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 <plat_arm.h> 8 #include <platform.h> 9 10 #if ARM_PLAT_MT 11 #pragma weak plat_arm_get_cpu_pe_count 12 #endif 13 14 /****************************************************************************** 15 * This function implements a part of the critical interface between the psci 16 * generic layer and the platform that allows the former to query the platform 17 * to convert an MPIDR to a unique linear index. An error code (-1) is 18 * returned in case the MPIDR is invalid. 19 *****************************************************************************/ 20 int plat_core_pos_by_mpidr(u_register_t mpidr) 21 { 22 if (arm_check_mpidr(mpidr) == 0) 23 return plat_arm_calc_core_pos(mpidr); 24 25 return -1; 26 } 27 28 #if ARM_PLAT_MT 29 /****************************************************************************** 30 * This function returns the PE count within the physical cpu corresponding to 31 * `mpidr`. Now one cpu only have one thread, so just return 1. 32 *****************************************************************************/ 33 unsigned int plat_arm_get_cpu_pe_count(u_register_t mpidr) 34 { 35 return 1; 36 } 37 #endif /* ARM_PLAT_MT */ 38