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Diffstat (limited to '')
-rw-r--r-- | drivers/nxp/interconnect/ls_cci.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/nxp/interconnect/ls_cci.c b/drivers/nxp/interconnect/ls_cci.c new file mode 100644 index 0000000..72a898a --- /dev/null +++ b/drivers/nxp/interconnect/ls_cci.c @@ -0,0 +1,38 @@ +/* + * Copyright 2020 NXP + * + * SPDX-License-Identifier: BSD-3-Clause + * + */ + +#include <arch.h> +#include <cci.h> + +#include <plat_arm.h> + +/****************************************************************************** + * The following functions are defined as weak to allow a platform to override + * the way ARM CCI driver is initialised and used. + *****************************************************************************/ +#pragma weak plat_arm_interconnect_enter_coherency +#pragma weak plat_arm_interconnect_exit_coherency + +/****************************************************************************** + * Helper function to place current master into coherency + *****************************************************************************/ +void plat_ls_interconnect_enter_coherency(unsigned int num_clusters) +{ + cci_enable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr_el1())); + + for (uint32_t index = 1U; index < num_clusters; index++) { + cci_enable_snoop_dvm_reqs(index); + } +} + +/****************************************************************************** + * Helper function to remove current master from coherency + *****************************************************************************/ +void plat_ls_interconnect_exit_coherency(void) +{ + cci_disable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr_el1())); +} |