ARM platforms: Add support for SGI575
Add support for System Guidance for Infrastructure platform SGI575.
Change-Id: I0125c2ed4469fbc8367dafcc8adce770b6b3147d
Signed-off-by: Nariman Poushin <nariman.poushin@linaro.org>
diff --git a/plat/arm/css/sgi/sgi_topology.c b/plat/arm/css/sgi/sgi_topology.c
new file mode 100644
index 0000000..2136591
--- /dev/null
+++ b/plat/arm/css/sgi/sgi_topology.c
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <plat_arm.h>
+#include <sgi_plat_config.h>
+
+/* Topology */
+/*
+ * The power domain tree descriptor. The cluster power domains are
+ * arranged so that when the PSCI generic code creates the power domain tree,
+ * the indices of the CPU power domain nodes it allocates match the linear
+ * indices returned by plat_core_pos_by_mpidr().
+ */
+const unsigned char sgi_pd_tree_desc[] = {
+ PLAT_ARM_CLUSTER_COUNT,
+ CSS_SGI_MAX_CORES_PER_CLUSTER,
+ CSS_SGI_MAX_CORES_PER_CLUSTER
+};
+
+/* Topology configuration for sgi platform */
+const css_topology_t sgi_topology = {
+ .power_tree = sgi_pd_tree_desc,
+ .plat_cluster_core_count = CSS_SGI_MAX_CORES_PER_CLUSTER
+};
+
+/*******************************************************************************
+ * This function returns the topology tree information.
+ ******************************************************************************/
+const unsigned char *plat_get_power_domain_tree_desc(void)
+{
+ return sgi_topology.power_tree;
+}
+
+/*******************************************************************************
+ * This function returns the core count within the cluster corresponding to
+ * `mpidr`.
+ ******************************************************************************/
+unsigned int plat_arm_get_cluster_core_count(u_register_t mpidr)
+{
+ return sgi_topology.plat_cluster_core_count;
+}