diff --git a/arch/arm/src/armv7-a/sctlr.h b/arch/arm/src/armv7-a/sctlr.h
index 10511156a4..6d3fce9526 100644
--- a/arch/arm/src/armv7-a/sctlr.h
+++ b/arch/arm/src/armv7-a/sctlr.h
@@ -167,7 +167,19 @@
 /* TODO: To be provided */
 
 /* Secure Configuration Register (SCR) */
-/* TODO: To be provided */
+
+#define SCR_NS                   (1 << 0)  /* Bit 0: Non-secure */
+#define SCR_IRQ                  (1 << 1)  /* Bit 1: IRQs taken in Monitor mode */
+#define SCR_FIQ                  (1 << 2)  /* Bit 2: FIQs taken in Monitor mode */
+#define SCR_EA                   (1 << 3)  /* Bit 3: External aborts taken in Monitor mode */
+#define SCR_FW                   (1 << 4)  /* Bit 4: F bit writable */
+#define SCR_AW                   (1 << 5)  /* Bit 5: A bit writable */
+#define SCR_NET                  (1 << 6)  /* Bit 6: Not Early Termination */
+#define SCR_SCD                  (1 << 7)  /* Bit 7: Secure Monitor Call disable */
+#define SCR_HCE                  (1 << 8)  /* Bit 8: Hyp Call enable */
+#define SCR_SIF                  (1 << 9)  /* Bit 9: Secure state instruction fetches from
+                                            *        Non-secure memory are not permitted */
+                                           /* Bits 10-31: Reserved */
 
 /* Secure Debug Enable Register (SDER) */
 /* TODO: To be provided */