2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2011 Nathan Whitehorn
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/module.h>
37 #include <sys/clock.h>
39 #include <sys/eventhandler.h>
40 #include <sys/kernel.h>
41 #include <sys/reboot.h>
42 #include <sys/sysctl.h>
44 #include <dev/ofw/ofw_bus.h>
45 #include <dev/ofw/openfirm.h>
47 #include <machine/rtas.h>
51 static int rtasdev_probe(device_t);
52 static int rtasdev_attach(device_t);
54 static int rtas_gettime(device_t dev, struct timespec *ts);
55 static int rtas_settime(device_t dev, struct timespec *ts);
57 static void rtas_shutdown(void *arg, int howto);
59 static device_method_t rtasdev_methods[] = {
60 /* Device interface */
61 DEVMETHOD(device_probe, rtasdev_probe),
62 DEVMETHOD(device_attach, rtasdev_attach),
65 DEVMETHOD(clock_gettime, rtas_gettime),
66 DEVMETHOD(clock_settime, rtas_settime),
71 static driver_t rtasdev_driver = {
77 DRIVER_MODULE(rtasdev, ofwbus, rtasdev_driver, 0, 0);
80 rtasdev_probe(device_t dev)
82 const char *name = ofw_bus_get_name(dev);
84 if (strcmp(name, "rtas") != 0)
89 device_set_desc(dev, "Run-Time Abstraction Services");
94 rtasdev_attach(device_t dev)
96 if (rtas_token_lookup("get-time-of-day") != -1)
97 clock_register(dev, 2000);
99 EVENTHANDLER_REGISTER(shutdown_final, rtas_shutdown, NULL,
106 rtas_gettime(device_t dev, struct timespec *ts) {
112 token = rtas_token_lookup("get-time-of-day");
115 error = rtas_call_method(token, 0, 8, &tod[0], &tod[1], &tod[2],
116 &tod[3], &tod[4], &tod[5], &tod[6], &tod[7]);
120 return ((tod[0] == -1) ? ENXIO : EAGAIN);
130 return (clock_ct_to_ts(&ct, ts));
134 rtas_settime(device_t dev, struct timespec *ts)
137 cell_t token, status;
140 token = rtas_token_lookup("set-time-of-day");
144 clock_ts_to_ct(ts, &ct);
145 error = rtas_call_method(token, 7, 1, ct.year, ct.mon, ct.day, ct.hour,
146 ct.min, ct.sec, ct.nsec, &status);
150 return (((int)status < 0) ? ENXIO : EAGAIN);
156 rtas_shutdown(void *arg, int howto)
158 cell_t token, status;
160 if (howto & RB_HALT) {
161 token = rtas_token_lookup("power-off");
165 rtas_call_method(token, 2, 1, 0, 0, &status);
167 token = rtas_token_lookup("system-reboot");
171 rtas_call_method(token, 0, 1, &status);