plat/arm: Introduce the N1SDP.
This patch adds support for the N1SDP (NeoVerse N1 System Development
Platform). It is an initial port and additional features are expected
to be added later.
The port includes only BL31 support as the System Control Processor
(SCP) is expected to take the role of primary boatloader
Change-Id: Ife17d8215a7bfcc1420204a72205e7ef920d0c10
Signed-off-by: Deepak Pandey <Deepak.Pandey@arm.com>
diff --git a/plat/arm/board/n1sdp/n1sdp_topology.c b/plat/arm/board/n1sdp/n1sdp_topology.c
new file mode 100644
index 0000000..c3b4550
--- /dev/null
+++ b/plat/arm/board/n1sdp/n1sdp_topology.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <plat_arm.h>
+
+/* Topology */
+typedef struct n1sdp_topology {
+ const unsigned char *power_tree;
+ unsigned int plat_cluster_core_count;
+} n1sdp_topology_t;
+
+/*
+ * 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 n1sdp_pd_tree_desc[] = {
+ PLAT_ARM_CLUSTER_COUNT,
+ N1SDP_MAX_CPUS_PER_CLUSTER,
+ N1SDP_MAX_CPUS_PER_CLUSTER
+};
+
+/* Topology configuration for n1sdp */
+const n1sdp_topology_t n1sdp_topology = {
+ .power_tree = n1sdp_pd_tree_desc,
+ .plat_cluster_core_count = N1SDP_MAX_CPUS_PER_CLUSTER
+};
+
+/*******************************************************************************
+ * This function returns the topology tree information.
+ ******************************************************************************/
+const unsigned char *plat_get_power_domain_tree_desc(void)
+{
+ return n1sdp_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 n1sdp_topology.plat_cluster_core_count;
+}
+
+/*******************************************************************************
+ * The array mapping platform core position (implemented by plat_my_core_pos())
+ * to the SCMI power domain ID implemented by SCP.
+ ******************************************************************************/
+const uint32_t plat_css_core_pos_to_scmi_dmn_id_map[PLATFORM_CORE_COUNT] = {
+ 0, 1, 2, 3};