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#
# Copyright (c) 2019-2020 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
#
# 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.
#
cmake_minimum_required(VERSION 3.15.6)
project(core_software VERSION 0.0.1)
#
# Define build options
#
# Setup paths
set(CMSIS_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmsis" CACHE PATH "Path to CMSIS.")
set(CORE_DRIVER_PATH "${CMAKE_CURRENT_SOURCE_DIR}/core_driver" CACHE PATH "Path to core driver.")
set(LINUX_DRIVER_STACK_PATH "${CMAKE_CURRENT_SOURCE_DIR}/../linux_driver_stack" CACHE PATH "Path to Linux driver stack for Arm Ethos-U.")
set(TENSORFLOW_PATH "${CMAKE_CURRENT_SOURCE_DIR}/tensorflow" CACHE PATH "Path to Tensorflow.")
# Select accelerator for tensorflow
set(CORE_SOFTWARE_ACCELERATOR "NPU" CACHE STRING "Set NPU backend for Tensorflow Lite for microcontrollers")
set_property(CACHE CORE_SOFTWARE_ACCELERATOR PROPERTY STRINGS CPU CMSIS-NN NPU)
# Define build options
set(CORE_SOFTWARE_RTOS "None" CACHE STRING "Select RTOS to include. (None, MbedOS, FreeRTOS, Zephyr)")
string(TOLOWER ${CORE_SOFTWARE_RTOS} CORE_SOFTWARE_RTOS_LOWER)
# Set trustzone options
set(TRUSTZONE_BUILD OFF CACHE BOOL "Enable TrustZone build")
if (TRUSTZONE_BUILD)
set(TRUSTZONE_SIDE "secure" CACHE STRING "Select secure or nonsecure")
set_property(CACHE TRUSTZONE_SIDE PROPERTY STRINGS secure nonsecure)
set(TRUSTZONE_PARTITION_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}" CACHE
FILEPATH "Path to CMSIS partion header for device")
endif()
#
# Build
#
add_library(ethosu_core INTERFACE)
# Build CMSIS
include(cmsis.cmake)
target_link_libraries(ethosu_core INTERFACE cmsis_core cmsis_device)
# Build core driver
if (CORE_SOFTWARE_ACCELERATOR STREQUAL "NPU")
set(ETHOSU_PMU_INTERACTIVE OFF)
add_subdirectory(${CORE_DRIVER_PATH} core_driver)
target_link_libraries(ethosu_core INTERFACE ethosu_core_driver)
endif()
# Build Tensorflow library
include(tensorflow.cmake)
# Build RTOS
add_subdirectory(rtos)
# Build applications
add_subdirectory(applications)
# Build drivers
add_subdirectory(drivers)
# Merge libraries into static library
target_link_libraries(ethosu_core INTERFACE tflu cmsis_core ethosu_applications ethosu_drivers)
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