Merge branch 'for-next/misc'

Merge branch 'for-next/mips'

Merge branch 'for-next/imx'

Merge branch 'for-next/fsanitize'

Merge branch 'for-next/for-master'

Merge branch 'for-next/dts'

Merge branch 'for-next/arm'

Release v2019.09.0 ...

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

sandbox: support Address and UndefinedBehavior sanitizers ...

For the hosted implementation, we just need to pass the appropriate
options at compile and link time. No further arch-specific
code needed.

Because we define our own handlers in lib/ubsan.c, linking against
libubsan isn't strictly required. We do it anyway on sandbox, so we can
use the backtrace functionality within.

Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

sandbox: use sanitizer unwind for dump_stack if available ...

The sanitize unwind looks pretty and is just a function call away if we
are compiling with KASAN or UBSAN. Use it if available.

Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

common: add generic CONFIG_KASAN option ...

-fsanitize=[kernel-]address-sanitizer allows compile-time instrumentation
of memory accesses to detect some classes of runtime undefined behavior.

In preparation for allowing arches to provide infrastructure in support
of this feature, add the generic KASAN options.

These are only shown in the debug menu when the arch selects the
appropriate symbol. The option is named equally to their Linux counterparts.

Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

commands: add intentionally UB triggering ubsan command ...

For testing whether ubsan works, triggering undefined behavior to detect
is a nice development aid. Port the Linux test_ubsan module to barebox
as a command.

barebox@Embest MarS Board i.MX6Dual:/ ubsan shift
ERROR: ================================================================================
ERROR: UBSAN: Undefined behaviour in commands/ubsan.c:53:7
ERROR: shift exponent -1 is negative
WARNING: [<4fd77325>] (unwind_backtrace+0x1/0x68) from [<4fd5bc0f>] (ubsan_epilogue.isra.6+0x7/0x20)
WARNING: [<4fd5bc0f>] (ubsan_epilogue.isra.6+0x7/0x20) from [<4fd5bf8d>] (__ubsan_handle_shift_out_of_bounds+0x49/0xb8)
WARNING: [<4fd5bf8d>] (__ubsan_handle_shift_out_of_bounds+0x49/0xb8) from [<4fd51ed7>] (test_ubsan_shift_out_of_bounds+0x23/0x2c)
WARNING: [<4fd51ed7>] (test_ubsan_shift_out_of_bounds+0x23/0x2c) from [<4fd51fd7>] (do_ubsan+0x3b/0x54)
WARNING: [<4fd51fd7>] (do_ubsan+0x3b/0x54) from [<4fd03a4d>] (execute_command+0x21/0x48)
WARNING: [<4fd03a4d>] (execute_command+0x21/0x48) from [<4fd09591>] (run_list_real+0x5b5/0x610)
WARNING: [<4fd09591>] (run_list_real+0x5b5/0x610) from [<4fd08ed9>] (parse_stream_outer+0x105/0x164)
WARNING: [<4fd08ed9>] (parse_stream_outer+0x105/0x164) from [<4fd097b1>] (run_shell+0x35/0x64)
WARNING: [<4fd097b1>] (run_shell+0x35/0x64) from [<4fd00d43>] (run_init+0x8f/0x168)
WARNING: [<4fd00d43>] (run_init+0x8f/0x168) from [<4fd00e35>] (start_barebox+0x19/0x54)
WARNING: [<4fd00e35>] (start_barebox+0x19/0x54) from [<4fd75843>] (barebox_non_pbl_start+0xc7/0x108)
WARNING: [<4fd75843>] (barebox_non_pbl_start+0xc7/0x108) from [<4fd00005>] (__bare_init_start+0x1/0xc)
ERROR: ================================================================================

Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

common: add generic CONFIG_UBSAN plumbing ...

-fsanitize=undefined allows compile-time instrumentation of code to detect
some classes of runtime undefined behavior.

In preparation for allowing arches to provide infrastructure in support
of this feature, add some generic UBSAN options and associated plumbing.

These are only shown in the debug menu when the arch selects the
appropriate symbol. The option is named equally to their Linux counterparts.

Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

edit: replace ASCII codes by symbolic names ...

Code has some magic numbers, replace them. This has the added benefit that
at least the touched lines are now charset-agnostic.

Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

input: add handler for reset and power key input events ...

Kernel device trees may indicate linux,code = KEY_POWER or KEY_RESTART,
mostly for gpio-keys. Make barebox able to act on them by registering an
appropriate input notifier.

Suggested-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

param: make dev_add_param_string_fixed value parameter const ...

The function is so far unused and the parameter's only use is to be passed
as argument to dev_add_param_fixed which is const as well.

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

gpio: iopoll: implement gpio_poll_timeout_us ...

Sometimes we need to wait for state change on a GPIO, provide a helper
for future code to do this.

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

console: set default console_device devname ...

Some commands (loadb/x/y) rely on console_get_by_name, which searches the list
of console devices based on console_device->devname. However, some serial
drivers do not set devname, meaning that their respective console_devices can
never be found. During console_register, ensure that a default devname is set
if one is not already explicitly set.

Signed-off-by: David Dgien <dgienda125@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: zii-vf610-dev: Re-align SCU4's hostname with upstream kernel ...

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

ARM: dts: imx8mq-zii-ultra: Add switch EEPROM alias ...

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

ARM: dts: vf610-zii-scu4-aib: Expose fiber EEPROM modules ...

EEPROM on a fiber optic modules present on SCU4 can be exposed as a
AT24 compatible device. Add corresponding DT node needed for that.

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

ARM: dts: vf610-zii-cfu1: Expose fiber optic module EEPROM ...

EEPROM on a fiber optic module present on CFU1 can be exposed as a
AT24 compatible device. Add corresponding DT node needed for that.

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

ARM: dts: vf610-zii-cfu1: Configure "STATUS" LED as heartbeat ...

Configure "STATUS" LED as heartbeat in addition to "DEBUG" LED not
exposed on the front panel. This way it becomes a bit easier to see
what part of the boot process the device is at.

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

ARM: dts: vf610-zii-dev-rev-c: Fix DSPI flash node name ...

Latest upstream DTS renamed the node to flash@0, so we need to follow
suit.

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

ARM: dts: vf610-zii-dev-rev-b: Fix SPI flash node name ...

Latest upstream DTS renamed the node to flash@0, so we need to follow
suit.

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

Documentation: Provide default values for version/release ...

Provide default values for version/release so it would be possible to
run Sphinx outside of the build system. Useful for rst-sphinx backend
of flycheck in Emacs, for example.

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

i2c/pca954x: Initialize the mux to disconnected state ...

Port of a Linux kernel commit cd823db

    pca954x power-on default is channel 0 connected. If multiple pca954x
    muxes are connected to the same physical I2C bus, the parent bus will
    see channel 0 devices behind both muxes by default. This is bad.

    Scenario:
                -- pca954x @ 0x70 -- ch 0 (I2C-bus-101) -- EEPROM @ 0x50
                |
    I2C-bus-1 ---
                |
                -- pca954x @ 0x71 -- ch 0 (I2C-bus-111) -- EEPROM @ 0x50

    1. Load I2C bus driver: creates I2C-bus-1
    2. Load pca954x driver: creates virtual I2C-bus-101 and I2C-bus-111
    3. Load eeprom driver
    4. Try to read EEPROM @ 0x50 on I2C-bus-101. The transaction will also bleed
       onto I2C-bus-111 because pca954x @ 0x71 channel 0 is connected by default.

    Fix: Initialize pca954x to disconnected state in pca954x_probe()

    Signed-off-by: Petri Gynther <pgynther@google.com>
    Signed-off-by: Jean Delvare <khali@linux-fr.org>
    Cc: stable@kernel.org

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

mfd: rave-sp: Emulate firmware/bootloader mode reporting on RDU2 ...

Add code to emulate firmware/bootloader mode reporting via
"general_status" field on RDU2. This is needed to correctly report if
RAVE SP is in bootloader of application mode during startup.

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

ARM: Cleanup stack offset cargo cult ...

Most callers of arm_setup_stack substract a fixed offset of 8, 12 or 16
bytes from the stack top. This is unnecessary as on ARM we have a stack
that decrements before storing values. Substracting this offset probably
goes back to the U-Boot version we forked from. Stop this now.

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

eeprom: at24: Select NVMEM as a dependency ...

NVMEM subsystem is now a mandatory dependecy for EEPROM_AT24.

Fixes: 815e7140de ("eeprom: at24: Convert the driver to NVMEM")
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>