plat/fvp/plat_gic.c - filogic/atf - Gitiles

 /*
  * 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 <stdint.h>
 #include <arch_helpers.h>
 #include <platform.h>
 #include <gic.h>
 #include <debug.h>


 /*******************************************************************************
  * TODO: Revisit if priorities are being set such that no non-secure interrupt
  * can have a higher priority than a secure one as recommended in the GICv2 spec
  ******************************************************************************/

 /*******************************************************************************
  * This function does some minimal GICv3 configuration. The Firmware itself does
  * not fully support GICv3 at this time and relies on GICv2 emulation as
  * provided by GICv3. This function allows software (like Linux) in later stages
  * to use full GICv3 features.
  ******************************************************************************/
 void gicv3_cpuif_setup(void)
 {
 	unsigned int scr_val, val;
 	uintptr_t base;

 	/*
 	 * When CPUs come out of reset they have their GICR_WAKER.ProcessorSleep
 	 * bit set. In order to allow interrupts to get routed to the CPU we
 	 * need to clear this bit if set and wait for GICR_WAKER.ChildrenAsleep
 	 * to clear (GICv3 Architecture specification 5.4.23).
 	 * GICR_WAKER is NOT banked per CPU, compute the correct base address
 	 * per CPU.
 	 */
 	base = gicv3_get_rdist(BASE_GICR_BASE, read_mpidr());
 	if (base == (uintptr_t)NULL) {
 		/* No re-distributor base address. This interface cannot be
 		 * configured.
 		 */
 		panic();
 	}

 	val = gicr_read_waker(base);

 	val &= ~WAKER_PS;
 	gicr_write_waker(base, val);
 	dsb();

 	/* We need to wait for ChildrenAsleep to clear. */
 	val = gicr_read_waker(base);
 	while (val & WAKER_CA) {
 		val = gicr_read_waker(base);
 	}

 	/*
 	 * We need to set SCR_EL3.NS in order to see GICv3 non-secure state.
 	 * Restore SCR_EL3.NS again before exit.
 	 */
 	scr_val = read_scr();
 	write_scr(scr_val | SCR_NS_BIT);

 	/*
 	 * By default EL2 and NS-EL1 software should be able to enable GICv3
 	 * System register access without any configuration at EL3. But it turns
 	 * out that GICC PMR as set in GICv2 mode does not affect GICv3 mode. So
 	 * we need to set it here again. In order to do that we need to enable
 	 * register access. We leave it enabled as it should be fine and might
 	 * prevent problems with later software trying to access GIC System
 	 * Registers.
 	 */
 	val = read_icc_sre_el3();
 	write_icc_sre_el3(val | ICC_SRE_EN | ICC_SRE_SRE);

 	val = read_icc_sre_el2();
 	write_icc_sre_el2(val | ICC_SRE_EN | ICC_SRE_SRE);

 	write_icc_pmr_el1(GIC_PRI_MASK);

 	/* Restore SCR_EL3 */
 	write_scr(scr_val);
 }

 /*******************************************************************************
  * This function does some minimal GICv3 configuration when cores go
  * down.
  ******************************************************************************/
 void gicv3_cpuif_deactivate(void)
 {
 	unsigned int val;
 	uintptr_t base;

 	/*
 	 * When taking CPUs down we need to set GICR_WAKER.ProcessorSleep and
 	 * wait for GICR_WAKER.ChildrenAsleep to get set.
 	 * (GICv3 Architecture specification 5.4.23).
 	 * GICR_WAKER is NOT banked per CPU, compute the correct base address
 	 * per CPU.
 	 */
 	base = gicv3_get_rdist(BASE_GICR_BASE, read_mpidr());
 	if (base == (uintptr_t)NULL) {
 		/* No re-distributor base address. This interface cannot be
 		 * configured.
 		 */
 		panic();
 	}

 	val = gicr_read_waker(base);
 	val |= WAKER_PS;
 	gicr_write_waker(base, val);
 	dsb();

 	/* We need to wait for ChildrenAsleep to set. */
 	val = gicr_read_waker(base);
 	while ((val & WAKER_CA) == 0) {
 		val = gicr_read_waker(base);
 	}
 }


 /*******************************************************************************
  * 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;

 	val = gicc_read_iidr(gicc_base);

 	/*
 	 * If GICv3 we need to do a bit of additional setup. We want to
 	 * allow default GICv2 behaviour but allow the next stage to
 	 * enable full gicv3 features.
 	 */
 	if (((val >> GICC_IIDR_ARCH_SHIFT) & GICC_IIDR_ARCH_MASK) >= 3) {
 		gicv3_cpuif_setup();
 	}

 	val = ENABLE_GRP0 | FIQ_EN | FIQ_BYP_DIS_GRP0;
 	val |= IRQ_BYP_DIS_GRP0 | FIQ_BYP_DIS_GRP1 | IRQ_BYP_DIS_GRP1;

 	gicc_write_pmr(gicc_base, GIC_PRI_MASK);
 	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);

 	val = gicc_read_iidr(gicc_base);

 	/*
 	 * If GICv3 we need to do a bit of additional setup. Make sure the
 	 * RDIST is put to sleep.
 	 */
 	if (((val >> GICC_IIDR_ARCH_SHIFT) & GICC_IIDR_ARCH_MASK) >= 3) {
 		gicv3_cpuif_deactivate();
 	}
 }

 /*******************************************************************************
  * 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)
 {
 	gicd_write_igroupr(gicd_base, 0, ~0);

 	gicd_clr_igroupr(gicd_base, IRQ_SEC_PHY_TIMER);
 	gicd_clr_igroupr(gicd_base, IRQ_SEC_SGI_0);
 	gicd_clr_igroupr(gicd_base, IRQ_SEC_SGI_1);
 	gicd_clr_igroupr(gicd_base, IRQ_SEC_SGI_2);
 	gicd_clr_igroupr(gicd_base, IRQ_SEC_SGI_3);
 	gicd_clr_igroupr(gicd_base, IRQ_SEC_SGI_4);
 	gicd_clr_igroupr(gicd_base, IRQ_SEC_SGI_5);
 	gicd_clr_igroupr(gicd_base, IRQ_SEC_SGI_6);
 	gicd_clr_igroupr(gicd_base, IRQ_SEC_SGI_7);

 	gicd_set_ipriorityr(gicd_base, IRQ_SEC_PHY_TIMER, GIC_HIGHEST_SEC_PRIORITY);
 	gicd_set_ipriorityr(gicd_base, IRQ_SEC_SGI_0, GIC_HIGHEST_SEC_PRIORITY);
 	gicd_set_ipriorityr(gicd_base, IRQ_SEC_SGI_1, GIC_HIGHEST_SEC_PRIORITY);
 	gicd_set_ipriorityr(gicd_base, IRQ_SEC_SGI_2, GIC_HIGHEST_SEC_PRIORITY);
 	gicd_set_ipriorityr(gicd_base, IRQ_SEC_SGI_3, GIC_HIGHEST_SEC_PRIORITY);
 	gicd_set_ipriorityr(gicd_base, IRQ_SEC_SGI_4, GIC_HIGHEST_SEC_PRIORITY);
 	gicd_set_ipriorityr(gicd_base, IRQ_SEC_SGI_5, GIC_HIGHEST_SEC_PRIORITY);
 	gicd_set_ipriorityr(gicd_base, IRQ_SEC_SGI_6, GIC_HIGHEST_SEC_PRIORITY);
 	gicd_set_ipriorityr(gicd_base, IRQ_SEC_SGI_7, GIC_HIGHEST_SEC_PRIORITY);

 	gicd_set_isenabler(gicd_base, IRQ_SEC_PHY_TIMER);
 	gicd_set_isenabler(gicd_base, IRQ_SEC_SGI_0);
 	gicd_set_isenabler(gicd_base, IRQ_SEC_SGI_1);
 	gicd_set_isenabler(gicd_base, IRQ_SEC_SGI_2);
 	gicd_set_isenabler(gicd_base, IRQ_SEC_SGI_3);
 	gicd_set_isenabler(gicd_base, IRQ_SEC_SGI_4);
 	gicd_set_isenabler(gicd_base, IRQ_SEC_SGI_5);
 	gicd_set_isenabler(gicd_base, IRQ_SEC_SGI_6);
 	gicd_set_isenabler(gicd_base, IRQ_SEC_SGI_7);
 }

 /*******************************************************************************
  * 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.
  ******************************************************************************/
 void gic_distif_setup(unsigned int gicd_base)
 {
 	unsigned int ctr, num_ints, ctlr;

 	/* Disable the distributor before going further */
 	ctlr = gicd_read_ctlr(gicd_base);
 	ctlr &= ~(ENABLE_GRP0 | ENABLE_GRP1);
 	gicd_write_ctlr(gicd_base, ctlr);

 	/*
 	 * Mark out non-secure interrupts. Calculate number of
 	 * IGROUPR registers to consider. Will be equal to the
 	 * number of IT_LINES
 	 */
 	num_ints = gicd_read_typer(gicd_base) & IT_LINES_NO_MASK;
 	num_ints++;
 	for (ctr = 0; ctr < num_ints; ctr++)
 		gicd_write_igroupr(gicd_base, ctr << IGROUPR_SHIFT, ~0);

 	/* Configure secure interrupts now */
 	gicd_clr_igroupr(gicd_base, IRQ_TZ_WDOG);
 	gicd_set_ipriorityr(gicd_base, IRQ_TZ_WDOG, GIC_HIGHEST_SEC_PRIORITY);
 	gicd_set_itargetsr(gicd_base, IRQ_TZ_WDOG,
 			   platform_get_core_pos(read_mpidr()));
 	gicd_set_isenabler(gicd_base, IRQ_TZ_WDOG);
 	gic_pcpu_distif_setup(gicd_base);

 	gicd_write_ctlr(gicd_base, ctlr | ENABLE_GRP0);
 }

 void gic_setup(void)
 {
 	unsigned int gicd_base, gicc_base;

 	gicd_base = platform_get_cfgvar(CONFIG_GICD_ADDR);
 	gicc_base = platform_get_cfgvar(CONFIG_GICC_ADDR);

 	gic_cpuif_setup(gicc_base);
 	gic_distif_setup(gicd_base);
 }
	/*
	* 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 <stdint.h>
	#include <arch_helpers.h>
	#include <platform.h>
	#include <gic.h>
	#include <debug.h>


	/*******************************************************************************
	* TODO: Revisit if priorities are being set such that no non-secure interrupt
	* can have a higher priority than a secure one as recommended in the GICv2 spec
	******************************************************************************/

	/*******************************************************************************
	* This function does some minimal GICv3 configuration. The Firmware itself does
	* not fully support GICv3 at this time and relies on GICv2 emulation as
	* provided by GICv3. This function allows software (like Linux) in later stages
	* to use full GICv3 features.
	******************************************************************************/
	void gicv3_cpuif_setup(void)
	{
	unsigned int scr_val, val;
	uintptr_t base;

	/*
	* When CPUs come out of reset they have their GICR_WAKER.ProcessorSleep
	* bit set. In order to allow interrupts to get routed to the CPU we
	* need to clear this bit if set and wait for GICR_WAKER.ChildrenAsleep
	* to clear (GICv3 Architecture specification 5.4.23).
	* GICR_WAKER is NOT banked per CPU, compute the correct base address
	* per CPU.
	*/
	base = gicv3_get_rdist(BASE_GICR_BASE, read_mpidr());
	if (base == (uintptr_t)NULL) {
	/* No re-distributor base address. This interface cannot be
	* configured.
	*/
	panic();
	}

	val = gicr_read_waker(base);

	val &= ~WAKER_PS;
	gicr_write_waker(base, val);
	dsb();

	/* We need to wait for ChildrenAsleep to clear. */
	val = gicr_read_waker(base);
	while (val & WAKER_CA) {
	val = gicr_read_waker(base);
	}

	/*
	* We need to set SCR_EL3.NS in order to see GICv3 non-secure state.
	* Restore SCR_EL3.NS again before exit.
	*/
	scr_val = read_scr();
	write_scr(scr_val \| SCR_NS_BIT);

	/*
	* By default EL2 and NS-EL1 software should be able to enable GICv3
	* System register access without any configuration at EL3. But it turns
	* out that GICC PMR as set in GICv2 mode does not affect GICv3 mode. So
	* we need to set it here again. In order to do that we need to enable
	* register access. We leave it enabled as it should be fine and might
	* prevent problems with later software trying to access GIC System
	* Registers.
	*/
	val = read_icc_sre_el3();
	write_icc_sre_el3(val \| ICC_SRE_EN \| ICC_SRE_SRE);

	val = read_icc_sre_el2();
	write_icc_sre_el2(val \| ICC_SRE_EN \| ICC_SRE_SRE);

	write_icc_pmr_el1(GIC_PRI_MASK);

	/* Restore SCR_EL3 */
	write_scr(scr_val);
	}

	/*******************************************************************************
	* This function does some minimal GICv3 configuration when cores go
	* down.
	******************************************************************************/
	void gicv3_cpuif_deactivate(void)
	{
	unsigned int val;
	uintptr_t base;

	/*
	* When taking CPUs down we need to set GICR_WAKER.ProcessorSleep and
	* wait for GICR_WAKER.ChildrenAsleep to get set.
	* (GICv3 Architecture specification 5.4.23).
	* GICR_WAKER is NOT banked per CPU, compute the correct base address
	* per CPU.
	*/
	base = gicv3_get_rdist(BASE_GICR_BASE, read_mpidr());
	if (base == (uintptr_t)NULL) {
	/* No re-distributor base address. This interface cannot be
	* configured.
	*/
	panic();
	}

	val = gicr_read_waker(base);
	val \|= WAKER_PS;
	gicr_write_waker(base, val);
	dsb();

	/* We need to wait for ChildrenAsleep to set. */
	val = gicr_read_waker(base);
	while ((val & WAKER_CA) == 0) {
	val = gicr_read_waker(base);
	}
	}


	/*******************************************************************************
	* 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;

	val = gicc_read_iidr(gicc_base);

	/*
	* If GICv3 we need to do a bit of additional setup. We want to
	* allow default GICv2 behaviour but allow the next stage to
	* enable full gicv3 features.
	*/
	if (((val >> GICC_IIDR_ARCH_SHIFT) & GICC_IIDR_ARCH_MASK) >= 3) {
	gicv3_cpuif_setup();
	}

	val = ENABLE_GRP0 \| FIQ_EN \| FIQ_BYP_DIS_GRP0;
	val \|= IRQ_BYP_DIS_GRP0 \| FIQ_BYP_DIS_GRP1 \| IRQ_BYP_DIS_GRP1;

	gicc_write_pmr(gicc_base, GIC_PRI_MASK);
	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);

	val = gicc_read_iidr(gicc_base);

	/*
	* If GICv3 we need to do a bit of additional setup. Make sure the
	* RDIST is put to sleep.
	*/
	if (((val >> GICC_IIDR_ARCH_SHIFT) & GICC_IIDR_ARCH_MASK) >= 3) {
	gicv3_cpuif_deactivate();
	}
	}

	/*******************************************************************************
	* 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)
	{
	gicd_write_igroupr(gicd_base, 0, ~0);

	gicd_clr_igroupr(gicd_base, IRQ_SEC_PHY_TIMER);
	gicd_clr_igroupr(gicd_base, IRQ_SEC_SGI_0);
	gicd_clr_igroupr(gicd_base, IRQ_SEC_SGI_1);
	gicd_clr_igroupr(gicd_base, IRQ_SEC_SGI_2);
	gicd_clr_igroupr(gicd_base, IRQ_SEC_SGI_3);
	gicd_clr_igroupr(gicd_base, IRQ_SEC_SGI_4);
	gicd_clr_igroupr(gicd_base, IRQ_SEC_SGI_5);
	gicd_clr_igroupr(gicd_base, IRQ_SEC_SGI_6);
	gicd_clr_igroupr(gicd_base, IRQ_SEC_SGI_7);

	gicd_set_ipriorityr(gicd_base, IRQ_SEC_PHY_TIMER, GIC_HIGHEST_SEC_PRIORITY);
	gicd_set_ipriorityr(gicd_base, IRQ_SEC_SGI_0, GIC_HIGHEST_SEC_PRIORITY);
	gicd_set_ipriorityr(gicd_base, IRQ_SEC_SGI_1, GIC_HIGHEST_SEC_PRIORITY);
	gicd_set_ipriorityr(gicd_base, IRQ_SEC_SGI_2, GIC_HIGHEST_SEC_PRIORITY);
	gicd_set_ipriorityr(gicd_base, IRQ_SEC_SGI_3, GIC_HIGHEST_SEC_PRIORITY);
	gicd_set_ipriorityr(gicd_base, IRQ_SEC_SGI_4, GIC_HIGHEST_SEC_PRIORITY);
	gicd_set_ipriorityr(gicd_base, IRQ_SEC_SGI_5, GIC_HIGHEST_SEC_PRIORITY);
	gicd_set_ipriorityr(gicd_base, IRQ_SEC_SGI_6, GIC_HIGHEST_SEC_PRIORITY);
	gicd_set_ipriorityr(gicd_base, IRQ_SEC_SGI_7, GIC_HIGHEST_SEC_PRIORITY);

	gicd_set_isenabler(gicd_base, IRQ_SEC_PHY_TIMER);
	gicd_set_isenabler(gicd_base, IRQ_SEC_SGI_0);
	gicd_set_isenabler(gicd_base, IRQ_SEC_SGI_1);
	gicd_set_isenabler(gicd_base, IRQ_SEC_SGI_2);
	gicd_set_isenabler(gicd_base, IRQ_SEC_SGI_3);
	gicd_set_isenabler(gicd_base, IRQ_SEC_SGI_4);
	gicd_set_isenabler(gicd_base, IRQ_SEC_SGI_5);
	gicd_set_isenabler(gicd_base, IRQ_SEC_SGI_6);
	gicd_set_isenabler(gicd_base, IRQ_SEC_SGI_7);
	}

	/*******************************************************************************
	* 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.
	******************************************************************************/
	void gic_distif_setup(unsigned int gicd_base)
	{
	unsigned int ctr, num_ints, ctlr;

	/* Disable the distributor before going further */
	ctlr = gicd_read_ctlr(gicd_base);
	ctlr &= ~(ENABLE_GRP0 \| ENABLE_GRP1);
	gicd_write_ctlr(gicd_base, ctlr);

	/*
	* Mark out non-secure interrupts. Calculate number of
	* IGROUPR registers to consider. Will be equal to the
	* number of IT_LINES
	*/
	num_ints = gicd_read_typer(gicd_base) & IT_LINES_NO_MASK;
	num_ints++;
	for (ctr = 0; ctr < num_ints; ctr++)
	gicd_write_igroupr(gicd_base, ctr << IGROUPR_SHIFT, ~0);

	/* Configure secure interrupts now */
	gicd_clr_igroupr(gicd_base, IRQ_TZ_WDOG);
	gicd_set_ipriorityr(gicd_base, IRQ_TZ_WDOG, GIC_HIGHEST_SEC_PRIORITY);
	gicd_set_itargetsr(gicd_base, IRQ_TZ_WDOG,
	platform_get_core_pos(read_mpidr()));
	gicd_set_isenabler(gicd_base, IRQ_TZ_WDOG);
	gic_pcpu_distif_setup(gicd_base);

	gicd_write_ctlr(gicd_base, ctlr \| ENABLE_GRP0);
	}

	void gic_setup(void)
	{
	unsigned int gicd_base, gicc_base;

	gicd_base = platform_get_cfgvar(CONFIG_GICD_ADDR);
	gicc_base = platform_get_cfgvar(CONFIG_GICC_ADDR);

	gic_cpuif_setup(gicc_base);
	gic_distif_setup(gicd_base);
	}