add cmake for broadcom 64-bit, like 32-bit it compiles but text is only 8 bytes (incorrect)

examples/build_system/cmake/cpu/cortex-a53.cmake

@@ -0,0 +1,17 @@
+if (TOOLCHAIN STREQUAL "gcc")
+	set(TOOLCHAIN_COMMON_FLAGS
+		-mcpu=cortex-a53
+		)
+	# set(FREERTOS_PORT GCC_ARM_CM0 CACHE INTERNAL "")
+
+elseif (TOOLCHAIN STREQUAL "clang")
+	set(TOOLCHAIN_COMMON_FLAGS
+		--target=arm-none-eabi
+		-mcpu=cortex-a53
+		)
+	#set(FREERTOS_PORT GCC_ARM_CM0 CACHE INTERNAL "")
+
+elseif (TOOLCHAIN STREQUAL "iar")
+	message(FATAL_ERROR "IAR not supported")
+
+endif ()

examples/build_system/cmake/cpu/cortex-a72.cmake

@@ -0,0 +1,17 @@
+if (TOOLCHAIN STREQUAL "gcc")
+	set(TOOLCHAIN_COMMON_FLAGS
+		-mcpu=cortex-a72
+		)
+	# set(FREERTOS_PORT GCC_ARM_CM0 CACHE INTERNAL "")
+
+elseif (TOOLCHAIN STREQUAL "clang")
+	set(TOOLCHAIN_COMMON_FLAGS
+		--target=arm-none-eabi
+		-mcpu=cortex-a72
+		)
+	#set(FREERTOS_PORT GCC_ARM_CM0 CACHE INTERNAL "")
+
+elseif (TOOLCHAIN STREQUAL "iar")
+	message(FATAL_ERROR "IAR not supported")
+
+endif ()

examples/build_system/cmake/toolchain/aarch64_gcc.cmake

@@ -0,0 +1,21 @@
+if (NOT DEFINED CMAKE_C_COMPILER)
+  set(CMAKE_C_COMPILER "aarch64-none-elf-gcc")
+endif ()
+
+if (NOT DEFINED CMAKE_CXX_COMPILER)
+  set(CMAKE_CXX_COMPILER "aarch64-none-elf-g++")
+endif ()
+
+set(CMAKE_ASM_COMPILER ${CMAKE_C_COMPILER})
+set(CMAKE_SIZE "aarch64-none-elf-size" CACHE FILEPATH "")
+set(CMAKE_OBJCOPY "aarch64-none-elf-objcopy" CACHE FILEPATH "")
+set(CMAKE_OBJDUMP "aarch64-none-elf-objdump" CACHE FILEPATH "")
+
+include(${CMAKE_CURRENT_LIST_DIR}/common.cmake)
+
+get_property(IS_IN_TRY_COMPILE GLOBAL PROPERTY IN_TRY_COMPILE)
+if (IS_IN_TRY_COMPILE)
+  set(CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS} -nostdlib")
+  set(CMAKE_CXX_LINK_FLAGS "${CMAKE_CXX_LINK_FLAGS} -nostdlib")
+  cmake_print_variables(CMAKE_C_LINK_FLAGS)
+endif ()