Merge branch 'for-next/of-bootsource'

Merge branch 'for-next/mvebu'

Merge branch 'for-next/mips'

aarch64: Add i.MX8 debug UART support ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
[andrew.smirnov@gmail.com: Added imx8_uart_setup_ll()]
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

kwbimage_v0: add support to detect and boot a mvebu v0 image ...

The differences between v0 and v1 of the mvebu kwbimage are small enough
that the function to boot such an image can be shared between both
variants.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

resource: fix iomem_resource.end for 64 bit systems ...

Fix iomem_resource.end to cover the whole address space addressable by a
variable of type resource_size_t.

Signed-off-by: Peter Mamonov <pmamonov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

common: oftree: Pass reset source and reset source instance to kernel ...

Detecting reset reason is, in some cases, a destructive operation and
in such cases it is impossible to obtain that information in the
kernel without some help from barebox.

Pass reset source and reset source instance to kernel to Linux to make
it availible to Linux userspace. This info is placeed under
/chosen/bootsource and it can be read under Linux in

/sys/firmware/devicetree/base/chosen/reset-source.

and

/sys/firmware/devicetree/base/chosen/reset-source-instance.

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

common: oftree: Pass bootsource and bootsource instance to kernel ...

Pass barebox-detected bootsource to Linux to make it availible to
Linux userspace. That information is passed as full path to the node
corresponding to the bootsource and is placed under /chosen/bootsource
and it can be read under Linux in

/sys/firmware/devicetree/base/chosen/bootsource

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

bootsource: Add bootsource alias name API ...

Add API allowing to query and override the name of the alias pointing
at DTB node representing current bootsource.

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

Merge branch 'for-next/state'

Merge branch 'for-next/serdev'

Merge branch 'for-next/misc'

Merge branch 'for-next/imx-reset-reason'

blspec: add checking of optional key machine-id ...

For filtering of Bootloader Spec entries, Bootloader Spec
specify an optional key machine-id. By set the
global.boot.machine-id variable the checking of machine-id
key in Bootloader Spec entries will be activate. If the
variable and key match, appropriate boot entry will be
booting. If it not match boot entry will be ignore and
barebox check the next boot entry.

Signed-off-by: Andreas Schmidt <mail@schmidt-andreas.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

common: reset_source: Introduce reset_source_name() ...

Introduce reset_source_name() to get string representation of current
reset source.

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

common: reset_source: Add the notion of "reset source instance" ...

In order to accomodate SoCs that come with multiple watchdogs (or any
other reset sources of the same kind) add a notion of "reset source
instance", similar to what we already have for bootsource API.

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

serdev: Allow polling interval to be adjusted at runtime ...

Due to blocking, synchronous, polling driven nature of Barebox's
serial communication handling trying to use two or more serial ports
at high (1Mbaud+) baudrates results in data loss and noticeable
perofmance degradation. This happens as soon as individual message
being sent around start exceeding HW Rx FIFO in size.

A good example of such a usecase would be using a system that has a
serdev driver (operating @ 1Mbaud+) and trying to do a X/YMODEM
transfer via serial console at comparable baudrates.

To at least partially ameliorate the problem, add code that will
expose "polling_interval" as a parameter, so that the user would have
an option of temporarily disabling (or significatly decreasing the
rate) of a given serdev's polling.

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

serdev: Add trivial blocking read function ...

Add example implementation of a trivial blocking read function as a
part of Barebox's serdev API.

NOTE: This code has not been tested against real devices, so use it at
your own risk.

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

console: Add simplified 'serdev' framework from Linux kernel ...

Port 'serdev' UART-slave deivce framework found in recent Linux
kernels (post 4.13) in order to be able to port 'serdev' slave drivers
from Linux.

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

bootsource: Add BOOTSOURCE_CAN ...

Add BOOTSOURCE_CAN for SoCs that can boot from CAN interface.

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

common: state: Add property to protect existing data ...

After an update to a newer barebox version with an enabled state
framework, existing data in storage memories could be overwritten.

Add a new property to check in front of every write task, if the meta
magic field only contains the magic number, zeros or ones.

Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/misc'

Merge branch 'for-next/fs'

rename file_operations -> cdev_operations ...

Linux also has struct file_operations which are something different.
Rename our file_operations to cdev_operations which better matches
what we have.

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

bootm: provide handlers the start of the OS image ...

The bootm code needs to read the beginning of the OS image in order to
determine the filetype. If it does so already, then we can provide the
handlers the buffer. This can help the handlers to find some image
metadata before loading the full image.

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

common: Add functions to find free RAM ...

The bootm code needs to put the Kernel image and initrd into free
RAM. Add some functions to find free RAM chunks to help this code.

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

filetype: Detect ARM aarch64 Linux images ...

ARM aarch64 Linux image have a special type. Allow to detect them.

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

ARM: aarch64: Add relocation support ...

This adds aarch64 support for relocating binaries linked with -pie.

Support is integrated into the already exisiting
relocate_to_current_adr() function which is now used for both arm32
and aarch64.

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

of: Pass barebox version to kernel ...

Pass the barebox version to Linux in case somebody is interested in it
under Linux. We use put the version under /chosen/barebox-version and
it can be read under Linux in /sys/firmware/devicetree/base/chosen/barebox-version.

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

Revert "startup: Load default environment earlier" ...

Several boards use defaultenv_append_directory() to append a board
specific envfs snippet during runtime. This only works when
defaultenv_append_directory() is called before defaultenv_load() is
exectuted. Since that was executed at the end of the start process
every initcall level could be used to append a env directory. With this
patch only initcall levels earlier than fsdevice_initcall work and
most boards do not cope with this.

Revert this patch until a better solution is found.

Reported-by: Alexander Kurz <akurz@blala.de>

This reverts commit 5b92cfc.