/* * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2019 Western Digital Corporation or its affiliates. * * Authors: * Anup Patel */ #ifndef __SBI_HART_H__ #define __SBI_HART_H__ #include /** Possible feature flags of a hart */ enum sbi_hart_features { /** Hart has S-mode counter enable */ SBI_HART_HAS_SCOUNTEREN = (1 << 0), /** Hart has M-mode counter enable */ SBI_HART_HAS_MCOUNTEREN = (1 << 1), /** HART has timer csr implementation in hardware */ SBI_HART_HAS_TIME = (1 << 2), /** Last index of Hart features*/ SBI_HART_HAS_LAST_FEATURE = SBI_HART_HAS_TIME, }; struct sbi_scratch; int sbi_hart_reinit(struct sbi_scratch *scratch); int sbi_hart_init(struct sbi_scratch *scratch, bool cold_boot); extern void (*sbi_hart_expected_trap)(void); static inline ulong sbi_hart_expected_trap_addr(void) { return (ulong)sbi_hart_expected_trap; } unsigned int sbi_hart_mhpm_count(struct sbi_scratch *scratch); void sbi_hart_delegation_dump(struct sbi_scratch *scratch, const char *prefix, const char *suffix); unsigned int sbi_hart_pmp_count(struct sbi_scratch *scratch); unsigned long sbi_hart_pmp_granularity(struct sbi_scratch *scratch); unsigned int sbi_hart_pmp_addrbits(struct sbi_scratch *scratch); int sbi_hart_pmp_configure(struct sbi_scratch *scratch); bool sbi_hart_has_feature(struct sbi_scratch *scratch, unsigned long feature); void sbi_hart_get_features_str(struct sbi_scratch *scratch, char *features_str, int nfstr); void __attribute__((noreturn)) sbi_hart_hang(void); void __attribute__((noreturn)) sbi_hart_switch_mode(unsigned long arg0, unsigned long arg1, unsigned long next_addr, unsigned long next_mode, bool next_virt); #endif