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https://github.com/ARM-software/arm-trusted-firmware.git
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82cb2c1ad9
To make software license auditing simpler, use SPDX[0] license identifiers instead of duplicating the license text in every file. NOTE: Files that have been imported by FreeBSD have not been modified. [0]: https://spdx.org/ Change-Id: I80a00e1f641b8cc075ca5a95b10607ed9ed8761a Signed-off-by: dp-arm <dimitris.papastamos@arm.com>
56 lines
1.9 KiB
C
56 lines
1.9 KiB
C
/*
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* Copyright (c) 2016, 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 <arch.h>
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#include <ccn.h>
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#include <plat_arm.h>
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#include <platform_def.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 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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