1 /* $NetBSD: clock.c,v 1.12 2023/11/05 21:54:27 andvar Exp $ */
2
3 /*-
4 * Copyright (c) 2001 The NetBSD Foundation, Inc.
5 * All rights reserved.
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 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 __KERNEL_RCSID(0, "$NetBSD: clock.c,v 1.12 2023/11/05 21:54:27 andvar Exp $");
31
32 #include "debug_playstation2.h"
33
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/kernel.h> /* time */
37 #include <sys/proc.h>
38
39 #include <mips/locore.h>
40 #include <mips/mips3_clock.h>
41
42 #include <dev/clock_subr.h>
43 #include <machine/bootinfo.h>
44
45 #include <playstation2/ee/timervar.h>
46
47 static int get_bootinfo_tod(todr_chip_handle_t, struct clock_ymdhms *);
48
49 void
cpu_initclocks(void)50 cpu_initclocks(void)
51 {
52 struct todr_chip_handle todr = {
53 .todr_gettime_ymdhms = get_bootinfo_tod,
54 };
55
56 /*
57 * PS2 R5900 CPU clock is 294.912 MHz = (1 << 15) * 9 * 1000
58 */
59 curcpu()->ci_cpu_freq = 294912000;
60
61 hz = 100;
62
63 /* Install clock interrupt */
64 timer_clock_init();
65
66 todr_attach(&todr);
67
68 mips3_init_tc();
69 }
70
71 void
setstatclockrate(int arg)72 setstatclockrate(int arg)
73 {
74 /* not yet */
75 }
76
77 static int
get_bootinfo_tod(todr_chip_handle_t tch,struct clock_ymdhms * dt)78 get_bootinfo_tod(todr_chip_handle_t tch, struct clock_ymdhms *dt)
79 {
80 time_t utc;
81 struct bootinfo_rtc *rtc =
82 (void *)MIPS_PHYS_TO_KSEG1(BOOTINFO_BLOCK_BASE + BOOTINFO_RTC);
83
84 /* PS2 RTC is JST */
85 dt->dt_year = bcdtobin(rtc->year) + 2000;
86 dt->dt_mon = bcdtobin(rtc->mon);
87 dt->dt_day = bcdtobin(rtc->day);
88 dt->dt_hour = bcdtobin(rtc->hour);
89 dt->dt_min = bcdtobin(rtc->min);
90 dt->dt_sec = bcdtobin(rtc->sec);
91
92 /* convert to UTC */
93 utc = clock_ymdhms_to_secs(dt) - 9*60*60;
94 clock_secs_to_ymdhms(utc, dt);
95 #ifdef DEBUG
96 printf("bootinfo: %lld/%d/%d/%d/%d/%d rtc_offset %d\n", dt->dt_year,
97 dt->dt_mon, dt->dt_day, dt->dt_hour, dt->dt_min, dt->dt_sec,
98 rtc_offset);
99 #endif
100 return 0;
101 }
102