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#ifndef _SBI_H
#define _SBI_H
#include <stdint.h>
struct sbiret {
long err;
long val;
};
#define SBI_SUCCESS 0
#define SBI_ERR_FAILED -1
#define SBI_ERR_NOT_SUPPORTED -2
#define SBI_ERR_INVALD_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
enum HART_STATUS {
STARTED,
STOPPED,
START_PENDING,
STOP_PENDING,
SUSPENDED,
SUSPEND_PENDING,
RESUME_PENDING
};
static inline 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)
{
struct sbiret ret;
register unsigned long a0 asm ("a0") = (unsigned long)(arg0);
register unsigned long a1 asm ("a1") = (unsigned long)(arg1);
register unsigned long a2 asm ("a2") = (unsigned long)(arg2);
register unsigned long a3 asm ("a3") = (unsigned long)(arg3);
register unsigned long a4 asm ("a4") = (unsigned long)(arg4);
register unsigned long a5 asm ("a5") = (unsigned long)(arg5);
register unsigned long a6 asm ("a6") = (unsigned long)(fid);
register unsigned long a7 asm ("a7") = (unsigned long)(ext);
asm volatile ("ecall"
: "+r" (a0), "+r" (a1)
: "r" (a2), "r" (a3), "r" (a4), "r" (a5), "r" (a6), "r" (a7)
: "memory");
ret.err = a0;
ret.val = a1;
return ret;
}
static inline void
sbi_console_putchar(int c)
{
sbi_ecall(1, 0, c, 0, 0, 0, 0, 0);
}
static inline void
sbi_debug_console_write_byte(uint8_t byte)
{
sbi_ecall(0x4442434E, 0x2, 'c', 0, 0, 0, 0, 0);
}
static inline void
sbi_shutdown(void)
{
sbi_ecall(8, 0, 0, 0, 0, 0, 0, 0);
}
static inline struct sbiret
sbi_hart_start(unsigned long hartid, unsigned long start_addr, unsigned long opaque)
{
struct sbiret r = sbi_ecall(0x48534D, 0, hartid, start_addr, opaque, 0, 0, 0);
return r;
}
#define _start_hart(tp, a) sbi_hart_start(tp, a, 0);
#endif /* _SBI_H */
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