...

The i.MX1 uart must be initialized slightly differently than on other
SoCs. Add an i.MX1 specific init function.

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

stdio: puts and putchar static inline wrappers ...

Add static inline wrappers for puts and putchar. This allows the usage
of puts and putchar within the PBL even if the PBL_CONSOLE is disabled.

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

pbl: add sha256 and piggy verification to PBL ...

Extract the necessary functions from sha256 into a PBL headder and add a
verification function to the PBL. The function will be called before the
individual architectures decompress functions is run.

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

sections: fix macro for barebox_pbl_size ...

On ARM64 this did not contain the expected barebox_pbl size. Rework this
to be a substraction between __piggydata_start and __image_start, which
should cover the whole PBL.

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

mtd: nand: Add function to parse device tree properties ...

This adds nand_of_parse_node() which can be used to parse generic
NAND device properties. Not very complete yet, but it's a start.

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

mtd: nand-mxs: change API between NAND driver and fcb code ...

The imx-bbu-nand-fcb update handler code calls into the NAND driver
to get the ecc strength and bad block marker position. Change the
API so that only a single function is necessary and not three functions.
Also in future the ecc strength will be configurable via device tree.
This means static parameters like page size / oob size are no longer
enough to calculate the ecc strength and so we store a pointer to our
mtd_info struct in a static global variable.

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

crypto: caam - Always do rng selftest ...

The caam rng selftest is known to be broken in several i.MX
incarnations. To be on the safe side just unconditionally execute
it rather than trying to guess from HAB failure events if this is
necessary.
We can only do the selftest once per boot though, doing it a second time
yields an error:

rng_self_test: Job Error:
2101000.jr0@1000.of: 20001953: CCB: desc idx 25: RNG: Instantiate

so only do the test when rng is not yet initialized as tested with the
RDSTA_IFx status bits.

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

filetype: add STM32 image type ...

Both STM32MP BootROM and TF-A first stage expect subsequent bootloader
stages to feature a specific 256-byte long STM32 file header.
Add detection of the header to file_detect_type().

While there's only one version of the header so far, identify the new
header as v1 anyway, so new versions can be unambiguously added.

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

gpio: allow for arch-specific ARCH_NR_GPIOS > 256 ...

Some architectures have non-contiguous GPIO ranges where some GPIOs can
have identifiers exceeding the hardcoded ARCH_NR_GPIOs of 256.

One such example is the STM32MP, whose gpioz controller has identifiers
that go up to ('Z' - 'A' + 1) * 0x10 - 1 = 415.
Instead of increasing the array size for all architectures or doing
some sort of packing, allow architecture to define their own overriding
CONFIG_ARCH_NR_GPIO like the kernel does.

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

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'