1*91f16700Schasinglulu /* 2*91f16700Schasinglulu * Copyright 2020 NXP 3*91f16700Schasinglulu * 4*91f16700Schasinglulu * SPDX-License-Identifier: BSD-3-Clause 5*91f16700Schasinglulu * 6*91f16700Schasinglulu */ 7*91f16700Schasinglulu 8*91f16700Schasinglulu #include <arch.h> 9*91f16700Schasinglulu #include <cci.h> 10*91f16700Schasinglulu 11*91f16700Schasinglulu #include <plat_arm.h> 12*91f16700Schasinglulu 13*91f16700Schasinglulu /****************************************************************************** 14*91f16700Schasinglulu * The following functions are defined as weak to allow a platform to override 15*91f16700Schasinglulu * the way ARM CCI driver is initialised and used. 16*91f16700Schasinglulu *****************************************************************************/ 17*91f16700Schasinglulu #pragma weak plat_arm_interconnect_enter_coherency 18*91f16700Schasinglulu #pragma weak plat_arm_interconnect_exit_coherency 19*91f16700Schasinglulu 20*91f16700Schasinglulu /****************************************************************************** 21*91f16700Schasinglulu * Helper function to place current master into coherency 22*91f16700Schasinglulu *****************************************************************************/ 23*91f16700Schasinglulu void plat_ls_interconnect_enter_coherency(unsigned int num_clusters) 24*91f16700Schasinglulu { 25*91f16700Schasinglulu cci_enable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr_el1())); 26*91f16700Schasinglulu 27*91f16700Schasinglulu for (uint32_t index = 1U; index < num_clusters; index++) { 28*91f16700Schasinglulu cci_enable_snoop_dvm_reqs(index); 29*91f16700Schasinglulu } 30*91f16700Schasinglulu } 31*91f16700Schasinglulu 32*91f16700Schasinglulu /****************************************************************************** 33*91f16700Schasinglulu * Helper function to remove current master from coherency 34*91f16700Schasinglulu *****************************************************************************/ 35*91f16700Schasinglulu void plat_ls_interconnect_exit_coherency(void) 36*91f16700Schasinglulu { 37*91f16700Schasinglulu cci_disable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr_el1())); 38*91f16700Schasinglulu } 39