Opensource ML embedded evaluation kit
Change-Id: I12e807f19f5cacad7cef82572b6dd48252fd61fd
diff --git a/scripts/make/cortex_m_ethos_eval_makefile.inc b/scripts/make/cortex_m_ethos_eval_makefile.inc
new file mode 100644
index 0000000..dbb460d
--- /dev/null
+++ b/scripts/make/cortex_m_ethos_eval_makefile.inc
@@ -0,0 +1,153 @@
+# 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.
+
+# Generic Makefile target for ARM Cortex M builds.
+# For more info see: tensorflow/lite/micro/cortex_m_generic/README.md
+ifeq ($(TARGET),$(filter $(TARGET), cortex_m_ethos_eval))
+ FLOAT := soft
+ GCC_TARGET_ARCH := $(TARGET_ARCH)
+
+ ifeq ($(TARGET_ARCH), cortex-m0)
+ CORE=M0
+ ARM_LDFLAGS := -Wl,--cpu=Cortex-M0
+
+ else ifeq ($(TARGET_ARCH), cortex-m3)
+ CORE=M3
+ ARM_LDFLAGS := -Wl,--cpu=Cortex-M3
+
+ else ifeq ($(TARGET_ARCH), cortex-m33)
+ CORE=M33
+ ARM_LDFLAGS := -Wl,--cpu=Cortex-M33
+ TARGET_SPECIFIC_FLAGS += -D__DSP_PRESENT=1 -D__FPU_PRESENT=1 -D__VTOR_PRESENT=1 -D__FPU_USED=1
+ FLOAT=hard
+
+ else ifeq ($(TARGET_ARCH), cortex-m33+nodsp)
+ CORE=M33
+ ARM_LDFLAGS := -Wl,--cpu=Cortex-M33.no_dsp.no_fp
+
+ else ifeq ($(TARGET_ARCH), cortex-m4)
+ CORE=M4
+ ARM_LDFLAGS := -Wl,--cpu=Cortex-M4.no_fp
+ GCC_TARGET_ARCH := cortex-m4+nofp
+
+ else ifeq ($(TARGET_ARCH), cortex-m4+fp)
+ CORE=M4
+ ARM_LDFLAGS := -Wl,--cpu=Cortex-M4
+ TARGET_SPECIFIC_FLAGS += -D__FPU_PRESENT=1
+ FLOAT=hard
+ GCC_TARGET_ARCH := cortex-m4
+
+ else ifeq ($(TARGET_ARCH), cortex-m55)
+ CORE=M55
+ ARM_LDFLAGS := -Wl,--cpu=8.1-M.Main.mve.fp
+ TARGET_SPECIFIC_FLAGS += -D__DSP_PRESENT=1 -D__FPU_PRESENT=1
+ FLOAT=hard
+
+ else ifeq ($(TARGET_ARCH), cortex-m55+nodsp+nofp)
+ CORE=M55
+ ARM_LDFLAGS := -Wl,--cpu=8.1-M.Main.mve.no_dsp.no_fp
+
+ else ifeq ($(TARGET_ARCH), cortex-m55+nofp)
+ CORE=M55
+ ARM_LDFLAGS := -Wl,--cpu=8.1-M.Main.mve.no_fp
+ TARGET_SPECIFIC_FLAGS += -D__DSP_PRESENT=1
+
+ else ifeq ($(TARGET_ARCH), cortex-m7)
+ CORE=M7
+ ARM_LDFLAGS := -Wl,--cpu=Cortex-M7.no_fp
+ GCC_TARGET_ARCH := cortex-m7+nofp
+
+ else ifeq ($(TARGET_ARCH), cortex-m7+fp)
+ CORE=M7
+ ARM_LDFLAGS := -Wl,--cpu=Cortex-M7
+ FLOAT=hard
+ GCC_TARGET_ARCH := cortex-m7
+
+ 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 ($(FLOAT),soft)
+ FLOAT=softfp
+ endif
+ endif
+
+ # Toolchain specfic flags
+ ifeq ($(TOOLCHAIN), armclang)
+ CXX_TOOL := armclang
+ CC_TOOL := armclang
+ AR_TOOL := armar
+ LD := armlink
+
+ FLAGS_ARMC = \
+ --target=arm-arm-none-eabi \
+ -mcpu=$(TARGET_ARCH)
+
+ # For debug, include specific dwarf format symbols
+ ifeq ($(BUILD_TYPE), debug)
+ ifneq ($(ARMCLANG_DEBUG_DWARF_LEVEL),)
+ FLAGS_ARMC += -gdwarf-$(ARMCLANG_DEBUG_DWARF_LEVEL)
+ endif
+ endif
+
+ CXXFLAGS += $(FLAGS_ARMC)
+ CCFLAGS += $(FLAGS_ARMC)
+ LDFLAGS += $(ARM_LDFLAGS)
+
+ # Arm Compiler will not link the Math library (see below), therefore we're filtering it out.
+ # See Fatal error: L6450U: Cannot find library m:
+ # "Arm Compiler is designed to run in a bare metal environment,
+ # and automatically includes implementations of these functions,
+ # and so no such flag is necessary."
+ # https://developer.arm.com/documentation/100891/0611/troubleshooting/general-troubleshooting-advice
+ MICROLITE_LIBS := $(filter-out -lm,$(MICROLITE_LIBS))
+
+ else 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)
+
+ else
+ $(error "TOOLCHAIN=$(TOOLCHAIN) is not supported.")
+ endif
+
+ PLATFORM_FLAGS = \
+ -DTF_LITE_MCU_DEBUG_LOG \
+ -mthumb \
+ -mfloat-abi=$(FLOAT) \
+ -funsigned-char \
+ -mlittle-endian \
+ -Wno-type-limits \
+ -Wno-unused-private-field \
+ -fomit-frame-pointer \
+ -MD \
+ -DCPU_CORTEX_$(CORE)=1 \
+ $(TARGET_SPECIFIC_FLAGS)
+
+ # Common + C/C++ flags
+ CXXFLAGS += $(PLATFORM_FLAGS)
+ CCFLAGS += $(PLATFORM_FLAGS)
+
+endif