Add target to build it automatically upon "make" / MAKEALL. This can/should
be set by board / cpu specific headers if a special U-Boot image is
required for this SoC / board.

E.g. used by Marvell Armada XP to automatically build the u-boot.kwb
target.
Signed-off-by: NStefan Roese <sr@denx.de>
Cc: Masahiro Yamada <yamada.m@jp.panasonic.com>

This basic support for the Marvell Armada XP is base on the existing kirkwood
support. Which has been generatized by moving some common files into
common marvell locations.

This is in preparation for the upcoming Armada XP MV78460 support.
Signed-off-by: NStefan Roese <sr@denx.de>
Tested-by: NLuka Perkov <luka@openwrt.org>

By moving some kirkwood files into a Marvell common directory, those files
can be used by other Marvell platforms as well. The name mvebu is taken
from the Linux kernel source tree. It has been chosen there to represent
the SoC's from the Marvell EBU (Engineering Business Unit). Those SoC's
currently are:

Armada 370/375/XP, Dove, mv78xx0, Kirkwood, Orion5x

This will be used by the upcoming Armada XP (MV78460) platform support.
Signed-off-by: NStefan Roese <sr@denx.de>
Tested-by: NLuka Perkov <luka@openwrt.org>
Acked-by: NPrafulla Wadaskar <prafulla@marvell.com>

Signed-off-by: NTom Rini <trini@ti.com>

With the introduction of CONFIG_LOCALVERSION support we cannot build
tools without having a config file (as we won't know our PLAIN_VERSION
until then).
Reported-by: NOtavio Salvador <otavio@ossystems.com.br>
Signed-off-by: NTom Rini <trini@ti.com>

Signed-off-by: NTom Rini <trini@ti.com>

[1] Move driver/core/, driver/input/ and drivers/input/ entries
    from the top Makefile to drivers/Makefile

[2] Remove the conditional by CONFIG_DM in drivers/core/Makefile
    because the whole drivers/core directory is already selected
    by CONFIG_DM in the upper level

[3] Likewise for CONFIG_DM_DEMO in drivers/demo/Makefile

[4] Simplify common/Makefile - both CONFIG_DDR_SPD and
    CONFIG_SPD_EEPROM are boolean macros so they can directly
    select objects
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: NMarek Vasut <marex@denx.de>

Since 3ff291f3
(kconfig: convert Kconfig helper script into a shell script),
"make config" is not working because of a missing '$' before '(Q)'.

Besides, "make config" should be invoked via scripts/multiconfig.sh
to avoid a warning message:
Kconfig:11:warning: environment variable KCONFIG_OBJDIR undefined
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: NSimon Glass <sjg@chromium.org>

U-Boot has imported various source files from other projects,
mostly Linux.

Something like

  #ifdef __UBOOT__
    [ modification for U-Boot ]
  #else
    [ original code ]
  #endif

is an often used strategy for clarification of adjusted parts,
that is, easier re-sync in future.

Instead of defining __UBOOT__ in each source file,
passing it from the top Makefile would be easier.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: NMarek Vasut <marex@denx.de>
Acked-by: NHeiko Schocher <hs@denx.de>

Since the host compiler might not be gcc but e.g. clang
default to cc/c++ to invoke it.

cc: Masahiro Yamada <yamada.m@jp.panasonic.com>
cc: Tom Rini <trini@ti.com>
Signed-off-by: NJeroen Hofstee <jeroen@myspectrum.nl>

Signed-off-by: NTom Rini <trini@ti.com>

Copy the Kconfig option from "init/Kconfig" of Linux v3.16 tag
and adjust the help document.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>

Commit 51148790 added scripts/multiconfig.py written in Python 2
to adjust Kconfig for U-Boot.

It has been hard for Python 3 users because Python 2 and Python 3
are not compatible with each other.

We are not happy about adding a new host tool dependency
(in this case, Python version dependency) for the core build process.
After some discussion, we decided to use only basic tools.

The script may get a bit more unreadable by shell scripting,
but we believe it is worthwhile.

In addition, this commit revives "<board>_config" target that is
equivalent to "<board>_defconfig" for backwards compatibility.
It is annoying to adjust various projects which use U-Boot.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>
Suggested-by: NIgor Grinberg <grinberg@compulab.co.il>
Tested-by: NIgor Grinberg <grinberg@compulab.co.il>
Acked-by: NSimon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@ti.com>
Cc: Jeroen Hofstee <jeroen@myspectrum.nl>
Cc: Stephen Warren <swarren@nvidia.com>

Signed-off-by: NRoger Meier <roger@bufferoverflow.ch>
Reviewed-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>
Tested-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Tom Rini <trini@ti.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Simon Glass <sjg@chromium.org>

The command generating the "common/system_map.o" file was always shown
during the build making the output messy. Now it is called using the
Kbuild "cmd" macro, so that the full command is shown only when
building in verbose mode.
Signed-off-by: NVasili Galka <vvv444@gmail.com>

"make %_config all" was supported for the first time in U-Boot:
  commit 53bca5ab
  kbuild: support simultaneous board configuration and "make all"

Surprisingly it had not been working in Linux Kernel for a long time.

So I sent back the patch to the Linux Kbuild community and it was
accepted with a little code improvement, at commit 9319f453.

Now, you can do "make defconfig all" or "make %_defconfig all"
in Linux too.

This commit updates some scripts to fill the code-diff
between Linux and U-Boot.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>

This commit was imported from Linux Kernel:
commit a86fe353 written by me.

W=... provides extra gcc checks.

Having such code in scripts/Makefile.build results in the same flags
being added to KBUILD_CFLAGS multiple times becuase
scripts/Makefile.build is invoked every time Kbuild descends into
the subdirectories.

Since the top Makefile is already too cluttered, this commit moves
all of extra gcc check stuff to a new file scripts/Makefile.extrawarn,
which is included from the top Makefile.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>

u-boot.map is generated automatically by the compiler and more
importantly can handle addresses >4GB.

file_size was being calculated using back-ticks but map_size uses
$(shell ...). Update the file_size calculation to use $(shell ...).

From: Jeroen Hofstee <jeroen@myspectrum.nl>

The binary_size_check target relies on stat -c %s
to return the size of u-boot.bin. This only works
with GNU stat though. Use wc instead.
Signed-off-by: NChris Packham <judge.packham@gmail.com>
Acked-by: NSimon Glass <sjg@chromium.org>

Signed-off-by: NTom Rini <trini@ti.com>

This commit enables Kconfig.
Going forward, we use Kconfig for the board configuration.
mkconfig will never be used. Nor will include/config.mk be generated.

Kconfig must be adjusted for U-Boot because our situation is
a little more complicated than Linux Kernel.
We have to generate multiple boot images (Normal, SPL, TPL)
from one source tree.
Each image needs its own configuration input.

Usage:

Run "make <board>_defconfig" to do the board configuration.

It will create the .config file and additionally spl/.config, tpl/.config
if SPL, TPL is enabled, respectively.

You can use "make config", "make menuconfig" etc. to create
a new .config or modify the existing one.

Use "make spl/config", "make spl/menuconfig" etc. for spl/.config
and do likewise for tpl/.config file.

The generic syntax of configuration targets for SPL, TPL is:

  <target_image>/<config_command>

Here, <target_image> is either 'spl' or 'tpl'
      <config_command> is 'config', 'menuconfig', 'xconfig', etc.

When the configuration is done, run "make".
(Or "make <board>_defconfig all" will do the configuration and build
in one time.)

For futher information of how Kconfig works in U-Boot,
please read the comment block of scripts/multiconfig.py.

By the way, there is another item worth remarking here:
coexistence of Kconfig and board herder files.

Prior to Kconfig, we used C headers to define a set of configs.

We expect a very long term to migrate from C headers to Kconfig.
Two different infractructure must coexist in the interim.

In our former configuration scheme, include/autoconf.mk was generated
for use in makefiles.
It is still generated under include/, spl/include/, tpl/include/ directory
for the Normal, SPL, TPL image, respectively.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: NSimon Glass <sjg@chromium.org>

Add support for NAND gpheader image. TI Keystone2 ROM bootloader
expects 8 bytes of trailing zeroes in the nand u-boot image.
So add zeros at the end of the nand gph image.
Acked-by: NMurali Karicheri <m-karicheri2@ti.com>
Signed-off-by: NIvan Khoronzhuk <ivan.khoronzhuk@ti.com>

Replace the TAGS target name by the actual ctags target name.
Also, add etags target documentation.

Cc: Masahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: NIgor Grinberg <grinberg@compulab.co.il>

Commit efcf8619 (kbuild: use scripts/Makefile.clean)
refactored the cleaning targets and accidentially replaced the actually
generated "ctags" and "etags" files in the file list by "tags" and "TAGS".
"tags" and "TAGS" are not part of the Makefile build targets and
therefore should not be a part of the list for clean targets.

Substitute the actually generated files instead, to fix the clean
targets behavior.

Cc: Masahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: NIgor Grinberg <grinberg@compulab.co.il>

Commit 9e414032 (kbuild: change out-of-tree build)
changed the U-Boot build working directory to the output tree
for the out-of-tree builds.
This broke the {c,e}tags/cscope build targets as TAG_SUBDIRS variable
collected directories based on assumption that the build working
directory is the U-Boot source tree directory.

Fix the {c,e}tags/cscope build targets by adding the $(srctree) prefix.
Also, remove the $(obj) prefix from the etags build target to finish
the $(obj) prefix removal started by the same commit.

Cc: Masahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: NIgor Grinberg <grinberg@compulab.co.il>

Signed-off-by: NTom Rini <trini@ti.com>

Commit 7d89982b stopped creating symbolic link
arch/${arch}/include/asm/proc.

We do not need to delete it by "make mrproper" any more.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Vasili Galka <vvv444@gmail.com>

We need to subtract two hex numbers. Avoid using strtonum() by doing the
subtraction in bc with a suitable input base.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reported-by: NVasili Galka <vvv444@gmail.com>

Signed-off-by: NTom Rini <trini@ti.com>

Import the following trivial commits from Linux v3.16-rc1:

 bb66fc6 kbuild: trivial - use tabs for code indent where possible
 7eb6e34 kbuild: trivial - remove trailing empty lines
 3fbb43d kbuild: trivial - fix comment block indent
 38385f8 kbuild: trivial - remove trailing spaces
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>

This seems like a better name. This is a patch-up to the earlier commit
63b4b5ba, and also removes a redundant Makefile change.
Signed-off-by: NSimon Glass <sjg@chromium.org>

All files under spl/ and tpl/ are generated during the build process
except spl/Makefile.

We can simplify clean-rule and git-ignore by moving spl/Makefile
to somewhere else.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>

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

In some cases, an externally-built device tree binary is required to be
attached to U-Boot. An example is when using image signing, since in that
case the .dtb file must include the public keys.

Add a DEV_TREE_BIN option to the Makefile, and update the documentation.

Usage is something like:

	make DEV_TREE_BIN=boot/am335x-boneblack-pubkey.dtb
Signed-off-by: NSimon Glass <sjg@chromium.org>

Check that the image size matches the size we get from u-boot.bin. If it
doesn't, that generally means that some extra sections are being added to
u-boot.bin, meaning that it is not possible to access data appended to
the U-Boot binary. This is used for device tree, so needs to work.

This problem was introduced by commit b02bfc4d. By adding a test we can
prevent a reccurence.
Signed-off-by: NSimon Glass <sjg@chromium.org>

Building u-boot tools with clang as a host compiler e.g. on
FreeBSD with `gmake HOSTCC=clang CONFIG_USE_PRIVATE_LIBGCC=y tools`
leads to many warnings [1] for every compiler invocation since
commit 598e2d33. Part of mentioned commit imports linux patches:

 - kbuild: LLVMLinux: Adapt warnings for compilation with clang
 - kbuild: LLVMLinux: Add Kbuild support for building kernel with Clang

No version of clang supports the gcc fno-delete-null-pointer-checks
though, but it is only passed to clang. Gcc does not have the clang
specific Qunused-arguments for the target. Furthermore several
warnings are disabled which aren't encountered in u-boot. Since such
a build has worked for quite some time and works after removing these
changes, just remove the clang specific handling to restore normal
building with clang as hostcc.

[1] Actual warnings
-------------------
  GEN     include/autoconf.mk.dep
arm-freebsd-gcc: unrecognized option '-Qunused-arguments'

  HOSTCC  scripts/basic/fixdep
clang: warning: argument unused during compilation:
                '-fno-delete-null-pointer-checks'

cc: Masahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: NJeroen Hofstee <jeroen@myspectrum.nl>

Signed-off-by: NTom Rini <trini@ti.com>

Remove the common infrastructure of nand_spl and
clean-up the code inside ifdef(CONFIG_NAND_U_BOOT)..endif.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>

"checkstack" target uses $(PERL) so PERL must be defined.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>

RANLIB was added by commit e2211743 (more than a decade ago)
but it has been never referenced at all.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>