alexander | 3c79893 | 2021-03-26 21:42:19 +0000 | [diff] [blame] | 1 | # Copyright (c) 2021 Arm Limited. All rights reserved. |
| 2 | # SPDX-License-Identifier: Apache-2.0 |
| 3 | # |
| 4 | # Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | # you may not use this file except in compliance with the License. |
| 6 | # You may obtain a copy of the License at |
| 7 | # |
| 8 | # http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | # |
| 10 | # Unless required by applicable law or agreed to in writing, software |
| 11 | # distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | # See the License for the specific language governing permissions and |
| 14 | # limitations under the License. |
| 15 | |
| 16 | # Generic Makefile target for ARM Cortex M builds. |
| 17 | # For more info see: tensorflow/lite/micro/cortex_m_generic/README.md |
| 18 | ifeq ($(TARGET),$(filter $(TARGET), cortex_m_ethos_eval)) |
| 19 | FLOAT := soft |
| 20 | GCC_TARGET_ARCH := $(TARGET_ARCH) |
| 21 | |
| 22 | ifeq ($(TARGET_ARCH), cortex-m0) |
| 23 | CORE=M0 |
| 24 | ARM_LDFLAGS := -Wl,--cpu=Cortex-M0 |
| 25 | |
| 26 | else ifeq ($(TARGET_ARCH), cortex-m3) |
| 27 | CORE=M3 |
| 28 | ARM_LDFLAGS := -Wl,--cpu=Cortex-M3 |
| 29 | |
| 30 | else ifeq ($(TARGET_ARCH), cortex-m33) |
| 31 | CORE=M33 |
| 32 | ARM_LDFLAGS := -Wl,--cpu=Cortex-M33 |
| 33 | TARGET_SPECIFIC_FLAGS += -D__DSP_PRESENT=1 -D__FPU_PRESENT=1 -D__VTOR_PRESENT=1 -D__FPU_USED=1 |
| 34 | FLOAT=hard |
| 35 | |
| 36 | else ifeq ($(TARGET_ARCH), cortex-m33+nodsp) |
| 37 | CORE=M33 |
| 38 | ARM_LDFLAGS := -Wl,--cpu=Cortex-M33.no_dsp.no_fp |
| 39 | |
| 40 | else ifeq ($(TARGET_ARCH), cortex-m4) |
| 41 | CORE=M4 |
| 42 | ARM_LDFLAGS := -Wl,--cpu=Cortex-M4.no_fp |
| 43 | GCC_TARGET_ARCH := cortex-m4+nofp |
| 44 | |
| 45 | else ifeq ($(TARGET_ARCH), cortex-m4+fp) |
| 46 | CORE=M4 |
| 47 | ARM_LDFLAGS := -Wl,--cpu=Cortex-M4 |
| 48 | TARGET_SPECIFIC_FLAGS += -D__FPU_PRESENT=1 |
| 49 | FLOAT=hard |
| 50 | GCC_TARGET_ARCH := cortex-m4 |
| 51 | |
| 52 | else ifeq ($(TARGET_ARCH), cortex-m55) |
| 53 | CORE=M55 |
| 54 | ARM_LDFLAGS := -Wl,--cpu=8.1-M.Main.mve.fp |
| 55 | TARGET_SPECIFIC_FLAGS += -D__DSP_PRESENT=1 -D__FPU_PRESENT=1 |
| 56 | FLOAT=hard |
| 57 | |
| 58 | else ifeq ($(TARGET_ARCH), cortex-m55+nodsp+nofp) |
| 59 | CORE=M55 |
| 60 | ARM_LDFLAGS := -Wl,--cpu=8.1-M.Main.mve.no_dsp.no_fp |
| 61 | |
| 62 | else ifeq ($(TARGET_ARCH), cortex-m55+nofp) |
| 63 | CORE=M55 |
| 64 | ARM_LDFLAGS := -Wl,--cpu=8.1-M.Main.mve.no_fp |
| 65 | TARGET_SPECIFIC_FLAGS += -D__DSP_PRESENT=1 |
| 66 | |
| 67 | else ifeq ($(TARGET_ARCH), cortex-m7) |
| 68 | CORE=M7 |
| 69 | ARM_LDFLAGS := -Wl,--cpu=Cortex-M7.no_fp |
| 70 | GCC_TARGET_ARCH := cortex-m7+nofp |
| 71 | |
| 72 | else ifeq ($(TARGET_ARCH), cortex-m7+fp) |
| 73 | CORE=M7 |
| 74 | ARM_LDFLAGS := -Wl,--cpu=Cortex-M7 |
| 75 | FLOAT=hard |
| 76 | GCC_TARGET_ARCH := cortex-m7 |
| 77 | |
| 78 | else |
| 79 | $(error "TARGET_ARCH=$(TARGET_ARCH) is not supported") |
| 80 | endif |
| 81 | |
| 82 | ifneq ($(filter cortex-m55%,$(TARGET_ARCH)),) |
| 83 | # soft-abi=soft disables MVE - use softfp instead for M55. |
| 84 | ifeq ($(FLOAT),soft) |
| 85 | FLOAT=softfp |
| 86 | endif |
| 87 | endif |
| 88 | |
| 89 | # Toolchain specfic flags |
| 90 | ifeq ($(TOOLCHAIN), armclang) |
| 91 | CXX_TOOL := armclang |
| 92 | CC_TOOL := armclang |
| 93 | AR_TOOL := armar |
| 94 | LD := armlink |
| 95 | |
| 96 | FLAGS_ARMC = \ |
| 97 | --target=arm-arm-none-eabi \ |
| 98 | -mcpu=$(TARGET_ARCH) |
| 99 | |
| 100 | # For debug, include specific dwarf format symbols |
| 101 | ifeq ($(BUILD_TYPE), debug) |
| 102 | ifneq ($(ARMCLANG_DEBUG_DWARF_LEVEL),) |
| 103 | FLAGS_ARMC += -gdwarf-$(ARMCLANG_DEBUG_DWARF_LEVEL) |
| 104 | endif |
| 105 | endif |
| 106 | |
| 107 | CXXFLAGS += $(FLAGS_ARMC) |
| 108 | CCFLAGS += $(FLAGS_ARMC) |
| 109 | LDFLAGS += $(ARM_LDFLAGS) |
| 110 | |
| 111 | # Arm Compiler will not link the Math library (see below), therefore we're filtering it out. |
| 112 | # See Fatal error: L6450U: Cannot find library m: |
| 113 | # "Arm Compiler is designed to run in a bare metal environment, |
| 114 | # and automatically includes implementations of these functions, |
| 115 | # and so no such flag is necessary." |
| 116 | # https://developer.arm.com/documentation/100891/0611/troubleshooting/general-troubleshooting-advice |
| 117 | MICROLITE_LIBS := $(filter-out -lm,$(MICROLITE_LIBS)) |
| 118 | |
| 119 | else ifeq ($(TOOLCHAIN), gcc) |
alexander | 3c79893 | 2021-03-26 21:42:19 +0000 | [diff] [blame] | 120 | TARGET_TOOLCHAIN_PREFIX := arm-none-eabi- |
| 121 | |
| 122 | FLAGS_GCC = -mcpu=$(GCC_TARGET_ARCH) -mfpu=auto |
| 123 | CXXFLAGS += $(FLAGS_GCC) |
| 124 | CCFLAGS += $(FLAGS_GCC) |
| 125 | |
| 126 | else |
| 127 | $(error "TOOLCHAIN=$(TOOLCHAIN) is not supported.") |
| 128 | endif |
| 129 | |
Isabella Gottardi | c5d8bda | 2021-07-21 10:35:08 +0100 | [diff] [blame] | 130 | |
alexander | 3c79893 | 2021-03-26 21:42:19 +0000 | [diff] [blame] | 131 | PLATFORM_FLAGS = \ |
| 132 | -DTF_LITE_MCU_DEBUG_LOG \ |
| 133 | -mthumb \ |
| 134 | -mfloat-abi=$(FLOAT) \ |
| 135 | -funsigned-char \ |
| 136 | -mlittle-endian \ |
| 137 | -Wno-type-limits \ |
| 138 | -Wno-unused-private-field \ |
| 139 | -fomit-frame-pointer \ |
| 140 | -MD \ |
| 141 | -DCPU_CORTEX_$(CORE)=1 \ |
| 142 | $(TARGET_SPECIFIC_FLAGS) |
| 143 | |
| 144 | # Common + C/C++ flags |
Cisco Cervellera | 414b1b9 | 2021-09-28 18:15:10 +0100 | [diff] [blame] | 145 | CXXFLAGS += $(PLATFORM_FLAGS) |
| 146 | CCFLAGS += $(PLATFORM_FLAGS) |
alexander | 3c79893 | 2021-03-26 21:42:19 +0000 | [diff] [blame] | 147 | |
| 148 | endif |