plat/socionext/uniphier/uniphier_topology.c

   1 /*
   2  * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
   3  *
   4  * SPDX-License-Identifier: BSD-3-Clause
   5  */
   6
   7 #include <arch.h>
   8 #include <plat/common/platform.h>
   9
  10 #include "uniphier.h"
  11
  12 static unsigned char uniphier_power_domain_tree_desc[UNIPHIER_CLUSTER_COUNT + 1];
  13
  14 const unsigned char *plat_get_power_domain_tree_desc(void)
  15 {
  16         int i;
  17
  18         uniphier_power_domain_tree_desc[0] = UNIPHIER_CLUSTER_COUNT;
  19
  20         for (i = 0; i < UNIPHIER_CLUSTER_COUNT; i++)
  21                 uniphier_power_domain_tree_desc[i + 1] =
  22                                                 UNIPHIER_MAX_CPUS_PER_CLUSTER;
  23
  24         return uniphier_power_domain_tree_desc;
  25 }
  26
  27 int plat_core_pos_by_mpidr(u_register_t mpidr)
  28 {
  29         unsigned int cluster_id, cpu_id;
  30
  31         cluster_id = (mpidr >> MPIDR_AFF1_SHIFT) & MPIDR_AFFLVL_MASK;
  32         if (cluster_id >= UNIPHIER_CLUSTER_COUNT)
  33                 return -1;
  34
  35         cpu_id = (mpidr >> MPIDR_AFF0_SHIFT) & MPIDR_AFFLVL_MASK;
  36         if (cpu_id >= UNIPHIER_MAX_CPUS_PER_CLUSTER)
  37                 return -1;
  38
  39         return uniphier_calc_core_pos(mpidr);
  40 }