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/*
* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <arm_def.h>
#include <plat_arm.h>
#include "juno_def.h"
/*
* On Juno, the system power level is the highest power level.
* The first entry in the power domain descriptor specifies the
* number of system power domains i.e. 1.
*/
#define JUNO_PWR_DOMAINS_AT_MAX_PWR_LVL ARM_SYSTEM_COUNT
/*
* The Juno power domain tree descriptor. The cluster power domains
* are arranged so that when the PSCI generic code creates the power
* domain tree, the indices of the CPU power domain nodes it allocates
* match the linear indices returned by plat_core_pos_by_mpidr()
* i.e. CLUSTER1 CPUs are allocated indices from 0 to 3 and the higher
* indices for CLUSTER0 CPUs.
*/
const unsigned char juno_power_domain_tree_desc[] = {
/* No of root nodes */
JUNO_PWR_DOMAINS_AT_MAX_PWR_LVL,
/* No of children for the root node */
JUNO_CLUSTER_COUNT,
/* No of children for the first cluster node */
JUNO_CLUSTER1_CORE_COUNT,
/* No of children for the second cluster node */
JUNO_CLUSTER0_CORE_COUNT
};
/*******************************************************************************
* This function returns the Juno topology tree information.
******************************************************************************/
const unsigned char *plat_get_power_domain_tree_desc(void)
{
return juno_power_domain_tree_desc;
}
/*******************************************************************************
* This function returns the core count within the cluster corresponding to
* `mpidr`.
******************************************************************************/
unsigned int plat_arm_get_cluster_core_count(u_register_t mpidr)
{
return (((mpidr) & 0x100) ? JUNO_CLUSTER1_CORE_COUNT :\
JUNO_CLUSTER0_CORE_COUNT);
}
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