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