1 files changed, 65 insertions, 0 deletions
diff --git a/scripts/cmake/bare-metal-toolchain.cmake b/scripts/cmake/bare-metal-toolchain.cmake
new file mode 100644
index 0000000..5d91b98
--- /dev/null
+++ b/scripts/cmake/bare-metal-toolchain.cmake
@@ -0,0 +1,65 @@
+#----------------------------------------------------------------------------
+#  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.
+#----------------------------------------------------------------------------
+# specify the cross compiler
+set(CMAKE_C_COMPILER                armclang)
+set(CMAKE_CXX_COMPILER              armclang)
+set(CMAKE_C_LINKER_PREFERENCE       armlink)
+set(CMAKE_ASM_LINKER_PREFERENCE     armlink)
+set(CMAKE_ASM_COMPILER              armasm)
+set(CMAKE_ASM_COMPILER_AR           armar)
+
+set(CMAKE_CROSSCOMPILING            true)
+set(CMAKE_SYSTEM_NAME               Generic)
+
+set(MIN_ARM_CLANG_VERSION           6.14)
+
+if (NOT DEFINED CMAKE_SYSTEM_PROCESSOR)
+    set(CMAKE_SYSTEM_PROCESSOR      cortex-m55)
+endif()
+
+# Skip compiler test execution
+set(CMAKE_C_COMPILER_WORKS          1)
+set(CMAKE_CXX_COMPILER_WORKS        1)
+
+set(PLATFORM_HAL                    1)
+
+set(WARNING_OPTS                    "-Wall -Wextra -Wvla")
+set(SPECIAL_OPTS                    "-fno-rtti -funsigned-char -fno-function-sections -fno-exceptions")
+set(PLATFORM_FLAGS                  "-mthumb --target=arm-arm-non-eabi -mlittle-endian -DPLATFORM_HAL=${PLATFORM_HAL}")
+
+set(CMAKE_C_FLAGS_DEBUG             "-DDEBUG -O0")
+set(CMAKE_C_FLAGS_RELEASE           "-DNDEBUG -O3")
+
+set(CMAKE_CXX_FLAGS_DEBUG           "-DDEBUG -O0")
+set(CMAKE_CXX_FLAGS_RELEASE         "-DNDEBUG -O3")
+
+if (CMAKE_SYSTEM_PROCESSOR STREQUAL cortex-m55)
+    # Flags for cortex-m55
+    set(CPU_CORTEX_M55              1)
+    set(CPU_CC                      "-mcpu=cortex-m55 -mfloat-abi=hard -MD -DCPU_CORTEX_M55=1 -DARM_MATH_DSP -DARM_MATH_LOOPUNROLL -D__FPU_USED=1")
+    set(CPU_LD                      "--cpu=8.1-M.Main.dsp")
+elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL cortex-m33)
+    # Flags for cortex-m33 to go here
+endif()
+
+set(ALL_COMMON_FLAGS                "${CPU_CC} ${WARNING_OPTS} ${SPECIAL_OPTS} ${PLATFORM_FLAGS}")
+
+function(enforce_compiler_version)
+    if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS ${MIN_ARM_CLANG_VERSION})
+        message( FATAL_ERROR "Arm compiler version must be ${MIN_ARM_CLANG_VERSION} or greater to support ${CMAKE_SYSTEM_PROCESSOR} architecture." )
+    endif()
+endfunction()