| // SPDX-License-Identifier: GPL-2.0-only |
| #include <libcflat.h> |
| #include <asm/sbi.h> |
| |
| 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) |
| { |
| register uintptr_t a0 asm ("a0") = (uintptr_t)(arg0); |
| register uintptr_t a1 asm ("a1") = (uintptr_t)(arg1); |
| register uintptr_t a2 asm ("a2") = (uintptr_t)(arg2); |
| register uintptr_t a3 asm ("a3") = (uintptr_t)(arg3); |
| register uintptr_t a4 asm ("a4") = (uintptr_t)(arg4); |
| register uintptr_t a5 asm ("a5") = (uintptr_t)(arg5); |
| register uintptr_t a6 asm ("a6") = (uintptr_t)(fid); |
| register uintptr_t a7 asm ("a7") = (uintptr_t)(ext); |
| struct sbiret ret; |
| |
| asm volatile ( |
| "ecall" |
| : "+r" (a0), "+r" (a1) |
| : "r" (a2), "r" (a3), "r" (a4), "r" (a5), "r" (a6), "r" (a7) |
| : "memory"); |
| ret.error = a0; |
| ret.value = a1; |
| |
| return ret; |
| } |
| |
| void sbi_shutdown(void) |
| { |
| sbi_ecall(SBI_EXT_SRST, 0, 0, 0, 0, 0, 0, 0); |
| puts("SBI shutdown failed!\n"); |
| } |
| |
| struct sbiret sbi_hart_start(unsigned long hartid, unsigned long entry, unsigned long sp) |
| { |
| return sbi_ecall(SBI_EXT_HSM, SBI_EXT_HSM_HART_START, hartid, entry, sp, 0, 0, 0); |
| } |