soc: nxp: imx9: add basic support for i.MX943 M33

Added basic support for i.MX943 M33.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>

soc/nxp/imx/imx9/imx943/CMakeLists.txt

@@ -5,4 +5,6 @@ zephyr_include_directories(.)
 
 if(CONFIG_SOC_MIMX94398_A55)
   add_subdirectory(a55)
+elseif(CONFIG_SOC_MIMX94398_M33)
+  add_subdirectory(m33)
 endif()

soc/nxp/imx/imx9/imx943/Kconfig

@@ -7,3 +7,14 @@ config SOC_MIMX94398_A55
 	select ARM_ARCH_TIMER if SYS_CLOCK_EXISTS
 	select HAS_MCUX
 	select HAS_MCUX_CACHE
+
+config SOC_MIMX94398_M33
+	select ARM
+	select CPU_CORTEX_M33
+	select CPU_HAS_FPU
+	select CPU_HAS_ARM_MPU
+	select CPU_HAS_ARM_SAU
+	select ARM_MPU
+	select ARMV8_M_DSP
+	select HAS_MCUX
+	select HAS_MCUX_XCACHE

soc/nxp/imx/imx9/imx943/Kconfig.defconfig.mimx94398.m33

@@ -0,0 +1,23 @@
+# Copyright 2025 NXP
+# SPDX-License-Identifier: Apache-2.0
+
+if SOC_MIMX94398_M33
+
+DT_CHOSEN_Z_FLASH := zephyr,flash
+
+config FLASH_SIZE
+	default $(dt_chosen_reg_size_int,$(DT_CHOSEN_Z_FLASH),0,K)
+
+config FLASH_BASE_ADDRESS
+	default $(dt_chosen_reg_addr_hex,$(DT_CHOSEN_Z_FLASH))
+
+config MCUX_CORE_SUFFIX
+	default "_cm33_core1" if SOC_MIMX94398_M33
+
+config NUM_IRQS
+	default 405
+
+config SYS_CLOCK_HW_CYCLES_PER_SEC
+	default $(dt_node_int_prop_int,/cpus/cpu@0,clock-frequency)
+
+endif # SOC_MIMX94398_M33

soc/nxp/imx/imx9/imx943/Kconfig.soc

@@ -11,6 +11,12 @@ config SOC_MIMX94398_A55
 	help
 	  NXP i.MX943 A55
 
+config SOC_MIMX94398_M33
+	bool
+	select SOC_MIMX94398
+	help
+	  NXP i.MX943 M33
+
 config SOC
 	default "mimx94398" if SOC_MIMX94398
 

soc/nxp/imx/imx9/imx943/m33/CMakeLists.txt

@@ -0,0 +1,5 @@
+# Copyright 2025 NXP
+
+zephyr_include_directories(.)
+
+set(SOC_LINKER_SCRIPT ${ZEPHYR_BASE}/include/zephyr/arch/arm/cortex_m/scripts/linker.ld CACHE INTERNAL "")

soc/nxp/imx/imx9/imx943/m33/soc.h

@@ -0,0 +1,12 @@
+/*
+ * Copyright 2025 NXP
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef _SOC_NXP_IMX_IMX943_M33_SOC_H_
+#define _SOC_NXP_IMX_IMX943_M33_SOC_H_
+
+#include <fsl_device_registers.h>
+
+#endif /* _SOC_NXP_IMX_IMX943_M33_SOC_H_ */

soc/nxp/imx/soc.yml

@@ -43,6 +43,7 @@ family:
     - name: mimx94398
       cpuclusters:
       - name: a55
+      - name: m33
     - name: mimx9596
       cpuclusters:
       - name: a55