1*2559b2c8SAntonio Nino Diaz /* 2*2559b2c8SAntonio Nino Diaz * Copyright (c) 2019, Arm Limited. All rights reserved. 3*2559b2c8SAntonio Nino Diaz * 4*2559b2c8SAntonio Nino Diaz * SPDX-License-Identifier: BSD-3-Clause 5*2559b2c8SAntonio Nino Diaz */ 6*2559b2c8SAntonio Nino Diaz 7*2559b2c8SAntonio Nino Diaz #ifndef ARCH_FEATURES_H 8*2559b2c8SAntonio Nino Diaz #define ARCH_FEATURES_H 9*2559b2c8SAntonio Nino Diaz 10*2559b2c8SAntonio Nino Diaz #include <stdbool.h> 11*2559b2c8SAntonio Nino Diaz 12*2559b2c8SAntonio Nino Diaz #include <arch_helpers.h> 13*2559b2c8SAntonio Nino Diaz 14*2559b2c8SAntonio Nino Diaz static inline bool is_armv8_2_ttcnp_present(void) 15*2559b2c8SAntonio Nino Diaz { 16*2559b2c8SAntonio Nino Diaz return ((read_id_aa64mmfr2_el1() >> ID_AA64MMFR2_EL1_CNP_SHIFT) & 17*2559b2c8SAntonio Nino Diaz ID_AA64MMFR2_EL1_CNP_MASK) != 0U; 18*2559b2c8SAntonio Nino Diaz } 19*2559b2c8SAntonio Nino Diaz 20*2559b2c8SAntonio Nino Diaz #endif /* ARCH_FEATURES_H */ 21