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51 lines
1.8 KiB
51 lines
1.8 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/cci.h>
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#include <lib/utils.h>
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#include <plat/arm/common/plat_arm.h>
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static const int cci_map[] = {
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PLAT_ARM_CCI_CLUSTER0_SL_IFACE_IX,
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PLAT_ARM_CCI_CLUSTER1_SL_IFACE_IX
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};
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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 CCI 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 CCI driver.
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*****************************************************************************/
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void __init plat_arm_interconnect_init(void)
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{
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cci_init(PLAT_ARM_CCI_BASE, cci_map, ARRAY_SIZE(cci_map));
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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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cci_enable_snoop_dvm_reqs(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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cci_disable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr_el1()));
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}
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