Commit graph

970 commits

Author SHA1 Message Date
Martí Bolívar c11b7852d1 Kconfig: add CONFIG_BOARD_REVISION
Propagate the board revision to Kconfig via the environment.

This is useful for application code to have access to for similar
reasons that CONFIG_BOARD is useful.

Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>
2022-04-08 10:30:54 -07:00
Yuval Peress 1ec0c6f530 build: make non zephyr/ include prefix configurable
Add a Kconfig to disable non prefixed includes. By setting
`CONFIG_LEGACY_INCLUDE_PATH=n` developers can disable having
`include/zephyr` in the search path. This means that includes such
as `#include <kernel.h>` will no longer work.

Internally, every header should be updated to add the `zephyr/`
prefix to the headers. Only then, will developers be able to use
this config value for their applications.

Signed-off-by: Yuval Peress <peress@google.com>
2022-04-08 19:03:32 +02:00
Yuval Peress 53ef68d459 include: Prefix includes to use a scope
Move include paths and add new target_include_directories to support
backwards compatibility:
* /include -> /include/zephyr
  example: <irq.h> -> <zephyr/irq.h>

Issue #41543

Signed-off-by: Yuval Peress <peress@google.com>
2022-04-08 19:03:32 +02:00
Gerard Marull-Paretas 671067bd61 cmake: linker: lld: add missing -imacros flag
The autoconf.h macros were not passed to the CMake custom command for
linker script generation.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
2022-04-05 11:18:20 +02:00
Carlo Caione 18914ccdd4 devicetree_regions: Remove path fallback and sanitize name
This patch is doing two things:

- it is removing the fallback on the path. This is not possible anymore
  since the DT binding file is now actually requiring the
  'zephyr,memory-region' property to be present from which the region
  name is obtained.

- it is sanitizing the name when CONFIG_CMAKE_LINKER_GENERATOR is used
  or not.

Signed-off-by: Carlo Caione <ccaione@baylibre.com>
2022-03-31 10:29:31 +02:00
Evgeniy Paltsev fabe038395 ARC: hs6x: gcc-m-cpu: update mcpu to be aligned with new toolchain
New ARCv3 GNU toolchain uses hs6x mcpu value for hs6x CPUs, the older
one allows to use any mcpu value.

Update old 'arc64' mcpu to 'hs6x' to be aligned with new toolchain

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Evgeniy Paltsev <PaltsevEvgeniy@gmail.com>
2022-03-24 08:15:01 -04:00
Stephanos Ioannidis 07e4d08554 cmake: Use Zephyr SDK by default on all host operating systems
This commit updates the Zephyr build system to use the Zephyr SDK by
default for all host operating systems, when `ZEPHYR_TOOLCHAIN_VARIANT`
environment variable is not explicitly set.

Note that the Zephyr SDK is now available on all three major host
operating systems (i.e. Linux, macOS, Windows), and there is no reason
to exclude this behaviour for non-Linux hosts anymore.

Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
2022-03-24 11:45:05 +01:00
Nathan Krueger 6a5520c626 arch/riscv: Adding KConfig options for 'A' and 'M' RISC-V extensions
New KConfig options for 'A' and 'M' RISC-V extensions have been
added.  These are used to configure the '-march' string used by GCC
to produce a compatible binary for the requested RISC-V variant.
In order to maintain compatibility with all currently defined SoC,
default the options for HW mul / Atomics support to 'y', but allow
them to be overridden for any SoC which does not support these.

I tested this change locally via twister agaisnt a few RISC-V platforms
including some 32bit and 64bit. To verify the 4 possibilities of Atomics
& HW Mul: (No, No), (No, Yes), (Yes, No), (Yes, Yes -- current behavior),
I used an out-of-tree GCC (xPack RISC-V GCC) which has multilib support
for rv32i, rv32ia, rv32ima to test against our out-of-tree Intel Nios V/m
processor in HW.  The Zephyr SDK RISCV GCC currently does not contain
multilib support for all variants exposed by these new KConfig options.

Signed-off-by: Nathan Krueger <nathan.krueger@intel.com>
2022-03-22 18:00:32 -04:00
David Leach c243da02ed code_relocation: Move NOCOPY flag to avoid OS drive colon
COPY/NOCOPY flag was added to the end of the string with ':'
as separators. The python script then split the line on ':'
which breaks on Windows build because the string was

[MEM]:[FILE]:[COPY]

In windows you will have 'c:\' in the file path so the
line.split() in script will split on the 'c:'.

Move the COPY/NOCOPY to:

[MEM]:[COPY/NOCOPY]:[FILE]

Note that the comments at top of gen_relocate_app.py also
indicates this format.

Fixes #43950

Signed-off-by: David Leach <david.leach@nxp.com>
2022-03-22 12:33:40 +01:00
Carlo Caione bc72fb67b1 linker: Create sections from zephyr,memory-region nodes
Currently when a node has a 'zephyr,memory-region' compatible and a
'zephyr,memory-region' string property, a new memory region is created
in the linker script.

Having a memory region without a section to place variables in could be
not that useful. With this patch we extend the memory-region mechanism
to also create sections.

The user can then place variables in the sections as usual by using for
example the GCC attributes.

Signed-off-by: Carlo Caione <ccaione@baylibre.com>
2022-03-19 14:32:17 -04:00
Nazar Kazakov f483b1bc4c everywhere: fix typos
Fix a lot of typos

Signed-off-by: Nazar Kazakov <nazar.kazakov.work@gmail.com>
2022-03-18 13:24:08 -04:00
Torsten Rasmussen a5ad4e8a56 cmake: reuse interface lib for compile options if it already exists
Fixes: #43835

In zephyr_library_compile_options() the existence of the compile
options interface library is checked and function returns if it already
exists. This results in #43835 meaning two libraries cannot add the
same option.

This commit fixes this by re-using the already created unique interface
library and link this to the Zephyr library.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2022-03-18 10:14:52 +01:00
Torsten Rasmussen a199291ddc cmake: remove base_name for dep file
With CMake 3.20 relative path inside DEPFILEs are treated relative to
CMAKE_CURRENT_BINARY_DIR and are transformed by CMake in its internal
dep file.

Therefore Zephyr build system must no longer add `base_name` to the
`-MT` argument for the preprocessor.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2022-03-17 11:37:07 +01:00
Jaxson Han a072a801e7 cmake: armfvp: Remove the unnecessary parameters
The Armv8R aarch64 is compiled with armv8.4-a, so the atomic_cas is
implemented by casal instruction, which needs FVP booting with
'-C bp.dram.enable_atomic_ops=1'

However, the FVP >= 11.17 has changed its parameters
'-C bp.dram.enable_atomic_ops' to '-C bp.s_dram.enable_atomic_ops' and
'-C bp.sram.enable_atomic_ops' to '-C bp.s_sram.enable_atomic_ops',
which is very annoying.

To fix this issue, disable LSE feature of GCC with 'armv8.4-a+nolse'.

Signed-off-by: Jaxson Han <jaxson.han@arm.com>
2022-03-16 09:19:44 -05:00
Jaxson Han 1a682680a7 cmake: armfvp: Improve the FVP version check
Print a warning message on 'west build -t run', if the FVP does not meet
the minimal requirement. The check acts as a reminder instead of an
entrance guard. So, the check won't stop executing the FVP program.

Signed-off-by: Jaxson Han <jaxson.han@arm.com>
2022-03-16 09:19:44 -05:00
Yonatan Schachter 0f73144ee9 cmake: Add compiler property for disabling pointer arithmetic warnings
Add a compiler property for disabling pointer arithmetic warnings,
and implement that property for GCC.

Signed-off-by: Yonatan Schachter <yonatan.schachter@gmail.com>
2022-03-16 10:24:32 +01:00
Nazar Kazakov 9713f0d47c everywhere: fix typos
Fix a lot of typos

Signed-off-by: Nazar Kazakov <nazar.kazakov.work@gmail.com>
2022-03-14 20:22:24 -04:00
Jim Tan c31cb0075a cmake: fix out of tree hal build fail
Fix out of tree building hal fail with different drive on windows.

Signed-off-by: Jim Tan <KuoChun.Tan@ite.com.tw>
2022-03-11 15:46:54 -08:00
Julien Massot 59aae63f51 arch: arm: Add support for Cortex-R52
Cortex-R52 is an ARMv8-R processor with AArch32 profile.

Signed-off-by: Julien Massot <julien.massot@iot.bzh>
2022-03-11 10:59:48 +01:00
Damian Krolik a505148d2f scripts: enforce module name uniqueness
Although CMake scripts already support duplicated module
names, if two modules with the same name provide different
Kconfig files, then both files will be loaded leading to
potential conflicts.

Modify zephyr_module.py to enforce that all modules are
uniquely named so that it is possbile to override some of
the built-in modules using ZEPHYR_EXTRA_MODULES variable.

Signed-off-by: Damian Krolik <damian.krolik@nordicsemi.no>
2022-03-10 09:47:58 -05:00
Joakim Andersson 5ee41d8b4e scripts: size_report: Add support for TF-M and BL2 image size reports
Add support for TF-M and BL2 image size reports.
This adds the following targets when TF-M or BL2 is enabled:
tfm_rom_report, tfm_ram_report, tfm_footprint
bl2_rom_report, bl2_ram_report, bl2_footprint

Example:
west build -t tfm_rom_report

Signed-off-by: Joakim Andersson <joakim.andersson@nordicsemi.no>
2022-03-09 14:03:52 -05:00
Jaxson Han 3c1f3197e2 cmake: armfvp: Add FVP min version check
After the fix of FVP_BaseR_AEMv8R booting issue, the minimum required
version of FVP will be 11.16.16. Add an FVP minimal required version
check in building time.

When the ARMFVP_MIN_VERSION is set in board cmake file, the version
check will be enabled and print a warning.

Signed-off-by: Jaxson Han <jaxson.han@arm.com>
Change-Id: Ibbade0c328b5e91b8830fb35cba6917f08aabbda
2022-03-08 11:09:13 +01:00
Torsten Rasmussen f96ee77c7c cmake: function to update Zephyr_DIR when loading old Zephyr packages
Fixes: #43094

This commit introduces a function which updates Zephyr_DIR to point to
the directory of the Zephyr package being loaded.

For Zephyr 3.0 and earlier, the Zephyr_DIR might in some cases be
`Zephyr_DIR-NOTFOUND` or pointing to the Zephyr package including the
boilerplate code instead of the Zephyr package of the included
boilerplate code.

This code ensures that when a package is loaded then Zephyr_DIR will
point correctly.
This ensures that when Zephyr releases <=3.0 is loaded, then Zephyr_DIR
will point correctly, see more in #43094.

Old style Zephyr package will in some cases load boilerplate.cmake
directly so to ensure proper behavior, restrict boilerplate uses of
`find_package(Zephyr)` to not use default search path, but allow only
the current Zephyr.

Of the same reason, only print warning if Zephyr_DIR is not defined as
this indicates old style inclusion.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2022-03-07 16:35:54 +01:00
Torsten Rasmussen 491aea49a1 cmake: move ZEPHYR_TOOLCHAIN_VARIANT export to common settings
Fixes: #43378

Move the exporting of ZEPHYR_TOOLCHAIN_VARIANT from the custom target to
the COMMON_KCONFIG_ENV_SETTINGS variable.
This ensures that the setting is exported both when running the initial
kconfiglib parsing but also on later menuconfig / guiconfig invocations.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2022-03-04 09:07:43 -06:00
Fabio Baltieri 98dea7e0bd cmake: extensions: fix a STRUCT_SECTION_ITERABLE comment reference
The STRUCT_SECTION_ITERABLE have been renamed to drop the Z_ prefix,
this drops the last reference in the cmake comments.

Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
2022-02-28 12:19:15 +01:00
Sebastian Bøe ac65420121 cmake: Don't translate from relative to absolute include paths
Don't translate from relative to absolute include paths.

It is lost to history why this was necessary and it is causing
problems with generator expressions so we remove the logic.

Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
2022-02-28 11:08:48 +01:00
Torsten Rasmussen 8b199b0fbb cmake: test CMake and issue error if using 3.22.1 / 3.22.2 from PyPI
Fixes: #43099

The CMake 3.22.1 / 3.22.2 PyPI version suffers a bug in the
`cmake_path(... PARENT_PATH)` implementation.

Therefore, when CMake version 3.22.1 / 3.22.2 is detected, test if the
CMake version is suffering from the bug, and in case the bug is present,
fail with an error regarding the issue.

The reason for failing, and not implementing work arounds is that Zephyr
already uses `cmake_path()` at two locations, and we cannot prevent
contributors from adding code which uses this function.

Secondly, Zephyr modules may also use `cmake_path()`, and thus be
affected by said bug.
It is impractical to implement work arounds at all possible locations
for something that is a CMake bug.

Therefore the safest solution is to test CMake itself, to check if the
version in use suffers said bug, and fail with a proper error message
if an affected CMake version is used.

See more here:
https://gitlab.kitware.com/cmake/cmake/-/issues/23187
https://github.com/scikit-build/cmake-python-distributions/issues/221

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2022-02-25 10:16:25 -08:00
Ederson de Souza 41d05fccd6 cmake: Add xcc-clang toolchain
Instead of setting XCC_USE_CLANG=1, this patch adds xcc-clang toolchain
that is basically xcc using the clang compiler.

Initially, the new toolchain simply includes files from current xcc
toolchain and (re)sets some variables. This should be a more scalable
approach to diverge the toolchains in the future than placing
"if($ENV{XCC_USE_CLANG})" at several places.

It should also help to filter tests that run (or not) exclusively with
the clang variant of XCC on twister.

The XCC_USE_CLANG flag is documented as deprecated, and a message is
emitted during build if still in use. Its new behaviour is to instruct
Zephyr to use `xcc-clang` toolchain.

Signed-off-by: Ederson de Souza <ederson.desouza@intel.com>
2022-02-25 11:17:06 -05:00
Torsten Rasmussen 117008331d cmake: package_helper CMake script
The Zephyr CMake package helper script allows to invoke Zephyr package
modules as they are invoked at configure time, up to the modules given
with `-DMODULES=<modules>`.
This allows to run the configure time part of the Zephyr build system
without generating a complete build system.

This means that for example devicetree module can be invoked for a given
sample and board to generate zephyr.dts identical to what is created
by the build system during a build.

To generate zephyr.dts for hello_world, invoke the script as:
$ cmake -DBOARD=<board> -B build -S samples/hello_world \
$       -DMODULES=dts -P <ZEPHYR_BASE>/cmake/package_helper.cmake

Other modules, for example 'kconfig' and 'zephyr_modules' can also be
invoked this way.

This will allow other tools, such as twister, to executed only a
subset of the build system like dts in order to do filtering before
determine if a complete build should be invoked.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2022-02-23 11:34:22 -08:00
Torsten Rasmussen 31e90f1bc5 cmake: support sub-component loading in zephyr_default module
This commit allows to load only subcomponents of the default Zephyr
CMake module, zephyr_default.cmake.

This allows other tools to execute Zephyr CMake build system up to a
specific module and the stop further processing.

This commit is an enabler for future support in twister to process only
devicetree or kconfig, to allow test / sample filtering before
generating a complete build system.

Sub-components can be loaded as:
> find_package(Zephyr COMPONENTS zephyr_default:<sub-component>)

for example:
> find_package(Zephyr COMPONENTS zephyr_default:dts)

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2022-02-23 11:34:22 -08:00
Torsten Rasmussen 604f705fda cmake: doc: created a doc.cmake CMake module in Zephyr CMake modules dir
Creating a doc.cmake to the new Zephyr CMake modules dir.

This removes the need for `set(NO_BOILERPLATE TRUE)` before loading the
Zephyr CMake package.

It also removes the need within the doc/CMakeLists.txt file to manually
include individual parts of the Zephyr CMake files as this is now
controlled through a single Zephyr CMake doc module.

This aligns the way a Zephyr package is sourced with other places.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2022-02-22 10:02:39 -08:00
Torsten Rasmussen e4ccde3774 cmake: moved unittest.cmake to Zephyr CMake modules dir
Move the unittest.cmake to the new Zephyr CMake modules dir.

This allows us to have a single Zephyr CMake package and load unittest
module as: 'find_package(Zephyr COMPONENTS unittest)'

This unifies the way Zephyr package is sourced and removes the need for
a dedicated ZephyrUnittest package.

Deprecate the use of: 'find_package(ZephyrUnittest)'

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2022-02-22 10:02:39 -08:00
Torsten Rasmussen 61453e4a58 cmake: Zephyr CMake package and CMake modules
Create a cmake/modules folder containing all Zephyr CMake modules.
All Zephyr cmake files that are included from boilerplate are now
converted into CMake modules which can be individually loaded.

The Zephyr CMake package is updated to support loading of individual
CMake modules using the COMPONENTS argument to `find_package(Zephyr)`.
If the COMPONENTS argument is not specified, the default Zephyr build
system will load.
If COMPONENTS is specified then, only those components and the
dependencies will be loaded.

If a Zephyr CMake module depends on another CMake module which has not
been loaded, it will automatically be loaded.

This allows us to modularize and reuse individual parts of the Zephyr
CMake build system in a more flexible way in future.

Such usage could be:
- Higher livel multi image build system
- Invocation of individual components, for example dts processing by
  twister without loading all build code
- Doc build
- Unittesting

With this new CMake package and CMake module scheme then direct
sourcing of boilerplate.cmake has been deprecated.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2022-02-22 10:02:39 -08:00
Torsten Rasmussen 96b3e4d0c4 cmake: create a root.cmake CMake module
The root.cmake CMake module remove boilerplate code and place
it inside a dedicated root.cmake CMake module.

This is part of a general CMake overhaul to allow better modularization
and reuse of the Zephyr build system.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2022-02-22 10:02:39 -08:00
Torsten Rasmussen bdb99a330f cmake: create a kernel.cmake CMake module
The kernel.cmake CMake module remove boilerplate code and place
it inside a dedicated kernel.cmake CMake module.

This is part of a general CMake overhaul to allow better modularization
and reuse of the Zephyr build system.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2022-02-22 10:02:39 -08:00
Torsten Rasmussen 9bb162d1d5 cmake: create a configuration_files.cmake CMake module
The configuration_files.cmake CMake module remove boilerplate code and
place it inside a dedicated configuration_files.cmake CMake module.

This is part of a general CMake overhaul to allow better modularization
and reuse of the Zephyr build system.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2022-02-22 10:02:39 -08:00
Torsten Rasmussen d2b11174f3 cmake: create a user_cache.cmake CMake module
The user_cache.cmake CMake module remove boilerplate code and place it
inside a dedicated user_cache.cmake CMake module.

The user cache functions has been moved to the new Zephyr CMake module.

This is part of a general CMake overhaul to allow better modularization
and reuse of the Zephyr build system.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2022-02-22 10:02:39 -08:00
Torsten Rasmussen 5504096560 cmake: boards and shields cmake files repurposed
The boards.cmake and shields.cmake has been repurposed to do board and
shield validation so that such validation code can be re-factored out
of boilerplate itself.

The boards.cmake and shields.cmake will both perform validation and
printing errors when validation fails.

Also it will specify the boards and shields build targets.

This ensures that validation code, message printing and target
specification for boards and shields are located logically together.

This is part of a general CMake overhaul to allow better modularization
and reuse of the Zephyr build system.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2022-02-22 10:02:39 -08:00
Torsten Rasmussen de34b67c45 cmake: move CMAKE_<lang>_COMPILER_FORCED into toolchain code.
To prepare for more modular approach move the compiler forced out of
boilerplate and into the specific toolchain cmake code (generic/target).

Code is added to both generic and target toolchain modules to allow
future use of one module without requiring a load of the other module.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2022-02-22 10:02:39 -08:00
Torsten Rasmussen 254e35d61d cmake: create an arch.cmake module
The arch.cmake CMake module remove boilerplate code and place it inside
a dedicated arch.cmake CMake module.

This is part of a general CMake overhaul to allow better modularization
and reuse of the Zephyr build system.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2022-02-22 10:02:39 -08:00
Torsten Rasmussen 7f6bb02287 cmake: create a soc.cmake module
The soc.cmake CMake module remove boilerplate code and place it inside
a dedicated soc.cmake CMake module.

This is part of a general CMake overhaul to allow better modularization
and reuse of the Zephyr build system.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2022-02-22 10:02:39 -08:00
Torsten Rasmussen 0a9a3c0a79 cmake: default value for KCONFIG_BINARY_DIR moved to zephyr_modules
This is a cleanup commit moves the default setting of KCONFIG_BINARY_DIR
from boilerplate.cmake to zephyr_modules.cmake to prepare for better
re-usability.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2022-02-22 10:02:39 -08:00
Torsten Rasmussen a5d0b2f734 cmake: Move default value for AUTOCONF_H to kconfig.cmake
This is a cleanup commit moves the setting of AUTOCONF_H from
boilerplate.cmake to kconfig.cmake for better re-usability.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2022-02-22 10:02:39 -08:00
Ederson de Souza 780bc430e3 compiler/xcc: Remove -Werror flag unknown to XCC
XCC (based on GCC 4.2) doesn't recognize -Wvla (for variable-length
array), so remove it from "warning_error_misra_sane" property.

Signed-off-by: Ederson de Souza <ederson.desouza@intel.com>
2022-02-21 22:17:27 -05:00
Carlo Caione d3203dc70d code_relocation: Add NOCOPY feature
* Use case of interest:

Some platforms are shipping in parallel to the internal FLASH some other
storage / external FLASH (usually a QSPI FLASH) that can be used to
execute (XIP) code from.

The content of this external FLASH can usually be written at flash time
using proper tools (see for example the case of the external FLASH on
the nRF5340DK that can be written at flash time using nrfjprog).

The external FLASH is a nice addition that is extremely useful when a
large application code doesn't entirely fit on the internal FLASH so
that we could want to move part of it in the auxiliary FLASH to XIP the
code from there.

* The problem:

Right now Zephyr doesn't have a formal and generic way to move at build
time part of the code to a different memory region.

* The current status:

Zephyr is indeed shipping a code_relocation feature but that doesn't
entirely match our needs.

When XIP is enabled, the code_relocation feature is used in Zephyr to
move the selected code (that is to copy text section, to initialize data
and zero bss) from FLASH to SRAM at run time and execute code from SRAM.

The relocation is done by a generated snippet of code that is
memcpy()-ing the right content to the destination region also using some
build-time generated portions of linker script to retrieve start and
destination addresses and regions.

* This patch:

This patch is leveraging the code_relocation code and adding a NOCOPY
feature. This feature is using the code_relocation feature to
dynamically build the linker script snippets but entirely skipping the
run-time code relocation so that the code can be XIP-ed from the
destination region.

* Example:

Let's say that we have a big file called `huge_file.c` that we want to
XIP from the external FLASH that is mapped in an EXTFLASH region.

In this case we should enable `CONFIG_XIP` and
`CONFIG_CODE_DATA_RELOCATION` and instruct cmake as follows:

  zephyr_code_relocate(src/huge_file.c EXTFLASH_TEXT NOCOPY)
  zephyr_code_relocate(src/huge_file.c SRAM_DATA)

this means that:

- The .text section of the `huge_file.c` must reside in the EXTFLASH
  memory region and we do not need to copy the section there because we
  are going to XIP it (and we assume that the file is going to be placed
  in the external FLASH at flash time).
- The .data section of the `huge_file.c` must still reside in the SRAM
  memory region.

* TODOs:

It's desirable to have the possibility to relocate libraries and
pre-build files instead of source code files.

Signed-off-by: Carlo Caione <ccaione@baylibre.com>
2022-02-21 22:09:46 -05:00
Carlo Caione 34339e2560 cmake: linker: Automatically generates memory regions
As already done for the regular linker script, dinamically generates the
memory regions with the 'zephyr,memory-region' compatible also when
using the cmake linker generator.

Signed-off-by: Carlo Caione <ccaione@baylibre.com>
2022-02-21 22:02:04 -05:00
Carlo Caione 3c0c03b9eb cmake: dts: Add dt_comp_path() cmake function
Add a new cmake extension function:

  dt_comp_path(<var> COMPATIBLE <compatible> [INDEX <idx>])

to get a list of paths for the nodes with the given <compatible>. This
is useful when we have to cycle through several nodes with the same
compatible.

Signed-off-by: Carlo Caione <ccaione@baylibre.com>
2022-02-21 22:02:04 -05:00
Nicolas Pitre 678b76e4b0 kernel/init.c: allow for memset/memcpy alternatives during early boot
Zeroing the BSS and copying data to RAM with regular memset/memcpy may
cause problems when those functions are assuming a fully initialized
system for their optimizations to work e.g. some instructions require
an active MMU, but turning the MMU on needs the .bss section to be
cleared first, etc.

Commit c5b898743a ("aarch64: Fix alignment fault on z_bss_zero()")
provides a detailed explanation of such a case.

Replacing z_bss_zero() with an architecture specific one is problematic
as the former may see new sections added to it that would be missed by
the later. The same reasoning goes for z_data_copy().

Let's make maintenance much easier by providing weak versions of
memset/memcpy that can be overridden by architecture-specific safe
versions when needed.

Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
2022-02-21 21:00:12 -05:00
Torsten Rasmussen ea082ac2c9 cmake: only write devicetree files when there are changes.
As part of #40167 is was discovered that devicetree headers are always
generated when CMake re-runs.

This causes all source files that directly or indirectly through
included headers to recompile when CMake re-runs, even if there are no
changes to devicetree.

This commits introduces `zephyr_file_copy(...)` similar to
`file(COPY_FILE ...)` from CMake 3.21.
However, as CMake 3.20 is supported by Zephyr we need a zephyr variant
of this function to allow usage with CMake 3.20.

This ensures that only when there are changes to devicetree headers,
then source files will recompile.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2022-02-11 15:47:09 +01:00
Torsten Rasmussen 91709778a4 cmake: version.h generation performed at build time
Fixes: #39503
Fixes: #40167

This commit moves `BUILD_VERSION` CMake variable from a compile
definition to be a define inside version.h.

Besides the benefit of having related settings grouped in a common
header, it also means that an updated `BUILD_VERSION` value does not
need to trigger re-compilation of all source files.

When using compile definitions, CMake cannot tell whether a given source
files uses the definition or not, and hence all sources must be
recompiled to be sure they are up-to-date.

Placing `BUILD_VERSION` in version.h, the source dependencies ensures
that only source files including `version.h` gets recompiled.

As part of this, version.h generation is moved so that it is now done
at build time.
This means that re-generation of version.h is no longer depending on a
CMake re-run but can have it's own dependency in `.git/index` when git
described is used to obtain `BUILD_VERSION` information.

Generation of logging dictionary database has been updated to support
BUILD_VERSION from header file instead of CMake configure time variable.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2022-02-08 07:50:24 -05:00