Merge pull request #46830 from mansnils:corstone

PiperOrigin-RevId: 357746959 Change-Id: Ia606141bae18c227676634031e2d77dc25d33058
2021-02-16 10:18:13 -08:00 · 2021-02-16 10:18:13 -08:00 · 614fdcc5be
commit 614fdcc5be
parent c87f1e3c06 378be320c4
9 changed files with 480 additions and 3 deletions
--- a/tensorflow/lite/micro/cortex_m_corstone_300/README.md
+++ b/tensorflow/lite/micro/cortex_m_corstone_300/README.md
@ -0,0 +1,47 @@
+ <!-- mdformat off(b/169948621#comment2) -->
+
+# Running a fixed virtual platform based on Corstone-300 software
+
+This target makes use of a fixed virtual platform (FVP) based on Arm Cortex-300
+based software. More info about Arm Corstone-300 software:
+https://developer.arm.com/ip-products/subsystem/corstone/corstone-300. More info
+about FVPs:
+https://developer.arm.com/tools-and-software/simulation-models/fixed-virtual-platforms.
+
+To fullfill the needed requirements it is depending the following projects:
+
+-   Arm Ethos-U Core Platform:
+    https://review.mlplatform.org/admin/repos/ml/ethos-u/ethos-u-core-platform.
+    -   Arm Ethos-U Core Platform provides the linker file as well as UART and
+        retarget functions.
+-   CMSIS: https://github.com/ARM-software/CMSIS_5.
+    -   CMSIS provides startup functionality, e.g. for setting up interrupt
+        handlers and clock speed.
+
+# General build info
+
+This target is based on the cortex_m_generic target and except that for now the
+only supported toolchain is GCC, the same general build info applies:
+tensorflow/lite/micro/cortex_m_generic/README.md.
+
+Required parameters:
+
+-   TARGET: cortex_m_corstone_300
+-   TARGET_ARCH: cortex-mXX (For all options see:
+    tensorflow/lite/micro/tools/make/targets/cortex_m_corstone_300_makefile.inc)
+
+# How to run
+
+Note that Corstone-300 is targetted for Cortex-M55 but it is backwards
+compatible. This means one could potentially run it for example with a
+Cortex-M7. Note that the clock speed would be that of an Cortex-M55. This may
+not matter when running unit tests or for debugging.
+
+Some examples:
+
+```
+make -j -f tensorflow/lite/micro/tools/make/Makefile OPTIMIZED_KERNEL_DIR=cmsis_nn TARGET=cortex_m_corstone_300 TARGET_ARCH=cortex-m55 test_kernel_fully_connected_test
+make -j -f tensorflow/lite/micro/tools/make/Makefile TARGET=cortex_m_corstone_300 TARGET_ARCH=cortex-m55 test_kernel_fully_connected_test
+make -j -f tensorflow/lite/micro/tools/make/Makefile OPTIMIZED_KERNEL_DIR=cmsis_nn TARGET=cortex_m_corstone_300 TARGET_ARCH=cortex-m7+fp test_kernel_fully_connected_test
+make -j -f tensorflow/lite/micro/tools/make/Makefile TARGET=cortex_m_corstone_300 TARGET_ARCH=cortex-m3 test_kernel_fully_connected_test
+```
--- a/tensorflow/lite/micro/cortex_m_corstone_300/system_setup.cc
+++ b/tensorflow/lite/micro/cortex_m_corstone_300/system_setup.cc
@ -0,0 +1,26 @@
+/* Copyright 2021 The TensorFlow Authors. All Rights Reserved.
+
+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.
+==============================================================================*/
+
+#include "tensorflow/lite/micro/system_setup.h"
+
+namespace tflite {
+
+extern "C" {
+void uart_init(void);
+}
+
+void InitializeTarget() { uart_init(); }
+
+}  // namespace tflite
--- a/tensorflow/lite/micro/testing/test_with_arm_corstone_300.sh
+++ b/tensorflow/lite/micro/testing/test_with_arm_corstone_300.sh
@ -0,0 +1,48 @@
+#!/bin/bash -e
+# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
+#
+# 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.
+# ==============================================================================
+#
+#
+# Parameters:
+#  ${1} - path to a binary to test or directory (all *_test will be run).
+#  ${2} - String that is checked for pass/fail.
+#  ${3} - target (e.g. cortex_m_generic.)
+
+set -e
+
+BINARY_TO_TEST=${1}
+PASS_STRING=${2}
+TARGET=${3}
+
+RESULTS_DIRECTORY=/tmp/${TARGET}_logs
+MICRO_LOG_FILENAME=${RESULTS_DIRECTORY}/logs.txt
+mkdir -p ${RESULTS_DIRECTORY}
+
+FVP="FVP_Corstone_SSE-300_Ethos-U55 "
+FVP+="--cpulimit 1 "
+FVP+="-C mps3_board.visualisation.disable-visualisation=1 "
+FVP+="-C mps3_board.telnetterminal0.start_telnet=0 "
+FVP+='-C mps3_board.uart0.out_file="-" '
+FVP+='-C mps3_board.uart0.unbuffered_output=1'
+${FVP} ${BINARY_TO_TEST} | tee ${MICRO_LOG_FILENAME}
+
+if grep -q "$PASS_STRING" ${MICRO_LOG_FILENAME}
+then
+  echo "$BINARY_TO_TEST: PASS"
+  exit 0
+else
+  echo "$BINARY_TO_TEST: FAIL - '$PASS_STRING' not found in logs."
+  exit 1
+fi
--- a/tensorflow/lite/micro/tools/ci_build/test_cortex_m_corstone_300.sh
+++ b/tensorflow/lite/micro/tools/ci_build/test_cortex_m_corstone_300.sh
@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+# Copyright 2020 The TensorFlow Authors. All Rights Reserved.
+#
+# 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.
+# ==============================================================================
+#
+# Tests Arm Cortex-M55 microprocessor code with CMSIS-NN optimizied kernels using FVP based on Arm Corstone-300 software.
+
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+ROOT_DIR=${SCRIPT_DIR}/../../../../..
+cd "${ROOT_DIR}"
+
+source tensorflow/lite/micro/tools/ci_build/helper_functions.sh
+
+TARGET=cortex_m_corstone_300
+TARGET_ARCH=cortex-m55
+OPTIMIZED_KERNEL_DIR=cmsis_nn
+
+# TODO(b/143715361): downloading first to allow for parallel builds.
+readable_run make -f tensorflow/lite/micro/tools/make/Makefile OPTIMIZED_KERNEL_DIR=${OPTIMIZED_KERNEL_DIR} TARGET=${TARGET} TARGET_ARCH=${TARGET_ARCH} third_party_downloads
+
+# Avoid running tests in parallel.
+readable_run make -f tensorflow/lite/micro/tools/make/Makefile clean
+readable_run make -j -f tensorflow/lite/micro/tools/make/Makefile OPTIMIZED_KERNEL_DIR=${OPTIMIZED_KERNEL_DIR} TARGET=${TARGET} TARGET_ARCH=${TARGET_ARCH} build
+readable_run make -f tensorflow/lite/micro/tools/make/Makefile OPTIMIZED_KERNEL_DIR=${OPTIMIZED_KERNEL_DIR} TARGET=${TARGET} TARGET_ARCH=${TARGET_ARCH} test
--- a/tensorflow/lite/micro/tools/make/corstone_300_download.sh
+++ b/tensorflow/lite/micro/tools/make/corstone_300_download.sh
@ -0,0 +1,70 @@
+#!/bin/bash
+# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
+#
+# 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.
+# ==============================================================================
+#
+# Called with following arguments:
+# 1 - Path to the downloads folder which is typically
+#     tensorflow/lite/micro/tools/make/downloads
+#
+# This script is called from the Makefile and uses the following convention to
+# enable determination of sucess/failure:
+#
+#   - If the script is successful, the only output on stdout should be SUCCESS.
+#     The makefile checks for this particular string.
+#
+#   - Any string on stdout that is not SUCCESS will be shown in the makefile as
+#     the cause for the script to have failed.
+#
+#   - Any other informational prints should be on stderr.
+
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+ROOT_DIR=${SCRIPT_DIR}/../../../../..
+cd "${ROOT_DIR}"
+
+source tensorflow/lite/micro/tools/make/bash_helpers.sh
+
+DOWNLOADS_DIR=${1}
+if [ ! -d ${DOWNLOADS_DIR} ]; then
+  echo "The top-level downloads directory: ${DOWNLOADS_DIR} does not exist."
+  exit 1
+fi
+
+DOWNLOADED_CORSTONE_PATH=${DOWNLOADS_DIR}/corstone300
+
+if [ -d ${DOWNLOADED_CORSTONE_PATH} ]; then
+  echo >&2 "${DOWNLOADED_CORSTONE_PATH} already exists, skipping the download."
+else
+  UNAME_S=`uname -s`
+  if [ ${UNAME_S} == Linux ]; then
+    CORSTONE_URL=https://developer.arm.com/-/media/Arm%20Developer%20Community/Downloads/OSS/FVP/Corstone-300/FVP_Corstone_SSE-300_Ethos-U55_11.12_57.tgz
+    EXPECTED_MD5=08cc89b02a41917c2224f390f3ac0b47
+  else
+    echo "OS type ${UNAME_S} not supported."
+    exit 1
+  fi
+
+  TEMPFILE=$(mktemp -d)/temp_file
+  wget ${CORSTONE_URL} -O ${TEMPFILE} >&2
+  check_md5 ${TEMPFILE} ${EXPECTED_MD5}
+
+  TEMPDIR=$(mktemp -d)
+  tar -C ${TEMPDIR} -xvzf ${TEMPFILE} >&2
+  mkdir ${DOWNLOADED_CORSTONE_PATH}
+  ${TEMPDIR}/FVP_Corstone_SSE-300_Ethos-U55.sh --i-agree-to-the-contained-eula --no-interactive -d ${DOWNLOADED_CORSTONE_PATH} >&2
+fi
+
+echo "SUCCESS"
--- a/tensorflow/lite/micro/tools/make/ethos_u_core_platform_download.sh
+++ b/tensorflow/lite/micro/tools/make/ethos_u_core_platform_download.sh
@ -0,0 +1,80 @@
+#!/bin/bash
+# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ==============================================================================
+#
+# Called with following arguments:
+# 1 - Path to the downloads folder which is typically
+#     tensorflow/lite/micro/tools/make/downloads
+#
+# This script is called from the Makefile and uses the following convention to
+# enable determination of sucess/failure:
+#
+#   - If the script is successful, the only output on stdout should be SUCCESS.
+#     The makefile checks for this particular string.
+#
+#   - Any string on stdout that is not SUCCESS will be shown in the makefile as
+#     the cause for the script to have failed.
+#
+#   - Any other informational prints should be on stderr.
+
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+ROOT_DIR=${SCRIPT_DIR}/../../../../..
+cd "${ROOT_DIR}"
+
+source tensorflow/lite/micro/tools/make/bash_helpers.sh
+
+DOWNLOADS_DIR=${1}
+if [ ! -d ${DOWNLOADS_DIR} ]; then
+  echo "The top-level downloads directory: ${DOWNLOADS_DIR} does not exist."
+  exit 1
+fi
+
+DOWNLOADED_ETHOS_U_CORE_PLATFORM_PATH=${DOWNLOADS_DIR}/ethos_u_core_platform
+
+if [ -d ${DOWNLOADED_ETHOS_U_CORE_PLATFORM_PATH} ]; then
+  echo >&2 "${DOWNLOADED_ETHOS_U_CORE_PLATFORM_PATH} already exists, skipping the download."
+else
+  UNAME_S=`uname -s`
+  if [ ${UNAME_S} == Linux ]; then
+    ETHOS_U_CORE_PLATFORM_URL=https://git.mlplatform.org/ml/ethos-u/ethos-u-core-platform.git/snapshot/ethos-u-core-platform-6663630bb3feea222fd38278a962297c08d0b320.tar.gz
+    EXPECTED_MD5=11683ce5cbf4e4d1003ca93a85ad0b08
+  else
+    echo "OS type ${UNAME_S} not supported."
+    exit 1
+  fi
+
+  TEMPFILE=$(mktemp -d)/temp_file
+  wget ${ETHOS_U_CORE_PLATFORM_URL} -O ${TEMPFILE} >&2
+  check_md5 ${TEMPFILE} ${EXPECTED_MD5}
+
+  mkdir ${DOWNLOADED_ETHOS_U_CORE_PLATFORM_PATH}
+  tar xzf ${TEMPFILE} --strip-components=1 -C ${DOWNLOADED_ETHOS_U_CORE_PLATFORM_PATH} >&2
+
+  # Run C preprocessor on linker file to get rid of ifdefs and make sure compiler is downloaded first.
+  COMPILER=${DOWNLOADS_DIR}/gcc_embedded/bin/arm-none-eabi-gcc
+  if [ ! -f ${COMPILER} ]; then
+      RETURN_VALUE=`./tensorflow/lite/micro/tools/make/arm_gcc_download.sh ${DOWNLOADS_DIR}`
+      if [ "SUCCESS" != "${RETURN_VALUE}" ]; then
+        echo "The script ./tensorflow/lite/micro/tools/make/arm_gcc_download.sh failed."
+        exit 1
+      fi
+  fi
+  LINKER_PATH=${DOWNLOADED_ETHOS_U_CORE_PLATFORM_PATH}/targets/corstone-300
+  ${COMPILER} -E -x c -P -o ${LINKER_PATH}/platform_parsed.ld ${LINKER_PATH}/platform.ld
+fi
+
+echo "SUCCESS"
--- a/tensorflow/lite/micro/tools/make/ext_libs/cmsis_download.sh
+++ b/tensorflow/lite/micro/tools/make/ext_libs/cmsis_download.sh
@ -49,9 +49,9 @@ if [ -d ${DOWNLOADED_CMSIS_PATH} ]; then
  echo >&2 "${DOWNLOADED_CMSIS_PATH} already exists, skipping the download."
 else

-  ZIP_PREFIX="01f5b32badf7b78c85a24a7149b56400fa6a2999"
+  ZIP_PREFIX="71627bc91534ed9eec2361c0ef6442cd057653e0"
  CMSIS_URL="http://github.com/ARM-software/CMSIS_5/archive/${ZIP_PREFIX}.zip"
-  CMSIS_MD5="823916c6f1749c65fd0bfdeec20b30ed"
+  CMSIS_MD5="207c49970758c663e2ce1cc0245972a9"

  # wget is much faster than git clone of the entire repo. So we wget a specific
  # version and can then apply a patch, as needed.
--- a/tensorflow/lite/micro/tools/make/ext_libs/ethos_u.inc
+++ b/tensorflow/lite/micro/tools/make/ext_libs/ethos_u.inc
@ -13,7 +13,7 @@ endif
 # Unless an external path is provided we force a download during the first phase of make so
 # that the files exist prior to the call to recursive_find below. add_third_party_download
 # prevents the use of wildcards and recursive_find in selecting which files to add to THIRD_PARTY_SRCS.
-ETHOSU_DEFAULT_DOWNLOAD_DRIVER_PATH := $(MAKEFILE_DIR)/downloads/ethosu
+ETHOSU_DEFAULT_DOWNLOAD_DRIVER_PATH := $(MAKEFILE_DIR)/downloads/ethos_u_core_driver
 ETHOSU_DRIVER_PATH := $(ETHOSU_DEFAULT_DOWNLOAD_DRIVER_PATH)
 ifeq ($(ETHOSU_DRIVER_PATH), $(ETHOSU_DEFAULT_DOWNLOAD_DRIVER_PATH))
  $(call $(or $(shell $(DOWNLOAD_SCRIPT) $(ETHOSU_URL) $(ETHOSU_MD5) $(ETHOSU_DRIVER_PATH) >&2 && echo SUCCESS), $(error $(DOWNLOAD_SCRIPT) failed)))
--- a/tensorflow/lite/micro/tools/make/targets/cortex_m_corstone_300_makefile.inc
+++ b/tensorflow/lite/micro/tools/make/targets/cortex_m_corstone_300_makefile.inc
@ -0,0 +1,169 @@
+# ARM Cortex M makefile targeted for a FVP based on Arm Corstone-300 software.
+# For more info see: tensorflow/lite/micro/cortex_m_corstone_300/README.md
+
+export PATH := $(MAKEFILE_DIR)/downloads/corstone300/models/Linux64_GCC-6.4:$(PATH)
+DOWNLOAD_RESULT := $(shell $(MAKEFILE_DIR)/corstone_300_download.sh ${MAKEFILE_DIR}/downloads)
+ifneq ($(DOWNLOAD_RESULT), SUCCESS)
+  $(error Something went wrong with the Arm Corstone-300 software download: $(DOWNLOAD_RESULT))
+endif
+
+ETHOS_U_CORE_PLATFORM := ${PWD}/$(MAKEFILE_DIR)/downloads/ethos_u_core_platform/targets/corstone-300
+DOWNLOAD_RESULT := $(shell $(MAKEFILE_DIR)/ethos_u_core_platform_download.sh ${MAKEFILE_DIR}/downloads)
+ifneq ($(DOWNLOAD_RESULT), SUCCESS)
+  $(error Something went wrong with the Ethos-U Core Platform software download: $(DOWNLOAD_RESULT))
+endif
+
+# This target has dependencies to CMSIS-Device so just in case running without OPTIMIZED_KERNEL_DIR=cmsis_nn.
+CMSIS_DEFAULT_DOWNLOAD_PATH := $(MAKEFILE_DIR)/downloads/cmsis
+CMSIS_PATH := $(CMSIS_DEFAULT_DOWNLOAD_PATH)
+ifeq ($(CMSIS_PATH), $(CMSIS_DEFAULT_DOWNLOAD_PATH))
+  DOWNLOAD_RESULT := $(shell $(MAKEFILE_DIR)/ext_libs/cmsis_download.sh ${MAKEFILE_DIR}/downloads)
+  ifneq ($(DOWNLOAD_RESULT), SUCCESS)
+    $(error Something went wrong with the CMSIS download: $(DOWNLOAD_RESULT))
+  endif
+endif
+
+FLOAT := soft
+GCC_TARGET_ARCH := $(TARGET_ARCH)
+
+ifeq ($(TARGET_ARCH), cortex-m0)
+  CORE=M0
+
+else ifeq ($(TARGET_ARCH), cortex-m3)
+  CORE=M3
+
+else ifeq ($(TARGET_ARCH), cortex-m33)
+  CORE=M33
+  FLOAT=hard
+  CMSIS_ARM_FEATURES := _DSP_DP
+
+else ifeq ($(TARGET_ARCH), cortex-m33+nodsp)
+  CORE=M33
+
+else ifeq ($(TARGET_ARCH), cortex-m4)
+  CORE=M4
+  GCC_TARGET_ARCH := cortex-m4+nofp
+
+else ifeq ($(TARGET_ARCH), cortex-m4+fp)
+  CORE=M4
+  FLOAT=hard
+  GCC_TARGET_ARCH := cortex-m4
+  CMSIS_ARM_FEATURES := _FP
+
+else ifeq ($(TARGET_ARCH), cortex-m55)
+  CORE=M55
+  FLOAT=hard
+
+else ifeq ($(TARGET_ARCH), cortex-m55+nodsp+nofp)
+  CORE=M55
+
+else ifeq ($(TARGET_ARCH), cortex-m55+nofp)
+  CORE=M55
+
+else ifeq ($(TARGET_ARCH), cortex-m7)
+  CORE=M7
+  GCC_TARGET_ARCH := cortex-m7+nofp
+
+else ifeq ($(TARGET_ARCH), cortex-m7+fp)
+  CORE=M7
+  FLOAT=hard
+  GCC_TARGET_ARCH := cortex-m7
+  CMSIS_ARM_FEATURES := _DP
+
+else
+  $(error "TARGET_ARCH=$(TARGET_ARCH) is not supported")
+endif
+
+ifneq ($(filter cortex-m55%,$(TARGET_ARCH)),)
+  # soft-abi=soft disables MVE - use softfp instead for M55.
+  ifeq ($(FLOAT),soft)
+    FLOAT=softfp
+  endif
+endif
+
+ifeq ($(TOOLCHAIN), gcc)
+  export PATH := $(MAKEFILE_DIR)/downloads/gcc_embedded/bin/:$(PATH)
+  DOWNLOAD_RESULT := $(shell $(MAKEFILE_DIR)/arm_gcc_download.sh ${MAKEFILE_DIR}/downloads)
+  ifneq ($(DOWNLOAD_RESULT), SUCCESS)
+    $(error Something went wrong with the GCC download: $(DOWNLOAD_RESULT))
+  endif
+  TARGET_TOOLCHAIN_PREFIX := arm-none-eabi-
+
+  FLAGS_GCC = -mcpu=$(GCC_TARGET_ARCH) -mfpu=auto
+  CXXFLAGS += $(FLAGS_GCC)
+  CCFLAGS += $(FLAGS_GCC)
+
+  LDFLAGS += \
+    --specs=nosys.specs \
+    -T $(ETHOS_U_CORE_PLATFORM)/platform_parsed.ld \
+    -Wl,-Map=${TENSORFLOW_ROOT}$(MAKEFILE_DIR)/gen/$(TARGET).map,--cref \
+    -Wl,--gc-sections \
+    --entry Reset_Handler
+
+else
+  $(error "TOOLCHAIN=$(TOOLCHAIN) is not supported.")
+endif
+
+# TODO: fix warnings.
+OMIT_ERRORS = \
+  -Wno-implicit-fallthrough \
+  -Wno-strict-aliasing
+
+PLATFORM_FLAGS = \
+  -DTF_LITE_MCU_DEBUG_LOG \
+  -mthumb \
+  -mfloat-abi=$(FLOAT) \
+  -funsigned-char \
+  -mlittle-endian \
+  ${OMIT_ERRORS} \
+  -fomit-frame-pointer \
+  -MD \
+  -DCPU_$(CORE)=1
+
+# Common + C/C++ flags
+CXXFLAGS += $(PLATFORM_FLAGS)
+CCFLAGS += $(PLATFORM_FLAGS)
+
+ARM_CPU := $(subst cortex-m,ARMCM,$(GCC_TARGET_ARCH))
+ARM_CPU := $(subst +nofp,,$(ARM_CPU))
+CXXFLAGS += -D$(ARM_CPU)$(CMSIS_ARM_FEATURES)
+CCFLAGS += -D$(ARM_CPU)$(CMSIS_ARM_FEATURES)
+
+THIRD_PARTY_CC_SRCS += \
+  $(ETHOS_U_CORE_PLATFORM)/retarget.c \
+  $(ETHOS_U_CORE_PLATFORM)/uart.c
+
+CMSIS_DEFAULT_DOWNLOAD_PATH := $(MAKEFILE_DIR)/downloads/cmsis
+CMSIS_PATH := $(CMSIS_DEFAULT_DOWNLOAD_PATH)
+THIRD_PARTY_CC_SRCS += \
+  $(CMSIS_PATH)/Device/ARM/$(ARM_CPU)/Source/system_$(ARM_CPU).c \
+  $(CMSIS_PATH)/Device/ARM/$(ARM_CPU)/Source/startup_$(ARM_CPU).c
+INCLUDES += \
+  -I$(CMSIS_PATH)/Device/ARM/$(ARM_CPU)/Include \
+  -I$(CMSIS_PATH)/CMSIS/Core/Include
+
+# TODO(#47071): Examine why Micro benchmarks fails.
+MICRO_LITE_BENCHMARKS := $(filter-out tensorflow/lite/micro/benchmarks/Makefile.inc, $(MICRO_LITE_BENCHMARKS))
+
+# TODO(#47070): Examine why some tests fail here.
+EXCLUDED_TESTS := \
+  tensorflow/lite/micro/micro_interpreter_test.cc \
+  tensorflow/lite/micro/micro_allocator_test.cc \
+  tensorflow/lite/micro/memory_helpers_test.cc \
+  tensorflow/lite/micro/micro_error_reporter_test.cc \
+  tensorflow/lite/micro/output_handler_test.cc \
+  tensorflow/lite/micro/memory_arena_threshold_test.cc \
+  tensorflow/lite/micro/recording_micro_allocator_test.cc \
+  tensorflow/lite/micro/kernels/circular_buffer_test.cc \
+  tensorflow/lite/micro/kernels/pooling_test.cc
+MICROLITE_TEST_SRCS := $(filter-out $(EXCLUDED_TESTS), $(MICROLITE_TEST_SRCS))
+EXCLUDED_EXAMPLE_TESTS := \
+  tensorflow/lite/micro/examples/magic_wand/Makefile.inc \
+  tensorflow/lite/micro/examples/micro_speech/Makefile.inc \
+  tensorflow/lite/micro/examples/person_detection/Makefile.inc \
+  tensorflow/lite/micro/examples/hello_world/Makefile.inc \
+  tensorflow/lite/micro/examples/network_tester/Makefile.inc \
+  tensorflow/lite/micro/examples/image_recognition_experimental/Makefile.inc
+MICRO_LITE_EXAMPLE_TESTS := $(filter-out $(EXCLUDED_EXAMPLE_TESTS), $(MICRO_LITE_EXAMPLE_TESTS))
+
+TEST_SCRIPT := tensorflow/lite/micro/testing/test_with_arm_corstone_300.sh