5 files changed, 58 insertions, 8 deletions
diff --git a/tools/make/cpu/cortex-m0.mk b/tools/make/cpu/cortex-m0.mk
new file mode 100644
index 000000000..c264802c8
--- /dev/null
+++ b/tools/make/cpu/cortex-m0.mk
@@ -0,0 +1,14 @@
+ifeq ($(TOOLCHAIN),gcc)
+  CFLAGS += \
+    -mthumb \
+    -mcpu=cortex-m0 \
+    -mfloat-abi=soft \
+
+else ifeq ($(TOOLCHAIN),iar)
+  # IAR Flags
+  CFLAGS += --cpu cortex-m0
+  ASFLAGS += --cpu cortex-m0
+endif
+
+# For freeRTOS port source
+FREERTOS_PORTABLE_SRC = $(FREERTOS_PORTABLE_PATH)/ARM_CM0
diff --git a/tools/make/cpu/cortex-m0plus.mk b/tools/make/cpu/cortex-m0plus.mk
new file mode 100644
index 000000000..626f7156e
--- /dev/null
+++ b/tools/make/cpu/cortex-m0plus.mk
@@ -0,0 +1,14 @@
+ifeq ($(TOOLCHAIN),gcc)
+  CFLAGS += \
+    -mthumb \
+    -mcpu=cortex-m0plus \
+    -mfloat-abi=soft \
+
+else ifeq ($(TOOLCHAIN),iar)
+  # IAR Flags
+  CFLAGS += --cpu cortex-m0+
+  ASFLAGS += --cpu cortex-m0+
+endif
+
+# For freeRTOS port source
+FREERTOS_PORTABLE_SRC = $(FREERTOS_PORTABLE_PATH)/ARM_CM0
diff --git a/tools/make/cpu/cortex-m3.mk b/tools/make/cpu/cortex-m3.mk
new file mode 100644
index 000000000..c81cbace6
--- /dev/null
+++ b/tools/make/cpu/cortex-m3.mk
@@ -0,0 +1,17 @@
+ifeq ($(TOOLCHAIN),gcc)
+  CFLAGS += \
+    -mthumb \
+    -mcpu=cortex-m3 \
+    -mfloat-abi=soft \
+
+else ifeq ($(TOOLCHAIN),iar)
+  # IAR Flags
+  CFLAGS += \
+    --cpu cortex-m3 \
+
+  ASFLAGS += \
+     --cpu cortex-m3
+endif
+
+# For freeRTOS port source
+FREERTOS_PORTABLE_SRC = $(FREERTOS_PORTABLE_PATH)/ARM_CM3
diff --git a/tools/make/cpu/cortex-m33.mk b/tools/make/cpu/cortex-m33.mk
index 3d12b01fd..240ed0d49 100644
--- a/tools/make/cpu/cortex-m33.mk
+++ b/tools/make/cpu/cortex-m33.mk
@@ -5,10 +5,14 @@ ifeq ($(TOOLCHAIN),gcc)
     -mfloat-abi=hard \
     -mfpu=fpv5-sp-d16 \
 
-    #-mfpu=fpv5-d16 \
-
-  #set(FREERTOS_PORT GCC_ARM_CM33_NONSECURE CACHE INTERNAL "")
-  FREERTOS_PORTABLE_SRC = $(FREERTOS_PORTABLE_PATH)/ARM_CM33_NTZ/non_secure
 else ifeq ($(TOOLCHAIN),iar)
-  # TODO support IAR
+	CFLAGS += \
+		--cpu cortex-m33 \
+		--fpu VFPv5-SP \
+
+	ASFLAGS += \
+		--cpu cortex-m33 \
+		--fpu VFPv5-SP \
 endif
+
+FREERTOS_PORTABLE_SRC = $(FREERTOS_PORTABLE_PATH)/ARM_CM33_NTZ/non_secure
diff --git a/tools/make/cpu/cortex-m4.mk b/tools/make/cpu/cortex-m4.mk
index 890feefe3..fabe05632 100644
--- a/tools/make/cpu/cortex-m4.mk
+++ b/tools/make/cpu/cortex-m4.mk
@@ -5,8 +5,9 @@ ifeq ($(TOOLCHAIN),gcc)
     -mfloat-abi=hard \
     -mfpu=fpv4-sp-d16 \
 
-  #set(FREERTOS_PORT GCC_ARM_CM4F CACHE INTERNAL "")
-  FREERTOS_PORTABLE_SRC = $(FREERTOS_PORTABLE_PATH)/ARM_CM4F
 else ifeq ($(TOOLCHAIN),iar)
-  # TODO support IAR
+  CFLAGS += --cpu cortex-m4 --fpu VFPv4
+  ASFLAGS += --cpu cortex-m4 --fpu VFPv4
 endif
+
+FREERTOS_PORTABLE_SRC = $(FREERTOS_PORTABLE_PATH)/ARM_CM4F