Add RAM/ROM memory statistics to system stats structure

Internal RAM / ROM memory size and start address of target can be
fetched using `mbed_stats_sys_get()` API.

Author: Deepika

platform/mbed_stats.c

@@ -131,6 +131,35 @@ void mbed_stats_sys_get(mbed_stats_sys_t *stats)
 
 #if defined(MBED_SYS_STATS_ENABLED)
     stats->os_version = MBED_VERSION;
+    stats->ram_start[0] = MBED_RAM_START;
+    stats->ram_size[0] = MBED_RAM_SIZE;
+    stats->rom_start[0] = MBED_ROM_START;
+    stats->rom_size[0] = MBED_ROM_SIZE;
+#if defined(MBED_RAM1_START) && defined(MBED_RAM1_SIZE)
+    stats->ram_start[1] = MBED_RAM1_START;
+    stats->ram_size[1] = MBED_RAM1_SIZE;
+#endif
+#if defined(MBED_RAM2_START) && defined(MBED_RAM2_SIZE)
+    stats->ram_start[2] = MBED_RAM2_START;
+    stats->ram_size[2] = MBED_RAM2_SIZE;
+#endif
+#if defined(MBED_RAM3_START) && defined(MBED_RAM3_SIZE)
+    stats->ram_start[3] = MBED_RAM3_START;
+    stats->ram_size[3] = MBED_RAM3_SIZE;
+#endif
+#if defined(MBED_ROM1_START) && defined(MBED_ROM1_SIZE)
+    stats->rom_start[1] = MBED_ROM1_START;
+    stats->rom_size[1] = MBED_ROM1_SIZE;
+#endif
+#if defined(MBED_ROM2_START) && defined(MBED_ROM2_SIZE)
+    stats->rom_start[2] = MBED_ROM2_START;
+    stats->rom_size[2] = MBED_ROM2_SIZE;
+#endif
+#if defined(MBED_ROM3_START) && defined(MBED_ROM3_SIZE)
+    stats->rom_start[3] = MBED_ROM3_START;
+    stats->rom_size[3] = MBED_ROM3_SIZE;
+#endif
+
 #if defined(__CORTEX_M)
     stats->cpu_id = SCB->CPUID;
 #endif

platform/mbed_stats.h

@@ -38,6 +38,9 @@ extern "C" {
 #define MBED_THREAD_STATS_ENABLED   1
 #endif
 
+/** Maximum memory regions reported by mbed-os memory statistics */
+#define MBED_MAX_MEM_REGIONS     4
+
 /**
  * struct mbed_stats_heap_t definition
  */
@@ -144,6 +147,10 @@ typedef struct {
     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 */
+    uint32_t ram_start[MBED_MAX_MEM_REGIONS];/**< Start addresses of all internal RAM memories */
+    uint32_t ram_size[MBED_MAX_MEM_REGIONS];/**< Size of all internal RAM memories in target */
+    uint32_t rom_start[MBED_MAX_MEM_REGIONS];/**< Start addresses of all internal ROM memories */
+    uint32_t rom_size[MBED_MAX_MEM_REGIONS];/**< Size of all internal ROM memories in target */
 } mbed_stats_sys_t;
 
 /**