1 /*        $NetBSD: arm32_reboot.c,v 1.13 2020/06/20 07:10:36 skrll 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: arm32_reboot.c,v 1.13 2020/06/20 07:10:36 skrll Exp $");
126 
127 #include <sys/param.h>
128 
129 #include <dev/cons.h>
130 #include <sys/device.h>
131 #include <sys/kernel.h>
132 #include <sys/reboot.h>
133 
134 #include <uvm/uvm_extern.h>
135 
136 #include <arm/locore.h>
137 #include <arm/arm32/machdep.h>
138 
139 void (*cpu_powerdown_address)(void);
140 
141 static void
docpureset(int howto)142 docpureset(int howto)
143 {
144           if ((howto & RB_POWERDOWN) == RB_POWERDOWN) {
145                     if (cpu_powerdown_address) {
146                               cpu_powerdown_address();
147                               printf("WARNING: powerdown failed\r\n");
148                     } else {
149                               printf("WARNING: powerdown not supported\r\n");
150                     }
151           }
152 
153           if (howto & RB_HALT) {
154                     printf("The operating system has halted.\r\n");
155                     printf("Please press any key to reboot.\r\n");
156                     cnpollc(true);      /* for proper keyboard command handling */
157                     /* If there is no keyboard, cngetc() returns 0, so loop */
158                     while (cngetc() == 0)
159                               delay(100000);
160                     cnpollc(false);
161           }
162 
163           printf("rebooting...\r\n");
164           if (cpu_reset_address)
165                     (*cpu_reset_address)();
166           cpu_reset();
167           /*NOTREACHED*/
168 }
169 
170 void
cpu_reboot(int howto,char * bootstr)171 cpu_reboot(int howto, char *bootstr)
172 {
173 
174           /*
175            * If we are still cold then hit the air brakes
176            * and crash to earth fast
177            */
178           if (cold) {
179                     doshutdownhooks();
180                     docpureset(RB_HALT | howto);
181           }
182 
183           /*
184            * If RB_NOSYNC was not specified sync the discs.
185            * Note: Unless cold is set to 1 here, syslogd will die during the
186            * unmount.  It looks like syslogd is getting woken up only to find
187            * that it cannot page part of the binary in as the filesystem has
188            * been unmounted.
189            */
190           if (!(howto & RB_NOSYNC))
191                     bootsync();
192 
193           /* Say NO to interrupts for the duration of the dump */
194           int s = splhigh();
195 
196           /* Do a dump if requested. */
197           if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP)
198                     dumpsys();
199 
200           splx(s);
201 
202           pmf_system_shutdown(boothowto);
203 
204           /* Say NO to interrupts for good */
205           splhigh();
206 
207           /* Run any shutdown hooks */
208           doshutdownhooks();
209 
210           /* Make sure IRQ's are disabled */
211           IRQdisable;
212 
213           docpureset(howto);
214           __unreachable();
215 }
216