diff --git a/include/bl31/bl31.h b/include/bl31/bl31.h
index e77c554..744dcc2 100644
--- a/include/bl31/bl31.h
+++ b/include/bl31/bl31.h
@@ -41,22 +41,21 @@
 /******************************************
  * Forward declarations
  *****************************************/
-struct meminfo;
 struct entry_point_info;
 struct bl31_parms;
 
 /*******************************************************************************
  * Function prototypes
  ******************************************************************************/
-extern void bl31_arch_setup(void);
-extern void bl31_next_el_arch_setup(uint32_t security_state);
-extern void bl31_set_next_image_type(uint32_t type);
-extern uint32_t bl31_get_next_image_type(void);
-extern void bl31_prepare_next_image_entry();
-extern struct entry_point_info *bl31_get_next_image_info(uint32_t type);
-extern void bl31_early_platform_setup(struct bl31_params *from_bl2,
-					void *plat_params_from_bl2);
-extern void bl31_platform_setup(void);
-extern void bl31_register_bl32_init(int32_t (*)(void));
+void bl31_arch_setup(void);
+void bl31_next_el_arch_setup(uint32_t security_state);
+void bl31_set_next_image_type(uint32_t type);
+uint32_t bl31_get_next_image_type(void);
+void bl31_prepare_next_image_entry();
+struct entry_point_info *bl31_get_next_image_info(uint32_t type);
+void bl31_early_platform_setup(struct bl31_params *from_bl2,
+				void *plat_params_from_bl2);
+void bl31_platform_setup(void);
+void bl31_register_bl32_init(int32_t (*)(void));
 
 #endif /* __BL31_H__ */
diff --git a/include/bl31/context_mgmt.h b/include/bl31/context_mgmt.h
index ad9d785..ce4f7a8 100644
--- a/include/bl31/context_mgmt.h
+++ b/include/bl31/context_mgmt.h
@@ -36,24 +36,24 @@
 /*******************************************************************************
  * Function & variable prototypes
  ******************************************************************************/
-extern void cm_init(void);
-extern void *cm_get_context(uint64_t mpidr, uint32_t security_state);
-extern void cm_set_context(uint64_t mpidr,
-			   void *context,
-			   uint32_t security_state);
-extern void cm_el3_sysregs_context_save(uint32_t security_state);
-extern void cm_el3_sysregs_context_restore(uint32_t security_state);
-extern void cm_el1_sysregs_context_save(uint32_t security_state);
-extern void cm_el1_sysregs_context_restore(uint32_t security_state);
-extern void cm_set_el3_eret_context(uint32_t security_state, uint64_t entrypoint,
-		uint32_t spsr, uint32_t scr);
-extern void cm_set_elr_el3(uint32_t security_state, uint64_t entrypoint);
-extern void cm_write_scr_el3_bit(uint32_t security_state,
-				 uint32_t bit_pos,
-				 uint32_t value);
-extern void cm_set_next_eret_context(uint32_t security_state);
-extern void cm_init_pcpu_ptr_cache();
-extern void cm_set_pcpu_ptr_cache(const void *pcpu_ptr);
-extern void *cm_get_pcpu_ptr_cache(void);
-extern uint32_t cm_get_scr_el3(uint32_t security_state);
+void cm_init(void);
+void *cm_get_context(uint64_t mpidr, uint32_t security_state);
+void cm_set_context(uint64_t mpidr,
+		    void *context,
+		    uint32_t security_state);
+void cm_el3_sysregs_context_save(uint32_t security_state);
+void cm_el3_sysregs_context_restore(uint32_t security_state);
+void cm_el1_sysregs_context_save(uint32_t security_state);
+void cm_el1_sysregs_context_restore(uint32_t security_state);
+void cm_set_el3_eret_context(uint32_t security_state, uint64_t entrypoint,
+			     uint32_t spsr, uint32_t scr);
+void cm_set_elr_el3(uint32_t security_state, uint64_t entrypoint);
+void cm_write_scr_el3_bit(uint32_t security_state,
+			  uint32_t bit_pos,
+			  uint32_t value);
+void cm_set_next_eret_context(uint32_t security_state);
+void cm_init_pcpu_ptr_cache();
+void cm_set_pcpu_ptr_cache(const void *pcpu_ptr);
+void *cm_get_pcpu_ptr_cache(void);
+uint32_t cm_get_scr_el3(uint32_t security_state);
 #endif /* __CM_H__ */
diff --git a/include/bl31/interrupt_mgmt.h b/include/bl31/interrupt_mgmt.h
index 0b24f39..3a2c00c 100644
--- a/include/bl31/interrupt_mgmt.h
+++ b/include/bl31/interrupt_mgmt.h
@@ -117,12 +117,12 @@
 /*******************************************************************************
  * Function & variable prototypes
  ******************************************************************************/
-extern uint32_t get_scr_el3_from_routing_model(uint32_t security_state);
-extern int32_t set_routing_model(uint32_t type, uint32_t flags);
-extern int32_t register_interrupt_type_handler(uint32_t type,
-					       interrupt_type_handler_t handler,
-					       uint32_t flags);
-extern interrupt_type_handler_t get_interrupt_type_handler(uint32_t interrupt_type);
+uint32_t get_scr_el3_from_routing_model(uint32_t security_state);
+int32_t set_routing_model(uint32_t type, uint32_t flags);
+int32_t register_interrupt_type_handler(uint32_t type,
+					interrupt_type_handler_t handler,
+					uint32_t flags);
+interrupt_type_handler_t get_interrupt_type_handler(uint32_t interrupt_type);
 
 #endif /*__ASSEMBLY__*/
 #endif /* __INTERRUPT_MGMT_H__ */
diff --git a/include/bl31/runtime_svc.h b/include/bl31/runtime_svc.h
index 66562e1..d7d88d4 100644
--- a/include/bl31/runtime_svc.h
+++ b/include/bl31/runtime_svc.h
@@ -264,10 +264,10 @@
 /*******************************************************************************
  * Function & variable prototypes
  ******************************************************************************/
-extern void runtime_svc_init();
+void runtime_svc_init();
 extern uint64_t __RT_SVC_DESCS_START__;
 extern uint64_t __RT_SVC_DESCS_END__;
-extern uint64_t get_crash_stack(uint64_t mpidr);
-extern void runtime_exceptions(void);
+uint64_t get_crash_stack(uint64_t mpidr);
+void runtime_exceptions(void);
 #endif /*__ASSEMBLY__*/
 #endif /* __RUNTIME_SVC_H__ */
diff --git a/include/bl31/services/psci.h b/include/bl31/services/psci.h
index b6e272c..887c4ce 100644
--- a/include/bl31/services/psci.h
+++ b/include/bl31/services/psci.h
@@ -178,36 +178,36 @@
 /*******************************************************************************
  * Function & Data prototypes
  ******************************************************************************/
-extern unsigned int psci_version(void);
-extern int __psci_cpu_suspend(unsigned int, unsigned long, unsigned long);
-extern int __psci_cpu_off(void);
-extern int psci_affinity_info(unsigned long, unsigned int);
-extern int psci_migrate(unsigned int);
-extern unsigned int psci_migrate_info_type(void);
-extern unsigned long psci_migrate_info_up_cpu(void);
-extern void psci_system_off(void);
-extern void psci_system_reset(void);
-extern int psci_cpu_on(unsigned long,
-		       unsigned long,
-		       unsigned long);
-extern void __dead2 psci_power_down_wfi(void);
-extern void psci_aff_on_finish_entry(void);
-extern void psci_aff_suspend_finish_entry(void);
-extern void psci_register_spd_pm_hook(const spd_pm_ops_t *);
-extern int psci_get_suspend_stateid(unsigned long mpidr);
-extern int psci_get_suspend_afflvl(unsigned long mpidr);
+unsigned int psci_version(void);
+int __psci_cpu_suspend(unsigned int, unsigned long, unsigned long);
+int __psci_cpu_off(void);
+int psci_affinity_info(unsigned long, unsigned int);
+int psci_migrate(unsigned int);
+unsigned int psci_migrate_info_type(void);
+unsigned long psci_migrate_info_up_cpu(void);
+void psci_system_off(void);
+void psci_system_reset(void);
+int psci_cpu_on(unsigned long,
+		unsigned long,
+		unsigned long);
+void __dead2 psci_power_down_wfi(void);
+void psci_aff_on_finish_entry(void);
+void psci_aff_suspend_finish_entry(void);
+void psci_register_spd_pm_hook(const spd_pm_ops_t *);
+int psci_get_suspend_stateid(unsigned long mpidr);
+int psci_get_suspend_afflvl(unsigned long mpidr);
 
-extern uint64_t psci_smc_handler(uint32_t smc_fid,
-				 uint64_t x1,
-				 uint64_t x2,
-				 uint64_t x3,
-				 uint64_t x4,
-				 void *cookie,
-				 void *handle,
-				 uint64_t flags);
+uint64_t psci_smc_handler(uint32_t smc_fid,
+			  uint64_t x1,
+			  uint64_t x2,
+			  uint64_t x3,
+			  uint64_t x4,
+			  void *cookie,
+			  void *handle,
+			  uint64_t flags);
 
 /* PSCI setup function */
-extern int32_t psci_setup(void);
+int32_t psci_setup(void);
 
 
 #endif /*__ASSEMBLY__*/