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Vikram Kanigiri6355f232016-02-15 11:54:14 +00001/*
Daniel Boulbyc9263e62018-09-18 13:36:39 +01002 * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
Vikram Kanigiri6355f232016-02-15 11:54:14 +00003 *
dp-arm82cb2c12017-05-03 09:38:09 +01004 * SPDX-License-Identifier: BSD-3-Clause
Vikram Kanigiri6355f232016-02-15 11:54:14 +00005 */
6
Vikram Kanigiri6355f232016-02-15 11:54:14 +00007#include <platform_def.h>
Antonio Nino Diaz09d40e02018-12-14 00:18:21 +00008
9#include <arch.h>
10#include <drivers/arm/cci.h>
11#include <lib/utils.h>
Antonio Nino Diazbd9344f2019-01-25 14:30:04 +000012#include <plat/arm/common/plat_arm.h>
Vikram Kanigiri6355f232016-02-15 11:54:14 +000013
14static const int cci_map[] = {
15 PLAT_ARM_CCI_CLUSTER0_SL_IFACE_IX,
16 PLAT_ARM_CCI_CLUSTER1_SL_IFACE_IX
17};
18
19/******************************************************************************
20 * The following functions are defined as weak to allow a platform to override
21 * the way ARM CCI driver is initialised and used.
22 *****************************************************************************/
23#pragma weak plat_arm_interconnect_init
24#pragma weak plat_arm_interconnect_enter_coherency
25#pragma weak plat_arm_interconnect_exit_coherency
26
27
28/******************************************************************************
29 * Helper function to initialize ARM CCI driver.
30 *****************************************************************************/
Daniel Boulbyc9263e62018-09-18 13:36:39 +010031void __init plat_arm_interconnect_init(void)
Vikram Kanigiri6355f232016-02-15 11:54:14 +000032{
33 cci_init(PLAT_ARM_CCI_BASE, cci_map, ARRAY_SIZE(cci_map));
34}
35
36/******************************************************************************
37 * Helper function to place current master into coherency
38 *****************************************************************************/
39void plat_arm_interconnect_enter_coherency(void)
40{
41 cci_enable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr_el1()));
42}
43
44/******************************************************************************
45 * Helper function to remove current master from coherency
46 *****************************************************************************/
47void plat_arm_interconnect_exit_coherency(void)
48{
49 cci_disable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr_el1()));
50}