diff --git a/plat/arm/board/sgi575/include/platform_def.h b/plat/arm/board/sgi575/include/platform_def.h
index 25d24c5..95986cf 100644
--- a/plat/arm/board/sgi575/include/platform_def.h
+++ b/plat/arm/board/sgi575/include/platform_def.h
@@ -37,4 +37,9 @@
 #define PLAT_VIRT_ADDR_SPACE_SIZE	(1ULL << 32)
 #endif
 
+/* GIC related constants */
+#define PLAT_ARM_GICD_BASE		UL(0x30000000)
+#define PLAT_ARM_GICC_BASE		UL(0x2C000000)
+#define PLAT_ARM_GICR_BASE		UL(0x300C0000)
+
 #endif /* PLATFORM_DEF_H */