We will need this for stack memory protection scenarios
where a writable GDT with Task State Segment descriptors
will be used. The addresses of the TSS segments cannot be
put in the GDT via preprocessor magic due to architecture
requirments that the address be split up into different
fields in the segment descriptor.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This is one less host tool we have to compile for every build,
and makes the build tools more portable across host OSes.
The code is also much simpler to maintain.
Issue: ZEP-2063
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Zephyr supports the flash and debug targets via per-board information
in Makefile.board files.
It is sometimes convenient to know this information when inspecting
the build artifacts or doing exotic builds, so include it in the file
generated by outputexports. The information in Makefile.board provides
what is needed.
Therefore, ensure that Makefile.board, when present, is included by
the generated Makefile.export. This gives users of Makefile.export
access to variables like FLASH_SCRIPT, PYOCD_TARGET, etc. (These users
need to cope with these variables being undefined if not given in
Makefile.board, or if Makefile.board does not exist for a target.)
While we're here, don't export INSTALLKERNEL. That's Linux-specific
and otherwise unused; the Zephyr equivalent is FLASH_SCRIPT and its
associated variables.
Signed-off-by: Marti Bolivar <marti.bolivar@linaro.org>
By having this as a Python script rather than a host executable, this
should simplify the build process on non-Unix platforms.
With this change, pyelftools is now required to build Zephyr. Please
consult the getting started documentation for your host platform for
installation instructions.
Jira: ZEP-2062
Signed-off-by: Leandro Pereira <leandro.pereira@intel.com>
Modern GCC can be configured to default to PIE. To support
such toolchains, turn PIE off as otherwise the generated
binaries are broken in multiple ways (e.g. the ELF will have
additional sections that get inserted at end of _TEXT_SECTION
making __data_rom_start point to these sections and not
the data secions).
Signed-off-by: Timo Teräs <timo.teras@iki.fi>
To prepare for upcoming memory protection features, we need to
distinguish between objects that are owned by the kernel itself
(and will be protected with supervisor permissions) and those
objects which are properly part of the application.
The current policy will be to place in libapplication.a anything
under lib/ (such as the C library), the application itself, and
additional libaries specified by KBUILD_ZEPHYR_APP.
These entities will no longer end up in libzephyr.a, which will
let us do output section routing in the linker script on a
per-file basis.
Some of the internal variables have been combined and simplified.
Issue: ZEP-2184
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This patch adds a separate target for config-sanitycheck that will
generate a .config-sanitycheck file that contains both Kconfig and DTS
config information.
Signed-off-by: Andy Gross <andy.gross@linaro.org>
Makefile rule to create the MMU page tables at boot time. This
rule invokes the gen_mmu.py script to create a binary which is
then placed into the kernel image using objcopy.
Makefile.mmu is included only when CONFIG_X86_MMU is enabled.
JIRA: ZEP-2095
Signed-off-by: Adithya Baglody <adithya.nagaraj.baglody@intel.com>
On MSYS2, the #include paths for GCC need to be in native format
(Windows-style paths) since GCC is a native Windows application and
therefore requires standard paths.
Signed-off-by: Carles Cufi <carles.cufi@nordicsemi.no>
This patch adds a dts config include file that is sourced during builds.
The config file contents are key value pairs derived from the DTS board
descriptions.
Jira: ZEP-2119
Change-Id: I4d50e795ba776645b56f0b83410cbb5b0a8fd4fa
Signed-off-by: Andy Gross <andy.gross@linaro.org>
Use argeparse for options and add a fixup option to add on top of
generated file. This was previously done in the top Makefile and was
generated defines outside of the header main if statement.
Jira: ZEP-2147
Change-Id: If65f34a11de27baa770d4ce0ef4fca2abbd30258
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Since MSYS2 provides a UNIX-like environment, treating it as a Windows
build caused issues with the paths.
Signed-off-by: Carles Cufi <carles.cufi@nordicsemi.no>
For various reasons its often necessary to generate certain
complex data structures at build-time by separate tools outside
of the C compiler. Data is populated to these tools by way of
special binary sections not intended to be included in the final
binary. We currently do this to generate interrupt tables, forthcoming
work will also use this to generate MMU page tables.
The way we have been doing this is to generatea "kernel_prebuilt.elf",
extract the metadata sections with objcopy, run the tool, and then
re-link the kernel with the extra data *and* use objcopy to pull
out the unwanted sections.
This doesn't scale well if multiple post-build steps are needed.
Now this is much simpler; in any Makefile, a special
GENERATED_KERNEL_OBJECT_FILES variable may be appended to containing
the filenames to the generated object files, which will be generated
by Make in the usual fashion.
Instead of using objcopy to pull out, we now create a linker-pass2.cmd
which additionally defines LINKER_PASS2. The source linker script
can #ifdef around this to use the special /DISCARD/ section target
to not include metadata sections in the final binary.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
The build process of the host tools requires fixdep, when prebuilt host
tools are enabled and no host-tools are available (i.e. after a 'make
mrproper'), the build would fail because of the dependency. So make sure
we point to the in tree fixdep binary when building.
Change-Id: I8311f870d90b32ba56c821bb8533379f57003a8d
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
To speed up builds, this change allows building the needed host tools
that are built for every application and stores them un
${ZEPHYR_BASE}/bin.
Run 'make host-tools' and then define PREBUILT_HOST_TOOLS to reuse the
host tools across multiple builds.
$ make host-tools
HOSTCC scripts/basic/fixdep
HOSTCC scripts/gen_idt/version.o
HOSTCC scripts/gen_idt/gen_idt.o
HOSTLD scripts/gen_idt/gen_idt
HOSTCC scripts/gen_offset_header/gen_offset_header.o
HOSTLD scripts/gen_offset_header/gen_offset_header
HOSTCC scripts/kconfig/conf.o
SHIPPED scripts/kconfig/zconf.tab.c
SHIPPED scripts/kconfig/zconf.lex.c
SHIPPED scripts/kconfig/zconf.hash.c
HOSTCC scripts/kconfig/zconf.tab.o
HOSTLD scripts/kconfig/conf
$ export PREBUILT_HOST_TOOLS=${ZEPHYR_BASE}/bin
$ make -C samples/hello_world
Now you will notice a speedup when building the application!
Change-Id: Ie0aeee7f9a60b1fd49e7e32d78601f03473d73b8
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
This patch adds an actual dts target for builds. This required moving the
rules from Kbuild to Makefile and adding the correct dependencies to targets
requiring the dts files.
JIRA: ZEP-1979
Change-Id: I6ad568e2a821630911623cb227aa303fbf388515
Signed-off-by: Andy Gross <andy.gross@linaro.org>
This is intended as a temporary fix for ZEP-1882.
Investigation for this bug has shown that the current SDK 0.9 compiler
for ARC generates incorrect code under -Os optimization level.
Kuo-Lang Tseng found out that SDK 0.8.2 does not have this issue, and
that lowering optimization level to -O2 fixes the issue with SDK 0.9.
Juro Bystricky is working on an updated SDK with ARC GCC 6.3.0, but
there are still problems with it, so he also suggested to use -O2 in
the meantime.
Instead of blindly setting -O2 for all toolchains and architectures,
let Makefile.toolchain.zephyr make the decision for ARC and 0.9 only.
Tested with hello_world, CONFIG_ADC=y and BOARD=arduino_101_sss.
Jira: ZEP-1882
Change-Id: Ifde2e3950c9d93eed8982149805acfda9d13a94f
Signed-off-by: Patrice Buriez <patrice.buriez@intel.com>
This patch fixes an issue where any make target executing the the clean
from the root source directory would remove the dts directory. This is
not necessary and can cause build issues on following make commands.
ZEP-1968
Change-Id: I2cc751d8fd24bd77e425860686b66644ade44eeb
Signed-off-by: Andy Gross <andy.gross@linaro.org>
MSYS2 is a modern fork of Cygwin that is widely supported
and provides frequent releases and good support. It is
also the framework used by the official Windows Git port.
This patch adds MSYS2 support so that builds on Windows using
MSYS2 work properly.
Change-Id: Ia5743a410d1cff983a7aab37f8e3d8228cb8ae8e
Signed-off-by: Carles Cufi <carles.cufi@nordicsemi.no>
This starts development on master for Zephyr 1.8
Change-Id: I81484f09cd4ed90c276f2901be90132af90c2208
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Some GCC variants don't support this. Moved later in the Makefile
after the toolchain Makefile has been included so the test works
properly.
Change-Id: Ia9ec2582c486197ea3df3d878173643c14786408
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
XCC does not support compiler option -fno-defer-pop.
Change-Id: Ic47714331502b10e5e1e510984991615fe801696
Signed-off-by: Mazen NEIFER <mazen@nestwave.com>
This is a new mechanism for generating interrupt tables which will
be useful on many architectures. It replaces the old linker-based
mechanism for creating these tables and has a couple advantages:
1) It is now possible to use enums as the IRQ line argument to
IRQ_CONNECT(), which should ease CMSIS integration.
2) The vector table itself is now generated, which lets us place
interrupts directly into the vector table without having to
hard-code them. This is a feature we have long enjoyed on x86
and will enable 'direct' interrupts.
3) More code is common, requiring less arch-specific code to
support.
This patch introduces the common code for this mechanism. Follow-up
patches will enable it on various arches.
Issue: ZEP-1038, ZEP-1165
Change-Id: I9acd6e0de8b438fa9293f2e00563628f7510168a
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This patch adds support for using device tree configuration files for
configuring ARM platforms.
In this patch, only the FLASH_SIZE, SRAM_SIZE, NUM_IRQS, and
NUM_IRQ_PRIO_BITS were removed from the Kconfig options. A minimal set
of options were removed so that it would be easier to work through the
plumbing of the build system.
It should be noted that the host system must provide access to the
device tree compiler (DTC). The DTC can usually be installed on host
systems through distribution packages or by downloading and compiling
from https://git.kernel.org/pub/scm/utils/dtc/dtc.git
This patch also requires the Python yaml package.
This change implements parts of each of the following Jira:
ZEP-1304
ZEP-1305
ZEP-1306
ZEP-1307
ZEP-1589
Change-Id: If1403801e19d9d85031401b55308935dadf8c9d8
Signed-off-by: Andy Gross <andy.gross@linaro.org>
Arch-specific stuff shouldn't be in the toplevel Makefile,
forthcoming patches will soon introduce special interrupt
handling logic for other arches.
Change-Id: Ib5a86cbdf5b32ecfce9e5e234f7cbea2bc3ce9c1
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Currently CONFIG_OMIT_FRAME_POINTER is a boolean and defaults to N,
which increases code size. This is intended to improve debugability
but on many architectures the use of this option does not actually
compromise debugging. Further the compiler already knows whether or not
omitting the frame pointer is harmful to debugging and its defaults
are selected accordingly.
By making this choice optional we can have a sane default on *all*
architectures by letting the compiler decide for us.
This patch significantly improves the default code generation on
arm (thumb), nios2 and arc. The benefit looks to be about between 5%
and 10% code size reduction depending upon architecture). x86 is
unaffected.
Change-Id: I5790634a40e2462cc1089dce4087040833793ae7
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
This avoids asm files from having to explicitly define the _ASMLANGUAGE
symbol themselves.
Change-Id: I71f5a169f75d7443a58a0365a41c55b20dae3029
Signed-off-by: Benjamin Walsh <walsh.benj@gmail.com>
make build process less verbose and enable 'make htmldocs' from the top
tree without a need for ZEPHYR_GCC_VARIANT to be defined.
Change-Id: I385667e3d240205913fa806b7481d5ed4e83fbc4
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
This will replace the current goal of 'make qemu' with 'make run' and
moves Qemu handling into its own file and into the boards instead of
being architecture specific.
We should be able to add new boards that support some other type of
emulation (by adding scripts/Makefile.<emu type>) and allow the board to
define their own options for the use type of emulation.
'make qemu' will still work, however it will be deprecated, starting
with this commit it is recommended to use 'make run'.
Jira: ZEP-359
Change-Id: I1cacd56b4ec09421a58cf5d010e22e9035214df6
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Use the existing debugserver target also for Qemu debugging. Qemu
should be maintained as one of many emulation/simulations platforms and
emulation should be abstracted in the Makefiles and not tied to Qemu.
qemugdb will still work, it is however being deprecated.
Change-Id: I0cd10fb66debb939b8f7f1304bf2ef4605da6a1d
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Also remove mentions of unified kernel in various places in the kernel,
samples and documentation.
Change-Id: Ice43bc73badbe7e14bae40fd6f2a302f6528a77d
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
* Moved networking code into subsys/net.
* Renamed net/yaip to net/ip at the same time.
* Fixed the tests/net to compile
* Fixed the Makefiles and Kconfig files in subsys/net
to use the new location of the IP stack
Change-Id: Ie45d9e8cb45a93fefdf969b20a81e3b1d3c16355
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If a particular project needs to add additional data to the
binary image, in most cases the entire linker script needs to
forked into the project space, causing maintenance issues if
the main linker script is changed.
Now we add some Kconfig options to allow a project to specify
some additional linker scripts which get included by the main
one in a few key areas:
1) In the definition to the 'rodata' section, which can allow
additional data to be included in this ROM section.
2) In the definition to the 'datas' section, which allows
additional data to be included in this RAM section.
3) Arbitrary additional sections to be included at the end of
the binary.
For 1 and 2, this is useful to include data generated outside of
the normal C compilation, such as data structures that are created
by special build tools.
3 is useful for including arbitrary binary blobs inside the final
image, such as for peripheral or co-processor firmware.
Change-Id: I5738d3d6da25f5bc96cda8ae806bf1a3fb34bd5d
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This commit adds the __ZEPHYR__ define to the main Makefile.
This new define may help to drive conditional compilation when
writing multi-platform applications.
Change-Id: I81a37f9c86fa7f85bbac7cd0c0cd4150cbff1911
Signed-off-by: Flavio Santes <flavio.santes@intel.com>
This reverts commit 608abd987c.
This change is breaking build dependencies.
Change-Id: Id8e9dbfc14b72933c402d25847615cddbfaca40d
Jira: ZEP-1291
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
This will allow making some arch-specfic parts arch-agnostic. Some
definitions that are currently in arch/<arch>/include will end up in
kernel/unified/include.
Change-Id: I4df71090e20a5599e70fb578b36f9211411b56ad
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
