blob: 12df6da4b2c53403c2075494c8d16f5b0d0d86d7 [file] [log] [blame]
/*
* Copyright (c) 2019-2023, 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>
#include <common/feat_detect.h>
#define ISOLATE_FIELD(reg, feat) \
((unsigned int)(((reg) >> (feat ## _SHIFT)) & (feat ## _MASK)))
static inline bool is_armv7_gentimer_present(void)
{
return ISOLATE_FIELD(read_id_pfr1(), ID_PFR1_GENTIMER) != 0U;
}
static inline bool is_armv8_2_ttcnp_present(void)
{
return ISOLATE_FIELD(read_id_mmfr4(), ID_MMFR4_CNP) != 0U;
}
static inline unsigned int read_feat_trf_id_field(void)
{
return ISOLATE_FIELD(read_id_dfr0(), ID_DFR0_TRACEFILT);
}
static inline bool is_feat_trf_supported(void)
{
if (ENABLE_TRF_FOR_NS == FEAT_STATE_DISABLED) {
return false;
}
if (ENABLE_TRF_FOR_NS == FEAT_STATE_ALWAYS) {
return true;
}
return read_feat_trf_id_field() != 0U;
}
static inline bool is_feat_spe_supported(void)
{
/* FEAT_SPE is AArch64 only */
return false;
}
#endif /* ARCH_FEATURES_H */