sunxi: initial generic sun7i cpu, board and start of day support

This has been stripped back for mainlining and supports only sun7i. These
changes are not useful by themselves but are split out to make the patch sizes
more manageable.

As well as the following signed-off-by the sunxi branch shows commits to these
files authored by the following:
  Almo Nito
  Carl van Schaik
  FUKAUMI Naoki
  hehopmajieh
  j
  Sergey Lapin
  Tom Cubie

Signed-off-by: Aleksei Mamlin <mamlinav@gmail.com>
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Emilio López <emilio@elopez.com.ar>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Henrik Nordstrom <henrik@henriknordstrom.net>
Signed-off-by: Jens Kuske <jenskuske@gmail.com>
Signed-off-by: Luc Verhaegen <libv@skynet.be>
Signed-off-by: Luke Leighton <lkcl@lkcl.net>
Signed-off-by: Oliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Patrick Wood <patrickhwood@gmail.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Wills Wang <wills.wang.open@gmail.com>
Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
---
v2: Based on u-boot-sunxi.git#sunxi d9aa5dd3d15c "sunxi: mmc:
checkpatch whitespace fixes" with v2014.04-rc2 merged in:
  - just init dram once
  - remove clock ramping until power control is implemented
  - add CONFIG_SUN7I to simplify future SUN?I support.
  - fix a typo

v1: Based on u-boot-sunxi.git#sunxi commit d854c4de2f57 "arm: Handle .gnu.hash
section in ldscripts" vs v2014.01.
sunxi: generic sun7i build infrastructure.

This has been stripped back for mainlining and supports only sun7i booting via
FEL mode. These changes are not useful by themselves but are split out to make
the patch sizes more manageable.

As well as the following signed-off-by the sunxi branch shows commits to these
files authored by the following:
  Almo Nito
  Carl van Schaik
  FUKAUMI Naoki
  hehopmajieh
  j
  Sergey Lapin
  Tom Cubie

Signed-off-by: Adam Sampson <ats@offog.org>
Signed-off-by: Aleksei Mamlin <mamlinav@gmail.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Emilio López <emilio@elopez.com.ar>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Henrik Nordstrom <henrik@henriknordstrom.net>
Signed-off-by: Jens Kuske <jenskuske@gmail.com>
Signed-off-by: Luc Verhaegen <libv@skynet.be>
Signed-off-by: Luke Leighton <lkcl@lkcl.net>
Signed-off-by: Oliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Patrick Wood <patrickhwood@gmail.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Wills Wang <wills.wang.open@gmail.com>
Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
---
v2: Based on u-boot-sunxi.git#sunxi d9aa5dd3d15c "sunxi: mmc:
checkpatch whitespace fixes" with v2014.04-rc2 merged in:
    - sunxi-common.h updates, including pulling some command additions back
      from the non-FEL patch and switchin to bootm_size not BOOTMAPSZ

v1: Based on u-boot-sunxi.git#sunxi commit d854c4de2f57 "arm: Handle .gnu.hash
section in ldscripts" vs v2014.01.
sunxi: add support for Cubietruck booting in FEL mode

Signed-off-by: Oliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Reviewed-by: Tom Rini <trini@ti.com>
---
v2: Based on u-boot-sunxi.git#sunxi d9aa5dd3d15c "sunxi: mmc:
checkpatch whitespace fixes" with v2014.04-rc2 merged in.

v1: Based on u-boot-sunxi.git#sunxi commit d854c4de2f57 "arm: Handle .gnu.hash
section in ldscripts" vs v2014.01.
sunxi: add gmac Ethernet support

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Jens Kuske <jenskuske@gmail.com>
Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
---
v2: Based on u-boot-sunxi.git#sunxi d9aa5dd3d15c "sunxi: mmc:
checkpatch whitespace fixes" with v2014.04-rc2 merged in:
    - drop accidentally doubled hunk
    - use gpio setup functions
    - moved before mmc patches

v1: Based on u-bootx-sunxi.git#sunxi commit d854c4de2f57 "arm: Handle .gnu.hash
section in ldscripts" vs v2014.01.
sunxi: mmc support

As well as the following signed-off-by the sunxi branch shows commits to these
files authored by the following:
  Stefan Roese
  Tom Cubie
  yemao

Signed-off-by: Henrik Nordstrom <henrik@henriknordstrom.net>
Signed-off-by: Luke Leighton <lkcl@lkcl.net>
Signed-off-by: Oliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Wills Wang <wills.wang.open@gmail.com>
Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Cc: Pantelis Antoniou <panto@antoniou-consulting.com>
---
Pantelis, most of your review comments have been addressed but not all, in
particular the timeout loops aren't sorted yet, but I wanted to get the rest of
the series reposted.

v2: Based on u-boot-sunxi.git#sunxi d9aa5dd3d15c "sunxi: mmc:
checkpatch whitespace fixes" with v2014.04-rc2 merged in:
  - use proper gpio interfaces, removing awkward casts and some magic numbers.
  - remove magic numbers
  - other cleanups

v1: Based on linux-sunxi#sunxi commit d854c4de2f57 "arm: Handle .gnu.hash
section in ldscripts" vs v2014.01.
sunxi: non-FEL SPL boot support for sun7i

As well as the following signed-off-by the sunxi branch shows commits to these
files authored by the following:
  Henrik Nordstrom
  Tom Cubie

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
---
v2: Based on u-boot-sunxi.git#sunxi d9aa5dd3d15c "sunxi: mmc:
checkpatch whitespace fixes" with v2014.04-rc2 merged in:
   - mksunxiboot cleanups
   - rebase on Kbuild stuff

v1: Based on u-boot-sunxi.git#sunxi commit d854c4de2f57 "arm: Handle .gnu.hash
section in ldscripts" vs v2014.01.
sunxi: Implement reset_cpu

There is no way to reset the cpu, so use the watchdog for this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
sunxi: Add sun4i support

Based linux-sunxi#sunxi commit d854c4de2f57 "arm: Handle .gnu.hash section in
ldscripts" vs v2014.01.

As well as the following signed-off-by the sunxi branch shows commits to
the new sun4i dram bits by:

Berg Xing <bergxing@allwinnertech.com>
Tom Cubie <tangliang@allwinnertech.com>

Signed-off-by: Henrik Nordstrom <henrik@henriknordstrom.net>
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Oliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
sunxi: Add sun5i support

Based linux-sunxi#sunxi commit d854c4de2f57 "arm: Handle .gnu.hash section in
ldscripts" vs v2014.01.

As well as the following signed-off-by the sun5i dram bits have been worked
on by:

Berg Xing <bergxing@allwinnertech.com>
Tom Cubie <tangliang@allwinnertech.com>

Signed-off-by: Henrik Nordstrom <henrik@henriknordstrom.net>
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Oliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
sunxi: Add i2c support

Based linux-sunxi#sunxi commit d854c4de2f57 "arm: Handle .gnu.hash section in
ldscripts" vs v2014.01.

As well as the following signed-off-by the sunxi branch shows commits to
the sunxi_i2c.c file by:

Stefan Roese <sr@denx.de>

Signed-off-by: Henrik Nordstrom <henrik@henriknordstrom.net>
Signed-off-by: Oliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
sunxi: Add axp209 pmic support

Based linux-sunxi#sunxi commit d854c4de2f57 "arm: Handle .gnu.hash section in
ldscripts" vs v2014.01.

As well as the following signed-off-by the sunxi branch shows commits to
the axp209.c file by:

Stefan Roese <sr@denx.de>

Signed-off-by: Henrik Nordstrom <henrik@henriknordstrom.net>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
sunxi: Add axp152 pmic support

Based linux-sunxi#sunxi commit d854c4de2f57 "arm: Handle .gnu.hash section in
ldscripts" vs v2014.01.

As well as the following signed-off-by the sunxi branch shows commits to
the axp152.c file by:

Stefan Roese <sr@denx.de>
Simon "theRat"

Signed-off-by: Henrik Nordstrom <henrik@henriknordstrom.net>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
sunxi: fast MBUS support on sun7i

For qualifying hardware, we can run MBUS at 400MHz without risking
stability if we raise the DCDC3 voltage to 1.3V .

This is desirable since on A20 the MBUS is a significant bottle-neck
for some workloads.

This has been tested on 50 pieces of Cubieboard2 by Cubietech and no
issues of any kind were reported.

Signed-off-by: Emilio López <emilio@elopez.com.ar>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
net: Rename and cleanup sunxi (Allwinner) emac driver

There have been 3 versions of the sunxi_emac support patch during its
development. Somehow version 2 ended up in upstream u-boot where as
the u-boot-sunxi git repo got version 3.

This bumps the version in upstream u-boot to version 3 of the patch:
- Initialize MII clock earlier so mii access to allow independent use
- Name change from WEMAC to EMAC to match mainline kernel & chip manual
- Cosmetic code cleanup

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Henrik Nordstrom <henrik@henriknordstrom.net>
Signed-off-by: Oliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
sunxi: enable emac for sun4i and sun5i

Signed-off-by: Hans de Goede <hdegoede@redhat.com>