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/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2019 Western Digital Corporation or its affiliates.
*
* Authors:
* Anup Patel <anup.patel@wdc.com>
*/
#ifndef __SBI_HART_H__
#define __SBI_HART_H__
#include <sbi/sbi_types.h>
/** Possible privileged specification versions of a hart */
enum sbi_hart_priv_versions {
/** Unknown privileged specification */
SBI_HART_PRIV_VER_UNKNOWN = 0,
/** Privileged specification v1.10 */
SBI_HART_PRIV_VER_1_10 = 1,
/** Privileged specification v1.11 */
SBI_HART_PRIV_VER_1_11 = 2,
/** Privileged specification v1.12 */
SBI_HART_PRIV_VER_1_12 = 3,
};
/** Possible ISA extensions of a hart */
enum sbi_hart_extensions {
/** Hart has Sscofpmt extension */
SBI_HART_EXT_SSCOFPMF = 0,
/** HART has HW time CSR (extension name not available) */
SBI_HART_EXT_TIME,
/** HART has AIA CSRs (extension name not available) */
SBI_HART_EXT_AIA,
/** HART has Smstateen CSR **/
SBI_HART_EXT_SMSTATEEN,
/** HART has Sstc extension */
SBI_HART_EXT_SSTC,
/** Maximum index of Hart extension */
SBI_HART_EXT_MAX,
};
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);
unsigned int sbi_hart_mhpm_bits(struct sbi_scratch *scratch);
int sbi_hart_pmp_configure(struct sbi_scratch *scratch);
int sbi_hart_priv_version(struct sbi_scratch *scratch);
void sbi_hart_get_priv_version_str(struct sbi_scratch *scratch,
char *version_str, int nvstr);
void sbi_hart_update_extension(struct sbi_scratch *scratch,
enum sbi_hart_extensions ext,
bool enable);
bool sbi_hart_has_extension(struct sbi_scratch *scratch,
enum sbi_hart_extensions ext);
void sbi_hart_get_extensions_str(struct sbi_scratch *scratch,
char *extension_str, int nestr);
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
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