1 /* 2 * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <arm_def.h> 8 #include <plat_arm.h> 9 #include "juno_def.h" 10 11 /* 12 * On Juno, the system power level is the highest power level. 13 * The first entry in the power domain descriptor specifies the 14 * number of system power domains i.e. 1. 15 */ 16 #define JUNO_PWR_DOMAINS_AT_MAX_PWR_LVL ARM_SYSTEM_COUNT 17 18 /* 19 * The Juno power domain tree descriptor. The cluster power domains 20 * are arranged so that when the PSCI generic code creates the power 21 * domain tree, the indices of the CPU power domain nodes it allocates 22 * match the linear indices returned by plat_core_pos_by_mpidr() 23 * i.e. CLUSTER1 CPUs are allocated indices from 0 to 3 and the higher 24 * indices for CLUSTER0 CPUs. 25 */ 26 const unsigned char juno_power_domain_tree_desc[] = { 27 /* No of root nodes */ 28 JUNO_PWR_DOMAINS_AT_MAX_PWR_LVL, 29 /* No of children for the root node */ 30 JUNO_CLUSTER_COUNT, 31 /* No of children for the first cluster node */ 32 JUNO_CLUSTER1_CORE_COUNT, 33 /* No of children for the second cluster node */ 34 JUNO_CLUSTER0_CORE_COUNT 35 }; 36 37 /******************************************************************************* 38 * This function returns the Juno topology tree information. 39 ******************************************************************************/ 40 const unsigned char *plat_get_power_domain_tree_desc(void) 41 { 42 return juno_power_domain_tree_desc; 43 } 44 45 /******************************************************************************* 46 * This function returns the core count within the cluster corresponding to 47 * `mpidr`. 48 ******************************************************************************/ 49 unsigned int plat_arm_get_cluster_core_count(u_register_t mpidr) 50 { 51 return (((mpidr) & 0x100) ? JUNO_CLUSTER1_CORE_COUNT :\ 52 JUNO_CLUSTER0_CORE_COUNT); 53 } 54 55 /* 56 * The array mapping platform core position (implemented by plat_my_core_pos()) 57 * to the SCMI power domain ID implemented by SCP. 58 */ 59 const uint32_t plat_css_core_pos_to_scmi_dmn_id_map[PLATFORM_CORE_COUNT] = { 60 2, 3, 4, 5, 0, 1 }; 61
