1 files changed, 148 insertions, 0 deletions
diff --git a/plat/marvell/armada/common/marvell_gicv2.c b/plat/marvell/armada/common/marvell_gicv2.c
new file mode 100644
index 0000000..2505c9f
--- /dev/null
+++ b/plat/marvell/armada/common/marvell_gicv2.c
@@ -0,0 +1,148 @@
+/*
+ * Copyright (C) 2018 Marvell International Ltd.
+ *
+ * SPDX-License-Identifier:     BSD-3-Clause
+ * https://spdx.org/licenses
+ */
+
+#include <platform_def.h>
+
+#include <bl31/interrupt_mgmt.h>
+#include <common/debug.h>
+#include <drivers/arm/gicv2.h>
+#include <lib/bakery_lock.h>
+#include <lib/mmio.h>
+#include <plat/common/platform.h>
+
+#include <plat_marvell.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_marvell_gic_driver_init
+#pragma weak plat_marvell_gic_init
+
+#define A7K8K_PIC_CAUSE_REG		0xf03f0100
+#define A7K8K_PIC0_MASK_REG		0xf03f0108
+
+#define A7K8K_PIC_PMUOF_IRQ_MASK	(1 << 17)
+
+#define A7K8K_PIC_MAX_IRQS		32
+#define A7K8K_PIC_MAX_IRQ_MASK		((1UL << A7K8K_PIC_MAX_IRQS) - 1)
+
+#define A7K8K_ODMIN_SET_REG		0xf0300040
+#define A7K8K_ODMI_PMU_IRQ(idx)		((2 + idx) << 12)
+
+#define A7K8K_ODMI_PMU_GIC_IRQ(idx)	(130 + idx)
+
+static DEFINE_BAKERY_LOCK(a7k8k_irq_lock);
+
+/*
+ * On a GICv2 system, the Group 1 secure interrupts are treated as Group 0
+ * interrupts.
+ */
+static const interrupt_prop_t marvell_interrupt_props[] = {
+	PLAT_MARVELL_G1S_IRQ_PROPS(GICV2_INTR_GROUP0),
+	PLAT_MARVELL_G0_IRQ_PROPS(GICV2_INTR_GROUP0)
+};
+
+static unsigned int target_mask_array[PLATFORM_CORE_COUNT];
+
+/*
+ * Ideally `marvell_gic_data` structure definition should be a `const` but it is
+ * kept as modifiable for overwriting with different GICD and GICC base when
+ * running on FVP with VE memory map.
+ */
+static gicv2_driver_data_t marvell_gic_data = {
+	.gicd_base = PLAT_MARVELL_GICD_BASE,
+	.gicc_base = PLAT_MARVELL_GICC_BASE,
+	.interrupt_props = marvell_interrupt_props,
+	.interrupt_props_num = ARRAY_SIZE(marvell_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_marvell_gic_driver_init(void)
+{
+	gicv2_driver_init(&marvell_gic_data);
+}
+
+static uint64_t a7k8k_pmu_interrupt_handler(uint32_t id,
+					  uint32_t flags,
+					  void *handle,
+					  void *cookie)
+{
+	unsigned int idx = plat_my_core_pos();
+	uint32_t irq;
+
+	bakery_lock_get(&a7k8k_irq_lock);
+
+	/* Acknowledge IRQ */
+	irq = plat_ic_acknowledge_interrupt();
+
+	plat_ic_end_of_interrupt(irq);
+
+	if (irq != MARVELL_IRQ_PIC0) {
+		bakery_lock_release(&a7k8k_irq_lock);
+		return 0;
+	}
+
+	/* Acknowledge PMU overflow IRQ in PIC0 */
+	mmio_setbits_32(A7K8K_PIC_CAUSE_REG, A7K8K_PIC_PMUOF_IRQ_MASK);
+
+	/* Trigger ODMI Frame IRQ */
+	mmio_write_32(A7K8K_ODMIN_SET_REG, A7K8K_ODMI_PMU_IRQ(idx));
+
+	bakery_lock_release(&a7k8k_irq_lock);
+
+	return 0;
+}
+
+void mvebu_pmu_interrupt_enable(void)
+{
+	unsigned int idx;
+	uint32_t flags;
+	int32_t rc;
+
+	/* Reset PIC */
+	mmio_write_32(A7K8K_PIC_CAUSE_REG, A7K8K_PIC_MAX_IRQ_MASK);
+	/* Unmask PMU overflow IRQ in PIC0 */
+	mmio_clrbits_32(A7K8K_PIC0_MASK_REG, A7K8K_PIC_PMUOF_IRQ_MASK);
+
+	/* Configure ODMI Frame IRQs as edge triggered */
+	for (idx = 0; idx < PLATFORM_CORE_COUNT; idx++)
+		gicv2_interrupt_set_cfg(A7K8K_ODMI_PMU_GIC_IRQ(idx),
+					GIC_INTR_CFG_EDGE);
+
+	/*
+	 * Register IRQ handler as INTR_TYPE_S_EL1 as its the only valid type
+	 * for GICv2 in ARM-TF.
+	 */
+	flags = 0U;
+	set_interrupt_rm_flag((flags), (NON_SECURE));
+	rc = register_interrupt_type_handler(INTR_TYPE_S_EL1,
+					     a7k8k_pmu_interrupt_handler,
+					     flags);
+	if (rc != 0)
+		panic();
+}
+
+void mvebu_pmu_interrupt_disable(void)
+{
+	/* Reset PIC */
+	mmio_write_32(A7K8K_PIC_CAUSE_REG, A7K8K_PIC_MAX_IRQ_MASK);
+	/* Mask PMU overflow IRQ in PIC0 */
+	mmio_setbits_32(A7K8K_PIC0_MASK_REG, A7K8K_PIC_PMUOF_IRQ_MASK);
+}
+
+void plat_marvell_gic_init(void)
+{
+	gicv2_distif_init();
+	gicv2_pcpu_distif_init();
+	gicv2_set_pe_target_mask(plat_my_core_pos());
+	gicv2_cpuif_enable();
+}