138dce70fSSoby Mathew /* 2d8d6cf24SSummer Qin * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved. 338dce70fSSoby Mathew * 4*82cb2c1aSdp-arm * SPDX-License-Identifier: BSD-3-Clause 538dce70fSSoby Mathew */ 638dce70fSSoby Mathew 738dce70fSSoby Mathew #include <plat_arm.h> 838dce70fSSoby Mathew 9d8d6cf24SSummer Qin #if ARM_PLAT_MT 10d8d6cf24SSummer Qin #pragma weak plat_arm_get_cpu_pe_count 11d8d6cf24SSummer Qin #endif 12d8d6cf24SSummer Qin 1338dce70fSSoby Mathew /****************************************************************************** 1438dce70fSSoby Mathew * This function implements a part of the critical interface between the psci 1538dce70fSSoby Mathew * generic layer and the platform that allows the former to query the platform 1638dce70fSSoby Mathew * to convert an MPIDR to a unique linear index. An error code (-1) is 1738dce70fSSoby Mathew * returned in case the MPIDR is invalid. 1838dce70fSSoby Mathew *****************************************************************************/ 1938dce70fSSoby Mathew int plat_core_pos_by_mpidr(u_register_t mpidr) 2038dce70fSSoby Mathew { 2138dce70fSSoby Mathew if (arm_check_mpidr(mpidr) == 0) 2238dce70fSSoby Mathew return plat_arm_calc_core_pos(mpidr); 2338dce70fSSoby Mathew 2438dce70fSSoby Mathew return -1; 2538dce70fSSoby Mathew } 26d8d6cf24SSummer Qin 27d8d6cf24SSummer Qin #if ARM_PLAT_MT 28d8d6cf24SSummer Qin /****************************************************************************** 29d8d6cf24SSummer Qin * This function returns the PE count within the physical cpu corresponding to 30d8d6cf24SSummer Qin * `mpidr`. Now one cpu only have one thread, so just return 1. 31d8d6cf24SSummer Qin *****************************************************************************/ 32d8d6cf24SSummer Qin unsigned int plat_arm_get_cpu_pe_count(u_register_t mpidr) 33d8d6cf24SSummer Qin { 34d8d6cf24SSummer Qin return 1; 35d8d6cf24SSummer Qin } 36d8d6cf24SSummer Qin #endif /* ARM_PLAT_MT */ 37