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/*
* Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <platform_def.h>
#include <arch.h>
#include <drivers/arm/ccn.h>
#include <plat/arm/common/plat_arm.h>
static const unsigned char master_to_rn_id_map[] = {
PLAT_ARM_CLUSTER_TO_CCN_ID_MAP
};
static const ccn_desc_t arm_ccn_desc = {
.periphbase = PLAT_ARM_CCN_BASE,
.num_masters = ARRAY_SIZE(master_to_rn_id_map),
.master_to_rn_id_map = master_to_rn_id_map
};
CASSERT(PLAT_ARM_CLUSTER_COUNT == ARRAY_SIZE(master_to_rn_id_map),
assert_invalid_cluster_count_for_ccn_variant);
/******************************************************************************
* The following functions are defined as weak to allow a platform to override
* the way ARM CCN driver is initialised and used.
*****************************************************************************/
#pragma weak plat_arm_interconnect_init
#pragma weak plat_arm_interconnect_enter_coherency
#pragma weak plat_arm_interconnect_exit_coherency
/******************************************************************************
* Helper function to initialize ARM CCN driver.
*****************************************************************************/
void __init plat_arm_interconnect_init(void)
{
ccn_init(&arm_ccn_desc);
}
/******************************************************************************
* Helper function to place current master into coherency
*****************************************************************************/
void plat_arm_interconnect_enter_coherency(void)
{
ccn_enter_snoop_dvm_domain(1 << MPIDR_AFFLVL1_VAL(read_mpidr_el1()));
}
/******************************************************************************
* Helper function to remove current master from coherency
*****************************************************************************/
void plat_arm_interconnect_exit_coherency(void)
{
ccn_exit_snoop_dvm_domain(1 << MPIDR_AFFLVL1_VAL(read_mpidr_el1()));
}
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