1 files changed, 91 insertions, 0 deletions
diff --git a/plat/brcm/common/brcm_gicv3.c b/plat/brcm/common/brcm_gicv3.c
new file mode 100644
index 0000000..c4137c0
--- /dev/null
+++ b/plat/brcm/common/brcm_gicv3.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2019-2020, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <drivers/arm/gicv3.h>
+#include <plat/common/platform.h>
+
+#include <platform_def.h>
+
+/* The GICv3 driver only needs to be initialized in EL3 */
+static uintptr_t brcm_rdistif_base_addrs[PLATFORM_CORE_COUNT];
+
+static const interrupt_prop_t brcm_interrupt_props[] = {
+	/* G1S interrupts */
+	PLAT_BRCM_G1S_IRQ_PROPS(INTR_GROUP1S),
+	/* G0 interrupts */
+	PLAT_BRCM_G0_IRQ_PROPS(INTR_GROUP0)
+};
+
+/*
+ * 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 brcm_gicv3_mpidr_hash(u_register_t mpidr)
+{
+	mpidr |= (read_mpidr_el1() & MPIDR_MT_MASK);
+	return plat_core_pos_by_mpidr(mpidr);
+}
+
+static const gicv3_driver_data_t brcm_gic_data = {
+	.gicd_base = PLAT_BRCM_GICD_BASE,
+	.gicr_base = PLAT_BRCM_GICR_BASE,
+	.interrupt_props = brcm_interrupt_props,
+	.interrupt_props_num = ARRAY_SIZE(brcm_interrupt_props),
+	.rdistif_num = PLATFORM_CORE_COUNT,
+	.rdistif_base_addrs = brcm_rdistif_base_addrs,
+	.mpidr_to_core_pos = brcm_gicv3_mpidr_hash
+};
+
+void plat_brcm_gic_driver_init(void)
+{
+	/* TODO Check if this is required to be initialized here
+	 * after getting initialized in EL3, should we re-init this here
+	 * in S-EL1
+	 */
+	gicv3_driver_init(&brcm_gic_data);
+}
+
+void plat_brcm_gic_init(void)
+{
+	gicv3_distif_init();
+	gicv3_rdistif_init(plat_my_core_pos());
+	gicv3_cpuif_enable(plat_my_core_pos());
+}
+
+void plat_brcm_gic_cpuif_enable(void)
+{
+	gicv3_cpuif_enable(plat_my_core_pos());
+}
+
+void plat_brcm_gic_cpuif_disable(void)
+{
+	gicv3_cpuif_disable(plat_my_core_pos());
+}
+
+void plat_brcm_gic_pcpu_init(void)
+{
+	gicv3_rdistif_init(plat_my_core_pos());
+}
+
+void plat_brcm_gic_redistif_on(void)
+{
+	gicv3_rdistif_on(plat_my_core_pos());
+}
+
+void plat_brcm_gic_redistif_off(void)
+{
+	gicv3_rdistif_off(plat_my_core_pos());
+}