Merge pull request #219 from jcastillo-arm/jc/tf-issues/253

Improvements to ARM GIC driver
Juno: Use the generic ARM GIC driver

drivers/arm/gic/arm_gic.c

@@ -40,6 +40,12 @@
 #include <platform.h>
 #include <stdint.h>
 
+/* Value used to initialize Non-Secure IRQ priorities four at a time */
+#define GICD_IPRIORITYR_DEF_VAL \
+	(GIC_HIGHEST_NS_PRIORITY | \
+	(GIC_HIGHEST_NS_PRIORITY << 8) | \
+	(GIC_HIGHEST_NS_PRIORITY << 16) | \
+	(GIC_HIGHEST_NS_PRIORITY << 24))
 
 static unsigned int g_gicc_base;
 static unsigned int g_gicd_base;
@@ -216,8 +222,16 @@ void arm_gic_pcpu_distif_setup(void)
 	unsigned int index, irq_num;
 
 	assert(g_gicd_base);
+
+	/* Mark all 32 SGI+PPI interrupts as Group 1 (non-secure) */
 	gicd_write_igroupr(g_gicd_base, 0, ~0);
 
+	/* Setup PPI priorities doing four at a time */
+	for (index = 0; index < 32; index += 4) {
+		gicd_write_ipriorityr(g_gicd_base, index,
+				GICD_IPRIORITYR_DEF_VAL);
+	}
+
 	assert(g_irq_sec_ptr);
 	for (index = 0; index < g_num_irqs; index++) {
 		irq_num = g_irq_sec_ptr[index];
@@ -231,6 +245,17 @@ void arm_gic_pcpu_distif_setup(void)
 	}
 }
 
+/*******************************************************************************
+ * Get the current CPU bit mask from GICD_ITARGETSR0
+ ******************************************************************************/
+static unsigned int arm_gic_get_cpuif_id(void)
+{
+	unsigned int val;
+
+	val = gicd_read_itargetsr(g_gicd_base, 0);
+	return val & GIC_TARGET_CPU_MASK;
+}
+
 /*******************************************************************************
  * Global gic distributor setup which will be done by the primary cpu after a
  * cold boot. It marks out the secure SPIs, PPIs & SGIs and enables them. It
@@ -239,6 +264,7 @@ void arm_gic_pcpu_distif_setup(void)
 static void arm_gic_distif_setup(void)
 {
 	unsigned int num_ints, ctlr, index, irq_num;
+	uint8_t target_cpu;
 
 	/* Disable the distributor before going further */
 	assert(g_gicd_base);
@@ -247,16 +273,24 @@ static void arm_gic_distif_setup(void)
 	gicd_write_ctlr(g_gicd_base, ctlr);
 
 	/*
-	 * Mark out non-secure interrupts. Calculate number of
-	 * IGROUPR registers to consider. Will be equal to the
-	 * number of IT_LINES
+	 * Mark out non-secure SPI interrupts. The number of interrupts is
+	 * calculated as 32 * (IT_LINES + 1). We do 32 at a time.
 	 */
 	num_ints = gicd_read_typer(g_gicd_base) & IT_LINES_NO_MASK;
-	num_ints++;
-	for (index = 0; index < num_ints; index++)
-		gicd_write_igroupr(g_gicd_base, index << IGROUPR_SHIFT, ~0);
+	num_ints = (num_ints + 1) << 5;
+	for (index = MIN_SPI_ID; index < num_ints; index += 32)
+		gicd_write_igroupr(g_gicd_base, index, ~0);
+
+	/* Setup SPI priorities doing four at a time */
+	for (index = MIN_SPI_ID; index < num_ints; index += 4) {
+		gicd_write_ipriorityr(g_gicd_base, index,
+				GICD_IPRIORITYR_DEF_VAL);
+	}
+
+	/* Read the target CPU mask */
+	target_cpu = arm_gic_get_cpuif_id();
 
-	/* Configure secure interrupts now */
+	/* Configure SPI secure interrupts now */
 	assert(g_irq_sec_ptr);
 	for (index = 0; index < g_num_irqs; index++) {
 		irq_num = g_irq_sec_ptr[index];
@@ -265,11 +299,16 @@ static void arm_gic_distif_setup(void)
 			gicd_clr_igroupr(g_gicd_base, irq_num);
 			gicd_set_ipriorityr(g_gicd_base, irq_num,
 				GIC_HIGHEST_SEC_PRIORITY);
-			gicd_set_itargetsr(g_gicd_base, irq_num,
-					platform_get_core_pos(read_mpidr()));
+			gicd_set_itargetsr(g_gicd_base, irq_num, target_cpu);
 			gicd_set_isenabler(g_gicd_base, irq_num);
 		}
 	}
+
+	/*
+	 * Configure the SGI and PPI. This is done in a separated function
+	 * because each CPU is responsible for initializing its own private
+	 * interrupts.
+	 */
 	arm_gic_pcpu_distif_setup();
 
 	gicd_write_ctlr(g_gicd_base, ctlr | ENABLE_GRP0);
@@ -285,13 +324,22 @@ void arm_gic_init(unsigned int gicc_base,
 		unsigned int num_irqs
 		)
 {
+	unsigned int val;
+
 	assert(gicc_base);
 	assert(gicd_base);
-	assert(gicr_base);
 	assert(irq_sec_ptr);
+
 	g_gicc_base = gicc_base;
 	g_gicd_base = gicd_base;
-	g_gicr_base = gicr_base;
+
+	val = gicc_read_iidr(g_gicc_base);
+
+	if (((val >> GICC_IIDR_ARCH_SHIFT) & GICC_IIDR_ARCH_MASK) >= 3) {
+		assert(gicr_base);
+		g_gicr_base = gicr_base;
+	}
+
 	g_irq_sec_ptr = irq_sec_ptr;
 	g_num_irqs = num_irqs;
 }

drivers/arm/gic/gic_v2.c

@@ -283,13 +283,12 @@ void gicd_set_ipriorityr(unsigned int base, unsigned int id, unsigned int pri)
 	mmio_write_32(reg, reg_val);
 }
 
-void gicd_set_itargetsr(unsigned int base, unsigned int id, unsigned int iface)
+void gicd_set_itargetsr(unsigned int base, unsigned int id, unsigned int target)
 {
 	unsigned byte_off = id & ((1 << ITARGETSR_SHIFT) - 1);
 	unsigned int reg_val = gicd_read_itargetsr(base, id);
 
-	gicd_write_itargetsr(base, id, reg_val |
-			     (1 << iface) << (byte_off << 3));
+	gicd_write_itargetsr(base, id, reg_val | (target << (byte_off << 3)));
 }
 
 /*******************************************************************************

include/drivers/arm/gic_v2.h

@@ -48,6 +48,7 @@
 #define GIC_HIGHEST_NS_PRIORITY	128
 #define GIC_LOWEST_NS_PRIORITY	254 /* 255 would disable an interrupt */
 #define GIC_SPURIOUS_INTERRUPT	1023
+#define GIC_TARGET_CPU_MASK	0xff
 
 #define ENABLE_GRP0		(1 << 0)
 #define ENABLE_GRP1		(1 << 1)

plat/juno/aarch64/juno_common.c

@@ -29,6 +29,7 @@
  */
 
 #include <arch_helpers.h>
+#include <arm_gic.h>
 #include <assert.h>
 #include <bl_common.h>
 #include <debug.h>
@@ -113,6 +114,28 @@ static const mmap_region_t juno_mmap[] = {
 };
 #endif
 
+/* Array of secure interrupts to be configured by the gic driver */
+const unsigned int irq_sec_array[] = {
+	IRQ_MHU,
+	IRQ_GPU_SMMU_0,
+	IRQ_GPU_SMMU_1,
+	IRQ_ETR_SMMU,
+	IRQ_TZC400,
+	IRQ_TZ_WDOG,
+	IRQ_SEC_PHY_TIMER,
+	IRQ_SEC_SGI_0,
+	IRQ_SEC_SGI_1,
+	IRQ_SEC_SGI_2,
+	IRQ_SEC_SGI_3,
+	IRQ_SEC_SGI_4,
+	IRQ_SEC_SGI_5,
+	IRQ_SEC_SGI_6,
+	IRQ_SEC_SGI_7
+};
+
+const unsigned int num_sec_irqs = sizeof(irq_sec_array) /
+	sizeof(irq_sec_array[0]);
+
 /*******************************************************************************
  * Macro generating the code for the function setting up the pagetables as per
  * the platform memory map & initialize the mmu, for the given exception level
@@ -163,3 +186,8 @@ uint64_t plat_get_syscnt_freq(void)
 
 	return counter_base_frequency;
 }
+
+void plat_gic_init(void)
+{
+	arm_gic_init(GICC_BASE, GICD_BASE, 0, irq_sec_array, num_sec_irqs);
+}

plat/juno/bl31_plat_setup.c

@@ -29,6 +29,7 @@
  */
 
 #include <arch.h>
+#include <arm_gic.h>
 #include <assert.h>
 #include <bl31.h>
 #include <bl_common.h>
@@ -151,7 +152,8 @@ void bl31_platform_setup(void)
 	mhu_secure_init();
 
 	/* Initialize the gic cpu and distributor interfaces */
-	gic_setup();
+	plat_gic_init();
+	arm_gic_setup();
 
 	/* Enable and initialize the System level generic timer */
 	mmio_write_32(SYS_CNTCTL_BASE + CNTCR_OFF, CNTCR_FCREQ(0) | CNTCR_EN);

plat/juno/juno_private.h

@@ -83,18 +83,7 @@ void plat_report_exception(unsigned long type);
 unsigned long plat_get_ns_image_entrypoint(void);
 unsigned long platform_get_stack(unsigned long mpidr);
 uint64_t plat_get_syscnt_freq(void);
-
-/* Declarations for plat_gic.c */
-uint32_t ic_get_pending_interrupt_id(void);
-uint32_t ic_get_pending_interrupt_type(void);
-uint32_t ic_acknowledge_interrupt(void);
-uint32_t ic_get_interrupt_type(uint32_t id);
-void ic_end_of_interrupt(uint32_t id);
-void gic_cpuif_deactivate(unsigned int gicc_base);
-void gic_cpuif_setup(unsigned int gicc_base);
-void gic_pcpu_distif_setup(unsigned int gicd_base);
-void gic_setup(void);
-uint32_t plat_interrupt_type_to_line(uint32_t type, uint32_t security_state);
+void plat_gic_init(void);
 
 /* Declarations for plat_topology.c */
 int plat_setup_topology(void);

plat/juno/plat_gic.c

-/*
- * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * Redistributions of source code must retain the above copyright notice, this
- * list of conditions and the following disclaimer.
- *
- * Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * Neither the name of ARM nor the names of its contributors may be used
- * to endorse or promote products derived from this software without specific
- * prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <arch_helpers.h>
-#include <assert.h>
-#include <bl_common.h>
-#include <gic_v2.h>
-#include <interrupt_mgmt.h>
-#include <platform.h>
-#include "juno_def.h"
-#include "juno_private.h"
-
-
-/* Value used to initialise Non-Secure irq priorities four at a time */
-#define DEFAULT_NS_PRIORITY_X4 \
-	(GIC_HIGHEST_NS_PRIORITY | \
-	(GIC_HIGHEST_NS_PRIORITY << 8) | \
-	(GIC_HIGHEST_NS_PRIORITY << 16) | \
-	(GIC_HIGHEST_NS_PRIORITY << 24))
-
-
-/*******************************************************************************
- * Enable secure interrupts and use FIQs to route them. Disable legacy bypass
- * and set the priority mask register to allow all interrupts to trickle in.
- ******************************************************************************/
-void gic_cpuif_setup(unsigned int gicc_base)
-{
-	unsigned int val;
-
-	gicc_write_pmr(gicc_base, GIC_PRI_MASK);
-
-	val = ENABLE_GRP0 | FIQ_EN;
-	val |= FIQ_BYP_DIS_GRP0 | IRQ_BYP_DIS_GRP0;
-	val |= FIQ_BYP_DIS_GRP1 | IRQ_BYP_DIS_GRP1;
-	gicc_write_ctlr(gicc_base, val);
-}
-
-/*******************************************************************************
- * Place the cpu interface in a state where it can never make a cpu exit wfi as
- * as result of an asserted interrupt. This is critical for powering down a cpu
- ******************************************************************************/
-void gic_cpuif_deactivate(unsigned int gicc_base)
-{
-	unsigned int val;
-
-	/* Disable secure, non-secure interrupts and disable their bypass */
-	val = gicc_read_ctlr(gicc_base);
-	val &= ~(ENABLE_GRP0 | ENABLE_GRP1);
-	val |= FIQ_BYP_DIS_GRP1 | FIQ_BYP_DIS_GRP0;
-	val |= IRQ_BYP_DIS_GRP0 | IRQ_BYP_DIS_GRP1;
-	gicc_write_ctlr(gicc_base, val);
-}
-
-static void gic_set_secure(unsigned int gicd_base, unsigned id)
-{
-	/* Set interrupt as Group 0 */
-	gicd_clr_igroupr(gicd_base, id);
-
-	/* Set priority to max */
-	gicd_set_ipriorityr(gicd_base, id, GIC_HIGHEST_SEC_PRIORITY);
-}
-
-/*******************************************************************************
- * Per cpu gic distributor setup which will be done by all cpus after a cold
- * boot/hotplug. This marks out the secure interrupts & enables them.
- ******************************************************************************/
-void gic_pcpu_distif_setup(unsigned int gicd_base)
-{
-	unsigned i;
-
-	/* Mark all 32 PPI interrupts as Group 1 (non-secure) */
-	mmio_write_32(gicd_base + GICD_IGROUPR, 0xffffffffu);
-
-	/* Setup PPI priorities doing four at a time */
-	for (i = 0; i < 32; i += 4)
-		mmio_write_32(gicd_base + GICD_IPRIORITYR + i, DEFAULT_NS_PRIORITY_X4);
-
-	/* Configure those PPIs we want as secure, and enable them. */
-	static const char sec_irq[] = {
-		IRQ_SEC_PHY_TIMER,
-		IRQ_SEC_SGI_0,
-		IRQ_SEC_SGI_1,
-		IRQ_SEC_SGI_2,
-		IRQ_SEC_SGI_3,
-		IRQ_SEC_SGI_4,
-		IRQ_SEC_SGI_5,
-		IRQ_SEC_SGI_6,
-		IRQ_SEC_SGI_7
-	};
-	for (i = 0; i < sizeof(sec_irq) / sizeof(sec_irq[0]); i++) {
-		gic_set_secure(gicd_base, sec_irq[i]);
-		gicd_set_isenabler(gicd_base, sec_irq[i]);
-	}
-}
-
-/*******************************************************************************
- * Global gic distributor setup which will be done by the primary cpu after a
- * cold boot. It marks out the secure SPIs, PPIs & SGIs and enables them. It
- * then enables the secure GIC distributor interface.
- ******************************************************************************/
-static void gic_distif_setup(unsigned int gicd_base)
-{
-	unsigned int i, ctlr;
-	const unsigned int ITLinesNumber =
-				gicd_read_typer(gicd_base) & IT_LINES_NO_MASK;
-
-	/* Disable the distributor before going further */
-	ctlr = gicd_read_ctlr(gicd_base);
-	ctlr &= ~(ENABLE_GRP0 | ENABLE_GRP1);
-	gicd_write_ctlr(gicd_base, ctlr);
-
-	/* Mark all lines of SPIs as Group 1 (non-secure) */
-	for (i = 0; i < ITLinesNumber; i++)
-		mmio_write_32(gicd_base + GICD_IGROUPR + 4 + i * 4, 0xffffffffu);
-
-	/* Setup SPI priorities doing four at a time */
-	for (i = 0; i < ITLinesNumber * 32; i += 4)
-		mmio_write_32(gicd_base + GICD_IPRIORITYR + 32 + i, DEFAULT_NS_PRIORITY_X4);
-
-	/* Configure the SPIs we want as secure */
-	static const char sec_irq[] = {
-		IRQ_MHU,
-		IRQ_GPU_SMMU_0,
-		IRQ_GPU_SMMU_1,
-		IRQ_ETR_SMMU,
-		IRQ_TZC400,
-		IRQ_TZ_WDOG
-	};
-	for (i = 0; i < sizeof(sec_irq) / sizeof(sec_irq[0]); i++)
-		gic_set_secure(gicd_base, sec_irq[i]);
-
-	/* Route watchdog interrupt to this CPU and enable it. */
-	gicd_set_itargetsr(gicd_base, IRQ_TZ_WDOG,
-			   platform_get_core_pos(read_mpidr()));
-	gicd_set_isenabler(gicd_base, IRQ_TZ_WDOG);
-
-	/* Now setup the PPIs */
-	gic_pcpu_distif_setup(gicd_base);
-
-	/* Enable Group 0 (secure) interrupts */
-	gicd_write_ctlr(gicd_base, ctlr | ENABLE_GRP0);
-}
-
-void gic_setup(void)
-{
-	gic_cpuif_setup(GICC_BASE);
-	gic_distif_setup(GICD_BASE);
-}
-
-/*******************************************************************************
- * An ARM processor signals interrupt exceptions through the IRQ and FIQ pins.
- * The interrupt controller knows which pin/line it uses to signal a type of
- * interrupt. The platform knows which interrupt controller type is being used
- * in a particular security state e.g. with an ARM GIC, normal world could use
- * the GICv2 features while the secure world could use GICv3 features and vice
- * versa.
- * This function is exported by the platform to let the interrupt management
- * framework determine for a type of interrupt and security state, which line
- * should be used in the SCR_EL3 to control its routing to EL3. The interrupt
- * line is represented as the bit position of the IRQ or FIQ bit in the SCR_EL3.
- ******************************************************************************/
-uint32_t plat_interrupt_type_to_line(uint32_t type, uint32_t security_state)
-{
-	assert(type == INTR_TYPE_S_EL1 ||
-	       type == INTR_TYPE_EL3 ||
-	       type == INTR_TYPE_NS);
-
-	assert(sec_state_is_valid(security_state));
-
-	/*
-	 * We ignore the security state parameter because Juno is GICv2 only
-	 * so both normal and secure worlds are using ARM GICv2.
-	 */
-	return gicv2_interrupt_type_to_line(GICC_BASE, type);
-}
-
-/*******************************************************************************
- * This function returns the type of the highest priority pending interrupt at
- * the GIC cpu interface. INTR_TYPE_INVAL is returned when there is no
- * interrupt pending.
- ******************************************************************************/
-uint32_t plat_ic_get_pending_interrupt_type(void)
-{
-	uint32_t id;
-
-	id = gicc_read_hppir(GICC_BASE);
-
-	/* Assume that all secure interrupts are S-EL1 interrupts */
-	if (id < 1022)
-		return INTR_TYPE_S_EL1;
-
-	if (id == GIC_SPURIOUS_INTERRUPT)
-		return INTR_TYPE_INVAL;
-
-	return INTR_TYPE_NS;
-}
-
-/*******************************************************************************
- * This function returns the id of the highest priority pending interrupt at
- * the GIC cpu interface. INTR_ID_UNAVAILABLE is returned when there is no
- * interrupt pending.
- ******************************************************************************/
-uint32_t plat_ic_get_pending_interrupt_id(void)
-{
-	uint32_t id;
-
-	id = gicc_read_hppir(GICC_BASE);
-
-	if (id < 1022)
-		return id;
-
-	if (id == 1023)
-		return INTR_ID_UNAVAILABLE;
-
-	/*
-	 * Find out which non-secure interrupt it is under the assumption that
-	 * the GICC_CTLR.AckCtl bit is 0.
-	 */
-	return gicc_read_ahppir(GICC_BASE);
-}
-
-/*******************************************************************************
- * This functions reads the GIC cpu interface Interrupt Acknowledge register
- * to start handling the pending interrupt. It returns the contents of the IAR.
- ******************************************************************************/
-uint32_t plat_ic_acknowledge_interrupt(void)
-{
-	return gicc_read_IAR(GICC_BASE);
-}
-
-/*******************************************************************************
- * This functions writes the GIC cpu interface End Of Interrupt register with
- * the passed value to finish handling the active interrupt
- ******************************************************************************/
-void plat_ic_end_of_interrupt(uint32_t id)
-{
-	gicc_write_EOIR(GICC_BASE, id);
-}
-
-/*******************************************************************************
- * This function returns the type of the interrupt id depending upon the group
- * this interrupt has been configured under by the interrupt controller i.e.
- * group0 or group1.
- ******************************************************************************/
-uint32_t plat_ic_get_interrupt_type(uint32_t id)
-{
-	uint32_t group;
-
-	group = gicd_get_igroupr(GICD_BASE, id);
-
-	/* Assume that all secure interrupts are S-EL1 interrupts */
-	if (group == GRP0)
-		return INTR_TYPE_S_EL1;
-	else
-		return INTR_TYPE_NS;
-}

plat/juno/plat_pm.c

@@ -30,6 +30,7 @@
 
 #include <assert.h>
 #include <arch_helpers.h>
+#include <arm_gic.h>
 #include <debug.h>
 #include <cci400.h>
 #include <errno.h>
@@ -133,10 +134,10 @@ int32_t juno_affinst_on_finish(uint64_t mpidr, uint32_t afflvl, uint32_t state)
 
 
 	/* Enable the gic cpu interface */
-	gic_cpuif_setup(GICC_BASE);
+	arm_gic_cpuif_setup();
 
 	/* Juno todo: Is this setup only needed after a cold boot? */
-	gic_pcpu_distif_setup(GICD_BASE);
+	arm_gic_pcpu_distif_setup();
 
 	/* Clear the mailbox for this cpu. */
 	juno_program_mailbox(mpidr, 0);
@@ -155,7 +156,7 @@ static int32_t juno_power_down_common(uint32_t afflvl)
 	uint32_t cluster_state = scpi_power_on;
 
 	/* Prevent interrupts from spuriously waking up this cpu */
-	gic_cpuif_deactivate(GICC_BASE);
+	arm_gic_cpuif_deactivate();
 
 	/* Cluster is to be turned off, so disable coherency */
 	if (afflvl > MPIDR_AFFLVL0) {

plat/juno/platform.mk

@@ -53,6 +53,7 @@ PLAT_BL_COMMON_SOURCES	:=	drivers/arm/pl011/pl011_console.S	\
 				drivers/io/io_storage.c			\
 				lib/aarch64/xlat_tables.c		\
 				plat/common/aarch64/plat_common.c	\
+				plat/common/plat_gic.c			\
 				plat/juno/plat_io_storage.c
 
 BL1_SOURCES		+=	drivers/arm/cci400/cci400.c		\
@@ -76,7 +77,9 @@ BL2_SOURCES		+=	drivers/arm/tzc400/tzc400.c		\
 				plat/juno/scpi.c
 
 BL31_SOURCES		+=	drivers/arm/cci400/cci400.c		\
+				drivers/arm/gic/arm_gic.c		\
 				drivers/arm/gic/gic_v2.c		\
+				drivers/arm/gic/gic_v3.c		\
 				lib/cpus/aarch64/cortex_a53.S		\
 				lib/cpus/aarch64/cortex_a57.S		\
 				plat/common/aarch64/platform_mp_stack.S	\
@@ -86,7 +89,6 @@ BL31_SOURCES		+=	drivers/arm/cci400/cci400.c		\
 				plat/juno/aarch64/juno_common.c		\
 				plat/juno/plat_pm.c			\
 				plat/juno/plat_topology.c		\
-				plat/juno/plat_gic.c			\
 				plat/juno/scpi.c
 
 ifneq (${RESET_TO_BL31},0)

plat/juno/tsp/tsp-juno.mk

@@ -29,9 +29,9 @@
 #
 
 # TSP source files specific to Juno platform
-BL32_SOURCES		+=	drivers/arm/gic/gic_v2.c		\
+BL32_SOURCES		+=	drivers/arm/gic/arm_gic.c		\
+				drivers/arm/gic/gic_v2.c		\
 				plat/common/aarch64/platform_mp_stack.S	\
 				plat/juno/aarch64/juno_common.c		\
 				plat/juno/aarch64/plat_helpers.S	\
-				plat/juno/tsp/tsp_plat_setup.c		\
-				plat/juno/plat_gic.c
+				plat/juno/tsp/tsp_plat_setup.c

plat/juno/tsp/tsp_plat_setup.c

@@ -80,6 +80,7 @@ void tsp_early_platform_setup(void)
  ******************************************************************************/
 void tsp_platform_setup(void)
 {
+	plat_gic_init();
 }
 
 /*******************************************************************************