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Diffstat (limited to '')
| -rw-r--r-- | plat/arm/common/arm_gicv2.c | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/plat/arm/common/arm_gicv2.c b/plat/arm/common/arm_gicv2.c new file mode 100644 index 0000000..80a845f --- /dev/null +++ b/plat/arm/common/arm_gicv2.c @@ -0,0 +1,114 @@ +/* + * 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(); +} |