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/*
* Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <platform_def.h>
#include <drivers/arm/gicv2.h>
#include <plat/arm/common/plat_arm.h>
#include <plat/common/platform.h>
/******************************************************************************
* The following functions are defined as weak to allow a platform to override
* the way the GICv2 driver is initialised and used.
*****************************************************************************/
#pragma weak plat_arm_gic_driver_init
#pragma weak plat_arm_gic_init
#pragma weak plat_arm_gic_cpuif_enable
#pragma weak plat_arm_gic_cpuif_disable
#pragma weak plat_arm_gic_pcpu_init
/******************************************************************************
* On a GICv2 system, the Group 1 secure interrupts are treated as Group 0
* interrupts.
*****************************************************************************/
static const interrupt_prop_t arm_interrupt_props[] = {
PLAT_ARM_G1S_IRQ_PROPS(GICV2_INTR_GROUP0),
PLAT_ARM_G0_IRQ_PROPS(GICV2_INTR_GROUP0)
};
static unsigned int target_mask_array[PLATFORM_CORE_COUNT];
static const gicv2_driver_data_t arm_gic_data = {
.gicd_base = PLAT_ARM_GICD_BASE,
.gicc_base = PLAT_ARM_GICC_BASE,
.interrupt_props = arm_interrupt_props,
.interrupt_props_num = ARRAY_SIZE(arm_interrupt_props),
.target_masks = target_mask_array,
.target_masks_num = ARRAY_SIZE(target_mask_array),
};
/******************************************************************************
* ARM common helper to initialize the GICv2 only driver.
*****************************************************************************/
void plat_arm_gic_driver_init(void)
{
gicv2_driver_init(&arm_gic_data);
}
void plat_arm_gic_init(void)
{
gicv2_distif_init();
gicv2_pcpu_distif_init();
gicv2_set_pe_target_mask(plat_my_core_pos());
gicv2_cpuif_enable();
}
/******************************************************************************
* ARM common helper to enable the GICv2 CPU interface
*****************************************************************************/
void plat_arm_gic_cpuif_enable(void)
{
gicv2_cpuif_enable();
}
/******************************************************************************
* ARM common helper to disable the GICv2 CPU interface
*****************************************************************************/
void plat_arm_gic_cpuif_disable(void)
{
gicv2_cpuif_disable();
}
/******************************************************************************
* ARM common helper to initialize the per cpu distributor interface in GICv2
*****************************************************************************/
void plat_arm_gic_pcpu_init(void)
{
gicv2_pcpu_distif_init();
gicv2_set_pe_target_mask(plat_my_core_pos());
}
/******************************************************************************
* Stubs for Redistributor power management. Although GICv2 doesn't have
* Redistributor interface, these are provided for the sake of uniform GIC API
*****************************************************************************/
void plat_arm_gic_redistif_on(void)
{
return;
}
void plat_arm_gic_redistif_off(void)
{
return;
}
/******************************************************************************
* ARM common helper to save & restore the GICv3 on resume from system suspend.
* The normal world currently takes care of saving and restoring the GICv2
* registers due to legacy reasons. Hence we just initialize the Distributor
* on resume from system suspend.
*****************************************************************************/
void plat_arm_gic_save(void)
{
return;
}
void plat_arm_gic_resume(void)
{
gicv2_distif_init();
gicv2_pcpu_distif_init();
}
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