1 /* 2 * Copyright (c) 2013-2015, ARM Limited and Contributors. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * Redistributions of source code must retain the above copyright notice, this 8 * list of conditions and the following disclaimer. 9 * 10 * Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 14 * Neither the name of ARM nor the names of its contributors may be used 15 * to endorse or promote products derived from this software without specific 16 * prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include <arch.h> 32 #include <plat_arm.h> 33 #include <platform_def.h> 34 #include "drivers/pwrc/fvp_pwrc.h" 35 36 /* 37 * The FVP power domain tree does not have a single system level power domain 38 * i.e. a single root node. The first entry in the power domain descriptor 39 * specifies the number of power domains at the highest power level. For the FVP 40 * this is 2 i.e. the number of cluster power domains. 41 */ 42 #define FVP_PWR_DOMAINS_AT_MAX_PWR_LVL ARM_CLUSTER_COUNT 43 44 /* The FVP power domain tree descriptor */ 45 const unsigned char arm_power_domain_tree_desc[] = { 46 /* No of root nodes */ 47 FVP_PWR_DOMAINS_AT_MAX_PWR_LVL, 48 /* No of children for the first node */ 49 PLAT_ARM_CLUSTER0_CORE_COUNT, 50 /* No of children for the second node */ 51 PLAT_ARM_CLUSTER1_CORE_COUNT 52 }; 53 54 /******************************************************************************* 55 * This function implements a part of the critical interface between the psci 56 * generic layer and the platform that allows the former to query the platform 57 * to convert an MPIDR to a unique linear index. An error code (-1) is returned 58 * in case the MPIDR is invalid. 59 ******************************************************************************/ 60 int plat_core_pos_by_mpidr(u_register_t mpidr) 61 { 62 if (arm_check_mpidr(mpidr) == -1) 63 return -1; 64 65 if (fvp_pwrc_read_psysr(mpidr) == PSYSR_INVALID) 66 return -1; 67 68 return plat_arm_calc_core_pos(mpidr); 69 } 70