of_unflatten_dtb(): Check return value with IS_ERR ...

Of_unflatten_dtb returns a ERR_PTR value so checking it against NULL is
incorrect. Fix it in all of the places where this was happening.

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

ARM: vector_table: Fix creation of second level page table ...

The second level page tables can only start at a 1MiB section boundary,
so instead of calling arm_create_pte() with the high vector address
(which is 0xffff0000, not 1MiB aligned) we have to call it with
0xfff00000 to correctly create a second level page table.
The old values broke SoCs which have peripherals in the upper 1MiB
area, like for example the Atmel AT91RM9200. On these Socs we correctly
created the vector page, but the pages around it did not have a 1:1
mapping anymore which led to unreachable peripherals.

Fixes: f6b77fe9: ARM: Rework vector table setup

Reported-by: Peter Kardos <kardos.peter.sk@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Peter Kardos <kardos.peter.sk@gmail.com>

fix ARMv8 interference with ARMv7 ...

CONFIG_CPU_V8 is checked against 'y' and 'n', but the case when the
variable is unset is not considered.
This patch only checks the variable against a single value 'y' so the
logic is always coherent even when the variable is unset.

Signed-off-by: Vicente Bergas <vicencb@gmail.com>
Tested-by: Vicente Bergas <vicencb@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/imx'

Merge branch 'for-next/clps711x'

ARM: i.MX: pcm043: add a flash-header.imxcfg ...

This creates an image that can be booted via USB.

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

ARM i.MX31: Add i2c register convenience functions ...

Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM i.MX31: add SPI support ...

The i.MX31 SPI interface was refered by freescale as spi_ver_0_4 in one
of their older vendor extended linux releases. spi_ver_0_4 differs only
in minor aspects to spi_ver_0_7 (i.MX35) which is already supported by
barebox.
Regarding barebox, the differences boil down to the location and length
of the CHIP SELECT and BIT COUNT/BURST LENGTH elements of CONREG. The
spi_ver_0_4 variant is limited to single word bursts with a maximum of
32 bits_per_word.

Add support for the i.MX31 SPI interface to the barebox spi_ver_0_7
implementation.

Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: nitrogen: rename to nitrogen6 ...

Now that the MAX variant of the board is also supported by the
same code, rename the board directory to the more generic nitrogen6.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: add support for Nitrogen6MAX QP variant ...

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: nitrogen6x: disable address mirroring ...

The Nitrogen boards don't need it and it's actively wrong
on the 4GB variants of those boards.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: nitrogen6x: use imx6q_barebox_entry ...

Saves some boilerplate code by calculating the DRAM size
automatically.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: nitrogen6x: use upstream DTs ...

This gets rid of the (mostly) stub top level DTs in barebox
and switches the compatible to the proper "boundary" one.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: imx: add QP as supported i.MX6 variant ...

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: dts: i.MX6: update RIoTboard device tree ...

Barebox and kernel version diverged therefore bring the device tree up to date
with respect to the kernel being the reference.

Signed-off-by: Ulrich Ölmann <u.oelmann@pengutronix.de>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

include: Move bulk of boot.h to bootm.h ...

The majority of the stuff currently in include/boot.h is about bootm
code implemented common/bootm.c. To be more consistent move it to a
new file include/bootm.h.

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

i.MX: ocotp: Register regmap against orignal device ...

Register regmap against orignal device passed to probe, this way further
in the code/call-chain cdev's device_node will be correctly populated
and it will be discoverable via cdev_by_device_node()

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

ARM: clps711x: clep7212: Register board env during runtime ...

Register the board specific environment during runtime using
defaultenv_append_directory(). Also this patch updates default config.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: clps711x: Sync CLK susbsystem with kernel ...

Refactoring of CLPS711X CLK driver code to be compatible with
the current kernel. This change a bit makes easy of initializing
devices using CLKs.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: clps711x: clep7212: Increase the wait state for chip select 3 ...

CS3 is used for a variety of external bus devices.
Increase the wait state for this chip select for the possibility
of more widespread use.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: phytec-som-am335x: Remove kernel and oftree partiton in NAND ...

We store kernel and oftree in static UBI volumes now. No need
for seperate partitions any more.

Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/ubi'

Merge branch 'for-next/omap'

Merge branch 'for-next/misc'

Merge branch 'for-next/mips'

Merge branch 'for-next/imx'

Merge branch 'for-next/arm64'

Merge branch 'for-next/arm'

ARM i.MX35: Add support for the Amazon Kindle3 ...

The Amazon Model No. D00901 Kindle3 is an E-Book reader based on the
i.MX35 SOC. The device boots in internal boot mode from a build-in eMMC,
alternatively the device may be set into USB-downloader mode when the
Vol+ key is pressed on startup.

Add support for this device and make barebox a drop-in replacement for
the factory shipped u-boot image.
Constraints for the use as drop-in replacement:
- imximg header (offset 0x400) has a maximum size of 2kB minus 16 byte
  since the last 16 bytes are used to store a vendor specific hardware
  desctription identifier
- the bootloader space (application plus env) is limited to 256kB minus
  16 bytes when installed with offset of 4kB (the u-boot offset was 3kB).
  A vendor specific device identifier is stored in the gap between
  application and kernel. The vendor specific identifiers should not
  be overwritten.

Notable features:
- Support for eMMC, USB, UART, I2C, SPI and Keys (except keyboard)
- Full support for vendor specific ATAGs
- usbserial barebox console access by pressing Select button at startup,
  alternatively full console support on connector J14.

Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: imx_defconfig: enable NAND_IMX_BBM and NAND_ALLOW_ERASE_BAD ...

The first is important for imx systems with NAND. The second is a useful
debug aid that doesn't change behaviour without being explicitly enabled
at runtime. So both should be safe.

The other changes result from MFD_MC13XXX and SPI_IMX being selected by
MACH_PCM038 since 4bd07a103982 ("arm: imx: select MFD_MC13XXX for all
boards that need it") and a move of a few Kconfig definitions in
7839011f61c0 ("bootm: Move bootm options to common/Kconfig").

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