lib/riscv/asm/sbi.h

/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef _ASMRISCV_SBI_H_
#define _ASMRISCV_SBI_H_

#define SBI_SUCCESS			0
#define SBI_ERR_FAILURE			-1
#define SBI_ERR_NOT_SUPPORTED		-2
#define SBI_ERR_INVALID_PARAM		-3
#define SBI_ERR_DENIED			-4
#define SBI_ERR_INVALID_ADDRESS		-5
#define SBI_ERR_ALREADY_AVAILABLE	-6
#define SBI_ERR_ALREADY_STARTED		-7
#define SBI_ERR_ALREADY_STOPPED		-8

#ifndef __ASSEMBLY__

enum sbi_ext_id {
	SBI_EXT_BASE = 0x10,
	SBI_EXT_TIME = 0x54494d45,
	SBI_EXT_HSM = 0x48534d,
	SBI_EXT_SRST = 0x53525354,
};

enum sbi_ext_base_fid {
	SBI_EXT_BASE_GET_SPEC_VERSION = 0,
	SBI_EXT_BASE_GET_IMP_ID,
	SBI_EXT_BASE_GET_IMP_VERSION,
	SBI_EXT_BASE_PROBE_EXT,
	SBI_EXT_BASE_GET_MVENDORID,
	SBI_EXT_BASE_GET_MARCHID,
	SBI_EXT_BASE_GET_MIMPID,
};

enum sbi_ext_hsm_fid {
	SBI_EXT_HSM_HART_START = 0,
	SBI_EXT_HSM_HART_STOP,
	SBI_EXT_HSM_HART_STATUS,
	SBI_EXT_HSM_HART_SUSPEND,
};

enum sbi_ext_time_fid {
	SBI_EXT_TIME_SET_TIMER = 0,
};

struct sbiret {
	long error;
	long value;
};

struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0,
			unsigned long arg1, unsigned long arg2,
			unsigned long arg3, unsigned long arg4,
			unsigned long arg5);

void sbi_shutdown(void);
struct sbiret sbi_hart_start(unsigned long hartid, unsigned long entry, unsigned long sp);
long sbi_probe(int ext);

#endif /* !__ASSEMBLY__ */
#endif /* _ASMRISCV_SBI_H_ */