Introduce board/renesas/common/Makefile and remove the multiple
duplicate copies of obj := ../common/*.o from board Makefiles.
Let the build system include the common Makefile using the
HAVE_VENDOR_COMMON_LIB and build the common objects that are
shared by all the boards that way. No functional change intended.

Some of the remaining board files which include board specific
settings have been updated to use obj-y += to avoid rewriting
the board obj-y target and avoid dropping object files from the
build.

The board/renesas/common/Makefile is now also used when building
RZG2L targets which also set CONFIG_RCAR_64 symbol and 32bit R-Car
Gen2 targets, however, this common code is specific to 64bit R-Car
only. Inhibit the build of this common code for RZG2L using extra
ifndef CONFIG_RZG2L and do not include any code for R-Car Gen2 so
far.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>

Rename directory board/renesas/rcar-common to board/renesas/common and
move files. This allows the build system to use HAVE_VENDOR_COMMON_LIB
which automatically includes board/$(VENDOR)/common/Makefile . Create
temporarily empty board/renesas/common/Makefile to be extended with
actual content later in this series. This is a preparatory patch for
board Makefile simplification. No functional change so far.

Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>

Split common board code for R-Car Gen3 and Gen4 into separate files.
The R-Car Gen3 board code contains fixups specific to TFA which are
no longer required on R-Car Gen4, keep those fixups in its own file
so they would not interfere with Gen4.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>

Use the new symbol to refer to any 'SPL' build, including TPL and VPL

Signed-off-by: Simon Glass <sjg@chromium.org>

Rename arch-rmobile to arch-renesas and mach-rmobile to mach-renesas
because all the chips are made by Renesas, while only a subset of
them is from the R-Mobile line.

Use the following command to perform the rename, with manual move of
the directories using git mv and manual fix up to arch/arm/Makefile:

"
$ git grep -l '\<\(arch\|mach\)-rmobile\>' | \
  xargs -I {} sed -i 's@\<\(arch\|mach\)-rmobile\>@\1-renesas@g' {}
$ sed -i 's@rmobile@renesas@' board/*/*/Kconfig
"

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Paul Barker <paul.barker.ct@bp.renesas.com>

Update MAINTAINERS file. Add missing MAINTAINERS file for Spider,
Whitehawk and V3HSK boards. Update mail addresses. Add file globs
to match on DT and driver files related to these boards.

The GRPEACH and R2DPLUS are special in that they are not R-Car
and have their own set of specialized drivers.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>

Introduce weak default board_init() in rcar-common/common.c , which
allows complete removal of ebisu.c and condor.c at the same time .

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>

There is no need to pull in all those headers as the board file is
basically empty. Drop them all.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>

The reset_cpu() implementation is basically the same across Gen3
SoCs and identical across Gen4 SoCs. Introduce weak default for
reset_cpu(), so that it does not have to be duplicated in every
board file again.

There is a slight difference for CA53 only systems, like E3 and D3,
which now check MIDR for CPU ID first just like the other systems,
but this is OK since the MIDR always returns CA53 core type and the
correct reset register is written.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>

The bootparams do not have to be at fixed location, they can be
dynamically mallocated instead. Make it so to get rid of another
fixed assignment.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Biju Das <biju.das.jz@bp.renesas.com>
Cc: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>