1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
|
/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-05-18 Bernard port from FreeBSD
*/
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2019 Mitchell Horne <[email protected]>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "sbi.h"
#include <rtthread.h>
#include <stdbool.h>
/* SBI Implementation-Specific Definitions */
#define OPENSBI_VERSION_MAJOR_OFFSET 16
#define OPENSBI_VERSION_MINOR_MASK 0xFFFF
unsigned long sbi_spec_version;
unsigned long sbi_impl_id;
unsigned long sbi_impl_version;
static bool has_time_extension = false;
static bool has_ipi_extension = false;
static bool has_rfnc_extension = false;
static struct sbi_ret sbi_get_spec_version(void)
{
return (SBI_CALL0(SBI_EXT_ID_BASE, SBI_BASE_GET_SPEC_VERSION));
}
static struct sbi_ret sbi_get_impl_id(void)
{
return (SBI_CALL0(SBI_EXT_ID_BASE, SBI_BASE_GET_IMPL_ID));
}
static struct sbi_ret sbi_get_impl_version(void)
{
return (SBI_CALL0(SBI_EXT_ID_BASE, SBI_BASE_GET_IMPL_VERSION));
}
void sbi_print_version(void)
{
uint32_t major;
uint32_t minor;
/* For legacy SBI implementations. */
if (sbi_spec_version == 0)
{
rt_kprintf("SBI: Unknown (Legacy) Implementation\n");
rt_kprintf("SBI Specification Version: 0.1\n");
return;
}
switch (sbi_impl_id)
{
case (SBI_IMPL_ID_BBL):
rt_kprintf("SBI: Berkely Boot Loader %lu\n", sbi_impl_version);
break;
case (SBI_IMPL_ID_XVISOR):
rt_kprintf("SBI: eXtensible Versatile hypervISOR %lu\n",
sbi_impl_version);
break;
case (SBI_IMPL_ID_KVM):
rt_kprintf("SBI: Kernel-based Virtual Machine %lu\n", sbi_impl_version);
break;
case (SBI_IMPL_ID_RUSTSBI):
rt_kprintf("SBI: RustSBI %lu\n", sbi_impl_version);
break;
case (SBI_IMPL_ID_DIOSIX):
rt_kprintf("SBI: Diosix %lu\n", sbi_impl_version);
break;
case (SBI_IMPL_ID_OPENSBI):
major = sbi_impl_version >> OPENSBI_VERSION_MAJOR_OFFSET;
minor = sbi_impl_version & OPENSBI_VERSION_MINOR_MASK;
rt_kprintf("SBI: OpenSBI v%u.%u\n", major, minor);
break;
default:
rt_kprintf("SBI: Unrecognized Implementation: %lu\n", sbi_impl_id);
break;
}
major = (sbi_spec_version & SBI_SPEC_VERS_MAJOR_MASK) >>
SBI_SPEC_VERS_MAJOR_OFFSET;
minor = (sbi_spec_version & SBI_SPEC_VERS_MINOR_MASK);
rt_kprintf("SBI Specification Version: %u.%u\n", major, minor);
}
void sbi_set_timer(uint64_t val)
{
struct sbi_ret ret;
/* Use the TIME legacy replacement extension, if available. */
if (has_time_extension)
{
ret = SBI_CALL1(SBI_EXT_ID_TIME, SBI_TIME_SET_TIMER, val);
RT_ASSERT(ret.error == SBI_SUCCESS);
}
else
{
(void)SBI_CALL1(SBI_SET_TIMER, 0, val);
}
}
void sbi_send_ipi(const unsigned long *hart_mask)
{
struct sbi_ret ret;
/* Use the IPI legacy replacement extension, if available. */
if (has_ipi_extension)
{
ret = SBI_CALL2(SBI_EXT_ID_IPI, SBI_IPI_SEND_IPI, *hart_mask, 0);
RT_ASSERT(ret.error == SBI_SUCCESS);
}
else
{
(void)SBI_CALL1(SBI_SEND_IPI, 0, (uint64_t)hart_mask);
}
}
void sbi_remote_fence_i(const unsigned long *hart_mask)
{
struct sbi_ret ret;
/* Use the RFENCE legacy replacement extension, if available. */
if (has_rfnc_extension)
{
ret =
SBI_CALL2(SBI_EXT_ID_RFNC, SBI_RFNC_REMOTE_FENCE_I, *hart_mask, 0);
RT_ASSERT(ret.error == SBI_SUCCESS);
}
else
{
(void)SBI_CALL1(SBI_REMOTE_FENCE_I, 0, (uint64_t)hart_mask);
}
}
int sbi_remote_sfence_vma(const unsigned long *hart_mask,
const unsigned long hart_mask_base,
unsigned long start, unsigned long size)
{
struct sbi_ret ret = {.error = SBI_SUCCESS};
/* Use the RFENCE legacy replacement extension, if available. */
if (has_rfnc_extension)
{
ret = SBI_CALL4(SBI_EXT_ID_RFNC, SBI_RFNC_REMOTE_SFENCE_VMA, *hart_mask,
hart_mask_base, start, size);
}
else
{
(void)SBI_CALL3(SBI_REMOTE_SFENCE_VMA, 0, (uint64_t)hart_mask, start,
size);
}
return ret.error;
}
void sbi_remote_sfence_vma_asid(const unsigned long *hart_mask,
unsigned long start, unsigned long size,
unsigned long asid)
{
struct sbi_ret ret;
/* Use the RFENCE legacy replacement extension, if available. */
if (has_rfnc_extension)
{
ret = SBI_CALL5(SBI_EXT_ID_RFNC, SBI_RFNC_REMOTE_SFENCE_VMA_ASID,
*hart_mask, 0, start, size, asid);
RT_ASSERT(ret.error == SBI_SUCCESS);
}
else
{
(void)SBI_CALL4(SBI_REMOTE_SFENCE_VMA_ASID, 0, (uint64_t)hart_mask,
start, size, asid);
}
}
int sbi_hsm_hart_start(unsigned long hart, unsigned long start_addr,
unsigned long priv)
{
struct sbi_ret ret;
ret = SBI_CALL3(SBI_EXT_ID_HSM, SBI_HSM_HART_START, hart, start_addr, priv);
return (ret.error != 0 ? (int)ret.error : 0);
}
void sbi_hsm_hart_stop(void)
{
(void)SBI_CALL0(SBI_EXT_ID_HSM, SBI_HSM_HART_STOP);
}
int sbi_hsm_hart_status(unsigned long hart)
{
struct sbi_ret ret;
ret = SBI_CALL1(SBI_EXT_ID_HSM, SBI_HSM_HART_STATUS, hart);
return (ret.error != 0 ? (int)ret.error : (int)ret.value);
}
void sbi_init(void)
{
struct sbi_ret sret;
/*
* Get the spec version. For legacy SBI implementations this will
* return an error, otherwise it is guaranteed to succeed.
*/
sret = sbi_get_spec_version();
if (sret.error != 0)
{
/* We are running a legacy SBI implementation. */
sbi_spec_version = 0;
return;
}
/* Set the SBI implementation info. */
sbi_spec_version = sret.value;
sbi_impl_id = sbi_get_impl_id().value;
sbi_impl_version = sbi_get_impl_version().value;
/* Probe for legacy replacement extensions. */
if (sbi_probe_extension(SBI_EXT_ID_TIME) != 0)
has_time_extension = true;
if (sbi_probe_extension(SBI_EXT_ID_IPI) != 0)
has_ipi_extension = true;
if (sbi_probe_extension(SBI_EXT_ID_RFNC) != 0)
has_rfnc_extension = true;
}
void rt_hw_console_output(const char *str)
{
while (*str)
{
sbi_console_putchar(*str++);
}
}
|
