OS version added + CPUID for cortex-M only

CPUID base register is available for Cortex-M processors only.
Cortex-A devices have Main ID Register, which can be used in future to
get processor info.

TESTS/mbed_platform/stats_sys/main.cpp

@@ -32,7 +32,14 @@ void test_sys_info()
     mbed_stats_sys_t stats;
     mbed_stats_sys_get(&stats);
 
+#if defined(MBED_VERSION)
+    TEST_ASSERT_NOT_EQUAL(0, stats.os_version);
+#endif
+
+#if defined(__CORTEX_M)
     TEST_ASSERT_NOT_EQUAL(0, stats.cpu_id);
+#endif
+
 #if defined(__IAR_SYSTEMS_ICC__)
     TEST_ASSERT_EQUAL(IAR, stats.compiler_id);
 #elif defined(__CC_ARM)

platform/mbed_stats.c

@@ -106,9 +106,12 @@ void mbed_stats_sys_get(mbed_stats_sys_t *stats)
     memset(stats, 0, sizeof(mbed_stats_sys_t));
 
 #if defined(MBED_SYS_STATS_ENABLED)
-
+#if defined(MBED_VERSION)
+    stats->os_version = MBED_VERSION;
+#endif
+#if defined(__CORTEX_M)
     stats->cpu_id = SCB->CPUID;
-
+#endif
 #if defined(__IAR_SYSTEMS_ICC__)
     stats->compiler_id = IAR;
     stats->compiler_version = __VER__;

platform/mbed_stats.h

@@ -118,7 +118,8 @@ typedef enum {
  * struct mbed_stats_sys_t definition
  */
 typedef struct {
-    uint32_t cpu_id;                    /**< CPUID Register data */
+    uint32_t os_version;                /**< Mbed OS Version (Release only) */
+    uint32_t cpu_id;                    /**< CPUID Register data (Cortex-M only supported) */
     mbed_compiler_id_t compiler_id;     /**< Compiler ID \ref mbed_compiler_id_t */
     uint32_t compiler_version;          /**< Compiler version */
 } mbed_stats_sys_t;