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/*
* 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);
}