1 /* $NetBSD: aarch64_reboot.c,v 1.5 2024/03/05 14:15:28 thorpej Exp $ */
2
3 /*
4 * Copyright (c) 2002, 2003, 2005 Genetec Corporation. All rights reserved.
5 * Written by Hiroyuki Bessho for Genetec Corporation.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of Genetec Corporation may not be used to endorse or
16 * promote products derived from this software without specific prior
17 * written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORPORATION
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 *
31 * Copyright (c) 2001 Wasabi Systems, Inc.
32 * All rights reserved.
33 *
34 * Written by Jason R. Thorpe for Wasabi Systems, Inc.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 * 3. All advertising materials mentioning features or use of this software
45 * must display the following acknowledgement:
46 * This product includes software developed for the NetBSD Project by
47 * Wasabi Systems, Inc.
48 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
49 * or promote products derived from this software without specific prior
50 * written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
54 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
55 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
56 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
57 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
58 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
59 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
60 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
61 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
62 * POSSIBILITY OF SUCH DAMAGE.
63 *
64 * Copyright (c) 1997,1998 Mark Brinicombe.
65 * Copyright (c) 1997,1998 Causality Limited.
66 * All rights reserved.
67 *
68 * Redistribution and use in source and binary forms, with or without
69 * modification, are permitted provided that the following conditions
70 * are met:
71 * 1. Redistributions of source code must retain the above copyright
72 * notice, this list of conditions and the following disclaimer.
73 * 2. Redistributions in binary form must reproduce the above copyright
74 * notice, this list of conditions and the following disclaimer in the
75 * documentation and/or other materials provided with the distribution.
76 * 3. All advertising materials mentioning features or use of this software
77 * must display the following acknowledgement:
78 * This product includes software developed by Mark Brinicombe
79 * for the NetBSD Project.
80 * 4. The name of the company nor the name of the author may be used to
81 * endorse or promote products derived from this software without specific
82 * prior written permission.
83 *
84 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
85 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
86 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
87 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
88 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
89 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
90 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
91 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
92 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
93 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
94 * SUCH DAMAGE.
95 *
96 * Copyright (c) 2007 Microsoft
97 * All rights reserved.
98 *
99 * Redistribution and use in source and binary forms, with or without
100 * modification, are permitted provided that the following conditions
101 * are met:
102 * 1. Redistributions of source code must retain the above copyright
103 * notice, this list of conditions and the following disclaimer.
104 * 2. Redistributions in binary form must reproduce the above copyright
105 * notice, this list of conditions and the following disclaimer in the
106 * documentation and/or other materials provided with the distribution.
107 * 3. All advertising materials mentioning features or use of this software
108 * must display the following acknowledgement:
109 * This product includes software developed by Microsoft
110 *
111 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
112 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
113 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
114 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTERS BE LIABLE FOR ANY DIRECT,
115 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
116 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
117 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
118 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
119 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
120 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
121 * SUCH DAMAGE.
122 */
123
124 #include <sys/cdefs.h>
125 __KERNEL_RCSID(0, "$NetBSD: aarch64_reboot.c,v 1.5 2024/03/05 14:15:28 thorpej Exp $");
126
127 #include <sys/param.h>
128 #include <sys/device.h>
129 #include <sys/kernel.h>
130 #include <sys/reboot.h>
131 #include <sys/mount.h>
132
133 #include <dev/cons.h>
134 #include <uvm/uvm_extern.h>
135
136 #include <aarch64/machdep.h>
137 #include <aarch64/armreg.h>
138 #include <aarch64/locore.h>
139
140 #include <arm/cpufunc.h>
141
142 void (*cpu_reset_address0)(void);
143 void (*cpu_reset_address)(void);
144 void (*cpu_powerdown_address)(void);
145
146 static void
docpureset(int howto)147 docpureset(int howto)
148 {
149 if ((howto & RB_POWERDOWN) == RB_POWERDOWN) {
150 if (cpu_powerdown_address) {
151 (*cpu_powerdown_address)();
152 printf("WARNING: powerdown failed\r\n");
153 } else {
154 printf("WARNING: powerdown not supported\r\n");
155 }
156 }
157
158 if (howto & RB_HALT) {
159 printf("The operating system has halted.\r\n");
160 printf("Please press any key to reboot.\r\n");
161 cnpollc(true); /* for proper keyboard command handling */
162 /* If there is no keyboard, cngetc() returns 0, so loop */
163 while (cngetc() == 0)
164 delay(100000);
165 cnpollc(false);
166 }
167
168 printf("rebooting...\r\n");
169
170 /* make sure to write to memory (msgbuf) */
171 aarch64_dcache_wb_all();
172
173 /* console output delay */
174 delay(1000);
175
176 if (cpu_reset_address != NULL)
177 (*cpu_reset_address)();
178 if (cpu_reset_address0 != NULL)
179 (*cpu_reset_address0)();
180
181 for (;;)
182 asm("wfi");
183
184 /*NOTREACHED*/
185 }
186
187 /* Sync the discs, unmount the filesystems, and adjust the todr */
188 static void
bootsync(void)189 bootsync(void)
190 {
191 static bool bootsyncdone = false;
192
193 if (bootsyncdone)
194 return;
195 bootsyncdone = true;
196
197 /* Make sure we can still manage to do things */
198 if ((reg_daif_read() & DAIF_I) != 0) {
199 /*
200 * If we get here then boot has been called without RB_NOSYNC
201 * and interrupts were disabled. This means the boot() call
202 * did not come from a user process e.g. shutdown, but must
203 * have come from somewhere in the kernel.
204 */
205 ENABLE_INTERRUPT();
206 printf("Warning IRQ's disabled during boot()\n");
207 }
208
209 vfs_shutdown();
210 }
211
212 void
cpu_reboot(int howto,char * bootstr)213 cpu_reboot(int howto, char *bootstr)
214 {
215
216 /*
217 * If we are still cold then hit the air brakes
218 * and crash to earth fast
219 */
220 if (cold) {
221 doshutdownhooks();
222 docpureset(RB_HALT | howto);
223 }
224
225 /*
226 * If RB_NOSYNC was not specified sync the discs.
227 * Note: Unless cold is set to 1 here, syslogd will die during the
228 * unmount. It looks like syslogd is getting woken up only to find
229 * that it cannot page part of the binary in as the filesystem has
230 * been unmounted.
231 */
232 if ((howto & RB_NOSYNC) == 0)
233 bootsync();
234
235 /* Say NO to interrupts for the duration of the dump */
236 int s = splhigh();
237
238 /* Do a dump if requested. */
239 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP)
240 dumpsys();
241
242 splx(s);
243
244 pmf_system_shutdown(boothowto);
245
246 /* Say NO to interrupts for good */
247 splhigh();
248
249 /* Run any shutdown hooks */
250 doshutdownhooks();
251
252 /* Make sure IRQ's are disabled */
253 DISABLE_INTERRUPT();
254
255 docpureset(howto);
256 __unreachable();
257 }
258