Commit graph

126 commits

Author SHA1 Message Date
Marek Vasut
792557d111 spl: socfpga: Generate Arria10 SFP header V1
Generate SoCFPGA boot header version 1 instead of version 0 for Arria10.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Chin Liang See <chin.liang.see@intel.com>
2018-05-08 21:08:42 +02:00
Tom Rini
83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00
Rasmus Villemoes
0658761733 Makefile: always preserve output for images that can contain HAB Blocks
The current makefile logic disables creation of the
SPL.log/u-boot-ivt.img.log etc. files when V=1 is given on the command
line, the rationale presumably being that the user wants and gets the
information on the console.

However, from general principles, I don't think a higher V= level
should affect which build artifacts get generated (and certainly
shouldn't produce fewer). Concretely, it's also a problem that when
doing a V=1 build in a terminal, the relevant HAB blocks lines easily
drown in all the other V=1 output.

Moreover, build systems such as Yocto by default pass V=1, so in that
case the information gets hidden away in the do_compile log file, making
it nigh impossible to create a recipe for creating signed U-boot images
- I don't want to disable V=1, because having verbose output in the log
file is valuable when things go wrong, but OTOH trying to go digging in
the do_compile log file (and getting exactly the right lines) is not
pleasant to even think about.

So change the logic so that for V=0, the mkimage output is redirected
to MKIMAGEOUTPUT (which is also the current behaviour), while for any
other value of V, we _additionally_ write the information to make's
stdout, whatever that might be.

Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Tested-by: Breno Lima <breno.lima@nxp.com>
2018-04-15 11:35:04 +02:00
Simon Goldschmidt
d693742b25 spl: unbreak CONFIG_SPL_MULTI_DTB_FIT after fixing CONFIG_OF_EMBED
With commit 9bd76b8076 ("spl: make CONFIG_OF_EMBED pass dts through
fdtgrep"), CONFIG_SPL_MULTI_DTB_FIT has been broken because
cmd_fdtgrep was now unknown in scripts/Makefile.spl after moving
it to dts/Makefile. This bug has been introduced with v2018.01.

This patch moves cmd_fdtgrep from dts/Makefile to scripts/Makefile.lib
and includes scripts/Makefile.lib in scripts/Makefile.spl.

Fixes: 9bd76b8076 ("spl: make CONFIG_OF_EMBED pass dts through fdtgrep")
Reported-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Simon Goldschmidt <sgoldschmidt@de.pepperl-fuchs.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
2018-02-14 12:14:16 -05:00
Goldschmidt Simon
9bd76b8076 spl: make CONFIG_OF_EMBED pass dts through fdtgrep
Building spl with CONFIG_OF_EMBED enabled results in an error message
on my board: "SPL image too big". This is because the fdtgrep build
step is only executed for CONFIG_OF_SEPARATE.

Fix this by moving the fdtgrep build step ('cmd_fdtgreo') from
scripts/Makefile.spl to dts/Makefile so that the reduced dtb is
available for all kinds of spl builds.

The resulting variable name for the embedded device tree blob changes,
too, which is why common.h and fdtdec.c have tiny changes.

Signed-off-by: Simon Goldschmidt <sgoldschmidt@de.pepperl-fuchs.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-11-29 22:36:58 -05:00
Michal Simek
c85a6b79d1 tools: mkimage: Extend mkimage to also include pmufw
The patch is adding external pmufw "Platform Management Unit firmware"
to boot.bin image. Boot.bin is a Xilinx format which bootrom is capable
to read and boot the system. pmufw is copied to the header data section
follows by u-boot-spl.bin. pmufw is consumed by PMU unit (Microblaze)
and SPL runs on a53-0.

This is generated command line when PMUFW_INIT_FILE is setup.

./tools/mkimage -T zynqmpimage -R ./"" -n
./"board/xilinx/zynqmp/pmufw.bin" -d spl/u-boot-spl.bin spl/boot.bin

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-11-28 16:08:57 +01:00
Masahiro Yamada
d6a0c78a4e pylibfdt: compile pylibfdt only when dtoc/binman is necessary
Currently, pylibfdt is always compiled if swig is installed on your
machine.  It is really annoying because most of targets (excepts
x86, sunxi, rockchip) do not use dtoc or binman.

"checkbinman" and "checkdtoc" are wrong.  It is odd that the final
build stage checks if we have built necessary tools.  If your platform
depends on dtoc/binman, you must be able to build pylibfdt.  If swig
is not installed, it should fail immediately.

I added PYLIBFDT, DTOC, BINMAN entries to Kconfig.  They should be
property select:ed by platforms that need them.  Kbuild will descend
into scripts/dtc/pylibfdt/ only when CONFIG_PYLIBFDT is enabled.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-11-17 07:43:32 -05:00
Masahiro Yamada
15b97f5c5e pylibfdt: move pylibfdt to scripts/dtc/pylibfdt and refactor makefile
The pylibfdt is used by dtoc (and, indirectly by binman), but there
is no reason why it must be generated in the tools/ directory.

Recently, U-Boot switched over to the bundled DTC, and the directory
structure under scripts/dtc/ now mirrors the upstream DTC project.
So, scripts/dtc/pylibfdt is the best location.

I also rewrote the Makefile in a cleaner Kbuild style.

The scripts from the upstream have been moved as follows:

  lib/libfdt/pylibfdt/setup.py -> scripts/dtc/pylibfdt/setup.py
  lib/libfdt/pylibfdt/libfdt.i -> scripts/dtc/pylibfdt/libfdt.i_shipped

The .i_shipped is coped to .i during building because the .i must be
located in the objtree when we build it out of tree.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-11-17 07:43:32 -05:00
Jean-Jacques Hiblot
2f57c95100 spl: dm: Make it possible for the SPL to pick its own DTB from a FIT
u-boot can be embedded within a FIT image with multiple DTBs. It then
selects at run-time  which one is best suited for the platform.
Use the same principle here for the SPL: put the DTBs in a FIT image,
compress it (LZO, GZIP, or no compression) and append it at the end of the
SPL.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
[trini: Move default y of SPL_MULTI_DTB_FIT_DYN_ALLOC to it being the
default choice if SYS_MALLOC_F, drop spl.h include from lib/fdtdec.c
it's unused.]
Signed-off-by Tom Rini <trini@konsulko.com>
2017-10-06 11:26:41 -04:00
Simon Glass
b145b45b0c dtoc: Rename the auto-generated dt-structs.h file
The filename of the auto-generated file is the same as the file that
includes it. Even though the form is in the generated/ subdirectory, this
could be confused.

Rename the generated file to something that makes it clear it is
auto-generated.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Kever Yang <kever.yang@rock-chips.com>
2017-09-15 05:27:48 -06:00
Clément Bœsch
3809e30273 Makefile: honor PYTHON configuration properly
On some systems `python` is `python3` (for instance, Archlinux). The
`PYTHON` variable can be used to point to `python2` to have a successful
build.

The use of `PYTHON` is currently limited in the Makefile and needs to be
extended in other places:

First, pylibfdt is required to be a Python 2 binding (binman imports
pylibfdt and is only compatible Python 2), so its setup.py needs to be
called accordingly. An alternative would be to change the libfdt
setup.py shebang to python2, but the binding is actually portable. Also,
it would break on system where there is no such thing as `python2`.

Secondly, the libfdt import checks need to be done against Python 2 as
well since the Python 2 compiled modules (in this case _libdft.so) can
not be imported from Python 3.

Note on the libfdt imports: "@if ! PYTHONPATH=tools $(PYTHON) -c 'import
libfdt'; then..." is probably simpler than the currently sub-optimal
pipe.
Reviewed-by: Jonathan Gray <jsg@jsg.id.au>
2017-08-20 09:53:13 -04:00
Simon Glass
0649cd0d49 Move environment files from common/ to env/
About a quarter of the files in common/ relate to the environment. It
seems better to put these into their own subdirectory and remove the
prefix.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2017-08-15 08:18:45 -04:00
Philipp Tomsich
dd6fbcb938 spl: Kconfig: migrate $(SPL_TPL_)LDSCRIPT to Kconfig
Now that we have split up SPL_LDSCRIPT into a SPL and TPL variant and
have started to use the TPL-variant for the RK3368, it's time to clean
up behind ourselves: move both variants into Kconfig and remove them
from the whitelist.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-08-13 17:12:34 +02:00
Philipp Tomsich
1749858a64 spl: allow a separate TEXT_BASE, LDSCRIPT and MAX_SIZE for TPL
For the bringup of the RK3368, we need to support TPL and SPL running
from different addresses... which requires both stages to use a
distinct TEXT_BASE.

This commit adds support for having a separate LDSCRIPT for TPL (which
is expected to make use of the TPL_MAX_SIZE define) and for having a
the option of defining TPL_TEXT_BASE and having the TPL stage linked
against this address.

Note that the handling of the TEXT_BASE is designed to not interfere
with the previous assumption that SPL_TEXT_BASE should be used for TPL
as well, unless TPL_TEXT_BASE is defined.  For this reason, the test
in Makefile.spl uses the following (seemingly redundant checks):
 1. looks for $(SPL_TPL_)TEXT_BASE
 2. looks for SPL_TEXT_BASE (even when building in TPL)

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-08-13 17:12:21 +02:00
Philipp Tomsich
f291ce1298 spl: dm: Kconfig: split OF_CONTROL and OF_PLATDATA between SPL and TPL
For the RK3368, we want to use OF_PLATDATA in TPL, but full OF_CONTROL
in SPL: this requires the introduction of a new family of
configuration options to decouple SPL_OF_CONTROL and SPL_OF_PLATDATA
from TPL.

Consequently, Makefile.spl needs to be adjusted to test for these
configuration items through the $(SPL_TPL_) macro instead of
hard-coding the SPL variant.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2017-08-13 17:12:20 +02:00
Simon Glass
e38ffc4267 fdt: Makefile: Build python libfdt library if needed
This is needed by binman and dtoc, so if those are being used, check that
the library is present and complain if not. Make sure that any error
appears on stderr so that buildman notices it.

This means that the fallback library (which uses fdtget) will not be used
anymore and swig will need to be installed to use binman / dtoc.

This affects any board which uses binman (currently sunxi and x86) or dtoc
(anything that uses CONFIG_SPL_OF_PLATDATA, currently some rockchip
boards).

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-02 10:17:50 -06:00
Siarhei Siamashka
7f0ef5a945 sunxi: Store the device tree name in the SPL header
This patch updates the mksunxiboot tool to optionally add
the default device tree name string to the SPL header. This
information can be used by the firmware upgrade tools to
protect users from harming themselves by trying to upgrade
to an incompatible bootloader.

The primary use case here is a non-removable bootable media
(such as NAND, eMMC or SPI flash), which already may have
a properly working, but a little bit outdated bootloader
installed. For example, the user may download or build a
new U-Boot image for "Cubieboard", and then attemept to
install it on a "Cubieboard2" hardware by mistake as a
replacement for the already existing bootloader. If this
happens, the flash programming tool can identify this
problem and warn the user.

The size of the SPL header is also increased from 64 bytes
to 96 bytes to provide enough space for the device tree name
string.
[Andre: split patch to remove OF_LIST hash feature]

Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2017-05-17 23:23:58 +05:30
Philipp Tomsich
e938ef1f07 spl: Makefile: include /config in the (reduced) FDT used by the SPL stage
When OF control is enabled for the SPL stage, nodes are removed from
the DTB to reduce its size. While /chosen is kept, /config is removed.

There's no reason why /chosen should be kept over /config (and as we
would like to put properties into /config that control the SPL stage),
we add '/config' to the list of nodes to be retained for the SPL stage.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Acked-by: Simon Glass <sjg@chromium.org>
2017-05-11 22:03:40 -04:00
Joel Stanley
e391b1e64b Makefile: Fix linking with modern binutils
Since Binutils 1a9ccd70f9a7[1] u-boot will not link targets that set
CONFIG_SYS_TEXT_BASE=0 with the following error:

  LD      u-boot
arm-linux-gnueabi-ld.bfd: u-boot: Not enough room for program headers, try
 linking with -N
arm-linux-gnueabi-ld.bfd: final link failed: Bad value

The issue can be reproduced with the bad binutils and the rock2_defconfig
target.

This issue was also encountered by the powerpc kernel[2], with the fix
being to pass --no-dynamic-linker for linkers newer than 2.26 when this
flag was introduced. The option tells ld that the PIE or shared lib does
not need loaded program headers.

Ubuntu Zesty's Binutils 2.27.51.20161202 hits this error.

[1] https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=1a9ccd70f9a7
[2] https://git.kernel.org/cgit/linux/kernel/git/powerpc/linux.git/commit/?h=next&id=ff45000fcb56b5b0f1a14a865d3541746d838a0a

Signed-off-by: Joel Stanley <joel@jms.id.au>
[AF: Apply to LDFLAGS_$(SPL_BIN) as well, suggested by Tom Rini]
Signed-off-by: Andreas Färber <afaerber@suse.de>
2017-04-10 08:06:48 -04:00
Maxime Ripard
d2fdcc76e8 scripts: sunxi: Build an raw SPL image
Introduce a new sunxi-spl-with-ecc.bin image with already the right header,
ECC, randomizer and padding for the BROM to be able to read it.

It needs to be flashed using a raw access to the NAND so that the
controller doesn't change a thing to it, since we already have all the
right parameters.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
2017-04-07 11:23:46 +05:30
Simon Glass
001f3142c3 Makefile: Provide an option to select SPL or TPL
At present we have SPL_ which can be used in Makefiles to select between
normal and SPL CONFIGs like this:

    obj-$(CONFIG_$(SPL_)DM)		+= core/

When TPL is being built, SPL_ has the value 'SPL' which is generally a
good idea since they tend to follow each other. But in extreme situations
we may want to distinugish between SPL and TPL. For example we may not
want to enable CONFIG_DM with TPL.

Add a new SPL_TPL_ variable which is set to either empty (for U-Boot
proper), 'SPL' or 'TPL'. This may prove useful with TPL-specific options.

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-04-05 16:36:58 -04:00
Heiko Stübner
27326c7ee2 dm: allow limiting pre-reloc markings to spl or tpl
Right now the u-boot,dm-pre-reloc flag will make each marked node
always appear in both spl and tpl. But systems needing an additional
tpl might have special constraints for each, like the spl needing to
be very tiny.

So introduce two additional flags to mark nodes for only spl or tpl
environments and introduce a function dm_fdt_pre_reloc to automate
the necessary checks in code instances checking for pre-relocation
flags.

The behaviour of the original flag stays untouched and still marks
a node for both spl and tpl.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Kever Yang <kever.yang@rock-chips.com>
2017-03-16 16:03:44 -06:00
Simon Glass
84547b4e66 x86: Add SPL build rules for start-up code
When SPL is used we need to build the 16-bit start-up code. Add Makefile
rules to handle this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06 11:38:46 +08:00
Simon Glass
0ec28e0266 spl: Don't create a BSS padding when it is separate
When BSS does not immediate follow the SPL image we don't need padding
before the device tree. Remove it in this case.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06 11:38:46 +08:00
Simon Glass
d688bd728f spl: Makefile: Define SPL_ earlier
This Makefile variable can be used in the architecture's main Makefile but
at present it is not set up until later. Set it just before this Makefile is
included.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06 11:38:46 +08:00
Sven Ebenfeld
1f6a664802 Makefile: preserve output for images that can contain HAB Blocks
To being able to sign created binaries, we need to know the HAB Blocks
for that image. Especially for the imximage type the HAB Blocks are
only available during creation of the image. We want to preserve the
information until we get to sign the files.
In the verbose case we still get them printed out instead of writing
to log files.

Cc: sbabic@denx.de

v2-Changes:
 - No usage of MKIMAGEOUTPUT_$(@F) macro.
 - Predefine default value /dev/null in every involved Makefile.

Signed-off-by: Sven Ebenfeld <sven.ebenfeld@gmail.com>
Reviewed-by: George McCollister <george.mccollister@gmail.com>
Tested-by: George McCollister <george.mccollister@gmail.com>
2017-01-02 17:07:39 +01:00
Stefan Agner
e94793c844 spl: add USB Gadget config option
Introduce USB Gadget config option. This allows to combine Makefile
entries for SPL_USBETH_SUPPORT and SPL_DFU_SUPPORT.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>
Tested-by: Ravi Babu <ravibabu@ti.com>
2016-11-28 19:49:49 -05:00
Stefan Agner
5991703e88 spl: dfu: move DFU Kconfig to SPL Kconfig
The DFU Kconfig menu entries should be part of the SPL
Kconfig file. Also avoid using the top level Makefile by
moving the config dependent build artifacts to the driver/
and driver/usb/gadget/ Makfiles.

With that, DFU can be built again in SPL if
CONFIG_SPL_DFU_SUPPORT is enabled.

Fixes: 6ad6102246 ("usb:gadget: Disallow DFU in SPL for now")

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>
2016-11-28 19:49:49 -05:00
Mike Looijmans
3b6460809c tools: mkimage: Add support for initialization table for Zynq and ZynqMP
The Zynq/ZynqMP boot.bin file contains a region for register initialization
data. Filling in proper values in this table can reduce boot time
(e.g. about 50ms faster on QSPI boot) and also reduce the size of
the SPL binary.

The table is a simple text file with register+data on each line. Other
lines are simply skipped. The file can be passed to mkimage using the
"-R" parameter.

It is recommended to add reg init file to board folder.
For example:
CONFIG_BOOT_INIT_FILE="board/xilinx/zynqmp/xilinx_zynqmp_zcu102/reg.int

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2016-11-15 15:27:37 +01:00
Jagan Teki
aec9a0f19f sunxi: Rename CONFIG_SUNXI to CONFIG_ARCH_SUNXI
CONFIG_SUNXI -> CONFIG_ARCH_SUNXI
and removed CONFIG_SUNIX from config_whitelist.txt

Cc: Simon Glass <sjg@chromium.org>
Cc: Ian Campbell <ijc@hellion.org.uk>
Cc: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2016-10-30 11:38:04 +01:00
Masahiro Yamada
e19b0fb485 kbuild: generate u-boot.cfg as a byproduct of include/autoconf.mk
Our build system still parses ad-hoc CONFIG options in header files
and generates include/autoconf.mk so that Makefiles can reference
them.  This gimmick was introduced in the pre-Kconfig days and will
be kept until Kconfig migration is completed.

The include/autoconf.mk is generated like follows:

  [1] Preprocess include/common.h with -DDO_DEPS_ONLY and
      retrieve macros into include/autoconf.mk.tmp
  [2] Reformat include/autoconf.mk.dep into include/autoconf.mk
      with tools/scripts/define2mk.sed script
  [3] Remove include/autoconf.mk.tmp

Here, include/autoconf.mk.tmp is similar to u-boot.cfg, which is
also generated by preprocessing include/config.h with -DDO_DEPS_ONLY.
In other words, there is much overlap among include/autoconf.mk and
u-boot.cfg build rules.

So, the idea is to split the build rule of include/autoconf.mk
into two stages.  The first preprocesses headers into u-boot.cfg.
The second parses the u-boot.cfg into include/autoconf.mk.  The
build rules of u-boot.cfg in Makefile and spl/Makefile will be gone.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-10-07 14:26:34 +00:00
B, Ravi
bc5dbcb918 spl: dfu: add dfu support in SPL
Traditionally the DFU support is available only
as part 2nd stage boot loader(u-boot) and DFU
is not supported in SPL.

The SPL-DFU feature is useful for boards which
does not have MMC/SD, ethernet boot mechanism
to boot the board and only has USB inteface.

This patch add DFU support in SPL with RAM
memory device support to load and execute u-boot.
And then leverage full functionality DFU in
u-boot to flash boot inital binary images to
factory or bare-metal boards to memory devices
like SPI, eMMC, MMC/SD card using USB interface.

This SPL-DFU support can be enabled through
Menuconfig->Boot Images->Enable SPL-DFU support

Signed-off-by: Ravi Babu <ravibabu@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-09-27 23:30:17 +02:00
Stephen Warren
a6c1309782 Makefile: rm u-boot.cfg dependencies are missing
Prior to the previous patch, a freshly created .u-boot.cfg.cmd may not
correctly represent all dependencies for u-boot.cfg. The previous change
only solved this issue for fresh builds; when performing an incremental
build, the deficient .u-boot.cfg.cmd is already present, so u-boot.cfg
is not rebuilt, and hence .u-boot.cfg.cmd is not rebuilt with the correct
content.

Solve this by explicitly detecting when the dependency file .u-boot.cfg.d
has not been integrated into .u-boot.cfg.cmd, and force u-boot.cfg to be
rebuilt in this case by deleting it first. This is possible since
if_changed_dep will always delete .u-boot.cfg.d when it executes
successfully, so its presence means either that the previous build was
made by a source tree that contained a Makefile that didn't include the
previous patch, or that the build failed part way through executing
if_changed_dep for u-boot.cfg. Forcing a rebuild of u-boot.cfg is required
in the former case, and will cause no additional work in the latter case,
since the file would be rebuilt anyway for the same reason it was being
rebuilt by the previous build.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
2016-09-22 11:34:59 -04:00
Stephen Warren
fcd29a4d0e Makefile: use if_change_dep for u-boot.cfg
cmd_cpp_cfg generates a dependency output, but because it's invoked using
if_changed rather than if_changed_dep, that dependency file is ignored.
This results in Kbuild not knowing about which files u-boot.cfg depends
on, so it may not be rebuilt when required.

A practical result of this is that u-boot.cfg may continue to reference
CONFIG_ options that no longer exist in the source tree, and this can
cause the adhoc config options check to fail.

This change modifies Makefile to use if_changed_dep, which in turn causes
all dependencies to be known to the next make invocation.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
2016-09-22 11:34:59 -04:00
Simon Glass
76f1f38816 Use separate options for TPL support
At present TPL uses the same options as SPL support. In a few cases the board
config enables or disables the SPL options depending on whether
CONFIG_TPL_BUILD is defined.

With the move to Kconfig, options are determined for the whole build and
(without a hack like an #undef in a header file) cannot be controlled in this
way.

Create new TPL options for these and update users. This will allow Kconfig
conversion to proceed for these boards.

Signed-off-by: Simon Glass <sjg@chromium.org>
2016-09-16 17:03:39 -04:00
Simon Glass
d22199b166 dm: Don't attach the device tree to SPL with of-platdata
When of-platdata is used in SPL we don't use the device tree. So there is no
point in attaching it. Adjust the Makefile to skip attaching the device tree
when of-platdata is enabled.

Signed-off-by: Simon Glass <sjg@chromium.org>
2016-07-14 20:40:24 -06:00
Simon Glass
dbbe2e6401 dm: Makefile: Build of-platdata files when the feature is enabled
Update the Makefile to call dtoc to create the C header and source files,
then build these into the image.

Signed-off-by: Simon Glass <sjg@chromium.org>
2016-07-14 20:40:24 -06:00
Simon Glass
72a7e07604 Makefile: Allow the SPL final link rule to be overridden
Overriding the final link rule is possible with U-Boot proper. It us used to
create a sandbox image links with host libraries. To build a sandbox SPL
image we need the same feature for SPL.

To support this, update the SPL link rule so sandbox can override it.

Signed-off-by: Simon Glass <sjg@chromium.org>
2016-07-14 20:40:24 -06:00
Michal Simek
1a6a6e9a16 ARM64: zynq: Fix boot.bin generation for Zynq and ZynqMP
Fix boot.bin generation for Zynq and ZynqMP.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Marek Vasut <marex@denx.de>
2016-06-06 11:23:27 +02:00
Michal Simek
d9b58b3031 tools: zynqmpimage: Add Xilinx ZynqMP boot header generation
Add support for the zynqmpimage to mkimage.
Only basic functionality is supported without encryption and register
initialization with one partition which is filled by U-Boot SPL.
For more detail information look at Xilinx ZynqMP TRM.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-05-24 11:15:01 +02:00
Michal Simek
fd2d1e0d47 kbuild: Do not append dtb for OF_EMBED case
dtb is already included in binary that's why there is no need to replace
u-boot-spl.bin with u-boot-spl-dtb.bin. This is only needed for
OF_SEPARATE is enabled. Only copy -nodtb.bin version which is straight
output from objcopy -O binary.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-05-02 18:37:11 -04:00
Masahiro Yamada
35b786780f kbuild: fix build rule of u-boot-spl.dtb
The build command of u-boot-spl.dtb is not constant, but dependent
on CONFIG_OF_SPL_REMOVE_PROPS.  Use $(call if_changed,...) so that
the change of CONFIG_OF_SPL_REMOVE_PROPS is detected.

Also, add tools/fdtgrep to the dependency to make sure u-boot-spl.dtb
is generated by the up-to-date fdtgrep in case the tool is modified.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-02-08 10:22:41 -05:00
Masahiro Yamada
514ec43892 kbuild: add missing FORCE where $(call if_changed, ) is used
FORCE is needed for $(call if_changed,...) to be evaluated every time.
Otherwise, the command is not executed when the command line has
changed but any prerequisite has not been updated.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-02-08 10:22:41 -05:00
Masahiro Yamada
8ee19a7319 kbuild: remove unneeded ifdef conditionals around build rules
These rules are only used for SOCFPGA, SUNXI, but no need to hide
them from other SoCs.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-02-08 10:22:40 -05:00
Simon Glass
bd7dc3883b socfpga: Simplify Makefile filenames
We don't need the -dtb suffix anymore, so drop it.

Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
2016-02-01 20:55:48 -05:00
Simon Glass
03c25bcd26 fdt: Build an SPL binary without device tree
At present u-boot-spl.bin holds the plain SPL binary without the device
tree. This is somewhat annoying since you need either u-boot-spl.bin or
u-boot-spl-dtb.bin depending on whether device tree is used.

Adjust the build such that u-boot-spl.bin includes a device tree
(if enabled), and the plain binary is in u-boot-spl-nodtb.bin. For now
u-boot-spl-dtb.bin remains the same.

Tested-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
2016-02-01 20:55:38 -05:00
Simon Glass
72a8cf8dcc Move all command code into its own directory
There are a lot of unrelated files in common, including all of the commands.
Moving them into their own directory makes them easier to find and is more
logical.

Some commands include non-command code, such as cmd_scsi.c. This should be
sorted out at some point so that the function can be enabled with or without
the associated command.

Unfortunately, with m68k I get this error:

m68k:  +   M5329AFEE
+arch/m68k/cpu/mcf532x/start.o: In function `_start':
+arch/m68k/cpu/mcf532x/start.S:159:(.text+0x452): relocation truncated to fit: R_68K_PC16 against symbol `board_init_f' defined in .text.board_init_f section in common/built-in.o

I hope someone can shed some light on what this means. I hope it isn't
depending on the position of code in the image.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>
2016-01-25 10:39:43 -05:00
Nathan Rossi
08598d6ee9 ARM: zynq: Add target for building bootable SPL image for Zynq
Add a build target to generate 'boot.bin' which includes SPL. This is
used by the platforms BootROM to load SPL directly.

This change also conditionally changes what the 'boot.bin' target
generates depending on the SoC. Leaving the behaviour unchanged for the
AT91 targets.

Signed-off-by: Nathan Rossi <nathan@nathanrossi.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Cc: Tom Rini <trini@konsulko.com>
Cc: Andreas Bießmann <andreas.devel@googlemail.com>
Cc: Heiko Schocher <hs@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
2015-11-19 13:09:21 +01:00
Michal Simek
8d7a2b83f9 spl: Add support for CONFIG_OF_EMBED=y
CONFIG_OF_EMBED=y is the option which is here only for testing purpose
and shouldn't be enabled by default as is describe at:
"dts: Add a comment about CONFIG_OF_EMBED being for local use"
(sha1: 3d3f60cb7a)

But still enabling this option locally shouldn't end up with compilation
error when you build SPL. This patch fix it.

Compilation error:
lib/built-in.o: In function `fdtdec_setup':
/mnt/disk/u-boot/lib/fdtdec.c:1246: undefined reference to
`__dtb_dt_begin'

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reported-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2015-11-12 18:13:21 -05:00
Simon Glass
021b4d117c dm: spl: Generate u-boot-spl-dtb.bin only when enabled
At present this file is generated even when device tree is not enabled in
SPL. Avoid this, since this file serves no purpose in that case.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2015-11-04 14:49:52 +01:00
Simon Glass
af6bbd4dae Move board_init_f_mem() into a common location
This function will be used by both SPL and U-Boot proper. So move it into
a common place. Also change the #ifdef so that the early malloc() area is
not set up in SPL if CONFIG_SYS_SPL_MALLOC_START is defined. In that case
it would never actually be used, and just chews up stack space.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-10-24 13:50:34 -04:00
Masahiro Yamada
d6c2ac5b75 spl: move SPL driver entries to driver/Makefile
Just preparing for upcoming cleaning.

The board-specific linker script  board/vpac270/u-boot-spl.lds
has been touched to avoid build error.  It does not change the
size of spl/u-boot-spl.bin for this board, so it should be OK.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Stefano Babic <sbabic@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2015-08-18 13:46:00 -04:00
Marek Vasut
333b7209ed Makefile: Add target for building bootable SPL image for SoCFPGA
Add build target for generating boot partition images recognised by
the SoCFPGA BootROM. The SoCFPGA BootROM expects four copies of the
u-boot-spl-dtb.sfp at the beginning of boot partition. Those are
u-boot-spl-dtb.bin augmented by a header with which the BootROM can
work. The u-boot-dtb.img uImage is appended to this to produce a
full boot partition image, the u-boot-with-spl-dtb.sfp . This is
the name of the final target.

Signed-off-by: Marek Vasut <marex@denx.de>
2015-08-08 14:14:10 +02:00
Dinh Nguyen
9bbd2132e3 driver/ddr/altera: Add DDR driver for Altera's SDRAM controller
This patch enables the SDRAM controller that is used on Altera's SoCFPGA
family. This patch configures the SDRAM controller based on a configuration
file that is generated from the Quartus tool, sdram_config.h.

Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
2015-08-08 14:14:05 +02:00
Tom Rini
3c9cc70d71 Merge git://git.denx.de/u-boot-marvell 2015-07-23 09:02:28 -04:00
Stefan Roese
f1df936445 arm: mvebu: Add Armada 38x DDR3 training code from Marvell bin_hdr
This patch adds the DDR3 setup and training code taken from the Marvell
U-Boot repository. This code used to be included as a binary (bin_hdr)
into the Armada A38x boot image. Not linked with the main U-Boot. With this
code addition and the serdes/PHY setup code, the Armada A38x support
in mainline U-Boot is finally self-contained. So the complete image
for booting can be built from mainline U-Boot. Without any additional
external inclusion.

Note:
This code has undergone many hours (days!) of coding-style cleanup and
refactoring. It still is not checkpatch clean though, I'm afraid. As the
factoring of the code has so many levels of indentation that many lines
are longer than 80 chars.

Signed-off-by: Stefan Roese <sr@denx.de>
2015-07-23 10:38:44 +02:00
Stefan Roese
ff9112df8b arm: mvebu: drivers/ddr: Move Armada XP DDR init code into new directory
With the upcoming addition of the Armada 38x DDR support, which is not
compatible to the Armada XP DDR init code, we need to introduce a new
directory infrastructure. To support multiple Marvell DDR controller.

This will be the new structure:

     drivers/ddr/marvell/axp
     Supporting Armada XP (AXP) devices (and perhaps Armada 370)

     drivers/ddr/marvell/a38x
     Supporting Armada 38x devices (and perhaps Armada 39x)

Signed-off-by: Stefan Roese <sr@denx.de>
2015-07-23 10:38:30 +02:00
Simon Glass
f26c8a8e77 dm: Add a clock uclass
Clocks are an important feature of platforms and have become increasing
complex with time. Most modern SoCs have multiple PLLs and dozens of clock
dividers which distribute clocks to on-chip peripherals.

Some SoC implementations have a clock API which is private to that SoC family,
e.g. Tegra and Exynos. This is useful but it would be better to have a
common API that can be understood and used throughout U-Boot.

Add a simple clock API as a starting point. It supports querying and setting
the rate of a clock. Each clock is a device. To reduce memory and processing
overhead the concept of peripheral clocks is provided. These do not need to
be explicit devices - it is possible to write a driver that can adjust the
I2C clock (for example) without an explicit I2C clock device. This can
dramatically reduce the number of devices (and associated overhead) in a
complex SoC.

Clocks are referenced by a number, and it is expected that SoCs will define
that numbering themselves via an enum.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:29 -06:00
Simon Glass
6c51df6859 dm: Add support for RAM drivers
Add support for a driver which sets up DRAM and can return information about
the amount of RAM available. This is a first step towards moving RAM init
to driver model.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:27 -06:00
Simon Glass
30987ef10b dm: power: Allow use of regulators in SPL
This functionality may be useful for setting up regulators early during
boot.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:27 -06:00
Simon Glass
5917112c9e dm: Add support for LEDs
Add a simple uclass for LEDs, so that these can be controlled by the device
tree and activated when needed. LEDs are referred to by their label.

This implementation requires a driver for each type of LED (e.g GPIO, I2C).

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:24 -06:00
Simon Glass
fa78e0a371 dm: Reduce SPL device tree size
The SPL device tree size must be minimised to save memory. Only include
properties that are needed by SPL - this is determined by the presence
of the "u-boot,dm-pre-reloc" property. Also remove a predefined list of
unused properties from the nodes that remain.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21 17:39:21 -06:00
Masahiro Yamada
3113471f3a kbuild: define DO_DEPS_ONLY for u-boot.cfg to fix build error
Since 741e58e0fc (Create a .cfg file containing the CONFIG options
used to build), all the Blackfin boards fail to build if the parallel
(-j) option is passed.

  $ make -s bf506f-ezkit_defconfig
  #
  # configuration written to .config
  #
  $ make -j8 CROSS_COMPILE=bfin-elf-
  scripts/kconfig/conf --silentoldconfig Kconfig
    CHK     include/config.h
    UPD     include/config.h
    GEN     include/autoconf.mk
    GEN     include/autoconf.mk.dep
    CHK     include/config/uboot.release
    CHK     include/generated/timestamp_autogenerated.h
    UPD     include/generated/timestamp_autogenerated.h
    CFG     u-boot.cfg
  include/asm-offsets.h:3:43: fatal error:
  generated/generic-asm-offsets.h: No such file or directory
  compilation terminated.
  make: *** [u-boot.cfg] Error 1

When parsing header files for defined CONFIG options, DO_DEPS_ONLY
must be defined to exclude generated headers that might not have
been available yet.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2015-05-28 08:18:22 -04:00
Simon Glass
741e58e0fc Create a .cfg file containing the CONFIG options used to build
At present CONFIG options are split across Kconfig and board config headers
files. Also we have multiple files containing these CONFIG options.

In order to see exactly what is being used for building, create a .cfg
file which holds these options as reported by the C preprocessor.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-04-18 16:24:24 -06:00
Masahiro Yamada
e02ee2548a kconfig: switch to single .config configuration
When Kconfig for U-boot was examined, one of the biggest issues was
how to support multiple images (Normal, SPL, TPL).  There were
actually two options, "single .config" and "multiple .config".
After some discussions and thought experiments, I chose the latter,
i.e. to create ".config", "spl/.config", "tpl/.config" for Normal,
SPL, TPL, respectively.

It is true that the "multiple .config" strategy provided us the
maximum flexibility and helped to avoid duplicating CONFIGs among
Normal, SPL, TPL, but I have noticed some fatal problems:

[1] It is impossible to share CONFIG options across the images.
  If you change the configuration of Main image, you often have to
  adjust some SPL configurations correspondingly.  Currently, we
  cannot handle the dependencies between them.  It means one of the
  biggest advantages of Kconfig is lost.

[2] It is too painful to change both ".config" and "spl/.config".
  Sunxi guys started to work around this problem by creating a new
  configuration target.  Commit cbdd9a9737 (sunxi: kconfig: Add
  %_felconfig rule to enable FEL build of sunxi platforms.) added
  "make *_felconfig" to enable CONFIG_SPL_FEL on both images.
  Changing the configuration of multiple images in one command is a
  generic demand.  The current implementation cannot propose any
  good solution about this.

[3] Kconfig files are getting ugly and difficult to understand.
  Commit b724bd7d63 (dm: Kconfig: Move CONFIG_SYS_MALLOC_F_LEN to
  Kconfig) has sprinkled "if !SPL_BUILD" over the Kconfig files.

[4] The build system got more complicated than it should be.
  To adjust Linux-originated Kconfig to U-Boot, the helper script
  "scripts/multiconfig.sh" was introduced.  Writing a complicated
  text processor is a shell script sometimes caused problems.

Now I believe the "single .config" will serve us better.  With it,
all the problems above would go away.  Instead, we will have to add
some CONFIG_SPL_* (and CONFIG_TPL_*) options such as CONFIG_SPL_DM,
but we will not have much.  Anyway, this is what we do now in
scripts/Makefile.spl.

I admit my mistake with my apology and this commit switches to the
single .config configuration.

It is not so difficult to do that:

 - Remove unnecessary processings from scripts/multiconfig.sh
  This file will remain for a while to support the current defconfig
  format.  It will be removed after more cleanups are done.

 - Adjust some makefiles and Kconfigs

 - Add some entries to include/config_uncmd_spl.h and the new file
   scripts/Makefile.uncmd_spl.  Some CONFIG options that are not
   supported on SPL must be disabled because one .config is shared
   between SPL and U-Boot proper going forward.  I know this is not
   a beautiful solution and I think we can do better, but let's see
   how much we will have to describe them.

 - update doc/README.kconfig

More cleaning up patches will follow this.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2015-02-24 17:06:23 -05:00
Simon Glass
942cb0b6a2 sunxi: Normalise FEL support
Make sunxi's FEL code fit with the normal U-Boot boot sequence instead of
creating its own. There are some #ifdefs required in start.S. Future work
will hopefully remove these.

This series is available at u-boot-dm, branch sunxi-working.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2015-02-16 20:15:09 +01:00
Stefan Roese
0cf47862bf scripts/Makefile.spl: Add MVEBU DDR code to SPL
Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Luka Perkov <luka.perkov@sartura.hr>
2015-02-06 17:24:54 +01:00
Daniel Schwierzeck
e19db555b4 Kbuild: introduce Makefile in arch/$ARCH/
Introduce a Makefile under arch/$ARCH/ and include it in the
top Makefile (similar to Linux kernel). This allows further
refactoringi like moving architecture-specific code out of global
makefiles, deprecating config variables (CPU, CPUDIR, SOC) or
deprecating arch/$ARCH/config.mk.

In contrary to Linux kernel, U-Boot defines the ARCH variable by
Kconfig, thus the arch Makefile can only included conditionally
after the top config.mk.

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Acked-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-12-08 09:35:45 -05:00
Tom Rini
1739564e75 Merge git://git.denx.de/u-boot-dm
Conflicts:
	drivers/serial/serial-uclass.c

Signed-off-by: Tom Rini <trini@ti.com>
2014-11-24 12:01:48 -05:00
Masahiro Yamada
167544e83a spl: fix descending condition to drivers/mtd/nand/
SPL should not reference CONFIG_CMD_NAND to decide whether or not
it should build drivers/mtd/nand.  CONFIG_CMD_NAND should be only
used to select the NAND utility command on the command parser.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-11-23 06:49:03 -05:00
Masahiro Yamada
165ecd26f0 kbuild: Descend into SOC directory from CPU directory
Some CPUs of some architectures have SOC directories.
At present, the build system directly descends into SOC directories
from the top Makefile, but it should generally descend into each
directory from its parent directory.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-11-23 06:49:02 -05:00
Simon Glass
1151651831 dm: spl: Allow driver model to be used
When enabled, set up driver model for SPL. This allows SPL to use the same
drivers as the main U-Boot.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Tom Rini <trini@ti.com>
2014-11-21 08:12:55 +01:00
Heiko Schocher
c001486d99 arm, at91: generate boot.bin file for all atmel SoC
generate the boot.bin file for all atmel SoC (arm920, arm926, armv7)

Signed-off-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Andreas Bießmann <andreas.devel@googlemail.com>
Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
[fix subject]
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
2014-11-17 08:47:16 -05:00
Masahiro Yamada
9adb6d2407 kbuild: fix a bug of the u-boot-spl link rule
cmd_u-boot-spl includes $(PLATFORM_LIBS) which changes
when CONFIG_USE_PRIVATE_GCC is updated.  The u-boot-spl image
should be re-linked if any prerequisite is newer than it
or the command line has changed.
$(call, if_changed,...) should be used instead of $(call cmd,...).

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-10-23 13:19:11 -04:00
Masahiro Yamada
51148790f2 kconfig: switch to Kconfig
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: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
2014-07-30 08:48:03 -04:00
Masahiro Yamada
c71630838d kbuild: move spl/Makefile to scripts/Makefile.spl
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: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-06-11 16:27:05 -04:00
Renamed from spl/Makefile (Browse further)