diff --git a/components/soc/src/esp32/include/hal/mpu_ll.h b/components/soc/src/esp32/include/hal/mpu_ll.h
index b11e11a7d8..bb849f66a9 100644
--- a/components/soc/src/esp32/include/hal/mpu_ll.h
+++ b/components/soc/src/esp32/include/hal/mpu_ll.h
@@ -22,7 +22,7 @@
 extern "C" {
 #endif
 
-static inline uint32_t cpu_ll_id_to_addr(int id)
+static inline uint32_t mpu_ll_id_to_addr(int id)
 {
     // vpn - id
     // 0x00000000 = 0
diff --git a/components/soc/src/esp32s2/include/hal/mpu_ll.h b/components/soc/src/esp32s2/include/hal/mpu_ll.h
index b11e11a7d8..bb849f66a9 100644
--- a/components/soc/src/esp32s2/include/hal/mpu_ll.h
+++ b/components/soc/src/esp32s2/include/hal/mpu_ll.h
@@ -22,7 +22,7 @@
 extern "C" {
 #endif
 
-static inline uint32_t cpu_ll_id_to_addr(int id)
+static inline uint32_t mpu_ll_id_to_addr(int id)
 {
     // vpn - id
     // 0x00000000 = 0
diff --git a/components/soc/src/hal/mpu_hal.c b/components/soc/src/hal/mpu_hal.c
index b2cae6b76c..8b89f5d597 100644
--- a/components/soc/src/hal/mpu_hal.c
+++ b/components/soc/src/hal/mpu_hal.c
@@ -25,7 +25,7 @@
 
 void mpu_hal_set_region_access(int id, mpu_access_t access)
 {
-    uint32_t addr = cpu_ll_id_to_addr(id);
+    uint32_t addr = mpu_ll_id_to_addr(id);
 
     switch (access)
     {
@@ -48,6 +48,9 @@ void mpu_hal_set_region_access(int id, mpu_access_t access)
         case MPU_REGION_RWX:
             mpu_ll_set_region_rwx(addr);
             break;
+        case MPU_REGION_ILLEGAL:
+            mpu_ll_set_region_illegal(addr);
+            break;
         default:
             break;
     }
diff --git a/components/soc/test/test_mpu.c b/components/soc/test/test_mpu.c
new file mode 100644
index 0000000000..579cd0c703
--- /dev/null
+++ b/components/soc/test/test_mpu.c
@@ -0,0 +1,36 @@
+#include <stdio.h>
+#include <stdbool.h>
+#include "unity.h"
+
+#include "esp_attr.h"
+
+#include "hal/mpu_hal.h"
+
+volatile static int RTC_NOINIT_ATTR access = 0;
+
+static void trigger_illegal_access(void)
+{
+    access = 0;
+    intptr_t addr = 0x60000000;
+    volatile int __attribute__((unused)) val = 0;
+
+    val = *((int*) addr);
+    ++access;
+    TEST_ASSERT_EQUAL(1, access);
+    printf("Sucessfully accessed location %p\r\n", (void*)addr);
+
+    mpu_hal_set_region_access(3, MPU_REGION_ILLEGAL); // 0x60000000
+    ++access;
+
+    val = *((int*) addr); 
+    ++access;
+}
+
+void check_access(void)
+{
+    TEST_ASSERT_EQUAL(2, access);
+}
+
+TEST_CASE_MULTIPLE_STAGES("Can set illegal access regions", "[soc][mpu]",
+        trigger_illegal_access,
+        check_access);
\ No newline at end of file