1 files changed, 74 insertions, 0 deletions
diff --git a/scripts/cmake/cmsis-dsp.cmake b/scripts/cmake/cmsis-dsp.cmake
new file mode 100644
index 0000000..cb0243b
--- /dev/null
+++ b/scripts/cmake/cmsis-dsp.cmake
@@ -0,0 +1,74 @@
+#----------------------------------------------------------------------------
+#  Copyright (c) 2021 Arm Limited. All rights reserved.
+#  SPDX-License-Identifier: Apache-2.0
+#
+#  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.
+#----------------------------------------------------------------------------
+
+# CMSIS-DSP library CMake helper script.
+
+# 1. We should be cross-compiling (non-native target)
+if (TARGET_PLATFORM STREQUAL native)
+    message(FATAL_ERROR "No CMSIS-DSP support for native target.")
+endif()
+
+# 2. Check if CMSIS sources have been defined
+if (NOT DEFINED CMSIS_SRC_PATH)
+    message(FATAL_ERROR "CMSIS path should be defined for CMSIS-DSP library to be built")
+endif()
+
+# 3. Form a list of all the sources we need in CSMS-DSP library
+set(CMSIS_DSP_PATH_SUFFIX   "CMSIS/DSP")
+set(CMSIS_CORE_PATH_SUFFIX  "CMSIS/Core")
+set(CMSIS_DSP_SRC_DIR       "${CMSIS_SRC_PATH}/${CMSIS_DSP_PATH_SUFFIX}/Source")
+set(CMSIS_DSP_INC_DIR       "${CMSIS_SRC_PATH}/${CMSIS_DSP_PATH_SUFFIX}/Include")
+set(CMSIS_DSP_PRI_INC_DIR   "${CMSIS_SRC_PATH}/${CMSIS_DSP_PATH_SUFFIX}/PrivateInclude")
+set(CMSIS_CORE_INC_DIR      "${CMSIS_SRC_PATH}/${CMSIS_CORE_PATH_SUFFIX}/Include")
+
+file(GLOB_RECURSE
+    CMSIS_DSP_SRC
+    "${CMSIS_DSP_SRC_DIR}/arm_*.c")
+
+# 4. Create static library
+set(CMSIS_DSP_TARGET        cmsis-dsp)
+
+add_library(${CMSIS_DSP_TARGET} STATIC ${CMSIS_DSP_SRC})
+
+target_include_directories(${CMSIS_DSP_TARGET} PUBLIC
+                           ${CMSIS_DSP_INC_DIR}
+                           ${CMSIS_CORE_INC_DIR})
+target_include_directories(${CMSIS_DSP_TARGET} PRIVATE
+                           ${CMSIS_DSP_PRI_INC_DIR})
+
+# 5. Add any custom/conditional flags for compilation or linkage
+if (${CMAKE_SYSTEM_PROCESSOR} STREQUAL cortex-m55)
+    target_compile_definitions(${CMSIS_DSP_TARGET} PUBLIC
+        ARM_MATH_MVEI
+        ARM_MATH_DSP
+        ARM_MATH_LOOPUNROLL)
+elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL cortex-m33)
+    # Placeholder, if building with Cortex-M33
+endif()
+
+
+# 6. Provide the library path for the top level CMake to use:
+set(CMSIS_DSP_LIB   "${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/lib${CMSIS_DSP_TARGET}.a")
+message(STATUS "CMSIS_DSP_LIB set to be generated here: ${CMSIS_DSP_LIB}")
+
+message(STATUS "CMAKE_CURRENT_SOURCE_DIR: " ${CMAKE_CURRENT_SOURCE_DIR})
+message(STATUS "*******************************************************")
+message(STATUS "Library                                : " ${CMSIS_DSP_TARGET})
+message(STATUS "Build type                             : " ${CMAKE_BUILD_TYPE})
+message(STATUS "TARGET_PLATFORM                        : " ${TARGET_PLATFORM})
+message(STATUS "CMAKE_SYSTEM_PROCESSOR                 : " ${CMAKE_SYSTEM_PROCESSOR})
+message(STATUS "*******************************************************")