diff --git a/Kconfig b/Kconfig
index 0bed3e8f..359ec54c 100644
--- a/Kconfig
+++ b/Kconfig
@@ -91,19 +91,20 @@ menu "Platform"
######################### config options of bsp #####################
config PLATFORM
string
- default "virt" if PLATFORM_QEMU_ARM_VIRT_CM7 || PLATFORM_QEMU_ARM_VIRT_CM4 || PRODUCT_QEMU_RISCV32_VIRT || PLATFORM_QEMU_CSKY_SMARTL || PLATFORM_QEMU_XTENSA_ESP32
+ default "virt" if PLATFORM_QEMU_ARM_VIRT_CM7 || PLATFORM_QEMU_ARM_VIRT_CM4 || PLATFORM_QEMU_ARM_VIRT_CM55 || PRODUCT_QEMU_RISCV32_VIRT || PLATFORM_QEMU_CSKY_SMARTL || PLATFORM_QEMU_XTENSA_ESP32
config PRODUCT_NAME
string
default "arm_virt" if PRODUCT_QEMU_ARM
default "arm_mps2_an386" if PRODUCT_QEMU_ARM_MPS2_AN386
+ default "arm_mps3_an547" if PRODUCT_QEMU_ARM_MPS3_AN547
default "riscv32_virt" if PRODUCT_QEMU_RISCV32_VIRT
default "csky_smartl_e802" if PRODUCT_QEMU_CSKY_SMARTL_E802
default "xtensa_esp32" if PRODUCT_QEMU_XTENSA_ESP32
config DEVICE_COMPANY
string
- default "qemu" if PLATFORM_QEMU_ARM_VIRT_CM7 || PLATFORM_QEMU_ARM_VIRT_CM4 || PRODUCT_QEMU_RISCV32_VIRT || PLATFORM_QEMU_CSKY_SMARTL || PLATFORM_QEMU_XTENSA_ESP32
+ default "qemu" if PLATFORM_QEMU_ARM_VIRT_CM7 || PLATFORM_QEMU_ARM_VIRT_CM4 || PLATFORM_QEMU_ARM_VIRT_CM55 || PRODUCT_QEMU_RISCV32_VIRT || PLATFORM_QEMU_CSKY_SMARTL || PLATFORM_QEMU_XTENSA_ESP32
choice
prompt "Chip"
@@ -128,6 +129,12 @@ config PLATFORM_QEMU_ARM_VIRT_CM4
help
QEMU ARM Virtual Platform using Cortex-M4 CPU.
+config PLATFORM_QEMU_ARM_VIRT_CM55
+ bool "qemu_arm_virt_cm55"
+ select ARCH_CORTEX_M55
+ help
+ QEMU ARM Virtual Platform using Cortex-M55 CPU.
+
config PLATFORM_QEMU_RISCV32_VIRT
bool "qemu_riscv32_virt"
select ARCH_RISCV32
@@ -159,6 +166,9 @@ config PRODUCT_QEMU_ARM
config PRODUCT_QEMU_ARM_MPS2_AN386
bool "arm_mps2_an386" if PLATFORM_QEMU_ARM_VIRT_CM4
+config PRODUCT_QEMU_ARM_MPS3_AN547
+ bool "arm_mps3_an547" if PLATFORM_QEMU_ARM_VIRT_CM55
+
config PRODUCT_QEMU_RISCV32_VIRT
bool "riscv32_virt" if PLATFORM_QEMU_RISCV32_VIRT
diff --git a/arch/BUILD.gn b/arch/BUILD.gn
index 7e0ec408..f1bed67e 100644
--- a/arch/BUILD.gn
+++ b/arch/BUILD.gn
@@ -37,7 +37,7 @@ module_group("arch") {
modules = []
if ("$board_cpu" == "arm9" || "$board_cpu" == "cortex-m3" ||
"$board_cpu" == "cortex-m4" || "$board_cpu" == "cortex-m7" ||
- "$board_cpu" == "cortex-m33") {
+ "$board_cpu" == "cortex-m33" || "$board_cpu" == "cortex-m55") {
modules += [ "arm" ]
} else if ("$board_cpu" == "ck802" || "$board_cpu" == "e802") {
modules += [ "csky" ]
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index b8fb0225..9c82c634 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -94,6 +94,14 @@ config ARCH_CORTEX_M33
select ARCH_FPU_VFP_D32
select ARCH_FPU_VFP_NEON
+config ARCH_CORTEX_M55
+ bool
+ select ARCH_ARM_V7M
+ select ARCH_ARM_AARCH32
+ select ARCH_FPU_VFP_V4
+ select ARCH_FPU_VFP_D32
+ select ARCH_FPU_VFP_NEON
+
config ARCH_ARM9
bool
select ARCH_ARM_V5TE
@@ -105,4 +113,5 @@ config ARCH_CPU
default "cortex-m4" if ARCH_CORTEX_M4
default "cortex-m7" if ARCH_CORTEX_M7
default "cortex-m33" if ARCH_CORTEX_M33
+ default "cortex-m55" if ARCH_CORTEX_M55
default "arm9" if ARCH_ARM9
diff --git a/arch/arm/cortex-m55/gcc/BUILD.gn b/arch/arm/cortex-m55/gcc/BUILD.gn
new file mode 100755
index 00000000..dc23621d
--- /dev/null
+++ b/arch/arm/cortex-m55/gcc/BUILD.gn
@@ -0,0 +1,37 @@
+# Copyright (c) 2022-2022 Huawei Device Co., Ltd. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice, this list of
+# conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice, this list
+# of conditions and the following disclaimer in the documentation and/or other materials
+# provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its contributors may be used
+# to endorse or promote products derived from this software without specific prior written
+# permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import("//kernel/liteos_m/liteos.gni")
+
+module_group("gcc") {
+ if (defined(LOSCFG_SECURE_TRUSTZONE)) {
+ modules = [ "TZ" ]
+ } else {
+ modules = [ "NTZ" ]
+ }
+}
diff --git a/arch/arm/cortex-m55/gcc/NTZ/BUILD.gn b/arch/arm/cortex-m55/gcc/NTZ/BUILD.gn
new file mode 100755
index 00000000..16cedaca
--- /dev/null
+++ b/arch/arm/cortex-m55/gcc/NTZ/BUILD.gn
@@ -0,0 +1,45 @@
+# Copyright (c) 2022-2022 Huawei Device Co., Ltd. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice, this list of
+# conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice, this list
+# of conditions and the following disclaimer in the documentation and/or other materials
+# provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its contributors may be used
+# to endorse or promote products derived from this software without specific prior written
+# permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import("//kernel/liteos_m/liteos.gni")
+
+module_name = "arch"
+kernel_module(module_name) {
+ sources = [
+ "los_context.c",
+ "los_dispatch.S",
+ "los_exc.S",
+ "los_interrupt.c",
+ "los_timer.c",
+ ]
+ configs += [ "$LITEOSTOPDIR:warn_config" ]
+}
+
+config("public") {
+ include_dirs = [ "." ]
+}
diff --git a/arch/arm/cortex-m55/gcc/NTZ/los_arch_atomic.h b/arch/arm/cortex-m55/gcc/NTZ/los_arch_atomic.h
new file mode 100755
index 00000000..735d7526
--- /dev/null
+++ b/arch/arm/cortex-m55/gcc/NTZ/los_arch_atomic.h
@@ -0,0 +1,295 @@
+/*
+ * Copyright (c) 2022-2022 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _LOS_ARCH_ATOMIC_H
+#define _LOS_ARCH_ATOMIC_H
+
+#include "los_compiler.h"
+
+#ifdef __cplusplus
+#if __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+#endif /* __cplusplus */
+
+STATIC INLINE INT32 ArchAtomicRead(const Atomic *v)
+{
+ INT32 val;
+
+ __asm__ __volatile__("ldrex %0, [%1]\n"
+ : "=&r"(val)
+ : "r"(v)
+ : "cc");
+
+ return val;
+}
+
+STATIC INLINE VOID ArchAtomicSet(Atomic *v, INT32 setVal)
+{
+ UINT32 status;
+
+ do {
+ __asm__ __volatile__("ldrex %0, [%1]\n"
+ "strex %0, %2, [%1]\n"
+ : "=&r"(status)
+ : "r"(v), "r"(setVal)
+ : "cc");
+ } while (__builtin_expect(status != 0, 0));
+}
+
+STATIC INLINE INT32 ArchAtomicAdd(Atomic *v, INT32 addVal)
+{
+ INT32 val;
+ UINT32 status;
+
+ do {
+ __asm__ __volatile__("ldrex %1, [%2]\n"
+ "add %1, %1, %3\n"
+ "strex %0, %1, [%2]"
+ : "=&r"(status), "=&r"(val)
+ : "r"(v), "r"(addVal)
+ : "cc");
+ } while (__builtin_expect(status != 0, 0));
+
+ return val;
+}
+
+STATIC INLINE INT32 ArchAtomicSub(Atomic *v, INT32 subVal)
+{
+ INT32 val;
+ UINT32 status;
+
+ do {
+ __asm__ __volatile__("ldrex %1, [%2]\n"
+ "sub %1, %1, %3\n"
+ "strex %0, %1, [%2]"
+ : "=&r"(status), "=&r"(val)
+ : "r"(v), "r"(subVal)
+ : "cc");
+ } while (__builtin_expect(status != 0, 0));
+
+ return val;
+}
+
+STATIC INLINE VOID ArchAtomicInc(Atomic *v)
+{
+ (VOID)ArchAtomicAdd(v, 1);
+}
+
+STATIC INLINE VOID ArchAtomicDec(Atomic *v)
+{
+ (VOID)ArchAtomicSub(v, 1);
+}
+
+STATIC INLINE INT32 ArchAtomicIncRet(Atomic *v)
+{
+ return ArchAtomicAdd(v, 1);
+}
+
+STATIC INLINE INT32 ArchAtomicDecRet(Atomic *v)
+{
+ return ArchAtomicSub(v, 1);
+}
+
+/**
+ * @ingroup los_arch_atomic
+ * @brief Atomic exchange for 32-bit variable.
+ *
+ * @par Description:
+ * This API is used to implement the atomic exchange for 32-bit variable
+ * and return the previous value of the atomic variable.
+ * @attention
+ *
The pointer v must not be NULL.
+ *
+ * @param v [IN] The variable pointer.
+ * @param val [IN] The exchange value.
+ *
+ * @retval #INT32 The previous value of the atomic variable
+ * @par Dependency:
+ * - los_arch_atomic.h: the header file that contains the API declaration.
+ * @see
+ */
+STATIC INLINE INT32 ArchAtomicXchg32bits(volatile INT32 *v, INT32 val)
+{
+ INT32 prevVal = 0;
+ UINT32 status = 0;
+
+ do {
+ __asm__ __volatile__("ldrex %0, [%3]\n"
+ "strex %1, %4, [%3]"
+ : "=&r"(prevVal), "=&r"(status), "+m"(*v)
+ : "r"(v), "r"(val)
+ : "cc");
+ } while (__builtin_expect(status != 0, 0));
+
+ return prevVal;
+}
+
+/**
+ * @ingroup los_arch_atomic
+ * @brief Atomic exchange for 32-bit variable with compare.
+ *
+ * @par Description:
+ * This API is used to implement the atomic exchange for 32-bit variable, if the value of variable is equal to oldVal.
+ * @attention
+ * The pointer v must not be NULL.
+ *
+ * @param v [IN] The variable pointer.
+ * @param val [IN] The new value.
+ * @param oldVal [IN] The old value.
+ *
+ * @retval TRUE The previous value of the atomic variable is not equal to oldVal.
+ * @retval FALSE The previous value of the atomic variable is equal to oldVal.
+ * @par Dependency:
+ * - los_arch_atomic.h: the header file that contains the API declaration.
+ * @see
+ */
+STATIC INLINE BOOL ArchAtomicCmpXchg32bits(volatile INT32 *v, INT32 val, INT32 oldVal)
+{
+ INT32 prevVal = 0;
+ UINT32 status = 0;
+
+ do {
+ __asm__ __volatile__("ldrex %0, %2\n"
+ "mov %1, #0\n"
+ "cmp %0, %3\n"
+ "bne 1f\n"
+ "strex %1, %4, %2\n"
+ "1:"
+ : "=&r"(prevVal), "=&r"(status), "+Q"(*v)
+ : "r"(oldVal), "r"(val)
+ : "cc");
+ } while (__builtin_expect(status != 0, 0));
+
+ return prevVal != oldVal;
+}
+
+STATIC INLINE INT64 ArchAtomic64Read(const Atomic64 *v)
+{
+ INT64 val;
+ UINT32 intSave;
+
+ intSave = LOS_IntLock();
+ val = *v;
+ LOS_IntRestore(intSave);
+
+ return val;
+}
+
+STATIC INLINE VOID ArchAtomic64Set(Atomic64 *v, INT64 setVal)
+{
+ UINT32 intSave;
+
+ intSave = LOS_IntLock();
+ *v = setVal;
+ LOS_IntRestore(intSave);
+}
+
+STATIC INLINE INT64 ArchAtomic64Add(Atomic64 *v, INT64 addVal)
+{
+ INT64 val;
+ UINT32 intSave;
+
+ intSave = LOS_IntLock();
+ *v += addVal;
+ val = *v;
+ LOS_IntRestore(intSave);
+
+ return val;
+}
+
+STATIC INLINE INT64 ArchAtomic64Sub(Atomic64 *v, INT64 subVal)
+{
+ INT64 val;
+ UINT32 intSave;
+
+ intSave = LOS_IntLock();
+ *v -= subVal;
+ val = *v;
+ LOS_IntRestore(intSave);
+
+ return val;
+}
+
+STATIC INLINE VOID ArchAtomic64Inc(Atomic64 *v)
+{
+ (VOID)ArchAtomic64Add(v, 1);
+}
+
+STATIC INLINE INT64 ArchAtomic64IncRet(Atomic64 *v)
+{
+ return ArchAtomic64Add(v, 1);
+}
+
+STATIC INLINE VOID ArchAtomic64Dec(Atomic64 *v)
+{
+ (VOID)ArchAtomic64Sub(v, 1);
+}
+
+STATIC INLINE INT64 ArchAtomic64DecRet(Atomic64 *v)
+{
+ return ArchAtomic64Sub(v, 1);
+}
+
+STATIC INLINE INT64 ArchAtomicXchg64bits(Atomic64 *v, INT64 val)
+{
+ INT64 prevVal;
+ UINT32 intSave;
+
+ intSave = LOS_IntLock();
+ prevVal = *v;
+ *v = val;
+ LOS_IntRestore(intSave);
+
+ return prevVal;
+}
+
+STATIC INLINE BOOL ArchAtomicCmpXchg64bits(Atomic64 *v, INT64 val, INT64 oldVal)
+{
+ INT64 prevVal;
+ UINT32 intSave;
+
+ intSave = LOS_IntLock();
+ prevVal = *v;
+ if (prevVal == oldVal) {
+ *v = val;
+ }
+ LOS_IntRestore(intSave);
+
+ return prevVal != oldVal;
+}
+
+#ifdef __cplusplus
+#if __cplusplus
+}
+#endif /* __cplusplus */
+#endif /* __cplusplus */
+
+#endif /* _LOS_ARCH_ATOMIC_H */
diff --git a/arch/arm/cortex-m55/gcc/NTZ/los_arch_context.h b/arch/arm/cortex-m55/gcc/NTZ/los_arch_context.h
new file mode 100755
index 00000000..8e61631f
--- /dev/null
+++ b/arch/arm/cortex-m55/gcc/NTZ/los_arch_context.h
@@ -0,0 +1,129 @@
+/*
+ * Copyright (c) 2022-2022 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _LOS_ARCH_CONTEXT_H
+#define _LOS_ARCH_CONTEXT_H
+
+#include "los_config.h"
+#include "los_compiler.h"
+
+#ifdef __cplusplus
+#if __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+#endif /* __cplusplus */
+
+typedef struct TagTskContext {
+#if ((defined(__FPU_PRESENT) && (__FPU_PRESENT == 1U)) && \
+ (defined(__FPU_USED) && (__FPU_USED == 1U)))
+ UINT32 S16;
+ UINT32 S17;
+ UINT32 S18;
+ UINT32 S19;
+ UINT32 S20;
+ UINT32 S21;
+ UINT32 S22;
+ UINT32 S23;
+ UINT32 S24;
+ UINT32 S25;
+ UINT32 S26;
+ UINT32 S27;
+ UINT32 S28;
+ UINT32 S29;
+ UINT32 S30;
+ UINT32 S31;
+#endif
+ UINT32 uwR4;
+ UINT32 uwR5;
+ UINT32 uwR6;
+ UINT32 uwR7;
+ UINT32 uwR8;
+ UINT32 uwR9;
+ UINT32 uwR10;
+ UINT32 uwR11;
+ UINT32 uwPriMask;
+ UINT32 uwR0;
+ UINT32 uwR1;
+ UINT32 uwR2;
+ UINT32 uwR3;
+ UINT32 uwR12;
+ UINT32 uwLR;
+ UINT32 uwPC;
+ UINT32 uwxPSR;
+#if ((defined(__FPU_PRESENT) && (__FPU_PRESENT == 1U)) && \
+ (defined(__FPU_USED) && (__FPU_USED == 1U)))
+ UINT32 S0;
+ UINT32 S1;
+ UINT32 S2;
+ UINT32 S3;
+ UINT32 S4;
+ UINT32 S5;
+ UINT32 S6;
+ UINT32 S7;
+ UINT32 S8;
+ UINT32 S9;
+ UINT32 S10;
+ UINT32 S11;
+ UINT32 S12;
+ UINT32 S13;
+ UINT32 S14;
+ UINT32 S15;
+ UINT32 FPSCR;
+ UINT32 NO_NAME;
+#endif
+} TaskContext;
+
+/**
+ * @ingroup los_config
+ * @brief: Task start running function.
+ *
+ * @par Description:
+ * This API is used to start a task.
+ *
+ * @attention:
+ *
+ *
+ * @param: None.
+ *
+ * @retval None.
+ *
+ * @par Dependency:
+ * - los_config.h: the header file that contains the API declaration.
+ * @see None.
+ */
+extern VOID HalStartToRun(VOID);
+
+#ifdef __cplusplus
+#if __cplusplus
+}
+#endif /* __cplusplus */
+#endif /* __cplusplus */
+
+#endif /* _LOS_ARCH_CONTEXT_H */
diff --git a/arch/arm/cortex-m55/gcc/NTZ/los_arch_interrupt.h b/arch/arm/cortex-m55/gcc/NTZ/los_arch_interrupt.h
new file mode 100755
index 00000000..568e4525
--- /dev/null
+++ b/arch/arm/cortex-m55/gcc/NTZ/los_arch_interrupt.h
@@ -0,0 +1,676 @@
+/*
+ * Copyright (c) 2022-2022 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _LOS_ARCH_INTERRUPT_H
+#define _LOS_ARCH_INTERRUPT_H
+
+#include "los_config.h"
+#include "los_compiler.h"
+#include "los_interrupt.h"
+
+#ifdef __cplusplus
+#if __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+#endif /* __cplusplus */
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Maximum number of used hardware interrupts.
+ */
+#ifndef OS_HWI_MAX_NUM
+#define OS_HWI_MAX_NUM LOSCFG_PLATFORM_HWI_LIMIT
+#endif
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Highest priority of a hardware interrupt.
+ */
+#ifndef OS_HWI_PRIO_HIGHEST
+#define OS_HWI_PRIO_HIGHEST 0
+#endif
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Lowest priority of a hardware interrupt.
+ */
+#ifndef OS_HWI_PRIO_LOWEST
+#define OS_HWI_PRIO_LOWEST 7
+#endif
+
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Define the type of a hardware interrupt vector table function.
+ */
+typedef VOID (**HWI_VECTOR_FUNC)(void);
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Count of interrupts.
+ */
+extern UINT32 g_intCount;
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Count of M-Core system interrupt vector.
+ */
+#define OS_SYS_VECTOR_CNT 16
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Count of M-Core interrupt vector.
+ */
+#define OS_VECTOR_CNT (OS_SYS_VECTOR_CNT + OS_HWI_MAX_NUM)
+
+/* *
+ * @ingroup los_arch_interrupt
+ * AIRCR register priority group parameter .
+ */
+#define OS_NVIC_AIRCR_PRIGROUP 7
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Hardware interrupt error code: Invalid interrupt number.
+ *
+ * Value: 0x02000900
+ *
+ * Solution: Ensure that the interrupt number is valid.
+ * The value range of the interrupt number applicable for a Cortex-M33 platform is [OS_USER_HWI_MIN,OS_USER_HWI_MAX].
+ */
+#define OS_ERRNO_HWI_NUM_INVALID LOS_ERRNO_OS_ERROR(LOS_MOD_HWI, 0x00)
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Hardware interrupt error code: Null hardware interrupt handling function.
+ *
+ * Value: 0x02000901
+ *
+ * Solution: Pass in a valid non-null hardware interrupt handling function.
+ */
+#define OS_ERRNO_HWI_PROC_FUNC_NULL LOS_ERRNO_OS_ERROR(LOS_MOD_HWI, 0x01)
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Hardware interrupt error code: Insufficient interrupt resources for hardware interrupt creation.
+ *
+ * Value: 0x02000902
+ *
+ * Solution: Increase the configured maximum number of supported hardware interrupts.
+ */
+#define OS_ERRNO_HWI_CB_UNAVAILABLE LOS_ERRNO_OS_ERROR(LOS_MOD_HWI, 0x02)
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Hardware interrupt error code: Insufficient memory for hardware interrupt initialization.
+ *
+ * Value: 0x02000903
+ *
+ * Solution: Expand the configured memory.
+ */
+#define OS_ERRNO_HWI_NO_MEMORY LOS_ERRNO_OS_ERROR(LOS_MOD_HWI, 0x03)
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Hardware interrupt error code: The interrupt has already been created.
+ *
+ * Value: 0x02000904
+ *
+ * Solution: Check whether the interrupt specified by the passed-in interrupt number has already been created.
+ */
+#define OS_ERRNO_HWI_ALREADY_CREATED LOS_ERRNO_OS_ERROR(LOS_MOD_HWI, 0x04)
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Hardware interrupt error code: Invalid interrupt priority.
+ *
+ * Value: 0x02000905
+ *
+ * Solution: Ensure that the interrupt priority is valid.
+ * The value range of the interrupt priority applicable for a Cortex-M33 platform is [0,15].
+ */
+#define OS_ERRNO_HWI_PRIO_INVALID LOS_ERRNO_OS_ERROR(LOS_MOD_HWI, 0x05)
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Hardware interrupt error code: Incorrect interrupt creation mode.
+ *
+ * Value: 0x02000906
+ *
+ * Solution: The interrupt creation mode can be only set to OS_HWI_MODE_COMM or
+ * OS_HWI_MODE_FAST of which the value can be 0 or 1.
+ */
+#define OS_ERRNO_HWI_MODE_INVALID LOS_ERRNO_OS_ERROR(LOS_MOD_HWI, 0x06)
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Hardware interrupt error code: The interrupt has already been created as a fast interrupt.
+ *
+ * Value: 0x02000907
+ *
+ * Solution: Check whether the interrupt specified by the passed-in interrupt number has already been created.
+ */
+#define OS_ERRNO_HWI_FASTMODE_ALREADY_CREATED LOS_ERRNO_OS_ERROR(LOS_MOD_HWI, 0x07)
+
+/* *
+ * @ingroup los_arch_interrupt
+ * SysTick control and status register.
+ */
+#define OS_SYSTICK_CONTROL_REG 0xE000E010
+
+/* *
+ * @ingroup los_hw
+ * SysTick current value register.
+ */
+#define OS_SYSTICK_CURRENT_REG 0xE000E018
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Interrupt Priority-Level Registers.
+ */
+#define OS_NVIC_PRI_BASE 0xE000E400
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Interrupt enable register for 0-31.
+ */
+#define OS_NVIC_SETENA_BASE 0xE000E100
+
+/* *
+ * @ingroup los_arch_interrupt
+ * interrupt pending register.
+ */
+#define OS_NVIC_SETPEND_BASE 0xE000E200
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Interrupt active register.
+ */
+#define OS_NVIC_INT_ACT_BASE 0xE000E300
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Interrupt disable register for 0-31.
+ */
+#define OS_NVIC_CLRENA_BASE 0xE000E180
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Interrupt control and status register.
+ */
+#define OS_NVIC_INT_CTRL 0xE000ED04
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Vector table offset register.
+ */
+#define OS_NVIC_VTOR 0xE000ED08
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Application interrupt and reset control register
+ */
+#define OS_NVIC_AIRCR 0xE000ED0C
+
+/* *
+ * @ingroup los_arch_interrupt
+ * System exception priority register.
+ */
+#define OS_NVIC_EXCPRI_BASE 0xE000ED18
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Interrupt No. 1 :reset.
+ */
+#define OS_EXC_RESET 1
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Interrupt No. 2 :Non-Maskable Interrupt.
+ */
+#define OS_EXC_NMI 2
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Interrupt No. 3 :(hard)fault.
+ */
+#define OS_EXC_HARD_FAULT 3
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Interrupt No. 4 :MemManage fault.
+ */
+#define OS_EXC_MPU_FAULT 4
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Interrupt No. 5 :Bus fault.
+ */
+#define OS_EXC_BUS_FAULT 5
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Interrupt No. 6 :Usage fault.
+ */
+#define OS_EXC_USAGE_FAULT 6
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Interrupt No. 11 :SVCall.
+ */
+#define OS_EXC_SVC_CALL 11
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Interrupt No. 12 :Debug monitor.
+ */
+#define OS_EXC_DBG_MONITOR 12
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Interrupt No. 14 :PendSV.
+ */
+#define OS_EXC_PEND_SV 14
+
+/* *
+ * @ingroup los_arch_interrupt
+ * Interrupt No. 15 :SysTick.
+ */
+#define OS_EXC_SYS_TICK 15
+
+#if (LOSCFG_PLATFORM_HWI_WITH_ARG == 1)
+/* *
+ * @ingroup los_arch_interrupt
+ * Set interrupt vector table.
+ */
+extern VOID OsSetVector(UINT32 num, HWI_PROC_FUNC vector, VOID *arg);
+#else
+/* *
+ * @ingroup los_arch_interrupt
+ * Set interrupt vector table.
+ */
+extern VOID OsSetVector(UINT32 num, HWI_PROC_FUNC vector);
+#endif
+
+/* *
+ * @ingroup los_arch_interrupt
+ * @brief: Hardware interrupt entry function.
+ *
+ * @par Description:
+ * This API is used as all hardware interrupt handling function entry.
+ *
+ * @attention:
+ *
+ *
+ * @param:None.
+ *
+ * @retval:None.
+ * @par Dependency:
+ * - los_arch_interrupt.h: the header file that contains the API declaration.
+ * @see None.
+ */
+extern VOID HalInterrupt(VOID);
+
+/* *
+ * @ingroup los_arch_interrupt
+ * @brief: Default vector handling function.
+ *
+ * @par Description:
+ * This API is used to configure interrupt for null function.
+ *
+ * @attention:
+ *
+ *
+ * @param:None.
+ *
+ * @retval:None.
+ * @par Dependency:
+ * - los_arch_interrupt.h: the header file that contains the API declaration.
+ * @see None.
+ */
+extern VOID HalHwiDefaultHandler(VOID);
+
+/* *
+ * @ingroup los_arch_interrupt
+ * @brief: Reset the vector table.
+ *
+ * @par Description:
+ * This API is used to reset the vector table.
+ *
+ * @attention:
+ *
+ *
+ * @param:None.
+ *
+ * @retval:None.
+ * @par Dependency:
+ * - los_arch_interrupt.h: the header file that contains the API declaration.
+ * @see None.
+ */
+extern VOID Reset_Handler(VOID);
+
+/* *
+ * @ingroup los_arch_interrupt
+ * @brief: Pended System Call.
+ *
+ * @par Description:
+ * PendSV can be pended and is useful for an OS to pend an exception
+ * so that an action can be performed after other important tasks are completed.
+ *
+ * @attention:
+ *
+ *
+ * @param:None.
+ *
+ * @retval:None.
+ * @par Dependency:
+ * - los_arch_interrupt.h: the header file that contains the API declaration.
+ * @see None.
+ */
+extern VOID HalPendSV(VOID);
+
+
+#define OS_EXC_IN_INIT 0
+#define OS_EXC_IN_TASK 1
+#define OS_EXC_IN_HWI 2
+
+#define OS_EXC_MAX_BUF_LEN 25
+#define OS_EXC_MAX_NEST_DEPTH 1
+
+#define OS_NVIC_SHCSR 0xE000ED24
+#define OS_NVIC_CCR 0xE000ED14
+
+#define OS_NVIC_INT_ENABLE_SIZE 0x20
+#define OS_NVIC_INT_PRI_SIZE 0xF0
+#define OS_NVIC_EXCPRI_SIZE 0xC
+#define OS_NVIC_INT_CTRL_SIZE 4
+#define OS_NVIC_SHCSR_SIZE 4
+
+#define OS_NVIC_INT_PEND_SIZE OS_NVIC_INT_ACT_SIZE
+#define OS_NVIC_INT_ACT_SIZE OS_NVIC_INT_ENABLE_SIZE
+
+#define OS_EXC_FLAG_NO_FLOAT 0x10000000
+#define OS_EXC_FLAG_FAULTADDR_VALID 0x01
+#define OS_EXC_FLAG_IN_HWI 0x02
+
+#define OS_EXC_IMPRECISE_ACCESS_ADDR 0xABABABAB
+
+#define OS_EXC_EVENT 0x00000001
+
+/**
+ * @ingroup los_exc
+ * the struct of register files
+ *
+ * description: the register files that saved when exception triggered
+ *
+ * notes:the following register with prefix 'uw' correspond to the registers in the cpu data sheet.
+ */
+typedef struct TagExcContext {
+#if ((defined (__FPU_PRESENT) && (__FPU_PRESENT == 1U)) && \
+ (defined (__FPU_USED ) && (__FPU_USED == 1U)) )
+ UINT32 S16;
+ UINT32 S17;
+ UINT32 S18;
+ UINT32 S19;
+ UINT32 S20;
+ UINT32 S21;
+ UINT32 S22;
+ UINT32 S23;
+ UINT32 S24;
+ UINT32 S25;
+ UINT32 S26;
+ UINT32 S27;
+ UINT32 S28;
+ UINT32 S29;
+ UINT32 S30;
+ UINT32 S31;
+#endif
+ UINT32 uwR4;
+ UINT32 uwR5;
+ UINT32 uwR6;
+ UINT32 uwR7;
+ UINT32 uwR8;
+ UINT32 uwR9;
+ UINT32 uwR10;
+ UINT32 uwR11;
+ UINT32 uwPriMask;
+ /* auto save */
+ UINT32 uwSP;
+ UINT32 uwR0;
+ UINT32 uwR1;
+ UINT32 uwR2;
+ UINT32 uwR3;
+ UINT32 uwR12;
+ UINT32 uwLR;
+ UINT32 uwPC;
+ UINT32 uwxPSR;
+#if ((defined (__FPU_PRESENT) && (__FPU_PRESENT == 1U)) && \
+ (defined (__FPU_USED) && (__FPU_USED== 1U)))
+ UINT32 S0;
+ UINT32 S1;
+ UINT32 S2;
+ UINT32 S3;
+ UINT32 S4;
+ UINT32 S5;
+ UINT32 S6;
+ UINT32 S7;
+ UINT32 S8;
+ UINT32 S9;
+ UINT32 S10;
+ UINT32 S11;
+ UINT32 S12;
+ UINT32 S13;
+ UINT32 S14;
+ UINT32 S15;
+ UINT32 FPSCR;
+ UINT32 NO_NAME;
+#endif
+} EXC_CONTEXT_S;
+
+typedef VOID (*EXC_PROC_FUNC)(UINT32, EXC_CONTEXT_S *);
+VOID HalExcHandleEntry(UINT32 excType, UINT32 faultAddr, UINT32 pid, EXC_CONTEXT_S *excBufAddr);
+
+VOID HalExcNMI(VOID);
+VOID HalExcHardFault(VOID);
+VOID HalExcMemFault(VOID);
+VOID HalExcBusFault(VOID);
+VOID HalExcUsageFault(VOID);
+VOID HalSVCHandler(VOID);
+VOID HalHwiInit(VOID);
+
+/**
+ * @ingroup los_exc
+ * Cortex-M exception types: An error occurred while the bus status register was being pushed.
+ */
+#define OS_EXC_BF_STKERR 1
+
+/**
+ * @ingroup los_exc
+ * Cortex-M exception types: An error occurred while the bus status register was out of the stack.
+ */
+#define OS_EXC_BF_UNSTKERR 2
+
+/**
+ * @ingroup los_exc
+ * Cortex-M exception types: Bus status register imprecise data access violation.
+ */
+#define OS_EXC_BF_IMPRECISERR 3
+
+/**
+ * @ingroup los_exc
+ * Cortex-M exception types: Bus status register exact data access violation.
+ */
+#define OS_EXC_BF_PRECISERR 4
+
+/**
+ * @ingroup los_exc
+ * Cortex-M exception types: Bus status register access violation while pointing.
+ */
+#define OS_EXC_BF_IBUSERR 5
+
+/**
+ * @ingroup los_exc
+ * Cortex-M exception types: An error occurred while the memory management status register was being pushed.
+ */
+#define OS_EXC_MF_MSTKERR 6
+
+/**
+ * @ingroup los_exc
+ * Cortex-M exception types: An error occurred while the memory management status register was out of the stack.
+ */
+#define OS_EXC_MF_MUNSTKERR 7
+
+/**
+ * @ingroup los_exc
+ * Cortex-M exception types: Memory management status register data access violation.
+ */
+#define OS_EXC_MF_DACCVIOL 8
+
+/**
+ * @ingroup los_exc
+ * Cortex-M exception types: Memory management status register access violation.
+ */
+#define OS_EXC_MF_IACCVIOL 9
+
+
+/**
+ * @ingroup los_exc
+ * Cortex-M exception types: Incorrect usage indicating that the divisor is zero during the division operation.
+ */
+#define OS_EXC_UF_DIVBYZERO 10
+
+/**
+ * @ingroup los_exc
+ * Cortex-M exception types: Usage error, error caused by unaligned access.
+ */
+#define OS_EXC_UF_UNALIGNED 11
+
+/**
+ * @ingroup los_exc
+ * Cortex-M exception types: Incorrect usage attempting to execute coprocessor related instruction.
+ */
+#define OS_EXC_UF_NOCP 12
+
+/**
+ * @ingroup los_exc
+ * Cortex-M exception types: Usage error attempting to load EXC_RETURN to PC illegally on exception return.
+ */
+#define OS_EXC_UF_INVPC 13
+
+/**
+ * @ingroup los_exc
+ * Cortex-M exception types: Incorrect usage, attempting to cut to ARM state.
+ */
+#define OS_EXC_UF_INVSTATE 14
+
+/**
+ * @ingroup los_exc
+ * Cortex-M exception types: Incorrect usage. Executed instruction whose code is undefined.
+ */
+#define OS_EXC_UF_UNDEFINSTR 15
+
+/**
+ * @ingroup los_exc
+ * Cortex-M exception types: NMI
+ */
+
+#define OS_EXC_CAUSE_NMI 16
+
+/**
+ * @ingroup los_exc
+ * Cortex-M exception types: hard fault
+ */
+#define OS_EXC_CAUSE_HARDFAULT 17
+
+/**
+ * @ingroup los_exc
+ * Cortex-M exception types: The task handler exits.
+ */
+#define OS_EXC_CAUSE_TASK_EXIT 18
+
+/**
+ * @ingroup los_exc
+ * Cortex-M exception types: A fatal error.
+ */
+#define OS_EXC_CAUSE_FATAL_ERR 19
+
+/**
+ * @ingroup los_exc
+ * Cortex-M exception types: Hard Fault caused by a debug event.
+ */
+#define OS_EXC_CAUSE_DEBUGEVT 20
+
+/**
+ * @ingroup los_exc
+ * Cortex-M exception types: A hard fault that occurs when a quantity is oriented.
+ */
+#define OS_EXC_CAUSE_VECTBL 21
+
+/**
+ * @ingroup los_exc
+ * Exception information structure
+ *
+ * Description: Exception information saved when an exception is triggered on the Cortex-M33 platform.
+ *
+ */
+typedef struct TagExcInfo {
+ /**< Exception occurrence phase: 0 means that an exception occurs in initialization,
+ * 1 means that an exception occurs in a task, and 2 means that an exception occurs in an interrupt */
+ UINT16 phase;
+ /**< Exception type. When exceptions occur, check the numbers 1 - 21 listed above */
+ UINT16 type;
+ /**< If the exact address access error indicates the wrong access address when the exception occurred */
+ UINT32 faultAddr;
+ /**< An exception occurs in an interrupt, indicating the interrupt number.
+ * An exception occurs in the task, indicating the task ID, or 0xFFFFFFFF if it occurs during initialization */
+ UINT32 thrdPid;
+ /**< Number of nested exceptions. Currently only registered hook functions are supported
+ * when an exception is entered for the first time */
+ UINT16 nestCnt;
+ /**< reserve */
+ UINT16 reserved;
+ /**< Hardware context at the time an exception to the automatic stack floating-point register occurs */
+ EXC_CONTEXT_S *context;
+} ExcInfo;
+
+extern UINT32 g_curNestCount;
+extern UINT32 g_intCount;
+extern UINT8 g_uwExcTbl[32];
+extern ExcInfo g_excInfo;
+
+#define MAX_INT_INFO_SIZE (8 + 0x164)
+
+#ifdef __cplusplus
+#if __cplusplus
+}
+#endif /* __cplusplus */
+#endif /* __cplusplus */
+
+#endif /* _LOS_ARCH_INTERRUPT_H */
diff --git a/arch/arm/cortex-m55/gcc/NTZ/los_arch_timer.h b/arch/arm/cortex-m55/gcc/NTZ/los_arch_timer.h
new file mode 100755
index 00000000..652f7e36
--- /dev/null
+++ b/arch/arm/cortex-m55/gcc/NTZ/los_arch_timer.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2022-2022 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _LOS_ARCH_TIMER_H
+#define _LOS_ARCH_TIMER_H
+
+#include "los_config.h"
+#include "los_compiler.h"
+#include "los_timer.h"
+
+#ifdef __cplusplus
+#if __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+#endif /* __cplusplus */
+
+#ifdef __cplusplus
+#if __cplusplus
+}
+#endif /* __cplusplus */
+#endif /* __cplusplus */
+
+#endif /* _LOS_ARCH_TIMER_H */
diff --git a/arch/arm/cortex-m55/gcc/NTZ/los_context.c b/arch/arm/cortex-m55/gcc/NTZ/los_context.c
new file mode 100755
index 00000000..34f38ba6
--- /dev/null
+++ b/arch/arm/cortex-m55/gcc/NTZ/los_context.c
@@ -0,0 +1,159 @@
+/*
+ * Copyright (c) 2022-2022 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "los_context.h"
+#include "securec.h"
+#include "los_arch_context.h"
+#include "los_arch_interrupt.h"
+#include "los_task.h"
+#include "los_sched.h"
+#include "los_interrupt.h"
+#include "los_debug.h"
+
+/* ****************************************************************************
+ Function : ArchInit
+ Description : arch init function
+ Input : None
+ Output : None
+ Return : None
+ **************************************************************************** */
+LITE_OS_SEC_TEXT_INIT VOID ArchInit(VOID)
+{
+ HalHwiInit();
+}
+
+/* ****************************************************************************
+ Function : ArchSysExit
+ Description : Task exit function
+ Input : None
+ Output : None
+ Return : None
+ **************************************************************************** */
+LITE_OS_SEC_TEXT_MINOR VOID ArchSysExit(VOID)
+{
+ LOS_IntLock();
+ while (1) {
+ }
+}
+
+/* ****************************************************************************
+ Function : ArchTskStackInit
+ Description : Task stack initialization function
+ Input : taskID --- TaskID
+ stackSize --- Total size of the stack
+ topStack --- Top of task's stack
+ Output : None
+ Return : Context pointer
+ **************************************************************************** */
+LITE_OS_SEC_TEXT_INIT VOID *ArchTskStackInit(UINT32 taskID, UINT32 stackSize, VOID *topStack)
+{
+ TaskContext *context = (TaskContext *)((UINTPTR)topStack + stackSize - sizeof(TaskContext));
+
+#if ((defined(__FPU_PRESENT) && (__FPU_PRESENT == 1U)) && \
+ (defined(__FPU_USED) && (__FPU_USED == 1U)))
+ context->S16 = 0xAA000010;
+ context->S17 = 0xAA000011;
+ context->S18 = 0xAA000012;
+ context->S19 = 0xAA000013;
+ context->S20 = 0xAA000014;
+ context->S21 = 0xAA000015;
+ context->S22 = 0xAA000016;
+ context->S23 = 0xAA000017;
+ context->S24 = 0xAA000018;
+ context->S25 = 0xAA000019;
+ context->S26 = 0xAA00001A;
+ context->S27 = 0xAA00001B;
+ context->S28 = 0xAA00001C;
+ context->S29 = 0xAA00001D;
+ context->S30 = 0xAA00001E;
+ context->S31 = 0xAA00001F;
+ context->S0 = 0xAA000000;
+ context->S1 = 0xAA000001;
+ context->S2 = 0xAA000002;
+ context->S3 = 0xAA000003;
+ context->S4 = 0xAA000004;
+ context->S5 = 0xAA000005;
+ context->S6 = 0xAA000006;
+ context->S7 = 0xAA000007;
+ context->S8 = 0xAA000008;
+ context->S9 = 0xAA000009;
+ context->S10 = 0xAA00000A;
+ context->S11 = 0xAA00000B;
+ context->S12 = 0xAA00000C;
+ context->S13 = 0xAA00000D;
+ context->S14 = 0xAA00000E;
+ context->S15 = 0xAA00000F;
+ context->FPSCR = 0x00000000;
+ context->NO_NAME = 0xAA000011;
+#endif
+
+ context->uwR4 = 0x04040404L;
+ context->uwR5 = 0x05050505L;
+ context->uwR6 = 0x06060606L;
+ context->uwR7 = 0x07070707L;
+ context->uwR8 = 0x08080808L;
+ context->uwR9 = 0x09090909L;
+ context->uwR10 = 0x10101010L;
+ context->uwR11 = 0x11111111L;
+ context->uwPriMask = 0;
+ context->uwR0 = taskID;
+ context->uwR1 = 0x01010101L;
+ context->uwR2 = 0x02020202L;
+ context->uwR3 = 0x03030303L;
+ context->uwR12 = 0x12121212L;
+ context->uwLR = (UINT32)(UINTPTR)ArchSysExit;
+ context->uwPC = (UINT32)(UINTPTR)OsTaskEntry;
+ context->uwxPSR = 0x01000000L;
+
+ return (VOID *)context;
+}
+
+#if (LOSCFG_KERNEL_SIGNAL == 1)
+VOID *ArchSignalContextInit(VOID *stackPointer, VOID *stackTop, UINTPTR sigHandler, UINT32 param)
+{
+ UNUSED(stackTop);
+ TaskContext *context = (TaskContext *)((UINTPTR)stackPointer - sizeof(TaskContext));
+ (VOID)memset_s((VOID *)context, sizeof(TaskContext), 0, sizeof(TaskContext));
+
+ context->uwR0 = param;
+ context->uwPC = sigHandler;
+ context->uwxPSR = 0x01000000L; /* Thumb flag, always set 1 */
+
+ return (VOID *)context;
+}
+#endif
+
+LITE_OS_SEC_TEXT_INIT UINT32 ArchStartSchedule(VOID)
+{
+ (VOID)LOS_IntLock();
+ OsSchedStart();
+ HalStartToRun();
+ return LOS_OK; /* never return */
+}
diff --git a/arch/arm/cortex-m55/gcc/NTZ/los_dispatch.S b/arch/arm/cortex-m55/gcc/NTZ/los_dispatch.S
new file mode 100755
index 00000000..8f3952a5
--- /dev/null
+++ b/arch/arm/cortex-m55/gcc/NTZ/los_dispatch.S
@@ -0,0 +1,202 @@
+/*
+ * Copyright (c) 2022-2022 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+ .syntax unified
+ .arch armv8.1-m.main
+ .fpu vfpv3-d16-fp16
+ .thumb
+
+.equ OS_FPU_CPACR, 0xE000ED88
+.equ OS_FPU_CPACR_ENABLE, 0x00F00000
+.equ OS_NVIC_INT_CTRL, 0xE000ED04
+.equ OS_NVIC_SYSPRI3, 0xE000ED20
+.equ OS_NVIC_PENDSV_PRI, 0xF0F00000
+.equ OS_NVIC_PENDSVSET, 0x10000000
+.equ OS_TASK_STATUS_RUNNING, 0x0010
+
+ .section .text
+ .thumb
+
+.macro SIGNAL_CONTEXT_RESTORE
+ push {r12, lr}
+ blx OsSignalTaskContextRestore
+ pop {r12, lr}
+ cmp r0, #0
+ mov r1, r0
+ bne SignalContextRestore
+.endm
+
+ .type HalStartToRun, %function
+ .global HalStartToRun
+HalStartToRun:
+ .fnstart
+ .cantunwind
+
+ ldr r4, =OS_NVIC_SYSPRI3
+ ldr r5, =OS_NVIC_PENDSV_PRI
+ str r5, [r4]
+
+ mov r0, #2
+ msr CONTROL, r0
+
+ ldr r1, =g_losTask
+ ldr r0, [r1, #4]
+ ldr r12, [r0]
+
+ ldr.w r1, =OS_FPU_CPACR
+ ldr r1, [r1]
+ and r1, r1, #OS_FPU_CPACR_ENABLE
+ cmp r1, #OS_FPU_CPACR_ENABLE
+ bne __DisabledFPU
+
+ add r12, r12, #100
+ ldmfd r12!, {r0-r7}
+ add r12, r12, #72
+ msr psp, r12
+ vpush {s0}
+ vpop {s0}
+
+ mov lr, r5
+ cpsie I
+ bx r6
+
+__DisabledFPU:
+ add r12, r12, #36
+
+ ldmfd r12!, {r0-r7}
+ msr psp, r12
+ mov lr, r5
+ cpsie I
+ bx r6
+ .fnend
+
+ .type ArchIntLock, %function
+ .global ArchIntLock
+ArchIntLock:
+ .fnstart
+ .cantunwind
+
+ mrs r0, PRIMASK
+ cpsid I
+ bx lr
+ .fnend
+
+ .type ArchIntUnLock, %function
+ .global ArchIntUnLock
+ArchIntUnLock:
+ .fnstart
+ .cantunwind
+
+ mrs r0, PRIMASK
+ cpsie I
+ bx lr
+ .fnend
+
+ .type ArchIntRestore, %function
+ .global ArchIntRestore
+ArchIntRestore:
+ .fnstart
+ .cantunwind
+
+ msr PRIMASK, r0
+ bx lr
+ .fnend
+
+ .type ArchTaskSchedule, %function
+ .global ArchTaskSchedule
+ArchTaskSchedule:
+ .fnstart
+ .cantunwind
+
+ ldr r0, =OS_NVIC_INT_CTRL
+ ldr r1, =OS_NVIC_PENDSVSET
+ str r1, [r0]
+ dsb
+ isb
+ bx lr
+ .fnend
+
+ .type HalPendSV, %function
+ .global HalPendSV
+HalPendSV:
+ .fnstart
+ .cantunwind
+
+ mrs r12, PRIMASK
+ cpsid I
+
+HalTaskSwitch:
+ SIGNAL_CONTEXT_RESTORE
+
+ push {r12, lr}
+ blx OsSchedTaskSwitch
+ pop {r12, lr}
+ cmp r0, #0
+ mov r0, lr
+ bne TaskContextSwitch
+ msr PRIMASK, r12
+ bx lr
+
+TaskContextSwitch:
+ mov lr, r0
+ mrs r0, psp
+ stmfd r0!, {r4-r12}
+
+ ldr.w r3, =OS_FPU_CPACR
+ ldr r3, [r3]
+ and r3, r3, #OS_FPU_CPACR_ENABLE
+ cmp r3, #OS_FPU_CPACR_ENABLE
+ bne __DisabledFPU1
+ vstmdb r0!, {d8-d15}
+
+__DisabledFPU1:
+ ldr r5, =g_losTask
+ ldr r6, [r5]
+ str r0, [r6]
+
+ ldr r0, [r5, #4]
+ str r0, [r5]
+ ldr r1, [r0]
+
+SignalContextRestore:
+ ldr.w r3, =OS_FPU_CPACR
+ ldr r3, [r3]
+ and r3, r3, #OS_FPU_CPACR_ENABLE
+ cmp r3, #OS_FPU_CPACR_ENABLE
+ bne __DisabledFPU2
+ VLDMIA r1!, {d8-d15}
+
+__DisabledFPU2:
+ ldmfd r1!, {r4-r12}
+ msr psp, r1
+ msr PRIMASK, r12
+
+ bx lr
+ .fnend
diff --git a/arch/arm/cortex-m55/gcc/NTZ/los_exc.S b/arch/arm/cortex-m55/gcc/NTZ/los_exc.S
new file mode 100755
index 00000000..976b78e1
--- /dev/null
+++ b/arch/arm/cortex-m55/gcc/NTZ/los_exc.S
@@ -0,0 +1,381 @@
+/*
+ * Copyright (c) 2022-2022 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+ .syntax unified
+ .arch armv8.1-m.main
+ .fpu vfpv3-d16-fp16
+ .thumb
+.section .text
+
+ .global HalExcNMI
+ .global HalExcHardFault
+ .global HalExcMemFault
+ .global HalExcBusFault
+ .global HalExcUsageFault
+ .global HalSVCHandler
+
+ .extern HalExcHandleEntry
+ .extern g_uwExcTbl
+ .extern g_taskScheduled
+
+.equ OS_FLG_BGD_ACTIVE, 0x0002
+.equ OS_EXC_CAUSE_NMI, 16
+.equ OS_EXC_CAUSE_HARDFAULT, 17
+
+.equ HF_DEBUGEVT, 20
+.equ HF_VECTBL, 21
+
+.equ FLAG_ADDR_VALID, 0x10000
+.equ FLAG_HWI_ACTIVE, 0x20000
+.equ FLAG_NO_FLOAT, 0x10000000
+
+.equ OS_NVIC_FSR , 0xE000ED28 //include BusFault/MemFault/UsageFault State Register
+.equ OS_NVIC_HFSR , 0xE000ED2C //HardFault State Register
+.equ OS_NVIC_BFAR , 0xE000ED38
+.equ OS_NVIC_MMAR , 0xE000ED34
+.equ OS_NVIC_ACT_BASE , 0xE000E300
+.equ OS_NVIC_SHCSRS , 0xE000ED24
+.equ OS_NVIC_SHCSR_MASK , 0xC00
+
+ .type HalExcNMI, %function
+ .global HalExcNMI
+HalExcNMI:
+ .fnstart
+ .cantunwind
+ MOV R0, #OS_EXC_CAUSE_NMI
+ MOV R1, #0
+ B osExcDispatch
+ .fnend
+
+ .type HalExcHardFault, %function
+ .global HalExcHardFault
+HalExcHardFault:
+ .fnstart
+ .cantunwind
+ MOV R0, #OS_EXC_CAUSE_HARDFAULT
+ LDR R2, =OS_NVIC_HFSR
+ LDR R2, [R2]
+
+ MOV R1, #HF_DEBUGEVT
+ ORR R0, R0, R1, LSL #0x8
+ TST R2, #0x80000000
+ BNE osExcDispatch // DEBUGEVT
+
+ AND R0, R0 , #0x000000FF
+ MOV R1, #HF_VECTBL
+ ORR R0, R0, R1, LSL #0x8
+ TST R2, #0x00000002
+ BNE osExcDispatch // VECTBL
+
+ //if not DEBUGEVT and VECTBL then is FORCED
+ AND R0, R0, #0x000000FF
+
+ LDR R2, =OS_NVIC_FSR
+ LDR R2, [R2]
+
+ TST R2, #0x8000 // BFARVALID
+ BNE _HFBusFault // BusFault
+
+ TST R2, #0x80 // MMARVALID
+ BNE _HFMemFault // MemFault
+
+ MOV R12,#0
+ B osHFExcCommonBMU
+ .fnend
+
+ .type _HFBusFault, %function
+
+_HFBusFault:
+ .fnstart
+ .cantunwind
+ LDR R1, =OS_NVIC_BFAR
+ LDR R1, [R1]
+ MOV R12, #FLAG_ADDR_VALID
+ B osHFExcCommonBMU
+ .fnend
+
+ .type _HFMemFault, %function
+
+_HFMemFault:
+ .fnstart
+ .cantunwind
+ LDR R1, =OS_NVIC_MMAR
+ LDR R1, [R1]
+ MOV R12, #FLAG_ADDR_VALID
+ .fnend
+
+ .type osHFExcCommonBMU, %function
+ .global osHFExcCommonBMU
+osHFExcCommonBMU:
+ .fnstart
+ .cantunwind
+ CLZ R2, R2
+ LDR R3, =g_uwExcTbl
+ ADD R3, R3, R2
+ LDRB R2, [R3]
+ ORR R0, R0, R2, LSL #0x8
+ ORR R0, R0 ,R12
+ B osExcDispatch
+ .fnend
+
+ .type HalSVCHandler, %function
+ .global HalSVCHandler
+HalSVCHandler:
+ .fnstart
+ .cantunwind
+ TST LR, #0x4
+ ITE EQ
+ MRSEQ R0, MSP
+ MRSNE R0, PSP
+ LDR R1, [R0,#24]
+ LDRB R0, [R1,#-2]
+ MOV R1, #0
+ B osExcDispatch
+ .fnend
+
+ .type HalExcBusFault, %function
+ .global HalExcBusFault
+HalExcBusFault:
+ .fnstart
+ .cantunwind
+ LDR R0, =OS_NVIC_FSR
+ LDR R0, [R0]
+
+ TST R0, #0x8000 // BFARVALID
+ BEQ _ExcBusNoADDR
+ LDR R1, =OS_NVIC_BFAR
+ LDR R1, [R1]
+ MOV R12, #FLAG_ADDR_VALID
+ AND R0, R0, #0x1F00
+
+ B osExcCommonBMU
+ .fnend
+
+ .type _ExcBusNoADDR, %function
+ .global _ExcBusNoADDR
+_ExcBusNoADDR:
+ .fnstart
+ .cantunwind
+ MOV R12,#0
+ B osExcCommonBMU
+ .fnend
+
+ .type HalExcMemFault, %function
+ .global HalExcMemFault
+HalExcMemFault:
+ .fnstart
+ .cantunwind
+ LDR R0, =OS_NVIC_FSR
+ LDR R0, [R0]
+
+ TST R0, #0x80 // MMARVALID
+ BEQ _ExcMemNoADDR
+ LDR R1, =OS_NVIC_MMAR
+ LDR R1, [R1]
+ MOV R12, #FLAG_ADDR_VALID
+ AND R0, R0, #0x1B
+
+ B osExcCommonBMU
+ .fnend
+
+ .type _ExcMemNoADDR, %function
+ .global _ExcMemNoADDR
+_ExcMemNoADDR:
+ .fnstart
+ .cantunwind
+ MOV R12,#0
+ B osExcCommonBMU
+ .fnend
+
+ .type HalExcUsageFault, %function
+ .global HalExcUsageFault
+HalExcUsageFault:
+ .fnstart
+ .cantunwind
+ LDR R0, =OS_NVIC_FSR
+ LDR R0, [R0]
+
+ MOVW R1, #0x030F
+ LSL R1, R1, #16
+ AND R0, R0, R1
+ MOV R12, #0
+
+ .fnend
+
+ .type osExcCommonBMU, %function
+ .global osExcCommonBMU
+osExcCommonBMU:
+ .fnstart
+ .cantunwind
+ CLZ R0, R0
+ LDR R3, =g_uwExcTbl
+ ADD R3, R3, R0
+ LDRB R0, [R3]
+ ORR R0, R0, R12
+ .fnend
+// R0 -- EXCCAUSE(bit 16 is 1 if EXCADDR valid), R1 -- EXCADDR
+
+ .type osExcDispatch, %function
+ .global osExcDispatch
+osExcDispatch:
+ .fnstart
+ .cantunwind
+ LDR R2, =OS_NVIC_ACT_BASE
+ MOV R12, #8 // R12 is hwi check loop counter
+ .fnend
+
+ .type _hwiActiveCheck, %function
+ .global _hwiActiveCheck
+_hwiActiveCheck:
+ .fnstart
+ .cantunwind
+ LDR R3, [R2] // R3 store active hwi register when exc
+ CMP R3, #0
+ BEQ _hwiActiveCheckNext
+
+ // exc occured in IRQ
+ ORR R0, R0, #FLAG_HWI_ACTIVE
+ RBIT R2, R3
+ CLZ R2, R2
+ AND R12, R12, #1
+ ADD R2, R2, R12, LSL #5 // calculate R2 (hwi number) as pid
+ .fnend
+
+ .type _ExcInMSP, %function
+ .global _ExcInMSP
+_ExcInMSP:
+ .fnstart
+ .cantunwind
+ CMP LR, #0xFFFFFFE9
+ BNE _NoFloatInMsp
+ ADD R3, R13, #104
+ PUSH {R3}
+ MRS R12, PRIMASK // store message-->exc: disable int?
+ PUSH {R4-R12} // store message-->exc: {R4-R12}
+ VPUSH {D8-D15}
+ B _handleEntry
+ .fnend
+
+ .type _NoFloatInMsp, %function
+ .global _NoFloatInMsp
+_NoFloatInMsp:
+ .fnstart
+ .cantunwind
+ ADD R3, R13, #32
+ PUSH {R3} // save IRQ SP // store message-->exc: MSP(R13)
+
+ MRS R12, PRIMASK // store message-->exc: disable int?
+ PUSH {R4-R12} // store message-->exc: {R4-R12}
+ ORR R0, R0, #FLAG_NO_FLOAT
+ B _handleEntry
+ .fnend
+
+ .type _hwiActiveCheckNext, %function
+ .global _hwiActiveCheckNext
+_hwiActiveCheckNext:
+ .fnstart
+ .cantunwind
+ ADD R2, R2, #4 // next NVIC ACT ADDR
+ SUBS R12, R12, #1
+ BNE _hwiActiveCheck
+
+ /*NMI interrupt excption*/
+ LDR R2, =OS_NVIC_SHCSRS
+ LDRH R2,[R2]
+ LDR R3,=OS_NVIC_SHCSR_MASK
+ AND R2, R2,R3
+ CMP R2,#0
+ BNE _ExcInMSP
+ // exc occured in Task or Init or exc
+ // reserved for register info from task stack
+
+ LDR R2, =g_taskScheduled
+ LDR R2, [R2]
+ TST R2, #1 // OS_FLG_BGD_ACTIVE
+ BEQ _ExcInMSP // if exc occured in Init then branch
+
+
+ CMP LR, #0xFFFFFFED //auto push floating registers
+ BNE _NoFloatInPsp
+
+ // exc occured in Task
+ MOV R2, R13
+ SUB R13, #96 // add 8 Bytes reg(for STMFD)
+
+ MRS R3, PSP
+ ADD R12, R3, #104
+ PUSH {R12} // save task SP
+
+ MRS R12, PRIMASK
+ PUSH {R4-R12}
+ VPUSH {D8-D15}
+
+ // copy auto saved task register
+
+ LDMFD R3!, {R4-R11} // R4-R11 store PSP reg(auto push when exc in task)
+ VLDMIA R3!, {D8-D15}
+ VSTMDB R2!, {D8-D15}
+ STMFD R2!, {R4-R11}
+ B _handleEntry
+ .fnend
+
+ .type _NoFloatInPsp, %function
+ .global _NoFloatInPsp
+_NoFloatInPsp:
+ .fnstart
+ .cantunwind
+ MOV R2, R13 // no auto push floating registers
+ SUB R13, #32 // add 8 Bytes reg(for STMFD)
+
+ MRS R3, PSP
+ ADD R12, R3, #32
+ PUSH {R12} // save task SP
+
+ MRS R12, PRIMASK
+ PUSH {R4-R12}
+
+ LDMFD R3, {R4-R11} // R4-R11 store PSP reg(auto push when exc in task)
+ STMFD R2!, {R4-R11}
+ ORR R0, R0, #FLAG_NO_FLOAT
+ .fnend
+
+ .type _handleEntry, %function
+ .global _handleEntry
+_handleEntry:
+ .fnstart
+ .cantunwind
+ MOV R3, R13 // R13:the 4th param
+ CPSID I
+ CPSID F
+ B HalExcHandleEntry
+
+ NOP
+ .fnend
+
diff --git a/arch/arm/cortex-m55/gcc/NTZ/los_interrupt.c b/arch/arm/cortex-m55/gcc/NTZ/los_interrupt.c
new file mode 100755
index 00000000..86bef8ac
--- /dev/null
+++ b/arch/arm/cortex-m55/gcc/NTZ/los_interrupt.c
@@ -0,0 +1,601 @@
+/*
+ * Copyright (c) 2022-2022 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "los_interrupt.h"
+#include
+#include "securec.h"
+#include "los_context.h"
+#include "los_arch_interrupt.h"
+#include "los_debug.h"
+#include "los_hook.h"
+#include "los_task.h"
+#include "los_sched.h"
+#include "los_memory.h"
+#include "los_membox.h"
+
+#define DEF_HANDLER_START_INDEX 2
+/*lint -save -e40 -e522 -e533*/
+UINT32 g_intCount = 0;
+
+/*lint -restore*/
+
+/* *
+ * @ingroup los_hwi
+ * Hardware interrupt form mapping handling function array.
+ */
+STATIC HWI_PROC_FUNC __attribute__((aligned(LOSCFG_ARCH_HWI_VECTOR_ALIGN))) g_hwiForm[OS_VECTOR_CNT] = {0};
+
+#if (LOSCFG_PLATFORM_HWI_WITH_ARG == 1)
+
+typedef struct {
+ HWI_PROC_FUNC pfnHandler;
+ VOID *pParm;
+} HWI_HANDLER_FUNC;
+
+/* *
+ * @ingroup los_hwi
+ * Hardware interrupt handler form mapping handling function array.
+ */
+STATIC HWI_HANDLER_FUNC g_hwiHandlerForm[OS_VECTOR_CNT] = {{ (HWI_PROC_FUNC)0, (HWI_ARG_T)0 }};
+
+/* *
+ * @ingroup los_hwi
+ * Set interrupt vector table.
+ */
+VOID OsSetVector(UINT32 num, HWI_PROC_FUNC vector, VOID *arg)
+{
+ if ((num + OS_SYS_VECTOR_CNT) < OS_VECTOR_CNT) {
+ g_hwiForm[num + OS_SYS_VECTOR_CNT] = (HWI_PROC_FUNC)HalInterrupt;
+ g_hwiHandlerForm[num + OS_SYS_VECTOR_CNT].pfnHandler = vector;
+ g_hwiHandlerForm[num + OS_SYS_VECTOR_CNT].pParm = arg;
+ }
+}
+
+#else
+/* *
+ * @ingroup los_hwi
+ * hardware interrupt handler form mapping handling function array.
+ */
+STATIC HWI_PROC_FUNC g_hwiHandlerForm[OS_VECTOR_CNT] = {0};
+
+/* *
+ * @ingroup los_hwi
+ * Set interrupt vector table.
+ */
+VOID OsSetVector(UINT32 num, HWI_PROC_FUNC vector)
+{
+ if ((num + OS_SYS_VECTOR_CNT) < OS_VECTOR_CNT) {
+ g_hwiForm[num + OS_SYS_VECTOR_CNT] = HalInterrupt;
+ g_hwiHandlerForm[num + OS_SYS_VECTOR_CNT] = vector;
+ }
+}
+#endif
+
+WEAK VOID SysTick_Handler(VOID)
+{
+ return;
+}
+
+/* ****************************************************************************
+ Function : HwiNumGet
+ Description : Get an interrupt number
+ Input : None
+ Output : None
+ Return : Interrupt Indexes number
+ **************************************************************************** */
+STATIC UINT32 HwiNumGet(VOID)
+{
+ return __get_IPSR();
+}
+
+STATIC UINT32 HwiUnmask(HWI_HANDLE_T hwiNum)
+{
+ if (hwiNum >= OS_HWI_MAX_NUM) {
+ return OS_ERRNO_HWI_NUM_INVALID;
+ }
+
+ NVIC_EnableIRQ((IRQn_Type)hwiNum);
+
+ return LOS_OK;
+}
+
+STATIC UINT32 HwiMask(HWI_HANDLE_T hwiNum)
+{
+ if (hwiNum >= OS_HWI_MAX_NUM) {
+ return OS_ERRNO_HWI_NUM_INVALID;
+ }
+
+ NVIC_DisableIRQ((IRQn_Type)hwiNum);
+
+ return LOS_OK;
+}
+
+STATIC UINT32 HwiSetPriority(HWI_HANDLE_T hwiNum, UINT8 priority)
+{
+ if (hwiNum >= OS_HWI_MAX_NUM) {
+ return OS_ERRNO_HWI_NUM_INVALID;
+ }
+
+ if (priority > OS_HWI_PRIO_LOWEST) {
+ return OS_ERRNO_HWI_PRIO_INVALID;
+ }
+
+ NVIC_SetPriority((IRQn_Type)hwiNum, priority);
+
+ return LOS_OK;
+}
+
+STATIC UINT32 HwiPending(HWI_HANDLE_T hwiNum)
+{
+ if (hwiNum >= OS_HWI_MAX_NUM) {
+ return OS_ERRNO_HWI_NUM_INVALID;
+ }
+
+ NVIC_SetPendingIRQ((IRQn_Type)hwiNum);
+
+ return LOS_OK;
+}
+
+STATIC UINT32 HwiClear(HWI_HANDLE_T hwiNum)
+{
+ if (hwiNum >= OS_HWI_MAX_NUM) {
+ return OS_ERRNO_HWI_NUM_INVALID;
+ }
+
+ NVIC_ClearPendingIRQ((IRQn_Type)hwiNum);
+
+ return LOS_OK;
+}
+
+HwiControllerOps g_archHwiOps = {
+ .enableIrq = HwiUnmask,
+ .disableIrq = HwiMask,
+ .setIrqPriority = HwiSetPriority,
+ .getCurIrqNum = HwiNumGet,
+ .triggerIrq = HwiPending,
+ .clearIrq = HwiClear,
+};
+
+inline UINT32 ArchIsIntActive(VOID)
+{
+ return (g_intCount > 0);
+}
+/* ****************************************************************************
+ Function : HalHwiDefaultHandler
+ Description : default handler of the hardware interrupt
+ Input : None
+ Output : None
+ Return : None
+ **************************************************************************** */
+/*lint -e529*/
+LITE_OS_SEC_TEXT_MINOR VOID HalHwiDefaultHandler(VOID)
+{
+ UINT32 irqNum = HwiNumGet();
+ PRINT_ERR("%s irqnum:%u\n", __FUNCTION__, irqNum);
+ while (1) {}
+}
+
+WEAK VOID HalPreInterruptHandler(UINT32 arg)
+{
+ return;
+}
+
+WEAK VOID HalAftInterruptHandler(UINT32 arg)
+{
+ return;
+}
+
+/* ****************************************************************************
+ Function : HalInterrupt
+ Description : Hardware interrupt entry function
+ Input : None
+ Output : None
+ Return : None
+ **************************************************************************** */
+LITE_OS_SEC_TEXT VOID HalInterrupt(VOID)
+{
+ UINT32 hwiIndex;
+ UINT32 intSave;
+
+#if (LOSCFG_KERNEL_RUNSTOP == 1)
+ SCB->SCR &= (UINT32) ~((UINT32)SCB_SCR_SLEEPDEEP_Msk);
+#endif
+
+ intSave = LOS_IntLock();
+ g_intCount++;
+ LOS_IntRestore(intSave);
+
+ hwiIndex = HwiNumGet();
+
+ OsHookCall(LOS_HOOK_TYPE_ISR_ENTER, hwiIndex);
+
+ HalPreInterruptHandler(hwiIndex);
+
+#if (LOSCFG_PLATFORM_HWI_WITH_ARG == 1)
+ if (g_hwiHandlerForm[hwiIndex].pfnHandler != 0) {
+ g_hwiHandlerForm[hwiIndex].pfnHandler((VOID *)g_hwiHandlerForm[hwiIndex].pParm);
+ }
+#else
+ if (g_hwiHandlerForm[hwiIndex] != 0) {
+ g_hwiHandlerForm[hwiIndex]();
+ }
+#endif
+
+ HalAftInterruptHandler(hwiIndex);
+
+ OsHookCall(LOS_HOOK_TYPE_ISR_EXIT, hwiIndex);
+
+ intSave = LOS_IntLock();
+ g_intCount--;
+ LOS_IntRestore(intSave);
+}
+
+/* ****************************************************************************
+ Function : ArchHwiCreate
+ Description : create hardware interrupt
+ Input : hwiNum --- hwi num to create
+ hwiPrio --- priority of the hwi
+ mode --- unused
+ handler --- hwi handler
+ arg --- param of the hwi handler
+ Output : None
+ Return : LOS_OK on success or error code on failure
+ **************************************************************************** */
+LITE_OS_SEC_TEXT_INIT UINT32 ArchHwiCreate(HWI_HANDLE_T hwiNum,
+ HWI_PRIOR_T hwiPrio,
+ HWI_MODE_T mode,
+ HWI_PROC_FUNC handler,
+ HWI_ARG_T arg)
+{
+ UINT32 intSave;
+
+ if (handler == NULL) {
+ return OS_ERRNO_HWI_PROC_FUNC_NULL;
+ }
+
+ if (hwiNum >= OS_HWI_MAX_NUM) {
+ return OS_ERRNO_HWI_NUM_INVALID;
+ }
+
+ if (g_hwiForm[hwiNum + OS_SYS_VECTOR_CNT] != (HWI_PROC_FUNC)HalHwiDefaultHandler) {
+ return OS_ERRNO_HWI_ALREADY_CREATED;
+ }
+
+ if (hwiPrio > OS_HWI_PRIO_LOWEST) {
+ return OS_ERRNO_HWI_PRIO_INVALID;
+ }
+
+ intSave = LOS_IntLock();
+#if (LOSCFG_PLATFORM_HWI_WITH_ARG == 1)
+ OsSetVector(hwiNum, handler, arg);
+#else
+ OsSetVector(hwiNum, handler);
+#endif
+ HwiUnmask((IRQn_Type)hwiNum);
+ HwiSetPriority((IRQn_Type)hwiNum, hwiPrio);
+
+ LOS_IntRestore(intSave);
+
+ return LOS_OK;
+}
+
+/* ****************************************************************************
+ Function : ArchHwiDelete
+ Description : Delete hardware interrupt
+ Input : hwiNum --- hwi num to delete
+ Output : None
+ Return : LOS_OK on success or error code on failure
+ **************************************************************************** */
+LITE_OS_SEC_TEXT_INIT UINT32 ArchHwiDelete(HWI_HANDLE_T hwiNum)
+{
+ UINT32 intSave;
+
+ if (hwiNum >= OS_HWI_MAX_NUM) {
+ return OS_ERRNO_HWI_NUM_INVALID;
+ }
+
+ HwiMask((IRQn_Type)hwiNum);
+
+ intSave = LOS_IntLock();
+
+ g_hwiForm[hwiNum + OS_SYS_VECTOR_CNT] = (HWI_PROC_FUNC)HalHwiDefaultHandler;
+
+ LOS_IntRestore(intSave);
+
+ return LOS_OK;
+}
+
+#define FAULT_STATUS_REG_BIT 32
+#define USGFAULT (1 << 18)
+#define BUSFAULT (1 << 17)
+#define MEMFAULT (1 << 16)
+#define DIV0FAULT (1 << 4)
+#define UNALIGNFAULT (1 << 3)
+#define HARDFAULT_IRQN (-13)
+
+ExcInfo g_excInfo = {0};
+
+UINT8 g_uwExcTbl[FAULT_STATUS_REG_BIT] = {
+ 0, 0, 0, 0, 0, 0, OS_EXC_UF_DIVBYZERO, OS_EXC_UF_UNALIGNED,
+ 0, 0, 0, 0, OS_EXC_UF_NOCP, OS_EXC_UF_INVPC, OS_EXC_UF_INVSTATE, OS_EXC_UF_UNDEFINSTR,
+ 0, 0, 0, OS_EXC_BF_STKERR, OS_EXC_BF_UNSTKERR, OS_EXC_BF_IMPRECISERR, OS_EXC_BF_PRECISERR, OS_EXC_BF_IBUSERR,
+ 0, 0, 0, OS_EXC_MF_MSTKERR, OS_EXC_MF_MUNSTKERR, 0, OS_EXC_MF_DACCVIOL, OS_EXC_MF_IACCVIOL
+};
+
+#if (LOSCFG_KERNEL_PRINTF != 0)
+STATIC VOID OsExcNvicDump(VOID)
+{
+#define OS_NR_NVIC_EXC_DUMP_TYPES 7
+ UINT32 *base = NULL;
+ UINT32 len, i, j;
+ UINT32 rgNvicBases[OS_NR_NVIC_EXC_DUMP_TYPES] = {
+ OS_NVIC_SETENA_BASE, OS_NVIC_SETPEND_BASE, OS_NVIC_INT_ACT_BASE,
+ OS_NVIC_PRI_BASE, OS_NVIC_EXCPRI_BASE, OS_NVIC_SHCSR, OS_NVIC_INT_CTRL
+ };
+ UINT32 rgNvicLens[OS_NR_NVIC_EXC_DUMP_TYPES] = {
+ OS_NVIC_INT_ENABLE_SIZE, OS_NVIC_INT_PEND_SIZE, OS_NVIC_INT_ACT_SIZE,
+ OS_NVIC_INT_PRI_SIZE, OS_NVIC_EXCPRI_SIZE, OS_NVIC_SHCSR_SIZE,
+ OS_NVIC_INT_CTRL_SIZE
+ };
+ CHAR strRgEnable[] = "enable";
+ CHAR strRgPending[] = "pending";
+ CHAR strRgActive[] = "active";
+ CHAR strRgPriority[] = "priority";
+ CHAR strRgException[] = "exception";
+ CHAR strRgShcsr[] = "shcsr";
+ CHAR strRgIntCtrl[] = "control";
+ CHAR *strRgs[] = {
+ strRgEnable, strRgPending, strRgActive, strRgPriority,
+ strRgException, strRgShcsr, strRgIntCtrl
+ };
+
+ PRINTK("\r\nOS exception NVIC dump:\n");
+ for (i = 0; i < OS_NR_NVIC_EXC_DUMP_TYPES; i++) {
+ base = (UINT32 *)rgNvicBases[i];
+ len = rgNvicLens[i];
+ PRINTK("interrupt %s register, base address: %p, size: 0x%x\n", strRgs[i], base, len);
+ len = (len >> 2); /* 2: Gets the next register offset */
+ for (j = 0; j < len; j++) {
+ PRINTK("0x%x ", *(base + j));
+ if ((j != 0) && ((j % 16) == 0)) { /* 16: print wrap line */
+ PRINTK("\n");
+ }
+ }
+ PRINTK("\n");
+ }
+}
+
+STATIC VOID OsExcTypeInfo(const ExcInfo *excInfo)
+{
+ CHAR *phaseStr[] = {"exc in init", "exc in task", "exc in hwi"};
+
+ PRINTK("Type = %d\n", excInfo->type);
+ PRINTK("ThrdPid = %d\n", excInfo->thrdPid);
+ PRINTK("Phase = %s\n", phaseStr[excInfo->phase]);
+ PRINTK("FaultAddr = 0x%x\n", excInfo->faultAddr);
+}
+
+STATIC VOID OsExcCurTaskInfo(const ExcInfo *excInfo)
+{
+ PRINTK("Current task info:\n");
+ if (excInfo->phase == OS_EXC_IN_TASK) {
+ LosTaskCB *taskCB = OS_TCB_FROM_TID(LOS_CurTaskIDGet());
+ PRINTK("Task name = %s\n", taskCB->taskName);
+ PRINTK("Task ID = %d\n", taskCB->taskID);
+ PRINTK("Task SP = %p\n", taskCB->stackPointer);
+ PRINTK("Task ST = 0x%x\n", taskCB->topOfStack);
+ PRINTK("Task SS = 0x%x\n", taskCB->stackSize);
+ } else if (excInfo->phase == OS_EXC_IN_HWI) {
+ PRINTK("Exception occur in interrupt phase!\n");
+ } else {
+ PRINTK("Exception occur in system init phase!\n");
+ }
+}
+
+STATIC VOID OsExcRegInfo(const ExcInfo *excInfo)
+{
+ PRINTK("Exception reg dump:\n");
+ PRINTK("PC = 0x%x\n", excInfo->context->uwPC);
+ PRINTK("LR = 0x%x\n", excInfo->context->uwLR);
+ PRINTK("SP = 0x%x\n", excInfo->context->uwSP);
+ PRINTK("R0 = 0x%x\n", excInfo->context->uwR0);
+ PRINTK("R1 = 0x%x\n", excInfo->context->uwR1);
+ PRINTK("R2 = 0x%x\n", excInfo->context->uwR2);
+ PRINTK("R3 = 0x%x\n", excInfo->context->uwR3);
+ PRINTK("R4 = 0x%x\n", excInfo->context->uwR4);
+ PRINTK("R5 = 0x%x\n", excInfo->context->uwR5);
+ PRINTK("R6 = 0x%x\n", excInfo->context->uwR6);
+ PRINTK("R7 = 0x%x\n", excInfo->context->uwR7);
+ PRINTK("R8 = 0x%x\n", excInfo->context->uwR8);
+ PRINTK("R9 = 0x%x\n", excInfo->context->uwR9);
+ PRINTK("R10 = 0x%x\n", excInfo->context->uwR10);
+ PRINTK("R11 = 0x%x\n", excInfo->context->uwR11);
+ PRINTK("R12 = 0x%x\n", excInfo->context->uwR12);
+ PRINTK("PriMask = 0x%x\n", excInfo->context->uwPriMask);
+ PRINTK("xPSR = 0x%x\n", excInfo->context->uwxPSR);
+}
+
+#if (LOSCFG_KERNEL_BACKTRACE == 1)
+STATIC VOID OsExcBackTraceInfo(const ExcInfo *excInfo)
+{
+ UINTPTR LR[LOSCFG_BACKTRACE_DEPTH] = {0};
+ UINT32 index;
+
+ OsBackTraceHookCall(LR, LOSCFG_BACKTRACE_DEPTH, 0, excInfo->context->uwSP);
+
+ PRINTK("----- backtrace start -----\n");
+ for (index = 0; index < LOSCFG_BACKTRACE_DEPTH; index++) {
+ if (LR[index] == 0) {
+ break;
+ }
+ PRINTK("backtrace %d -- lr = 0x%x\n", index, LR[index]);
+ }
+ PRINTK("----- backtrace end -----\n");
+}
+#endif
+
+STATIC VOID OsExcMemPoolCheckInfo(VOID)
+{
+ PRINTK("\r\nmemory pools check:\n");
+#if (LOSCFG_PLATFORM_EXC == 1)
+ MemInfoCB memExcInfo[OS_SYS_MEM_NUM];
+ UINT32 errCnt;
+ UINT32 i;
+
+ (VOID)memset_s(memExcInfo, sizeof(memExcInfo), 0, sizeof(memExcInfo));
+
+ errCnt = OsMemExcInfoGet(OS_SYS_MEM_NUM, memExcInfo);
+ if (errCnt < OS_SYS_MEM_NUM) {
+ errCnt += OsMemboxExcInfoGet(OS_SYS_MEM_NUM - errCnt, memExcInfo + errCnt);
+ }
+
+ if (errCnt == 0) {
+ PRINTK("all memory pool check passed!\n");
+ return;
+ }
+
+ for (i = 0; i < errCnt; i++) {
+ PRINTK("pool num = %d\n", i);
+ PRINTK("pool type = %d\n", memExcInfo[i].type);
+ PRINTK("pool addr = 0x%x\n", memExcInfo[i].startAddr);
+ PRINTK("pool size = 0x%x\n", memExcInfo[i].size);
+ PRINTK("pool free = 0x%x\n", memExcInfo[i].free);
+ PRINTK("pool blkNum = %d\n", memExcInfo[i].blockSize);
+ PRINTK("pool error node addr = 0x%x\n", memExcInfo[i].errorAddr);
+ PRINTK("pool error node len = 0x%x\n", memExcInfo[i].errorLen);
+ PRINTK("pool error node owner = %d\n", memExcInfo[i].errorOwner);
+ }
+#endif
+ UINT32 ret = LOS_MemIntegrityCheck(LOSCFG_SYS_HEAP_ADDR);
+ if (ret == LOS_OK) {
+ PRINTK("system heap memcheck over, all passed!\n");
+ }
+
+ PRINTK("memory pool check end!\n");
+}
+#endif
+
+STATIC VOID OsExcInfoDisplay(const ExcInfo *excInfo)
+{
+#if (LOSCFG_KERNEL_PRINTF != 0)
+ PRINTK("*************Exception Information**************\n");
+ OsExcTypeInfo(excInfo);
+ OsExcCurTaskInfo(excInfo);
+ OsExcRegInfo(excInfo);
+#if (LOSCFG_KERNEL_BACKTRACE == 1)
+ OsExcBackTraceInfo(excInfo);
+#endif
+ OsGetAllTskInfo();
+ OsExcNvicDump();
+ OsExcMemPoolCheckInfo();
+#endif
+}
+
+LITE_OS_SEC_TEXT_INIT VOID HalExcHandleEntry(UINT32 excType, UINT32 faultAddr, UINT32 pid, EXC_CONTEXT_S *excBufAddr)
+{
+ UINT16 tmpFlag = (excType >> 16) & OS_NULL_SHORT; /* 16: Get Exception Type */
+ g_intCount++;
+ g_excInfo.nestCnt++;
+
+ g_excInfo.type = excType & OS_NULL_SHORT;
+
+ if (tmpFlag & OS_EXC_FLAG_FAULTADDR_VALID) {
+ g_excInfo.faultAddr = faultAddr;
+ } else {
+ g_excInfo.faultAddr = OS_EXC_IMPRECISE_ACCESS_ADDR;
+ }
+ if (g_losTask.runTask != NULL) {
+ if (tmpFlag & OS_EXC_FLAG_IN_HWI) {
+ g_excInfo.phase = OS_EXC_IN_HWI;
+ g_excInfo.thrdPid = pid;
+ } else {
+ g_excInfo.phase = OS_EXC_IN_TASK;
+ g_excInfo.thrdPid = g_losTask.runTask->taskID;
+ }
+ } else {
+ g_excInfo.phase = OS_EXC_IN_INIT;
+ g_excInfo.thrdPid = OS_NULL_INT;
+ }
+ if (excType & OS_EXC_FLAG_NO_FLOAT) {
+ g_excInfo.context = (EXC_CONTEXT_S *)((CHAR *)excBufAddr - LOS_OFF_SET_OF(EXC_CONTEXT_S, uwR4));
+ } else {
+ g_excInfo.context = excBufAddr;
+ }
+
+ OsDoExcHook(EXC_INTERRUPT);
+ OsExcInfoDisplay(&g_excInfo);
+ ArchSysExit();
+}
+
+/* ****************************************************************************
+ Function : HalHwiInit
+ Description : initialization of the hardware interrupt
+ Input : None
+ Output : None
+ Return : None
+ **************************************************************************** */
+LITE_OS_SEC_TEXT_INIT VOID HalHwiInit(VOID)
+{
+#if (LOSCFG_USE_SYSTEM_DEFINED_INTERRUPT == 1)
+ UINT32 index;
+ g_hwiForm[0] = 0; /* [0] Top of Stack */
+ g_hwiForm[1] = 0; /* [1] reset */
+ for (index = DEF_HANDLER_START_INDEX; index < OS_VECTOR_CNT; index++) {
+ g_hwiForm[index] = (HWI_PROC_FUNC)HalHwiDefaultHandler;
+ }
+ /* Exception handler register */
+ g_hwiForm[NonMaskableInt_IRQn + OS_SYS_VECTOR_CNT] = HalExcNMI;
+ g_hwiForm[HARDFAULT_IRQN + OS_SYS_VECTOR_CNT] = HalExcHardFault;
+ g_hwiForm[MemoryManagement_IRQn + OS_SYS_VECTOR_CNT] = HalExcMemFault;
+ g_hwiForm[BusFault_IRQn + OS_SYS_VECTOR_CNT] = HalExcBusFault;
+ g_hwiForm[UsageFault_IRQn + OS_SYS_VECTOR_CNT] = HalExcUsageFault;
+ g_hwiForm[SVCall_IRQn + OS_SYS_VECTOR_CNT] = HalSVCHandler;
+ g_hwiForm[PendSV_IRQn + OS_SYS_VECTOR_CNT] = HalPendSV;
+ g_hwiForm[SysTick_IRQn + OS_SYS_VECTOR_CNT] = OsTickHandler;
+
+ /* Interrupt vector table location */
+ SCB->VTOR = (UINT32)(UINTPTR)g_hwiForm;
+#endif
+#if (__CORTEX_M >= 0x03U) /* only for Cortex-M3 and above */
+ NVIC_SetPriorityGrouping(OS_NVIC_AIRCR_PRIGROUP);
+#endif
+
+ /* Enable USGFAULT, BUSFAULT, MEMFAULT */
+ *(volatile UINT32 *)OS_NVIC_SHCSR |= (USGFAULT | BUSFAULT | MEMFAULT);
+
+ /* Enable DIV 0 and unaligned exception */
+#ifdef LOSCFG_ARCH_UNALIGNED_EXC
+ *(volatile UINT32 *)OS_NVIC_CCR |= (DIV0FAULT | UNALIGNFAULT);
+#else
+ *(volatile UINT32 *)OS_NVIC_CCR |= (DIV0FAULT);
+#endif
+
+ return;
+}
+
diff --git a/arch/arm/cortex-m55/gcc/NTZ/los_timer.c b/arch/arm/cortex-m55/gcc/NTZ/los_timer.c
new file mode 100755
index 00000000..efa2b4d4
--- /dev/null
+++ b/arch/arm/cortex-m55/gcc/NTZ/los_timer.c
@@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 2022-2022 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "los_timer.h"
+#include "los_config.h"
+#include "los_tick.h"
+#include "los_arch_interrupt.h"
+#include "los_debug.h"
+
+STATIC UINT32 SysTickStart(HWI_PROC_FUNC handler);
+STATIC VOID SysTickReload(UINT64 nextResponseTime);
+STATIC UINT64 SysTickCycleGet(UINT32 *period);
+STATIC VOID SysTickLock(VOID);
+STATIC VOID SysTickUnlock(VOID);
+
+STATIC ArchTickTimer g_archTickTimer = {
+ .freq = 0,
+ .irqNum = SysTick_IRQn,
+ .init = SysTickStart,
+ .getCycle = SysTickCycleGet,
+ .reload = SysTickReload,
+ .lock = SysTickLock,
+ .unlock = SysTickUnlock,
+ .tickHandler = NULL,
+};
+
+STATIC UINT32 SysTickStart(HWI_PROC_FUNC handler)
+{
+ UINT32 ret;
+ ArchTickTimer *tick = &g_archTickTimer;
+
+ tick->freq = OS_SYS_CLOCK;
+
+#if (LOSCFG_USE_SYSTEM_DEFINED_INTERRUPT == 1)
+#if (LOSCFG_PLATFORM_HWI_WITH_ARG == 1)
+ OsSetVector(tick->irqNum, handler, NULL);
+#else
+ OsSetVector(tick->irqNum, handler);
+#endif
+#endif
+
+ ret = SysTick_Config(LOSCFG_BASE_CORE_TICK_RESPONSE_MAX);
+ if (ret == 1) {
+ return LOS_ERRNO_TICK_PER_SEC_TOO_SMALL;
+ }
+
+ return LOS_OK;
+}
+
+STATIC VOID SysTickReload(UINT64 nextResponseTime)
+{
+ SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk;
+ SysTick->LOAD = (UINT32)(nextResponseTime - 1UL); /* set reload register */
+ SysTick->VAL = 0UL; /* Load the SysTick Counter Value */
+ NVIC_ClearPendingIRQ(SysTick_IRQn);
+ SysTick->CTRL |= SysTick_CTRL_ENABLE_Msk;
+}
+
+STATIC UINT64 SysTickCycleGet(UINT32 *period)
+{
+ UINT32 hwCycle = 0;
+ UINT32 intSave = LOS_IntLock();
+ UINT32 val = SysTick->VAL;
+ *period = SysTick->LOAD;
+ if (val != 0) {
+ hwCycle = *period - val;
+ }
+ LOS_IntRestore(intSave);
+ return (UINT64)hwCycle;
+}
+
+STATIC VOID SysTickLock(VOID)
+{
+ SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk;
+}
+
+STATIC VOID SysTickUnlock(VOID)
+{
+ SysTick->CTRL |= SysTick_CTRL_ENABLE_Msk;
+}
+
+ArchTickTimer *ArchSysTickTimerGet(VOID)
+{
+ return &g_archTickTimer;
+}
+
+UINT32 ArchEnterSleep(VOID)
+{
+ __DSB();
+ __WFI();
+ __ISB();
+
+ return LOS_OK;
+}