2 * Copyright (c) 2016-2017 Ruslan Bukin <br@bsdpad.com>
5 * Portions of this software were developed by SRI International and the
6 * University of Cambridge Computer Laboratory under DARPA/AFRL contract
7 * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.
9 * Portions of this software were developed by the University of Cambridge
10 * Computer Laboratory as part of the CTSRD Project, with support from the
11 * UK Higher Education Innovation Fund (HEIF).
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 #ifndef _MACHINE_SBI_H_
38 #define _MACHINE_SBI_H_
40 #define SBI_SET_TIMER 0
41 #define SBI_CONSOLE_PUTCHAR 1
42 #define SBI_CONSOLE_GETCHAR 2
43 #define SBI_CLEAR_IPI 3
44 #define SBI_SEND_IPI 4
45 #define SBI_REMOTE_FENCE_I 5
46 #define SBI_REMOTE_SFENCE_VMA 6
47 #define SBI_REMOTE_SFENCE_VMA_ASID 7
48 #define SBI_SHUTDOWN 8
51 * Documentation available at
52 * https://github.com/riscv/riscv-sbi-doc/blob/master/riscv-sbi.md
55 static __inline uint64_t
56 sbi_call(uint64_t arg7, uint64_t arg0, uint64_t arg1, uint64_t arg2,
59 register uintptr_t a0 __asm ("a0") = (uintptr_t)(arg0);
60 register uintptr_t a1 __asm ("a1") = (uintptr_t)(arg1);
61 register uintptr_t a2 __asm ("a2") = (uintptr_t)(arg2);
62 register uintptr_t a3 __asm ("a3") = (uintptr_t)(arg3);
63 register uintptr_t a7 __asm ("a7") = (uintptr_t)(arg7);
68 :"r"(a1), "r"(a2), "r" (a3), "r"(a7) \
75 sbi_console_putchar(int ch)
78 sbi_call(SBI_CONSOLE_PUTCHAR, ch, 0, 0, 0);
82 sbi_console_getchar(void)
85 return (sbi_call(SBI_CONSOLE_GETCHAR, 0, 0, 0, 0));
89 sbi_set_timer(uint64_t val)
92 sbi_call(SBI_SET_TIMER, val, 0, 0, 0);
99 sbi_call(SBI_SHUTDOWN, 0, 0, 0, 0);
106 sbi_call(SBI_CLEAR_IPI, 0, 0, 0, 0);
110 sbi_send_ipi(const unsigned long *hart_mask)
113 sbi_call(SBI_SEND_IPI, (uint64_t)hart_mask, 0, 0, 0);
117 sbi_remote_fence_i(const unsigned long *hart_mask)
120 sbi_call(SBI_REMOTE_FENCE_I, (uint64_t)hart_mask, 0, 0, 0);
124 sbi_remote_sfence_vma(const unsigned long *hart_mask,
125 unsigned long start, unsigned long size)
128 sbi_call(SBI_REMOTE_SFENCE_VMA, (uint64_t)hart_mask, start, size, 0);
132 sbi_remote_sfence_vma_asid(const unsigned long *hart_mask,
133 unsigned long start, unsigned long size,
137 sbi_call(SBI_REMOTE_SFENCE_VMA_ASID, (uint64_t)hart_mask, start, size,
141 #endif /* !_MACHINE_SBI_H_ */