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/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2019 Western Digital Corporation or its affiliates.
*
* Authors:
* Anup Patel <[email protected]>
*/
#ifndef __SBI_HART_H__
#define __SBI_HART_H__
#include <sbi/sbi_types.h>
#include <sbi/sbi_bitops.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 AIA M-mode CSRs */
SBI_HART_EXT_SMAIA = 0,
/** HART has Smepmp */
SBI_HART_EXT_SMEPMP,
/** HART has Smstateen extension **/
SBI_HART_EXT_SMSTATEEN,
/** Hart has Sscofpmt extension */
SBI_HART_EXT_SSCOFPMF,
/** HART has Sstc extension */
SBI_HART_EXT_SSTC,
/** HART has Zicntr extension (i.e. HW cycle, time & instret CSRs) */
SBI_HART_EXT_ZICNTR,
/** HART has Zihpm extension */
SBI_HART_EXT_ZIHPM,
/** HART has Zkr extension */
SBI_HART_EXT_ZKR,
/** Hart has Smcntrpmf extension */
SBI_HART_EXT_SMCNTRPMF,
/** Hart has Xandespmu extension */
SBI_HART_EXT_XANDESPMU,
/** Hart has Zicboz extension */
SBI_HART_EXT_ZICBOZ,
/** Hart has Zicbom extension */
SBI_HART_EXT_ZICBOM,
/** Hart has Svpbmt extension */
SBI_HART_EXT_SVPBMT,
/** Hart has debug trigger extension */
SBI_HART_EXT_SDTRIG,
/** Hart has Smcsrind extension */
SBI_HART_EXT_SMCSRIND,
/** Hart has Smcdeleg extension */
SBI_HART_EXT_SMCDELEG,
/** Hart has Sscsrind extension */
SBI_HART_EXT_SSCSRIND,
/** Hart has Ssccfg extension */
SBI_HART_EXT_SSCCFG,
/** Hart has Svade extension */
SBI_HART_EXT_SVADE,
/** Hart has Svadu extension */
SBI_HART_EXT_SVADU,
/** Hart has Smnpm extension */
SBI_HART_EXT_SMNPM,
/** HART has zicfilp extension */
SBI_HART_EXT_ZICFILP,
/** HART has zicfiss extension */
SBI_HART_EXT_ZICFISS,
/** Hart has Ssdbltrp extension */
SBI_HART_EXT_SSDBLTRP,
/** HART has CTR M-mode CSRs */
SBI_HART_EXT_SMCTR,
/** HART has CTR S-mode CSRs */
SBI_HART_EXT_SSCTR,
/** Hart has Ssqosid extension */
SBI_HART_EXT_SSQOSID,
/** HART has Ssstateen extension **/
SBI_HART_EXT_SSSTATEEN,
/** Hart has Xsfcflushdlone extension */
SBI_HART_EXT_XSIFIVE_CFLUSH_D_L1,
/** Hart has Xsfcease extension */
SBI_HART_EXT_XSIFIVE_CEASE,
/** Hart has Smrnmi extension */
SBI_HART_EXT_SMRNMI,
/** Hart has V extension */
SBI_HART_EXT_V,
/** Hart has F extension */
SBI_HART_EXT_F,
/** Hart has D extension */
SBI_HART_EXT_D,
/** Maximum index of Hart extension */
SBI_HART_EXT_MAX,
};
struct sbi_hart_ext_data {
const unsigned int id;
const char *name;
};
extern const struct sbi_hart_ext_data sbi_hart_ext[];
/** CSRs should be detected by access and trapping */
enum sbi_hart_csrs {
SBI_HART_CSR_CYCLE = 0,
SBI_HART_CSR_TIME,
SBI_HART_CSR_INSTRET,
SBI_HART_CSR_MAX,
};
struct sbi_hart_features {
bool detected;
int priv_version;
unsigned long extensions[BITS_TO_LONGS(SBI_HART_EXT_MAX)];
unsigned long csrs[BITS_TO_LONGS(SBI_HART_CSR_MAX)];
unsigned int pmp_count;
unsigned int pmp_addr_bits;
unsigned int pmp_log2gran;
unsigned int mhpm_mask;
unsigned int mhpm_bits;
};
extern unsigned long hart_features_offset;
#define sbi_hart_features_ptr(__s) sbi_scratch_offset_ptr(__s, hart_features_offset)
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);
unsigned int sbi_hart_mhpm_mask(struct sbi_scratch *scratch);
void sbi_hart_delegation_dump(struct sbi_scratch *scratch,
const char *prefix, const char *suffix);
unsigned int sbi_hart_mhpm_bits(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);
bool sbi_hart_has_csr(struct sbi_scratch *scratch, enum sbi_hart_csrs csr);
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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