1 files changed, 210 insertions, 0 deletions
diff --git a/plat/marvell/armada/common/marvell_gicv3.c b/plat/marvell/armada/common/marvell_gicv3.c
new file mode 100644
index 0000000..0bd5545
--- /dev/null
+++ b/plat/marvell/armada/common/marvell_gicv3.c
@@ -0,0 +1,210 @@
+/*
+ * Copyright (C) 2018 Marvell International Ltd.
+ *
+ * SPDX-License-Identifier:     BSD-3-Clause
+ * https://spdx.org/licenses
+ */
+
+#include <platform_def.h>
+
+#include <common/debug.h>
+#include <common/interrupt_props.h>
+#include <drivers/arm/gicv3.h>
+#include <plat/common/platform.h>
+
+#include <marvell_def.h>
+#include <plat_marvell.h>
+
+/******************************************************************************
+ * The following functions are defined as weak to allow a platform to override
+ * the way the GICv3 driver is initialised and used.
+ ******************************************************************************
+ */
+#pragma weak plat_marvell_gic_driver_init
+#pragma weak plat_marvell_gic_init
+#pragma weak plat_marvell_gic_cpuif_enable
+#pragma weak plat_marvell_gic_cpuif_disable
+#pragma weak plat_marvell_gic_pcpu_init
+
+/* The GICv3 driver only needs to be initialized in EL3 */
+static uintptr_t rdistif_base_addrs[PLATFORM_CORE_COUNT];
+
+static const interrupt_prop_t marvell_interrupt_props[] = {
+	PLAT_MARVELL_G1S_IRQ_PROPS(INTR_GROUP1S),
+	PLAT_MARVELL_G0_IRQ_PROPS(INTR_GROUP0)
+};
+
+/*
+ * We save and restore the GICv3 context on system suspend. Allocate the
+ * data in the designated EL3 Secure carve-out memory
+ */
+static gicv3_redist_ctx_t rdist_ctx __section("arm_el3_tzc_dram");
+static gicv3_dist_ctx_t dist_ctx __section("arm_el3_tzc_dram");
+
+/*
+ * MPIDR hashing function for translating MPIDRs read from GICR_TYPER register
+ * to core position.
+ *
+ * Calculating core position is dependent on MPIDR_EL1.MT bit. However, affinity
+ * values read from GICR_TYPER don't have an MT field. To reuse the same
+ * translation used for CPUs, we insert MT bit read from the PE's MPIDR into
+ * that read from GICR_TYPER.
+ *
+ * Assumptions:
+ *
+ *   - All CPUs implemented in the system have MPIDR_EL1.MT bit set;
+ *   - No CPUs implemented in the system use affinity level 3.
+ */
+static unsigned int marvell_gicv3_mpidr_hash(u_register_t mpidr)
+{
+	mpidr |= (read_mpidr_el1() & MPIDR_MT_MASK);
+	return plat_marvell_calc_core_pos(mpidr);
+}
+
+const gicv3_driver_data_t marvell_gic_data = {
+	.gicd_base = PLAT_MARVELL_GICD_BASE,
+	.gicr_base = PLAT_MARVELL_GICR_BASE,
+	.interrupt_props = marvell_interrupt_props,
+	.interrupt_props_num = ARRAY_SIZE(marvell_interrupt_props),
+	.rdistif_num = PLATFORM_CORE_COUNT,
+	.rdistif_base_addrs = rdistif_base_addrs,
+	.mpidr_to_core_pos = marvell_gicv3_mpidr_hash
+};
+
+void plat_marvell_gic_driver_init(void)
+{
+	/*
+	 * The GICv3 driver is initialized in EL3 and does not need
+	 * to be initialized again in SEL1. This is because the S-EL1
+	 * can use GIC system registers to manage interrupts and does
+	 * not need GIC interface base addresses to be configured.
+	 */
+#if IMAGE_BL31
+	gicv3_driver_init(&marvell_gic_data);
+#endif
+}
+
+/******************************************************************************
+ * Marvell common helper to initialize the GIC. Only invoked by BL31
+ ******************************************************************************
+ */
+void plat_marvell_gic_init(void)
+{
+	/* Initialize GIC-600 Multi Chip feature,
+	 * only if the maximum number of north bridges
+	 * is more than 1 - otherwise no need for multi
+	 * chip feature initialization
+	 */
+#if (PLAT_MARVELL_NORTHB_COUNT > 1)
+	if (gic600_multi_chip_init())
+		ERROR("GIC-600 Multi Chip initialization failed\n");
+#endif
+	gicv3_distif_init();
+	gicv3_rdistif_init(plat_my_core_pos());
+	gicv3_cpuif_enable(plat_my_core_pos());
+}
+
+/******************************************************************************
+ * Marvell common helper to enable the GIC CPU interface
+ ******************************************************************************
+ */
+void plat_marvell_gic_cpuif_enable(void)
+{
+	gicv3_cpuif_enable(plat_my_core_pos());
+}
+
+/******************************************************************************
+ * Marvell common helper to disable the GIC CPU interface
+ ******************************************************************************
+ */
+void plat_marvell_gic_cpuif_disable(void)
+{
+	gicv3_cpuif_disable(plat_my_core_pos());
+}
+
+/******************************************************************************
+ * Marvell common helper to init. the per-cpu redistributor interface in GICv3
+ ******************************************************************************
+ */
+void plat_marvell_gic_pcpu_init(void)
+{
+	gicv3_rdistif_init(plat_my_core_pos());
+}
+
+/******************************************************************************
+ * Marvell common helper to save SPI irq states in GICv3
+ ******************************************************************************
+ */
+void plat_marvell_gic_irq_save(void)
+{
+
+	/*
+	 * If an ITS is available, save its context before
+	 * the Redistributor using:
+	 * gicv3_its_save_disable(gits_base, &its_ctx[i])
+	 * Additionally, an implementation-defined sequence may
+	 * be required to save the whole ITS state.
+	 */
+
+	/*
+	 * Save the GIC Redistributors and ITS contexts before the
+	 * Distributor context. As we only handle SYSTEM SUSPEND API,
+	 * we only need to save the context of the CPU that is issuing
+	 * the SYSTEM SUSPEND call, i.e. the current CPU.
+	 */
+	gicv3_rdistif_save(plat_my_core_pos(), &rdist_ctx);
+
+	/* Save the GIC Distributor context */
+	gicv3_distif_save(&dist_ctx);
+
+	/*
+	 * From here, all the components of the GIC can be safely powered down
+	 * as long as there is an alternate way to handle wakeup interrupt
+	 * sources.
+	 */
+}
+
+/******************************************************************************
+ * Marvell common helper to restore SPI irq states in GICv3
+ ******************************************************************************
+ */
+void plat_marvell_gic_irq_restore(void)
+{
+	/* Restore the GIC Distributor context */
+	gicv3_distif_init_restore(&dist_ctx);
+
+	/*
+	 * Restore the GIC Redistributor and ITS contexts after the
+	 * Distributor context. As we only handle SYSTEM SUSPEND API,
+	 * we only need to restore the context of the CPU that issued
+	 * the SYSTEM SUSPEND call.
+	 */
+	gicv3_rdistif_init_restore(plat_my_core_pos(), &rdist_ctx);
+
+	/*
+	 * If an ITS is available, restore its context after
+	 * the Redistributor using:
+	 * gicv3_its_restore(gits_base, &its_ctx[i])
+	 * An implementation-defined sequence may be required to
+	 * restore the whole ITS state. The ITS must also be
+	 * re-enabled after this sequence has been executed.
+	 */
+}
+
+/******************************************************************************
+ * Marvell common helper to save per-cpu PPI irq states in GICv3
+ ******************************************************************************
+ */
+void plat_marvell_gic_irq_pcpu_save(void)
+{
+	gicv3_rdistif_save(plat_my_core_pos(), &rdist_ctx);
+}
+
+/******************************************************************************
+ * Marvell common helper to restore per-cpu PPI irq states in GICv3
+ ******************************************************************************
+ */
+void plat_marvell_gic_irq_pcpu_restore(void)
+{
+	gicv3_rdistif_init_restore(plat_my_core_pos(), &rdist_ctx);
+}