| /* |
| * Copyright (c) 2013-2015, ARM Limited and Contributors. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * Redistributions of source code must retain the above copyright notice, this |
| * list of conditions and the following disclaimer. |
| * |
| * Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * |
| * Neither the name of ARM nor the names of its contributors may be used |
| * to endorse or promote products derived from this software without specific |
| * prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <arch.h> |
| #include <plat_arm.h> |
| #include <platform_def.h> |
| #include "drivers/pwrc/fvp_pwrc.h" |
| |
| /* |
| * The FVP power domain tree does not have a single system level power domain |
| * i.e. a single root node. The first entry in the power domain descriptor |
| * specifies the number of power domains at the highest power level. For the FVP |
| * this is 2 i.e. the number of cluster power domains. |
| */ |
| #define FVP_PWR_DOMAINS_AT_MAX_PWR_LVL ARM_CLUSTER_COUNT |
| |
| /* The FVP power domain tree descriptor */ |
| const unsigned char arm_power_domain_tree_desc[] = { |
| /* No of root nodes */ |
| FVP_PWR_DOMAINS_AT_MAX_PWR_LVL, |
| /* No of children for the first node */ |
| PLAT_ARM_CLUSTER0_CORE_COUNT, |
| /* No of children for the second node */ |
| PLAT_ARM_CLUSTER1_CORE_COUNT |
| }; |
| |
| /******************************************************************************* |
| * This function implements a part of the critical interface between the psci |
| * generic layer and the platform that allows the former to query the platform |
| * to convert an MPIDR to a unique linear index. An error code (-1) is returned |
| * in case the MPIDR is invalid. |
| ******************************************************************************/ |
| int plat_core_pos_by_mpidr(u_register_t mpidr) |
| { |
| if (arm_check_mpidr(mpidr) == -1) |
| return -1; |
| |
| if (fvp_pwrc_read_psysr(mpidr) == PSYSR_INVALID) |
| return -1; |
| |
| return plat_arm_calc_core_pos(mpidr); |
| } |