Add driver model functionality for generic board.

This includes data structures and base code for registering devices and
uclasses (groups of devices with the same purpose, e.g. all I2C ports will
be in the same uclass).

The feature is enabled with CONFIG_DM.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Signed-off-by: NMarek Vasut <marex@denx.de>
Signed-off-by: NPavel Herrmann <morpheus.ibis@gmail.com>
Signed-off-by: NViktor Křivák <viktor.krivak@gmail.com>
Signed-off-by: NTomas Hlavacek <tmshlvck@gmail.com>

This adds a README to help with understanding of this series.
Signed-off-by: NSimon Glass <sjg@chromium.org>

U-Boot already has a list implementation, and files which include both
that and the yaffs implementation will get errors:

In file included from ydirectenv.h:80:0,
                 from yportenv.h:81,
                 from yaffs_guts.h:19,
                 from yaffs_allocator.h:19,
                 from yaffs_allocator.c:14:
yaffs_list.h:32:8: error: redefinition of ‘struct list_head’
 struct list_head {
        ^

Remove the yaffs implementation.
Signed-off-by: NSimon Glass <sjg@chromium.org>

U-Boot now uses errors defined in include/errno.h which are negative
integers. Commands which fail need to report the error and return 1
to indicate failure. Add this functionality in cmd_process_error().

For now this merely reports the error number. It would be possible
also to produce a helpful error message by storing the error strings
in U-Boot.
Signed-off-by: NSimon Glass <sjg@chromium.org>

Add support for building a device tree for sandbox's CONFIG_OF_HOSTFILE
option to make it easier to use device tree with sandbox.

This adjusts the Makefile to build a u-boot.dtb file which can be passed
to sandbox U-Boot with:

   ./u-boot -d u-boot.dtb
Signed-off-by: NSimon Glass <sjg@chromium.org>

Copied from Linux sources "include/linux/sizes.h" commit
413541dd66d51f791a0b169d9b9014e4f56be13c
Signed-off-by: NAlexey Brodkin <abrodkin@synopsys.com>

Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Tom Rini <trini@ti.com>
Cc: Stefan Roese <sr@denx.de>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Acked-by: NTom Rini <trini@ti.com>
Acked-by: NStefan Roese <sr@denx.de>
[trini: Add bcm Kona platforms to the patch]
Signed-off-by: NTom Rini <trini@ti.com>

Now we have two different frameworks for doing the same thing.
I'd like to propose to drop nand_spl framework.
How about deleting it before v2014.07 release?

In the interim, this commit will display a warning message
when compiling nand_spl board.

Now we have 19 nand_spl boards:

  MPC8315ERDB_NAND
  SIMPC8313_LP
  SIMPC8313_SP
  MPC8536DS_NAND
  MPC8569MDS_NAND
  MPC8572DS_NAND
  P1023RDS_NAND
  P1011RDB_NAND
  P1020RDB_NAND
  P2010RDB_NAND
  P2020RDB_NAND
  acadia_nand
  bamboo_nand
  canyonlands_nand
  glacier_nand
  haleakala_nand
  kilauea_nand
  rainier_nand
  sequoia_nand

They must be ported to SPL before the deadline,
otherwise they will be removed.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Dave Liu <daveliu@freescale.com>
Cc: Ron Madrid <info@sheldoninst.com>
Cc: Roy Zang <tie-fei.zang@freescale.com>
Cc: Stefan Roese <sr@denx.de>
Acked-by: NStefan Roese <sr@denx.de>

All arch/m68k/cpu/*/config.mk define the same flags
  PLAGFORM_REFLFLAGS += -ffixed-d7 -msep-data
Move it to arch/m68k/config.mk
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Jason Jin <Jason.jin@freescale.com>

-ffixed-r13 is defined commonly for sh2, sh3, sh4.
Move it to arch/sh/config.mk
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>

-ffreestanding is defined at the top Makefile for all architectures.
Do not define it twice for SH2A.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>

-Wstrict-prototypes, -ffreestanding, -fno-stack-protector
are defined at the top Makefile for all architectures.

Do not define them twice for x86.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Simon Glass <sjg@chromium.org>
Acked-by: NSimon Glass <sjg@chromium.org>

board/sheldon/simpc8313/config.mk is used only for nand_spl.
So it should go into nand_spl/board/sheldon/simpc8313/.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>

LDSCRIPT_MAKEFILE_DIR is not referenced from anywhere. Remove.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>

This variable was abolished by Kbuild series.
I forgot to delete it.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>

$(call if_changed,...) must take FORCE as a prerequite.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: NSimon Glass <sjg@chromium.org>

Add console selection from DTB which is enough to have
OF driven solution.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Read ram size directly from DTB.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Enable initialize sdhci from DTB.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Gem can be directly initialized from DTB.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Disable CONFIG_OF_CONTROL for SPL compilation.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

- Add xilinx_emaclite_of_init to netdev.h
- Remove global data pointer from the driver
- Add better handling for error state.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Conflicts:
	arch/arm/cpu/armv7/config.mk
	board/ti/am43xx/mux.c
	include/configs/am43xx_evm.h
Signed-off-by: NTom Rini <trini@ti.com>

When we tell the compiler to optimize for ARMv7 (and ARMv6 for that
matter) it assumes a default of SCTRL.A being cleared and unaligned
accesses being allowed and fast at the hardware level.  We set this bit
and must pass along -mno-unaligned-access so that the compiler will
still breakdown accesses and not trigger a data abort.

To better help understand the requirements of the project with respect
to unaligned memory access, the
Documentation/unaligned-memory-access.txt file has been added as
doc/README.unaligned-memory-access.txt and is taken from the v3.14-rc1
tag of the kernel.

Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Cc: Mans Rullgard <mans@mansr.com>
Signed-off-by: NTom Rini <trini@ti.com>

While there are valid reasons to use __packed, often the answer is that
you should be doing something else here instead.
Signed-off-by: NTom Rini <trini@ti.com>

Remove the last uses of symbol offsets in ARM U-Boot.
Remove some needless uses of _TEXT_BASE.
Remove all _TEXT_BASE definitions.
Signed-off-by: NAlbert ARIBAUD <albert.u.boot@aribaud.net>

This prevents references to _end from generating absolute
relocation records.

This change is binary invariant for ARM targets.
Signed-off-by: NAlbert ARIBAUD <albert.u.boot@aribaud.net>

Newly added cm_t335 was missed in commit 47ed5dd0 which
made ARM targets produce full ELF files. Fix its linker
script.

This change is binary-invariant when only .dynsym, .dynstr,
.dynamic, .plt, .interp and .gun sections are declared.

Sections .hash, .got.plt, .dynbss and .ARM.exidx are also
declared so that their (unused) content is moved out of the
u-boot binary.
Signed-off-by: NAlbert ARIBAUD <albert.u.boot@aribaud.net>

This reverts commit fc0fc50f.

The author has asked on the mailing list that we revert this for now as
it breaks write support.
Reported-by: NŁukasz Majewski <l.majewski@samsung.com>
Signed-off-by: NTom Rini <trini@ti.com>

With this, fixup a trivial build error of get_effective_memsize needing
to be updated in the new board/freescale/p1010rdb/spl.c
Signed-off-by: NTom Rini <trini@ti.com>

arch/arm/cpu/armv7/omap-common/config.mk is never included
because "omap-common" is not SoC name.

If we want to add OMAP-specific compiler flags,
they must be added to omap3/config.mk, omap4/config.mk, omap5/config.mk.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Tom Rini <trini@ti.com>

Same as the previous commit.
Move sanity check to prepare1 target to avoid nasty troubles.

Before this commit, LDSCRIPT existence was not checked
when it was specified by CONFIG_SYS_LDSCRIPT.
Now LDSCRIPT existence is checked for all boards.

$(wildcard $(LDSCRIPT)) must point to the linker scripts
with absolute path.
Otherwise, make will terminate with a false error
on out-of-tree build.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>

Before this commit, make terminated with an error
where is shouldn't under some condition.

This bug happened when we built a board unsupporting
generic board right after building with generic board.

For example, the following sequence failed.
(harmony uses generic board but microblaze-generic does not
support it)

  $ make harmony_config
  Configuring for harmony board...
  $ make CROSS_COMPILE=arm-linux-gnueabi-
    [ Build succeed ]
  $ make microblaze-generic_config
  Configuring for microblaze-generic board...
  $ make CROSS_COMPILE=microblaze-linux-
  Makefile:488: *** Your architecture does not support generic board.
  Please undefined CONFIG_SYS_GENERIC_BOARD in your board config file.  Stop.

We had to do "make clean" before building the microblaze board.

This commit fixes this unconvenience.

Move generic board sanity check to "prepare1" target,
which is run after generation of include/autoconf.mk.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>

Commit 6ab6b2af deleted ./u-boot.dtb because it was a copy
of dts/dt.dtb.

But Simon suggested to keep u-boot.dtb at the top directory
because it is a build output.

After discussions, we agreed on revival of ./u-boot.dtb.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@ti.com>
Acked-by: NSimon Glass <sjg@chromium.org>

"help" target has been copied from Linux 3.13 and adjusted
for U-Boot.
Unlike Linux, cleaning is done on 4 levels:
clean, clobber, mrproper, distclean.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>

Import build rules of single targets from Linux 3.13.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>

This commit avoids generating ./SPL twice.
  - Fist time descending to spl/
  - Second time as a prerequisite of u-boot-with-spl.imx,
    u-boot-with-nand-spl.imx.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>

Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>

Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>

Move sandbox-specific link rule to arch/sandbox/config.mk.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>

Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>