| /* |
| * Copyright (c) 2019, Arm Limited. All rights reserved. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #ifndef ARCH_FEATURES_H |
| #define ARCH_FEATURES_H |
| |
| #include <stdbool.h> |
| |
| #include <arch_helpers.h> |
| |
| static inline bool is_armv8_2_ttcnp_present(void) |
| { |
| return ((read_id_aa64mmfr2_el1() >> ID_AA64MMFR2_EL1_CNP_SHIFT) & |
| ID_AA64MMFR2_EL1_CNP_MASK) != 0U; |
| } |
| |
| static inline bool is_armv8_4_ttst_present(void) |
| { |
| return ((read_id_aa64mmfr2_el1() >> ID_AA64MMFR2_EL1_ST_SHIFT) & |
| ID_AA64MMFR2_EL1_ST_MASK) == 1U; |
| } |
| |
| #endif /* ARCH_FEATURES_H */ |