1 /* 2 * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <plat/common/platform.h> 8 9 #include <arm_def.h> 10 #include <css_pm.h> 11 #include <plat_arm.h> 12 #include "juno_def.h" 13 #include "../../css/drivers/scmi/scmi.h" 14 #include "../../css/drivers/mhu/css_mhu_doorbell.h" 15 16 #if CSS_USE_SCMI_SDS_DRIVER 17 static scmi_channel_plat_info_t juno_scmi_plat_info = { 18 .scmi_mbx_mem = CSS_SCMI_PAYLOAD_BASE, 19 .db_reg_addr = PLAT_CSS_MHU_BASE + CSS_SCMI_MHU_DB_REG_OFF, 20 .db_preserve_mask = 0xfffffffe, 21 .db_modify_mask = 0x1, 22 .ring_doorbell = &mhu_ring_doorbell, 23 }; 24 25 scmi_channel_plat_info_t *plat_css_get_scmi_info() 26 { 27 return &juno_scmi_plat_info; 28 } 29 30 #endif 31 /* 32 * On Juno, the system power level is the highest power level. 33 * The first entry in the power domain descriptor specifies the 34 * number of system power domains i.e. 1. 35 */ 36 #define JUNO_PWR_DOMAINS_AT_MAX_PWR_LVL ARM_SYSTEM_COUNT 37 38 /* 39 * The Juno power domain tree descriptor. The cluster power domains 40 * are arranged so that when the PSCI generic code creates the power 41 * domain tree, the indices of the CPU power domain nodes it allocates 42 * match the linear indices returned by plat_core_pos_by_mpidr() 43 * i.e. CLUSTER1 CPUs are allocated indices from 0 to 3 and the higher 44 * indices for CLUSTER0 CPUs. 45 */ 46 static const unsigned char juno_power_domain_tree_desc[] = { 47 /* No of root nodes */ 48 JUNO_PWR_DOMAINS_AT_MAX_PWR_LVL, 49 /* No of children for the root node */ 50 JUNO_CLUSTER_COUNT, 51 /* No of children for the first cluster node */ 52 JUNO_CLUSTER1_CORE_COUNT, 53 /* No of children for the second cluster node */ 54 JUNO_CLUSTER0_CORE_COUNT 55 }; 56 57 /******************************************************************************* 58 * This function returns the Juno topology tree information. 59 ******************************************************************************/ 60 const unsigned char *plat_get_power_domain_tree_desc(void) 61 { 62 return juno_power_domain_tree_desc; 63 } 64 65 /******************************************************************************* 66 * This function returns the core count within the cluster corresponding to 67 * `mpidr`. 68 ******************************************************************************/ 69 unsigned int plat_arm_get_cluster_core_count(u_register_t mpidr) 70 { 71 return (((mpidr & (u_register_t) 0x100) != 0U) ? 72 JUNO_CLUSTER1_CORE_COUNT : JUNO_CLUSTER0_CORE_COUNT); 73 } 74 75 /* 76 * The array mapping platform core position (implemented by plat_my_core_pos()) 77 * to the SCMI power domain ID implemented by SCP. 78 */ 79 const uint32_t plat_css_core_pos_to_scmi_dmn_id_map[PLATFORM_CORE_COUNT] = { 80 2, 3, 4, 5, 0, 1 }; 81