diff --git a/arch/arm/src/nrf91/CMakeLists.txt b/arch/arm/src/nrf91/CMakeLists.txt
new file mode 100644
index 00000000000..41526879104
--- /dev/null
+++ b/arch/arm/src/nrf91/CMakeLists.txt
@@ -0,0 +1,150 @@
+############################################################################
+# arch/arm/src/nrf91/CMakeLists.txt
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you 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.
+#
+############################################################################
+
+
+set(SRCS
+    nrf91_start.c
+    nrf91_clockconfig.c
+    nrf91_irq.c
+    nrf91_utils.c
+    nrf91_allocateheap.c
+    nrf91_lowputc.c
+    nrf91_gpio.c
+    nrf91_uid.c
+    nrf91_spu.c
+    nrf91_errata.c)
+
+if(CONFIG_NRF91_SYSTIMER_SYSTICK)
+  list(APPEND SRCS nrf91_systick.c)
+endif()
+
+if(CONFIG_NRF91_SYSTIMER_RTC)
+  list(APPEND SRCS nrf91_tickless_rtc.c)
+endif()
+
+if(CONFIG_NRF91_PROGMEM)
+  list(APPEND SRCS nrf91_flash.c)
+endif()
+
+if(NOT CONFIG_ARCH_IDLE_CUSTOM)
+  list(APPEND SRCS nrf91_idle.c)
+endif()
+
+if(CONFIG_NRF91_GPIOTE)
+  list(APPEND SRCS nrf91_gpiote.c)
+endif()
+
+if(CONFIG_NRF91_UART)
+  list(APPEND SRCS nrf91_serial.c)
+endif()
+
+if(CONFIG_NRF91_SPI_MASTER)
+  list(APPEND SRCS nrf91_spi.c)
+endif()
+
+if(CONFIG_NRF91_I2C_MASTER)
+  list(APPEND SRCS nrf91_i2c.c)
+endif()
+
+if(CONFIG_NRF91_TIMER)
+  list(APPEND SRCS nrf91_tim.c)
+
+  if(CONFIG_TIMER)
+    list(APPEND SRCS nrf91_tim_lowerhalf.c)
+  endif()
+endif()
+
+if(CONFIG_NRF91_RTC)
+  list(APPEND SRCS nrf91_rtc.c)
+endif()
+
+if(CONFIG_NRF91_PWM)
+  list(APPEND SRCS nrf91_pwm.c)
+endif()
+
+if(CONFIG_NRF91_SAADC)
+  list(APPEND SRCS nrf91_adc.c)
+endif()
+
+if(CONFIG_PM)
+  list(APPEND SRCS nrf91_pminitialize.c)
+endif()
+
+if(CONFIG_NRF91_MODEM)
+
+set(NRFXLIB_VER "2.3.0")
+set(NRFXLIB_URL "https://github.com/nrfconnect/sdk-nrfxlib/archive")
+
+if(NOT EXISTS ${CMAKE_CURRENT_LIST_DIR}/sdk-nrfxlib)
+  FetchContent_Declare(
+    sdk-nrfxlib
+    DOWNLOAD_NAME "sdk-nrfxlib-v${NRFXLIB_VER}.tar.gz"
+    DOWNLOAD_DIR ${CMAKE_CURRENT_LIST_DIR}
+    URL "${NRFXLIB_URL}/v${NRFXLIB_VER}.tar.gz"
+        SOURCE_DIR
+        ${CMAKE_CURRENT_LIST_DIR}/sdk-nrfxlib
+        BINARY_DIR
+        ${CMAKE_BINARY_DIR}/arch/sdk-nrfxlib
+        CONFIGURE_COMMAND
+        ""
+        BUILD_COMMAND
+        ""
+        INSTALL_COMMAND
+        ""
+        TEST_COMMAND
+        ""
+    DOWNLOAD_NO_PROGRESS true
+    TIMEOUT 30)
+
+  FetchContent_GetProperties(sdk-nrfxlib)
+
+  if(NOT sdk-nrfxlib_POPULATED)
+    FetchContent_Populate(sdk-nrfxlib)
+  endif()
+endif()
+
+set(NRFXLIB_DIR "${NUTTX_CHIP_ABS_DIR}/sdk-nrfxlib")
+
+target_include_directories(arch PRIVATE ${NRFXLIB_DIR}/nrf_modem/include)
+
+list(APPEND SRCS nrf53_modem.c nrf53_modem_os.c nrf53_nrfx_ipc.c)
+
+if(CONFIG_NRF91_MODEM_AT)
+  list(APPEND SRCS nrf91_modem_at.c)
+endif()
+
+if(CONFIG_ARCH_FPU)
+  set(NRFXLIB_LIB_VARIANT hard-float)
+else ()
+  set(NRFXLIB_LIB_VARIANT soft-float)
+endif()
+
+if(CONFIG_NRF91_MODEM_LOG)
+  set(MODEM_LIB_VARIANT libmodem_log.a)
+else()
+  set(MODEM_LIB_VARIANT libmodem_log.a)
+endif()
+
+target_link_libraries(arch
+  ${NRFXLIB_DIR}/nrf_modem/lib/cortex-m33+nodsp/${NRFXLIB_LIB_VARIANT}/${MODEM_LIB_VARIANT})
+
+endif()
+
+target_sources(arch PRIVATE ${SRCS})
diff --git a/boards/arm/nrf91/common/CMakeLists.txt b/boards/arm/nrf91/common/CMakeLists.txt
new file mode 100644
index 00000000000..9f9b95e1c61
--- /dev/null
+++ b/boards/arm/nrf91/common/CMakeLists.txt
@@ -0,0 +1,22 @@
+############################################################################
+# boards/arm/nrf91/common/CMakeLists.txt
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you 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_subdirectory(src)
+target_include_directories(board PRIVATE include)
diff --git a/boards/arm/nrf91/common/src/CMakeLists.txt b/boards/arm/nrf91/common/src/CMakeLists.txt
new file mode 100644
index 00000000000..2c21fb05af7
--- /dev/null
+++ b/boards/arm/nrf91/common/src/CMakeLists.txt
@@ -0,0 +1,37 @@
+############################################################################
+# boards/arm/nrf91/common/src/CMakeLists.txt
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you 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.
+#
+############################################################################
+
+if(CONFIG_ARCH_BOARD_COMMON)
+
+if(CONFIG_NRF91_TIMER)
+  list(APPEND SRCS nrf91_timer.c)
+endif()
+
+if(CONFIG_BOARDCTL_BOOT_IMAGE)
+  list(APPEND SRCS nrf91_boot_image.c)
+endif()
+
+if(CONFIG_NRF91_PROGMEM)
+  list(APPEND SRCS nrf91_progmem.c)
+endif()
+
+target_sources(board PRIVATE ${SRCS})
+
+endif()
diff --git a/boards/arm/nrf91/nrf9160-dk/CMakeLists.txt b/boards/arm/nrf91/nrf9160-dk/CMakeLists.txt
new file mode 100644
index 00000000000..a8c8d85e060
--- /dev/null
+++ b/boards/arm/nrf91/nrf9160-dk/CMakeLists.txt
@@ -0,0 +1,21 @@
+# ##############################################################################
+# boards/arm/nrf91/nrf9160-dk/CMakeLists.txt
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more contributor
+# license agreements.  See the NOTICE file distributed with this work for
+# additional information regarding copyright ownership.  The ASF licenses this
+# file to you 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_subdirectory(src)
diff --git a/boards/arm/nrf91/nrf9160-dk/src/CMakeLists.txt b/boards/arm/nrf91/nrf9160-dk/src/CMakeLists.txt
new file mode 100644
index 00000000000..752ff5e10f1
--- /dev/null
+++ b/boards/arm/nrf91/nrf9160-dk/src/CMakeLists.txt
@@ -0,0 +1,43 @@
+############################################################################
+# boards/arm/nrf91/nrf9160-dk/src/CMakeLists.txt
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you 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.
+#
+############################################################################
+
+set(SRCS nrf91_boot.c nrf91_bringup.c)
+
+if(CONFIG_BOARDCTL)
+  list(APPEND SRCS nrf91_appinit.c)
+endif()
+
+if(CONFIG_ARCH_LEDS)
+  list(APPEND SRCS nrf91_autoleds.c)
+else()
+  list(APPEND SRCS nrf91_userleds.c)
+endif()
+
+if(CONFIG_ARCH_BUTTONS)
+  list(APPEND SRCS nrf91_buttons.c)
+endif()
+
+target_sources(board PRIVATE ${SRCS})
+
+if(CONFIG_ARCH_BOARD_COMMON)
+  set_property(GLOBAL PROPERTY LD_SCRIPT "${NUTTX_COMMON_DIR}/scripts/flash_app.ld")
+else()
+  set_property(GLOBAL PROPERTY LD_SCRIPT "${NUTTX_BOARD_DIR}/scripts/flash_app.ld")
+endif()