diff --git a/arch/arm/src/armv7-m/Kconfig b/arch/arm/src/armv7-m/Kconfig
index b4fd21f5ec..a9274b28d0 100644
--- a/arch/arm/src/armv7-m/Kconfig
+++ b/arch/arm/src/armv7-m/Kconfig
@@ -107,7 +107,7 @@ config ARMV7M_OABI_TOOLCHAIN
 		arm-nuttx-elf- vs. arm-nuttx-eabi-
 
 config ARMV7M_STACKCHECK
-	bool "Stack for stack overflow on each function call"
+	bool "Check for stack overflow on each function call"
 	default n
 	depends on ARCH_CHIP_STM32
 	---help---
diff --git a/arch/arm/src/stm32/Kconfig b/arch/arm/src/stm32/Kconfig
index ebf4d51f31..38be09791c 100644
--- a/arch/arm/src/stm32/Kconfig
+++ b/arch/arm/src/stm32/Kconfig
@@ -1650,6 +1650,13 @@ config STM32_I2C
 config STM32_CAN
 	bool
 
+config STM32_NOEXT_VECTORS
+	bool "Disable the ARMv7-M EXT vectors"
+	default n
+	---help---
+		Sometimes you may not need any Vector support beyond SysTick
+		and wish to save memory. This applies only to ARMv7-M architectures.
+
 menu "Alternate Pin Mapping"
 
 choice
diff --git a/arch/arm/src/stm32/chip/stm32f10xxx_memorymap.h b/arch/arm/src/stm32/chip/stm32f10xxx_memorymap.h
index 217836999b..9a1cbcd5fb 100644
--- a/arch/arm/src/stm32/chip/stm32f10xxx_memorymap.h
+++ b/arch/arm/src/stm32/chip/stm32f10xxx_memorymap.h
@@ -51,6 +51,15 @@
 #define STM32_REGION_MASK    0xf0000000
 #define STM32_IS_SRAM(a)     ((((uint32_t)(a)) & STM32_REGION_MASK) == STM32_SRAM_BASE)
 
+/* System Memory Addresses **********************************************************/
+
+#define STM32_SYSMEM_UID     0x1ffff7e8     /* The 96-bit unique device identifier */
+#define STM32_SYSMEM_FSIZE   0x1ffff7e0     /* This bitfield indicates the size of
+                                             * the device Flash memory expressed
+                                             * in Kbytes. Example: 0x0080 = 128
+                                             * Kbytes
+                                             */
+
 /* Register Base Address ************************************************************/
 
 /* APB1 bus */
diff --git a/arch/arm/src/stm32/chip/stm32f20xxx_memorymap.h b/arch/arm/src/stm32/chip/stm32f20xxx_memorymap.h
index 777b9595fe..9c64929a0b 100644
--- a/arch/arm/src/stm32/chip/stm32f20xxx_memorymap.h
+++ b/arch/arm/src/stm32/chip/stm32f20xxx_memorymap.h
@@ -72,6 +72,15 @@
 #define STM32_OPTION_BASE    0x1fffc000     /* 0x1fffc000-0x1fffc007: Option bytes */
                                             /* 0x1fffc008-0x1fffffff: Reserved */
 
+/* System Memory Addresses **********************************************************/
+
+#define STM32_SYSMEM_UID     0x1fff7a10     /* The 96-bit unique device identifier */
+#define STM32_SYSMEM_FSIZE   0x1fff7a22     /* This bitfield indicates the size of
+                                             * the device Flash memory expressed in
+                                             * Kbytes. Example: 0x0400 corresponds
+                                             * to 1024 Kbytes.
+                                             */
+
 /* SRAM Base Addresses **************************************************************/
 
                                             /* 0x20000000-0x2001bfff: 112Kb aliased by bit-banding */
diff --git a/arch/arm/src/stm32/chip/stm32f30xxx_memorymap.h b/arch/arm/src/stm32/chip/stm32f30xxx_memorymap.h
index dc291ad296..c8cb8f03e9 100644
--- a/arch/arm/src/stm32/chip/stm32f30xxx_memorymap.h
+++ b/arch/arm/src/stm32/chip/stm32f30xxx_memorymap.h
@@ -64,6 +64,15 @@
 #define STM32_OPTION_BASE    0x1ffff800     /* 0x1fffc000-0x1fffc007: Option bytes */
                                             /* 0x1fffc008-0x1fffffff: Reserved */
 
+/* System Memory Addresses **********************************************************/
+
+#define STM32_SYSMEM_UID     0x1ffff7ac     /* The 96-bit unique device identifier */
+#define STM32_SYSMEM_FSIZE   0x1ffff7cc     /* This bitfield indicates the size of
+                                             * the device Flash memory expressed in
+                                             * Kbytes.  Example: 0x040 corresponds
+                                             * to 64 Kbytes
+                                             */
+
 /* Peripheral Base Addresses ********************************************************/
 
 #define STM32_APB1_BASE      0x40000000     /* 0x40000000-0x40009fff: APB1 */
diff --git a/arch/arm/src/stm32/chip/stm32f37xxx_memorymap.h b/arch/arm/src/stm32/chip/stm32f37xxx_memorymap.h
index a745cb2de0..cf01966f2d 100644
--- a/arch/arm/src/stm32/chip/stm32f37xxx_memorymap.h
+++ b/arch/arm/src/stm32/chip/stm32f37xxx_memorymap.h
@@ -63,6 +63,15 @@
 #define STM32_OPTION_BASE    0x1ffff800     /* 0x1fffc000-0x1fffc007: Option bytes */
                                             /* 0x1fffc008-0x1fffffff: Reserved */
 
+/* System Memory Addresses **********************************************************/
+
+#define STM32_SYSMEM_UID     0x1ffff7ac     /* The 96-bit unique device identifier */
+#define STM32_SYSMEM_FSIZE   0x1ffff7cc     /* This bitfield indicates the size of
+                                             * the device Flash memory expressed in
+                                             * Kbytes.  Example: 0x040 corresponds
+                                             * to 64 Kbytes
+                                             */
+
 /* Peripheral Base Addresses ********************************************************/
 
 #define STM32_APB1_BASE      0x40000000     /* 0x40000000-0x40009fff: APB1 */
@@ -146,4 +155,3 @@
 #define STM32_DEBUGMCU_BASE 0xe0042000
 
 #endif /* __ARCH_ARM_SRC_STM32_CHIP_STM32F37XXX_MEMORYMAP_H */
-
diff --git a/arch/arm/src/stm32/chip/stm32f40xxx_memorymap.h b/arch/arm/src/stm32/chip/stm32f40xxx_memorymap.h
index 3e4c9f6a0c..12fadff5f1 100644
--- a/arch/arm/src/stm32/chip/stm32f40xxx_memorymap.h
+++ b/arch/arm/src/stm32/chip/stm32f40xxx_memorymap.h
@@ -72,6 +72,15 @@
 #define STM32_OPTION_BASE    0x1fffc000     /* 0x1fffc000-0x1fffc007: Option bytes */
                                             /* 0x1fffc008-0x1fffffff: Reserved */
 
+/* System Memory Addresses **********************************************************/
+
+#define STM32_SYSMEM_UID     0x1fff7a10     /* The 96-bit unique device identifier */
+#define STM32_SYSMEM_FSIZE   0x1fff7a22     /* This bitfield indicates the size of
+                                             * the device Flash memory expressed in
+                                             * Kbytes. Example: 0x0400 corresponds
+                                             * to 1024 Kbytes.
+                                             */
+
 /* SRAM Base Addresses **************************************************************/
 
                                             /* 0x20000000-0x2001bfff: 112Kb aliased by bit-banding */
diff --git a/arch/arm/src/stm32/stm32_vectors.S b/arch/arm/src/stm32/stm32_vectors.S
index 03be1e7c20..cf2d4e449c 100644
--- a/arch/arm/src/stm32/stm32_vectors.S
+++ b/arch/arm/src/stm32/stm32_vectors.S
@@ -163,6 +163,7 @@ _vectors:
 
 /* External Interrupts */
 
+#if !defined(CONFIG_STM32_NOEXT_VECTORS)
 #undef VECTOR
 #define VECTOR(l,i) .word l
 
@@ -184,6 +185,7 @@ _vectors:
 #else
 #  error "No vectors for STM32 chip"
 #endif
+#endif /* CONFIG_STM32_NOEXT_VECTORS */
 	.size	_vectors, .-_vectors
 
 /************************************************************************************
@@ -205,6 +207,8 @@ handlers:
 	HANDLER	stm32_pendsv, STM32_IRQ_PENDSV			/* Vector 14: Penable system service request */
 	HANDLER	stm32_systick, STM32_IRQ_SYSTICK		/* Vector 15: System tick */
 
+#if !defined(CONFIG_STM32_NOEXT_VECTORS)
+
 #undef VECTOR
 #define VECTOR(l,i) HANDLER l, i
 
@@ -227,6 +231,8 @@ handlers:
 #  error "No handlers for STM32 chip"
 #endif
 
+#endif /* CONFIG_STM32_NOEXT_VECTORS */
+
 /* Common IRQ handling logic.  On entry here, the return stack is on either
  * the PSP or the MSP and looks like the following:
  *