1 /*
2 * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 #include <plat_arm.h>
8
9 #if ARM_PLAT_MT
10 #pragma weak plat_arm_get_cpu_pe_count
11 #endif
12
13 /******************************************************************************
14 * This function implements a part of the critical interface between the psci
15 * generic layer and the platform that allows the former to query the platform
16 * to convert an MPIDR to a unique linear index. An error code (-1) is
17 * returned in case the MPIDR is invalid.
18 *****************************************************************************/
plat_core_pos_by_mpidr(u_register_t mpidr)19 int plat_core_pos_by_mpidr(u_register_t mpidr)
20 {
21 if (arm_check_mpidr(mpidr) == 0)
22 return plat_arm_calc_core_pos(mpidr);
23
24 return -1;
25 }
26
27 #if ARM_PLAT_MT
28 /******************************************************************************
29 * This function returns the PE count within the physical cpu corresponding to
30 * `mpidr`. Now one cpu only have one thread, so just return 1.
31 *****************************************************************************/
plat_arm_get_cpu_pe_count(u_register_t mpidr)32 unsigned int plat_arm_get_cpu_pe_count(u_register_t mpidr)
33 {
34 return 1;
35 }
36 #endif /* ARM_PLAT_MT */
37