Merge branch 'for-next/pstore'

Merge branch 'for-next/mtd'

mtd: nand: Add erased page bitflip check helper functions ...

This adds the bitflip check helper functions from the kernel. They are
used to check for bitflips in erased pages and correct them in the
buffer so that UBI can work with it. Unfortunately most nand controllers
do not have ECC for erased pages and don't do this on their own.

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

linux/barebox-wrapper: Silence gcc5 warning ...

gcc5 warns about using flags uninitialized in spin_lock_irqsave,
although it could look into the static inline spin_lock_irqsave
implementation and see it's not used at all. An empty define instead
of the static inline wrapper would lead to a "unused variable" warning.
Let's create a macro and fake some usage of the flags variable. This
probably helps until gcc6 is out.

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

fs: Add pstore filesystem ...

pstore is a persistent storage filesystem used for RAMOOPS. It is used
to store console logs, panics, ftrace and other information in case of a
crash/panic/oops/reboot.

pstore is implemented for barebox as a read-only filesystem at the
moment. It may be extended later on. The idea is to provide a way to
extract essential data from the last running kernel.

Most of the code is copied from the kernel. However this is only a
lightweight implementation without real write support yet.

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

lib: Import reed solomon code from kernel ...

reed solomon code is used by RAMOOPS to check and fix data stored in
volatile memory.

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

log2: Add missing __rounddown_pow_of_two() ...

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

Merge branch 'for-next/reset'

reset: Add gpio reset support ...

If a device has the reset-gpios property we can support this through
the reset controller API, so drivers do not have to open code the
support for this property each time themselves as done a few dozen times
in the kernel.

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

reset: Remove unused *_optional functions ...

Since we now have dummy reset controllers we no longer need the
*_optional functions. These have been unused anyway, so just remove
them.

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

font: fbconsole: add custom font supports ...

Signed-off-by: Du Huanpeng <u74147@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

fbconsole: register fonts dynamically ...

Instead of having a fixed array of fonts register the fonts dynamically.
This allows easier adding of fonts to the tree since only one file per
font has to be added and no other files modified.

Currently we have to register the fonts very early before the first
framebuffer is registered. This is because of our limited
dev_add_param_enum() which wants to know the number of elements when
called, so we can't add elements once after we've called
dev_add_param_enum(). Maybe a dev_add_param_array() has to be created
whithout this limitation, but that's left for a future exercise.

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

Merge branch 'for-next/usb'

mtd nand: added 'bits_per_cell' property ...

This one is available in the kernel and used by the denali driver

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

endian: sync {big,little}_endian.h with linux-4.2 ...

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

endian: Always evaluate arguments ...

This patch is based on

    commit 3d6f4a2
    Author: David Miller <davem@davemloft.net>
    Date:   Thu Jul 24 23:38:31 2008 -0700

        endian: Always evaluate arguments.

In barebox.git/drivers/usb/core/usb.c,
function usb_parse_config() we have had

    le16_to_cpus(&(dev->config.wTotalLength));

which evaluates to "do { } while (0)" on little endian,
so struct usb_configuration field misuse will never
be discovered on little endian.

Therefore, always evaluate the arguments to nop endian
transformation operations.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: m25p80: make it possible to use large blocks if desired ...

Some SPI NOR flashes support 4K erase blocks. 4K erase blocks do not
work with UBIFS which needs a minimum erase block size of 15360 bytes.
Also bigger sectors are faster to erase. This patch adds a device tree
option to use the bigger blocks instead of the default 4K blocks.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

Merge branch 'for-next/net'

Merge branch 'for-next/misc'

net: phy: at803x: Use genphy_config_init ...

Based on the Linux commit:

6ff01db net: phy: at803x: use genphy_config_init()

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

fonts: Add 7x14 font ...

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

lib/fonts: add "MINI4x6" font ...

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

import lib/fonts framework from linux kernel ...

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

build: update compiler*.h to newest versions ...

This adds the support for gcc 5.x and clang.

Signed-off-by: Alexey Galakhov <agalakhov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/blspec'

Merge branch 'for-next/misc'

treewide: replace __inline__ with inline ...

inline is preferred over __inline__

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

mtd: Make devname argument to add_mtd_device const ...

add_mtd_device duplicates the string where necessary, so make it
const.

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

mtd: Add mtd concat support ...

The mtd concat layer supports concatenating several MTD devices
into a single one. This is nearly as-is from the corresponding
Kernel code.

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

fs: ubifs: Implement Linux rootarg ...

Add the parameter to boot from ubifs fileystems. This assumes that
there will be only one UBI device registered in the kernel, otherwise
there is no way to predict the ubi number.

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