diff --git a/bl32/tsp/aarch64/tsp_entrypoint.S b/bl32/tsp/aarch64/tsp_entrypoint.S
index 9732ff2..d183dff 100644
--- a/bl32/tsp/aarch64/tsp_entrypoint.S
+++ b/bl32/tsp/aarch64/tsp_entrypoint.S
@@ -177,7 +177,7 @@
 	b	tsp_cpu_off_entry
 	b	tsp_cpu_resume_entry
 	b	tsp_cpu_suspend_entry
-	b	tsp_fiq_entry
+	b	tsp_sel1_intr_entry
 	b	tsp_system_off_entry
 	b	tsp_system_reset_entry
 endfunc tsp_vector_table
@@ -325,13 +325,13 @@
 	restore_args_call_smc
 endfunc tsp_cpu_suspend_entry
 
-	/*---------------------------------------------
+	/*-------------------------------------------------
 	 * This entrypoint is used by the TSPD to pass
-	 * control for handling a pending S-EL1 FIQ.
+	 * control for handling a pending S-EL1 Interrupt.
 	 * 'x0' contains a magic number which indicates
 	 * this. TSPD expects control to be handed back
-	 * at the end of FIQ processing. This is done
-	 * through an SMC. The handover agreement is:
+	 * at the end of interrupt processing. This is
+	 * done through an SMC. The handover agreement is:
 	 *
 	 * 1. PSTATE.DAIF are set upon entry. 'x1' has
 	 *    the ELR_EL3 from the non-secure state.
@@ -343,40 +343,41 @@
 	 * 4. TSP can use 'x0-x18' to enable its C
 	 *    runtime.
 	 * 5. TSP returns to TSPD using an SMC with
-	 *    'x0' = TSP_HANDLED_S_EL1_FIQ
-	 * ---------------------------------------------
+	 *    'x0' = TSP_HANDLED_S_EL1_INTR
+	 * ------------------------------------------------
 	 */
-func	tsp_fiq_entry
+func	tsp_sel1_intr_entry
 #if DEBUG
-	mov	x2, #(TSP_HANDLE_FIQ_AND_RETURN & ~0xffff)
-	movk	x2, #(TSP_HANDLE_FIQ_AND_RETURN &  0xffff)
+	mov	x2, #(TSP_HANDLE_SEL1_INTR_AND_RETURN & ~0xffff)
+	movk	x2, #(TSP_HANDLE_SEL1_INTR_AND_RETURN &  0xffff)
 	cmp	x0, x2
-	b.ne	tsp_fiq_entry_panic
+	b.ne	tsp_sel1_int_entry_panic
 #endif
-	/*---------------------------------------------
+	/*-------------------------------------------------
 	 * Save any previous context needed to perform
 	 * an exception return from S-EL1 e.g. context
-	 * from a previous IRQ. Update statistics and
-	 * handle the FIQ before returning to the TSPD.
+	 * from a previous Non secure Interrupt.
+	 * Update statistics and handle the S-EL1
+	 * interrupt before returning to the TSPD.
 	 * IRQ/FIQs are not enabled since that will
 	 * complicate the implementation. Execution
 	 * will be transferred back to the normal world
 	 * in any case. A non-zero return value from the
-	 * fiq handler is an error.
-	 * ---------------------------------------------
+	 * interrupt handler is an error.
+	 * ------------------------------------------------
 	 */
 	save_eret_context x2 x3
-	bl	tsp_update_sync_fiq_stats
-	bl	tsp_fiq_handler
-	cbnz	x0, tsp_fiq_entry_panic
+	bl	tsp_update_sync_sel1_intr_stats
+	bl	tsp_common_int_handler
+	cbnz	x0, tsp_sel1_int_entry_panic
 	restore_eret_context x2 x3
-	mov	x0, #(TSP_HANDLED_S_EL1_FIQ & ~0xffff)
-	movk	x0, #(TSP_HANDLED_S_EL1_FIQ &  0xffff)
+	mov	x0, #(TSP_HANDLED_S_EL1_INTR & ~0xffff)
+	movk	x0, #(TSP_HANDLED_S_EL1_INTR &  0xffff)
 	smc	#0
 
-tsp_fiq_entry_panic:
-	b	tsp_fiq_entry_panic
-endfunc tsp_fiq_entry
+tsp_sel1_int_entry_panic:
+	b	tsp_sel1_int_entry_panic
+endfunc tsp_sel1_intr_entry
 
 	/*---------------------------------------------
 	 * This entrypoint is used by the TSPD when this
diff --git a/bl32/tsp/aarch64/tsp_exceptions.S b/bl32/tsp/aarch64/tsp_exceptions.S
index 272d94b..d5e089f 100644
--- a/bl32/tsp/aarch64/tsp_exceptions.S
+++ b/bl32/tsp/aarch64/tsp_exceptions.S
@@ -70,6 +70,28 @@
 	add	sp, sp, SCRATCH_REG_SIZE
 	.endm
 
+	/* ----------------------------------------------------
+	 * Common TSP interrupt handling routine
+	 * ----------------------------------------------------
+	 */
+	.macro	handle_tsp_interrupt label
+	/* Enable the SError interrupt */
+	msr	daifclr, #DAIF_ABT_BIT
+
+	save_caller_regs_and_lr
+	bl	tsp_common_int_handler
+	cbz	x0, interrupt_exit_\label
+
+	/*
+	 * This interrupt was not targetted to S-EL1 so send it to
+	 * the monitor and wait for execution to resume.
+	 */
+	smc	#0
+interrupt_exit_\label:
+	restore_caller_regs_and_lr
+	eret
+	.endm
+
 	.globl	tsp_exceptions
 
 	/* -----------------------------------------------------
@@ -120,36 +142,12 @@
 
 	.align	7
 irq_sp_elx:
-	/* Enable the SError interrupt */
-	msr	daifclr, #DAIF_ABT_BIT
-
-	save_caller_regs_and_lr
-	/* We just update some statistics in the handler */
-	bl	tsp_handle_preemption
-	/* Hand over control to the normal world to handle the IRQ */
-	smc	#0
-	/* The resume std smc starts from here */
-	restore_caller_regs_and_lr
-	eret
+	handle_tsp_interrupt irq_sp_elx
 	check_vector_size irq_sp_elx
 
 	.align	7
 fiq_sp_elx:
-	/* Enable the SError interrupt */
-	msr	daifclr, #DAIF_ABT_BIT
-
-	save_caller_regs_and_lr
-	bl	tsp_fiq_handler
-	cbz	x0, fiq_sp_elx_done
-
-	/*
-	 * This FIQ was not targetted to S-EL1 so send it to
-	 * the monitor and wait for execution to resume.
-	 */
-	smc	#0
-fiq_sp_elx_done:
-	restore_caller_regs_and_lr
-	eret
+	handle_tsp_interrupt fiq_sp_elx
 	check_vector_size fiq_sp_elx
 
 	.align	7
diff --git a/bl32/tsp/tsp_interrupt.c b/bl32/tsp/tsp_interrupt.c
index d5379cd..7654d2e 100644
--- a/bl32/tsp/tsp_interrupt.c
+++ b/bl32/tsp/tsp_interrupt.c
@@ -31,38 +31,39 @@
 #include <arch_helpers.h>
 #include <assert.h>
 #include <debug.h>
-#include <gic_v2.h>
 #include <platform.h>
 #include <platform_def.h>
 #include <tsp.h>
 #include "tsp_private.h"
 
 /*******************************************************************************
- * This function updates the TSP statistics for FIQs handled synchronously i.e
- * the ones that have been handed over by the TSPD. It also keeps count of the
- * number of times control was passed back to the TSPD after handling an FIQ.
- * In the future it will be possible that the TSPD hands over an FIQ to the TSP
- * but does not expect it to return execution. This statistic will be useful to
- * distinguish between these two models of synchronous FIQ handling.
- * The 'elr_el3' parameter contains the address of the instruction in normal
- * world where this FIQ was generated.
+ * This function updates the TSP statistics for S-EL1 interrupts handled
+ * synchronously i.e the ones that have been handed over by the TSPD. It also
+ * keeps count of the number of times control was passed back to the TSPD
+ * after handling the interrupt. In the future it will be possible that the
+ * TSPD hands over an S-EL1 interrupt to the TSP but does not expect it to
+ * return execution. This statistic will be useful to distinguish between these
+ * two models of synchronous S-EL1 interrupt handling. The 'elr_el3' parameter
+ * contains the address of the instruction in normal world where this S-EL1
+ * interrupt was generated.
  ******************************************************************************/
-void tsp_update_sync_fiq_stats(uint32_t type, uint64_t elr_el3)
+void tsp_update_sync_sel1_intr_stats(uint32_t type, uint64_t elr_el3)
 {
 	uint32_t linear_id = plat_my_core_pos();
 
-	tsp_stats[linear_id].sync_fiq_count++;
-	if (type == TSP_HANDLE_FIQ_AND_RETURN)
-		tsp_stats[linear_id].sync_fiq_ret_count++;
+	tsp_stats[linear_id].sync_sel1_intr_count++;
+	if (type == TSP_HANDLE_SEL1_INTR_AND_RETURN)
+		tsp_stats[linear_id].sync_sel1_intr_ret_count++;
 
 #if LOG_LEVEL >= LOG_LEVEL_VERBOSE
 	spin_lock(&console_lock);
-	VERBOSE("TSP: cpu 0x%lx sync fiq request from 0x%lx\n",
+	VERBOSE("TSP: cpu 0x%lx sync s-el1 interrupt request from 0x%lx\n",
 		read_mpidr(), elr_el3);
-	VERBOSE("TSP: cpu 0x%lx: %d sync fiq requests, %d sync fiq returns\n",
+	VERBOSE("TSP: cpu 0x%lx: %d sync s-el1 interrupt requests,"
+		" %d sync s-el1 interrupt returns\n",
 		read_mpidr(),
-		tsp_stats[linear_id].sync_fiq_count,
-		tsp_stats[linear_id].sync_fiq_ret_count);
+		tsp_stats[linear_id].sync_sel1_intr_count,
+		tsp_stats[linear_id].sync_sel1_intr_ret_count);
 	spin_unlock(&console_lock);
 #endif
 }
@@ -87,13 +88,13 @@
 }
 
 /*******************************************************************************
- * TSP FIQ handler called as a part of both synchronous and asynchronous
- * handling of FIQ interrupts. It returns 0 upon successfully handling a S-EL1
- * FIQ and treats all other FIQs as EL3 interrupts. It assumes that the GIC
- * architecture version in v2.0 and the secure physical timer interrupt is the
- * only S-EL1 interrupt that it needs to handle.
+ * TSP interrupt handler is called as a part of both synchronous and
+ * asynchronous handling of TSP interrupts. Currently the physical timer
+ * interrupt is the only S-EL1 interrupt that this handler expects. It returns
+ * 0 upon successfully handling the expected interrupt and all other
+ * interrupts are treated as normal world or EL3 interrupts.
  ******************************************************************************/
-int32_t tsp_fiq_handler(void)
+int32_t tsp_common_int_handler(void)
 {
 	uint32_t linear_id = plat_my_core_pos(), id;
 
@@ -123,13 +124,13 @@
 	plat_ic_end_of_interrupt(id);
 
 	/* Update the statistics and print some messages */
-	tsp_stats[linear_id].fiq_count++;
+	tsp_stats[linear_id].sel1_intr_count++;
 #if LOG_LEVEL >= LOG_LEVEL_VERBOSE
 	spin_lock(&console_lock);
-	VERBOSE("TSP: cpu 0x%lx handled fiq %d\n",
+	VERBOSE("TSP: cpu 0x%lx handled S-EL1 interrupt %d\n",
 	       read_mpidr(), id);
-	VERBOSE("TSP: cpu 0x%lx: %d fiq requests\n",
-	     read_mpidr(), tsp_stats[linear_id].fiq_count);
+	VERBOSE("TSP: cpu 0x%lx: %d S-EL1 requests\n",
+	     read_mpidr(), tsp_stats[linear_id].sel1_intr_count);
 	spin_unlock(&console_lock);
 #endif
 	return 0;
diff --git a/bl32/tsp/tsp_private.h b/bl32/tsp/tsp_private.h
index 346351c..e341cfd 100644
--- a/bl32/tsp/tsp_private.h
+++ b/bl32/tsp/tsp_private.h
@@ -54,11 +54,14 @@
 
 
 typedef struct work_statistics {
-	uint32_t fiq_count;		/* Number of FIQs on this cpu */
-	uint32_t sync_fiq_count;	/* Number of sync. fiqs on this cpu */
-	uint32_t sync_fiq_ret_count;	/* Number of fiq returns on this cpu */
+	/* Number of s-el1 interrupts on this cpu */
+	uint32_t sel1_intr_count;
 	/* Number of non s-el1 interrupts on this cpu which preempted TSP */
 	uint32_t preempt_intr_count;
+	/* Number of sync s-el1 interrupts on this cpu */
+	uint32_t sync_sel1_intr_count;
+	/* Number of s-el1 interrupts returns on this cpu */
+	uint32_t sync_sel1_intr_ret_count;
 	uint32_t smc_count;		/* Number of returns on this cpu */
 	uint32_t eret_count;		/* Number of entries on this cpu */
 	uint32_t cpu_on_count;		/* Number of cpu on requests */
@@ -116,8 +119,8 @@
 void tsp_generic_timer_save(void);
 void tsp_generic_timer_restore(void);
 
-/* FIQ management functions */
-void tsp_update_sync_fiq_stats(uint32_t type, uint64_t elr_el3);
+/* S-EL1 interrupt management functions */
+void tsp_update_sync_sel1_intr_stats(uint32_t type, uint64_t elr_el3);
 
 
 /* Data structure to keep track of TSP statistics */
diff --git a/docs/interrupt-framework-design.md b/docs/interrupt-framework-design.md
index 53707ae..271cd92 100644
--- a/docs/interrupt-framework-design.md
+++ b/docs/interrupt-framework-design.md
@@ -399,12 +399,12 @@
 1.  It passes control to the Test Secure Payload to perform its
     initialisation. The TSP provides the address of the vector table
     `tsp_vectors` in the SP which also includes the handler for Secure-EL1
-    interrupts in the `fiq_entry` field. The TSPD passes control to the TSP at
+    interrupts in the `sel1_intr_entry` field. The TSPD passes control to the TSP at
     this address when it receives a Secure-EL1 interrupt.
 
     The handover agreement between the TSP and the TSPD requires that the TSPD
     masks all interrupts (`PSTATE.DAIF` bits) when it calls
-    `tsp_fiq_entry()`. The TSP has to preserve the callee saved general
+    `tsp_sel1_intr_entry()`. The TSP has to preserve the callee saved general
     purpose, SP_EL1/Secure-EL0, LR, VFP and system registers. It can use
     `x0-x18` to enable its C runtime.
 
@@ -514,7 +514,7 @@
 The routing model for Secure-EL1 and non-secure interrupts chosen by the TSP is
 described in Section 2.2.2. It is known to the TSPD service at build time.
 
-The TSP implements an entrypoint (`tsp_fiq_entry()`) for handling Secure-EL1
+The TSP implements an entrypoint (`tsp_sel1_intr_entry()`) for handling Secure-EL1
 interrupts taken in non-secure state and routed through the TSPD service
 (synchronous handling model). It passes the reference to this entrypoint via
 `tsp_vectors` to the TSPD service.
@@ -700,9 +700,9 @@
 3.  It saves the system register context for the non-secure state by calling
     `cm_el1_sysregs_context_save(NON_SECURE);`.
 
-4.  It sets the `ELR_EL3` system register to `tsp_fiq_entry` and sets the
+4.  It sets the `ELR_EL3` system register to `tsp_sel1_intr_entry` and sets the
     `SPSR_EL3.DAIF` bits in the secure CPU context. It sets `x0` to
-    `TSP_HANDLE_FIQ_AND_RETURN`. If the TSP was in the middle of handling a
+    `TSP_HANDLE_SEL1_INTR_AND_RETURN`. If the TSP was in the middle of handling a
     standard SMC, then the `ELR_EL3` and `SPSR_EL3` registers in the secure CPU
     context are saved first.
 
@@ -723,20 +723,20 @@
 
 ![Image 1](diagrams/sec-int-handling.png?raw=true)
 
-The TSP issues an SMC with `TSP_HANDLED_S_EL1_FIQ` as the function identifier to
+The TSP issues an SMC with `TSP_HANDLED_S_EL1_INTR` as the function identifier to
 signal completion of interrupt handling.
 
 The TSP issues an SMC with `TSP_PREEMPTED` as the function identifier to signal
 generation of a non-secure interrupt in Secure-EL1.
 
 The TSPD service takes the following actions in `tspd_smc_handler()` function
-upon receiving an SMC with `TSP_HANDLED_S_EL1_FIQ` and `TSP_PREEMPTED` as the
+upon receiving an SMC with `TSP_HANDLED_S_EL1_INTR` and `TSP_PREEMPTED` as the
 function identifiers:
 
 1.  It ensures that the call originated from the secure state otherwise
     execution returns to the non-secure state with `SMC_UNK` in `x0`.
 
-2.  If the function identifier is `TSP_HANDLED_S_EL1_FIQ`, it restores the
+2.  If the function identifier is `TSP_HANDLED_S_EL1_INTR`, it restores the
     saved `ELR_EL3` and `SPSR_EL3` system registers back to the secure CPU
     context (see step 4 above) in case the TSP had been preempted by a non
     secure interrupt earlier.  It does not save the secure context since the
@@ -811,7 +811,7 @@
 
 ##### 2.3.3.1 Test secure payload behavior
 The TSPD hands control of a Secure-EL1 interrupt to the TSP at the
-`tsp_fiq_entry()`.  The TSP handles the interrupt while ensuring that the
+`tsp_sel1_intr_entry()`.  The TSP handles the interrupt while ensuring that the
 handover agreement described in Section 2.2.2.1 is maintained. It updates some
 statistics by calling `tsp_update_sync_fiq_stats()`. It then calls
 `tsp_fiq_handler()` which.
@@ -827,7 +827,7 @@
     end of interrupt processing.
 
 The TSP passes control back to the TSPD by issuing an SMC64 with
-`TSP_HANDLED_S_EL1_FIQ` as the function identifier.
+`TSP_HANDLED_S_EL1_INTR` as the function identifier.
 
 The TSP handles interrupts under the asynchronous model as follows.
 
diff --git a/docs/user-guide.md b/docs/user-guide.md
index bcdc645..716ed7d 100644
--- a/docs/user-guide.md
+++ b/docs/user-guide.md
@@ -278,10 +278,13 @@
     (Coherent memory region is included) or 0 (Coherent memory region is
     excluded). Default is 1.
 
-*   `TSPD_ROUTE_IRQ_TO_EL3`: A non zero value enables the routing model
-    for non-secure interrupts in which they are routed to EL3 (TSPD). The
-    default model (when the value is 0) is to route non-secure interrupts
-    to S-EL1 (TSP).
+*   `TSP_NS_INTR_ASYNC_PREEMPT`: A non zero value enables the interrupt
+    routing model which routes non-secure interrupts asynchronously from TSP
+    to EL3 causing immediate preemption of TSP. The EL3 is responsible
+    for saving and restoring the TSP context in this routing model. The
+    default routing model (when the value is 0) is to route non-secure
+    interrupts to TSP allowing it to save its context and hand over
+    synchronously to EL3 via an SMC.
 
 *   `TRUSTED_BOARD_BOOT`: Boolean flag to include support for the Trusted Board
     Boot feature. When set to '1', BL1 and BL2 images include support to load
diff --git a/include/bl32/tsp/tsp.h b/include/bl32/tsp/tsp.h
index 2286b3f..fd43fd3 100644
--- a/include/bl32/tsp/tsp.h
+++ b/include/bl32/tsp/tsp.h
@@ -45,11 +45,12 @@
 #define TSP_SYSTEM_RESET_DONE	0xf2000009
 
 /*
- * Function identifiers to handle FIQs through the synchronous handling model.
- * If the TSP was previously interrupted then control has to be returned to
- * the TSPD after handling the interrupt else execution can remain in the TSP.
+ * Function identifiers to handle S-El1 interrupt through the synchronous
+ * handling model. If the TSP was previously interrupted then control has to
+ * be returned to the TSPD after handling the interrupt else execution can
+ * remain in the TSP.
  */
-#define TSP_HANDLED_S_EL1_FIQ		0xf2000006
+#define TSP_HANDLED_S_EL1_INTR		0xf2000006
 
 /* SMC function ID that TSP uses to request service from secure monitor */
 #define TSP_GET_ARGS		0xf2001000
@@ -62,7 +63,7 @@
 #define TSP_SUB		0x2001
 #define TSP_MUL		0x2002
 #define TSP_DIV		0x2003
-#define TSP_HANDLE_FIQ_AND_RETURN	0x2004
+#define TSP_HANDLE_SEL1_INTR_AND_RETURN	0x2004
 
 /*
  * Generate function IDs for TSP services to be used in SMC calls, by
@@ -114,7 +115,7 @@
 	tsp_vector_isn_t cpu_off_entry;
 	tsp_vector_isn_t cpu_resume_entry;
 	tsp_vector_isn_t cpu_suspend_entry;
-	tsp_vector_isn_t fiq_entry;
+	tsp_vector_isn_t sel1_intr_entry;
 	tsp_vector_isn_t system_off_entry;
 	tsp_vector_isn_t system_reset_entry;
 } tsp_vectors_t;
diff --git a/services/spd/tspd/tspd.mk b/services/spd/tspd/tspd.mk
index 139c7d7..ede2504 100644
--- a/services/spd/tspd/tspd.mk
+++ b/services/spd/tspd/tspd.mk
@@ -55,7 +55,17 @@
 
 # Flag used to enable routing of non-secure interrupts to EL3 when they are
 # generated while the code is executing in S-EL1/0.
-TSPD_ROUTE_IRQ_TO_EL3	:=	0
+TSP_NS_INTR_ASYNC_PREEMPT	:=	0
 
-$(eval $(call assert_boolean,TSPD_ROUTE_IRQ_TO_EL3))
-$(eval $(call add_define,TSPD_ROUTE_IRQ_TO_EL3))
+# If TSPD_ROUTE_IRQ_TO_EL3 build flag is defined, use it to define value for
+# TSP_NS_INTR_ASYNC_PREEMPT for backward compatibility.
+ifdef TSPD_ROUTE_IRQ_TO_EL3
+ifeq (${ERROR_DEPRECATED},1)
+$(error "TSPD_ROUTE_IRQ_TO_EL3 is deprecated. Please use the new build flag TSP_NS_INTR_ASYNC_PREEMPT")
+endif
+$(warning "TSPD_ROUTE_IRQ_TO_EL3 is deprecated. Please use the new build flag TSP_NS_INTR_ASYNC_PREEMPT")
+TSP_NS_INTR_ASYNC_PREEMPT	:= ${TSPD_ROUTE_IRQ_TO_EL3}
+endif
+
+$(eval $(call assert_boolean,TSP_NS_INTR_ASYNC_PREEMPT))
+$(eval $(call add_define,TSP_NS_INTR_ASYNC_PREEMPT))
diff --git a/services/spd/tspd/tspd_main.c b/services/spd/tspd/tspd_main.c
index 0d6e0d2..4c4861d 100644
--- a/services/spd/tspd/tspd_main.c
+++ b/services/spd/tspd/tspd_main.c
@@ -108,7 +108,7 @@
 /*******************************************************************************
  * This function is the handler registered for S-EL1 interrupts by the TSPD. It
  * validates the interrupt and upon success arranges entry into the TSP at
- * 'tsp_fiq_entry()' for handling the interrupt.
+ * 'tsp_sel1_intr_entry()' for handling the interrupt.
  ******************************************************************************/
 static uint64_t tspd_sel1_interrupt_handler(uint32_t id,
 					    uint32_t flags,
@@ -136,44 +136,44 @@
 	 * Determine if the TSP was previously preempted. Its last known
 	 * context has to be preserved in this case.
 	 * The TSP should return control to the TSPD after handling this
-	 * FIQ. Preserve essential EL3 context to allow entry into the
-	 * TSP at the FIQ entry point using the 'cpu_context' structure.
-	 * There is no need to save the secure system register context
-	 * since the TSP is supposed to preserve it during S-EL1 interrupt
-	 * handling.
+	 * S-EL1 interrupt. Preserve essential EL3 context to allow entry into
+	 * the TSP at the S-EL1 interrupt entry point using the 'cpu_context'
+	 * structure. There is no need to save the secure system register
+	 * context since the TSP is supposed to preserve it during S-EL1
+	 * interrupt handling.
 	 */
 	if (get_std_smc_active_flag(tsp_ctx->state)) {
 		tsp_ctx->saved_spsr_el3 = SMC_GET_EL3(&tsp_ctx->cpu_ctx,
 						      CTX_SPSR_EL3);
 		tsp_ctx->saved_elr_el3 = SMC_GET_EL3(&tsp_ctx->cpu_ctx,
 						     CTX_ELR_EL3);
-#if TSPD_ROUTE_IRQ_TO_EL3
+#if TSP_NS_INTR_ASYNC_PREEMPT
 		/*Need to save the previously interrupted secure context */
 		memcpy(&tsp_ctx->sp_ctx, &tsp_ctx->cpu_ctx, TSPD_SP_CTX_SIZE);
 #endif
 	}
 
 	cm_el1_sysregs_context_restore(SECURE);
-	cm_set_elr_spsr_el3(SECURE, (uint64_t) &tsp_vectors->fiq_entry,
+	cm_set_elr_spsr_el3(SECURE, (uint64_t) &tsp_vectors->sel1_intr_entry,
 		    SPSR_64(MODE_EL1, MODE_SP_ELX, DISABLE_ALL_EXCEPTIONS));
 
 	cm_set_next_eret_context(SECURE);
 
 	/*
-	 * Tell the TSP that it has to handle an FIQ synchronously. Also the
-	 * instruction in normal world where the interrupt was generated is
-	 * passed for debugging purposes. It is safe to retrieve this address
-	 * from ELR_EL3 as the secure context will not take effect until
-	 * el3_exit().
+	 * Tell the TSP that it has to handle a S-EL1 interrupt synchronously.
+	 * Also the instruction in normal world where the interrupt was
+	 * generated is passed for debugging purposes. It is safe to retrieve
+	 * this address from ELR_EL3 as the secure context will not take effect
+	 * until el3_exit().
 	 */
-	SMC_RET2(&tsp_ctx->cpu_ctx, TSP_HANDLE_FIQ_AND_RETURN, read_elr_el3());
+	SMC_RET2(&tsp_ctx->cpu_ctx, TSP_HANDLE_SEL1_INTR_AND_RETURN, read_elr_el3());
 }
 
-#if TSPD_ROUTE_IRQ_TO_EL3
+#if TSP_NS_INTR_ASYNC_PREEMPT
 /*******************************************************************************
- * This function is the handler registered for S-EL1 interrupts by the TSPD. It
- * validates the interrupt and upon success arranges entry into the TSP at
- * 'tsp_fiq_entry()' for handling the interrupt.
+ * This function is the handler registered for Non secure interrupts by the
+ * TSPD. It validates the interrupt and upon success arranges entry into the
+ * normal world for handling the interrupt.
  ******************************************************************************/
 static uint64_t tspd_ns_interrupt_handler(uint32_t id,
 					    uint32_t flags,
@@ -327,10 +327,10 @@
 
 	/*
 	 * This function ID is used only by the TSP to indicate that it has
-	 * finished handling a S-EL1 FIQ interrupt. Execution should resume
+	 * finished handling a S-EL1 interrupt. Execution should resume
 	 * in the normal world.
 	 */
-	case TSP_HANDLED_S_EL1_FIQ:
+	case TSP_HANDLED_S_EL1_INTR:
 		if (ns)
 			SMC_RET1(handle, SMC_UNK);
 
@@ -347,7 +347,7 @@
 			SMC_SET_EL3(&tsp_ctx->cpu_ctx,
 				    CTX_ELR_EL3,
 				    tsp_ctx->saved_elr_el3);
-#if TSPD_ROUTE_IRQ_TO_EL3
+#if TSP_NS_INTR_ASYNC_PREEMPT
 			/*
 			 * Need to restore the previously interrupted
 			 * secure context.
@@ -408,7 +408,7 @@
 			if (rc)
 				panic();
 
-#if TSPD_ROUTE_IRQ_TO_EL3
+#if TSP_NS_INTR_ASYNC_PREEMPT
 			/*
 			 * Register an interrupt handler for NS interrupts when
 			 * generated during code executing in secure state are
@@ -546,7 +546,7 @@
 				set_std_smc_active_flag(tsp_ctx->state);
 				cm_set_elr_el3(SECURE, (uint64_t)
 						&tsp_vectors->std_smc_entry);
-#if TSPD_ROUTE_IRQ_TO_EL3
+#if TSP_NS_INTR_ASYNC_PREEMPT
 				/*
 				 * Enable the routing of NS interrupts to EL3
 				 * during STD SMC processing on this core.
@@ -577,7 +577,7 @@
 			cm_set_next_eret_context(NON_SECURE);
 			if (GET_SMC_TYPE(smc_fid) == SMC_TYPE_STD) {
 				clr_std_smc_active_flag(tsp_ctx->state);
-#if TSPD_ROUTE_IRQ_TO_EL3
+#if TSP_NS_INTR_ASYNC_PREEMPT
 				/*
 				 * Disable the routing of NS interrupts to EL3
 				 * after STD SMC processing is finished on this
@@ -620,7 +620,7 @@
 		 * We are done stashing the non-secure context. Ask the
 		 * secure payload to do the work now.
 		 */
-#if TSPD_ROUTE_IRQ_TO_EL3
+#if TSP_NS_INTR_ASYNC_PREEMPT
 		/*
 		 * Enable the routing of NS interrupts to EL3 during resumption
 		 * of STD SMC call on this core.
diff --git a/services/spd/tspd/tspd_pm.c b/services/spd/tspd/tspd_pm.c
index 5089420..55562ba 100644
--- a/services/spd/tspd/tspd_pm.c
+++ b/services/spd/tspd/tspd_pm.c
@@ -130,7 +130,7 @@
 	/* Initialise this cpu's secure context */
 	cm_init_my_context(&tsp_on_entrypoint);
 
-#if TSPD_ROUTE_IRQ_TO_EL3
+#if TSP_NS_INTR_ASYNC_PREEMPT
 	/*
 	 * Disable the NS interrupt locally since it will be enabled globally
 	 * within cm_init_my_context.
diff --git a/services/spd/tspd/tspd_private.h b/services/spd/tspd/tspd_private.h
index 5f6fb2b..cadc6aa 100644
--- a/services/spd/tspd/tspd_private.h
+++ b/services/spd/tspd/tspd_private.h
@@ -183,10 +183,10 @@
 
 /*******************************************************************************
  * Structure which helps the SPD to maintain the per-cpu state of the SP.
- * 'saved_spsr_el3' - temporary copy to allow FIQ handling when the TSP has been
- *                    preempted.
- * 'saved_elr_el3'  - temporary copy to allow FIQ handling when the TSP has been
- *                    preempted.
+ * 'saved_spsr_el3' - temporary copy to allow S-EL1 interrupt handling when
+ *                    the TSP has been preempted.
+ * 'saved_elr_el3'  - temporary copy to allow S-EL1 interrupt handling when
+ *                    the TSP has been preempted.
  * 'state'          - collection of flags to track SP state e.g. on/off
  * 'mpidr'          - mpidr to associate a context with a cpu
  * 'c_rt_ctx'       - stack address to restore C runtime context from after
@@ -207,7 +207,7 @@
 	uint64_t c_rt_ctx;
 	cpu_context_t cpu_ctx;
 	uint64_t saved_tsp_args[TSP_NUM_ARGS];
-#if TSPD_ROUTE_IRQ_TO_EL3
+#if TSP_NS_INTR_ASYNC_PREEMPT
 	sp_ctx_regs_t sp_ctx;
 #endif
 } tsp_context_t;