plat/imx/common/imx8_topology.c

   1 /*
   2  * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
   3  *
   4  * SPDX-License-Identifier: BSD-3-Clause
   5  */
   6
   7 #include <arch.h>
   8 #include <arch_helpers.h>
   9 #include <platform.h>
  10
  11 const unsigned char imx_power_domain_tree_desc[] = {
  12         PWR_DOMAIN_AT_MAX_LVL,
  13         PLATFORM_CLUSTER_COUNT,
  14         PLATFORM_CLUSTER0_CORE_COUNT,
  15         PLATFORM_CLUSTER1_CORE_COUNT,
  16 };
  17
  18 const unsigned char *plat_get_power_domain_tree_desc(void)
  19 {
  20         return imx_power_domain_tree_desc;
  21 }
  22
  23 int plat_core_pos_by_mpidr(u_register_t mpidr)
  24 {
  25         unsigned int cluster_id, cpu_id;
  26
  27         mpidr &= MPIDR_AFFINITY_MASK;
  28
  29         if (mpidr & ~(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK))
  30                 return -1;
  31
  32         cluster_id = MPIDR_AFFLVL1_VAL(mpidr);
  33         cpu_id = MPIDR_AFFLVL0_VAL(mpidr);
  34
  35         if (cluster_id > PLATFORM_CLUSTER_COUNT ||
  36                 cpu_id > PLATFORM_MAX_CPU_PER_CLUSTER)
  37                 return -1;
  38
  39         return (cpu_id + (cluster_id * 4));
  40 }