[NXP] Initial enablement of NXP Matter over WiFi with Zephyr

config/nxp/README.md

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+# NXP Zephyr build and configuration files
+
+This directory contains build scripts and common configuration files used by
+CHIP NXP Zephyr applications. It is structured as follows:
+
+| File/Folder | Contents                                                                                                                            |
+| ----------- | ----------------------------------------------------------------------------------------------------------------------------------- |
+| chip-gn     | GN project used to build selected CHIP libraries with the _nxp_zephyr_ platform integration layer                                   |
+| chip-module | CMake wrapper for the GN project defined in `chip-gn` directory, and other components that allow one to use CHIP as a Zephyr module |
+| app         | Common and optional Kconfig configuration files that can be used in NXP Zephyr applications                                         |

config/nxp/app/bootloader.conf

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+#
+#    Copyright (c) 2024 Project CHIP Authors
+#
+#    Licensed under the Apache License, Version 2.0 (the "License");
+#    you may not use this file except in compliance with the License.
+#    You may obtain a copy of the License at
+#
+#        http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS,
+#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#    See the License for the specific language governing permissions and
+#    limitations under the License.
+#
+
+# Options to be used for MCUBOOT build are located on this file.
+
+# The default signature key used by MCUBOOT is located on their repository,
+# change this to the appropriate one.
+# NOTE: This option needs to contain a path to the same file used by
+#       MCUBOOT_SIGNATURE_KEY_FILE.
+#CONFIG_BOOT_SIGNATURE_KEY_FILE="root-rsa-2048.pem"
+
+CONFIG_BOOT_MAX_IMG_SECTORS=2048

config/nxp/app/enable-gnu-std.cmake

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+#
+#   Copyright (c) 2024 Project CHIP Authors
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+#
+
+add_library(gnu17 INTERFACE)
+target_compile_options(gnu17
+    INTERFACE
+        $<$<COMPILE_LANGUAGE:CXX>:-std=gnu++17>
+        -D_SYS__PTHREADTYPES_H_)
+target_link_libraries(app PRIVATE gnu17)

config/nxp/app/pre-zephyr.cmake

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+#
+#   Copyright (c) 2024 Project CHIP Authors
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+#
+
+# Automatically find overlays defined at platform level
+# Those are usually used to change FLASH and RAM layouts
+if (EXISTS ${CHIP_ROOT}/src/platform/nxp/zephyr/boards/${BOARD}/${BOARD}.overlay)
+	list(APPEND EXTRA_DTC_OVERLAY_FILE ${CHIP_ROOT}/src/platform/nxp/zephyr/boards/${BOARD}/${BOARD}.overlay)
+endif()

config/nxp/chip-gn/.gn

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+# Copyright (c) 2024 Project CHIP Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import("//build_overrides/build.gni")
+import("//build_overrides/chip.gni")
+
+# The location of the build configuration file.
+buildconfig = "${build_root}/config/BUILDCONFIG.gn"
+
+# CHIP uses angle bracket includes.
+check_system_includes = true
+
+default_args = {
+  target_cpu = "arm"
+  target_os = "zephyr"
+
+  import("${chip_root}/config/nxp/chip-gn/args.gni")
+}

config/nxp/chip-gn/BUILD.gn

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+# Copyright (c) 2024 Project CHIP Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import("//build_overrides/build.gni")
+import("//build_overrides/chip.gni")
+
+import("${chip_root}/build/chip/tests.gni")
+
+assert(current_os == "zephyr")
+
+declare_args() {
+  chip_build_example_providers = false
+}
+
+group("nxp_zephyr") {
+  deps = [ "${chip_root}/src/lib" ]
+
+  if (chip_build_tests) {
+    deps += [ "${chip_root}/src:tests" ]
+  }
+
+  if (chip_build_example_providers) {
+    deps += [ "${chip_root}/examples/providers:device_info_provider" ]
+  }
+}
+
+group("default") {
+  deps = [ ":nxp_zephyr" ]
+}

config/nxp/chip-gn/args.gni

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+# Copyright (c) 2024 Project CHIP Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import("//build_overrides/chip.gni")
+
+import("${chip_root}/src/crypto/crypto.gni")
+
+chip_device_platform = "nxp_zephyr"
+
+chip_build_tests = false
+
+chip_project_config_include = ""
+chip_system_project_config_include = ""
+chip_ble_project_config_include = ""
+
+chip_crypto = "mbedtls"
+chip_external_mbedtls = true
+
+custom_toolchain = "${chip_root}/config/nxp/chip-gn/toolchain:zephyr"
+
+pw_build_PIP_CONSTRAINTS = [ "${chip_root}/scripts/setup/constraints.txt" ]

config/nxp/chip-gn/toolchain/BUILD.gn

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+# Copyright (c) 2024 Project CHIP Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import("//build_overrides/build.gni")
+
+import("${build_root}/toolchain/arm_gcc/arm_toolchain.gni")
+
+declare_args() {
+  zephyr_ar = ""
+  zephyr_cc = ""
+  zephyr_cxx = ""
+}
+
+gcc_toolchain("zephyr") {
+  ar = zephyr_ar
+  cc = zephyr_cc
+  cxx = zephyr_cxx
+
+  toolchain_args = {
+    current_os = "zephyr"
+    is_clang = false
+  }
+}