Merge branch 'for-next/restart'

restart: replace reset_cpu with registered restart handlers ...

This replaces the reset_cpu() function which every SoC or board must
provide with registered handlers. This makes it possible to have multiple
reset functions for boards which have multiple ways to reset the machine.
Also boards which have no way at all to reset the machine no longer
have to provide a dummy reset_cpu() function.

The problem this solves is that some machines have external PMICs or
similar to reset the system which have to be preferred over the
internal SoC reset, because the PMIC can reset not only the SoC but also
the external devices.

To pick the right way to reset a machine each handler has a priority. The
default priority is 100 and all currently existing restart handlers are
registered with this priority. of_get_restart_priority() allows to retrieve
the priority from the device tree which makes it possible for boards to
give certain restart handlers a higher priority in order to use this one
instead of the default one.

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

gpio: Drop asm-generic/gpio.h ...

Since we no longer have custom gpio function prototypes we can
drop the prototypes from asm-generic/gpio.h can add them to
include/gpio.h instead. While at it add static inline dummy wrappers
for !CONFIG_GENERIC_GPIO so that code using gpios can compile without
gpio support.

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

Merge branch 'for-next/spd'

Merge branch 'for-next/ppc'

Merge branch 'for-next/exitcall'

PPC/PCM030: provide EEPROM support to read factory settings ...

Above the 0x800 offset the manufacturer provides the board type, a serial
number and the MAC as three simple strings. Extract these strings, provide
their value as global variables and set the MAC into the ethernet unit.

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

PPC/MPC5200: re-use the IMX I2C master driver for MPC5200 ...

This IP core is shared between many FSL SoCs. The MPC5200 provides this
core as well.

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

PPC/MPC52xx: unify header file name for clock API ...

In preparation to re-use the i.MX I2C driver for the MPC5200 SoC use
clock.h instead of clocks.h for the clock API.

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

PPC/PCM030: enable USB/OHCI pin support ...

This change in the port config register enables the USB/OHCI support and
makes USB work on the PCM030's regular development baseboard.

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

PPC/PCM030: fix reference clock ...

In order to enable and use USB/OHCI on the MPC5200 the USB PLL register must be
set.

It's not easy to find a correct value for this register, it seems it depends on
the used external reference frequency and some other 'magic' things. There are
some values out in the wild for the 33,333333 MHz and 33,333000 MHz reference
frequency case, but they are not consistent over the boards.

The value used here in this change for the USB PLL register is from the first
days of support for this platform and works at least on the reference
baseboard.

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

PPC/PCM030: remove nowhere used definitions ...

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

Devicetree/PPC: fix devicetree's fixup ...

Currently Barebox fails to boot a kernel/devicetree pair on PowerPC.

With of_find_node_by_path() the framework uses a global variable to find
the root node and fails. With of_find_node_by_path_from() and forwarding
the 'root' parameter it works again as expected.

This fixes the following error message at run-time:

Loading U-Boot uImage '/tmp/tftpcmd/kernel'
Loading devicetree from '/tmp/tftpcmd/oftree'
bootm: No devicetree given.
handler failed with: Invalid argument

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

exitcall: Add exitcall infrastructure ...

exitcall infrastructure is based on initcall infrastructure.
It allows to have and use exit call hooks on barebox shutdown.

Signed-off-by: Herve Codina <Herve.CODINA@celad.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

common: move DDR_SPD to common/Kconfig ...

This patch makes it possible to use ddr_spd-related
routines in any arch not only in ppc.

Signed-off-by: Alexander Smirnov <alllecs@yandex.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

treewide: replace __inline__ with inline ...

inline is preferred over __inline__

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

ppc: replace extern inline with static inline ...

Replaced in the kernel a long time ago, not compatible with gcc5.

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

PPC: asm/bitops.h: drop unused ext2* and minix* stuff ...

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

ppc: use generic posix_types.h ...

Use generic asm-generic/posix_types.h instead of repeating the
typedefs.

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

introduce bitsperlong.h for remaining architectures ...

This introduces the bitsperlong.h file for the remaining architectures.
It's purpose is to define BITS_PER_LONG which in the next step can be used
by a generic posix_types.h file.

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

dma: Use generic place for dma_addr_t typedef ...

Instead of letting all architectures define their own dma_addr_t use
a common place in include/linux/types.h and use a Kconfig symbol that
architectures can select to define the width of dma_addr_t. The same
is done in the Kernel.

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

Use linux.bootargs.console for specifying the console ...

Use linux.bootargs.console to specify the console since this
is the variable the console code uses for automatically assigning
a console.

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

phyCORE-MPC5200-Tiny: switch to the new environment template ...

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

powerpc: include <linux/stringify.h> to avoid dupulicated defines ...

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/misc'

sizes.h: move include/sizes.h to include/linux/sizes.h ...

This file originates in Linux.  Linux has it under include/linux/
directory since commit dccd2304cc90.
Let's move it to the same place as well in barebox.

This commit was generated by the following commands:

  find -name '*.[chS]' | xargs sed -i -e 's:<sizes.h>:<linux/sizes.h>:'
  git mv include/sizes.h include/linux/

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

kbuild: move asm-offsets.h rule to ./Kbuild ...

Currently, MIPS is the only architecture that needs
include/generated/asm-offsets.h, but we have got ./Kbuild file now.

It is a good reason to move asm-offsets.h rule from arch/mips/Makefile
to ./Kbuild and add dummy asm-offsets.c for the other architectures.
asm-offsets.h would be useful for all the architectures.

This commit does not implement include/generated/bounds.h,
but if necessary, it is easy to implement it.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

treewide: Reuse init_clock() return value for clocksource drivers ...

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

arch/MPC5xxx: fix linker script for MPC5200 ...

Without this change the barebox.bin ends up with:

00000000  79 ba 8f 79 00 00 00 00  75 39 6e d1 74 27 00 00  |y..y....u9n.t'..|
00000010  01 00 00 00 00 00 00 00  28 80 ad db 8d c7 a8 67  |........(......g|
00000020  4e 07 00 00 10 00 00 00  2f 63 6f 6e 66 69 67 00  |N......./config.|
00000030  8d c7 a8 68 ff 01 00 00  23 21 2f 62 69 6e 2f 73  |...h....#!/bin/s|
00000040  68 0a 0a 68 6f 73 74 6e  61 6d 65 3d 46 49 58 4d  |h..hostname=FIXM|
00000050  45 0a 69 66 20 5b 20 2d  7a 20 22 24 75 73 65 72  |E.if [ -z "$user|
00000060  22 20 5d 3b 20 74 68 65  6e 0a 23 09 75 73 65 72  |" ]; then.#.user|
00000070  3d 0a 66 69 0a 0a 23 20  45 6e 74 65 72 20 4d 41  |=.fi..# Enter MA|
[...]

which means it starts with the default environment instead of the reset vector area.

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

Add some .gitignore files ...

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