| Commit message (Collapse) | Author | Age | Files | Lines |
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All 64-bit architectures are supposed to define CONFIG_64BIT to support
the relevant 64-bit MMIO accessors. The sandbox architecture is a bit
of a special case, because barebox uses the toolchain default and
doesn't force a bitness. Add 64BIT as promptless symbol, which reflects
the pointer size of the target platform.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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With this include, we can have goodies like $(cc-option ...) and
$(success ...) inside our Kconfig files.
gcc-version also now becomes available. While unused for now, it can
allow us to selectively turn on warnings on new GCC versions, which
were previously disabled because of their too high false positive rate.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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If selected, we generate a mvebuimg binary that should be ignored by
version control. Add .gitignore entry to do so.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Starting v4.13, Linux always uses thin archive instead of relocatable
ELF to combine builtin objects.
The thin archive is basically a text file that only contains paths to
object files.
As Linux commit 98ced886dd79 mentioned, this has a lot of benefits:
- save disk space for builds
- speed-up building a little
- fix some issues when liking a giant executable (for example,
allyesconfig on ARM Linux)
- work better with dead code elimination
The last one is important for barebox because pbl highly relies on the
dead code elimination (-f{function,data}-sections and --gc-sections)
dropping symbols that are unreachable from the linker's entry point.
The dead code elimination does not work if the same symbol names are
used in the pevious incremental link mechanism because the same name
symbols all go into the same section.
Commit a83c97f2a406 ("ARM: socfpga: generate smaller images when
multiple boards are selected") worked around it by giving a dedicate
section to each of the same name symbols. This workaround can go away.
built-in.o was renamed to built-in.a since it is now an archive.
built-in-pbl.o was renamed to built-in.pbl.a for consistency.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The current Linux uses the unified build command for built-in objects
and module objects. This is possible because part-of-module is set to
y when the target is being built for a module. If so, quiet_modtag is
set to [M], and modkern_cflags is set to KBUILD_CFLAGS_MODULE instead
of KBUILD_CFLAGS_KERNEL.
Currently, barebox uses a separate build command for pbl, but the
difference between cmd_cc_o_c and cmd_pbl_cc_o_c is just
"-D__PBL__ $(PBL_CPPFLAGS)".
By using the same approach as Linux, they can be unified.
Set part-of-pbl flag to y when the target is being built for pbl.
Merge cmd_as_o_S and cmd_link_o_target as well.
This also changes the shortlog style as follows:
PBLCC -> CC [P]
PBLAS -> AS [P]
PBLLD -> LD [P]
This is more consistent with the policy in the Linux build system.
In Linux, a capital letter enclosed square blackets indicates which
target the object is being built for.
CC object built for built-in
CC [M] object built for modules
CC [U] object built for userspace (proposed for Linux 5.8-rc1)
The idea behind this is we use the same compiler $(CC) for them.
Only the difference is the compiler flags. On the other hand, host
programs are compiled by a different tool, $(HOSTCC), hence the
shortlog is 'HOSTCC'.
Barebox supports module builds (it seems), but the [P] notation does
not conflict with [M] because pbl has a limited memory footprint.
We never expect pbl can support the module feature.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The latest Linux calculates them more simply; part-of-module is set
when the target is being built for a module.
Also, rename real-objs-{y,m} to real-obj-{y,m}.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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You can save one line.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Kbuild automatically creates the output directories for O= builds.
Previously it called mkdir too much. Linux optimized this a lot.
Let's import the outcome so it works faster.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The embedded DTBs are compiled by the chain of pattern rules as follows:
%.dts -> %.dtb -> %.dtb.S -> %.dtb.o for barebox proper
%.dts -> %.dtb -> %.dtb.S -> %.dtb.pbl.o for pbl
Barebox introduced {obj,pbl,lwl}-dtb-y syntax to put the intermediate
files into extra-y. The purposes of doing so were:
[1] prevent GNU Make from deleting the intermediate files
[2] include .*.cmd files
In contrast, Linux does not use a special syntax for embedding DTBs
into the kernel.
For example, as you see in arch/sh/boot/dts/Makefile of Linux 5.6,
obj-y += <basename>.dtb.o
... just works.
This is because scripts/Kbuild.include specifies .SECONDARY to cater
to [1], and scripts/Makefile.build adds the intermediates to 'targets'
to deal with [2].
Barebox had already imported the same code from Linux, so you can use
obj-y instead of obj-dtb-y, like Linux.
pbl-dtb-y and lwl-dtb-y are barebox-specific cases, so I added the
%.dtb.pbl.o pattern to intermediate_targets.
Going forward, please use obj-y, pbl-y, or lwl-y.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Currently, pbl objects are output to:
<directory-path>/pbl-<basename>.o
This commit changes as follows:
<directory-path>/<basename>.pbl.o
The motivation is not only to get rid of the ugly code introduced by
commit 257abdaa36c8 ("Do not rm the path from pbl-y target"), but also
to make it easier to remove obj-dtb-y, pbl-dtb-y, lwl-dtb-y syntax in
the next commit.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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write will never return 0 on POSIX conformant systems. Remove this error
path.
Also, close the file on error.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Errors are propagated in the loop and ret is never set. Remove it.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The CREDITS file was removed from barebox in 2015 by commit 6570288f2d97
("Remove the CREDITS file"). Remove references to it from several files.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Extend the script by some code from the official list_undefined.py example[1]
to further detect symbols we are using, but haven't defined anywhere.
[1]: https://github.com/ulfalizer/Kconfiglib/blob/35a60b7/examples/list_undefined.py
Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This kconfig linter can do some useful analysis to find problems
in our Kconfig files. Import it into barebox source tree with the
changes necessary to be usable.
The results of running it should be taken with a grain of salt and
verified with grep.
Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The prologue of the build system is not specific to Linux or Barebox.
Paritially resync with Linux 5.7-rc4
- In Linux, $(objtree) is always '.', and $(srctree) might be relative.
I am keeping both absolute for now to avoid unexpected breakage.
- I did not resync single target for now. We need to touch
Makefile.build a lot if we want to resync it.
- 'export CDPATH=' is Barebox-only code, which was added by
commit 6cc8d0544658 ("Makefile: disable CDPATH"). Keep it.
- KBUILD_SRC no longer exists in the upstream Linux. I replaced it
with building_out_of_srctree.
- scripts/mkmakefile does not contain anything specific to Linux or
Barebox. Resync it with Linux 5.7-rc4
- scripts/tags was imported from Linux 3.6 with some cherry-picks on
top of that. Resync it with Linux 5.7-rc4
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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More random cherry-picks for scripts/Kbuild.include
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Resync cmd, if_change, if_changed_dep, and if_changed_rule.
Clean up the users of if_changed_rule.
I deleted the modversions rule. It is dead code because barebox
does not define CONFIG_MODVERSIONS. It does not work without
scripts/genksyms/ anyway.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The 'filechk' in the latest Linux works more simply, reliably.
- Do not show CHK every time
- Delete the *.tmp file when the filechk_$(1) fails
- Do not open the first prerequisite. This is unneeded in most cases.
I deleted pointeless dependency on Makefile.
Also delete the meaningless assignment to 'targets' because filechk
does not generate .cmd file.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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A couple of arch directories in Linux are biarch, that is, a single
arch/*/ directory supports both 32-bit and 64-bit.
In old days of Linux, they started as separated directories.
arm/arm64 is the exceptional case, but the other architectures were
unified.
e.g.)
arch/i386, arch/x86_64 -> arch/x86
arch/sh, arch/sh64 -> arch/sh
arch/sparc, arch/sparc64 -> arch/sparc
Linux commit 6752ed90da03 ("Kbuild: allow arch/xxx to use a different
source path") introduced SRCARCH to point to the arch directory, still
allowing to pass in the former ARCH=i386 or ARCH=x86_64.
The top Makefile in Linux converts ARCH to SRCARCH as follows:
# Additional ARCH settings for x86
ifeq ($(ARCH),i386)
SRCARCH := x86
endif
ifeq ($(ARCH),x86_64)
SRCARCH := x86
endif
So, if you follow the upstream Kbuild convention, using arch/$(SRCARCH)
is the correct way to point to the arch directory.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Just get rid of the argument $(ARCH), then hardcode MODULE_SYMBOL_PREFIX.
This should have no impact because none of v850, h8300, blackfin is
supported by barebox.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The previous sync was Linux 5.5. This updates Kconfig to Linux 5.7-rc2.
Highlights:
- add yes2modconfig and mod2yesconfig, which are useful for coping with
syzbot configs in Linux
- remove include/config/tristate.conf
- show more precise help
- fix various issues of 'make xconfig'
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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In old days, Linux also used to use well-known variables such CFLAGS,
CPPFLAGS, etc.
They were prefixed with KBUILD_ presumably for preventing users from
overriding them accidentally.
Rename as follows:
CFLAGS -> KBUILD_CFLAGS
AFLAGS -> KBUILD_AFLAGS
CPPFLAGS -> KBUILD_CPPFLAGS
LDFLAGS -> KBUILD_LDFLAGS
HOSTCFLAGS -> KBUILD_HOSTCFLAGS
HOSTCXXFLAGS -> KBUILD_HOSTCXXFLAGS
HOSTLDFLAGS -> KBUILD_HOSTLDFLAGS
HOST_LOADLIBES -> KBUILD_HOSTLDLIBS
HOSTCFLAGS, HOSTCXXFLAGS, HOSTLDFLAGS, HOSTLDLIBS are re-used to allow
users to pass-in additional flags to the host compiler.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Some Makefiles use ccflags-y, but it is not actually supported.
Support ccflags-y, asflags-y, cppflags-y, and ldflags-y like Linux.
Remove the workaround in drivers/pci/Makefile.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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I missed to sync this line in commit 421108c51da4 ("kbuild: rename
hostprogs-y/always to hostprogs/always-y").
Since then, the files in always(-y) are needlessly rebuilt.
Fixes: 421108c51da4 ("kbuild: rename hostprogs-y/always to hostprogs/always-y")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Same as the upstream fix for building dtc with gcc 10.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Fixes a warning while compiling zynq_mkimage.c
scripts/zynq_mkimage.c:312:2: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Wunused-result]
fread returns the number bytes read, if it is not equal to st_size some error has happend
Signed-off-by: Michael Graichen <michael.graichen@hotmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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scripts/basic/ works for barebox as drop-in.
Update scripts/basic/ to Linux 5.7-rc1.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Import the following commits from Linux, and re-sync.
- 6ba7dc6616ce
"kbuild: make bison create C file and header in a single pattern rule"
- cf8dfd15e5fb
"kbuild: move flex and bison rules to Makefile.host"
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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[ Linux commit 5f2fb52fac15a8a8e10ce020dd532504a8abfc4e ]
In old days, the "host-progs" syntax was used for specifying host
programs. It was renamed to the current "hostprogs-y" in 2004.
It is typically useful in scripts/Makefile because it allows Kbuild to
selectively compile host programs based on the kernel configuration.
This commit renames like follows:
always -> always-y
hostprogs-y -> hostprogs
So, scripts/Makefile will look like this:
always-$(CONFIG_BUILD_BIN2C) += ...
always-$(CONFIG_KALLSYMS) += ...
...
hostprogs := $(always-y) $(always-m)
I think this makes more sense because a host program is always a host
program, irrespective of the kernel configuration. We want to specify
which ones to compile by CONFIG options, so always-y will be handier.
The "always", "hostprogs-y", "hostprogs-m" will be kept for backward
compatibility for a while.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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In commit 796af3473b82 ("dts: update to v5.2-rc1")
vendor-prefixes.txt has been converted to a DT schema.
Update the checkpatch.pl DT check to extract vendor prefixes from the new
vendor-prefixes.yaml file.
Based on this linux kernel commit 852d095d16a6
("checkpatch.pl: Update DT vendor prefix check").
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The previous sync was Linux 5.3-rc3. This updates Kconfig to Linux 5.5.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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[ Linux commit 54b8ae66ae1a3454a7645d159a482c31cd89ab33 ]
Kbuild provides per-file compiler flag addition/removal:
CFLAGS_<basetarget>.o
CFLAGS_REMOVE_<basetarget>.o
AFLAGS_<basetarget>.o
AFLAGS_REMOVE_<basetarget>.o
CPPFLAGS_<basetarget>.lds
HOSTCFLAGS_<basetarget>.o
HOSTCXXFLAGS_<basetarget>.o
The <basetarget> is the filename of the target with its directory and
suffix stripped.
This syntax comes into a trouble when two files with the same basename
appear in one Makefile, for example:
obj-y += foo.o
obj-y += dir/foo.o
CFLAGS_foo.o := <some-flags>
Here, the <some-flags> applies to both foo.o and dir/foo.o
The real world problem is:
scripts/kconfig/util.c
scripts/kconfig/lxdialog/util.c
Both files are compiled into scripts/kconfig/mconf, but only the
latter should be given with the ncurses flags.
It is more sensible to use the relative path to the Makefile, like this:
obj-y += foo.o
CFLAGS_foo.o := <some-flags>
obj-y += dir/foo.o
CFLAGS_dir/foo.o := <other-flags>
At first, I attempted to replace $(basetarget) with $*. The $* variable
is replaced with the stem ('%') part in a pattern rule. This works with
most of cases, but does not for explicit rules.
For example, arch/ia64/lib/Makefile reuses rule_as_o_S in its own
explicit rules, so $* will be empty, resulting in ignoring the per-file
AFLAGS.
I introduced a new variable, target-stem, which can be used also from
explicit rules.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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[ Linux comit 1634f2bfdb846ed0a8b73131a9dff7c420fb3fe1 ]
The only the difference between clean-files and clean-dirs is the -r
option passed to the 'rm' command.
You can always pass -r, and then remove the clean-dirs syntax.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Newer gcc complain about missing mode argument when a new file is
created. This is an extract of man-pages:
"The mode argument specifies the file mode bits be applied when
a new file is created. This argument must be supplied when
O_CREAT or O_TMPFILE is specified in flags"
Signed-off-by: Franck Jullien <franck.jullien@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Most things valid for the i.MX8MQ are needed for the i.MX8MM as well, so
add a common macro which returns true for both SoCs and use it where
appropriate. Also we have to search for the i.MX header in a bigger area
as it is at offset 33KiB.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This adds the host part for 2nd stage uploading in case the RAM setup is
done in code. This works in conjunction with "usb: gadget: fsl_udc: Add
PBL image loading support".
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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include/scripts/linux/kernel.h included via #include <linux/kernel.h>
later on already defines these three macros. Remove them here to avoid
the warnings about the duplicate macro definition.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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